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Diffstat (limited to 'sound/isa/ad1848/ad1848_lib.c')
-rw-r--r--sound/isa/ad1848/ad1848_lib.c487
1 files changed, 0 insertions, 487 deletions
diff --git a/sound/isa/ad1848/ad1848_lib.c b/sound/isa/ad1848/ad1848_lib.c
index aa803d38a8a..e69de29bb2d 100644
--- a/sound/isa/ad1848/ad1848_lib.c
+++ b/sound/isa/ad1848/ad1848_lib.c
@@ -1,487 +0,0 @@
-/*
- * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
- * Routines for control of AD1848/AD1847/CS4248
- *
- *
- * 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
- *
- */
-
-#define SNDRV_MAIN_OBJECT_FILE
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <sound/core.h>
-#include <sound/ad1848.h>
-#include <sound/control.h>
-#include <sound/tlv.h>
-#include <sound/pcm_params.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-
-MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
-MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248");
-MODULE_LICENSE("GPL");
-
-#if 0
-#define SNDRV_DEBUG_MCE
-#endif
-
-/*
- * Some variables
- */
-
-static unsigned char snd_ad1848_original_image[16] =
-{
- 0x00, /* 00 - lic */
- 0x00, /* 01 - ric */
- 0x9f, /* 02 - la1ic */
- 0x9f, /* 03 - ra1ic */
- 0x9f, /* 04 - la2ic */
- 0x9f, /* 05 - ra2ic */
- 0xbf, /* 06 - loc */
- 0xbf, /* 07 - roc */
- 0x20, /* 08 - dfr */
- AD1848_AUTOCALIB, /* 09 - ic */
- 0x00, /* 0a - pc */
- 0x00, /* 0b - ti */
- 0x00, /* 0c - mi */
- 0x00, /* 0d - lbc */
- 0x00, /* 0e - dru */
- 0x00, /* 0f - drl */
-};
-
-/*
- * Basic I/O functions
- */
-
-static void snd_ad1848_wait(struct snd_wss *chip)
-{
- int timeout;
-
- for (timeout = 250; timeout > 0; timeout--) {
- if ((inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT) == 0)
- break;
- udelay(100);
- }
-}
-
-void snd_ad1848_out(struct snd_wss *chip,
- unsigned char reg,
- unsigned char value)
-{
- snd_ad1848_wait(chip);
-#ifdef CONFIG_SND_DEBUG
- if (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT)
- snd_printk(KERN_WARNING "auto calibration time out - "
- "reg = 0x%x, value = 0x%x\n", reg, value);
-#endif
- outb(chip->mce_bit | reg, chip->port + CS4231P(REGSEL));
- outb(chip->image[reg] = value, chip->port + CS4231P(REG));
- mb();
- snd_printdd("codec out - reg 0x%x = 0x%x\n",
- chip->mce_bit | reg, value);
-}
-
-EXPORT_SYMBOL(snd_ad1848_out);
-
-static unsigned char snd_ad1848_in(struct snd_wss *chip, unsigned char reg)
-{
- snd_ad1848_wait(chip);
-#ifdef CONFIG_SND_DEBUG
- if (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT)
- snd_printk(KERN_WARNING "auto calibration time out - "
- "reg = 0x%x\n", reg);
-#endif
- outb(chip->mce_bit | reg, chip->port + CS4231P(REGSEL));
- mb();
- return inb(chip->port + CS4231P(REG));
-}
-
-#if 0
-
-static void snd_ad1848_debug(struct snd_wss *chip)
-{
- printk(KERN_DEBUG "AD1848 REGS: INDEX = 0x%02x ", inb(chip->port + CS4231P(REGSEL)));
- printk(KERN_DEBUG " STATUS = 0x%02x\n", inb(chip->port + CS4231P(STATUS)));
- printk(KERN_DEBUG " 0x00: left input = 0x%02x ", snd_ad1848_in(chip, 0x00));
- printk(KERN_DEBUG " 0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
- printk(KERN_DEBUG " 0x01: right input = 0x%02x ", snd_ad1848_in(chip, 0x01));
- printk(KERN_DEBUG " 0x09: iface (CFIG 1) = 0x%02x\n", snd_ad1848_in(chip, 0x09));
