diff options
| -rw-r--r-- | sound/usb/Makefile | 13 | ||||
| -rw-r--r-- | sound/usb/card.c | 648 | ||||
| -rw-r--r-- | sound/usb/card.h | 105 | ||||
| -rw-r--r-- | sound/usb/debug.h | 15 | ||||
| -rw-r--r-- | sound/usb/endpoint.c | 358 | ||||
| -rw-r--r-- | sound/usb/endpoint.h | 11 | ||||
| -rw-r--r-- | sound/usb/format.c | 445 | ||||
| -rw-r--r-- | sound/usb/format.h | 8 | ||||
| -rw-r--r-- | sound/usb/helper.c | 112 | ||||
| -rw-r--r-- | sound/usb/helper.h | 32 | ||||
| -rw-r--r-- | sound/usb/midi.c (renamed from sound/usb/usbmidi.c) | 4 | ||||
| -rw-r--r-- | sound/usb/midi.h (renamed from sound/usb/usbmidi.h) | 0 | ||||
| -rw-r--r-- | sound/usb/misc/ua101.c | 2 | ||||
| -rw-r--r-- | sound/usb/pcm.c | 845 | ||||
| -rw-r--r-- | sound/usb/pcm.h | 14 | ||||
| -rw-r--r-- | sound/usb/proc.c | 163 | ||||
| -rw-r--r-- | sound/usb/proc.h | 8 | ||||
| -rw-r--r-- | sound/usb/quirks-table.h (renamed from sound/usb/usbquirks.h) | 0 | ||||
| -rw-r--r-- | sound/usb/quirks.c | 592 | ||||
| -rw-r--r-- | sound/usb/quirks.h | 23 | ||||
| -rw-r--r-- | sound/usb/urb.c | 989 | ||||
| -rw-r--r-- | sound/usb/urb.h | 21 | ||||
| -rw-r--r-- | sound/usb/usbaudio.c | 4051 | ||||
| -rw-r--r-- | sound/usb/usbaudio.h | 42 | ||||
| -rw-r--r-- | sound/usb/usbmixer.c | 1 | ||||
| -rw-r--r-- | sound/usb/usx2y/us122l.c | 2 | ||||
| -rw-r--r-- | sound/usb/usx2y/usbusx2y.h | 2 |
27 files changed, 4411 insertions, 4095 deletions
diff --git a/sound/usb/Makefile b/sound/usb/Makefile index 423d829056f..0758d8dc8cd 100644 --- a/sound/usb/Makefile +++ b/sound/usb/Makefile @@ -2,8 +2,17 @@ # Makefile for ALSA # -snd-usb-audio-objs := usbaudio.o usbmixer.o -snd-usbmidi-lib-objs := usbmidi.o +snd-usb-audio-objs := card.o \ + usbmixer.o \ + proc.o \ + quirks.o \ + format.o \ + endpoint.o \ + urb.o \ + pcm.o \ + helper.o + +snd-usbmidi-lib-objs := midi.o # Toplevel Module Dependency obj-$(CONFIG_SND_USB_AUDIO) += snd-usb-audio.o snd-usbmidi-lib.o diff --git a/sound/usb/card.c b/sound/usb/card.c new file mode 100644 index 00000000000..426aabc729d --- /dev/null +++ b/sound/usb/card.c @@ -0,0 +1,648 @@ +/* + * (Tentative) USB Audio Driver for ALSA + * + * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> + * + * Many codes borrowed from audio.c by + * Alan Cox (alan@lxorguk.ukuu.org.uk) + * Thomas Sailer (sailer@ife.ee.ethz.ch) + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * + * NOTES: + * + * - async unlink should be used for avoiding the sleep inside lock. + * 2.4.22 usb-uhci seems buggy for async unlinking and results in + * oops. in such a cse, pass async_unlink=0 option. + * - the linked URBs would be preferred but not used so far because of + * the instability of unlinking. + * - type II is not supported properly. there is no device which supports + * this type *correctly*. SB extigy looks as if it supports, but it's + * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream). + */ + + +#include <linux/bitops.h> +#include <linux/init.h> +#include <linux/list.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/usb.h> +#include <linux/moduleparam.h> +#include <linux/mutex.h> +#include <linux/usb/audio.h> + +#include <sound/core.h> +#include <sound/info.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/initval.h> + +#include "usbaudio.h" +#include "card.h" +#include "midi.h" +#include "usbmixer.h" +#include "proc.h" +#include "quirks.h" +#include "endpoint.h" +#include "helper.h" +#include "debug.h" +#include "pcm.h" +#include "urb.h" +#include "format.h" + +MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); +MODULE_DESCRIPTION("USB Audio"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}"); + + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ +static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;/* Enable this card */ +/* Vendor/product IDs for this card */ +static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; +static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; +static int nrpacks = 8; /* max. number of packets per urb */ +static int async_unlink = 1; +static int device_setup[SNDRV_CARDS]; /* device parameter for this card */ +static int ignore_ctl_error; + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for the USB audio adapter."); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for the USB audio adapter."); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable USB audio adapter."); +module_param_array(vid, int, NULL, 0444); +MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device."); +module_param_array(pid, int, NULL, 0444); +MODULE_PARM_DESC(pid, "Product ID for the USB audio device."); +module_param(nrpacks, int, 0644); +MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB."); +module_param(async_unlink, bool, 0444); +MODULE_PARM_DESC(async_unlink, "Use async unlink mode."); +module_param_array(device_setup, int, NULL, 0444); +MODULE_PARM_DESC(device_setup, "Specific device setup (if needed)."); +module_param(ignore_ctl_error, bool, 0444); +MODULE_PARM_DESC(ignore_ctl_error, + "Ignore errors from USB controller for mixer interfaces."); + +/* + * we keep the snd_usb_audio_t instances by ourselves for merging + * the all interfaces on the same card as one sound device. + */ + +static DEFINE_MUTEX(register_mutex); +static struct snd_usb_audio *usb_chip[SNDRV_CARDS]; +static struct usb_driver usb_audio_driver; + +/* + * disconnect streams + * called from snd_usb_audio_disconnect() + */ +static void snd_usb_stream_disconnect(struct list_head *head) +{ + int idx; + struct snd_usb_stream *as; + struct snd_usb_substream *subs; + + as = list_entry(head, struct snd_usb_stream, list); + for (idx = 0; idx < 2; idx++) { + subs = &as->substream[idx]; + if (!subs->num_formats) + return; + snd_usb_release_substream_urbs(subs, 1); + subs->interface = -1; + } +} + +static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int interface) +{ + struct usb_device *dev = chip->dev; + struct usb_host_interface *alts; + struct usb_interface_descriptor *altsd; + struct usb_interface *iface = usb_ifnum_to_if(dev, interface); + + if (!iface) { + snd_printk(KERN_ERR "%d:%u:%d : does not exist\n", + dev->devnum, ctrlif, interface); + return -EINVAL; + } + + if (usb_interface_claimed(iface)) { + snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n", + dev->devnum, ctrlif, interface); + return -EINVAL; + } + + alts = &iface->altsetting[0]; + altsd = get_iface_desc(alts); + if ((altsd->bInterfaceClass == USB_CLASS_AUDIO || + altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) && + altsd->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING) { + int err = snd_usbmidi_create(chip->card, iface, + &chip->midi_list, NULL); + if (err < 0) { + snd_printk(KERN_ERR "%d:%u:%d: cannot create sequencer device\n", + dev->devnum, ctrlif, interface); + return -EINVAL; + } + usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); + + return 0; + } + + if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && + altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || + altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING) { + snd_printdd(KERN_ERR "%d:%u:%d: skipping non-supported interface %d\n", + dev->devnum, ctrlif, interface, altsd->bInterfaceClass); + /* skip non-supported classes */ + return -EINVAL; + } + + if (snd_usb_get_speed(dev) == USB_SPEED_LOW) { + snd_printk(KERN_ERR "low speed audio streaming not supported\n"); + return -EINVAL; + } + + if (! snd_usb_parse_audio_endpoints(chip, interface)) { + usb_set_interface(dev, interface, 0); /* reset the current interface */ + usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); + return -EINVAL; + } + + return 0; +} + +/* + * parse audio control descriptor and create pcm/midi streams + */ +static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif) +{ + struct usb_device *dev = chip->dev; + struct usb_host_interface *host_iface; + struct usb_interface_descriptor *altsd; + void *control_header; + int i, protocol; + + /* find audiocontrol interface */ + host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0]; + control_header = snd_usb_find_csint_desc(host_iface->extra, + host_iface->extralen, + NULL, UAC_HEADER); + altsd = get_iface_desc(host_iface); + protocol = altsd->bInterfaceProtocol; + + if (!control_header) { + snd_printk(KERN_ERR "cannot find UAC_HEADER\n"); + return -EINVAL; + } + + switch (protocol) { + case UAC_VERSION_1: { + struct uac_ac_header_descriptor_v1 *h1 = control_header; + + if (!h1->bInCollection) { + snd_printk(KERN_INFO "skipping empty audio interface (v1)\n"); + return -EINVAL; + } + + if (h1->bLength < sizeof(*h1) + h1->bInCollection) { + snd_printk(KERN_ERR "invalid UAC_HEADER (v1)\n"); + return -EINVAL; + } + + for (i = 0; i < h1->bInCollection; i++) + snd_usb_create_stream(chip, ctrlif, h1->baInterfaceNr[i]); + + break; + } + + case UAC_VERSION_2: { + struct uac_clock_source_descriptor *cs; + struct usb_interface_assoc_descriptor *assoc = + usb_ifnum_to_if(dev, ctrlif)->intf_assoc; + + if (!assoc) { + snd_printk(KERN_ERR "Audio class v2 interfaces need an interface association\n"); + return -EINVAL; + } + + /* FIXME: for now, we expect there is at least one clock source + * descriptor and we always take the first one. + * We should properly support devices with multiple clock sources, + * clock selectors and sample rate conversion units. */ + + cs = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen, + NULL, UAC_CLOCK_SOURCE); + + if (!cs) { + snd_printk(KERN_ERR "CLOCK_SOURCE descriptor not found\n"); + return -EINVAL; + } + + chip->clock_id = cs->bClockID; + + for (i = 0; i < assoc->bInterfaceCount; i++) { + int intf = assoc->bFirstInterface + i; + + if (intf != ctrlif) + snd_usb_create_stream(chip, ctrlif, intf); + } + + break; + } + + default: + snd_printk(KERN_ERR "unknown protocol version 0x%02x\n", protocol); + return -EINVAL; + } + + return 0; +} + +/* + * free the chip instance + * + * here we have to do not much, since pcm and controls are already freed + * + */ + +static int snd_usb_audio_free(struct snd_usb_audio *chip) +{ + kfree(chip); + return 0; +} + +static int snd_usb_audio_dev_free(struct snd_device *device) +{ + struct snd_usb_audio *chip = device->device_data; + return snd_usb_audio_free(chip); +} + + +/* + * create a chip instance and set its names. + */ +static int snd_usb_audio_create(struct usb_device *dev, int idx, + const struct snd_usb_audio_quirk *quirk, + struct snd_usb_audio **rchip) +{ + struct snd_card *card; + struct snd_usb_audio *chip; + int err, len; + char component[14]; + static struct snd_device_ops ops = { + .dev_free = snd_usb_audio_dev_free, + }; + + *rchip = NULL; + + if (snd_usb_get_speed(dev) != USB_SPEED_LOW && + snd_usb_get_speed(dev) != USB_SPEED_FULL && + snd_usb_get_speed(dev) != USB_SPEED_HIGH) { + snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev)); + return -ENXIO; + } + + err = snd_card_create(index[idx], id[idx], THIS_MODULE, 0, &card); + if (err < 0) { + snd_printk(KERN_ERR "cannot create card instance %d\n", idx); + return err; + } + + chip = kzalloc(sizeof(*chip), GFP_KERNEL); + if (! chip) { + snd_card_free(card); + return -ENOMEM; + } + + chip->index = idx; + chip->dev = dev; + chip->card = card; + chip->setup = device_setup[idx]; + chip->nrpacks = nrpacks; + chip->async_unlink = async_unlink; + + chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), + le16_to_cpu(dev->descriptor.idProduct)); + INIT_LIST_HEAD(&chip->pcm_list); + INIT_LIST_HEAD(&chip->midi_list); + INIT_LIST_HEAD(&chip->mixer_list); + + if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { + snd_usb_audio_free(chip); + snd_card_free(card); + return err; + } + + strcpy(card->driver, "USB-Audio"); + sprintf(component, "USB%04x:%04x", + USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id)); + snd_component_add(card, component); + + /* retrieve the device string as shortname */ + if (quirk && quirk->product_name) { + strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname)); + } else { + if (!dev->descriptor.iProduct || + usb_string(dev, dev->descriptor.iProduct, + card->shortname, sizeof(card->shortname)) <= 0) { + /* no name available from anywhere, so use ID */ + sprintf(card->shortname, "USB Device %#04x:%#04x", + USB_ID_VENDOR(chip->usb_id), + USB_ID_PRODUCT(chip->usb_id)); + } + } + + /* retrieve the vendor and device strings as longname */ + if (quirk && quirk->vendor_name) { + len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname)); + } else { + if (dev->descriptor.iManufacturer) + len = usb_string(dev, dev->descriptor.iManufacturer, + card->longname, sizeof(card->longname)); + else + len = 0; + /* we don't really care if there isn't any vendor string */ + } + if (len > 0) + strlcat(card->longname, " ", sizeof(card->longname)); + + strlcat(card->longname, card->shortname, sizeof(card->longname)); + + len = strlcat(card->longname, " at ", sizeof(card->longname)); + + if (len < sizeof(card->longname)) + usb_make_path(dev, card->longname + len, sizeof(card->longname) - len); + + strlcat(card->longname, + snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" : + snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" : + ", high speed", + sizeof(card->longname)); + + snd_usb_audio_create_proc(chip); + + *rchip = chip; + return 0; +} + +/* + * probe the active usb device + * + * note that this can be called multiple times per a device, when it + * includes multiple audio control interfaces. + * + * thus we check the usb device pointer and creates the card instance + * only at the first time. the successive calls of this function will + * append the pcm interface to the corresponding card. + */ +static void *snd_usb_audio_probe(struct usb_device *dev, + struct usb_interface *intf, + const struct usb_device_id *usb_id) +{ + const struct snd_usb_audio_quirk *quirk = (const struct snd_usb_audio_quirk *)usb_id->driver_info; + int i, err; + struct snd_usb_audio *chip; + struct usb_host_interface *alts; + int ifnum; + u32 id; + + alts = &intf->altsetting[0]; + ifnum = get_iface_desc(alts)->bInterfaceNumber; + id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), + le16_to_cpu(dev->descriptor.idProduct)); + if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum) + goto __err_val; + + if (snd_usb_apply_boot_quirk(dev, intf, quirk) < 0) + goto __err_val; + + /* + * found a config. now register to ALSA + */ + + /* check whether it's already registered */ + chip = NULL; + mutex_lock(®ister_mutex); + for (i = 0; i < SNDRV_CARDS; i++) { + if (usb_chip[i] && usb_chip[i]->dev == dev) { + if (usb_chip[i]->shutdown) { + snd_printk(KERN_ERR "USB device is in the shutdown state, cannot create a card instance\n"); + goto __error; + } + chip = usb_chip[i]; + break; + } + } + if (! chip) { + /* it's a fresh one. + * now look for an empty slot and create a new card instance + */ + for (i = 0; i < SNDRV_CARDS; i++) + if (enable[i] && ! usb_chip[i] && + (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) && + (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) { + if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) { + goto __error; + } + snd_card_set_dev(chip->card, &intf->dev); + break; + } + if (!chip) { + printk(KERN_ERR "no available usb audio device\n"); + goto __error; + } + } + + chip->txfr_quirk = 0; + err = 1; /* continue */ + if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) { + /* need some special handlings */ + if ((err = snd_usb_create_quirk(chip, intf, &usb_audio_driver, quirk)) < 0) + goto __error; + } + + if (err > 0) { + /* create normal USB audio interfaces */ + if (snd_usb_create_streams(chip, ifnum) < 0 || + snd_usb_create_mixer(chip, ifnum, ignore_ctl_error) < 0) { + goto __error; + } + } + + /* we are allowed to call snd_card_register() many times */ + if (snd_card_register(chip->card) < 0) { + goto __error; + } + + usb_chip[chip->index] = chip; + chip->num_interfaces++; + mutex_unlock(®ister_mutex); + return chip; + + __error: + if (chip && !chip->num_interfaces) + snd_card_free(chip->card); + mutex_unlock(®ister_mutex); + __err_val: + return NULL; +} + +/* + * we need to take care of counter, since disconnection can be called also + * many times as well as usb_audio_probe(). + */ +static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr) +{ + struct snd_usb_audio *chip; + struct snd_card *card; + struct list_head *p; + + if (ptr == (void *)-1L) + return; + + chip = ptr; + card = chip->card; + mutex_lock(®ister_mutex); + chip->shutdown = 1; + chip->num_interfaces--; + if (chip->num_interfaces <= 0) { + snd_card_disconnect(card); + /* release the pcm resources */ + list_for_each(p, &chip->pcm_list) { + snd_usb_stream_disconnect(p); + } + /* release the midi resources */ + list_for_each(p, &chip->midi_list) { + snd_usbmidi_disconnect(p); + } + /* release mixer resources */ + list_for_each(p, &chip->mixer_list) { + snd_usb_mixer_disconnect(p); + } + usb_chip[chip->index] = NULL; + mutex_unlock(®ister_mutex); + snd_card_free_when_closed(card); + } else { + mutex_unlock(®ister_mutex); + } +} + +/* + * new 2.5 USB kernel API + */ +static int usb_audio_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + void *chip; + chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id); + if (chip) { + usb_set_intfdata(intf, chip); + return 0; + } else + return -EIO; +} + +static void usb_audio_disconnect(struct usb_interface *intf) +{ + snd_usb_audio_disconnect(interface_to_usbdev(intf), + usb_get_intfdata(intf)); +} + +#ifdef CONFIG_PM +static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct snd_usb_audio *chip = usb_get_intfdata(intf); + struct list_head *p; + struct snd_usb_stream *as; + + if (chip == (void *)-1L) + return 0; + + snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); + if (!chip->num_suspended_intf++) { + list_for_each(p, &chip->pcm_list) { + as = list_entry(p, struct snd_usb_stream, list); + snd_pcm_suspend_all(as->pcm); + } + } + + return 0; +} + +static int usb_audio_resume(struct usb_interface *intf) +{ + struct snd_usb_audio *chip = usb_get_intfdata(intf); + + if (chip == (void *)-1L) + return 0; + if (--chip->num_suspended_intf) + return 0; + /* + * ALSA leaves material resumption to user space + * we just notify + */ + + snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); + + return 0; +} +#endif /* CONFIG_PM */ + +static struct usb_device_id usb_audio_ids [] = { +#include "quirks-table.h" + { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS), + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE (usb, usb_audio_ids); + +/* + * entry point for linux usb interface + */ + +static struct usb_driver usb_audio_driver = { + .name = "snd-usb-audio", + .probe = usb_audio_probe, + .disconnect = usb_audio_disconnect, + .suspend = usb_audio_suspend, + .resume = usb_audio_resume, + .id_table = usb_audio_ids, +}; + +static int __init snd_usb_audio_init(void) +{ + if (nrpacks < 1 || nrpacks > MAX_PACKS) { + printk(KERN_WARNING "invalid nrpacks value.\n"); + return -EINVAL; + } + return usb_register(&usb_audio_driver); +} + +static void __exit snd_usb_audio_cleanup(void) +{ + usb_deregister(&usb_audio_driver); +} + +module_init(snd_usb_audio_init); +module_exit(snd_usb_audio_cleanup); diff --git a/sound/usb/card.h b/sound/usb/card.h new file mode 100644 index 00000000000..71f03c15103 --- /dev/null +++ b/sound/usb/card.h @@ -0,0 +1,105 @@ +#ifndef __USBAUDIO_CARD_H +#define __USBAUDIO_CARD_H + +#define MAX_PACKS 20 +#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */ +#define MAX_URBS 8 +#define SYNC_URBS 4 /* always four urbs for sync */ +#define MAX_QUEUE 24 /* try not to exceed this queue length, in ms */ + +struct audioformat { + struct list_head list; + snd_pcm_format_t format; /* format type */ + unsigned int channels; /* # channels */ + unsigned int fmt_type; /* USB audio format type (1-3) */ + unsigned int frame_size; /* samples per frame for non-audio */ + int iface; /* interface number */ + unsigned char altsetting; /* corresponding alternate setting */ + unsigned char altset_idx; /* array index of altenate setting */ + unsigned char attributes; /* corresponding attributes of cs endpoint */ + unsigned char endpoint; /* endpoint */ + unsigned char ep_attr; /* endpoint attributes */ + unsigned char datainterval; /* log_2 of data packet interval */ + unsigned int maxpacksize; /* max. packet size */ + unsigned int rates; /* rate bitmasks */ + unsigned int rate_min, rate_max; /* min/max rates */ + unsigned int nr_rates; /* number of rate table entries */ + unsigned int *rate_table; /* rate table */ +}; + +struct snd_usb_substream; + +struct snd_urb_ctx { + struct urb *urb; + unsigned int buffer_size; /* size of data buffer, if data URB */ + struct snd_usb_substream *subs; + int index; /* index for urb array */ + int packets; /* number of packets per urb */ +}; + +struct snd_urb_ops { + int (*prepare)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); + int (*retire)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); + int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); + int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); +}; + +struct snd_usb_substream { + struct snd_usb_stream *stream; + struct usb_device *dev; + struct snd_pcm_substream *pcm_substream; + int direction; /* playback or capture */ + int interface; /* current interface */ + int endpoint; /* assigned endpoint */ + struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */ + unsigned int cur_rate; /* current rate (for hw_params callback) */ + unsigned int period_bytes; /* current period bytes (for hw_params callback) */ + unsigned int format; /* USB data format */ + unsigned int datapipe; /* the data i/o pipe */ + unsigned int syncpipe; /* 1 - async out or adaptive in */ + unsigned int datainterval; /* log_2 of data packet interval */ + unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */ + unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */ + unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */ + unsigned int freqmax; /* maximum sampling rate, used for buffer management */ + unsigned int phase; /* phase accumulator */ + unsigned int maxpacksize; /* max packet size in bytes */ + unsigned int maxframesize; /* max packet size in frames */ + unsigned int curpacksize; /* current packet size in bytes (for capture) */ + unsigned int curframesize; /* current packet size in frames (for capture) */ + unsigned int fill_max: 1; /* fill max packet size always */ + unsigned int txfr_quirk:1; /* allow sub-frame alignment */ + unsigned int fmt_type; /* USB audio format type (1-3) */ + + unsigned int running: 1; /* running status */ + + unsigned int hwptr_done; /* processed byte position in the buffer */ + unsigned int transfer_done; /* processed frames since last period update */ + unsigned long active_mask; /* bitmask of active urbs */ + unsigned long unlink_mask; /* bitmask of unlinked urbs */ + + unsigned int nurbs; /* # urbs */ + struct snd_urb_ctx dataurb[MAX_URBS]; /* data urb table */ + struct snd_urb_ctx syncurb[SYNC_URBS]; /* sync urb table */ + char *syncbuf; /* sync buffer for all sync URBs */ + dma_addr_t sync_dma; /* DMA address of syncbuf */ + + u64 formats; /* format bitmasks (all or'ed) */ + unsigned int num_formats; /* number of supported audio formats (list) */ + struct list_head fmt_list; /* format list */ + struct snd_pcm_hw_constraint_list rate_list; /* limited rates */ + spinlock_t lock; + + struct snd_urb_ops ops; /* callbacks (must be filled at init) */ +}; + +struct snd_usb_stream { + struct snd_usb_audio *chip; + struct snd_pcm *pcm; + int pcm_index; + unsigned int fmt_type; /* USB audio format type (1-3) */ + struct snd_usb_substream substream[2]; + struct list_head list; +}; + +#endif /* __USBAUDIO_CARD_H */ diff --git a/sound/usb/debug.h b/sound/usb/debug.h new file mode 100644 index 00000000000..343ec2d9ee6 --- /dev/null +++ b/sound/usb/debug.h @@ -0,0 +1,15 @@ +#ifndef __USBAUDIO_DEBUG_H +#define __USBAUDIO_DEBUG_H + +/* + * h/w constraints + */ + +#ifdef HW_CONST_DEBUG +#define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args) +#else +#define hwc_debug(fmt, args...) /**/ +#endif + +#endif /* __USBAUDIO_DEBUG_H */ + diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c new file mode 100644 index 00000000000..3f53dee1270 --- /dev/null +++ b/sound/usb/endpoint.c @@ -0,0 +1,358 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/init.h> +#include <linux/usb.h> +#include <linux/usb/audio.h> + +#include <sound/core.h> +#include <sound/pcm.h> + +#include "usbaudio.h" +#include "card.h" +#include "proc.h" +#include "quirks.h" +#include "endpoint.h" +#include "urb.h" +#include "pcm.h" +#include "helper.h" +#include "format.h" + +/* + * free a substream + */ +static void free_substream(struct snd_usb_substream *subs) +{ + struct list_head *p, *n; + + if (!subs->num_formats) + return; /* not initialized */ + list_for_each_safe(p, n, &subs->fmt_list) { + struct audioformat *fp = list_entry(p, struct audioformat, list); + kfree(fp->rate_table); + kfree(fp); + } + kfree(subs->rate_list.list); +} + + +/* + * free a usb stream instance + */ +static void snd_usb_audio_stream_free(struct snd_usb_stream *stream) +{ + free_substream(&stream->substream[0]); + free_substream(&stream->substream[1]); + list_del(&stream->list); + kfree(stream); +} + +static void snd_usb_audio_pcm_free(struct snd_pcm *pcm) +{ + struct snd_usb_stream *stream = pcm->private_data; + if (stream) { + stream->pcm = NULL; + snd_usb_audio_stream_free(stream); + } +} + + +/* + * add this endpoint to the chip instance. + * if a stream with the same endpoint already exists, append to it. + * if not, create a new pcm stream. + */ +int snd_usb_add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp) +{ + struct list_head *p; + struct snd_usb_stream *as; + struct snd_usb_substream *subs; + struct snd_pcm *pcm; + int err; + + list_for_each(p, &chip->pcm_list) { + as = list_entry(p, struct snd_usb_stream, list); + if (as->fmt_type != fp->fmt_type) + continue; + subs = &as->substream[stream]; + if (!subs->endpoint) + continue; + if (subs->endpoint == fp->endpoint) { + list_add_tail(&fp->list, &subs->fmt_list); + subs->num_formats++; + subs->formats |= 1ULL << fp->format; + return 0; + } + } + /* look for an empty stream */ + list_for_each(p, &chip->pcm_list) { + as = list_entry(p, struct snd_usb_stream, list); + if (as->fmt_type != fp->fmt_type) + continue; + subs = &as->substream[stream]; + if (subs->endpoint) + continue; + err = snd_pcm_new_stream(as->pcm, stream, 1); + if (err < 0) + return err; + snd_usb_init_substream(as, stream, fp); + return 0; + } + + /* create a new pcm */ + as = kzalloc(sizeof(*as), GFP_KERNEL); + if (!as) + return -ENOMEM; + as->pcm_index = chip->pcm_devs; + as->chip = chip; + as->fmt_type = fp->fmt_type; + err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs, + stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0, + stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1, + &pcm); + if (err < 0) { + kfree(as); + return err; + } + as->pcm = pcm; + pcm->private_data = as; + pcm->private_free = snd_usb_audio_pcm_free; + pcm->info_flags = 0; + if (chip->pcm_devs > 0) + sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs); + else + strcpy(pcm->name, "USB Audio"); + + snd_usb_init_substream(as, stream, fp); + + list_add(&as->list, &chip->pcm_list); + chip->pcm_devs++; + + snd_usb_proc_pcm_format_add(as); + + return 0; +} + +int snd_usb_parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no) +{ + struct usb_device *dev; + struct usb_interface *iface; + struct usb_host_interface *alts; + struct usb_interface_descriptor *altsd; + int i, altno, err, stream; + int format = 0, num_channels = 0; + struct audioformat *fp = NULL; + unsigned char *fmt, *csep; + int num, protocol; + + dev = chip->dev; + + /* parse the interface's altsettings */ + iface = usb_ifnum_to_if(dev, iface_no); + + num = iface->num_altsetting; + + /* + * Dallas DS4201 workaround: It presents 5 altsettings, but the last + * one misses syncpipe, and does not produce any sound. + */ + if (chip->usb_id == USB_ID(0x04fa, 0x4201)) + num = 4; + + for (i = 0; i < num; i++) { + alts = &iface->altsetting[i]; + altsd = get_iface_desc(alts); + protocol = altsd->bInterfaceProtocol; + /* skip invalid one */ + if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && + altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || + (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING && + altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) || + altsd->bNumEndpoints < 1 || + le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0) + continue; + /* must be isochronous */ + if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != + USB_ENDPOINT_XFER_ISOC) + continue; + /* check direction */ + stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ? + SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; + altno = altsd->bAlternateSetting; + + if (snd_usb_apply_interface_quirk(chip, iface_no, altno)) + continue; + + /* get audio formats */ + switch (protocol) { + case UAC_VERSION_1: { + struct uac_as_header_descriptor_v1 *as = + snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL); + + if (!as) { + snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n", + dev->devnum, iface_no, altno); + continue; + } + + if (as->bLength < sizeof(*as)) { + snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n", + dev->devnum, iface_no, altno); + continue; + } + + format = le16_to_cpu(as->wFormatTag); /* remember the format value */ + break; + } + + case UAC_VERSION_2: { + struct uac_as_header_descriptor_v2 *as = + snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL); + + if (!as) { + snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n", + dev->devnum, iface_no, altno); + continue; + } + + if (as->bLength < sizeof(*as)) { + snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n", + dev->devnum, iface_no, altno); + continue; + } + + num_channels = as->bNrChannels; + format = le32_to_cpu(as->bmFormats); + + break; + } + + default: + snd_printk(KERN_ERR "%d:%u:%d : unknown interface protocol %04x\n", + dev->devnum, iface_no, altno, protocol); + continue; + } + + /* get format type */ + fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_FORMAT_TYPE); + if (!fmt) { + snd_printk(KERN_ERR "%d:%u:%d : no UAC_FORMAT_TYPE desc\n", + dev->devnum, iface_no, altno); + continue; + } + if (((protocol == UAC_VERSION_1) && (fmt[0] < 8)) || + ((protocol == UAC_VERSION_2) && (fmt[0] != 6))) { + snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n", + dev->devnum, iface_no, altno); + continue; + } + + /* + * Blue Microphones workaround: The last altsetting is identical + * with the previous one, except for a larger packet size, but + * is actually a mislabeled two-channel setting; ignore it. + */ + if (fmt[4] == 1 && fmt[5] == 2 && altno == 2 && num == 3 && + fp && fp->altsetting == 1 && fp->channels == 1 && + fp->format == SNDRV_PCM_FORMAT_S16_LE && + protocol == UAC_VERSION_1 && + le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == + fp->maxpacksize * 2) + continue; + + csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT); + /* Creamware Noah has this descriptor after the 2nd endpoint */ + if (!csep && altsd->bNumEndpoints >= 2) + csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT); + if (!csep || csep[0] < 7 || csep[2] != UAC_EP_GENERAL) { + snd_printk(KERN_WARNING "%d:%u:%d : no or invalid" + " class specific endpoint descriptor\n", + dev->devnum, iface_no, altno); + csep = NULL; + } + + fp = kzalloc(sizeof(*fp), GFP_KERNEL); + if (! fp) { + snd_printk(KERN_ERR "cannot malloc\n"); + return -ENOMEM; + } + + fp->iface = iface_no; + fp->altsetting = altno; + fp->altset_idx = i; + fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; + fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; + fp->datainterval = snd_usb_parse_datainterval(chip, alts); + fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); + /* num_channels is only set for v2 interfaces */ + fp->channels = num_channels; + if (snd_usb_get_speed(dev) == USB_SPEED_HIGH) + fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) + * (fp->maxpacksize & 0x7ff); + fp->attributes = csep ? csep[3] : 0; + + /* some quirks for attributes here */ + + switch (chip->usb_id) { + case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */ + /* Optoplay sets the sample rate attribute although + * it seems not supporting it in fact. + */ + fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE; + break; + case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */ + case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ + /* doesn't set the sample rate attribute, but supports it */ + fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE; + break; + case USB_ID(0x047f, 0x0ca1): /* plantronics headset */ + case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is + an older model 77d:223) */ + /* + * plantronics headset and Griffin iMic have set adaptive-in + * although it's really not... + */ + fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE; + if (stream == SNDRV_PCM_STREAM_PLAYBACK) + fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE; + else + fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC; + break; + } + + /* ok, let's parse further... */ + if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream, alts) < 0) { + kfree(fp->rate_table); + kfree(fp); + continue; + } + + snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint %#x\n", dev->devnum, iface_no, altno, fp->endpoint); + err = snd_usb_add_audio_endpoint(chip, stream, fp); + if (err < 0) { + kfree(fp->rate_table); + kfree(fp); + return err; + } + /* try to set the interface... */ + usb_set_interface(chip->dev, iface_no, altno); + snd_usb_init_pitch(chip->dev, iface_no, alts, fp); + snd_usb_init_sample_rate(chip->dev, iface_no, alts, fp, fp->rate_max); + } + return 0; +} + diff --git a/sound/usb/endpoint.h b/sound/usb/endpoint.h new file mode 100644 index 00000000000..64dd0db023b --- /dev/null +++ b/sound/usb/endpoint.h @@ -0,0 +1,11 @@ +#ifndef __USBAUDIO_ENDPOINT_H +#define __USBAUDIO_ENDPOINT_H + +int snd_usb_parse_audio_endpoints(struct snd_usb_audio *chip, + int iface_no); + +int snd_usb_add_audio_endpoint(struct snd_usb_audio *chip, + int stream, + struct audioformat *fp); + +#endif /* __USBAUDIO_ENDPOINT_H */ diff --git a/sound/usb/format.c b/sound/usb/format.c new file mode 100644 index 00000000000..cbfe0c23dbd --- /dev/null +++ b/sound/usb/format.c @@ -0,0 +1,445 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/init.h> +#include <linux/usb.h> +#include <linux/usb/audio.h> + +#include <sound/core.h> +#include <sound/pcm.h> + +#include "usbaudio.h" +#include "card.h" +#include "quirks.h" +#include "helper.h" +#include "debug.h" + +/* + * parse the audio format type I descriptor + * and returns the corresponding pcm format + * + * @dev: usb device + * @fp: audioformat record + * @format: the format tag (wFormatTag) + * @fmt: the format type descriptor + */ +static int parse_audio_format_i_type(struct snd_usb_audio *chip, + struct audioformat *fp, + int format, void *_fmt, + int protocol) +{ + int pcm_format, i; + int sample_width, sample_bytes; + + switch (protocol) { + case UAC_VERSION_1: { + struct uac_format_type_i_discrete_descriptor *fmt = _fmt; + sample_width = fmt->bBitResolution; + sample_bytes = fmt->bSubframeSize; + break; + } + + case UAC_VERSION_2: { + struct uac_format_type_i_ext_descriptor *fmt = _fmt; + sample_width = fmt->bBitResolution; + sample_bytes = fmt->bSubslotSize; + + /* + * FIXME + * USB audio class v2 devices specify a bitmap of possible + * audio formats rather than one fix value. For now, we just + * pick one of them and report that as the only possible + * value for this setting. + * The bit allocation map is in fact compatible to the + * wFormatTag of the v1 AS streaming descriptors, which is why + * we can simply map the matrix. + */ + + for (i = 0; i < 5; i++) + if (format & (1UL << i)) { + format = i + 1; + break; + } + + break; + } + + default: + return -EINVAL; + } + + /* FIXME: correct endianess and sign? */ + pcm_format = -1; + + switch (format) { + case UAC_FORMAT_TYPE_I_UNDEFINED: /* some devices don't define this correctly... */ + snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n", + chip->dev->devnum, fp->iface, fp->altsetting); + /* fall-through */ + case UAC_FORMAT_TYPE_I_PCM: + if (sample_width > sample_bytes * 8) { + snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n", + chip->dev->devnum, fp->iface, fp->altsetting, + sample_width, sample_bytes); + } + /* check the format byte size */ + switch (sample_bytes) { + case 1: + pcm_format = SNDRV_PCM_FORMAT_S8; + break; + case 2: + if (snd_usb_is_big_endian_format(chip, fp)) + pcm_format = SNDRV_PCM_FORMAT_S16_BE; /* grrr, big endian!! */ + else + pcm_format = SNDRV_PCM_FORMAT_S16_LE; + break; + case 3: + if (snd_usb_is_big_endian_format(chip, fp)) + pcm_format = SNDRV_PCM_FORMAT_S24_3BE; /* grrr, big endian!! */ + else + pcm_format = SNDRV_PCM_FORMAT_S24_3LE; + break; + case 4: + pcm_format = SNDRV_PCM_FORMAT_S32_LE; + break; + default: + snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n", + chip->dev->devnum, fp->iface, fp->altsetting, + sample_width, sample_bytes); + break; + } + break; + case UAC_FORMAT_TYPE_I_PCM8: + pcm_format = SNDRV_PCM_FORMAT_U8; + + /* Dallas DS4201 workaround: it advertises U8 format, but really + supports S8. */ + if (chip->usb_id == USB_ID(0x04fa, 0x4201)) + pcm_format = SNDRV_PCM_FORMAT_S8; + break; + case UAC_FORMAT_TYPE_I_IEEE_FLOAT: + pcm_format = SNDRV_PCM_FORMAT_FLOAT_LE; + break; + case UAC_FORMAT_TYPE_I_ALAW: + pcm_format = SNDRV_PCM_FORMAT_A_LAW; + break; + case UAC_FORMAT_TYPE_I_MULAW: + pcm_format = SNDRV_PCM_FORMAT_MU_LAW; + break; + default: + snd_printk(KERN_INFO "%d:%u:%d : unsupported format type %d\n", + chip->dev->devnum, fp->iface, fp->altsetting, format); + break; + } + return pcm_format; +} + + +/* + * parse the format descriptor and stores the possible sample rates + * on the audioformat table (audio class v1). + * + * @dev: usb device + * @fp: audioformat record + * @fmt: the format descriptor + * @offset: the start offset of descriptor pointing the rate type + * (7 for type I and II, 8 for type II) + */ +static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp, + unsigned char *fmt, int offset) +{ + int nr_rates = fmt[offset]; + + if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) { + snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n", + chip->dev->devnum, fp->iface, fp->altsetting); + return -1; + } + + if (nr_rates) { + /* + * build the rate table and bitmap flags + */ + int r, idx; + + fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); + if (fp->rate_table == NULL) { + snd_printk(KERN_ERR "cannot malloc\n"); + return -1; + } + + fp->nr_rates = 0; + fp->rate_min = fp->rate_max = 0; + for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { + unsigned int rate = combine_triple(&fmt[idx]); + if (!rate) + continue; + /* C-Media CM6501 mislabels its 96 kHz altsetting */ + if (rate == 48000 && nr_rates == 1 && + (chip->usb_id == USB_ID(0x0d8c, 0x0201) || + chip->usb_id == USB_ID(0x0d8c, 0x0102)) && + fp->altsetting == 5 && fp->maxpacksize == 392) + rate = 96000; + /* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */ + if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068)) + rate = 8000; + + fp->rate_table[fp->nr_rates] = rate; + if (!fp->rate_min || rate < fp->rate_min) + fp->rate_min = rate; + if (!fp->rate_max || rate > fp->rate_max) + fp->rate_max = rate; + fp->rates |= snd_pcm_rate_to_rate_bit(rate); + fp->nr_rates++; + } + if (!fp->nr_rates) { + hwc_debug("All rates were zero. Skipping format!\n"); + return -1; + } + } else { + /* continuous rates */ + fp->rates = SNDRV_PCM_RATE_CONTINUOUS; + fp->rate_min = combine_triple(&fmt[offset + 1]); + fp->rate_max = combine_triple(&fmt[offset + 4]); + } + return 0; +} + +/* + * parse the format descriptor and stores the possible sample rates + * on the audioformat table (audio class v2). + */ +static int parse_audio_format_rates_v2(struct snd_usb_audio *chip, + struct audioformat *fp, + struct usb_host_interface *iface) +{ + struct usb_device *dev = chip->dev; + unsigned char tmp[2], *data; + int i, nr_rates, data_size, ret = 0; + + /* get the number of sample rates first by only fetching 2 bytes */ + ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, + 0x0100, chip->clock_id << 8, tmp, sizeof(tmp), 1000); + + if (ret < 0) { + snd_printk(KERN_ERR "unable to retrieve number of sample rates\n"); + goto err; + } + + nr_rates = (tmp[1] << 8) | tmp[0]; + data_size = 2 + 12 * nr_rates; + data = kzalloc(data_size, GFP_KERNEL); + if (!data) { + ret = -ENOMEM; + goto err; + } + + /* now get the full information */ + ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, + 0x0100, chip->clock_id << 8, data, data_size, 1000); + + if (ret < 0) { + snd_printk(KERN_ERR "unable to retrieve sample rate range\n"); + ret = -EINVAL; + goto err_free; + } + + fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); + if (!fp->rate_table) { + ret = -ENOMEM; + goto err_free; + } + + fp->nr_rates = 0; + fp->rate_min = fp->rate_max = 0; + + for (i = 0; i < nr_rates; i++) { + int rate = combine_quad(&data[2 + 12 * i]); + + fp->rate_table[fp->nr_rates] = rate; + if (!fp->rate_min || rate < fp->rate_min) + fp->rate_min = rate; + if (!fp->rate_max || rate > fp->rate_max) + fp->rate_max = rate; + fp->rates |= snd_pcm_rate_to_rate_bit(rate); + fp->nr_rates++; + } + +err_free: + kfree(data); +err: + return ret; +} + +/* + * parse the format type I and III descriptors + */ +static int parse_audio_format_i(struct snd_usb_audio *chip, + struct audioformat *fp, + int format, void *_fmt, + struct usb_host_interface *iface) +{ + struct usb_interface_descriptor *altsd = get_iface_desc(iface); + struct uac_format_type_i_discrete_descriptor *fmt = _fmt; + int protocol = altsd->bInterfaceProtocol; + int pcm_format, ret; + + if (fmt->bFormatType == UAC_FORMAT_TYPE_III) { + /* FIXME: the format type is really IECxxx + * but we give normal PCM format to get the existing + * apps working... + */ + switch (chip->usb_id) { + + case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ + if (chip->setup == 0x00 && + fp->altsetting == 6) + pcm_format = SNDRV_PCM_FORMAT_S16_BE; + else + pcm_format = SNDRV_PCM_FORMAT_S16_LE; + break; + default: + pcm_format = SNDRV_PCM_FORMAT_S16_LE; + } + } else { + pcm_format = parse_audio_format_i_type(chip, fp, format, fmt, protocol); + if (pcm_format < 0) + return -1; + } + + fp->format = pcm_format; + + /* gather possible sample rates */ + /* audio class v1 reports possible sample rates as part of the + * proprietary class specific descriptor. + * audio class v2 uses class specific EP0 range requests for that. + */ + switch (protocol) { + case UAC_VERSION_1: + fp->channels = fmt->bNrChannels; + ret = parse_audio_format_rates_v1(chip, fp, _fmt, 7); + break; + case UAC_VERSION_2: + /* fp->channels is already set in this case */ + ret = parse_audio_format_rates_v2(chip, fp, iface); + break; + } + + if (fp->channels < 1) { + snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n", + chip->dev->devnum, fp->iface, fp->altsetting, fp->channels); + return -1; + } + + return ret; +} + +/* + * parse the format type II descriptor + */ +static int parse_audio_format_ii(struct snd_usb_audio *chip, + struct audioformat *fp, + int format, void *_fmt, + struct usb_host_interface *iface) +{ + int brate, framesize, ret; + struct usb_interface_descriptor *altsd = get_iface_desc(iface); + int protocol = altsd->bInterfaceProtocol; + + switch (format) { + case UAC_FORMAT_TYPE_II_AC3: + /* FIXME: there is no AC3 format defined yet */ + // fp->format = SNDRV_PCM_FORMAT_AC3; + fp->format = SNDRV_PCM_FORMAT_U8; /* temporarily hack to receive byte streams */ + break; + case UAC_FORMAT_TYPE_II_MPEG: + fp->format = SNDRV_PCM_FORMAT_MPEG; + break; + default: + snd_printd(KERN_INFO "%d:%u:%d : unknown format tag %#x is detected. processed as MPEG.\n", + chip->dev->devnum, fp->iface, fp->altsetting, format); + fp->format = SNDRV_PCM_FORMAT_MPEG; + break; + } + + fp->channels = 1; + + switch (protocol) { + case UAC_VERSION_1: { + struct uac_format_type_ii_discrete_descriptor *fmt = _fmt; + brate = le16_to_cpu(fmt->wMaxBitRate); + framesize = le16_to_cpu(fmt->wSamplesPerFrame); + snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); + fp->frame_size = framesize; + ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */ + break; + } + case UAC_VERSION_2: { + struct uac_format_type_ii_ext_descriptor *fmt = _fmt; + brate = le16_to_cpu(fmt->wMaxBitRate); + framesize = le16_to_cpu(fmt->wSamplesPerFrame); + snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); + fp->frame_size = framesize; + ret = parse_audio_format_rates_v2(chip, fp, iface); + break; + } + } + + return ret; +} + +int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp, + int format, unsigned char *fmt, int stream, + struct usb_host_interface *iface) +{ + int err; + + switch (fmt[3]) { + case UAC_FORMAT_TYPE_I: + case UAC_FORMAT_TYPE_III: + err = parse_audio_format_i(chip, fp, format, fmt, iface); + break; + case UAC_FORMAT_TYPE_II: + err = parse_audio_format_ii(chip, fp, format, fmt, iface); + break; + default: + snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n", + chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]); + return -1; + } + fp->fmt_type = fmt[3]; + if (err < 0) + return err; +#if 1 + /* FIXME: temporary hack for extigy/audigy 2 nx/zs */ + /* extigy apparently supports sample rates other than 48k + * but not in ordinary way. so we enable only 48k atm. + */ + if (chip->usb_id == USB_ID(0x041e, 0x3000) || + chip->usb_id == USB_ID(0x041e, 0x3020) || + chip->usb_id == USB_ID(0x041e, 0x3061)) { + if (fmt[3] == UAC_FORMAT_TYPE_I && + fp->rates != SNDRV_PCM_RATE_48000 && + fp->rates != SNDRV_PCM_RATE_96000) + return -1; + } +#endif + return 0; +} + diff --git a/sound/usb/format.h b/sound/usb/format.h new file mode 100644 index 00000000000..8298c4e8ddf --- /dev/null +++ b/sound/usb/format.h @@ -0,0 +1,8 @@ +#ifndef __USBAUDIO_FORMAT_H +#define __USBAUDIO_FORMAT_H + +int snd_usb_parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp, + int format, unsigned char *fmt, int stream, + struct usb_host_interface *iface); + +#endif /* __USBAUDIO_FORMAT_H */ diff --git a/sound/usb/helper.c b/sound/usb/helper.c new file mode 100644 index 00000000000..ba7dba4d5cf --- /dev/null +++ b/sound/usb/helper.c @@ -0,0 +1,112 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/init.h> +#include <linux/usb.h> + +#include "usbaudio.h" +#include "helper.h" + +/* + * combine bytes and get an integer value + */ +unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size) +{ + switch (size) { + case 1: return *bytes; + case 2: return combine_word(bytes); + case 3: return combine_triple(bytes); + case 4: return combine_quad(bytes); + default: return 0; + } +} + +/* + * parse descriptor buffer and return the pointer starting the given + * descriptor type. + */ +void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype) +{ + u8 *p, *end, *next; + + p = descstart; + end = p + desclen; + for (; p < end;) { + if (p[0] < 2) + return NULL; + next = p + p[0]; + if (next > end) + return NULL; + if (p[1] == dtype && (!after || (void *)p > after)) { + return p; + } + p = next; + } + return NULL; +} + +/* + * find a class-specified interface descriptor with the given subtype. + */ +void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype) +{ + unsigned char *p = after; + + while ((p = snd_usb_find_desc(buffer, buflen, p, + USB_DT_CS_INTERFACE)) != NULL) { + if (p[0] >= 3 && p[2] == dsubtype) + return p; + } + return NULL; +} + +/* + * Wrapper for usb_control_msg(). + * Allocates a temp buffer to prevent dmaing from/to the stack. + */ +int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, + __u8 requesttype, __u16 value, __u16 index, void *data, + __u16 size, int timeout) +{ + int err; + void *buf = NULL; + + if (size > 0) { + buf = kmemdup(data, size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + } + err = usb_control_msg(dev, pipe, request, requesttype, + value, index, buf, size, timeout); + if (size > 0) { + memcpy(data, buf, size); + kfree(buf); + } + return err; +} + +unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip, + struct usb_host_interface *alts) +{ + if (snd_usb_get_speed(chip->dev) == USB_SPEED_HIGH && + get_endpoint(alts, 0)->bInterval >= 1 && + get_endpoint(alts, 0)->bInterval <= 4) + return get_endpoint(alts, 0)->bInterval - 1; + else + return 0; +} + diff --git a/sound/usb/helper.h b/sound/usb/helper.h new file mode 100644 index 00000000000..a6b0e51b3a9 --- /dev/null +++ b/sound/usb/helper.h @@ -0,0 +1,32 @@ +#ifndef __USBAUDIO_HELPER_H +#define __USBAUDIO_HELPER_H + +unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size); + +void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype); +void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype); + +int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, + __u8 request, __u8 requesttype, __u16 value, __u16 index, + void *data, __u16 size, int timeout); + +unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip, + struct usb_host_interface *alts); + +/* + * retrieve usb_interface descriptor from the host interface + * (conditional for compatibility with the older API) + */ +#ifndef get_iface_desc +#define get_iface_desc(iface) (&(iface)->desc) +#define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc) +#define get_ep_desc(ep) (&(ep)->desc) +#define get_cfg_desc(cfg) (&(cfg)->desc) +#endif + +#ifndef snd_usb_get_speed +#define snd_usb_get_speed(dev) ((dev)->speed) +#endif + + +#endif /* __USBAUDIO_HELPER_H */ diff --git a/sound/usb/usbmidi.c b/sound/usb/midi.c index 5915a04cdb9..c6ee4a18e51 100644 --- a/sound/usb/usbmidi.c +++ b/sound/usb/midi.c @@ -53,8 +53,8 @@ #include <sound/rawmidi.h> #include <sound/asequencer.h> #include "usbaudio.h" -#include "usbmidi.h" - +#include "midi.h" +#include "helper.h" /* * define this to log all USB packets diff --git a/sound/usb/usbmidi.h b/sound/usb/midi.h index 2089ec987c6..2089ec987c6 100644 --- a/sound/usb/usbmidi.h +++ b/sound/usb/midi.h diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c index b4a4cb46a17..796d8b25ee8 100644 --- a/sound/usb/misc/ua101.c +++ b/sound/usb/misc/ua101.c @@ -24,7 +24,7 @@ #include <sound/pcm.h> #include <sound/pcm_params.h> #include "../usbaudio.h" -#include "../usbmidi.h" +#include "../midi.h" MODULE_DESCRIPTION("Edirol UA-101/1000 driver"); MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c new file mode 100644 index 00000000000..87863ccf906 --- /dev/null +++ b/sound/usb/pcm.c @@ -0,0 +1,845 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/init.h> +#include <linux/usb.h> +#include <linux/usb/audio.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> + +#include "usbaudio.h" +#include "card.h" +#include "quirks.h" +#include "debug.h" +#include "urb.h" +#include "helper.h" +#include "pcm.h" + +/* + * return the current pcm pointer. just based on the hwptr_done value. + */ +static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) +{ + struct snd_usb_substream *subs; + unsigned int hwptr_done; + + subs = (struct snd_usb_substream *)substream->runtime->private_data; + spin_lock(&subs->lock); + hwptr_done = subs->hwptr_done; + spin_unlock(&subs->lock); + return hwptr_done / (substream->runtime->frame_bits >> 3); +} + +/* + * find a matching audio format + */ +static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format, + unsigned int rate, unsigned int channels) +{ + struct list_head *p; + struct audioformat *found = NULL; + int cur_attr = 0, attr; + + list_for_each(p, &subs->fmt_list) { + struct audioformat *fp; + fp = list_entry(p, struct audioformat, list); + if (fp->format != format || fp->channels != channels) + continue; + if (rate < fp->rate_min || rate > fp->rate_max) + continue; + if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { + unsigned int i; + for (i = 0; i < fp->nr_rates; i++) + if (fp->rate_table[i] == rate) + break; + if (i >= fp->nr_rates) + continue; + } + attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE; + if (! found) { + found = fp; + cur_attr = attr; + continue; + } + /* avoid async out and adaptive in if the other method + * supports the same format. + * this is a workaround for the case like + * M-audio audiophile USB. + */ + if (attr != cur_attr) { + if ((attr == USB_ENDPOINT_SYNC_ASYNC && + subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || + (attr == USB_ENDPOINT_SYNC_ADAPTIVE && + subs->direction == SNDRV_PCM_STREAM_CAPTURE)) + continue; + if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC && + subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || + (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE && + subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { + found = fp; + cur_attr = attr; + continue; + } + } + /* find the format with the largest max. packet size */ + if (fp->maxpacksize > found->maxpacksize) { + found = fp; + cur_attr = attr; + } + } + return found; +} + + +/* + * initialize the picth control and sample rate + */ +int snd_usb_init_pitch(struct usb_device *dev, int iface, + struct usb_host_interface *alts, + struct audioformat *fmt) +{ + unsigned int ep; + unsigned char data[1]; + int err; + + ep = get_endpoint(alts, 0)->bEndpointAddress; + /* if endpoint has pitch control, enable it */ + if (fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL) { + data[0] = 1; + if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, + USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, + UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) { + snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n", + dev->devnum, iface, ep); + return err; + } + } + return 0; +} + +int snd_usb_init_sample_rate(struct usb_device *dev, int iface, + struct usb_host_interface *alts, + struct audioformat *fmt, int rate) +{ + unsigned int ep; + unsigned char data[3]; + int err; + + ep = get_endpoint(alts, 0)->bEndpointAddress; + /* if endpoint has sampling rate control, set it */ + if (fmt->attributes & UAC_EP_CS_ATTR_SAMPLE_RATE) { + int crate; + data[0] = rate; + data[1] = rate >> 8; + data[2] = rate >> 16; + if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, + USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, + UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000)) < 0) { + snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep %#x\n", + dev->devnum, iface, fmt->altsetting, rate, ep); + return err; + } + if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR, + USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN, + UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000)) < 0) { + snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep %#x\n", + dev->devnum, iface, fmt->altsetting, ep); + return 0; /* some devices don't support reading */ + } + crate = data[0] | (data[1] << 8) | (data[2] << 16); + if (crate != rate) { + snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate); + // runtime->rate = crate; + } + } + return 0; +} + +/* + * find a matching format and set up the interface + */ +static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) +{ + struct usb_device *dev = subs->dev; + struct usb_host_interface *alts; + struct usb_interface_descriptor *altsd; + struct usb_interface *iface; + unsigned int ep, attr; + int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; + int err; + + iface = usb_ifnum_to_if(dev, fmt->iface); + if (WARN_ON(!iface)) + return -EINVAL; + alts = &iface->altsetting[fmt->altset_idx]; + altsd = get_iface_desc(alts); + if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting)) + return -EINVAL; + + if (fmt == subs->cur_audiofmt) + return 0; + + /* close the old interface */ + if (subs->interface >= 0 && subs->interface != fmt->iface) { + if (usb_set_interface(subs->dev, subs->interface, 0) < 0) { + snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed\n", + dev->devnum, fmt->iface, fmt->altsetting); + return -EIO; + } + subs->interface = -1; + subs->format = 0; + } + + /* set interface */ + if (subs->interface != fmt->iface || subs->format != fmt->altset_idx) { + if (usb_set_interface(dev, fmt->iface, fmt->altsetting) < 0) { + snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed\n", + dev->devnum, fmt->iface, fmt->altsetting); + return -EIO; + } + snd_printdd(KERN_INFO "setting usb interface %d:%d\n", fmt->iface, fmt->altsetting); + subs->interface = fmt->iface; + subs->format = fmt->altset_idx; + } + + /* create a data pipe */ + ep = fmt->endpoint & USB_ENDPOINT_NUMBER_MASK; + if (is_playback) + subs->datapipe = usb_sndisocpipe(dev, ep); + else + subs->datapipe = usb_rcvisocpipe(dev, ep); + subs->datainterval = fmt->datainterval; + subs->syncpipe = subs->syncinterval = 0; + subs->maxpacksize = fmt->maxpacksize; + subs->fill_max = 0; + + /* we need a sync pipe in async OUT or adaptive IN mode */ + /* check the number of EP, since some devices have broken + * descriptors which fool us. if it has only one EP, + * assume it as adaptive-out or sync-in. + */ + attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; + if (((is_playback && attr == USB_ENDPOINT_SYNC_ASYNC) || + (! is_playback && attr == USB_ENDPOINT_SYNC_ADAPTIVE)) && + altsd->bNumEndpoints >= 2) { + /* check sync-pipe endpoint */ + /* ... and check descriptor size before accessing bSynchAddress + because there is a version of the SB Audigy 2 NX firmware lacking + the audio fields in the endpoint descriptors */ + if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 || + (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && + get_endpoint(alts, 1)->bSynchAddress != 0)) { + snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n", + dev->devnum, fmt->iface, fmt->altsetting); + return -EINVAL; + } + ep = get_endpoint(alts, 1)->bEndpointAddress; + if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && + (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || + (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { + snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n", + dev->devnum, fmt->iface, fmt->altsetting); + return -EINVAL; + } + ep &= USB_ENDPOINT_NUMBER_MASK; + if (is_playback) + subs->syncpipe = usb_rcvisocpipe(dev, ep); + else + subs->syncpipe = usb_sndisocpipe(dev, ep); + if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && + get_endpoint(alts, 1)->bRefresh >= 1 && + get_endpoint(alts, 1)->bRefresh <= 9) + subs->syncinterval = get_endpoint(alts, 1)->bRefresh; + else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) + subs->syncinterval = 1; + else if (get_endpoint(alts, 1)->bInterval >= 1 && + get_endpoint(alts, 1)->bInterval <= 16) + subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1; + else + subs->syncinterval = 3; + } + + /* always fill max packet size */ + if (fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX) + subs->fill_max = 1; + + if ((err = snd_usb_init_pitch(dev, subs->interface, alts, fmt)) < 0) + return err; + + subs->cur_audiofmt = fmt; + + snd_usb_set_format_quirk(subs, fmt); + +#if 0 + printk(KERN_DEBUG + "setting done: format = %d, rate = %d..