Commit 34a3ef05 authored by LeoLiu-oc's avatar LeoLiu-oc Committed by Zheng Zengkai
Browse files

ALSA: hda: Add Zhaoxin SB HDAC non snoop 

zhaoxin inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I40QDN


CVE: NA

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Add Zhaoxin SB HDAC non snoop path support.

Signed-off-by: default avatarLeoLiu-oc <LeoLiu-oc@zhaoxin.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: default avatarHanjun Guo <guohanjun@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 4da7e4d4

sound/pci/hda/hda_intel.c

+11 −2
Original line number Diff line number Diff line
@@ -240,8 +240,8 @@ MODULE_SUPPORTED_DEVICE("{{Intel, ICH6}," 
			 "{ATI, RV770},"

			 "{VIA, VT8251},"

			 "{VIA, VT8237A},"

			 "{SiS, SIS966},"

			 "{ULI, M5461}}");

			 "{ULI, M5461},"

			 "{ZX, ZhaoxinHDA}}");

MODULE_DESCRIPTION("Intel HDA driver");



#if defined(CONFIG_PM) && defined(CONFIG_VGA_SWITCHEROO)
@@ -1744,6 +1744,15 @@ static void azx_check_snoop_available(struct azx *chip) 
			snoop = false;

	}



	if (azx_get_snoop_type(chip) == AZX_SNOOP_TYPE_NONE &&

		chip->driver_type == AZX_DRIVER_ZHAOXIN) {

		u8 val1;



		pci_read_config_byte(chip->pci, 0x42, &val1);

		if (!(val1 & 0x80) && chip->pci->revision == 0x20)

			snoop = false;

	}



	if (chip->driver_caps & AZX_DCAPS_SNOOP_OFF)

		snoop = false;