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ALSA: hda/hdmi: Disable silent stream on GLK 

The silent stream stuff recurses back into i915 audio
component .get_power() from the .pin_eld_notify() hook.
On GLK this will deadlock as i915 may already be holding
the relevant modeset locks during .pin_eld_notify() and
the GLK audio vs. CDCLK workaround will try to grab the
same locks from .get_power().

Until someone comes up with a better fix just disable the
silent stream support on GLK.

Cc: stable@vger.kernel.org
Cc: Harsha Priya <harshapriya.n@intel.com>
Cc: Emmanuel Jillela <emmanuel.jillela@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2623
Fixes: 951894cf30 ("ALSA: hda/hdmi: Add Intel silent stream support")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211222145350.24342-1-ville.syrjala@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Ville Syrjälä 2021-12-22 16:53:50 +02:00 committed by Takashi Iwai
parent 5dcdc4600c
commit 6c3a0c3913
1 changed files with 15 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
sound/pci/hda/patch_hdmi.c
View File

@ -2947,7 +2947,8 @@ static int parse_intel_hdmi(struct hda_codec *codec)
/* Intel Haswell and onwards; audio component with eld notifier */
static int intel_hsw_common_init(struct hda_codec *codec, hda_nid_t vendor_nid,
const int *port_map, int port_num, int dev_num)
const int *port_map, int port_num, int dev_num,
bool send_silent_stream)
{
struct hdmi_spec *spec;
int err;
@ -2980,7 +2981,7 @@ static int intel_hsw_common_init(struct hda_codec *codec, hda_nid_t vendor_nid,
* Enable silent stream feature, if it is enabled via
* module param or Kconfig option
*/
if (enable_silent_stream)
if (send_silent_stream)
spec->send_silent_stream = true;
return parse_intel_hdmi(codec);
@ -2988,12 +2989,18 @@ static int intel_hsw_common_init(struct hda_codec *codec, hda_nid_t vendor_nid,
static int patch_i915_hsw_hdmi(struct hda_codec *codec)
{
return intel_hsw_common_init(codec, 0x08, NULL, 0, 3);
return intel_hsw_common_init(codec, 0x08, NULL, 0, 3,
enable_silent_stream);
}
static int patch_i915_glk_hdmi(struct hda_codec *codec)
{
return intel_hsw_common_init(codec, 0x0b, NULL, 0, 3);
/*
* Silent stream calls audio component .get_power() from
* .pin_eld_notify(). On GLK this will deadlock in i915 due
* to the audio vs. CDCLK workaround.
*/
return intel_hsw_common_init(codec, 0x0b, NULL, 0, 3, false);
}
static int patch_i915_icl_hdmi(struct hda_codec *codec)
@ -3004,7 +3011,8 @@ static int patch_i915_icl_hdmi(struct hda_codec *codec)
*/
static const int map[] = {0x0, 0x4, 0x6, 0x8, 0xa, 0xb};
return intel_hsw_common_init(codec, 0x02, map, ARRAY_SIZE(map), 3);
return intel_hsw_common_init(codec, 0x02, map, ARRAY_SIZE(map), 3,
enable_silent_stream);
}
static int patch_i915_tgl_hdmi(struct hda_codec *codec)
@ -3016,7 +3024,8 @@ static int patch_i915_tgl_hdmi(struct hda_codec *codec)
static const int map[] = {0x4, 0x6, 0x8, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
int ret;
ret = intel_hsw_common_init(codec, 0x02, map, ARRAY_SIZE(map), 4);
ret = intel_hsw_common_init(codec, 0x02, map, ARRAY_SIZE(map), 4,
enable_silent_stream);
if (!ret) {
struct hdmi_spec *spec = codec->spec;