- printk(KERN_DEBUG " 0x02: AUXA left = 0x%02x ", snd_ad1848_in(chip, 0x02));
- printk(KERN_DEBUG " 0x0a: pin control = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
- printk(KERN_DEBUG " 0x03: AUXA right = 0x%02x ", snd_ad1848_in(chip, 0x03));
- printk(KERN_DEBUG " 0x0b: init & status = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
- printk(KERN_DEBUG " 0x04: AUXB left = 0x%02x ", snd_ad1848_in(chip, 0x04));
- printk(KERN_DEBUG " 0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
- printk(KERN_DEBUG " 0x05: AUXB right = 0x%02x ", snd_ad1848_in(chip, 0x05));
- printk(KERN_DEBUG " 0x0d: loopback = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
- printk(KERN_DEBUG " 0x06: left output = 0x%02x ", snd_ad1848_in(chip, 0x06));
- printk(KERN_DEBUG " 0x0e: data upr count = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
- printk(KERN_DEBUG " 0x07: right output = 0x%02x ", snd_ad1848_in(chip, 0x07));
- printk(KERN_DEBUG " 0x0f: data lwr count = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
-}
-
-#endif
-
-/*
- * AD1848 detection / MCE routines
- */
-
-static void snd_ad1848_mce_up(struct snd_wss *chip)
-{
- unsigned long flags;
- int timeout;
-
- snd_ad1848_wait(chip);
-#ifdef CONFIG_SND_DEBUG
- if (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT)
- snd_printk(KERN_WARNING "mce_up - auto calibration time out (0)\n");
-#endif
- spin_lock_irqsave(&chip->reg_lock, flags);
- chip->mce_bit |= AD1848_MCE;
- timeout = inb(chip->port + CS4231P(REGSEL));
- if (timeout == 0x80)
- snd_printk(KERN_WARNING "mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
- if (!(timeout & AD1848_MCE))
- outb(chip->mce_bit | (timeout & 0x1f),
- chip->port + CS4231P(REGSEL));
- spin_unlock_irqrestore(&chip->reg_lock, flags);
-}
-
-static void snd_ad1848_mce_down(struct snd_wss *chip)
-{
- unsigned long flags, timeout;
- int reg;
-
- spin_lock_irqsave(&chip->reg_lock, flags);
- for (timeout = 5; timeout > 0; timeout--)
- inb(chip->port + CS4231P(REGSEL));
- /* end of cleanup sequence */
- for (timeout = 12000;
- timeout > 0 && (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT);
- timeout--)
- udelay(100);
-
- snd_printdd("(1) timeout = %ld\n", timeout);
-
-#ifdef CONFIG_SND_DEBUG
- if (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT)
- snd_printk(KERN_WARNING
- "mce_down [0x%lx] - auto calibration time out (0)\n",
- chip->port + CS4231P(REGSEL));
-#endif
-
- chip->mce_bit &= ~AD1848_MCE;
- reg = inb(chip->port + CS4231P(REGSEL));
- outb(chip->mce_bit | (reg & 0x1f), chip->port + CS4231P(REGSEL));
- if (reg == 0x80)
- snd_printk(KERN_WARNING "mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
- if ((reg & AD1848_MCE) == 0) {
- spin_unlock_irqrestore(&chip->reg_lock, flags);
- return;
- }
-
- /*
- * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
- * It may take up to 5 sample periods (at most 907 us @ 5.5125 kHz) for
- * the process to _start_, so it is important to wait at least that long
- * before checking. Otherwise we might think AC has finished when it
- * has in fact not begun. It could take 128 (no AC) or 384 (AC) cycles
- * for ACI to drop. This gives a wait of at most 70 ms with a more
- * typical value of 3-9 ms.
