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drm/i915: hsw backlight registers need transcoder instead of pipe 

v2: Make TRANSCODER_EDP handling more explicit. (Imre)

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jani Nikula 2013-04-25 16:49:25 +03:00 committed by Daniel Vetter
parent 81a078092e
commit 35ffda4883
2 changed files with 10 additions and 1 deletions
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4
drivers/gpu/drm/i915/i915_reg.h
View File

@ -2087,6 +2087,10 @@
#define BLM_PIPE_A (0 << 29)
#define BLM_PIPE_B (1 << 29)
#define BLM_PIPE_C (2 << 29) /* ivb + */
#define BLM_TRANSCODER_A BLM_PIPE_A /* hsw */
#define BLM_TRANSCODER_B BLM_PIPE_B
#define BLM_TRANSCODER_C BLM_PIPE_C
#define BLM_TRANSCODER_EDP (3 << 29)
#define BLM_PIPE(pipe) ((pipe) << 29)
#define BLM_POLARITY_I965 (1 << 28) /* gen4 only */
#define BLM_PHASE_IN_INTERUPT_STATUS (1 << 26)

7
drivers/gpu/drm/i915/intel_panel.c
View File

@ -344,6 +344,8 @@ void intel_panel_enable_backlight(struct drm_device *dev,
enum pipe pipe)
{
struct drm_i915_private *dev_priv = dev->dev_private;
enum transcoder cpu_transcoder =
intel_pipe_to_cpu_transcoder(dev_priv, pipe);
unsigned long flags;
spin_lock_irqsave(&dev_priv->backlight.lock, flags);
@ -374,7 +376,10 @@ void intel_panel_enable_backlight(struct drm_device *dev,
else
tmp &= ~BLM_PIPE_SELECT;
tmp |= BLM_PIPE(pipe);
if (cpu_transcoder == TRANSCODER_EDP)
tmp |= BLM_TRANSCODER_EDP;
else
tmp |= BLM_PIPE(cpu_transcoder);
tmp &= ~BLM_PWM_ENABLE;
I915_WRITE(reg, tmp);