diff options
| -rw-r--r-- | Documentation/sound/alsa/ALSA-Configuration.txt | 6 | ||||
| -rw-r--r-- | sound/pci/atiixp.c | 45 |
2 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index c54fd7c258d..d853a303ffc 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -242,6 +242,12 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. ac97_clock - AC'97 clock (default = 48000) ac97_quirk - AC'97 workaround for strange hardware See "AC97 Quirk Option" section below. + ac97_codec - Workaround to specify which AC'97 codec + instead of probing. If this works for you + file a bug with your `lspci -vn` output. + -2 -- Force probing. + -1 -- Default behavior. + 0-2 -- Use the specified codec. spdif_aclink - S/PDIF transfer over AC-link (default = 1) This module supports one card and autoprobe. diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c index 86710df71a8..92df811d695 100644 --- a/sound/pci/atiixp.c +++ b/sound/pci/atiixp.c @@ -45,6 +45,7 @@ static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ static int ac97_clock = 48000; static char *ac97_quirk; static int spdif_aclink = 1; +static int ac97_codec = -1; module_param(index, int, 0444); MODULE_PARM_DESC(index, "Index value for ATI IXP controller."); @@ -54,6 +55,8 @@ module_param(ac97_clock, int, 0444); MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); module_param(ac97_quirk, charp, 0444); MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware."); +module_param(ac97_codec, int, 0444); +MODULE_PARM_DESC(ac97_codec, "Specify codec instead of probing."); module_param(spdif_aclink, bool, 0444); MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link."); @@ -293,6 +296,22 @@ static struct pci_device_id snd_atiixp_ids[] = { MODULE_DEVICE_TABLE(pci, snd_atiixp_ids); +struct atiixp_quirk { + unsigned short subvendor; + unsigned short subdevice; + const char *name; + int ac97_codec; +}; + +static struct atiixp_quirk atiixp_quirks[] __devinitdata = { + { + .subvendor = 0x15bd, + .subdevice = 0x3100, + .name = "DFI RS482", + .ac97_codec = 0, + }, + { .subvendor = 0 } /* terminator */ +}; /* * lowlevel functions @@ -553,11 +572,37 @@ static int snd_atiixp_aclink_down(struct atiixp *chip) ATI_REG_ISR_CODEC2_NOT_READY) #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME) +static int ac97_probing_bugs(struct pci_dev *pci) +{ + int i = 0; + + while (atiixp_quirks[i].subvendor) { + if (pci->subsystem_vendor == atiixp_quirks[i].subvendor && + pci->subsystem_device == atiixp_quirks[i].subdevice) { + printk(KERN_INFO "Atiixp quirk for %s. " + "Forcing codec %d\n", atiixp_quirks[i].name, + atiixp_quirks[i].ac97_codec); + return atiixp_quirks[i].ac97_codec; + } + i++; + } + /* this hardware doesn't need workarounds. Probe for codec */ + return -1; +} + static int snd_atiixp_codec_detect(struct atiixp *chip) { int timeout; chip->codec_not_ready_bits = 0; + if (ac97_codec == -1) + ac97_codec = ac97_probing_bugs(chip->pci); + if (ac97_codec >= 0) { + chip->codec_not_ready_bits |= + CODEC_CHECK_BITS ^ (1 << (ac97_codec + 10)); + return 0; + } + atiixp_write(chip, IER, CODEC_CHECK_BITS); /* wait for the interrupts */ timeout = 50; |