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| author | Rander Wang <rander.wang@linux.intel.com> | 2019-09-30 09:29:45 -0500 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-10-07 03:58:48 +0200 |
| commit | 130bce3afbbbbe585cba8604f2124c28e8d86fb0 (patch) | |
| tree | 90bab407ce5ca116478409761bc9d5e33986df90 /include/sound/hda_register.h | |
| parent | 1099f48457d06b816359fb43ac32a4a07e33219b (diff) | |
| download | linux-130bce3afbbbbe585cba8604f2124c28e8d86fb0.tar.gz linux-130bce3afbbbbe585cba8604f2124c28e8d86fb0.tar.bz2 linux-130bce3afbbbbe585cba8604f2124c28e8d86fb0.zip | |
ALSA: hdac: clear link output stream mapping
Fix potential DMA hang upon starting playback on devices in HDA mode
on Intel platforms (Gemini Lake/Whiskey Lake/Comet Lake/Ice Lake). It
doesn't affect platforms before Gemini Lake or any Intel device in
non-HDA mode.
The reset value for the LOSDIV register is all output streams valid.
Clear this register to invalidate non-existent streams when the bus
is powered up.
Signed-off-by: Rander Wang <rander.wang@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190930142945.7805-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/hda_register.h')
| -rw-r--r-- | include/sound/hda_register.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/sound/hda_register.h b/include/sound/hda_register.h index 0fd39295b426..057d2a2d0bd0 100644 --- a/include/sound/hda_register.h +++ b/include/sound/hda_register.h @@ -264,6 +264,9 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 }; #define AZX_REG_ML_LOUTPAY 0x20 #define AZX_REG_ML_LINPAY 0x30 +/* bit0 is reserved, with BIT(1) mapping to stream1 */ +#define ML_LOSIDV_STREAM_MASK 0xFFFE + #define ML_LCTL_SCF_MASK 0xF #define AZX_MLCTL_SPA (0x1 << 16) #define AZX_MLCTL_CPA (0x1 << 23) |