- */
- timeout = jiffies + msecs_to_jiffies(250);
- do {
- spin_unlock_irqrestore(&chip->reg_lock, flags);
- msleep(1);
- spin_lock_irqsave(&chip->reg_lock, flags);
- reg = snd_ad1848_in(chip, AD1848_TEST_INIT) &
- AD1848_CALIB_IN_PROGRESS;
- } while (reg && time_before(jiffies, timeout));
- spin_unlock_irqrestore(&chip->reg_lock, flags);
- if (reg)
- snd_printk(KERN_ERR
- "mce_down - auto calibration time out (2)\n");
-
- snd_printdd("(4) jiffies = %lu\n", jiffies);
- snd_printd("mce_down - exit = 0x%x\n",
- inb(chip->port + CS4231P(REGSEL)));
-}
-
-static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id)
-{
- struct snd_wss *chip = dev_id;
-
- if ((chip->mode & WSS_MODE_PLAY) && chip->playback_substream)
- snd_pcm_period_elapsed(chip->playback_substream);
- if ((chip->mode & WSS_MODE_RECORD) && chip->capture_substream)
- snd_pcm_period_elapsed(chip->capture_substream);
- outb(0, chip->port + CS4231P(STATUS)); /* clear global interrupt bit */
- return IRQ_HANDLED;
-}
-
-/*
-
- */
-
-static void snd_ad1848_thinkpad_twiddle(struct snd_wss *chip, int on)
-{
- int tmp;
-
- if (!chip->thinkpad_flag) return;
-
- outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
- tmp = inb(AD1848_THINKPAD_CTL_PORT2);
-
- if (on)
- /* turn it on */
- tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
- else
- /* turn it off */
- tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
-
- outb(tmp, AD1848_THINKPAD_CTL_PORT2);
-
-}
-
-#ifdef CONFIG_PM
-static void snd_ad1848_suspend(struct snd_wss *chip)
-{
- snd_pcm_suspend_all(chip->pcm);
- if (chip->thinkpad_flag)
- snd_ad1848_thinkpad_twiddle(chip, 0);
-}
-
-static void snd_ad1848_resume(struct snd_wss *chip)
-{
- int i;
-
- if (chip->thinkpad_flag)
- snd_ad1848_thinkpad_twiddle(chip, 1);
-
- /* clear any pendings IRQ */
- inb(chip->port + CS4231P(STATUS));
- outb(0, chip->port + CS4231P(STATUS));
- mb();
-
- snd_ad1848_mce_down(chip);
- for (i = 0; i < 16; i++)
- snd_ad1848_out(chip, i, chip->image[i]);
- snd_ad1848_mce_up(chip);
- snd_ad1848_mce_down(chip);
-}
-#endif /* CONFIG_PM */
-
-static int snd_ad1848_probe(struct snd_wss *chip)
-{
- unsigned long flags;
- int i, id, rev, ad1847;
- unsigned char *ptr;
-
-#if 0
- snd_ad1848_debug(chip);
-#endif
- id = ad1847 = 0;
- for (i = 0; i < 1000; i++) {
- mb();
- if (inb(chip->port + CS4231P(REGSEL)) & AD1848_INIT)
- udelay(500);
- else {
- spin_lock_irqsave(&chip->reg_lock, flags);
- snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
- snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
- snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
- rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
- if (rev == 0x65) {
- spin_unlock_irqrestore(&chip->reg_lock, flags);
- id = 1;
- ad1847 = 1;
- break;
- }
- if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
- spin_unlock_irqrestore(&chip->reg_lock, flags);
- id = 1;
- break;
- }
- spin_unlock_irqrestore(&chip->reg_lock, flags);
- }
- }
- if (id != 1)
- return -ENODEV; /* no valid device found */
- if (chip->hardware == WSS_HW_DETECT) {
- if (ad1847) {
- chip->hardware = WSS_HW_AD1847;
- } else {
- chip->hardware = WSS_HW_AD1848;
- rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
- if (rev & 0x80) {
- chip->hardware = WSS_HW_CS4248;
- } else if ((rev & 0x0f) == 0x0a) {
- snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
- for (i = 0; i < 16; ++i) {
- if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
- chip->hardware = WSS_HW_CMI8330;
- break;
- }
- }
- snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
