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ALSA: hda - enable snoop for Intel Cougar Point

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This patch enables snoop, eliminating static during playback.
This patch supersedes the previous Cougar Point audio patch.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Seth Heasley 2010-02-22 17:31:09 -08:00 committed by Takashi Iwai
parent d01aecdf90
commit 32679f95ca
1 changed files with 5 additions and 1 deletions
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6
sound/pci/hda/hda_intel.c
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@ -448,6 +448,7 @@ struct azx {
/* driver types */
enum {
AZX_DRIVER_ICH,
AZX_DRIVER_PCH,
AZX_DRIVER_SCH,
AZX_DRIVER_ATI,
AZX_DRIVER_ATIHDMI,
@ -462,6 +463,7 @@ enum {
static char *driver_short_names[] __devinitdata = {
[AZX_DRIVER_ICH] = "HDA Intel",
[AZX_DRIVER_PCH] = "HDA Intel PCH",
[AZX_DRIVER_SCH] = "HDA Intel MID",
[AZX_DRIVER_ATI] = "HDA ATI SB",
[AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
@ -1064,6 +1066,7 @@ static void azx_init_pci(struct azx *chip)
0x01, NVIDIA_HDA_ENABLE_COHBIT);
break;
case AZX_DRIVER_SCH:
case AZX_DRIVER_PCH:
pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
if (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) {
pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC,
@ -2421,6 +2424,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
if (bdl_pos_adj[dev] < 0) {
switch (chip->driver_type) {
case AZX_DRIVER_ICH:
case AZX_DRIVER_PCH:
bdl_pos_adj[dev] = 1;
break;
default:
@ -2700,7 +2704,7 @@ static struct pci_device_id azx_ids[] = {
/* PCH */
{ PCI_DEVICE(0x8086, 0x3b56), .driver_data = AZX_DRIVER_ICH },
/* CPT */
{ PCI_DEVICE(0x8086, 0x1c20), .driver_data = AZX_DRIVER_ICH },
{ PCI_DEVICE(0x8086, 0x1c20), .driver_data = AZX_DRIVER_PCH },
/* SCH */
{ PCI_DEVICE(0x8086, 0x811b), .driver_data = AZX_DRIVER_SCH },
/* ATI SB 450/600 */