drm/i915: set AUD_CONFIG N_value_index for DisplayPort

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It should be programmed to "0" for HDMI or "1" for DisplayPort.

This enables DisplayPort audio for

- HP EliteBook 8460p
  (whose BIOS does not set the N_value_index bit for us)

- DisplayPort monitor hot plugged after boot
  (otherwise most BIOS will fill the N_value_index bit for us)

Tested-by: Robert Lemaire <rlemaire@suse.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

This commit is contained in:

Wu Fengguang 2012-01-06 14:41:31 -06:00 • committed by Daniel Vetter

parent 6dc0e816bb

commit b6daa025b1

2 changed files with 19 additions and 1 deletions

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12

drivers/gpu/drm/i915/i915_reg.h

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8

drivers/gpu/drm/i915/intel_display.c

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