%d, channels = %d\n", + fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels); + printk(KERN_DEBUG + " datapipe = 0x%0x, syncpipe = 0x%0x\n", + subs->datapipe, subs->syncpipe); +#endif + + return 0; +} + +/* + * hw_params callback + * + * allocate a buffer and set the given audio format. + * + * so far we use a physically linear buffer although packetize transfer + * doesn't need a continuous area. + * if sg buffer is supported on the later version of alsa, we'll follow + * that. + */ +static int snd_usb_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_usb_substream *subs = substream->runtime->private_data; + struct audioformat *fmt; + unsigned int channels, rate, format; + int ret, changed; + + ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, + params_buffer_bytes(hw_params)); + if (ret < 0) + return ret; + + format = params_format(hw_params); + rate = params_rate(hw_params); + channels = params_channels(hw_params); + fmt = find_format(subs, format, rate, channels); + if (!fmt) { + snd_printd(KERN_DEBUG "cannot set format: format = %#x, rate = %d, channels = %d\n", + format, rate, channels); + return -EINVAL; + } + + changed = subs->cur_audiofmt != fmt || + subs->period_bytes != params_period_bytes(hw_params) || + subs->cur_rate != rate; + if ((ret = set_format(subs, fmt)) < 0) + return ret; + + if (subs->cur_rate != rate) { + struct usb_host_interface *alts; + struct usb_interface *iface; + iface = usb_ifnum_to_if(subs->dev, fmt->iface); + alts = &iface->altsetting[fmt->altset_idx]; + ret = snd_usb_init_sample_rate(subs->dev, subs->interface, alts, fmt, rate); + if (ret < 0) + return ret; + subs->cur_rate = rate; + } + + if (changed) { + /* format changed */ + snd_usb_release_substream_urbs(subs, 0); + /* influenced: period_bytes, channels, rate, format, */ + ret = snd_usb_init_substream_urbs(subs, params_period_bytes(hw_params), + params_rate(hw_params), + snd_pcm_format_physical_width(params_format(hw_params)) * + params_channels(hw_params)); + } + + return ret; +} + +/* + * hw_free callback + * + * reset the audio format and release the buffer + */ +static int snd_usb_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_usb_substream *subs = substream->runtime->private_data; + + subs->cur_audiofmt = NULL; + subs->cur_rate = 0; + subs->period_bytes = 0; + if (!subs->stream->chip->shutdown) + snd_usb_release_substream_urbs(subs, 0); + return snd_pcm_lib_free_vmalloc_buffer(substream); +} + +/* + * prepare callback + * + * only a few subtle things... + */ +static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_usb_substream *subs = runtime->private_data; + + if (! subs->cur_audiofmt) { + snd_printk(KERN_ERR "usbaudio: no format is specified!\n"); + return -ENXIO; + } + + /* some unit conversions in runtime */ + subs->maxframesize = bytes_to_frames(runtime, subs->maxpacksize); + subs->curframesize = bytes_to_frames(runtime, subs->curpacksize); + + /* reset the pointer */ + subs->hwptr_done = 0; + subs->transfer_done = 0; + subs->phase = 0; + runtime->delay = 0; + + return snd_usb_substream_prepare(subs, runtime); +} + +static struct snd_pcm_hardware snd_usb_hardware = +{ + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_BATCH | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_PAUSE, + .buffer_bytes_max = 1024 * 1024, + .period_bytes_min = 64, + .period_bytes_max = 512 * 1024, + .periods_min = 2, + .periods_max = 1024, +}; + +static int hw_check_valid_format(struct snd_usb_substream *subs, + struct snd_pcm_hw_params *params, + struct audioformat *fp) +{ + struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); + unsigned int ptime; + + /* check the format */ + if (!snd_mask_test(fmts, fp->format)) { + hwc_debug(" > check: no supported format %d\n", fp->format); + return 0; + } + /* check the channels */ + if (fp->channels < ct->min || fp->channels > ct->max) { + hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); + return 0; + } + /* check the rate is within the range */ + if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { + hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); + return 0; + } + if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { + hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); + return 0; + } + /* check whether the period time is >= the data packet interval */ + if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) { + ptime = 125 * (1 << fp->datainterval); + if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { + hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); + return 0; + } + } + return 1; +} + +static int hw_rule_rate(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_usb_substream *subs = rule->private; + struct list_head *p; + struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + unsigned int rmin, rmax; + int changed; + + hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); + changed = 0; + rmin = rmax = 0; + list_for_each(p, &subs->fmt_list) { + struct audioformat *fp; + fp = list_entry(p, struct audioformat, list); + if (!hw_check_valid_format(subs, params, fp)) + continue; + if (changed++) { + if (rmin > fp->rate_min) + rmin = fp->rate_min; + if (rmax < fp->rate_max) + rmax = fp->rate_max; + } else { + rmin = fp->rate_min; + rmax = fp->rate_max; + } + } + + if (!changed) { + hwc_debug(" --> get empty\n"); + it->empty = 1; + return -EINVAL; + } + + changed = 0; + if (it->min < rmin) { + it->min = rmin; + it->openmin = 0; + changed = 1; + } + if (it->max > rmax) { + it->max = rmax; + it->openmax = 0; + changed = 1; + } + if (snd_interval_checkempty(it)) { + it->empty = 1; + return -EINVAL; + } + hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); + return changed; +} + + +static int hw_rule_channels(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_usb_substream *subs = rule->private; + struct list_head *p; + struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); + unsigned int rmin, rmax; + int changed; + + hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); + changed = 0; + rmin = rmax = 0; + list_for_each(p, &subs->fmt_list) { + struct audioformat *fp; + fp = list_entry(p, struct audioformat, list); + if (!hw_check_valid_format(subs, params, fp)) + continue; + if (changed++) { + if (rmin > fp->channels) + rmin = fp->channels; + if (rmax < fp->channels) + rmax = fp->channels; + } else { + rmin = fp->channels; + rmax = fp->channels; + } + } + + if (!changed) { + hwc_debug(" --> get empty\n"); + it->empty = 1; + return -EINVAL; + } + + changed = 0; + if (it->min < rmin) { + it->min = rmin; + it->openmin = 0; + changed = 1; + } + if (it->max > rmax) { + it->max = rmax; + it->openmax = 0; + changed = 1; + } + if (snd_interval_checkempty(it)) { + it->empty = 1; + return -EINVAL; + } + hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); + return changed; +} + +static int hw_rule_format(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_usb_substream *subs = rule->private; + struct list_head *p; + struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + u64 fbits; + u32 oldbits[2]; + int changed; + + hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); + fbits = 0; + list_for_each(p, &subs->fmt_list) { + struct audioformat *fp; + fp = list_entry(p, struct audioformat, list); + if (!hw_check_valid_format(subs, params, fp)) + continue; + fbits |= (1ULL << fp->format); + } + + oldbits[0] = fmt->bits[0]; + oldbits[1] = fmt->bits[1]; + fmt->bits[0] &= (u32)fbits; + fmt->bits[1] &= (u32)(fbits >> 32); + if (!fmt->bits[0] && !fmt->bits[1]) { + hwc_debug(" --> get empty\n"); + return -EINVAL; + } + changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); + hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); + return changed; +} + +static int hw_rule_period_time(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_usb_substream *subs = rule->private; + struct audioformat *fp; + struct snd_interval *it; + unsigned char min_datainterval; + unsigned int pmin; + int changed; + + it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); + hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); + min_datainterval = 0xff; + list_for_each_entry(fp, &subs->fmt_list, list) { + if (!hw_check_valid_format(subs, params, fp)) + continue; + min_datainterval = min(min_datainterval, fp->datainterval); + } + if (min_datainterval == 0xff) { + hwc_debug(" --> get emtpy\n"); + it->empty = 1; + return -EINVAL; + } + pmin = 125 * (1 << min_datainterval); + changed = 0; + if (it->min < pmin) { + it->min = pmin; + it->openmin = 0; + changed = 1; + } + if (snd_interval_checkempty(it)) { + it->empty = 1; + return -EINVAL; + } + hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed); + return changed; +} + +/* + * If the device supports unusual bit rates, does the request meet these? + */ +static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, + struct snd_usb_substream *subs) +{ + struct audioformat *fp; + int count = 0, needs_knot = 0; + int err; + + list_for_each_entry(fp, &subs->fmt_list, list) { + if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) + return 0; + count += fp->nr_rates; + if (fp->rates & SNDRV_PCM_RATE_KNOT) + needs_knot = 1; + } + if (!needs_knot) + return 0; + + subs->rate_list.count = count; + subs->rate_list.list = kmalloc(sizeof(int) * count, GFP_KERNEL); + subs->rate_list.mask = 0; + count = 0; + list_for_each_entry(fp, &subs->fmt_list, list) { + int i; + for (i = 0; i < fp->nr_rates; i++) + subs->rate_list.list[count++] = fp->rate_table[i]; + } + err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + &subs->rate_list); + if (err < 0) + return err; + + return 0; +} + + +/* + * set up the runtime hardware information. + */ + +static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) +{ + struct list_head *p; + unsigned int pt, ptmin; + int param_period_time_if_needed; + int err; + + runtime->hw.formats = subs->formats; + + runtime->hw.rate_min = 0x7fffffff; + runtime->hw.rate_max = 0; + runtime->hw.channels_min = 256; + runtime->hw.channels_max = 0; + runtime->hw.rates = 0; + ptmin = UINT_MAX; + /* check min/max rates and channels */ + list_for_each(p, &subs->fmt_list) { + struct audioformat *fp; + fp = list_entry(p, struct audioformat, list); + runtime->hw.rates |= fp->rates; + if (runtime->hw.rate_min > fp->rate_min) + runtime->hw.rate_min = fp->rate_min; + if (runtime->hw.rate_max < fp->rate_max) + runtime->hw.rate_max = fp->rate_max; + if (runtime->hw.channels_min > fp->channels) + runtime->hw.channels_min = fp->channels; + if (runtime->hw.channels_max < fp->channels) + runtime->hw.channels_max = fp->channels; + if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { + /* FIXME: there might be more than one audio formats... */ + runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = + fp->frame_size; + } + pt = 125 * (1 << fp->datainterval); + ptmin = min(ptmin, pt); + } + + param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; + if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH) + /* full speed devices have fixed data packet interval */ + ptmin = 1000; + if (ptmin == 1000) + /* if period time doesn't go below 1 ms, no rules needed */ + param_period_time_if_needed = -1; + snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, + ptmin, UINT_MAX); + + if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + hw_rule_rate, subs, + SNDRV_PCM_HW_PARAM_FORMAT, + SNDRV_PCM_HW_PARAM_CHANNELS, + param_period_time_if_needed, + -1)) < 0) + return err; + if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_channels, subs, + SNDRV_PCM_HW_PARAM_FORMAT, + SNDRV_PCM_HW_PARAM_RATE, + param_period_time_if_needed, + -1)) < 0) + return err; + if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, + hw_rule_format, subs, + SNDRV_PCM_HW_PARAM_RATE, + SNDRV_PCM_HW_PARAM_CHANNELS, + param_period_time_if_needed, + -1)) < 0) + return err; + if (param_period_time_if_needed >= 0) { + err = snd_pcm_hw_rule_add(runtime, 0, + SNDRV_PCM_HW_PARAM_PERIOD_TIME, + hw_rule_period_time, subs, + SNDRV_PCM_HW_PARAM_FORMAT, + SNDRV_PCM_HW_PARAM_CHANNELS, + SNDRV_PCM_HW_PARAM_RATE, + -1); + if (err < 0) + return err; + } + if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0) + return err; + return 0; +} + +static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction) +{ + struct snd_usb_stream *as = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_usb_substream *subs = &as->substream[direction]; + + subs->interface = -1; + subs->format = 0; + runtime->hw = snd_usb_hardware; + runtime->private_data = subs; + subs->pcm_substream = substream; + return setup_hw_info(runtime, subs); +} + +static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) +{ + struct snd_usb_stream *as = snd_pcm_substream_chip(substream); + struct snd_usb_substream *subs = &as->substream[direction]; + + if (!as->chip->shutdown && subs->interface >= 0) { + usb_set_interface(subs->dev, subs->interface, 0); + subs->interface = -1; + } + subs->pcm_substream = NULL; + return 0; +} + +static int snd_usb_playback_open(struct snd_pcm_substream *substream) +{ + return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK); +} + +static int snd_usb_playback_close(struct snd_pcm_substream *substream) +{ + return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK); +} + +static int snd_usb_capture_open(struct snd_pcm_substream *substream) +{ + return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE); +} + +static int snd_usb_capture_close(struct snd_pcm_substream *substream) +{ + return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE); +} + +static struct snd_pcm_ops snd_usb_playback_ops = { + .open = snd_usb_playback_open, + .close = snd_usb_playback_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_usb_hw_params, + .hw_free = snd_usb_hw_free, + .prepare = snd_usb_pcm_prepare, + .trigger = snd_usb_substream_playback_trigger, + .pointer = snd_usb_pcm_pointer, + .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, +}; + +static struct snd_pcm_ops snd_usb_capture_ops = { + .open = snd_usb_capture_open, + .close = snd_usb_capture_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_usb_hw_params, + .hw_free = snd_usb_hw_free, + .prepare = snd_usb_pcm_prepare, + .trigger = snd_usb_substream_capture_trigger, + .pointer = snd_usb_pcm_pointer, + .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, +}; + +void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream) +{ + snd_pcm_set_ops(pcm, stream, + stream == SNDRV_PCM_STREAM_PLAYBACK ? + &snd_usb_playback_ops : &snd_usb_capture_ops); +} diff --git a/sound/usb/pcm.h b/sound/usb/pcm.h new file mode 100644 index 00000000000..85856016e05 --- /dev/null +++ b/sound/usb/pcm.h @@ -0,0 +1,14 @@ +#ifndef __USBAUDIO_PCM_H +#define __USBAUDIO_PCM_H + +void snd_usb_set_pcm_ops(struct snd_pcm *pcm, int stream); + +int snd_usb_init_pitch(struct usb_device *dev, int iface, + struct usb_host_interface *alts, + struct audioformat *fmt); + +int snd_usb_init_sample_rate(struct usb_device *dev, int iface, + struct usb_host_interface *alts, + struct audioformat *fmt, int rate); + +#endif /* __USBAUDIO_PCM_H */ diff --git a/sound/usb/proc.c b/sound/usb/proc.c new file mode 100644 index 00000000000..be3065ea1af --- /dev/null +++ b/sound/usb/proc.c @@ -0,0 +1,163 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/init.h> +#include <linux/usb.h> + +#include <sound/core.h> +#include <sound/info.h> +#include <sound/pcm.h> + +#include "usbaudio.h" +#include "helper.h" +#include "card.h" +#include "proc.h" + +/* convert our full speed USB rate into sampling rate in Hz */ +static inline unsigned get_full_speed_hz(unsigned int usb_rate) +{ + return (usb_rate * 125 + (1 << 12)) >> 13; +} + +/* convert our high speed USB rate into sampling rate in Hz */ +static inline unsigned get_high_speed_hz(unsigned int usb_rate) +{ + return (usb_rate * 125 + (1 << 9)) >> 10; +} + +/* + * common proc files to show the usb device info + */ +static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) +{ + struct snd_usb_audio *chip = entry->private_data; + if (!chip->shutdown) + snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum); +} + +static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) +{ + struct snd_usb_audio *chip = entry->private_data; + if (!chip->shutdown) + snd_iprintf(buffer, "%04x:%04x\n", + USB_ID_VENDOR(chip->usb_id), + USB_ID_PRODUCT(chip->usb_id)); +} + +void snd_usb_audio_create_proc(struct snd_usb_audio *chip) +{ + struct snd_info_entry *entry; + if (!snd_card_proc_new(chip->card, "usbbus", &entry)) + snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read); + if (!snd_card_proc_new(chip->card, "usbid", &entry)) + snd_info_set_text_ops(entry, chip, proc_audio_usbid_read); +} + +/* + * proc interface for list the supported pcm formats + */ +static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) +{ + struct list_head *p; + static char *sync_types[4] = { + "NONE", "ASYNC", "ADAPTIVE", "SYNC" + }; + + list_for_each(p, &subs->fmt_list) { + struct audioformat *fp; + fp = list_entry(p, struct audioformat, list); + snd_iprintf(buffer, " Interface %d\n", fp->iface); + snd_iprintf(buffer, " Altset %d\n", fp->altsetting); + snd_iprintf(buffer, " Format: %s\n", + snd_pcm_format_name(fp->format)); + snd_iprintf(buffer, " Channels: %d\n", fp->channels); + snd_iprintf(buffer, " Endpoint: %d %s (%s)\n", + fp->endpoint & USB_ENDPOINT_NUMBER_MASK, + fp->endpoint & USB_DIR_IN ? "IN" : "OUT", + sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]); + if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) { + snd_iprintf(buffer, " Rates: %d - %d (continuous)\n", + fp->rate_min, fp->rate_max); + } else { + unsigned int i; + snd_iprintf(buffer, " Rates: "); + for (i = 0; i < fp->nr_rates; i++) { + if (i > 0) + snd_iprintf(buffer, ", "); + snd_iprintf(buffer, "%d", fp->rate_table[i]); + } + snd_iprintf(buffer, "\n"); + } + if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) + snd_iprintf(buffer, " Data packet interval: %d us\n", + 125 * (1 << fp->datainterval)); + // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize); + // snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes); + } +} + +static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) +{ + if (subs->running) { + unsigned int i; + snd_iprintf(buffer, " Status: Running\n"); + snd_iprintf(buffer, " Interface = %d\n", subs->interface); + snd_iprintf(buffer, " Altset = %d\n", subs->format); + snd_iprintf(buffer, " URBs = %d [ ", subs->nurbs); + for (i = 0; i < subs->nurbs; i++) + snd_iprintf(buffer, "%d ", subs->dataurb[i].packets); + snd_iprintf(buffer, "]\n"); + snd_iprintf(buffer, " Packet Size = %d\n", subs->curpacksize); + snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n", + snd_usb_get_speed(subs->dev) == USB_SPEED_FULL + ? get_full_speed_hz(subs->freqm) + : get_high_speed_hz(subs->freqm), + subs->freqm >> 16, subs->freqm & 0xffff); + } else { + snd_iprintf(buffer, " Status: Stop\n"); + } +} + +static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) +{ + struct snd_usb_stream *stream = entry->private_data; + + snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name); + + if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) { + snd_iprintf(buffer, "\nPlayback:\n"); + proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); + proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); + } + if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) { + snd_iprintf(buffer, "\nCapture:\n"); + proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); + proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); + } +} + +void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream) +{ + struct snd_info_entry *entry; + char name[32]; + struct snd_card *card = stream->chip->card; + + sprintf(name, "stream%d", stream->pcm_index); + if (!snd_card_proc_new(card, name, &entry)) + snd_info_set_text_ops(entry, stream, proc_pcm_format_read); +} + diff --git a/sound/usb/proc.h b/sound/usb/proc.h new file mode 100644 index 00000000000..a45b765e4cf --- /dev/null +++ b/sound/usb/proc.h @@ -0,0 +1,8 @@ +#ifndef __USBAUDIO_PROC_H +#define __USBAUDIO_PROC_H + +void snd_usb_audio_create_proc(struct snd_usb_audio *chip); +void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream); + +#endif /* __USBAUDIO_PROC_H */ + diff --git a/sound/usb/usbquirks.h b/sound/usb/quirks-table.h index 2b426c1fd0e..2b426c1fd0e 100644 --- a/sound/usb/usbquirks.h +++ b/sound/usb/quirks-table.h diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c new file mode 100644 index 00000000000..4c16920844e --- /dev/null +++ b/sound/usb/quirks.c @@ -0,0 +1,592 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/init.h> +#include <linux/usb.h> +#include <linux/usb/audio.h> + +#include <sound/core.h> +#include <sound/info.h> +#include <sound/pcm.h> + +#include "usbaudio.h" +#include "card.h" +#include "usbmixer.h" +#include "midi.h" +#include "quirks.h" +#include "helper.h" +#include "endpoint.h" +#include "pcm.h" + +/* + * handle the quirks for the contained interfaces + */ +static int create_composite_quirk(struct snd_usb_audio *chip, + struct usb_interface *iface, + struct usb_driver *driver, + const struct snd_usb_audio_quirk *quirk) +{ + int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber; + int err; + + for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) { + iface = usb_ifnum_to_if(chip->dev, quirk->ifnum); + if (!iface) + continue; + if (quirk->ifnum != probed_ifnum && + usb_interface_claimed(iface)) + continue; + err = snd_usb_create_quirk(chip, iface, driver, quirk); + if (err < 0) + return err; + if (quirk->ifnum != probed_ifnum) + usb_driver_claim_interface(driver, iface, (void *)-1L); + } + return 0; +} + +static int ignore_interface_quirk(struct snd_usb_audio *chip, + struct usb_interface *iface, + struct usb_driver *driver, + const struct snd_usb_audio_quirk *quirk) +{ + return 0; +} + + +/* + * Allow alignment on audio sub-slot (channel samples) rather than + * on audio slots (audio frames) + */ +static int create_align_transfer_quirk(struct snd_usb_audio *chip, + struct usb_interface *iface, + struct usb_driver *driver, + const struct snd_usb_audio_quirk *quirk) +{ + chip->txfr_quirk = 1; + return 1; /* Continue with creating streams and mixer */ +} + +static int create_any_midi_quirk(struct snd_usb_audio *chip, + struct usb_interface *intf, + struct usb_driver *driver, + const struct snd_usb_audio_quirk *quirk) +{ + return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk); +} + +/* + * create a stream for an interface with proper descriptors + */ +static int create_standard_audio_quirk(struct snd_usb_audio *chip, + struct usb_interface *iface, + struct usb_driver *driver, + const struct snd_usb_audio_quirk *quirk) +{ + struct usb_host_interface *alts; + struct usb_interface_descriptor *altsd; + int err; + + alts = &iface->altsetting[0]; + altsd = get_iface_desc(alts); + err = snd_usb_parse_audio_endpoints(chip, altsd->bInterfaceNumber); + if (err < 0) { + snd_printk(KERN_ERR "cannot setup if %d: error %d\n", + altsd->bInterfaceNumber, err); + return err; + } + /* reset the current interface */ + usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0); + return 0; +} + +/* + * create a stream for an endpoint/altsetting without proper descriptors + */ +static int create_fixed_stream_quirk(struct snd_usb_audio *chip, + struct usb_interface *iface, + struct usb_driver *driver, + const struct snd_usb_audio_quirk *quirk) +{ + struct audioformat *fp; + struct usb_host_interface *alts; + int stream, err; + unsigned *rate_table = NULL; + + fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL); + if (! fp) { + snd_printk(KERN_ERR "cannot memdup\n"); + return -ENOMEM; + } + if (fp->nr_rates > 0) { + rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL); + if (!rate_table) { + kfree(fp); + return -ENOMEM; + } + memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates); + fp->rate_table = rate_table; + } + + stream = (fp->endpoint & USB_DIR_IN) + ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; + err = snd_usb_add_audio_endpoint(chip, stream, fp); + if (err < 0) { + kfree(fp); + kfree(rate_table); + return err; + } + if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber || + fp->altset_idx >= iface->num_altsetting) { + kfree(fp); + kfree(rate_table); + return -EINVAL; + } + alts = &iface->altsetting[fp->altset_idx]; + fp->datainterval = snd_usb_parse_datainterval(chip, alts); + fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); + usb_set_interface(chip->dev, fp->iface, 0); + snd_usb_init_pitch(chip->dev, fp->iface, alts, fp); + snd_usb_init_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max); + return 0; +} + +/* + * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface. + * The only way to detect the sample rate is by looking at wMaxPacketSize. + */ +static int create_uaxx_quirk(struct snd_usb_audio *chip, + struct usb_interface *iface, + struct usb_driver *driver, + const struct snd_usb_audio_quirk *quirk) +{ + static const struct audioformat ua_format = { + .format = SNDRV_PCM_FORMAT_S24_3LE, + .channels = 2, + .fmt_type = UAC_FORMAT_TYPE_I, + .altsetting = 1, + .altset_idx = 1, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + }; + struct usb_host_interface *alts; + struct usb_interface_descriptor *altsd; + struct audioformat *fp; + int stream, err; + + /* both PCM and MIDI interfaces have 2 or more altsettings */ + if (iface->num_altsetting < 2) + return -ENXIO; + alts = &iface->altsetting[1]; + altsd = get_iface_desc(alts); + + if (altsd->bNumEndpoints == 2) { + static const struct snd_usb_midi_endpoint_info ua700_ep = { + .out_cables = 0x0003, + .in_cables = 0x0003 + }; + static const struct snd_usb_audio_quirk ua700_quirk = { + .type = QUIRK_MIDI_FIXED_ENDPOINT, + .data = &ua700_ep + }; + static const struct snd_usb_midi_endpoint_info uaxx_ep = { + .out_cables = 0x0001, + .in_cables = 0x0001 + }; + static const struct snd_usb_audio_quirk uaxx_quirk = { + .type = QUIRK_MIDI_FIXED_ENDPOINT, + .data = &uaxx_ep + }; + const struct snd_usb_audio_quirk *quirk = + chip->usb_id == USB_ID(0x0582, 0x002b) + ? &ua700_quirk : &uaxx_quirk; + return snd_usbmidi_create(chip->card, iface, + &chip->midi_list, quirk); + } + + if (altsd->bNumEndpoints != 1) + return -ENXIO; + + fp = kmalloc(sizeof(*fp), GFP_KERNEL); + if (!fp) + return -ENOMEM; + memcpy(fp, &ua_format, sizeof(*fp)); + + fp->iface = altsd->bInterfaceNumber; + fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; + fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; + fp->datainterval = 0; + fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); + + switch (fp->maxpacksize) { + case 0x120: + fp->rate_max = fp->rate_min = 44100; + break; + case 0x138: + case 0x140: + fp->rate_max = fp->rate_min = 48000; + break; + case 0x258: + case 0x260: + fp->rate_max = fp->rate_min = 96000; + break; + default: + snd_printk(KERN_ERR "unknown sample rate\n"); + kfree(fp); + return -ENXIO; + } + + stream = (fp->endpoint & USB_DIR_IN) + ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; + err = snd_usb_add_audio_endpoint(chip, stream, fp); + if (err < 0) { + kfree(fp); + return err; + } + usb_set_interface(chip->dev, fp->iface, 0); + return 0; +} + +/* + * audio-interface quirks + * + * returns zero if no standard audio/MIDI parsing is needed. + * returns a postive value if standard audio/midi interfaces are parsed + * after this. + * returns a negative value at error. + */ +int snd_usb_create_quirk(struct snd_usb_audio *chip, + struct usb_interface *iface, + struct usb_driver *driver, + const struct snd_usb_audio_quirk *quirk) +{ + typedef int (*quirk_func_t)(struct snd_usb_audio *, + struct usb_interface *, + struct usb_driver *, + const struct snd_usb_audio_quirk *); + static const quirk_func_t quirk_funcs[] = { + [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk, + [QUIRK_COMPOSITE] = create_composite_quirk, + [QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk, + [QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk, + [QUIRK_MIDI_YAMAHA] = create_any_midi_quirk, + [QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk, + [QUIRK_MIDI_NOVATION] = create_any_midi_quirk, + [QUIRK_MIDI_FASTLANE] = create_any_midi_quirk, + [QUIRK_MIDI_EMAGIC] = create_any_midi_quirk, + [QUIRK_MIDI_CME] = create_any_midi_quirk, + [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk, + [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk, + [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk, + [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk + }; + + if (quirk->type < QUIRK_TYPE_COUNT) { + return quirk_funcs[quirk->type](chip, iface, driver, quirk); + } else { + snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type); + return -ENXIO; + } +} + +/* + * boot quirks + */ + +#define EXTIGY_FIRMWARE_SIZE_OLD 794 +#define EXTIGY_FIRMWARE_SIZE_NEW 483 + +static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf) +{ + struct usb_host_config *config = dev->actconfig; + int err; + + if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD || + le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) { + snd_printdd("sending Extigy boot sequence...