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[ALSA] fm801 - Add PM support
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Modules: FM801 driver

Add PM support to fm801 driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Takashi Iwai authored and Jaroslav Kysela committed Jan 3, 2006
1 parent 09668b4 commit b1e9ed2
Showing 1 changed file with 158 additions and 87 deletions.
245 changes: 158 additions & 87 deletions sound/pci/fm801.c
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Original file line number Diff line number Diff line change
Expand Up @@ -103,7 +103,11 @@ MODULE_PARM_DESC(tea575x_tuner, "Enable TEA575x tuner.");
#define FM801_OPL3_DATA1 0x6b /* OPL3 Bank 1 Write */
#define FM801_POWERDOWN 0x70 /* Blocks Power Down Control */

#define FM801_AC97_ADDR_SHIFT 10
/* codec access */
#define FM801_AC97_READ (1<<7) /* read=1, write=0 */
#define FM801_AC97_VALID (1<<8) /* port valid=1 */
#define FM801_AC97_BUSY (1<<9) /* busy=1 */
#define FM801_AC97_ADDR_SHIFT 10 /* codec id (2bit) */

/* playback and record control register bits */
#define FM801_BUF1_LAST (1<<1)
Expand Down Expand Up @@ -189,6 +193,10 @@ struct fm801 {
#ifdef TEA575X_RADIO
struct snd_tea575x tea;
#endif

#ifdef CONFIG_PM
u16 saved_regs[0x20];
#endif
};

static struct pci_device_id snd_fm801_ids[] = {
Expand Down Expand Up @@ -231,7 +239,7 @@ static void snd_fm801_codec_write(struct snd_ac97 *ac97,
* Wait until the codec interface is not ready..
*/
for (idx = 0; idx < 100; idx++) {
if (!(inw(FM801_REG(chip, AC97_CMD)) & (1<<9)))
if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
goto ok1;
udelay(10);
}
Expand All @@ -246,7 +254,7 @@ static void snd_fm801_codec_write(struct snd_ac97 *ac97,
* Wait until the write command is not completed..
*/
for (idx = 0; idx < 1000; idx++) {
if (!(inw(FM801_REG(chip, AC97_CMD)) & (1<<9)))
if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
return;
udelay(10);
}
Expand All @@ -262,7 +270,7 @@ static unsigned short snd_fm801_codec_read(struct snd_ac97 *ac97, unsigned short
* Wait until the codec interface is not ready..
*/
for (idx = 0; idx < 100; idx++) {
if (!(inw(FM801_REG(chip, AC97_CMD)) & (1<<9)))
if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
goto ok1;
udelay(10);
}
Expand All @@ -271,9 +279,10 @@ static unsigned short snd_fm801_codec_read(struct snd_ac97 *ac97, unsigned short

ok1:
/* read command */
outw(reg | (ac97->addr << FM801_AC97_ADDR_SHIFT) | (1<<7), FM801_REG(chip, AC97_CMD));
outw(reg | (ac97->addr << FM801_AC97_ADDR_SHIFT) | FM801_AC97_READ,
FM801_REG(chip, AC97_CMD));
for (idx = 0; idx < 100; idx++) {
if (!(inw(FM801_REG(chip, AC97_CMD)) & (1<<9)))
if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
goto ok2;
udelay(10);
}
Expand All @@ -282,7 +291,7 @@ static unsigned short snd_fm801_codec_read(struct snd_ac97 *ac97, unsigned short

ok2:
for (idx = 0; idx < 1000; idx++) {
if (inw(FM801_REG(chip, AC97_CMD)) & (1<<8))
if (inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_VALID)
goto ok3;
udelay(10);
}
Expand Down Expand Up @@ -354,9 +363,11 @@ static int snd_fm801_playback_trigger(struct snd_pcm_substream *substream,
chip->ply_ctrl &= ~(FM801_START | FM801_PAUSE);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
chip->ply_ctrl |= FM801_PAUSE;
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
chip->ply_ctrl &= ~FM801_PAUSE;
break;
default:
Expand Down Expand Up @@ -387,9 +398,11 @@ static int snd_fm801_capture_trigger(struct snd_pcm_substream *substream,
chip->cap_ctrl &= ~(FM801_START | FM801_PAUSE);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
chip->cap_ctrl |= FM801_PAUSE;
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
chip->cap_ctrl &= ~FM801_PAUSE;
break;
default:
Expand Down Expand Up @@ -557,7 +570,7 @@ static struct snd_pcm_hardware snd_fm801_playback =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
.rates = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
Expand All @@ -577,7 +590,7 @@ static struct snd_pcm_hardware snd_fm801_capture =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
.rates = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
Expand Down Expand Up @@ -1218,6 +1231,85 @@ static int __devinit snd_fm801_mixer(struct fm801 *chip)
* initialization routines
*/