- }
- }
- }
- spin_lock_irqsave(&chip->reg_lock, flags);
- inb(chip->port + CS4231P(STATUS)); /* clear any pendings IRQ */
- outb(0, chip->port + CS4231P(STATUS));
- mb();
- spin_unlock_irqrestore(&chip->reg_lock, flags);
-
- chip->image[AD1848_MISC_INFO] = 0x00;
- chip->image[AD1848_IFACE_CTRL] =
- (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
- ptr = (unsigned char *) &chip->image;
- snd_ad1848_mce_down(chip);
- spin_lock_irqsave(&chip->reg_lock, flags);
- for (i = 0; i < 16; i++) /* ok.. fill all AD1848 registers */
- snd_ad1848_out(chip, i, *ptr++);
- spin_unlock_irqrestore(&chip->reg_lock, flags);
- snd_ad1848_mce_up(chip);
- /* init needed for WSS pcm */
- spin_lock_irqsave(&chip->reg_lock, flags);
- chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE |
- AD1848_PLAYBACK_PIO |
- AD1848_CAPTURE_ENABLE |
- AD1848_CAPTURE_PIO |
- AD1848_CALIB_MODE);
- chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
- snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
- spin_unlock_irqrestore(&chip->reg_lock, flags);
- snd_ad1848_mce_down(chip);
- return 0; /* all things are ok.. */
-}
-
-/*
-
- */
-
-static int snd_ad1848_free(struct snd_wss *chip)
-{
- release_and_free_resource(chip->res_port);
- if (chip->irq >= 0)
- free_irq(chip->irq, (void *) chip);
- if (chip->dma1 >= 0) {
- snd_dma_disable(chip->dma1);
- free_dma(chip->dma1);
- }
- kfree(chip);
- return 0;
-}
-
-static int snd_ad1848_dev_free(struct snd_device *device)
-{
- struct snd_wss *chip = device->device_data;
- return snd_ad1848_free(chip);
-}
-
-int snd_ad1848_create(struct snd_card *card,
- unsigned long port,
- int irq, int dma,
- unsigned short hardware,
- struct snd_wss **rchip)
-{
- static struct snd_device_ops ops = {
- .dev_free = snd_ad1848_dev_free,
- };
- struct snd_wss *chip;
- int err;
-
- *rchip = NULL;
- chip = kzalloc(sizeof(*chip), GFP_KERNEL);
- if (chip == NULL)
- return -ENOMEM;
- spin_lock_init(&chip->reg_lock);
- chip->card = card;
- chip->port = port;
- chip->irq = -1;
- chip->dma1 = -1;
- chip->dma2 = -1;
- chip->single_dma = 1;
- chip->hardware = hardware;
- memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
-
- if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
- snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
- snd_ad1848_free(chip);
- return -EBUSY;
- }
- if (request_irq(irq, snd_ad1848_interrupt, IRQF_DISABLED, "AD1848", (void *) chip)) {
- snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
- snd_ad1848_free(chip);
- return -EBUSY;
- }
- chip->irq = irq;
- if (request_dma(dma, "AD1848")) {
- snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
- snd_ad1848_free(chip);
- return -EBUSY;
- }
- chip->dma1 = dma;
- chip->dma2 = dma;
-
- if (hardware == WSS_HW_THINKPAD) {
- chip->thinkpad_flag = 1;
- chip->hardware = WSS_HW_DETECT; /* reset */
- snd_ad1848_thinkpad_twiddle(chip, 1);
- }
-
- if (snd_ad1848_probe(chip) < 0) {
- snd_ad1848_free(chip);
- return -ENODEV;
- }
-
- /* Register device */
- if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
- snd_ad1848_free(chip);
- return err;
- }
-
-#ifdef CONFIG_PM
- chip->suspend = snd_ad1848_suspend;
- chip->resume = snd_ad1848_resume;
-#endif
-
- *rchip = chip;
- return 0;
-}
-
-EXPORT_SYMBOL(snd_ad1848_create);
-
-/*
- * INIT part
- */
-
-static int __init alsa_ad1848_init(void)
-{
- return 0;
-}
-
-static void __exit alsa_ad1848_exit(void)
-{
-}
-
-module_init(alsa_ad1848_init)
-module_exit(alsa_ad1848_exit)
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 19:03:56 +0000