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Commit 32679f95 authored by Seth Heasley's avatar Seth Heasley Committed by Takashi Iwai
Browse files

ALSA: hda - enable snoop for Intel Cougar Point 



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

Signed-off-by: default avatarSeth Heasley <seth.heasley@intel.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent d01aecdf

sound/pci/hda/hda_intel.c

+5 −1
Original line number Diff line number Diff line
@@ -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 */