\n"); + /* Send message to force it to reconnect with full interface. */ + err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0), + 0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000); + if (err < 0) snd_printdd("error sending boot message: %d\n", err); + err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, + &dev->descriptor, sizeof(dev->descriptor)); + config = dev->actconfig; + if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err); + err = usb_reset_configuration(dev); + if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err); + snd_printdd("extigy_boot: new boot length = %d\n", + le16_to_cpu(get_cfg_desc(config)->wTotalLength)); + return -ENODEV; /* quit this anyway */ + } + return 0; +} + +static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev) +{ + u8 buf = 1; + + snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER, + 0, 0, &buf, 1, 1000); + if (buf == 0) { + snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER, + 1, 2000, NULL, 0, 1000); + return -ENODEV; + } + return 0; +} + +/* + * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely + * documented in the device's data sheet. + */ +static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value) +{ + u8 buf[4]; + buf[0] = 0x20; + buf[1] = value & 0xff; + buf[2] = (value >> 8) & 0xff; + buf[3] = reg; + return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION, + USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT, + 0, 0, &buf, 4, 1000); +} + +static int snd_usb_cm106_boot_quirk(struct usb_device *dev) +{ + /* + * Enable line-out driver mode, set headphone source to front + * channels, enable stereo mic. + */ + return snd_usb_cm106_write_int_reg(dev, 2, 0x8004); +} + +/* + * C-Media CM6206 is based on CM106 with two additional + * registers that are not documented in the data sheet. + * Values here are chosen based on sniffing USB traffic + * under Windows. + */ +static int snd_usb_cm6206_boot_quirk(struct usb_device *dev) +{ + int err, reg; + int val[] = {0x200c, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000}; + + for (reg = 0; reg < ARRAY_SIZE(val); reg++) { + err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]); + if (err < 0) + return err; + } + + return err; +} + +/* + * This call will put the synth in "USB send" mode, i.e it will send MIDI + * messages through USB (this is disabled at startup). The synth will + * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB + * sign on its LCD. Values here are chosen based on sniffing USB traffic + * under Windows. + */ +static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev) +{ + int err, actual_length; + + /* "midi send" enable */ + static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 }; + + void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL); + if (!buf) + return -ENOMEM; + err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf, + ARRAY_SIZE(seq), &actual_length, 1000); + kfree(buf); + if (err < 0) + return err; + + return 0; +} + +/* + * Setup quirks + */ +#define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */ +#define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */ +#define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */ +#define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */ +#define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */ +#define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */ +#define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */ +#define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */ +#define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */ +#define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */ + +static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip, + int iface, + int altno) +{ + /* Reset ALL ifaces to 0 altsetting. + * Call it for every possible altsetting of every interface. + */ + usb_set_interface(chip->dev, iface, 0); + + if (chip->setup & AUDIOPHILE_SET) { + if ((chip->setup & AUDIOPHILE_SET_DTS) + && altno != 6) + return 1; /* skip this altsetting */ + if ((chip->setup & AUDIOPHILE_SET_96K) + && altno != 1) + return 1; /* skip this altsetting */ + if ((chip->setup & AUDIOPHILE_SET_MASK) == + AUDIOPHILE_SET_24B_48K_DI && altno != 2) + return 1; /* skip this altsetting */ + if ((chip->setup & AUDIOPHILE_SET_MASK) == + AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3) + return 1; /* skip this altsetting */ + if ((chip->setup & AUDIOPHILE_SET_MASK) == + AUDIOPHILE_SET_16B_48K_DI && altno != 4) + return 1; /* skip this altsetting */ + if ((chip->setup & AUDIOPHILE_SET_MASK) == + AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5) + return 1; /* skip this altsetting */ + } + + return 0; /* keep this altsetting */ +} + +int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip, + int iface, + int altno) +{ + /* audiophile usb: skip altsets incompatible with device_setup */ + if (chip->usb_id == USB_ID(0x0763, 0x2003)) + return audiophile_skip_setting_quirk(chip, iface, altno); + + return 0; +} + +int snd_usb_apply_boot_quirk(struct usb_device *dev, + struct usb_interface *intf, + const struct snd_usb_audio_quirk *quirk) +{ + u32 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), + le16_to_cpu(dev->descriptor.idProduct)); + + /* SB Extigy needs special boot-up sequence */ + /* if more models come, this will go to the quirk list. */ + if (id == USB_ID(0x041e, 0x3000)) + return snd_usb_extigy_boot_quirk(dev, intf); + + /* SB Audigy 2 NX needs its own boot-up magic, too */ + if (id == USB_ID(0x041e, 0x3020)) + return snd_usb_audigy2nx_boot_quirk(dev); + + /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */ + if (id == USB_ID(0x10f5, 0x0200)) + return snd_usb_cm106_boot_quirk(dev); + + /* C-Media CM6206 / CM106-Like Sound Device */ + if (id == USB_ID(0x0d8c, 0x0102)) + return snd_usb_cm6206_boot_quirk(dev); + + /* Access Music VirusTI Desktop */ + if (id == USB_ID(0x133e, 0x0815)) + return snd_usb_accessmusic_boot_quirk(dev); + + return 0; +} + +/* + * check if the device uses big-endian samples + */ +int snd_usb_is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp) +{ + switch (chip->usb_id) { + case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */ + if (fp->endpoint & USB_DIR_IN) + return 1; + break; + case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ + if (chip->setup == 0x00 || + fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3) + return 1; + } + return 0; +} + +/* + * For E-Mu 0404USB/0202USB/TrackerPre sample rate should be set for device, + * not for interface. + */ + +enum { + EMU_QUIRK_SR_44100HZ = 0, + EMU_QUIRK_SR_48000HZ, + EMU_QUIRK_SR_88200HZ, + EMU_QUIRK_SR_96000HZ, + EMU_QUIRK_SR_176400HZ, + EMU_QUIRK_SR_192000HZ +}; + +static void set_format_emu_quirk(struct snd_usb_substream *subs, + struct audioformat *fmt) +{ + unsigned char emu_samplerate_id = 0; + + /* When capture is active + * sample rate shouldn't be changed + * by playback substream + */ + if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) { + if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1) + return; + } + + switch (fmt->rate_min) { + case 48000: + emu_samplerate_id = EMU_QUIRK_SR_48000HZ; + break; + case 88200: + emu_samplerate_id = EMU_QUIRK_SR_88200HZ; + break; + case 96000: + emu_samplerate_id = EMU_QUIRK_SR_96000HZ; + break; + case 176400: + emu_samplerate_id = EMU_QUIRK_SR_176400HZ; + break; + case 192000: + emu_samplerate_id = EMU_QUIRK_SR_192000HZ; + break; + default: + emu_samplerate_id = EMU_QUIRK_SR_44100HZ; + break; + } + snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id); +} + +void snd_usb_set_format_quirk(struct snd_usb_substream *subs, + struct audioformat *fmt) +{ + switch (subs->stream->chip->usb_id) { + case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */ + case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */ + case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */ + set_format_emu_quirk(subs, fmt); + break; + } +} + diff --git a/sound/usb/quirks.h b/sound/usb/quirks.h new file mode 100644 index 00000000000..03e5e94098c --- /dev/null +++ b/sound/usb/quirks.h @@ -0,0 +1,23 @@ +#ifndef __USBAUDIO_QUIRKS_H +#define __USBAUDIO_QUIRKS_H + +int snd_usb_create_quirk(struct snd_usb_audio *chip, + struct usb_interface *iface, + struct usb_driver *driver, + const struct snd_usb_audio_quirk *quirk); + +int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip, + int iface, + int altno); + +int snd_usb_apply_boot_quirk(struct usb_device *dev, + struct usb_interface *intf, + const struct snd_usb_audio_quirk *quirk); + +void snd_usb_set_format_quirk(struct snd_usb_substream *subs, + struct audioformat *fmt); + +int snd_usb_is_big_endian_format(struct snd_usb_audio *chip, + struct audioformat *fp); + +#endif /* __USBAUDIO_QUIRKS_H */ diff --git a/sound/usb/urb.c b/sound/usb/urb.c new file mode 100644 index 00000000000..e9c339f7586 --- /dev/null +++ b/sound/usb/urb.c @@ -0,0 +1,989 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/init.h> +#include <linux/usb.h> +#include <linux/usb/audio.h> + +#include <sound/core.h> +#include <sound/pcm.h> + +#include "usbaudio.h" +#include "helper.h" +#include "card.h" +#include "urb.h" +#include "pcm.h" + +/* + * convert a sampling rate into our full speed format (fs/1000 in Q16.16) + * this will overflow at approx 524 kHz + */ +static inline unsigned get_usb_full_speed_rate(unsigned int rate) +{ + return ((rate << 13) + 62) / 125; +} + +/* + * convert a sampling rate into USB high speed format (fs/8000 in Q16.16) + * this will overflow at approx 4 MHz + */ +static inline unsigned get_usb_high_speed_rate(unsigned int rate) +{ + return ((rate << 10) + 62) / 125; +} + +/* + * unlink active urbs. + */ +static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep) +{ + struct snd_usb_audio *chip = subs->stream->chip; + unsigned int i; + int async; + + subs->running = 0; + + if (!force && subs->stream->chip->shutdown) /* to be sure... */ + return -EBADFD; + + async = !can_sleep && chip->async_unlink; + + if (!async && in_interrupt()) + return 0; + + for (i = 0; i < subs->nurbs; i++) { + if (test_bit(i, &subs->active_mask)) { + if (!test_and_set_bit(i, &subs->unlink_mask)) { + struct urb *u = subs->dataurb[i].urb; + if (async) + usb_unlink_urb(u); + else + usb_kill_urb(u); + } + } + } + if (subs->syncpipe) { + for (i = 0; i < SYNC_URBS; i++) { + if (test_bit(i+16, &subs->active_mask)) { + if (!test_and_set_bit(i+16, &subs->unlink_mask)) { + struct urb *u = subs->syncurb[i].urb; + if (async) + usb_unlink_urb(u); + else + usb_kill_urb(u); + } + } + } + } + return 0; +} + + +/* + * release a urb data + */ +static void release_urb_ctx(struct snd_urb_ctx *u) +{ + if (u->urb) { + if (u->buffer_size) + usb_buffer_free(u->subs->dev, u->buffer_size, + u->urb->transfer_buffer, + u->urb->transfer_dma); + usb_free_urb(u->urb); + u->urb = NULL; + } +} + +/* + * wait until all urbs are processed. + */ +static int wait_clear_urbs(struct snd_usb_substream *subs) +{ + unsigned long end_time = jiffies + msecs_to_jiffies(1000); + unsigned int i; + int alive; + + do { + alive = 0; + for (i = 0; i < subs->nurbs; i++) { + if (test_bit(i, &subs->active_mask)) + alive++; + } + if (subs->syncpipe) { + for (i = 0; i < SYNC_URBS; i++) { + if (test_bit(i + 16, &subs->active_mask)) + alive++; + } + } + if (! alive) + break; + schedule_timeout_uninterruptible(1); + } while (time_before(jiffies, end_time)); + if (alive) + snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive); + return 0; +} + +/* + * release a substream + */ +void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force) +{ + int i; + + /* stop urbs (to be sure) */ + deactivate_urbs(subs, force, 1); + wait_clear_urbs(subs); + + for (i = 0; i < MAX_URBS; i++) + release_urb_ctx(&subs->dataurb[i]); + for (i = 0; i < SYNC_URBS; i++) + release_urb_ctx(&subs->syncurb[i]); + usb_buffer_free(subs->dev, SYNC_URBS * 4, + subs->syncbuf, subs->sync_dma); + subs->syncbuf = NULL; + subs->nurbs = 0; +} + +/* + * complete callback from data urb + */ +static void snd_complete_urb(struct urb *urb) +{ + struct snd_urb_ctx *ctx = urb->context; + struct snd_usb_substream *subs = ctx->subs; + struct snd_pcm_substream *substream = ctx->subs->pcm_substream; + int err = 0; + + if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) || + !subs->running || /* can be stopped during retire callback */ + (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 || + (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { + clear_bit(ctx->index, &subs->active_mask); + if (err < 0) { + snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err); + snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); + } + } +} + + +/* + * complete callback from sync urb + */ +static void snd_complete_sync_urb(struct urb *urb) +{ + struct snd_urb_ctx *ctx = urb->context; + struct snd_usb_substream *subs = ctx->subs; + struct snd_pcm_substream *substream = ctx->subs->pcm_substream; + int err = 0; + + if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) || + !subs->running || /* can be stopped during retire callback */ + (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 || + (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { + clear_bit(ctx->index + 16, &subs->active_mask); + if (err < 0) { + snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err); + snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); + } + } +} + + +/* + * initialize a substream for plaback/capture + */ +int snd_usb_init_substream_urbs(struct snd_usb_substream *subs, + unsigned int period_bytes, + unsigned int rate, + unsigned int frame_bits) +{ + unsigned int maxsize, i; + int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; + unsigned int urb_packs, total_packs, packs_per_ms; + struct snd_usb_audio *chip = subs->stream->chip; + + /* calculate the frequency in 16.16 format */ + if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) + subs->freqn = get_usb_full_speed_rate(rate); + else + subs->freqn = get_usb_high_speed_rate(rate); + subs->freqm = subs->freqn; + /* calculate max. frequency */ + if (subs->maxpacksize) { + /* whatever fits into a max. size packet */ + maxsize = subs->maxpacksize; + subs->freqmax = (maxsize / (frame_bits >> 3)) + << (16 - subs->datainterval); + } else { + /* no max. packet size: just take 25% higher than nominal */ + subs->freqmax = subs->freqn + (subs->freqn >> 2); + maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3)) + >> (16 - subs->datainterval); + } + subs->phase = 0; + + if (subs->fill_max) + subs->curpacksize = subs->maxpacksize; + else + subs->curpacksize = maxsize; + + if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) + packs_per_ms = 8 >> subs->datainterval; + else + packs_per_ms = 1; + + if (is_playback) { + urb_packs = max(chip->nrpacks, 1); + urb_packs = min(urb_packs, (unsigned int)MAX_PACKS); + } else + urb_packs = 1; + urb_packs *= packs_per_ms; + if (subs->syncpipe) + urb_packs = min(urb_packs, 1U << subs->syncinterval); + + /* decide how many packets to be used */ + if (is_playback) { + unsigned int minsize, maxpacks; + /* determine how small a packet can be */ + minsize = (subs->freqn >> (16 - subs->datainterval)) + * (frame_bits >> 3); + /* with sync from device, assume it can be 12% lower */ + if (subs->syncpipe) + minsize -= minsize >> 3; + minsize = max(minsize, 1u); + total_packs = (period_bytes + minsize - 1) / minsize; + /* we need at least two URBs for queueing */ + if (total_packs < 2) { + total_packs = 2; + } else { + /* and we don't want too long a queue either */ + maxpacks = max(MAX_QUEUE * packs_per_ms, urb_packs * 2); + total_packs = min(total_packs, maxpacks); + } + } else { + while (urb_packs > 1 && urb_packs * maxsize >= period_bytes) + urb_packs >>= 1; + total_packs = MAX_URBS * urb_packs; + } + subs->nurbs = (total_packs + urb_packs - 1) / urb_packs; + if (subs->nurbs > MAX_URBS) { + /* too much... */ + subs->nurbs = MAX_URBS; + total_packs = MAX_URBS * urb_packs; + } else if (subs->nurbs < 2) { + /* too little - we need at least two packets + * to ensure contiguous playback/capture + */ + subs->nurbs = 2; + } + + /* allocate and initialize data urbs */ + for (i = 0; i < subs->nurbs; i++) { + struct snd_urb_ctx *u = &subs->dataurb[i]; + u->index = i; + u->subs = subs; + u->packets = (i + 1) * total_packs / subs->nurbs + - i * total_packs / subs->nurbs; + u->buffer_size = maxsize * u->packets; + if (subs->fmt_type == UAC_FORMAT_TYPE_II) + u->packets++; /* for transfer delimiter */ + u->urb = usb_alloc_urb(u->packets, GFP_KERNEL); + if (!u->urb) + goto out_of_memory; + u->urb->transfer_buffer = + usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL, + &u->urb->transfer_dma); + if (!u->urb->transfer_buffer) + goto out_of_memory; + u->urb->pipe = subs->datapipe; + u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; + u->urb->interval = 1 << subs->datainterval; + u->urb->context = u; + u->urb->complete = snd_complete_urb; + } + + if (subs->syncpipe) { + /* allocate and initialize sync urbs */ + subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4, + GFP_KERNEL, &subs->sync_dma); + if (!subs->syncbuf) + goto out_of_memory; + for (i = 0; i < SYNC_URBS; i++) { + struct snd_urb_ctx *u = &subs->syncurb[i]; + u->index = i; + u->subs = subs; + u->packets = 1; + u->urb = usb_alloc_urb(1, GFP_KERNEL); + if (!u->urb) + goto out_of_memory; + u->urb->transfer_buffer = subs->syncbuf + i * 4; + u->urb->transfer_dma = subs->sync_dma + i * 4; + u->urb->transfer_buffer_length = 4; + u->urb->pipe = subs->syncpipe; + u->urb->transfer_flags = URB_ISO_ASAP | + URB_NO_TRANSFER_DMA_MAP; + u->urb->number_of_packets = 1; + u->urb->interval = 1 << subs->syncinterval; + u->urb->context = u; + u->urb->complete = snd_complete_sync_urb; + } + } + return 0; + +out_of_memory: + snd_usb_release_substream_urbs(subs, 0); + return -ENOMEM; +} + +/* + * prepare urb for full speed capture sync pipe + * + * fill the length and offset of each urb descriptor. + * the fixed 10.14 frequency is passed through the pipe. + */ +static int prepare_capture_sync_urb(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + unsigned char *cp = urb->transfer_buffer; + struct snd_urb_ctx *ctx = urb->context; + + urb->dev = ctx->subs->dev; /* we need to set this at each time */ + urb->iso_frame_desc[0].length = 3; + urb->iso_frame_desc[0].offset = 0; + cp[0] = subs->freqn >> 2; + cp[1] = subs->freqn >> 10; + cp[2] = subs->freqn >> 18; + return 0; +} + +/* + * prepare urb for high speed capture sync pipe + * + * fill the length and offset of each urb descriptor. + * the fixed 12.13 frequency is passed as 16.16 through the pipe. + */ +static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + unsigned char *cp = urb->transfer_buffer; + struct snd_urb_ctx *ctx = urb->context; + + urb->dev = ctx->subs->dev; /* we need to set this at each time */ + urb->iso_frame_desc[0].length = 4; + urb->iso_frame_desc[0].offset = 0; + cp[0] = subs->freqn; + cp[1] = subs->freqn >> 8; + cp[2] = subs->freqn >> 16; + cp[3] = subs->freqn >> 24; + return 0; +} + +/* + * process after capture sync complete + * - nothing to do + */ +static int retire_capture_sync_urb(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + return 0; +} + +/* + * prepare urb for capture data pipe + * + * fill the offset and length of each descriptor. + * + * we use a temporary buffer to write the captured data. + * since the length of written data is determined by host, we cannot + * write onto the pcm buffer directly... the data is thus copied + * later at complete callback to the global buffer. + */ +static int prepare_capture_urb(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + int i, offs; + struct snd_urb_ctx *ctx = urb->context; + + offs = 0; + urb->dev = ctx->subs->dev; /* we need to set this at each time */ + for (i = 0; i < ctx->packets; i++) { + urb->iso_frame_desc[i].offset = offs; + urb->iso_frame_desc[i].length = subs->curpacksize; + offs += subs->curpacksize; + } + urb->transfer_buffer_length = offs; + urb->number_of_packets = ctx->packets; + return 0; +} + +/* + * process after capture complete + * + * copy the data from each desctiptor to the pcm buffer, and + * update the current position. + */ +static int retire_capture_urb(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + unsigned long flags; + unsigned char *cp; + int i; + unsigned int stride, frames, bytes, oldptr; + int period_elapsed = 0; + + stride = runtime->frame_bits >> 3; + + for (i = 0; i < urb->number_of_packets; i++) { + cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; + if (urb->iso_frame_desc[i].status) { + snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status); + // continue; + } + bytes = urb->iso_frame_desc[i].actual_length; + frames = bytes / stride; + if (!subs->txfr_quirk) + bytes = frames * stride; + if (bytes % (runtime->sample_bits >> 3) != 0) { +#ifdef CONFIG_SND_DEBUG_VERBOSE + int oldbytes = bytes; +#endif + bytes = frames * stride; + snd_printdd(KERN_ERR "Corrected urb data len. %d->%d\n", + oldbytes, bytes); + } + /* update the current pointer */ + spin_lock_irqsave(&subs->lock, flags); + oldptr = subs->hwptr_done; + subs->hwptr_done += bytes; + if (subs->hwptr_done >= runtime->buffer_size * stride) + subs->hwptr_done -= runtime->buffer_size * stride; + frames = (bytes + (oldptr % stride)) / stride; + subs->transfer_done += frames; + if (subs->transfer_done >= runtime->period_size) { + subs->transfer_done -= runtime->period_size; + period_elapsed = 1; + } + spin_unlock_irqrestore(&subs->lock, flags); + /* copy a data chunk */ + if (oldptr + bytes > runtime->buffer_size * stride) { + unsigned int bytes1 = + runtime->buffer_size * stride - oldptr; + memcpy(runtime->dma_area + oldptr, cp, bytes1); + memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); + } else { + memcpy(runtime->dma_area + oldptr, cp, bytes); + } + } + if (period_elapsed) + snd_pcm_period_elapsed(subs->pcm_substream); + return 0; +} + +/* + * Process after capture complete when paused. Nothing to do. + */ +static int retire_paused_capture_urb(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + return 0; +} + + +/* + * prepare urb for full speed playback sync pipe + * + * set up the offset and length to receive the current frequency. + */ + +static int prepare_playback_sync_urb(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + struct snd_urb_ctx *ctx = urb->context; + + urb->dev = ctx->subs->dev; /* we need to set this at each time */ + urb->iso_frame_desc[0].length = 3; + urb->iso_frame_desc[0].offset = 0; + return 0; +} + +/* + * prepare urb for high speed playback sync pipe + * + * set up the offset and length to receive the current frequency. + */ + +static int prepare_playback_sync_urb_hs(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + struct snd_urb_ctx *ctx = urb->context; + + urb->dev = ctx->subs->dev; /* we need to set this at each time */ + urb->iso_frame_desc[0].length = 4; + urb->iso_frame_desc[0].offset = 0; + return 0; +} + +/* + * process after full speed playback sync complete + * + * retrieve the current 10.14 frequency from pipe, and set it. + * the value is referred in prepare_playback_urb(). + */ +static int retire_playback_sync_urb(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + unsigned int f; + unsigned long flags; + + if (urb->iso_frame_desc[0].status == 0 && + urb->iso_frame_desc[0].actual_length == 3) { + f = combine_triple((u8*)urb->transfer_buffer) << 2; + if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { + spin_lock_irqsave(&subs->lock, flags); + subs->freqm = f; + spin_unlock_irqrestore(&subs->lock, flags); + } + } + + return 0; +} + +/* + * process after high speed playback sync complete + * + * retrieve the current 12.13 frequency from pipe, and set it. + * the value is referred in prepare_playback_urb(). + */ +static int retire_playback_sync_urb_hs(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + unsigned int f; + unsigned long flags; + + if (urb->iso_frame_desc[0].status == 0 && + urb->iso_frame_desc[0].actual_length == 4) { + f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff; + if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { + spin_lock_irqsave(&subs->lock, flags); + subs->freqm = f; + spin_unlock_irqrestore(&subs->lock, flags); + } + } + + return 0; +} + +/* + * process after E-Mu 0202/0404/Tracker Pre high speed playback sync complete + * + * These devices return the number of samples per packet instead of the number + * of samples per microframe. + */ +static int retire_playback_sync_urb_hs_emu(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + unsigned int f; + unsigned long flags; + + if (urb->iso_frame_desc[0].status == 0 && + urb->iso_frame_desc[0].actual_length == 4) { + f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff; + f >>= subs->datainterval; + if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { + spin_lock_irqsave(&subs->lock, flags); + subs->freqm = f; + spin_unlock_irqrestore(&subs->lock, flags); + } + } + + return 0; +} + +/* determine the number of frames in the next packet */ +static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs) +{ + if (subs->fill_max) + return subs->maxframesize; + else { + subs->phase = (subs->phase & 0xffff) + + (subs->freqm << subs->datainterval); + return min(subs->phase >> 16, subs->maxframesize); + } +} + +/* + * Prepare urb for streaming before playback starts or when paused. + * + * We don't have any data, so we send silence. + */ +static int prepare_nodata_playback_urb(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + unsigned int i, offs, counts; + struct snd_urb_ctx *ctx = urb->context; + int stride = runtime->frame_bits >> 3; + + offs = 0; + urb->dev = ctx->subs->dev; + for (i = 0; i < ctx->packets; ++i) { + counts = snd_usb_audio_next_packet_size(subs); + urb->iso_frame_desc[i].offset = offs * stride; + urb->iso_frame_desc[i].length = counts * stride; + offs += counts; + } + urb->number_of_packets = ctx->packets; + urb->transfer_buffer_length = offs * stride; + memset(urb->transfer_buffer, + subs->cur_audiofmt->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0, + offs * stride); + return 0; +} + +/* + * prepare urb for playback data pipe + * + * Since a URB can handle only a single linear buffer, we must use double + * buffering when the data to be transferred overflows the buffer boundary. + * To avoid inconsistencies when updating hwptr_done, we use double buffering + * for all URBs. + */ +static int prepare_playback_urb(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + int i, stride; + unsigned int counts, frames, bytes; + unsigned long flags; + int period_elapsed = 0; + struct snd_urb_ctx *ctx = urb->context; + + stride = runtime->frame_bits >> 3; + + frames = 0; + urb->dev = ctx->subs->dev; /* we need to set this at each time */ + urb->number_of_packets = 0; + spin_lock_irqsave(&subs->lock, flags); + for (i = 0; i < ctx->packets; i++) { + counts = snd_usb_audio_next_packet_size(subs); + /* set up descriptor */ + urb->iso_frame_desc[i].offset = frames * stride; + urb->iso_frame_desc[i].length = counts * stride; + frames += counts; + urb->number_of_packets++; + subs->transfer_done += counts; + if (subs->transfer_done >= runtime->period_size) { + subs->transfer_done -= runtime->period_size; + period_elapsed = 1; + if (subs->fmt_type == UAC_FORMAT_TYPE_II) { + if (subs->transfer_done > 0) { + /* FIXME: fill-max mode is not + * supported yet */ + frames -= subs->transfer_done; + counts -= subs->transfer_done; + urb->iso_frame_desc[i].length = + counts * stride; + subs->transfer_done = 0; + } + i++; + if (i < ctx->packets) { + /* add a transfer delimiter */ + urb->iso_frame_desc[i].offset = + frames * stride; + urb->iso_frame_desc[i].length = 0; + urb->number_of_packets++; + } + break; + } + } + if (period_elapsed) /* finish at the period boundary */ + break; + } + bytes = frames * stride; + if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { + /* err, the transferred area goes over buffer boundary. */ + unsigned int bytes1 = + runtime->buffer_size * stride - subs->hwptr_done; + memcpy(urb->transfer_buffer, + runtime->dma_area + subs->hwptr_done, bytes1); + memcpy(urb->transfer_buffer + bytes1, + runtime->dma_area, bytes - bytes1); + } else { + memcpy(urb->transfer_buffer, + runtime->dma_area + subs->hwptr_done, bytes); + } + subs->hwptr_done += bytes; + if (subs->hwptr_done >= runtime->buffer_size * stride) + subs->hwptr_done -= runtime->buffer_size * stride; + runtime->delay += frames; + spin_unlock_irqrestore(&subs->lock, flags); + urb->transfer_buffer_length = bytes; + if (period_elapsed) + snd_pcm_period_elapsed(subs->pcm_substream); + return 0; +} + +/* + * process after playback data complete + * - decrease the delay count again + */ +static int retire_playback_urb(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime, + struct urb *urb) +{ + unsigned long flags; + int stride = runtime->frame_bits >> 3; + int processed = urb->transfer_buffer_length / stride; + + spin_lock_irqsave(&subs->lock, flags); + if (processed > runtime->delay) + runtime->delay = 0; + else + runtime->delay -= processed; + spin_unlock_irqrestore(&subs->lock, flags); + return 0; +} + +static const char *usb_error_string(int err) +{ + switch (err) { + case -ENODEV: + return "no device"; + case -ENOENT: + return "endpoint not enabled"; + case -EPIPE: + return "endpoint stalled"; + case -ENOSPC: + return "not enough bandwidth"; + case -ESHUTDOWN: + return "device disabled"; + case -EHOSTUNREACH: + return "device suspended"; + case -EINVAL: + case -EAGAIN: + case -EFBIG: + case -EMSGSIZE: + return "internal error"; + default: + return "unknown error"; + } +} + +/* + * set up and start data/sync urbs + */ +static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime) +{ + unsigned int i; + int err; + + if (subs->stream->chip->shutdown) + return -EBADFD; + + for (i = 0; i < subs->nurbs; i++) { + if (snd_BUG_ON(!subs->dataurb[i].urb)) + return -EINVAL; + if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) { + snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i); + goto __error; + } + } + if (subs->syncpipe) { + for (i = 0; i < SYNC_URBS; i++) { + if (snd_BUG_ON(!subs->syncurb[i].urb)) + return -EINVAL; + if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) { + snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i); + goto __error; + } + } + } + + subs->active_mask = 0; + subs->unlink_mask = 0; + subs->running = 1; + for (i = 0; i < subs->nurbs; i++) { + err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC); + if (err < 0) { + snd_printk(KERN_ERR "cannot submit datapipe " + "for urb %d, error %d: %s\n", + i, err, usb_error_string(err)); + goto __error; + } + set_bit(i, &subs->active_mask); + } + if (subs->syncpipe) { + for (i = 0; i < SYNC_URBS; i++) { + err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC); + if (err < 0) { + snd_printk(KERN_ERR "cannot submit syncpipe " + "for urb %d, error %d: %s\n", + i, err, usb_error_string(err)); + goto __error; + } + set_bit(i + 16, &subs->active_mask); + } + } + return 0; + + __error: + // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN); + deactivate_urbs(subs, 0, 0); + return -EPIPE; +} + + +/* + */ +static struct snd_urb_ops audio_urb_ops[2] = { + { + .prepare = prepare_nodata_playback_urb, + .retire = retire_playback_urb, + .prepare_sync = prepare_playback_sync_urb, + .retire_sync = retire_playback_sync_urb, + }, + { + .prepare = prepare_capture_urb, + .retire = retire_capture_urb, + .prepare_sync = prepare_capture_sync_urb, + .retire_sync = retire_capture_sync_urb, + }, +}; + +static struct snd_urb_ops audio_urb_ops_high_speed[2] = { + { + .prepare = prepare_nodata_playback_urb, + .retire = retire_playback_urb, + .prepare_sync = prepare_playback_sync_urb_hs, + .retire_sync = retire_playback_sync_urb_hs, + }, + { + .prepare = prepare_capture_urb, + .retire = retire_capture_urb, + .prepare_sync = prepare_capture_sync_urb_hs, + .retire_sync = retire_capture_sync_urb, + }, +}; + +/* + * initialize the substream instance. + */ + +void snd_usb_init_substream(struct snd_usb_stream *as, + int stream, struct audioformat *fp) +{ + struct snd_usb_substream *subs = &as->substream[stream]; + + INIT_LIST_HEAD(&subs->fmt_list); + spin_lock_init(&subs->lock); + + subs->stream = as; + subs->direction = stream; + subs->dev = as->chip->dev; + subs->txfr_quirk = as->chip->txfr_quirk; + if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) { + subs->ops = audio_urb_ops[stream]; + } else { + subs->ops = audio_urb_ops_high_speed[stream]; + switch (as->chip->usb_id) { + case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */ + case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */ + case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */ + subs->ops.retire_sync = retire_playback_sync_urb_hs_emu; + break; + } + } + + snd_usb_set_pcm_ops(as->pcm, stream); + + list_add_tail(&fp->list, &subs->fmt_list); + subs->formats |= 1ULL << fp->format; + subs->endpoint = fp->endpoint; + subs->num_formats++; + subs->fmt_type = fp->fmt_type; +} + +int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_usb_substream *subs = substream->runtime->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + subs->ops.prepare = prepare_playback_urb; + return 0; + case SNDRV_PCM_TRIGGER_STOP: + return deactivate_urbs(subs, 0, 0); + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + subs->ops.prepare = prepare_nodata_playback_urb; + return 0; + } + + return -EINVAL; +} + +int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_usb_substream *subs = substream->runtime->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + subs->ops.retire = retire_capture_urb; + return start_urbs(subs, substream->runtime); + case SNDRV_PCM_TRIGGER_STOP: + return deactivate_urbs(subs, 0, 0); + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + subs->ops.retire = retire_paused_capture_urb; + return 0; + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + subs->ops.retire = retire_capture_urb; + return 0; + } + + return -EINVAL; +} + +int snd_usb_substream_prepare(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime) +{ + /* clear urbs (to be sure) */ + deactivate_urbs(subs, 0, 1); + wait_clear_urbs(subs); + + /* for playback, submit the URBs now; otherwise, the first hwptr_done + * updates for all URBs would happen at the same time when starting */ + if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) { + subs->ops.prepare = prepare_nodata_playback_urb; + return start_urbs(subs, runtime); + } + + return 0; +} + diff --git a/sound/usb/urb.h b/sound/usb/urb.h new file mode 100644 index 00000000000..888da38079c --- /dev/null +++ b/sound/usb/urb.h @@ -0,0 +1,21 @@ +#ifndef __USBAUDIO_URB_H +#define __USBAUDIO_URB_H + +void snd_usb_init_substream(struct snd_usb_stream *as, + int stream, + struct audioformat *fp); + +int snd_usb_init_substream_urbs(struct snd_usb_substream *subs, + unsigned int period_bytes, + unsigned int rate, + unsigned int frame_bits); + +void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force); + +int snd_usb_substream_prepare(struct snd_usb_substream *subs, + struct snd_pcm_runtime *runtime); + +int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd); +int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd); + +#endif /* __USBAUDIO_URB_H */ diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c deleted file mode 100644 index 5b91aa02b40..00000000000 --- a/sound/usb/usbaudio.c +++ /dev/null @@ -1,4051 +0,0 @@ -/* - * (Tentative) USB Audio Driver for ALSA - * - * Main and PCM part - * - * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de> - * - * Many codes borrowed from audio.c by - * Alan Cox (alan@lxorguk.ukuu.org.uk) - * Thomas Sailer (sailer@ife.ee.ethz.ch) - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * - * NOTES: - * - * - async unlink should be used for avoiding the sleep inside lock. - * 2.4.22 usb-uhci seems buggy for async unlinking and results in - * oops. in such a cse, pass async_unlink=0 option. - * - the linked URBs would be preferred but not used so far because of - * the instability of unlinking. - * - type II is not supported properly. there is no device which supports - * this type *correctly*. SB extigy looks as if it supports, but it's - * indeed an AC3 stream packed in SPDIF frames (i.e. no real AC3 stream). - */ - - -#include <linux/bitops.h> -#include <linux/init.h> -#include <linux/list.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/usb.h> -#include <linux/moduleparam.h> -#include <linux/mutex.h> -#include <linux/usb/audio.h> -#include <linux/usb/ch9.h> - -#include <sound/core.h> -#include <sound/info.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/initval.h> - -#include "usbaudio.h" -#include "usbmidi.h" -#include "usbmixer.h" - -MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); -MODULE_DESCRIPTION("USB Audio"); -MODULE_LICENSE("GPL"); -MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}"); - - -static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ -static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ -static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;/* Enable this card */ -/* Vendor/product IDs for this card */ -static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; -static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; -static int nrpacks = 8; /* max. number of packets per urb */ -static int async_unlink = 1; -static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/ -static int ignore_ctl_error; - -module_param_array(index, int, NULL, 0444); -MODULE_PARM_DESC(index, "Index value for the USB audio adapter."); -module_param_array(id, charp, NULL, 0444); -MODULE_PARM_DESC(id, "ID string for the USB audio adapter."); -module_param_array(enable, bool, NULL, 0444); -MODULE_PARM_DESC(enable, "Enable USB audio adapter."); -module_param_array(vid, int, NULL, 0444); -MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device."); -module_param_array(pid, int, NULL, 0444); -MODULE_PARM_DESC(pid, "Product ID for the USB audio device."); -module_param(nrpacks, int, 0644); -MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB."); -module_param(async_unlink, bool, 0444); -MODULE_PARM_DESC(async_unlink, "Use async unlink mode."); -module_param_array(device_setup, int, NULL, 0444); -MODULE_PARM_DESC(device_setup, "Specific device setup (if needed)."); -module_param(ignore_ctl_error, bool, 0444); -MODULE_PARM_DESC(ignore_ctl_error, - "Ignore errors from USB controller for mixer interfaces."); - -/* - * debug the h/w constraints - */ -/* #define HW_CONST_DEBUG */ - - -/* - * - */ - -#define MAX_PACKS 20 -#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */ -#define MAX_URBS 8 -#define SYNC_URBS 4 /* always four urbs for sync */ -#define MAX_QUEUE 24 /* try not to exceed this queue length, in ms */ - -struct audioformat { - struct list_head list; - snd_pcm_format_t format; /* format type */ - unsigned int channels; /* # channels */ - unsigned int fmt_type; /* USB audio format type (1-3) */ - unsigned int frame_size; /* samples per frame for non-audio */ - int iface; /* interface number */ - unsigned char altsetting; /* corresponding alternate setting */ - unsigned char altset_idx; /* array index of altenate setting */ - unsigned char attributes; /* corresponding attributes of cs endpoint */ - unsigned char endpoint; /* endpoint */ - unsigned char ep_attr; /* endpoint attributes */ - unsigned char datainterval; /* log_2 of data packet interval */ - unsigned int maxpacksize; /* max. packet size */ - unsigned int rates; /* rate bitmasks */ - unsigned int rate_min, rate_max; /* min/max rates */ - unsigned int nr_rates; /* number of rate table entries */ - unsigned int *rate_table; /* rate table */ -}; - -struct snd_usb_substream; - -struct snd_urb_ctx { - struct urb *urb; - unsigned int buffer_size; /* size of data buffer, if data URB */ - struct snd_usb_substream *subs; - int index; /* index for urb array */ - int packets; /* number of packets per urb */ -}; - -struct snd_urb_ops { - int (*prepare)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); - int (*retire)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); - int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); - int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u); -}; - -struct snd_usb_substream { - struct snd_usb_stream *stream; - struct usb_device *dev; - struct snd_pcm_substream *pcm_substream; - int direction; /* playback or capture */ - int interface; /* current interface */ - int endpoint; /* assigned endpoint */ - struct audioformat *cur_audiofmt; /* current audioformat pointer (for hw_params callback) */ - unsigned int cur_rate; /* current rate (for hw_params callback) */ - unsigned int period_bytes; /* current period bytes (for hw_params callback) */ - unsigned int format; /* USB data format */ - unsigned int datapipe; /* the data i/o pipe */ - unsigned int syncpipe; /* 1 - async out or adaptive in */ - unsigned int datainterval; /* log_2 of data packet interval */ - unsigned int syncinterval; /* P for adaptive mode, 0 otherwise */ - unsigned int freqn; /* nominal sampling rate in fs/fps in Q16.16 format */ - unsigned int freqm; /* momentary sampling rate in fs/fps in Q16.16 format */ - unsigned int freqmax; /* maximum sampling rate, used for buffer management */ - unsigned int phase; /* phase accumulator */ - unsigned int maxpacksize; /* max packet size in bytes */ - unsigned int maxframesize; /* max packet size in frames */ - unsigned int curpacksize; /* current packet size in bytes (for capture) */ - unsigned int curframesize; /* current packet size in frames (for capture) */ - unsigned int fill_max: 1; /* fill max packet size always */ - unsigned int txfr_quirk:1; /* allow sub-frame alignment */ - unsigned int fmt_type; /* USB audio format type (1-3) */ - - unsigned int running: 1; /* running status */ - - unsigned int hwptr_done; /* processed byte position in the buffer */ - unsigned int transfer_done; /* processed frames since last period update */ - unsigned long active_mask; /* bitmask of active urbs */ - unsigned long unlink_mask; /* bitmask of unlinked urbs */ - - unsigned int nurbs; /* # urbs */ - struct snd_urb_ctx dataurb[MAX_URBS]; /* data urb table */ - struct snd_urb_ctx syncurb[SYNC_URBS]; /* sync urb table */ - char *syncbuf; /* sync buffer for all sync URBs */ - dma_addr_t sync_dma; /* DMA address of syncbuf */ - - u64 formats; /* format bitmasks (all or'ed) */ - unsigned int num_formats; /* number of supported audio formats (list) */ - struct list_head fmt_list; /* format list */ - struct snd_pcm_hw_constraint_list rate_list; /* limited rates */ - spinlock_t lock; - - struct snd_urb_ops ops; /* callbacks (must be filled at init) */ -}; - - -struct snd_usb_stream { - struct snd_usb_audio *chip; - struct snd_pcm *pcm; - int pcm_index; - unsigned int fmt_type; /* USB audio format type (1-3) */ - struct snd_usb_substream substream[2]; - struct list_head list; -}; - - -/* - * we keep the snd_usb_audio_t instances by ourselves for merging - * the all interfaces on the same card as one sound device. - */ - -static DEFINE_MUTEX(register_mutex); -static struct snd_usb_audio *usb_chip[SNDRV_CARDS]; - - -/* - * convert a sampling rate into our full speed format (fs/1000 in Q16.16) - * this will overflow at approx 524 kHz - */ -static inline unsigned get_usb_full_speed_rate(unsigned int rate) -{ - return ((rate << 13) + 62) / 125; -} - -/* - * convert a sampling rate into USB high speed format (fs/8000 in Q16.16) - * this will overflow at approx 4 MHz - */ -static inline unsigned get_usb_high_speed_rate(unsigned int rate) -{ - return ((rate << 10) + 62) / 125; -} - -/* convert our full speed USB rate into sampling rate in Hz */ -static inline unsigned get_full_speed_hz(unsigned int usb_rate) -{ - return (usb_rate * 125 + (1 << 12)) >> 13; -} - -/* convert our high speed USB rate into sampling rate in Hz */ -static inline unsigned get_high_speed_hz(unsigned int usb_rate) -{ - return (usb_rate * 125 + (1 << 9)) >> 10; -} - - -/* - * prepare urb for full speed capture sync pipe - * - * fill the length and offset of each urb descriptor. - * the fixed 10.14 frequency is passed through the pipe. - */ -static int prepare_capture_sync_urb(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - unsigned char *cp = urb->transfer_buffer; - struct snd_urb_ctx *ctx = urb->context; - - urb->dev = ctx->subs->dev; /* we need to set this at each time */ - urb->iso_frame_desc[0].length = 3; - urb->iso_frame_desc[0].offset = 0; - cp[0] = subs->freqn >> 2; - cp[1] = subs->freqn >> 10; - cp[2] = subs->freqn >> 18; - return 0; -} - -/* - * prepare urb for high speed capture sync pipe - * - * fill the length and offset of each urb descriptor. - * the fixed 12.13 frequency is passed as 16.16 through the pipe. - */ -static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - unsigned char *cp = urb->transfer_buffer; - struct snd_urb_ctx *ctx = urb->context; - - urb->dev = ctx->subs->dev; /* we need to set this at each time */ - urb->iso_frame_desc[0].length = 4; - urb->iso_frame_desc[0].offset = 0; - cp[0] = subs->freqn; - cp[1] = subs->freqn >> 8; - cp[2] = subs->freqn >> 16; - cp[3] = subs->freqn >> 24; - return 0; -} - -/* - * process after capture sync complete - * - nothing to do - */ -static int retire_capture_sync_urb(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - return 0; -} - -/* - * prepare urb for capture data pipe - * - * fill the offset and length of each descriptor. - * - * we use a temporary buffer to write the captured data. - * since the length of written data is determined by host, we cannot - * write onto the pcm buffer directly... the data is thus copied - * later at complete callback to the global buffer. - */ -static int prepare_capture_urb(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - int i, offs; - struct snd_urb_ctx *ctx = urb->context; - - offs = 0; - urb->dev = ctx->subs->dev; /* we need to set this at each time */ - for (i = 0; i < ctx->packets; i++) { - urb->iso_frame_desc[i].offset = offs; - urb->iso_frame_desc[i].length = subs->curpacksize; - offs += subs->curpacksize; - } - urb->transfer_buffer_length = offs; - urb->number_of_packets = ctx->packets; - return 0; -} - -/* - * process after capture complete - * - * copy the data from each desctiptor to the pcm buffer, and - * update the current position. - */ -static int retire_capture_urb(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - unsigned long flags; - unsigned char *cp; - int i; - unsigned int stride, frames, bytes, oldptr; - int period_elapsed = 0; - - stride = runtime->frame_bits >> 3; - - for (i = 0; i < urb->number_of_packets; i++) { - cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; - if (urb->iso_frame_desc[i].status) { - snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status); - // continue; - } - bytes = urb->iso_frame_desc[i].actual_length; - frames = bytes / stride; - if (!subs->txfr_quirk) - bytes = frames * stride; - if (bytes % (runtime->sample_bits >> 3) != 0) { -#ifdef CONFIG_SND_DEBUG_VERBOSE - int oldbytes = bytes; -#endif - bytes = frames * stride; - snd_printdd(KERN_ERR "Corrected urb data len. %d->%d\n", - oldbytes, bytes); - } - /* update the current pointer */ - spin_lock_irqsave(&subs->lock, flags); - oldptr = subs->hwptr_done; - subs->hwptr_done += bytes; - if (subs->hwptr_done >= runtime->buffer_size * stride) - subs->hwptr_done -= runtime->buffer_size * stride; - frames = (bytes + (oldptr % stride)) / stride; - subs->transfer_done += frames; - if (subs->transfer_done >= runtime->period_size) { - subs->transfer_done -= runtime->period_size; - period_elapsed = 1; - } - spin_unlock_irqrestore(&subs->lock, flags); - /* copy a data chunk */ - if (oldptr + bytes > runtime->buffer_size * stride) { - unsigned int bytes1 = - runtime->buffer_size * stride - oldptr; - memcpy(runtime->dma_area + oldptr, cp, bytes1); - memcpy(runtime->dma_area, cp + bytes1, bytes - bytes1); - } else { - memcpy(runtime->dma_area + oldptr, cp, bytes); - } - } - if (period_elapsed) - snd_pcm_period_elapsed(subs->pcm_substream); - return 0; -} - -/* - * Process after capture complete when paused. Nothing to do. - */ -static int retire_paused_capture_urb(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - return 0; -} - - -/* - * prepare urb for full speed playback sync pipe - * - * set up the offset and length to receive the current frequency. - */ - -static int prepare_playback_sync_urb(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - struct snd_urb_ctx *ctx = urb->context; - - urb->dev = ctx->subs->dev; /* we need to set this at each time */ - urb->iso_frame_desc[0].length = 3; - urb->iso_frame_desc[0].offset = 0; - return 0; -} - -/* - * prepare urb for high speed playback sync pipe - * - * set up the offset and length to receive the current frequency. - */ - -static int prepare_playback_sync_urb_hs(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - struct snd_urb_ctx *ctx = urb->context; - - urb->dev = ctx->subs->dev; /* we need to set this at each time */ - urb->iso_frame_desc[0].length = 4; - urb->iso_frame_desc[0].offset = 0; - return 0; -} - -/* - * process after full speed playback sync complete - * - * retrieve the current 10.14 frequency from pipe, and set it. - * the value is referred in prepare_playback_urb(). - */ -static int retire_playback_sync_urb(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - unsigned int f; - unsigned long flags; - - if (urb->iso_frame_desc[0].status == 0 && - urb->iso_frame_desc[0].actual_length == 3) { - f = combine_triple((u8*)urb->transfer_buffer) << 2; - if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { - spin_lock_irqsave(&subs->lock, flags); - subs->freqm = f; - spin_unlock_irqrestore(&subs->lock, flags); - } - } - - return 0; -} - -/* - * process after high speed playback sync complete - * - * retrieve the current 12.13 frequency from pipe, and set it. - * the value is referred in prepare_playback_urb(). - */ -static int retire_playback_sync_urb_hs(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - unsigned int f; - unsigned long flags; - - if (urb->iso_frame_desc[0].status == 0 && - urb->iso_frame_desc[0].actual_length == 4) { - f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff; - if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { - spin_lock_irqsave(&subs->lock, flags); - subs->freqm = f; - spin_unlock_irqrestore(&subs->lock, flags); - } - } - - return 0; -} - -/* - * process after E-Mu 0202/0404/Tracker Pre high speed playback sync complete - * - * These devices return the number of samples per packet instead of the number - * of samples per microframe. - */ -static int retire_playback_sync_urb_hs_emu(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - unsigned int f; - unsigned long flags; - - if (urb->iso_frame_desc[0].status == 0 && - urb->iso_frame_desc[0].actual_length == 4) { - f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff; - f >>= subs->datainterval; - if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) { - spin_lock_irqsave(&subs->lock, flags); - subs->freqm = f; - spin_unlock_irqrestore(&subs->lock, flags); - } - } - - return 0; -} - -/* determine the number of frames in the next packet */ -static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs) -{ - if (subs->fill_max) - return subs->maxframesize; - else { - subs->phase = (subs->phase & 0xffff) - + (subs->freqm << subs->datainterval); - return min(subs->phase >> 16, subs->maxframesize); - } -} - -/* - * Prepare urb for streaming before playback starts or when paused. - * - * We don't have any data, so we send silence. - */ -static int prepare_nodata_playback_urb(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - unsigned int i, offs, counts; - struct snd_urb_ctx *ctx = urb->context; - int stride = runtime->frame_bits >> 3; - - offs = 0; - urb->dev = ctx->subs->dev; - for (i = 0; i < ctx->packets; ++i) { - counts = snd_usb_audio_next_packet_size(subs); - urb->iso_frame_desc[i].offset = offs * stride; - urb->iso_frame_desc[i].length = counts * stride; - offs += counts; - } - urb->number_of_packets = ctx->packets; - urb->transfer_buffer_length = offs * stride; - memset(urb->transfer_buffer, - subs->cur_audiofmt->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0, - offs * stride); - return 0; -} - -/* - * prepare urb for playback data pipe - * - * Since a URB can handle only a single linear buffer, we must use double - * buffering when the data to be transferred overflows the buffer boundary. - * To avoid inconsistencies when updating hwptr_done, we use double buffering - * for all URBs. - */ -static int prepare_playback_urb(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - int i, stride; - unsigned int counts, frames, bytes; - unsigned long flags; - int period_elapsed = 0; - struct snd_urb_ctx *ctx = urb->context; - - stride = runtime->frame_bits >> 3; - - frames = 0; - urb->dev = ctx->subs->dev; /* we need to set this at each time */ - urb->number_of_packets = 0; - spin_lock_irqsave(&subs->lock, flags); - for (i = 0; i < ctx->packets; i++) { - counts = snd_usb_audio_next_packet_size(subs); - /* set up descriptor */ - urb->iso_frame_desc[i].offset = frames * stride; - urb->iso_frame_desc[i].length = counts * stride; - frames += counts; - urb->number_of_packets++; - subs->transfer_done += counts; - if (subs->transfer_done >= runtime->period_size) { - subs->transfer_done -= runtime->period_size; - period_elapsed = 1; - if (subs->fmt_type == UAC_FORMAT_TYPE_II) { - if (subs->transfer_done > 0) { - /* FIXME: fill-max mode is not - * supported yet */ - frames -= subs->transfer_done; - counts -= subs->transfer_done; - urb->iso_frame_desc[i].length = - counts * stride; - subs->transfer_done = 0; - } - i++; - if (i < ctx->packets) { - /* add a transfer delimiter */ - urb->iso_frame_desc[i].offset = - frames * stride; - urb->iso_frame_desc[i].length = 0; - urb->number_of_packets++; - } - break; - } - } - if (period_elapsed) /* finish at the period boundary */ - break; - } - bytes = frames * stride; - if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { - /* err, the transferred area goes over buffer boundary. */ - unsigned int bytes1 = - runtime->buffer_size * stride - subs->hwptr_done; - memcpy(urb->transfer_buffer, - runtime->dma_area + subs->hwptr_done, bytes1); - memcpy(urb->transfer_buffer + bytes1, - runtime->dma_area, bytes - bytes1); - } else { - memcpy(urb->transfer_buffer, - runtime->dma_area + subs->hwptr_done, bytes); - } - subs->hwptr_done += bytes; - if (subs->hwptr_done >= runtime->buffer_size * stride) - subs->hwptr_done -= runtime->buffer_size * stride; - runtime->delay += frames; - spin_unlock_irqrestore(&subs->lock, flags); - urb->transfer_buffer_length = bytes; - if (period_elapsed) - snd_pcm_period_elapsed(subs->pcm_substream); - return 0; -} - -/* - * process after playback data complete - * - decrease the delay count again - */ -static int retire_playback_urb(struct snd_usb_substream *subs, - struct snd_pcm_runtime *runtime, - struct urb *urb) -{ - unsigned long flags; - int stride = runtime->frame_bits >> 3; - int processed = urb->transfer_buffer_length / stride; - - spin_lock_irqsave(&subs->lock, flags); - if (processed > runtime->delay) - runtime->delay = 0; - else - runtime->delay -= processed; - spin_unlock_irqrestore(&subs->lock, flags); - return 0; -} - - -/* - */ -static struct snd_urb_ops audio_urb_ops[2] = { - { - .prepare = prepare_nodata_playback_urb, - .retire = retire_playback_urb, - .prepare_sync = prepare_playback_sync_urb, - .retire_sync = retire_playback_sync_urb, - }, - { - .prepare = prepare_capture_urb, - .retire = retire_capture_urb, - .prepare_sync = prepare_capture_sync_urb, - .retire_sync = retire_capture_sync_urb, - }, -}; - -static struct snd_urb_ops audio_urb_ops_high_speed[2] = { - { - .prepare = prepare_nodata_playback_urb, - .retire = retire_playback_urb, - .prepare_sync = prepare_playback_sync_urb_hs, - .retire_sync = retire_playback_sync_urb_hs, - }, - { - .prepare = prepare_capture_urb, - .retire = retire_capture_urb, - .prepare_sync = prepare_capture_sync_urb_hs, - .retire_sync = retire_capture_sync_urb, - }, -}; - -/* - * complete callback from data urb - */ -static void snd_complete_urb(struct urb *urb) -{ - struct snd_urb_ctx *ctx = urb->context; - struct snd_usb_substream *subs = ctx->subs; - struct snd_pcm_substream *substream = ctx->subs->pcm_substream; - int err = 0; - - if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) || - !subs->running || /* can be stopped during retire callback */ - (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 || - (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { - clear_bit(ctx->index, &subs->active_mask); - if (err < 0) { - snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err); - snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); - } - } -} - - -/* - * complete callback from sync urb - */ -static void snd_complete_sync_urb(struct urb *urb) -{ - struct snd_urb_ctx *ctx = urb->context; - struct snd_usb_substream *subs = ctx->subs; - struct snd_pcm_substream *substream = ctx->subs->pcm_substream; - int err = 0; - - if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) || - !subs->running || /* can be stopped during retire callback */ - (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 || - (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { - clear_bit(ctx->index + 16, &subs->active_mask); - if (err < 0) { - snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err); - snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); - } - } -} - - -/* - * unlink active urbs. - */ -static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep) -{ - unsigned int i; - int async; - - subs->running = 0; - - if (!force && subs->stream->chip->shutdown) /* to be sure... */ - return -EBADFD; - - async = !can_sleep && async_unlink; - - if (!async && in_interrupt()) - return 0; - - for (i = 0; i < subs->nurbs; i++) { - if (test_bit(i, &subs->active_mask)) { - if (!test_and_set_bit(i, &subs->unlink_mask)) { - struct urb *u = subs->dataurb[i].urb; - if (async) - usb_unlink_urb(u); - else - usb_kill_urb(u); - } - } - } - if (subs->syncpipe) { - for (i = 0; i < SYNC_URBS; i++) { - if (test_bit(i+16, &subs->active_mask)) { - if (!test_and_set_bit(i+16, &subs->unlink_mask)) { - struct urb *u = subs->syncurb[i].urb; - if (async) - usb_unlink_urb(u); - else - usb_kill_urb(u); - } - } - } - } - return 0; -} - - -static const char *usb_error_string(int err) -{ - switch (err) { - case -ENODEV: - return "no device"; - case -ENOENT: - return "endpoint not enabled"; - case -EPIPE: - return "endpoint stalled"; - case -ENOSPC: - return "not enough bandwidth"; - case -ESHUTDOWN: - return "device disabled"; - case -EHOSTUNREACH: - return "device suspended"; - case -EINVAL: - case -EAGAIN: - case -EFBIG: - case -EMSGSIZE: - return "internal error"; - default: - return "unknown error"; - } -} - -/* - * set up and start data/sync urbs - */ -static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime) -{ - unsigned int i; - int err; - - if (subs->stream->chip->shutdown) - return -EBADFD; - - for (i = 0; i < subs->nurbs; i++) { - if (snd_BUG_ON(!subs->dataurb[i].urb)) - return -EINVAL; - if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) { - snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i); - goto __error; - } - } - if (subs->syncpipe) { - for (i = 0; i < SYNC_URBS; i++) { - if (snd_BUG_ON(!subs->syncurb[i].urb)) - return -EINVAL; - if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) { - snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i); - goto __error; - } - } - } - - subs->active_mask = 0; - subs->unlink_mask = 0; - subs->running = 1; - for (i = 0; i < subs->nurbs; i++) { - err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC); - if (err < 0) { - snd_printk(KERN_ERR "cannot submit datapipe " - "for urb %d, error %d: %s\n", - i, err, usb_error_string(err)); - goto __error; - } - set_bit(i, &subs->active_mask); - } - if (subs->syncpipe) { - for (i = 0; i < SYNC_URBS; i++) { - err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC); - if (err < 0) { - snd_printk(KERN_ERR "cannot submit syncpipe " - "for urb %d, error %d: %s\n", - i, err, usb_error_string(err)); - goto __error; - } - set_bit(i + 16, &subs->active_mask); - } - } - return 0; - - __error: - // snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN); - deactivate_urbs(subs, 0, 0); - return -EPIPE; -} - - -/* - * wait until all urbs are processed. - */ -static int wait_clear_urbs(struct snd_usb_substream *subs) -{ - unsigned long end_time = jiffies + msecs_to_jiffies(1000); - unsigned int i; - int alive; - - do { - alive = 0; - for (i = 0; i < subs->nurbs; i++) { - if (test_bit(i, &subs->active_mask)) - alive++; - } - if (subs->syncpipe) { - for (i = 0; i < SYNC_URBS; i++) { - if (test_bit(i + 16, &subs->active_mask)) - alive++; - } - } - if (! alive) - break; - schedule_timeout_uninterruptible(1); - } while (time_before(jiffies, end_time)); - if (alive) - snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive); - return 0; -} - - -/* - * return the current pcm pointer. just based on the hwptr_done value. - */ -static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream) -{ - struct snd_usb_substream *subs; - unsigned int hwptr_done; - - subs = (struct snd_usb_substream *)substream->runtime->private_data; - spin_lock(&subs->lock); - hwptr_done = subs->hwptr_done; - spin_unlock(&subs->lock); - return hwptr_done / (substream->runtime->frame_bits >> 3); -} - - -/* - * start/stop playback substream - */ -static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream *substream, - int cmd) -{ - struct snd_usb_substream *subs = substream->runtime->private_data; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - subs->ops.prepare = prepare_playback_urb; - return 0; - case SNDRV_PCM_TRIGGER_STOP: - return deactivate_urbs(subs, 0, 0); - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - subs->ops.prepare = prepare_nodata_playback_urb; - return 0; - default: - return -EINVAL; - } -} - -/* - * start/stop capture substream - */ -static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream *substream, - int cmd) -{ - struct snd_usb_substream *subs = substream->runtime->private_data; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - subs->ops.retire = retire_capture_urb; - return start_urbs(subs, substream->runtime); - case SNDRV_PCM_TRIGGER_STOP: - return deactivate_urbs(subs, 0, 0); - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - subs->ops.retire = retire_paused_capture_urb; - return 0; - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - subs->ops.retire = retire_capture_urb; - return 0; - default: - return -EINVAL; - } -} - - -/* - * release a urb data - */ -static void release_urb_ctx(struct snd_urb_ctx *u) -{ - if (u->urb) { - if (u->buffer_size) - usb_buffer_free(u->subs->dev, u->buffer_size, - u->urb->transfer_buffer, - u->urb->transfer_dma); - usb_free_urb(u->urb); - u->urb = NULL; - } -} - -/* - * release a substream - */ -static void release_substream_urbs(struct snd_usb_substream *subs, int force) -{ - int i; - - /* stop urbs (to be sure) */ - deactivate_urbs(subs, force, 1); - wait_clear_urbs(subs); - - for (i = 0; i < MAX_URBS; i++) - release_urb_ctx(&subs->dataurb[i]); - for (i = 0; i < SYNC_URBS; i++) - release_urb_ctx(&subs->syncurb[i]); - usb_buffer_free(subs->dev, SYNC_URBS * 4, - subs->syncbuf, subs->sync_dma); - subs->syncbuf = NULL; - subs->nurbs = 0; -} - -/* - * initialize a substream for plaback/capture - */ -static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int period_bytes, - unsigned int rate, unsigned int frame_bits) -{ - unsigned int maxsize, i; - int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; - unsigned int urb_packs, total_packs, packs_per_ms; - - /* calculate the frequency in 16.16 format */ - if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) - subs->freqn = get_usb_full_speed_rate(rate); - else - subs->freqn = get_usb_high_speed_rate(rate); - subs->freqm = subs->freqn; - /* calculate max. frequency */ - if (subs->maxpacksize) { - /* whatever fits into a max. size packet */ - maxsize = subs->maxpacksize; - subs->freqmax = (maxsize / (frame_bits >> 3)) - << (16 - subs->datainterval); - } else { - /* no max. packet size: just take 25% higher than nominal */ - subs->freqmax = subs->freqn + (subs->freqn >> 2); - maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3)) - >> (16 - subs->datainterval); - } - subs->phase = 0; - - if (subs->fill_max) - subs->curpacksize = subs->maxpacksize; - else - subs->curpacksize = maxsize; - - if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) - packs_per_ms = 8 >> subs->datainterval; - else - packs_per_ms = 1; - - if (is_playback) { - urb_packs = max(nrpacks, 1); - urb_packs = min(urb_packs, (unsigned int)MAX_PACKS); - } else - urb_packs = 1; - urb_packs *= packs_per_ms; - if (subs->syncpipe) - urb_packs = min(urb_packs, 1U << subs->syncinterval); - - /* decide how many packets to be used */ - if (is_playback) { - unsigned int minsize, maxpacks; - /* determine how small a packet can be */ - minsize = (subs->freqn >> (16 - subs->datainterval)) - * (frame_bits >> 3); - /* with sync from device, assume it can be 12% lower */ - if (subs->syncpipe) - minsize -= minsize >> 3; - minsize = max(minsize, 1u); - total_packs = (period_bytes + minsize - 1) / minsize; - /* we need at least two URBs for queueing */ - if (total_packs < 2) { - total_packs = 2; - } else { - /* and we don't want too long a queue either */ - maxpacks = max(MAX_QUEUE * packs_per_ms, urb_packs * 2); - total_packs = min(total_packs, maxpacks); - } - } else { - while (urb_packs > 1 && urb_packs * maxsize >= period_bytes) - urb_packs >>= 1; - total_packs = MAX_URBS * urb_packs; - } - subs->nurbs = (total_packs + urb_packs - 1) / urb_packs; - if (subs->nurbs > MAX_URBS) { - /* too much... */ - subs->nurbs = MAX_URBS; - total_packs = MAX_URBS * urb_packs; - } else if (subs->nurbs < 2) { - /* too little - we need at least two packets - * to ensure contiguous playback/capture - */ - subs->nurbs = 2; - } - - /* allocate and initialize data urbs */ - for (i = 0; i < subs->nurbs; i++) { - struct snd_urb_ctx *u = &subs->dataurb[i]; - u->index = i; - u->subs = subs; - u->packets = (i + 1) * total_packs / subs->nurbs - - i * total_packs / subs->nurbs; - u->buffer_size = maxsize * u->packets; - if (subs->fmt_type == UAC_FORMAT_TYPE_II) - u->packets++; /* for transfer delimiter */ - u->urb = usb_alloc_urb(u->packets, GFP_KERNEL); - if (!u->urb) - goto out_of_memory; - u->urb->transfer_buffer = - usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL, - &u->urb->transfer_dma); - if (!u->urb->transfer_buffer) - goto out_of_memory; - u->urb->pipe = subs->datapipe; - u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; - u->urb->interval = 1 << subs->datainterval; - u->urb->context = u; - u->urb->complete = snd_complete_urb; - } - - if (subs->syncpipe) { - /* allocate and initialize sync urbs */ - subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4, - GFP_KERNEL, &subs->sync_dma); - if (!subs->syncbuf) - goto out_of_memory; - for (i = 0; i < SYNC_URBS; i++) { - struct snd_urb_ctx *u = &subs->syncurb[i]; - u->index = i; - u->subs = subs; - u->packets = 1; - u->urb = usb_alloc_urb(1, GFP_KERNEL); - if (!u->urb) - goto out_of_memory; - u->urb->transfer_buffer = subs->syncbuf + i * 4; - u->urb->transfer_dma = subs->sync_dma + i * 4; - u->urb->transfer_buffer_length = 4; - u->urb->pipe = subs->syncpipe; - u->urb->transfer_flags = URB_ISO_ASAP | - URB_NO_TRANSFER_DMA_MAP; - u->urb->number_of_packets = 1; - u->urb->interval = 1 << subs->syncinterval; - u->urb->context = u; - u->urb->complete = snd_complete_sync_urb; - } - } - return 0; - -out_of_memory: - release_substream_urbs(subs, 0); - return -ENOMEM; -} - - -/* - * find a matching audio format - */ -static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format, - unsigned int rate, unsigned int channels) -{ - struct list_head *p; - struct audioformat *found = NULL; - int cur_attr = 0, attr; - - list_for_each(p, &subs->fmt_list) { - struct audioformat *fp; - fp = list_entry(p, struct audioformat, list); - if (fp->format != format || fp->channels != channels) - continue; - if (rate < fp->rate_min || rate > fp->rate_max) - continue; - if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) { - unsigned int i; - for (i = 0; i < fp->nr_rates; i++) - if (fp->rate_table[i] == rate) - break; - if (i >= fp->nr_rates) - continue; - } - attr = fp->ep_attr & USB_ENDPOINT_SYNCTYPE; - if (! found) { - found = fp; - cur_attr = attr; - continue; - } - /* avoid async out and adaptive in if the other method - * supports the same format. - * this is a workaround for the case like - * M-audio audiophile USB. - */ - if (attr != cur_attr) { - if ((attr == USB_ENDPOINT_SYNC_ASYNC && - subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || - (attr == USB_ENDPOINT_SYNC_ADAPTIVE && - subs->direction == SNDRV_PCM_STREAM_CAPTURE)) - continue; - if ((cur_attr == USB_ENDPOINT_SYNC_ASYNC && - subs->direction == SNDRV_PCM_STREAM_PLAYBACK) || - (cur_attr == USB_ENDPOINT_SYNC_ADAPTIVE && - subs->direction == SNDRV_PCM_STREAM_CAPTURE)) { - found = fp; - cur_attr = attr; - continue; - } - } - /* find the format with the largest max. packet size */ - if (fp->maxpacksize > found->maxpacksize) { - found = fp; - cur_attr = attr; - } - } - return found; -} - - -/* - * initialize the picth control and sample rate - */ -static int init_usb_pitch(struct usb_device *dev, int iface, - struct usb_host_interface *alts, - struct audioformat *fmt) -{ - unsigned int ep; - unsigned char data[1]; - int err; - - ep = get_endpoint(alts, 0)->bEndpointAddress; - /* if endpoint has pitch control, enable it */ - if (fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL) { - data[0] = 1; - if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, - USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, - UAC_EP_CS_ATTR_PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) { - snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n", - dev->devnum, iface, ep); - return err; - } - } - return 0; -} - -static int init_usb_sample_rate(struct usb_device *dev, int iface, - struct usb_host_interface *alts, - struct audioformat *fmt, int rate) -{ - unsigned int ep; - unsigned char data[3]; - int err; - - ep = get_endpoint(alts, 0)->bEndpointAddress; - /* if endpoint has sampling rate control, set it */ - if (fmt->attributes & UAC_EP_CS_ATTR_SAMPLE_RATE) { - int crate; - data[0] = rate; - data[1] = rate >> 8; - data[2] = rate >> 16; - if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, - USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, - UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000)) < 0) { - snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep %#x\n", - dev->devnum, iface, fmt->altsetting, rate, ep); - return err; - } - if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC_GET_CUR, - USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN, - UAC_EP_CS_ATTR_SAMPLE_RATE << 8, ep, data, 3, 1000)) < 0) { - snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep %#x\n", - dev->devnum, iface, fmt->altsetting, ep); - return 0; /* some devices don't support reading */ - } - crate = data[0] | (data[1] << 8) | (data[2] << 16); - if (crate != rate) { - snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate); - // runtime->rate = crate; - } - } - return 0; -} - -/* - * For E-Mu 0404USB/0202USB/TrackerPre sample rate should be set for device, - * not for interface. - */ -static void set_format_emu_quirk(struct snd_usb_substream *subs, - struct audioformat *fmt) -{ - unsigned char emu_samplerate_id = 0; - - /* When capture is active - * sample rate shouldn't be changed - * by playback substream - */ - if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) { - if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1) - return; - } - - switch (fmt->rate_min) { - case 48000: - emu_samplerate_id = EMU_QUIRK_SR_48000HZ; - break; - case 88200: - emu_samplerate_id = EMU_QUIRK_SR_88200HZ; - break; - case 96000: - emu_samplerate_id = EMU_QUIRK_SR_96000HZ; - break; - case 176400: - emu_samplerate_id = EMU_QUIRK_SR_176400HZ; - break; - case 192000: - emu_samplerate_id = EMU_QUIRK_SR_192000HZ; - break; - default: - emu_samplerate_id = EMU_QUIRK_SR_44100HZ; - break; - } - snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id); -} - -/* - * find a matching format and set up the interface - */ -static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) -{ - struct usb_device *dev = subs->dev; - struct usb_host_interface *alts; - struct usb_interface_descriptor *altsd; - struct usb_interface *iface; - unsigned int ep, attr; - int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; - int err; - - iface = usb_ifnum_to_if(dev, fmt->iface); - if (WARN_ON(!iface)) - return -EINVAL; - alts = &iface->altsetting[fmt->altset_idx]; - altsd = get_iface_desc(alts); - if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting)) - return -EINVAL; - - if (fmt == subs->cur_audiofmt) - return 0; - - /* close the old interface */ - if (subs->interface >= 0 && subs->interface != fmt->iface) { - if (usb_set_interface(subs->dev, subs->interface, 0) < 0) { - snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed\n", - dev->devnum, fmt->iface, fmt->altsetting); - return -EIO; - } - subs->interface = -1; - subs->format = 0; - } - - /* set interface */ - if (subs->interface != fmt->iface || subs->format != fmt->altset_idx) { - if (usb_set_interface(dev, fmt->iface, fmt->altsetting) < 0) { - snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed\n", - dev->devnum, fmt->iface, fmt->altsetting); - return -EIO; - } - snd_printdd(KERN_INFO "setting usb interface %d:%d\n", fmt->iface, fmt->altsetting); - subs->interface = fmt->iface; - subs->format = fmt->altset_idx; - } - - /* create a data pipe */ - ep = fmt->endpoint & USB_ENDPOINT_NUMBER_MASK; - if (is_playback) - subs->datapipe = usb_sndisocpipe(dev, ep); - else - subs->datapipe = usb_rcvisocpipe(dev, ep); - subs->datainterval = fmt->datainterval; - subs->syncpipe = subs->syncinterval = 0; - subs->maxpacksize = fmt->maxpacksize; - subs->fill_max = 0; - - /* we need a sync pipe in async OUT or adaptive IN mode */ - /* check the number of EP, since some devices have broken - * descriptors which fool us. if it has only one EP, - * assume it as adaptive-out or sync-in. - */ - attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; - if (((is_playback && attr == USB_ENDPOINT_SYNC_ASYNC) || - (! is_playback && attr == USB_ENDPOINT_SYNC_ADAPTIVE)) && - altsd->bNumEndpoints >= 2) { - /* check sync-pipe endpoint */ - /* ... and check descriptor size before accessing bSynchAddress - because there is a version of the SB Audigy 2 NX firmware lacking - the audio fields in the endpoint descriptors */ - if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 || - (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && - get_endpoint(alts, 1)->bSynchAddress != 0)) { - snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n", - dev->devnum, fmt->iface, fmt->altsetting); - return -EINVAL; - } - ep = get_endpoint(alts, 1)->bEndpointAddress; - if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && - (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) || - (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) { - snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n", - dev->devnum, fmt->iface, fmt->altsetting); - return -EINVAL; - } - ep &= USB_ENDPOINT_NUMBER_MASK; - if (is_playback) - subs->syncpipe = usb_rcvisocpipe(dev, ep); - else - subs->syncpipe = usb_sndisocpipe(dev, ep); - if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && - get_endpoint(alts, 1)->bRefresh >= 1 && - get_endpoint(alts, 1)->bRefresh <= 9) - subs->syncinterval = get_endpoint(alts, 1)->bRefresh; - else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) - subs->syncinterval = 1; - else if (get_endpoint(alts, 1)->bInterval >= 1 && - get_endpoint(alts, 1)->bInterval <= 16) - subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1; - else - subs->syncinterval = 3; - } - - /* always fill max packet size */ - if (fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX) - subs->fill_max = 1; - - if ((err = init_usb_pitch(dev, subs->interface, alts, fmt)) < 0) - return err; - - subs->cur_audiofmt = fmt; - - switch (subs->stream->chip->usb_id) { - case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */ - case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */ - case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */ - set_format_emu_quirk(subs, fmt); - break; - } - -#if 0 - printk(KERN_DEBUG - "setting done: format = %d, rate = %d..%d, channels = %d\n", - fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels); - printk(KERN_DEBUG - " datapipe = 0x%0x, syncpipe = 0x%0x\n", - subs->datapipe, subs->syncpipe); -#endif - - return 0; -} - -/* - * hw_params callback - * - * allocate a buffer and set the given audio format. - * - * so far we use a physically linear buffer although packetize transfer - * doesn't need a continuous area. - * if sg buffer is supported on the later version of alsa, we'll follow - * that. - */ -static int snd_usb_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - struct snd_usb_substream *subs = substream->runtime->private_data; - struct audioformat *fmt; - unsigned int channels, rate, format; - int ret, changed; - - ret = snd_pcm_lib_alloc_vmalloc_buffer(substream, - params_buffer_bytes(hw_params)); - if (ret < 0) - return ret; - - format = params_format(hw_params); - rate = params_rate(hw_params); - channels = params_channels(hw_params); - fmt = find_format(subs, format, rate, channels); - if (!fmt) { - snd_printd(KERN_DEBUG "cannot set format: format = %#x, rate = %d, channels = %d\n", - format, rate, channels); - return -EINVAL; - } - - changed = subs->cur_audiofmt != fmt || - subs->period_bytes != params_period_bytes(hw_params) || - subs->cur_rate != rate; - if ((ret = set_format(subs, fmt)) < 0) - return ret; - - if (subs->cur_rate != rate) { - struct usb_host_interface *alts; - struct usb_interface *iface; - iface = usb_ifnum_to_if(subs->dev, fmt->iface); - alts = &iface->altsetting[fmt->altset_idx]; - ret = init_usb_sample_rate(subs->dev, subs->interface, alts, fmt, rate); - if (ret < 0) - return ret; - subs->cur_rate = rate; - } - - if (changed) { - /* format changed */ - release_substream_urbs(subs, 0); - /* influenced: period_bytes, channels, rate, format, */ - ret = init_substream_urbs(subs, params_period_bytes(hw_params), - params_rate(hw_params), - snd_pcm_format_physical_width(params_format(hw_params)) * params_channels(hw_params)); - } - - return ret; -} - -/* - * hw_free callback - * - * reset the audio format and release the buffer - */ -static int snd_usb_hw_free(struct snd_pcm_substream *substream) -{ - struct snd_usb_substream *subs = substream->runtime->private_data; - - subs->cur_audiofmt = NULL; - subs->cur_rate = 0; - subs->period_bytes = 0; - if (!subs->stream->chip->shutdown) - release_substream_urbs(subs, 0); - return snd_pcm_lib_free_vmalloc_buffer(substream); -} - -/* - * prepare callback - * - * only a few subtle things... - */ -static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_usb_substream *subs = runtime->private_data; - - if (! subs->cur_audiofmt) { - snd_printk(KERN_ERR "usbaudio: no format is specified!\n"); - return -ENXIO; - } - - /* some unit conversions in runtime */ - subs->maxframesize = bytes_to_frames(runtime, subs->maxpacksize); - subs->curframesize = bytes_to_frames(runtime, subs->curpacksize); - - /* reset the pointer */ - subs->hwptr_done = 0; - subs->transfer_done = 0; - subs->phase = 0; - runtime->delay = 0; - - /* clear urbs (to be sure) */ - deactivate_urbs(subs, 0, 1); - wait_clear_urbs(subs); - - /* for playback, submit the URBs now; otherwise, the first hwptr_done - * updates for all URBs would happen at the same time when starting */ - if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) { - subs->ops.prepare = prepare_nodata_playback_urb; - return start_urbs(subs, runtime); - } else - return 0; -} - -static struct snd_pcm_hardware snd_usb_hardware = -{ - .info = SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_MMAP_VALID | - SNDRV_PCM_INFO_BATCH | - SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_BLOCK_TRANSFER | - SNDRV_PCM_INFO_PAUSE, - .buffer_bytes_max = 1024 * 1024, - .period_bytes_min = 64, - .period_bytes_max = 512 * 1024, - .periods_min = 2, - .periods_max = 1024, -}; - -/* - * h/w constraints - */ - -#ifdef HW_CONST_DEBUG -#define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args) -#else -#define hwc_debug(fmt, args...) /**/ -#endif - -static int hw_check_valid_format(struct snd_usb_substream *subs, - struct snd_pcm_hw_params *params, - struct audioformat *fp) -{ - struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); - struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); - struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); - struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); - unsigned int ptime; - - /* check the format */ - if (!snd_mask_test(fmts, fp->format)) { - hwc_debug(" > check: no supported format %d\n", fp->format); - return 0; - } - /* check the channels */ - if (fp->channels < ct->min || fp->channels > ct->max) { - hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max); - return 0; - } - /* check the rate is within the range */ - if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) { - hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max); - return 0; - } - if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) { - hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min); - return 0; - } - /* check whether the period time is >= the data packet interval */ - if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) { - ptime = 125 * (1 << fp->datainterval); - if (ptime > pt->max || (ptime == pt->max && pt->openmax)) { - hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max); - return 0; - } - } - return 1; -} - -static int hw_rule_rate(struct snd_pcm_hw_params *params, - struct snd_pcm_hw_rule *rule) -{ - struct snd_usb_substream *subs = rule->private; - struct list_head *p; - struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); - unsigned int rmin, rmax; - int changed; - - hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max); - changed = 0; - rmin = rmax = 0; - list_for_each(p, &subs->fmt_list) { - struct audioformat *fp; - fp = list_entry(p, struct audioformat, list); - if (!hw_check_valid_format(subs, params, fp)) - continue; - if (changed++) { - if (rmin > fp->rate_min) - rmin = fp->rate_min; - if (rmax < fp->rate_max) - rmax = fp->rate_max; - } else { - rmin = fp->rate_min; - rmax = fp->rate_max; - } - } - - if (!changed) { - hwc_debug(" --> get empty\n"); - it->empty = 1; - return -EINVAL; - } - - changed = 0; - if (it->min < rmin) { - it->min = rmin; - it->openmin = 0; - changed = 1; - } - if (it->max > rmax) { - it->max = rmax; - it->openmax = 0; - changed = 1; - } - if (snd_interval_checkempty(it)) { - it->empty = 1; - return -EINVAL; - } - hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); - return changed; -} - - -static int hw_rule_channels(struct snd_pcm_hw_params *params, - struct snd_pcm_hw_rule *rule) -{ - struct snd_usb_substream *subs = rule->private; - struct list_head *p; - struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); - unsigned int rmin, rmax; - int changed; - - hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max); - changed = 0; - rmin = rmax = 0; - list_for_each(p, &subs->fmt_list) { - struct audioformat *fp; - fp = list_entry(p, struct audioformat, list); - if (!hw_check_valid_format(subs, params, fp)) - continue; - if (changed++) { - if (rmin > fp->channels) - rmin = fp->channels; - if (rmax < fp->channels) - rmax = fp->channels; - } else { - rmin = fp->channels; - rmax = fp->channels; - } - } - - if (!changed) { - hwc_debug(" --> get empty\n"); - it->empty = 1; - return -EINVAL; - } - - changed = 0; - if (it->min < rmin) { - it->min = rmin; - it->openmin = 0; - changed = 1; - } - if (it->max > rmax) { - it->max = rmax; - it->openmax = 0; - changed = 1; - } - if (snd_interval_checkempty(it)) { - it->empty = 1; - return -EINVAL; - } - hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed); - return changed; -} - -static int hw_rule_format(struct snd_pcm_hw_params *params, - struct snd_pcm_hw_rule *rule) -{ - struct snd_usb_substream *subs = rule->private; - struct list_head *p; - struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); - u64 fbits; - u32 oldbits[2]; - int changed; - - hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]); - fbits = 0; - list_for_each(p, &subs->fmt_list) { - struct audioformat *fp; - fp = list_entry(p, struct audioformat, list); - if (!hw_check_valid_format(subs, params, fp)) - continue; - fbits |= (1ULL << fp->format); - } - - oldbits[0] = fmt->bits[0]; - oldbits[1] = fmt->bits[1]; - fmt->bits[0] &= (u32)fbits; - fmt->bits[1] &= (u32)(fbits >> 32); - if (!fmt->bits[0] && !fmt->bits[1]) { - hwc_debug(" --> get empty\n"); - return -EINVAL; - } - changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]); - hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed); - return changed; -} - -static int hw_rule_period_time(struct snd_pcm_hw_params *params, - struct snd_pcm_hw_rule *rule) -{ - struct snd_usb_substream *subs = rule->private; - struct audioformat *fp; - struct snd_interval *it; - unsigned char min_datainterval; - unsigned int pmin; - int changed; - - it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME); - hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max); - min_datainterval = 0xff; - list_for_each_entry(fp, &subs->fmt_list, list) { - if (!hw_check_valid_format(subs, params, fp)) - continue; - min_datainterval = min(min_datainterval, fp->datainterval); - } - if (min_datainterval == 0xff) { - hwc_debug(" --> get emtpy\n"); - it->empty = 1; - return -EINVAL; - } - pmin = 125 * (1 << min_datainterval); - changed = 0; - if (it->min < pmin) { - it->min = pmin; - it->openmin = 0; - changed = 1; - } - if (snd_interval_checkempty(it)) { - it->empty = 1; - return -EINVAL; - } - hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed); - return changed; -} - -/* - * If the device supports unusual bit rates, does the request meet these? - */ -static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, - struct snd_usb_substream *subs) -{ - struct audioformat *fp; - int count = 0, needs_knot = 0; - int err; - - list_for_each_entry(fp, &subs->fmt_list, list) { - if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) - return 0; - count += fp->nr_rates; - if (fp->rates & SNDRV_PCM_RATE_KNOT) - needs_knot = 1; - } - if (!needs_knot) - return 0; - - subs->rate_list.count = count; - subs->rate_list.list = kmalloc(sizeof(int) * count, GFP_KERNEL); - subs->rate_list.mask = 0; - count = 0; - list_for_each_entry(fp, &subs->fmt_list, list) { - int i; - for (i = 0; i < fp->nr_rates; i++) - subs->rate_list.list[count++] = fp->rate_table[i]; - } - err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, - &subs->rate_list); - if (err < 0) - return err; - - return 0; -} - - -/* - * set up the runtime hardware information. - */ - -static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs) -{ - struct list_head *p; - unsigned int pt, ptmin; - int param_period_time_if_needed; - int err; - - runtime->hw.formats = subs->formats; - - runtime->hw.rate_min = 0x7fffffff; - runtime->hw.rate_max = 0; - runtime->hw.channels_min = 256; - runtime->hw.channels_max = 0; - runtime->hw.rates = 0; - ptmin = UINT_MAX; - /* check min/max rates and channels */ - list_for_each(p, &subs->fmt_list) { - struct audioformat *fp; - fp = list_entry(p, struct audioformat, list); - runtime->hw.rates |= fp->rates; - if (runtime->hw.rate_min > fp->rate_min) - runtime->hw.rate_min = fp->rate_min; - if (runtime->hw.rate_max < fp->rate_max) - runtime->hw.rate_max = fp->rate_max; - if (runtime->hw.channels_min > fp->channels) - runtime->hw.channels_min = fp->channels; - if (runtime->hw.channels_max < fp->channels) - runtime->hw.channels_max = fp->channels; - if (fp->fmt_type == UAC_FORMAT_TYPE_II && fp->frame_size > 0) { - /* FIXME: there might be more than one audio formats... */ - runtime->hw.period_bytes_min = runtime->hw.period_bytes_max = - fp->frame_size; - } - pt = 125 * (1 << fp->datainterval); - ptmin = min(ptmin, pt); - } - - param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME; - if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH) - /* full speed devices have fixed data packet interval */ - ptmin = 1000; - if (ptmin == 1000) - /* if period time doesn't go below 1 ms, no rules needed */ - param_period_time_if_needed = -1; - snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, - ptmin, UINT_MAX); - - if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, - hw_rule_rate, subs, - SNDRV_PCM_HW_PARAM_FORMAT, - SNDRV_PCM_HW_PARAM_CHANNELS, - param_period_time_if_needed, - -1)) < 0) - return err; - if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, - hw_rule_channels, subs, - SNDRV_PCM_HW_PARAM_FORMAT, - SNDRV_PCM_HW_PARAM_RATE, - param_period_time_if_needed, - -1)) < 0) - return err; - if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, - hw_rule_format, subs, - SNDRV_PCM_HW_PARAM_RATE, - SNDRV_PCM_HW_PARAM_CHANNELS, - param_period_time_if_needed, - -1)) < 0) - return err; - if (param_period_time_if_needed >= 0) { - err = snd_pcm_hw_rule_add(runtime, 0, - SNDRV_PCM_HW_PARAM_PERIOD_TIME, - hw_rule_period_time, subs, - SNDRV_PCM_HW_PARAM_FORMAT, - SNDRV_PCM_HW_PARAM_CHANNELS, - SNDRV_PCM_HW_PARAM_RATE, - -1); - if (err < 0) - return err; - } - if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0) - return err; - return 0; -} - -static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction) -{ - struct snd_usb_stream *as = snd_pcm_substream_chip(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_usb_substream *subs = &as->substream[direction]; - - subs->interface = -1; - subs->format = 0; - runtime->hw = snd_usb_hardware; - runtime->private_data = subs; - subs->pcm_substream = substream; - return setup_hw_info(runtime, subs); -} - -static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) -{ - struct snd_usb_stream *as = snd_pcm_substream_chip(substream); - struct snd_usb_substream *subs = &as->substream[direction]; - - if (!as->chip->shutdown && subs->interface >= 0) { - usb_set_interface(subs->dev, subs->interface, 0); - subs->interface = -1; - } - subs->pcm_substream = NULL; - return 0; -} - -static int snd_usb_playback_open(struct snd_pcm_substream *substream) -{ - return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK); -} - -static int snd_usb_playback_close(struct snd_pcm_substream *substream) -{ - return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK); -} - -static int snd_usb_capture_open(struct snd_pcm_substream *substream) -{ - return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE); -} - -static int snd_usb_capture_close(struct snd_pcm_substream *substream) -{ - return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE); -} - -static struct snd_pcm_ops snd_usb_playback_ops = { - .open = snd_usb_playback_open, - .close = snd_usb_playback_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_usb_hw_params, - .hw_free = snd_usb_hw_free, - .prepare = snd_usb_pcm_prepare, - .trigger = snd_usb_pcm_playback_trigger, - .pointer = snd_usb_pcm_pointer, - .page = snd_pcm_lib_get_vmalloc_page, - .mmap = snd_pcm_lib_mmap_vmalloc, -}; - -static struct snd_pcm_ops snd_usb_capture_ops = { - .open = snd_usb_capture_open, - .close = snd_usb_capture_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_usb_hw_params, - .hw_free = snd_usb_hw_free, - .prepare = snd_usb_pcm_prepare, - .trigger = snd_usb_pcm_capture_trigger, - .pointer = snd_usb_pcm_pointer, - .page = snd_pcm_lib_get_vmalloc_page, - .mmap = snd_pcm_lib_mmap_vmalloc, -}; - - - -/* - * helper functions - */ - -/* - * combine bytes and get an integer value - */ -unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size) -{ - switch (size) { - case 1: return *bytes; - case 2: return combine_word(bytes); - case 3: return combine_triple(bytes); - case 4: return combine_quad(bytes); - default: return 0; - } -} - -/* - * parse descriptor buffer and return the pointer starting the given - * descriptor type. - */ -void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype) -{ - u8 *p, *end, *next; - - p = descstart; - end = p + desclen; - for (; p < end;) { - if (p[0] < 2) - return NULL; - next = p + p[0]; - if (next > end) - return NULL; - if (p[1] == dtype && (!after || (void *)p > after)) { - return p; - } - p = next; - } - return NULL; -} - -/* - * find a class-specified interface descriptor with the given subtype. - */ -void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype) -{ - unsigned char *p = after; - - while ((p = snd_usb_find_desc(buffer, buflen, p, - USB_DT_CS_INTERFACE)) != NULL) { - if (p[0] >= 3 && p[2] == dsubtype) - return p; - } - return NULL; -} - -/* - * Wrapper for usb_control_msg(). - * Allocates a temp buffer to prevent dmaing from/to the stack. - */ -int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, - __u8 requesttype, __u16 value, __u16 index, void *data, - __u16 size, int timeout) -{ - int err; - void *buf = NULL; - - if (size > 0) { - buf = kmemdup(data, size, GFP_KERNEL); - if (!buf) - return -ENOMEM; - } - err = usb_control_msg(dev, pipe, request, requesttype, - value, index, buf, size, timeout); - if (size > 0) { - memcpy(data, buf, size); - kfree(buf); - } - return err; -} - - -/* - * entry point for linux usb interface - */ - -static int usb_audio_probe(struct usb_interface *intf, - const struct usb_device_id *id); -static void usb_audio_disconnect(struct usb_interface *intf); - -#ifdef CONFIG_PM -static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message); -static int usb_audio_resume(struct usb_interface *intf); -#else -#define usb_audio_suspend NULL -#define usb_audio_resume NULL -#endif - -static struct usb_device_id usb_audio_ids [] = { -#include "usbquirks.h" - { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS), - .bInterfaceClass = USB_CLASS_AUDIO, - .