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| author |   Bastiaan Jacques <b.jacques@planet.nl> | 2006-04-18 17:04:04 +0200 |
|---|---|---|
| committer |   Jaroslav Kysela <perex@suse.cz> | 2006-04-27 21:10:21 +0200 |
| commit | 8263c65fbee1347b2ab1d8c9380946808d09f579 (patch) | |
| tree | 4b503b7ea92011bd6f3df65967268ef98c78a9f3 | |
| parent | [ALSA] Fix typos and add information about Jack support to Audiophile-Usb.txt (diff) | |
| download | linux-dev-8263c65fbee1347b2ab1d8c9380946808d09f579.tar.xz linux-dev-8263c65fbee1347b2ab1d8c9380946808d09f579.zip | |
[ALSA] via82xx: add support for VIA VT8251 (AC'97)
Add support for VIA VT8251 AC'97. Includes a workaround which ensures sound
won't stop playing after one second of playback.
Signed-off-by: Bastiaan Jacques <b.jacques@planet.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/pci/via82xx.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c index 0f171dd1377b..1b740dd4825b 100644 --- a/sound/pci/via82xx.c +++ b/sound/pci/via82xx.c @@ -123,6 +123,7 @@ module_param(enable, bool, 0444); #define VIA_REV_8233A 0x40 /* 1 rec, 1 multi-pb, spdf */ #define VIA_REV_8235 0x50 /* 2 rec, 4 pb, 1 multi-pb, spdif */ #define VIA_REV_8237 0x60 +#define VIA_REV_8251 0x70 /* * Direct registers @@ -863,8 +864,15 @@ static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *subst status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); if (!(status & VIA_REG_STAT_ACTIVE)) { - res = 0; - goto unlock; + /* An apparent bug in the 8251 is worked around by sending + * a REG_CTRL_START. */ + if (chip->revision == VIA_REV_8251) + snd_via82xx_pcm_trigger(substream, + SNDRV_PCM_TRIGGER_START); + else { + res = 0; + goto unlock; + } } if (count & 0xffffff) { idx = count >> 24; @@ -2313,6 +2321,7 @@ static struct via823x_info via823x_cards[] __devinitdata = { { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A }, { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 }, { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 }, + { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 }, }; /* @@ -2342,6 +2351,7 @@ static int __devinit check_dxs_list(struct pci_dev *pci) { .subvendor = 0x1043, .subdevice = 0x810d, .action = VIA_DXS_SRC }, /* ASUS */ { .subvendor = 0x1043, .subdevice = 0x812a, .action = VIA_DXS_SRC }, /* ASUS A8V Deluxe */ { .subvendor = 0x1043, .subdevice = 0x8174, .action = VIA_DXS_SRC }, /* ASUS */ + { .subvendor = 0x1043, .subdevice = 0x81b9, .action = VIA_DXS_SRC }, /* ASUS A8V-MX */ { .subvendor = 0x1071, .subdevice = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */ { .subvendor = 0x1071, .subdevice = 0x8399, .action = VIA_DXS_NO_VRA }, /* Umax AB 595T (VIA K8N800A - VT8237) */ { .subvendor = 0x10cf, .subdevice = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */ |