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ALSA: fm801: detect FM-only card earlier

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If user does not supply tea575x_tuner parameter the driver tries to detect the
tuner type. The failed codec initialization is considered as FM-only card
present, however the driver still registers an IRQ handler for it.

Move codec detection earlier to set tea575x_tuner parameter before check.

Here the following functions are introduced
 reset_coded()                       resets AC97 codec
 snd_fm801_chip_multichannel_init()  initializes cards with multichannel support

Fixes: 5618955c42 (ALSA: fm801: move to pcim_* and devm_* functions)
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Andy Shevchenko 2015-12-21 19:09:53 +02:00 committed by Takashi Iwai
parent dbec6719ac
commit b56fa687e0
1 changed files with 39 additions and 30 deletions
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69
sound/pci/fm801.c
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@ -1098,26 +1098,20 @@ static int wait_for_codec(struct fm801 *chip, unsigned int codec_id,
return -EIO;
}
static int snd_fm801_chip_init(struct fm801 *chip, int resume)
static int reset_codec(struct fm801 *chip)
{
unsigned short cmdw;
if (chip->tea575x_tuner & TUNER_ONLY)
goto __ac97_ok;
/* codec cold reset + AC'97 warm reset */
fm801_writew(chip, CODEC_CTRL, (1 << 5) | (1 << 6));
fm801_readw(chip, CODEC_CTRL); /* flush posting data */
udelay(100);
fm801_writew(chip, CODEC_CTRL, 0);
if (wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750)) < 0)
if (!resume) {
dev_info(chip->card->dev,
"Primary AC'97 codec not found, assume SF64-PCR (tuner-only)\n");
chip->tea575x_tuner = 3 | TUNER_ONLY;
goto __ac97_ok;
}
return wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750));
}
static void snd_fm801_chip_multichannel_init(struct fm801 *chip)
{
unsigned short cmdw;
if (chip->multichannel) {
if (chip->secondary_addr) {
@ -1144,8 +1138,11 @@ static int snd_fm801_chip_init(struct fm801 *chip, int resume)
/* cause timeout problems */
wait_for_codec(chip, 0, AC97_VENDOR_ID1, msecs_to_jiffies(750));
}
}
__ac97_ok:
static void snd_fm801_chip_init(struct fm801 *chip)
{
unsigned short cmdw;
/* init volume */
fm801_writew(chip, PCM_VOL, 0x0808);
@ -1166,11 +1163,8 @@ static int snd_fm801_chip_init(struct fm801 *chip, int resume)
/* interrupt clear */
fm801_writew(chip, IRQ_STATUS,
FM801_IRQ_PLAYBACK | FM801_IRQ_CAPTURE | FM801_IRQ_MPU);
return 0;
}
static int snd_fm801_free(struct fm801 *chip)
{
unsigned short cmdw;
@ -1227,7 +1221,23 @@ static int snd_fm801_create(struct snd_card *card,
if ((err = pci_request_regions(pci, "FM801")) < 0)
return err;
chip->port = pci_resource_start(pci, 0);
if ((tea575x_tuner & TUNER_ONLY) == 0) {
if (pci->revision >= 0xb1) /* FM801-AU */
chip->multichannel = 1;
if (!(chip->tea575x_tuner & TUNER_ONLY)) {
if (reset_codec(chip) < 0) {
dev_info(chip->card->dev,
"Primary AC'97 codec not found, assume SF64-PCR (tuner-only)\n");
chip->tea575x_tuner = 3 | TUNER_ONLY;
} else {
snd_fm801_chip_multichannel_init(chip);
}
}
snd_fm801_chip_init(chip);
if ((chip->tea575x_tuner & TUNER_ONLY) == 0) {
if (devm_request_irq(&pci->dev, pci->irq, snd_fm801_interrupt,
IRQF_SHARED, KBUILD_MODNAME, chip)) {
dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
@ -1238,13 +1248,6 @@ static int snd_fm801_create(struct snd_card *card,
pci_set_master(pci);
}
if (pci->revision >= 0xb1) /* FM801-AU */
chip->multichannel = 1;
snd_fm801_chip_init(chip, 0);
/* init might set tuner access method */
tea575x_tuner = chip->tea575x_tuner;
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_fm801_free(chip);
return err;
@ -1261,15 +1264,15 @@ static int snd_fm801_create(struct snd_card *card,
chip->tea.private_data = chip;
chip->tea.ops = &snd_fm801_tea_ops;
sprintf(chip->tea.bus_info, "PCI:%s", pci_name(pci));
if ((tea575x_tuner & TUNER_TYPE_MASK) > 0 &&
(tea575x_tuner & TUNER_TYPE_MASK) < 4) {
if ((chip->tea575x_tuner & TUNER_TYPE_MASK) > 0 &&
(chip->tea575x_tuner & TUNER_TYPE_MASK) < 4) {
if (snd_tea575x_init(&chip->tea, THIS_MODULE)) {
dev_err(card->dev, "TEA575x radio not found\n");
snd_fm801_free(chip);
return -ENODEV;
}
} else if ((tea575x_tuner & TUNER_TYPE_MASK) == 0) {
unsigned int tuner_only = tea575x_tuner & TUNER_ONLY;
} else if ((chip->tea575x_tuner & TUNER_TYPE_MASK) == 0) {
unsigned int tuner_only = chip->tea575x_tuner & TUNER_ONLY;
/* autodetect tuner connection */
for (tea575x_tuner = 1; tea575x_tuner <= 3; tea575x_tuner++) {
@ -1405,7 +1408,13 @@ static int snd_fm801_resume(struct device *dev)
struct fm801 *chip = card->private_data;
int i;
snd_fm801_chip_init(chip, 1);
if (chip->tea575x_tuner & TUNER_ONLY) {
snd_fm801_chip_init(chip);
} else {
reset_codec(chip);
snd_fm801_chip_multichannel_init(chip);
snd_fm801_chip_init(chip);
}
snd_ac97_resume(chip->ac97);
snd_ac97_resume(chip->ac97_sec);
for (i = 0; i < ARRAY_SIZE(saved_regs); i++)