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL }, - { } /* Terminating entry */ -}; - -MODULE_DEVICE_TABLE (usb, usb_audio_ids); - -static struct usb_driver usb_audio_driver = { - .name = "snd-usb-audio", - .probe = usb_audio_probe, - .disconnect = usb_audio_disconnect, - .suspend = usb_audio_suspend, - .resume = usb_audio_resume, - .id_table = usb_audio_ids, -}; - - -#if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS) - -/* - * proc interface for list the supported pcm formats - */ -static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) -{ - struct list_head *p; - static char *sync_types[4] = { - "NONE", "ASYNC", "ADAPTIVE", "SYNC" - }; - - list_for_each(p, &subs->fmt_list) { - struct audioformat *fp; - fp = list_entry(p, struct audioformat, list); - snd_iprintf(buffer, " Interface %d\n", fp->iface); - snd_iprintf(buffer, " Altset %d\n", fp->altsetting); - snd_iprintf(buffer, " Format: %s\n", - snd_pcm_format_name(fp->format)); - snd_iprintf(buffer, " Channels: %d\n", fp->channels); - snd_iprintf(buffer, " Endpoint: %d %s (%s)\n", - fp->endpoint & USB_ENDPOINT_NUMBER_MASK, - fp->endpoint & USB_DIR_IN ? "IN" : "OUT", - sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]); - if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) { - snd_iprintf(buffer, " Rates: %d - %d (continuous)\n", - fp->rate_min, fp->rate_max); - } else { - unsigned int i; - snd_iprintf(buffer, " Rates: "); - for (i = 0; i < fp->nr_rates; i++) { - if (i > 0) - snd_iprintf(buffer, ", "); - snd_iprintf(buffer, "%d", fp->rate_table[i]); - } - snd_iprintf(buffer, "\n"); - } - if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) - snd_iprintf(buffer, " Data packet interval: %d us\n", - 125 * (1 << fp->datainterval)); - // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize); - // snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes); - } -} - -static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) -{ - if (subs->running) { - unsigned int i; - snd_iprintf(buffer, " Status: Running\n"); - snd_iprintf(buffer, " Interface = %d\n", subs->interface); - snd_iprintf(buffer, " Altset = %d\n", subs->format); - snd_iprintf(buffer, " URBs = %d [ ", subs->nurbs); - for (i = 0; i < subs->nurbs; i++) - snd_iprintf(buffer, "%d ", subs->dataurb[i].packets); - snd_iprintf(buffer, "]\n"); - snd_iprintf(buffer, " Packet Size = %d\n", subs->curpacksize); - snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n", - snd_usb_get_speed(subs->dev) == USB_SPEED_FULL - ? get_full_speed_hz(subs->freqm) - : get_high_speed_hz(subs->freqm), - subs->freqm >> 16, subs->freqm & 0xffff); - } else { - snd_iprintf(buffer, " Status: Stop\n"); - } -} - -static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) -{ - struct snd_usb_stream *stream = entry->private_data; - - snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name); - - if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) { - snd_iprintf(buffer, "\nPlayback:\n"); - proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); - proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); - } - if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) { - snd_iprintf(buffer, "\nCapture:\n"); - proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); - proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); - } -} - -static void proc_pcm_format_add(struct snd_usb_stream *stream) -{ - struct snd_info_entry *entry; - char name[32]; - struct snd_card *card = stream->chip->card; - - sprintf(name, "stream%d", stream->pcm_index); - if (!snd_card_proc_new(card, name, &entry)) - snd_info_set_text_ops(entry, stream, proc_pcm_format_read); -} - -#else - -static inline void proc_pcm_format_add(struct snd_usb_stream *stream) -{ -} - -#endif - -/* - * initialize the substream instance. - */ - -static void init_substream(struct snd_usb_stream *as, int stream, struct audioformat *fp) -{ - struct snd_usb_substream *subs = &as->substream[stream]; - - INIT_LIST_HEAD(&subs->fmt_list); - spin_lock_init(&subs->lock); - - subs->stream = as; - subs->direction = stream; - subs->dev = as->chip->dev; - subs->txfr_quirk = as->chip->txfr_quirk; - if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) { - subs->ops = audio_urb_ops[stream]; - } else { - subs->ops = audio_urb_ops_high_speed[stream]; - switch (as->chip->usb_id) { - case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */ - case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */ - case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */ - subs->ops.retire_sync = retire_playback_sync_urb_hs_emu; - break; - } - } - snd_pcm_set_ops(as->pcm, stream, - stream == SNDRV_PCM_STREAM_PLAYBACK ? - &snd_usb_playback_ops : &snd_usb_capture_ops); - - list_add_tail(&fp->list, &subs->fmt_list); - subs->formats |= 1ULL << fp->format; - subs->endpoint = fp->endpoint; - subs->num_formats++; - subs->fmt_type = fp->fmt_type; -} - - -/* - * free a substream - */ -static void free_substream(struct snd_usb_substream *subs) -{ - struct list_head *p, *n; - - if (!subs->num_formats) - return; /* not initialized */ - list_for_each_safe(p, n, &subs->fmt_list) { - struct audioformat *fp = list_entry(p, struct audioformat, list); - kfree(fp->rate_table); - kfree(fp); - } - kfree(subs->rate_list.list); -} - - -/* - * free a usb stream instance - */ -static void snd_usb_audio_stream_free(struct snd_usb_stream *stream) -{ - free_substream(&stream->substream[0]); - free_substream(&stream->substream[1]); - list_del(&stream->list); - kfree(stream); -} - -static void snd_usb_audio_pcm_free(struct snd_pcm *pcm) -{ - struct snd_usb_stream *stream = pcm->private_data; - if (stream) { - stream->pcm = NULL; - snd_usb_audio_stream_free(stream); - } -} - - -/* - * add this endpoint to the chip instance. - * if a stream with the same endpoint already exists, append to it. - * if not, create a new pcm stream. - */ -static int add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp) -{ - struct list_head *p; - struct snd_usb_stream *as; - struct snd_usb_substream *subs; - struct snd_pcm *pcm; - int err; - - list_for_each(p, &chip->pcm_list) { - as = list_entry(p, struct snd_usb_stream, list); - if (as->fmt_type != fp->fmt_type) - continue; - subs = &as->substream[stream]; - if (!subs->endpoint) - continue; - if (subs->endpoint == fp->endpoint) { - list_add_tail(&fp->list, &subs->fmt_list); - subs->num_formats++; - subs->formats |= 1ULL << fp->format; - return 0; - } - } - /* look for an empty stream */ - list_for_each(p, &chip->pcm_list) { - as = list_entry(p, struct snd_usb_stream, list); - if (as->fmt_type != fp->fmt_type) - continue; - subs = &as->substream[stream]; - if (subs->endpoint) - continue; - err = snd_pcm_new_stream(as->pcm, stream, 1); - if (err < 0) - return err; - init_substream(as, stream, fp); - return 0; - } - - /* create a new pcm */ - as = kzalloc(sizeof(*as), GFP_KERNEL); - if (!as) - return -ENOMEM; - as->pcm_index = chip->pcm_devs; - as->chip = chip; - as->fmt_type = fp->fmt_type; - err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs, - stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0, - stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1, - &pcm); - if (err < 0) { - kfree(as); - return err; - } - as->pcm = pcm; - pcm->private_data = as; - pcm->private_free = snd_usb_audio_pcm_free; - pcm->info_flags = 0; - if (chip->pcm_devs > 0) - sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs); - else - strcpy(pcm->name, "USB Audio"); - - init_substream(as, stream, fp); - - list_add(&as->list, &chip->pcm_list); - chip->pcm_devs++; - - proc_pcm_format_add(as); - - return 0; -} - - -/* - * check if the device uses big-endian samples - */ -static int is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp) -{ - switch (chip->usb_id) { - case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */ - if (fp->endpoint & USB_DIR_IN) - return 1; - break; - case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ - if (device_setup[chip->index] == 0x00 || - fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3) - return 1; - } - return 0; -} - -/* - * parse the audio format type I descriptor - * and returns the corresponding pcm format - * - * @dev: usb device - * @fp: audioformat record - * @format: the format tag (wFormatTag) - * @fmt: the format type descriptor - */ -static int parse_audio_format_i_type(struct snd_usb_audio *chip, - struct audioformat *fp, - int format, void *_fmt, - int protocol) -{ - int pcm_format, i; - int sample_width, sample_bytes; - - switch (protocol) { - case UAC_VERSION_1: { - struct uac_format_type_i_discrete_descriptor *fmt = _fmt; - sample_width = fmt->bBitResolution; - sample_bytes = fmt->bSubframeSize; - break; - } - - case UAC_VERSION_2: { - struct uac_format_type_i_ext_descriptor *fmt = _fmt; - sample_width = fmt->bBitResolution; - sample_bytes = fmt->bSubslotSize; - - /* - * FIXME - * USB audio class v2 devices specify a bitmap of possible - * audio formats rather than one fix value. For now, we just - * pick one of them and report that as the only possible - * value for this setting. - * The bit allocation map is in fact compatible to the - * wFormatTag of the v1 AS streaming descriptors, which is why - * we can simply map the matrix. - */ - - for (i = 0; i < 5; i++) - if (format & (1UL << i)) { - format = i + 1; - break; - } - - break; - } - - default: - return -EINVAL; - } - - /* FIXME: correct endianess and sign? */ - pcm_format = -1; - - switch (format) { - case UAC_FORMAT_TYPE_I_UNDEFINED: /* some devices don't define this correctly... */ - snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n", - chip->dev->devnum, fp->iface, fp->altsetting); - /* fall-through */ - case UAC_FORMAT_TYPE_I_PCM: - if (sample_width > sample_bytes * 8) { - snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n", - chip->dev->devnum, fp->iface, fp->altsetting, - sample_width, sample_bytes); - } - /* check the format byte size */ - switch (sample_bytes) { - case 1: - pcm_format = SNDRV_PCM_FORMAT_S8; - break; - case 2: - if (is_big_endian_format(chip, fp)) - pcm_format = SNDRV_PCM_FORMAT_S16_BE; /* grrr, big endian!! */ - else - pcm_format = SNDRV_PCM_FORMAT_S16_LE; - break; - case 3: - if (is_big_endian_format(chip, fp)) - pcm_format = SNDRV_PCM_FORMAT_S24_3BE; /* grrr, big endian!! */ - else - pcm_format = SNDRV_PCM_FORMAT_S24_3LE; - break; - case 4: - pcm_format = SNDRV_PCM_FORMAT_S32_LE; - break; - default: - snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n", - chip->dev->devnum, fp->iface, fp->altsetting, - sample_width, sample_bytes); - break; - } - break; - case UAC_FORMAT_TYPE_I_PCM8: - pcm_format = SNDRV_PCM_FORMAT_U8; - - /* Dallas DS4201 workaround: it advertises U8 format, but really - supports S8. */ - if (chip->usb_id == USB_ID(0x04fa, 0x4201)) - pcm_format = SNDRV_PCM_FORMAT_S8; - break; - case UAC_FORMAT_TYPE_I_IEEE_FLOAT: - pcm_format = SNDRV_PCM_FORMAT_FLOAT_LE; - break; - case UAC_FORMAT_TYPE_I_ALAW: - pcm_format = SNDRV_PCM_FORMAT_A_LAW; - break; - case UAC_FORMAT_TYPE_I_MULAW: - pcm_format = SNDRV_PCM_FORMAT_MU_LAW; - break; - default: - snd_printk(KERN_INFO "%d:%u:%d : unsupported format type %d\n", - chip->dev->devnum, fp->iface, fp->altsetting, format); - break; - } - return pcm_format; -} - - -/* - * parse the format descriptor and stores the possible sample rates - * on the audioformat table (audio class v1). - * - * @dev: usb device - * @fp: audioformat record - * @fmt: the format descriptor - * @offset: the start offset of descriptor pointing the rate type - * (7 for type I and II, 8 for type II) - */ -static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audioformat *fp, - unsigned char *fmt, int offset) -{ - int nr_rates = fmt[offset]; - - if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) { - snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n", - chip->dev->devnum, fp->iface, fp->altsetting); - return -1; - } - - if (nr_rates) { - /* - * build the rate table and bitmap flags - */ - int r, idx; - - fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); - if (fp->rate_table == NULL) { - snd_printk(KERN_ERR "cannot malloc\n"); - return -1; - } - - fp->nr_rates = 0; - fp->rate_min = fp->rate_max = 0; - for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) { - unsigned int rate = combine_triple(&fmt[idx]); - if (!rate) - continue; - /* C-Media CM6501 mislabels its 96 kHz altsetting */ - if (rate == 48000 && nr_rates == 1 && - (chip->usb_id == USB_ID(0x0d8c, 0x0201) || - chip->usb_id == USB_ID(0x0d8c, 0x0102)) && - fp->altsetting == 5 && fp->maxpacksize == 392) - rate = 96000; - /* Creative VF0470 Live Cam reports 16 kHz instead of 8kHz */ - if (rate == 16000 && chip->usb_id == USB_ID(0x041e, 0x4068)) - rate = 8000; - fp->rate_table[fp->nr_rates] = rate; - if (!fp->rate_min || rate < fp->rate_min) - fp->rate_min = rate; - if (!fp->rate_max || rate > fp->rate_max) - fp->rate_max = rate; - fp->rates |= snd_pcm_rate_to_rate_bit(rate); - fp->nr_rates++; - } - if (!fp->nr_rates) { - hwc_debug("All rates were zero. Skipping format!\n"); - return -1; - } - } else { - /* continuous rates */ - fp->rates = SNDRV_PCM_RATE_CONTINUOUS; - fp->rate_min = combine_triple(&fmt[offset + 1]); - fp->rate_max = combine_triple(&fmt[offset + 4]); - } - return 0; -} - -/* - * parse the format descriptor and stores the possible sample rates - * on the audioformat table (audio class v2). - */ -static int parse_audio_format_rates_v2(struct snd_usb_audio *chip, - struct audioformat *fp, - struct usb_host_interface *iface) -{ - struct usb_device *dev = chip->dev; - unsigned char tmp[2], *data; - int i, nr_rates, data_size, ret = 0; - - /* get the number of sample rates first by only fetching 2 bytes */ - ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, - USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, - 0x0100, chip->clock_id << 8, tmp, sizeof(tmp), 1000); - - if (ret < 0) { - snd_printk(KERN_ERR "unable to retrieve number of sample rates\n"); - goto err; - } - - nr_rates = (tmp[1] << 8) | tmp[0]; - data_size = 2 + 12 * nr_rates; - data = kzalloc(data_size, GFP_KERNEL); - if (!data) { - ret = -ENOMEM; - goto err; - } - - /* now get the full information */ - ret = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_RANGE, - USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, - 0x0100, chip->clock_id << 8, data, data_size, 1000); - - if (ret < 0) { - snd_printk(KERN_ERR "unable to retrieve sample rate range\n"); - ret = -EINVAL; - goto err_free; - } - - fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); - if (!fp->rate_table) { - ret = -ENOMEM; - goto err_free; - } - - fp->nr_rates = 0; - fp->rate_min = fp->rate_max = 0; - - for (i = 0; i < nr_rates; i++) { - int rate = combine_quad(&data[2 + 12 * i]); - - fp->rate_table[fp->nr_rates] = rate; - if (!fp->rate_min || rate < fp->rate_min) - fp->rate_min = rate; - if (!fp->rate_max || rate > fp->rate_max) - fp->rate_max = rate; - fp->rates |= snd_pcm_rate_to_rate_bit(rate); - fp->nr_rates++; - } - -err_free: - kfree(data); -err: - return ret; -} - -/* - * parse the format type I and III descriptors - */ -static int parse_audio_format_i(struct snd_usb_audio *chip, - struct audioformat *fp, - int format, void *_fmt, - struct usb_host_interface *iface) -{ - struct usb_interface_descriptor *altsd = get_iface_desc(iface); - struct uac_format_type_i_discrete_descriptor *fmt = _fmt; - int protocol = altsd->bInterfaceProtocol; - int pcm_format, ret; - - if (fmt->bFormatType == UAC_FORMAT_TYPE_III) { - /* FIXME: the format type is really IECxxx - * but we give normal PCM format to get the existing - * apps working... - */ - switch (chip->usb_id) { - - case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ - if (device_setup[chip->index] == 0x00 && - fp->altsetting == 6) - pcm_format = SNDRV_PCM_FORMAT_S16_BE; - else - pcm_format = SNDRV_PCM_FORMAT_S16_LE; - break; - default: - pcm_format = SNDRV_PCM_FORMAT_S16_LE; - } - } else { - pcm_format = parse_audio_format_i_type(chip, fp, format, fmt, protocol); - if (pcm_format < 0) - return -1; - } - - fp->format = pcm_format; - - /* gather possible sample rates */ - /* audio class v1 reports possible sample rates as part of the - * proprietary class specific descriptor. - * audio class v2 uses class specific EP0 range requests for that. - */ - switch (protocol) { - case UAC_VERSION_1: - fp->channels = fmt->bNrChannels; - ret = parse_audio_format_rates_v1(chip, fp, _fmt, 7); - break; - case UAC_VERSION_2: - /* fp->channels is already set in this case */ - ret = parse_audio_format_rates_v2(chip, fp, iface); - break; - } - - if (fp->channels < 1) { - snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n", - chip->dev->devnum, fp->iface, fp->altsetting, fp->channels); - return -1; - } - - return ret; -} - -/* - * parse the format type II descriptor - */ -static int parse_audio_format_ii(struct snd_usb_audio *chip, - struct audioformat *fp, - int format, void *_fmt, - struct usb_host_interface *iface) -{ - int brate, framesize, ret; - struct usb_interface_descriptor *altsd = get_iface_desc(iface); - int protocol = altsd->bInterfaceProtocol; - - switch (format) { - case UAC_FORMAT_TYPE_II_AC3: - /* FIXME: there is no AC3 format defined yet */ - // fp->format = SNDRV_PCM_FORMAT_AC3; - fp->format = SNDRV_PCM_FORMAT_U8; /* temporarily hack to receive byte streams */ - break; - case UAC_FORMAT_TYPE_II_MPEG: - fp->format = SNDRV_PCM_FORMAT_MPEG; - break; - default: - snd_printd(KERN_INFO "%d:%u:%d : unknown format tag %#x is detected. processed as MPEG.\n", - chip->dev->devnum, fp->iface, fp->altsetting, format); - fp->format = SNDRV_PCM_FORMAT_MPEG; - break; - } - - fp->channels = 1; - - switch (protocol) { - case UAC_VERSION_1: { - struct uac_format_type_ii_discrete_descriptor *fmt = _fmt; - brate = le16_to_cpu(fmt->wMaxBitRate); - framesize = le16_to_cpu(fmt->wSamplesPerFrame); - snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); - fp->frame_size = framesize; - ret = parse_audio_format_rates_v1(chip, fp, _fmt, 8); /* fmt[8..] sample rates */ - break; - } - case UAC_VERSION_2: { - struct uac_format_type_ii_ext_descriptor *fmt = _fmt; - brate = le16_to_cpu(fmt->wMaxBitRate); - framesize = le16_to_cpu(fmt->wSamplesPerFrame); - snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize); - fp->frame_size = framesize; - ret = parse_audio_format_rates_v2(chip, fp, iface); - break; - } - } - - return ret; -} - -static int parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp, - int format, unsigned char *fmt, int stream, - struct usb_host_interface *iface) -{ - int err; - - switch (fmt[3]) { - case UAC_FORMAT_TYPE_I: - case UAC_FORMAT_TYPE_III: - err = parse_audio_format_i(chip, fp, format, fmt, iface); - break; - case UAC_FORMAT_TYPE_II: - err = parse_audio_format_ii(chip, fp, format, fmt, iface); - break; - default: - snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n", - chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]); - return -1; - } - fp->fmt_type = fmt[3]; - if (err < 0) - return err; -#if 1 - /* FIXME: temporary hack for extigy/audigy 2 nx/zs */ - /* extigy apparently supports sample rates other than 48k - * but not in ordinary way. so we enable only 48k atm. - */ - if (chip->usb_id == USB_ID(0x041e, 0x3000) || - chip->usb_id == USB_ID(0x041e, 0x3020) || - chip->usb_id == USB_ID(0x041e, 0x3061)) { - if (fmt[3] == UAC_FORMAT_TYPE_I && - fp->rates != SNDRV_PCM_RATE_48000 && - fp->rates != SNDRV_PCM_RATE_96000) - return -1; - } -#endif - return 0; -} - -static unsigned char parse_datainterval(struct snd_usb_audio *chip, - struct usb_host_interface *alts) -{ - if (snd_usb_get_speed(chip->dev) == USB_SPEED_HIGH && - get_endpoint(alts, 0)->bInterval >= 1 && - get_endpoint(alts, 0)->bInterval <= 4) - return get_endpoint(alts, 0)->bInterval - 1; - else - return 0; -} - -static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip, - int iface, int altno); -static int parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no) -{ - struct usb_device *dev; - struct usb_interface *iface; - struct usb_host_interface *alts; - struct usb_interface_descriptor *altsd; - int i, altno, err, stream; - int format = 0, num_channels = 0; - struct audioformat *fp = NULL; - unsigned char *fmt, *csep; - int num, protocol; - - dev = chip->dev; - - /* parse the interface's altsettings */ - iface = usb_ifnum_to_if(dev, iface_no); - - num = iface->num_altsetting; - - /* - * Dallas DS4201 workaround: It presents 5 altsettings, but the last - * one misses syncpipe, and does not produce any sound. - */ - if (chip->usb_id == USB_ID(0x04fa, 0x4201)) - num = 4; - - for (i = 0; i < num; i++) { - alts = &iface->altsetting[i]; - altsd = get_iface_desc(alts); - protocol = altsd->bInterfaceProtocol; - /* skip invalid one */ - if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && - altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || - (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING && - altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) || - altsd->bNumEndpoints < 1 || - le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0) - continue; - /* must be isochronous */ - if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != - USB_ENDPOINT_XFER_ISOC) - continue; - /* check direction */ - stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ? - SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; - altno = altsd->bAlternateSetting; - - /* audiophile usb: skip altsets incompatible with device_setup - */ - if (chip->usb_id == USB_ID(0x0763, 0x2003) && - audiophile_skip_setting_quirk(chip, iface_no, altno)) - continue; - - /* get audio formats */ - switch (protocol) { - case UAC_VERSION_1: { - struct uac_as_header_descriptor_v1 *as = - snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL); - - if (!as) { - snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n", - dev->devnum, iface_no, altno); - continue; - } - - if (as->bLength < sizeof(*as)) { - snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n", - dev->devnum, iface_no, altno); - continue; - } - - format = le16_to_cpu(as->wFormatTag); /* remember the format value */ - break; - } - - case UAC_VERSION_2: { - struct uac_as_header_descriptor_v2 *as = - snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_AS_GENERAL); - - if (!as) { - snd_printk(KERN_ERR "%d:%u:%d : UAC_AS_GENERAL descriptor not found\n", - dev->devnum, iface_no, altno); - continue; - } - - if (as->bLength < sizeof(*as)) { - snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_AS_GENERAL desc\n", - dev->devnum, iface_no, altno); - continue; - } - - num_channels = as->bNrChannels; - format = le32_to_cpu(as->bmFormats); - - break; - } - - default: - snd_printk(KERN_ERR "%d:%u:%d : unknown interface protocol %04x\n", - dev->devnum, iface_no, altno, protocol); - continue; - } - - /* get format type */ - fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, UAC_FORMAT_TYPE); - if (!fmt) { - snd_printk(KERN_ERR "%d:%u:%d : no UAC_FORMAT_TYPE desc\n", - dev->devnum, iface_no, altno); - continue; - } - if (((protocol == UAC_VERSION_1) && (fmt[0] < 8)) || - ((protocol == UAC_VERSION_2) && (fmt[0] != 6))) { - snd_printk(KERN_ERR "%d:%u:%d : invalid UAC_FORMAT_TYPE desc\n", - dev->devnum, iface_no, altno); - continue; - } - - /* - * Blue Microphones workaround: The last altsetting is identical - * with the previous one, except for a larger packet size, but - * is actually a mislabeled two-channel setting; ignore it. - */ - if (fmt[4] == 1 && fmt[5] == 2 && altno == 2 && num == 3 && - fp && fp->altsetting == 1 && fp->channels == 1 && - fp->format == SNDRV_PCM_FORMAT_S16_LE && - protocol == UAC_VERSION_1 && - le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == - fp->maxpacksize * 2) - continue; - - csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT); - /* Creamware Noah has this descriptor after the 2nd endpoint */ - if (!csep && altsd->bNumEndpoints >= 2) - csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT); - if (!csep || csep[0] < 7 || csep[2] != UAC_EP_GENERAL) { - snd_printk(KERN_WARNING "%d:%u:%d : no or invalid" - " class specific endpoint descriptor\n", - dev->devnum, iface_no, altno); - csep = NULL; - } - - fp = kzalloc(sizeof(*fp), GFP_KERNEL); - if (! fp) { - snd_printk(KERN_ERR "cannot malloc\n"); - return -ENOMEM; - } - - fp->iface = iface_no; - fp->altsetting = altno; - fp->altset_idx = i; - fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; - fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; - fp->datainterval = parse_datainterval(chip, alts); - fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); - /* num_channels is only set for v2 interfaces */ - fp->channels = num_channels; - if (snd_usb_get_speed(dev) == USB_SPEED_HIGH) - fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1) - * (fp->maxpacksize & 0x7ff); - fp->attributes = csep ? csep[3] : 0; - - /* some quirks for attributes here */ - - switch (chip->usb_id) { - case USB_ID(0x0a92, 0x0053): /* AudioTrak Optoplay */ - /* Optoplay sets the sample rate attribute although - * it seems not supporting it in fact. - */ - fp->attributes &= ~UAC_EP_CS_ATTR_SAMPLE_RATE; - break; - case USB_ID(0x041e, 0x3020): /* Creative SB Audigy 2 NX */ - case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */ - /* doesn't set the sample rate attribute, but supports it */ - fp->attributes |= UAC_EP_CS_ATTR_SAMPLE_RATE; - break; - case USB_ID(0x047f, 0x0ca1): /* plantronics headset */ - case USB_ID(0x077d, 0x07af): /* Griffin iMic (note that there is - an older model 77d:223) */ - /* - * plantronics headset and Griffin iMic have set adaptive-in - * although it's really not... - */ - fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE; - if (stream == SNDRV_PCM_STREAM_PLAYBACK) - fp->ep_attr |= USB_ENDPOINT_SYNC_ADAPTIVE; - else - fp->ep_attr |= USB_ENDPOINT_SYNC_SYNC; - break; - } - - /* ok, let's parse further... */ - if (parse_audio_format(chip, fp, format, fmt, stream, alts) < 0) { - kfree(fp->rate_table); - kfree(fp); - continue; - } - - snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint %#x\n", dev->devnum, iface_no, altno, fp->endpoint); - err = add_audio_endpoint(chip, stream, fp); - if (err < 0) { - kfree(fp->rate_table); - kfree(fp); - return err; - } - /* try to set the interface... */ - usb_set_interface(chip->dev, iface_no, altno); - init_usb_pitch(chip->dev, iface_no, alts, fp); - init_usb_sample_rate(chip->dev, iface_no, alts, fp, fp->rate_max); - } - return 0; -} - - -/* - * disconnect streams - * called from snd_usb_audio_disconnect() - */ -static void snd_usb_stream_disconnect(struct list_head *head) -{ - int idx; - struct snd_usb_stream *as; - struct snd_usb_substream *subs; - - as = list_entry(head, struct snd_usb_stream, list); - for (idx = 0; idx < 2; idx++) { - subs = &as->substream[idx]; - if (!subs->num_formats) - return; - release_substream_urbs(subs, 1); - subs->interface = -1; - } -} - -static int snd_usb_create_stream(struct snd_usb_audio *chip, int ctrlif, int interface) -{ - struct usb_device *dev = chip->dev; - struct usb_host_interface *alts; - struct usb_interface_descriptor *altsd; - struct usb_interface *iface = usb_ifnum_to_if(dev, interface); - - if (!iface) { - snd_printk(KERN_ERR "%d:%u:%d : does not