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ALSA: hda/hdmi: fix max DP-MST dev_num for Intel TGL+ platforms

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Increase the device select range to 4 on platforms supporting
4 concurrent displays.

This fixes a problem in scenario where total of 4 displays are active,
and 3 of these are audio capable DP receivers and connected to a DP-MST
hub. Due to incorrect range for device select, audio could not be played
to the 3rd monitor in DP-MST hub.

BugLink: https://github.com/thesofproject/linux/issues/2798
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20210324172337.51730-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Kai Vehmanen 2021-03-24 19:23:37 +02:00 committed by Takashi Iwai
parent 940ba1f5e1
commit e839fbed26
1 changed files with 11 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
sound/pci/hda/patch_hdmi.c
View File

@ -1848,16 +1848,12 @@ static int hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
*/
if (spec->intel_hsw_fixup) {
/*
* On Intel platforms, device entries number is
* changed dynamically. If there is a DP MST
* hub connected, the device entries number is 3.
* Otherwise, it is 1.
* Here we manually set dev_num to 3, so that
* we can initialize all the device entries when
* bootup statically.
* On Intel platforms, device entries count returned
* by AC_PAR_DEVLIST_LEN is dynamic, and depends on
* the type of receiver that is connected. Allocate pin
* structures based on worst case.
*/
dev_num = 3;
spec->dev_num = 3;
dev_num = spec->dev_num;
} else if (spec->dyn_pcm_assign && codec->dp_mst) {
dev_num = snd_hda_get_num_devices(codec, pin_nid) + 1;
/*
@ -2929,7 +2925,7 @@ 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)
const int *port_map, int port_num, int dev_num)
{
struct hdmi_spec *spec;
int err;
@ -2944,6 +2940,7 @@ static int intel_hsw_common_init(struct hda_codec *codec, hda_nid_t vendor_nid,
spec->port_map = port_map;
spec->port_num = port_num;
spec->intel_hsw_fixup = true;
spec->dev_num = dev_num;
intel_haswell_enable_all_pins(codec, true);
intel_haswell_fixup_enable_dp12(codec);
@ -2969,12 +2966,12 @@ 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);
return intel_hsw_common_init(codec, 0x08, NULL, 0, 3);
}
static int patch_i915_glk_hdmi(struct hda_codec *codec)
{
return intel_hsw_common_init(codec, 0x0b, NULL, 0);
return intel_hsw_common_init(codec, 0x0b, NULL, 0, 3);
}
static int patch_i915_icl_hdmi(struct hda_codec *codec)
@ -2985,7 +2982,7 @@ 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));
return intel_hsw_common_init(codec, 0x02, map, ARRAY_SIZE(map), 3);
}
static int patch_i915_tgl_hdmi(struct hda_codec *codec)
@ -2997,7 +2994,7 @@ 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));
ret = intel_hsw_common_init(codec, 0x02, map, ARRAY_SIZE(map), 4);
if (!ret) {
struct hdmi_spec *spec = codec->spec;