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authorBastiaan Jacques <b.jacques@planet.nl>2006-04-18 17:04:04 +0200
committerJaroslav Kysela <perex@suse.cz>2006-04-27 21:10:21 +0200
commit8263c65fbee1347b2ab1d8c9380946808d09f579 (patch)
tree4b503b7ea92011bd6f3df65967268ef98c78a9f3 /sound
parent[ALSA] Fix typos and add information about Jack support to Audiophile-Usb.txt (diff)
downloadlinux-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>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/via82xx.c14
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 */