exist\n", - dev->devnum, ctrlif, interface); - return -EINVAL; - } - - if (usb_interface_claimed(iface)) { - snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n", - dev->devnum, ctrlif, interface); - return -EINVAL; - } - - alts = &iface->altsetting[0]; - altsd = get_iface_desc(alts); - if ((altsd->bInterfaceClass == USB_CLASS_AUDIO || - altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) && - altsd->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING) { - int err = snd_usbmidi_create(chip->card, iface, - &chip->midi_list, NULL); - if (err < 0) { - snd_printk(KERN_ERR "%d:%u:%d: cannot create sequencer device\n", - dev->devnum, ctrlif, interface); - return -EINVAL; - } - usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); - - return 0; - } - - if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && - altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || - altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING) { - snd_printdd(KERN_ERR "%d:%u:%d: skipping non-supported interface %d\n", - dev->devnum, ctrlif, interface, altsd->bInterfaceClass); - /* skip non-supported classes */ - return -EINVAL; - } - - if (snd_usb_get_speed(dev) == USB_SPEED_LOW) { - snd_printk(KERN_ERR "low speed audio streaming not supported\n"); - return -EINVAL; - } - - if (! parse_audio_endpoints(chip, interface)) { - usb_set_interface(dev, interface, 0); /* reset the current interface */ - usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); - return -EINVAL; - } - - return 0; -} - -/* - * parse audio control descriptor and create pcm/midi streams - */ -static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif) -{ - struct usb_device *dev = chip->dev; - struct usb_host_interface *host_iface; - struct usb_interface_descriptor *altsd; - void *control_header; - int i, protocol; - - /* find audiocontrol interface */ - host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0]; - control_header = snd_usb_find_csint_desc(host_iface->extra, - host_iface->extralen, - NULL, UAC_HEADER); - altsd = get_iface_desc(host_iface); - protocol = altsd->bInterfaceProtocol; - - if (!control_header) { - snd_printk(KERN_ERR "cannot find UAC_HEADER\n"); - return -EINVAL; - } - - switch (protocol) { - case UAC_VERSION_1: { - struct uac_ac_header_descriptor_v1 *h1 = control_header; - - if (!h1->bInCollection) { - snd_printk(KERN_INFO "skipping empty audio interface (v1)\n"); - return -EINVAL; - } - - if (h1->bLength < sizeof(*h1) + h1->bInCollection) { - snd_printk(KERN_ERR "invalid UAC_HEADER (v1)\n"); - return -EINVAL; - } - - for (i = 0; i < h1->bInCollection; i++) - snd_usb_create_stream(chip, ctrlif, h1->baInterfaceNr[i]); - - break; - } - - case UAC_VERSION_2: { - struct uac_clock_source_descriptor *cs; - struct usb_interface_assoc_descriptor *assoc = - usb_ifnum_to_if(dev, ctrlif)->intf_assoc; - - if (!assoc) { - snd_printk(KERN_ERR "Audio class v2 interfaces need an interface association\n"); - return -EINVAL; - } - - /* FIXME: for now, we expect there is at least one clock source - * descriptor and we always take the first one. - * We should properly support devices with multiple clock sources, - * clock selectors and sample rate conversion units. */ - - cs = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen, - NULL, UAC_CLOCK_SOURCE); - - if (!cs) { - snd_printk(KERN_ERR "CLOCK_SOURCE descriptor not found\n"); - return -EINVAL; - } - - chip->clock_id = cs->bClockID; - - for (i = 0; i < assoc->bInterfaceCount; i++) { - int intf = assoc->bFirstInterface + i; - - if (intf != ctrlif) - snd_usb_create_stream(chip, ctrlif, intf); - } - - break; - } - - default: - snd_printk(KERN_ERR "unknown protocol version 0x%02x\n", protocol); - return -EINVAL; - } - - return 0; -} - -/* - * create a stream for an endpoint/altsetting without proper descriptors - */ -static int create_fixed_stream_quirk(struct snd_usb_audio *chip, - struct usb_interface *iface, - const struct snd_usb_audio_quirk *quirk) -{ - struct audioformat *fp; - struct usb_host_interface *alts; - int stream, err; - unsigned *rate_table = NULL; - - fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL); - if (! fp) { - snd_printk(KERN_ERR "cannot memdup\n"); - return -ENOMEM; - } - if (fp->nr_rates > 0) { - rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL); - if (!rate_table) { - kfree(fp); - return -ENOMEM; - } - memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates); - fp->rate_table = rate_table; - } - - stream = (fp->endpoint & USB_DIR_IN) - ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; - err = add_audio_endpoint(chip, stream, fp); - if (err < 0) { - kfree(fp); - kfree(rate_table); - return err; - } - if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber || - fp->altset_idx >= iface->num_altsetting) { - kfree(fp); - kfree(rate_table); - return -EINVAL; - } - alts = &iface->altsetting[fp->altset_idx]; - fp->datainterval = parse_datainterval(chip, alts); - fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); - usb_set_interface(chip->dev, fp->iface, 0); - init_usb_pitch(chip->dev, fp->iface, alts, fp); - init_usb_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max); - return 0; -} - -/* - * create a stream for an interface with proper descriptors - */ -static int create_standard_audio_quirk(struct snd_usb_audio *chip, - struct usb_interface *iface, - const struct snd_usb_audio_quirk *quirk) -{ - struct usb_host_interface *alts; - struct usb_interface_descriptor *altsd; - int err; - - alts = &iface->altsetting[0]; - altsd = get_iface_desc(alts); - err = parse_audio_endpoints(chip, altsd->bInterfaceNumber); - if (err < 0) { - snd_printk(KERN_ERR "cannot setup if %d: error %d\n", - altsd->bInterfaceNumber, err); - return err; - } - /* reset the current interface */ - usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0); - return 0; -} - -/* - * Create a stream for an Edirol UA-700/UA-25/UA-4FX interface. - * The only way to detect the sample rate is by looking at wMaxPacketSize. - */ -static int create_uaxx_quirk(struct snd_usb_audio *chip, - struct usb_interface *iface, - const struct snd_usb_audio_quirk *quirk) -{ - static const struct audioformat ua_format = { - .format = SNDRV_PCM_FORMAT_S24_3LE, - .channels = 2, - .fmt_type = UAC_FORMAT_TYPE_I, - .altsetting = 1, - .altset_idx = 1, - .rates = SNDRV_PCM_RATE_CONTINUOUS, - }; - struct usb_host_interface *alts; - struct usb_interface_descriptor *altsd; - struct audioformat *fp; - int stream, err; - - /* both PCM and MIDI interfaces have 2 or more altsettings */ - if (iface->num_altsetting < 2) - return -ENXIO; - alts = &iface->altsetting[1]; - altsd = get_iface_desc(alts); - - if (altsd->bNumEndpoints == 2) { - static const struct snd_usb_midi_endpoint_info ua700_ep = { - .out_cables = 0x0003, - .in_cables = 0x0003 - }; - static const struct snd_usb_audio_quirk ua700_quirk = { - .type = QUIRK_MIDI_FIXED_ENDPOINT, - .data = &ua700_ep - }; - static const struct snd_usb_midi_endpoint_info uaxx_ep = { - .out_cables = 0x0001, - .in_cables = 0x0001 - }; - static const struct snd_usb_audio_quirk uaxx_quirk = { - .type = QUIRK_MIDI_FIXED_ENDPOINT, - .data = &uaxx_ep - }; - const struct snd_usb_audio_quirk *quirk = - chip->usb_id == USB_ID(0x0582, 0x002b) - ? &ua700_quirk : &uaxx_quirk; - return snd_usbmidi_create(chip->card, iface, - &chip->midi_list, quirk); - } - - if (altsd->bNumEndpoints != 1) - return -ENXIO; - - fp = kmalloc(sizeof(*fp), GFP_KERNEL); - if (!fp) - return -ENOMEM; - memcpy(fp, &ua_format, sizeof(*fp)); - - fp->iface = altsd->bInterfaceNumber; - fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; - fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; - fp->datainterval = 0; - fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); - - switch (fp->maxpacksize) { - case 0x120: - fp->rate_max = fp->rate_min = 44100; - break; - case 0x138: - case 0x140: - fp->rate_max = fp->rate_min = 48000; - break; - case 0x258: - case 0x260: - fp->rate_max = fp->rate_min = 96000; - break; - default: - snd_printk(KERN_ERR "unknown sample rate\n"); - kfree(fp); - return -ENXIO; - } - - stream = (fp->endpoint & USB_DIR_IN) - ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; - err = add_audio_endpoint(chip, stream, fp); - if (err < 0) { - kfree(fp); - return err; - } - usb_set_interface(chip->dev, fp->iface, 0); - return 0; -} - -static int snd_usb_create_quirk(struct snd_usb_audio *chip, - struct usb_interface *iface, - const struct snd_usb_audio_quirk *quirk); - -/* - * handle the quirks for the contained interfaces - */ -static int create_composite_quirk(struct snd_usb_audio *chip, - struct usb_interface *iface, - const struct snd_usb_audio_quirk *quirk) -{ - int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber; - int err; - - for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) { - iface = usb_ifnum_to_if(chip->dev, quirk->ifnum); - if (!iface) - continue; - if (quirk->ifnum != probed_ifnum && - usb_interface_claimed(iface)) - continue; - err = snd_usb_create_quirk(chip, iface, quirk); - if (err < 0) - return err; - if (quirk->ifnum != probed_ifnum) - usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L); - } - return 0; -} - -static int ignore_interface_quirk(struct snd_usb_audio *chip, - struct usb_interface *iface, - const struct snd_usb_audio_quirk *quirk) -{ - return 0; -} - -/* - * Allow alignment on audio sub-slot (channel samples) rather than - * on audio slots (audio frames) - */ -static int create_align_transfer_quirk(struct snd_usb_audio *chip, - struct usb_interface *iface, - const struct snd_usb_audio_quirk *quirk) -{ - chip->txfr_quirk = 1; - return 1; /* Continue with creating streams and mixer */ -} - - -/* - * boot quirks - */ - -#define EXTIGY_FIRMWARE_SIZE_OLD 794 -#define EXTIGY_FIRMWARE_SIZE_NEW 483 - -static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf) -{ - struct usb_host_config *config = dev->actconfig; - int err; - - if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD || - le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) { - snd_printdd("sending Extigy boot sequence...\n"); - /* Send message to force it to reconnect with full interface. */ - err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0), - 0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000); - if (err < 0) snd_printdd("error sending boot message: %d\n", err); - err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, - &dev->descriptor, sizeof(dev->descriptor)); - config = dev->actconfig; - if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err); - err = usb_reset_configuration(dev); - if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err); - snd_printdd("extigy_boot: new boot length = %d\n", - le16_to_cpu(get_cfg_desc(config)->wTotalLength)); - return -ENODEV; /* quit this anyway */ - } - return 0; -} - -static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev) -{ - u8 buf = 1; - - snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a, - USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER, - 0, 0, &buf, 1, 1000); - if (buf == 0) { - snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29, - USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER, - 1, 2000, NULL, 0, 1000); - return -ENODEV; - } - return 0; -} - -/* - * C-Media CM106/CM106+ have four 16-bit internal registers that are nicely - * documented in the device's data sheet. - */ -static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value) -{ - u8 buf[4]; - buf[0] = 0x20; - buf[1] = value & 0xff; - buf[2] = (value >> 8) & 0xff; - buf[3] = reg; - return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION, - USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT, - 0, 0, &buf, 4, 1000); -} - -static int snd_usb_cm106_boot_quirk(struct usb_device *dev) -{ - /* - * Enable line-out driver mode, set headphone source to front - * channels, enable stereo mic. - */ - return snd_usb_cm106_write_int_reg(dev, 2, 0x8004); -} - -/* - * C-Media CM6206 is based on CM106 with two additional - * registers that are not documented in the data sheet. - * Values here are chosen based on sniffing USB traffic - * under Windows. - */ -static int snd_usb_cm6206_boot_quirk(struct usb_device *dev) -{ - int err, reg; - int val[] = {0x200c, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000}; - - for (reg = 0; reg < ARRAY_SIZE(val); reg++) { - err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]); - if (err < 0) - return err; - } - - return err; -} - -/* - * This call will put the synth in "USB send" mode, i.e it will send MIDI - * messages through USB (this is disabled at startup). The synth will - * acknowledge by sending a sysex on endpoint 0x85 and by displaying a USB - * sign on its LCD. Values here are chosen based on sniffing USB traffic - * under Windows. - */ -static int snd_usb_accessmusic_boot_quirk(struct usb_device *dev) -{ - int err, actual_length; - - /* "midi send" enable */ - static const u8 seq[] = { 0x4e, 0x73, 0x52, 0x01 }; - - void *buf = kmemdup(seq, ARRAY_SIZE(seq), GFP_KERNEL); - if (!buf) - return -ENOMEM; - err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x05), buf, - ARRAY_SIZE(seq), &actual_length, 1000); - kfree(buf); - if (err < 0) - return err; - - return 0; -} - -/* - * Setup quirks - */ -#define AUDIOPHILE_SET 0x01 /* if set, parse device_setup */ -#define AUDIOPHILE_SET_DTS 0x02 /* if set, enable DTS Digital Output */ -#define AUDIOPHILE_SET_96K 0x04 /* 48-96KHz rate if set, 8-48KHz otherwise */ -#define AUDIOPHILE_SET_24B 0x08 /* 24bits sample if set, 16bits otherwise */ -#define AUDIOPHILE_SET_DI 0x10 /* if set, enable Digital Input */ -#define AUDIOPHILE_SET_MASK 0x1F /* bit mask for setup value */ -#define AUDIOPHILE_SET_24B_48K_DI 0x19 /* value for 24bits+48KHz+Digital Input */ -#define AUDIOPHILE_SET_24B_48K_NOTDI 0x09 /* value for 24bits+48KHz+No Digital Input */ -#define AUDIOPHILE_SET_16B_48K_DI 0x11 /* value for 16bits+48KHz+Digital Input */ -#define AUDIOPHILE_SET_16B_48K_NOTDI 0x01 /* value for 16bits+48KHz+No Digital Input */ - -static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip, - int iface, int altno) -{ - /* Reset ALL ifaces to 0 altsetting. - * Call it for every possible altsetting of every interface. - */ - usb_set_interface(chip->dev, iface, 0); - - if (device_setup[chip->index] & AUDIOPHILE_SET) { - if ((device_setup[chip->index] & AUDIOPHILE_SET_DTS) - && altno != 6) - return 1; /* skip this altsetting */ - if ((device_setup[chip->index] & AUDIOPHILE_SET_96K) - && altno != 1) - return 1; /* skip this altsetting */ - if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == - AUDIOPHILE_SET_24B_48K_DI && altno != 2) - return 1; /* skip this altsetting */ - if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == - AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3) - return 1; /* skip this altsetting */ - if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == - AUDIOPHILE_SET_16B_48K_DI && altno != 4) - return 1; /* skip this altsetting */ - if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) == - AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5) - return 1; /* skip this altsetting */ - } - return 0; /* keep this altsetting */ -} - -static int create_any_midi_quirk(struct snd_usb_audio *chip, - struct usb_interface *intf, - const struct snd_usb_audio_quirk *quirk) -{ - return snd_usbmidi_create(chip->card, intf, &chip->midi_list, quirk); -} - -/* - * audio-interface quirks - * - * returns zero if no standard audio/MIDI parsing is needed. - * returns a postive value if standard audio/midi interfaces are parsed - * after this. - * returns a negative value at error. - */ -static int snd_usb_create_quirk(struct snd_usb_audio *chip, - struct usb_interface *iface, - const struct snd_usb_audio_quirk *quirk) -{ - typedef int (*quirk_func_t)(struct snd_usb_audio *, struct usb_interface *, - const struct snd_usb_audio_quirk *); - static const quirk_func_t quirk_funcs[] = { - [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk, - [QUIRK_COMPOSITE] = create_composite_quirk, - [QUIRK_MIDI_STANDARD_INTERFACE] = create_any_midi_quirk, - [QUIRK_MIDI_FIXED_ENDPOINT] = create_any_midi_quirk, - [QUIRK_MIDI_YAMAHA] = create_any_midi_quirk, - [QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk, - [QUIRK_MIDI_NOVATION] = create_any_midi_quirk, - [QUIRK_MIDI_FASTLANE] = create_any_midi_quirk, - [QUIRK_MIDI_EMAGIC] = create_any_midi_quirk, - [QUIRK_MIDI_CME] = create_any_midi_quirk, - [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk, - [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk, - [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk, - [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk - }; - - if (quirk->type < QUIRK_TYPE_COUNT) { - return quirk_funcs[quirk->type](chip, iface, quirk); - } else { - snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type); - return -ENXIO; - } -} - - -/* - * common proc files to show the usb device info - */ -static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) -{ - struct snd_usb_audio *chip = entry->private_data; - if (!chip->shutdown) - snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum); -} - -static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) -{ - struct snd_usb_audio *chip = entry->private_data; - if (!chip->shutdown) - snd_iprintf(buffer, "%04x:%04x\n", - USB_ID_VENDOR(chip->usb_id), - USB_ID_PRODUCT(chip->usb_id)); -} - -static void snd_usb_audio_create_proc(struct snd_usb_audio *chip) -{ - struct snd_info_entry *entry; - if (!snd_card_proc_new(chip->card, "usbbus", &entry)) - snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read); - if (!snd_card_proc_new(chip->card, "usbid", &entry)) - snd_info_set_text_ops(entry, chip, proc_audio_usbid_read); -} - -/* - * free the chip instance - * - * here we have to do not much, since pcm and controls are already freed - * - */ - -static int snd_usb_audio_free(struct snd_usb_audio *chip) -{ - kfree(chip); - return 0; -} - -static int snd_usb_audio_dev_free(struct snd_device *device) -{ - struct snd_usb_audio *chip = device->device_data; - return snd_usb_audio_free(chip); -} - - -/* - * create a chip instance and set its names. - */ -static int snd_usb_audio_create(struct usb_device *dev, int idx, - const struct snd_usb_audio_quirk *quirk, - struct snd_usb_audio **rchip) -{ - struct snd_card *card; - struct snd_usb_audio *chip; - int err, len; - char component[14]; - static struct snd_device_ops ops = { - .dev_free = snd_usb_audio_dev_free, - }; - - *rchip = NULL; - - if (snd_usb_get_speed(dev) != USB_SPEED_LOW && - snd_usb_get_speed(dev) != USB_SPEED_FULL && - snd_usb_get_speed(dev) != USB_SPEED_HIGH) { - snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev)); - return -ENXIO; - } - - err = snd_card_create(index[idx], id[idx], THIS_MODULE, 0, &card); - if (err < 0) { - snd_printk(KERN_ERR "cannot create card instance %d\n", idx); - return err; - } - - chip = kzalloc(sizeof(*chip), GFP_KERNEL); - if (! chip) { - snd_card_free(card); - return -ENOMEM; - } - - chip->index = idx; - chip->dev = dev; - chip->card = card; - chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), - le16_to_cpu(dev->descriptor.idProduct)); - INIT_LIST_HEAD(&chip->pcm_list); - INIT_LIST_HEAD(&chip->midi_list); - INIT_LIST_HEAD(&chip->mixer_list); - - if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { - snd_usb_audio_free(chip); - snd_card_free(card); - return err; - } - - strcpy(card->driver, "USB-Audio"); - sprintf(component, "USB%04x:%04x", - USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id)); - snd_component_add(card, component); - - /* retrieve the device string as shortname */ - if (quirk && quirk->product_name) { - strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname)); - } else { - if (!dev->descriptor.iProduct || - usb_string(dev, dev->descriptor.iProduct, - card->shortname, sizeof(card->shortname)) <= 0) { - /* no name available from anywhere, so use ID */ - sprintf(card->shortname, "USB Device %#04x:%#04x", - USB_ID_VENDOR(chip->usb_id), - USB_ID_PRODUCT(chip->usb_id)); - } - } - - /* retrieve the vendor and device strings as longname */ - if (quirk && quirk->vendor_name) { - len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname)); - } else { - if (dev->descriptor.iManufacturer) - len = usb_string(dev, dev->descriptor.iManufacturer, - card->longname, sizeof(card->longname)); - else - len = 0; - /* we don't really care if there isn't any vendor string */ - } - if (len > 0) - strlcat(card->longname, " ", sizeof(card->longname)); - - strlcat(card->longname, card->shortname, sizeof(card->longname)); - - len = strlcat(card->longname, " at ", sizeof(card->longname)); - - if (len < sizeof(card->longname)) - usb_make_path(dev, card->longname + len, sizeof(card->longname) - len); - - strlcat(card->longname, - snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" : - snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" : - ", high speed", - sizeof(card->longname)); - - snd_usb_audio_create_proc(chip); - - *rchip = chip; - return 0; -} - - -/* - * probe the active usb device - * - * note that this can be called multiple times per a device, when it - * includes multiple audio control interfaces. - * - * thus we check the usb device pointer and creates the card instance - * only at the first time. the successive calls of this function will - * append the pcm interface to the corresponding card. - */ -static void *snd_usb_audio_probe(struct usb_device *dev, - struct usb_interface *intf, - const struct usb_device_id *usb_id) -{ - const struct snd_usb_audio_quirk *quirk = (const struct snd_usb_audio_quirk *)usb_id->driver_info; - int i, err; - struct snd_usb_audio *chip; - struct usb_host_interface *alts; - int ifnum; - u32 id; - - alts = &intf->altsetting[0]; - ifnum = get_iface_desc(alts)->bInterfaceNumber; - id = USB_ID(le16_to_cpu(dev->descriptor.idVendor), - le16_to_cpu(dev->descriptor.idProduct)); - if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum) - goto __err_val; - - /* SB Extigy needs special boot-up sequence */ - /* if more models come, this will go to the quirk list. */ - if (id == USB_ID(0x041e, 0x3000)) { - if (snd_usb_extigy_boot_quirk(dev, intf) < 0) - goto __err_val; - } - /* SB Audigy 2 NX needs its own boot-up magic, too */ - if (id == USB_ID(0x041e, 0x3020)) { - if (snd_usb_audigy2nx_boot_quirk(dev) < 0) - goto __err_val; - } - - /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */ - if (id == USB_ID(0x10f5, 0x0200)) { - if (snd_usb_cm106_boot_quirk(dev) < 0) - goto __err_val; - } - - /* C-Media CM6206 / CM106-Like Sound Device */ - if (id == USB_ID(0x0d8c, 0x0102)) { - if (snd_usb_cm6206_boot_quirk(dev) < 0) - goto __err_val; - } - - /* Access Music VirusTI Desktop */ - if (id == USB_ID(0x133e, 0x0815)) { - if (snd_usb_accessmusic_boot_quirk(dev) < 0) - goto __err_val; - } - - /* - * found a config. now register to ALSA - */ - - /* check whether it's already registered */ - chip = NULL; - mutex_lock(®ister_mutex); - for (i = 0; i < SNDRV_CARDS; i++) { - if (usb_chip[i] && usb_chip[i]->dev == dev) { - if (usb_chip[i]->shutdown) { - snd_printk(KERN_ERR "USB device is in the shutdown state, cannot create a card instance\n"); - goto __error; - } - chip = usb_chip[i]; - break; - } - } - if (! chip) { - /* it's a fresh one. - * now look for an empty slot and create a new card instance - */ - for (i = 0; i < SNDRV_CARDS; i++) - if (enable[i] && ! usb_chip[i] && - (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) && - (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) { - if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) { - goto __error; - } - snd_card_set_dev(chip->card, &intf->dev); - break; - } - if (!chip) { - printk(KERN_ERR "no available usb audio device\n"); - goto __error; - } - } - - chip->txfr_quirk = 0; - err = 1; /* continue */ - if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) { - /* need some special handlings */ - if ((err = snd_usb_create_quirk(chip, intf, quirk)) < 0) - goto __error; - } - - if (err > 0) { - /* create normal USB audio interfaces */ - if (snd_usb_create_streams(chip, ifnum) < 0 || - snd_usb_create_mixer(chip, ifnum, ignore_ctl_error) < 0) { - goto __error; - } - } - - /* we are allowed to call snd_card_register() many times */ - if (snd_card_register(chip->card) < 0) { - goto __error; - } - - usb_chip[chip->index] = chip; - chip->num_interfaces++; - mutex_unlock(®ister_mutex); - return chip; - - __error: - if (chip && !chip->num_interfaces) - snd_card_free(chip->card); - mutex_unlock(®ister_mutex); - __err_val: - return NULL; -} - -/* - * we need to take care of counter, since disconnection can be called also - * many times as well as usb_audio_probe(). - */ -static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr) -{ - struct snd_usb_audio *chip; - struct snd_card *card; - struct list_head *p; - - if (ptr == (void *)-1L) - return; - - chip = ptr; - card = chip->card; - mutex_lock(®ister_mutex); - chip->shutdown = 1; - chip->num_interfaces--; - if (chip->num_interfaces <= 0) { - snd_card_disconnect(card); - /* release the pcm resources */ - list_for_each(p, &chip->pcm_list) { - snd_usb_stream_disconnect(p); - } - /* release the midi resources */ - list_for_each(p, &chip->midi_list) { - snd_usbmidi_disconnect(p); - } - /* release mixer resources */ - list_for_each(p, &chip->mixer_list) { - snd_usb_mixer_disconnect(p); - } - usb_chip[chip->index] = NULL; - mutex_unlock(®ister_mutex); - snd_card_free_when_closed(card); - } else { - mutex_unlock(®ister_mutex); - } -} - -/* - * new 2.5 USB kernel API - */ -static int usb_audio_probe(struct usb_interface *intf, - const struct usb_device_id *id) -{ - void *chip; - chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id); - if (chip) { - usb_set_intfdata(intf, chip); - return 0; - } else - return -EIO; -} - -static void usb_audio_disconnect(struct usb_interface *intf) -{ - snd_usb_audio_disconnect(interface_to_usbdev(intf), - usb_get_intfdata(intf)); -} - -#ifdef CONFIG_PM -static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) -{ - struct snd_usb_audio *chip = usb_get_intfdata(intf); - struct list_head *p; - struct snd_usb_stream *as; - - if (chip == (void *)-1L) - return 0; - - snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); - if (!chip->num_suspended_intf++) { - list_for_each(p, &chip->pcm_list) { - as = list_entry(p, struct snd_usb_stream, list); - snd_pcm_suspend_all(as->pcm); - } - } - - return 0; -} - -static int usb_audio_resume(struct usb_interface *intf) -{ - struct snd_usb_audio *chip = usb_get_intfdata(intf); - - if (chip == (void *)-1L) - return 0; - if (--chip->num_suspended_intf) - return 0; - /* - * ALSA leaves material resumption to user space - * we just notify - */ - - snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); - - return 0; -} -#endif /* CONFIG_PM */ - -static int __init snd_usb_audio_init(void) -{ - if (nrpacks < 1 || nrpacks > MAX_PACKS) { - printk(KERN_WARNING "invalid nrpacks value.\n"); - return -EINVAL; - } - return usb_register(&usb_audio_driver); -} - - -static void __exit snd_usb_audio_cleanup(void) -{ - usb_deregister(&usb_audio_driver); -} - -module_init(snd_usb_audio_init); -module_exit(snd_usb_audio_cleanup); diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h index 49a691a0b28..d679e72a3e5 100644 --- a/sound/usb/usbaudio.h +++ b/sound/usb/usbaudio.h @@ -27,6 +27,7 @@ #define USB_ID_PRODUCT(id) ((u16)(id)) /* + * */ struct snd_usb_audio { @@ -48,6 +49,10 @@ struct snd_usb_audio { struct list_head midi_list; /* list of midi interfaces */ struct list_head mixer_list; /* list of mixer interfaces */ + + int setup; /* from the 'device_setup' module param */ + int nrpacks; /* from the 'nrpacks' module param */ + int async_unlink; /* from the 'async_unlink' module param */ }; /* @@ -86,45 +91,8 @@ struct snd_usb_audio_quirk { const void *data; }; -/* - */ - -/*E-mu USB samplerate control quirk*/ -enum { - EMU_QUIRK_SR_44100HZ = 0, - EMU_QUIRK_SR_48000HZ, - EMU_QUIRK_SR_88200HZ, - EMU_QUIRK_SR_96000HZ, - EMU_QUIRK_SR_176400HZ, - EMU_QUIRK_SR_192000HZ -}; - #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8)) #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16)) #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24)) -unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size); - -void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype); -void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype); - -int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, - __u8 request, __u8 requesttype, __u16 value, __u16 index, - void *data, __u16 size, int timeout); - -/* - * retrieve usb_interface descriptor from the host interface - * (conditional for compatibility with the older API) - */ -#ifndef get_iface_desc -#define get_iface_desc(iface) (&(iface)->desc) -#define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc) -#define get_ep_desc(ep) (&(ep)->desc) -#define get_cfg_desc(cfg) (&(cfg)->desc) -#endif - -#ifndef snd_usb_get_speed -#define snd_usb_get_speed(dev) ((dev)->speed) -#endif - #endif /* __USBAUDIO_H */ diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c index 43d53a36249..5c056837594 100644 --- a/sound/usb/usbmixer.c +++ b/sound/usb/usbmixer.c @@ -42,6 +42,7 @@ #include "usbaudio.h" #include "usbmixer.h" +#include "helper.h" /* */ diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c index 4f6518c9b05..5f7b942ff57 100644 --- a/sound/usb/usx2y/us122l.c +++ b/sound/usb/usx2y/us122l.c @@ -25,7 +25,7 @@ #define MODNAME "US122L" #include "usb_stream.c" #include "../usbaudio.h" -#include "../usbmidi.h" +#include "../midi.h" #include "us122l.h" MODULE_AUTHOR("Karsten Wiese <fzu@wemgehoertderstaat.de>"); diff --git a/sound/usb/usx2y/usbusx2y.h b/sound/usb/usx2y/usbusx2y.h index 9ab97b40a35..e43c0a86441 100644 --- a/sound/usb/usx2y/usbusx2y.h +++ b/sound/usb/usx2y/usbusx2y.h @@ -1,7 +1,7 @@ #ifndef USBUSX2Y_H #define USBUSX2Y_H #include "../usbaudio.h" -#include "../usbmidi.h" +#include "../midi.h" #include "usbus428ctldefs.h" #define NRURBS 2 |