[ALSA] fm801 - Add PM support
Modules: FM801 driver
Add PM support to fm801 driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c
index a57aca7..6ab4aef 100644
--- a/sound/pci/fm801.c
+++ b/sound/pci/fm801.c
@@ -103,7 +103,11 @@
#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)
@@ -189,6 +193,10 @@
#ifdef TEA575X_RADIO
struct snd_tea575x tea;
#endif
+
+#ifdef CONFIG_PM
+ u16 saved_regs[0x20];
+#endif
};
static struct pci_device_id snd_fm801_ids[] = {
@@ -231,7 +239,7 @@
* 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);
}
@@ -246,7 +254,7 @@
* 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);
}
@@ -262,7 +270,7 @@
* 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);
}
@@ -271,9 +279,10 @@
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);
}
@@ -282,7 +291,7 @@
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);
}
@@ -354,9 +363,11 @@
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:
@@ -387,9 +398,11 @@
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:
@@ -557,7 +570,7 @@
{
.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,
@@ -577,7 +590,7 @@
{
.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,
@@ -1218,6 +1231,85 @@
* 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;
@@ -1255,9 +1347,7 @@
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,
@@ -1294,81 +1384,7 @@
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);
@@ -1415,6 +1431,7 @@
snd_card_free(card);
return err;
}
+ card->private_data = chip;
strcpy(card->driver, "FM801");
strcpy(card->shortname, "ForteMedia FM801-");
@@ -1462,11 +1479,65 @@
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)