ALSA: x86: Register multiple PCM devices for the LPE audio card

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Now that everything is in place let's register a PCM device for
each port of the display engine. This will make it possible to
actually output audio to multiple displays at the same time. And
it avoids modesets on unrelated displays from clobbering up the
ELD and whatnot for the display currently doing the playback.

v2: Add a PCM per port instead of per pipe
v3: Fix off by one error with port numbers (Pierre-Louis)
    Fix .notify_audio_lpe() prototype (Pierre-Louis)

Cc: Takashi Iwai <tiwai@suse.de>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170427160231.13337-12-ville.syrjala@linux.intel.com
Reviewed-by: Takashi Iwai <tiwai@suse.de>

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This commit is contained in:

Ville Syrjälä 2017-04-27 19:02:30 +03:00

parent b4eb0d522f

commit 8a2d6ae1f7

4 changed files with 92 additions and 66 deletions

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19

drivers/gpu/drm/i915/intel_lpe_audio.c

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6

include/drm/intel_lpe_audio.h

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128

sound/x86/intel_hdmi_audio.c

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7

sound/x86/intel_hdmi_audio.h

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