static int wait_for_codec(struct fm801 *chip, unsigned int codec_id,
unsigned short reg, unsigned long waits)
{
unsigned long timeout = jiffies + waits;

outw(FM801_AC97_READ | (codec_id << FM801_AC97_ADDR_SHIFT) | reg,
FM801_REG(chip, AC97_CMD));
udelay(5);
do {
if ((inw(FM801_REG(chip, AC97_CMD)) & (FM801_AC97_VALID|FM801_AC97_BUSY))
== FM801_AC97_VALID)
return 0;
schedule_timeout_uninterruptible(1);
} while (time_after(timeout, jiffies));
return -EIO;
}

static int snd_fm801_chip_init(struct fm801 *chip, int resume)
{
int id;
unsigned short cmdw;

/* codec cold reset + AC'97 warm reset */
outw((1<<5) | (1<<6), FM801_REG(chip, CODEC_CTRL));
inw(FM801_REG(chip, CODEC_CTRL)); /* flush posting data */
udelay(100);
outw(0, FM801_REG(chip, CODEC_CTRL));

if (wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750)) < 0) {
snd_printk(KERN_ERR "Primary AC'97 codec not found\n");
if (! resume)
return -EIO;
}

if (chip->multichannel) {
if (chip->secondary_addr) {
wait_for_codec(chip, chip->secondary_addr,
AC97_VENDOR_ID1, msecs_to_jiffies(50));
} else {
/* my card has the secondary codec */
/* at address #3, so the loop is inverted */
for (id = 3; id > 0; id--) {
if (! wait_for_codec(chip, id, AC97_VENDOR_ID1,
msecs_to_jiffies(50))) {
cmdw = inw(FM801_REG(chip, AC97_DATA));
if (cmdw != 0xffff && cmdw != 0) {
chip->secondary = 1;
chip->secondary_addr = id;
break;
}
}
}
}

/* the recovery phase, it seems that probing for non-existing codec might */
/* cause timeout problems */
wait_for_codec(chip, 0, AC97_VENDOR_ID1, msecs_to_jiffies(750));
}

/* init volume */
outw(0x0808, FM801_REG(chip, PCM_VOL));
outw(0x9f1f, FM801_REG(chip, FM_VOL));
outw(0x8808, FM801_REG(chip, I2S_VOL));

/* I2S control - I2S mode */
outw(0x0003, FM801_REG(chip, I2S_MODE));

/* interrupt setup - unmask MPU, PLAYBACK & CAPTURE */
cmdw = inw(FM801_REG(chip, IRQ_MASK));
cmdw &= ~0x0083;
outw(cmdw, FM801_REG(chip, IRQ_MASK));

/* interrupt clear */
outw(FM801_IRQ_PLAYBACK|FM801_IRQ_CAPTURE|FM801_IRQ_MPU, FM801_REG(chip, IRQ_STATUS));

return 0;
}


static int snd_fm801_free(struct fm801 *chip)
{
unsigned short cmdw;
Expand Down Expand Up @@ -1255,9 +1347,7 @@ static int __devinit snd_fm801_create(struct snd_card *card,
struct fm801 ** rchip)
{
struct fm801 *chip;
unsigned char rev, id;
unsigned short cmdw;
unsigned long timeout;
unsigned char rev;
int err;
static struct snd_device_ops ops = {
.dev_free = snd_fm801_dev_free,
Expand Down Expand Up @@ -1294,81 +1384,7 @@ static int __devinit snd_fm801_create(struct snd_card *card,
if (rev >= 0xb1) /* FM801-AU */
chip->multichannel = 1;

/* codec cold reset + AC'97 warm reset */
outw((1<<5)|(1<<6), FM801_REG(chip, CODEC_CTRL));
inw(FM801_REG(chip, CODEC_CTRL)); /* flush posting data */
udelay(100);
outw(0, FM801_REG(chip, CODEC_CTRL));

timeout = (jiffies + (3 * HZ) / 4) + 1; /* min 750ms */

outw((1<<7) | (0 << FM801_AC97_ADDR_SHIFT), FM801_REG(chip, AC97_CMD));
udelay(5);
do {
if ((inw(FM801_REG(chip, AC97_CMD)) & (3<<8)) == (1<<8))
goto __ac97_secondary;
schedule_timeout_uninterruptible(1);
} while (time_after(timeout, jiffies));
snd_printk(KERN_ERR "Primary AC'97 codec not found\n");
snd_fm801_free(chip);
return -EIO;

