diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2005-05-02 08:58:31 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2005-05-29 10:06:00 +0200 |
| commit | 434b7f56872fc5783c77f362e895da8e22168325 (patch) | |
| tree | 421248cb574264b68c4c432f3c5f428f69666ed1 /sound/usb/usbmixer.c | |
| parent | ca81090a00e3e7152fe1f3d7398f11d57919428e (diff) | |
[ALSA] usb-audio - make SB remote control device LIRC compatible
USB generic driver
Add ioctls to the Sound Blaster remote control hwdep device so that it
can be used with LIRC.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'sound/usb/usbmixer.c')
| -rw-r--r-- | sound/usb/usbmixer.c | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c index 5683ae0b5ba..d90d6fa7431 100644 --- a/sound/usb/usbmixer.c +++ b/sound/usb/usbmixer.c @@ -39,6 +39,18 @@ #include "usbaudio.h" +#if 0 +#include <linux/lirc.h> +#else +/* only those symbols from lirc.h we actually need: */ +#include <linux/ioctl.h> +#define LIRC_MODE2REC(x) ((x) << 16) +#define LIRC_MODE_CODE 0x00000008 +#define LIRC_CAN_REC_CODE LIRC_MODE2REC(LIRC_MODE_CODE) +#define LIRC_GET_FEATURES _IOR('i', 0x00000000, __u32) +#define LIRC_GET_REC_MODE _IOR('i', 0x00000002, __u32) +#define LIRC_SET_REC_MODE _IOW('i', 0x00000012, __u32) +#endif /* */ @@ -1739,12 +1751,15 @@ static long snd_usb_sbrc_hwdep_read(snd_hwdep_t *hw, char __user *buf, int err; u32 rc_code; - if (count != 1) + if (count != 1 && count != 4) return -EINVAL; err = wait_event_interruptible(mixer->rc_waitq, (rc_code = xchg(&mixer->rc_code, 0)) != 0); if (err == 0) { - err = put_user(rc_code, buf); + if (count == 1) + err = put_user(rc_code, buf); + else + err = put_user(rc_code, (u32 __user *)buf); } return err < 0 ? err : count; } @@ -1758,6 +1773,25 @@ static unsigned int snd_usb_sbrc_hwdep_poll(snd_hwdep_t *hw, struct file *file, return mixer->rc_code ? POLLIN | POLLRDNORM : 0; } +static int snd_usb_sbrc_hwdep_ioctl(snd_hwdep_t *hw, struct file *file, + unsigned int cmd, unsigned long arg) +{ + u32 __user *argp = (u32 __user *)arg; + u32 mode; + + switch (cmd) { + case LIRC_GET_FEATURES: + return put_user(LIRC_CAN_REC_CODE, argp); + case LIRC_GET_REC_MODE: + return put_user(LIRC_MODE_CODE, argp); + case LIRC_SET_REC_MODE: + if (get_user(mode, argp)) + return -EFAULT; + return mode == LIRC_MODE_CODE ? 0 : -ENOSYS; + } + return -ENOTTY; +} + static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer) { snd_hwdep_t *hwdep; @@ -1788,6 +1822,7 @@ static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer) hwdep->ops.open = snd_usb_sbrc_hwdep_open; hwdep->ops.release = snd_usb_sbrc_hwdep_release; hwdep->ops.poll = snd_usb_sbrc_hwdep_poll; + hwdep->ops.ioctl = snd_usb_sbrc_hwdep_ioctl; mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL); if (!mixer->rc_urb) |