diff options
| -rw-r--r-- | sound/pci/intel8x0.c | 68 |
1 files changed, 52 insertions, 16 deletions
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c index 19d3391e229f..b37bd268301f 100644 --- a/sound/pci/intel8x0.c +++ b/sound/pci/intel8x0.c @@ -2287,23 +2287,23 @@ static void do_ali_reset(struct intel8x0 *chip) iputdword(chip, ICHREG(ALI_INTERRUPTSR), 0x00000000); } -static int snd_intel8x0_ich_chip_init(struct intel8x0 *chip, int probing) -{ - unsigned long end_time; - unsigned int cnt, status, nstatus; - - /* put logic to right state */ - /* first clear status bits */ - status = ICH_RCS | ICH_MCINT | ICH_POINT | ICH_PIINT; - if (chip->device_type == DEVICE_NFORCE) - status |= ICH_NVSPINT; - cnt = igetdword(chip, ICHREG(GLOB_STA)); - iputdword(chip, ICHREG(GLOB_STA), cnt & status); +#ifdef CONFIG_SND_AC97_POWER_SAVE +static struct snd_pci_quirk ich_chip_reset_mode[] = { + SND_PCI_QUIRK(0x1014, 0x051f, "Thinkpad R32", 1), + { } /* end */ +}; +static int snd_intel8x0_ich_chip_cold_reset(struct intel8x0 *chip) +{ + unsigned int cnt; /* ACLink on, 2 channels */ + + if (snd_pci_quirk_lookup(chip->pci, ich_chip_reset_mode)) + return -EIO; + cnt = igetdword(chip, ICHREG(GLOB_CNT)); cnt &= ~(ICH_ACLINK | ICH_PCM_246_MASK); -#ifdef CONFIG_SND_AC97_POWER_SAVE + /* do cold reset - the full ac97 powerdown may leave the controller * in a warm state but actually it cannot communicate with the codec. */ @@ -2312,22 +2312,58 @@ static int snd_intel8x0_ich_chip_init(struct intel8x0 *chip, int probing) udelay(10); iputdword(chip, ICHREG(GLOB_CNT), cnt | ICH_AC97COLD); msleep(1); + return 0; +} +#define snd_intel8x0_ich_chip_can_cold_reset(chip) \ + (!snd_pci_quirk_lookup(chip->pci, ich_chip_reset_mode)) #else +#define snd_intel8x0_ich_chip_cold_reset(x) do { } while (0) +#define snd_intel8x0_ich_chip_can_cold_reset(chip) (0) +#endif + +static int snd_intel8x0_ich_chip_reset(struct intel8x0 *chip) +{ + unsigned long end_time; + unsigned int cnt; + /* ACLink on, 2 channels */ + cnt = igetdword(chip, ICHREG(GLOB_CNT)); + cnt &= ~(ICH_ACLINK | ICH_PCM_246_MASK); /* finish cold or do warm reset */ cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM; iputdword(chip, ICHREG(GLOB_CNT), cnt); end_time = (jiffies + (HZ / 4)) + 1; do { if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0) - goto __ok; + return 0; schedule_timeout_uninterruptible(1); } while (time_after_eq(end_time, jiffies)); snd_printk(KERN_ERR "AC'97 warm reset still in progress? [0x%x]\n", igetdword(chip, ICHREG(GLOB_CNT))); return -EIO; +} + +static int snd_intel8x0_ich_chip_init(struct intel8x0 *chip, int probing) +{ + unsigned long end_time; + unsigned int status, nstatus; + unsigned int cnt; + int err; + + /* put logic to right state */ + /* first clear status bits */ + status = ICH_RCS | ICH_MCINT | ICH_POINT | ICH_PIINT; + if (chip->device_type == DEVICE_NFORCE) + status |= ICH_NVSPINT; + cnt = igetdword(chip, ICHREG(GLOB_STA)); + iputdword(chip, ICHREG(GLOB_STA), cnt & status); + + if (snd_intel8x0_ich_chip_can_cold_reset(chip)) + err = snd_intel8x0_ich_chip_cold_reset(chip); + else + err = snd_intel8x0_ich_chip_reset(chip); + if (err < 0) + return err; - __ok: -#endif if (probing) { /* wait for any codec ready status. * Once it becomes ready it should remain ready |