__ac97_secondary:
if (!chip->multichannel) /* lookup is not required */
goto __ac97_ok;
for (id = 3; id > 0; id--) { /* my card has the secondary codec */
/* at address #3, so the loop is inverted */

timeout = jiffies + HZ / 20;

outw((1<<7) | (id << FM801_AC97_ADDR_SHIFT) | AC97_VENDOR_ID1,
FM801_REG(chip, AC97_CMD));
udelay(5);
do {
if ((inw(FM801_REG(chip, AC97_CMD)) & (3<<8)) == (1<<8)) {
cmdw = inw(FM801_REG(chip, AC97_DATA));
if (cmdw != 0xffff && cmdw != 0) {
chip->secondary = 1;
chip->secondary_addr = id;
goto __ac97_ok;
}
}
schedule_timeout_uninterruptible(1);
} while (time_after(timeout, jiffies));
}

/* the recovery phase, it seems that probing for non-existing codec might */
/* cause timeout problems */
timeout = (jiffies + (3 * HZ) / 4) + 1; /* min 750ms */

outw((1<<7) | (0 << FM801_AC97_ADDR_SHIFT), FM801_REG(chip, AC97_CMD));
udelay(5);
do {
if ((inw(FM801_REG(chip, AC97_CMD)) & (3<<8)) == (1<<8))
goto __ac97_ok;
schedule_timeout_uninterruptible(1);
} while (time_after(timeout, jiffies));
snd_printk(KERN_ERR "Primary AC'97 codec not responding\n");
snd_fm801_free(chip);
return -EIO;

__ac97_ok:

/* init volume */
outw(0x0808, FM801_REG(chip, PCM_VOL));
outw(0x9f1f, FM801_REG(chip, FM_VOL));
outw(0x8808, FM801_REG(chip, I2S_VOL));

/* I2S control - I2S mode */
outw(0x0003, FM801_REG(chip, I2S_MODE));

/* interrupt setup - unmask MPU, PLAYBACK & CAPTURE */
cmdw = inw(FM801_REG(chip, IRQ_MASK));
cmdw &= ~0x0083;
outw(cmdw, FM801_REG(chip, IRQ_MASK));

/* interrupt clear */
outw(FM801_IRQ_PLAYBACK|FM801_IRQ_CAPTURE|FM801_IRQ_MPU, FM801_REG(chip, IRQ_STATUS));
snd_fm801_chip_init(chip, 0);

if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_fm801_free(chip);
Expand Down Expand Up @@ -1415,6 +1431,7 @@ static int __devinit snd_card_fm801_probe(struct pci_dev *pci,
snd_card_free(card);
return err;
}
card->private_data = chip;

strcpy(card->driver, "FM801");
strcpy(card->shortname, "ForteMedia FM801-");
Expand Down Expand Up @@ -1462,11 +1479,65 @@ static void __devexit snd_card_fm801_remove(struct pci_dev *pci)
pci_set_drvdata(pci, NULL);
}

#ifdef CONFIG_PM
static unsigned char saved_regs[] = {
FM801_PCM_VOL, FM801_I2S_VOL, FM801_FM_VOL, FM801_REC_SRC,
FM801_PLY_CTRL, FM801_PLY_COUNT, FM801_PLY_BUF1, FM801_PLY_BUF2,
FM801_CAP_CTRL, FM801_CAP_COUNT, FM801_CAP_BUF1, FM801_CAP_BUF2,
FM801_CODEC_CTRL, FM801_I2S_MODE, FM801_VOLUME, FM801_GEN_CTRL,
};

static int snd_fm801_suspend(struct pci_dev *pci, pm_message_t state)
{
struct snd_card *card = pci_get_drvdata(pci);
struct fm801 *chip = card->private_data;
int i;

snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
snd_pcm_suspend_all(chip->pcm);
snd_ac97_suspend(chip->ac97);
snd_ac97_suspend(chip->ac97_sec);
for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
chip->saved_regs[i] = inw(chip->port + saved_regs[i]);
/* FIXME: tea575x suspend */

pci_set_power_state(pci, PCI_D3hot);
pci_disable_device(pci);
pci_save_state(pci);
return 0;
}

static int snd_fm801_resume(struct pci_dev *pci)
{
struct snd_card *card = pci_get_drvdata(pci);
struct fm801 *chip = card->private_data;
int i;

pci_restore_state(pci);
pci_enable_device(pci);
pci_set_power_state(pci, PCI_D0);
pci_set_master(pci);

snd_fm801_chip_init(chip, 1);
snd_ac97_resume(chip->ac97);
snd_ac97_resume(chip->ac97_sec);
for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
outw(chip->saved_regs[i], chip->port + saved_regs[i]);

snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
#endif

static struct pci_driver driver = {
.name = "FM801",
.id_table = snd_fm801_ids,
.probe = snd_card_fm801_probe,
.remove = __devexit_p(snd_card_fm801_remove),
#ifdef CONFIG_PM
.suspend = snd_fm801_suspend,
.resume = snd_fm801_resume,
#endif
};

static int __init alsa_card_fm801_init(void)
Expand Down

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