diff options
| author | Dave Airlie <airlied@redhat.com> | 2013-12-12 10:38:08 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2013-12-12 10:38:08 +1000 |
| commit | 62a3a12667ac551c0251d6437372c34a98dd991c (patch) | |
| tree | 6069ab80bdc41987898b1e2947b5cdc6edc9a97f /drivers/gpu/drm/i915/intel_panel.c | |
| parent | 9538e10086bd1301fe915683b1ba0a1de66d7483 (diff) | |
| parent | 596cc11e7a4a89bf6c45f955402d0bd0c7d51f13 (diff) | |
Merge branch 'bdw-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
As promised bdw fixes come separate for now. Just a few minior things.
* 'bdw-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915/bdw: PIPE_[BC] I[ME]R moved to powerwell
drm/i915/bdw: Limit GTT to 2GB
drm/i915/bdw: Add comment about gen8 HWS PGA
drm/i915/bdw: Free correct number of ppgtt pages
drm/i915/bdw: Do gen6 style reset for gen8
drm/i915/bdw: GEN8 backlight support
drm/i915/bdw: Add BDW to ULT macro
Diffstat (limited to 'drivers/gpu/drm/i915/intel_panel.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_panel.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index f161ac02c4f6..e6f782d1c669 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -451,7 +451,9 @@ static u32 intel_panel_get_backlight(struct drm_device *dev, spin_lock_irqsave(&dev_priv->backlight.lock, flags); - if (HAS_PCH_SPLIT(dev)) { + if (IS_BROADWELL(dev)) { + val = I915_READ(BLC_PWM_PCH_CTL2) & BACKLIGHT_DUTY_CYCLE_MASK; + } else if (HAS_PCH_SPLIT(dev)) { val = I915_READ(BLC_PWM_CPU_CTL) & BACKLIGHT_DUTY_CYCLE_MASK; } else { if (IS_VALLEYVIEW(dev)) @@ -479,6 +481,13 @@ static u32 intel_panel_get_backlight(struct drm_device *dev, return val; } +static void intel_bdw_panel_set_backlight(struct drm_device *dev, u32 level) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + u32 val = I915_READ(BLC_PWM_PCH_CTL2) & ~BACKLIGHT_DUTY_CYCLE_MASK; + I915_WRITE(BLC_PWM_PCH_CTL2, val | level); +} + static void intel_pch_panel_set_backlight(struct drm_device *dev, u32 level) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -496,7 +505,9 @@ static void intel_panel_actually_set_backlight(struct drm_device *dev, DRM_DEBUG_DRIVER("set backlight PWM = %d\n", level); level = intel_panel_compute_brightness(dev, pipe, level); - if (HAS_PCH_SPLIT(dev)) + if (IS_BROADWELL(dev)) + return intel_bdw_panel_set_backlight(dev, level); + else if (HAS_PCH_SPLIT(dev)) return intel_pch_panel_set_backlight(dev, level); if (is_backlight_combination_mode(dev)) { @@ -666,7 +677,16 @@ void intel_panel_enable_backlight(struct intel_connector *connector) POSTING_READ(reg); I915_WRITE(reg, tmp | BLM_PWM_ENABLE); - if (HAS_PCH_SPLIT(dev) && + if (IS_BROADWELL(dev)) { + /* + * Broadwell requires PCH override to drive the PCH + * backlight pin. The above will configure the CPU + * backlight pin, which we don't plan to use. + */ + tmp = I915_READ(BLC_PWM_PCH_CTL1); + tmp |= BLM_PCH_OVERRIDE_ENABLE | BLM_PCH_PWM_ENABLE; + I915_WRITE(BLC_PWM_PCH_CTL1, tmp); + } else if (HAS_PCH_SPLIT(dev) && !(dev_priv->quirks & QUIRK_NO_PCH_PWM_ENABLE)) { tmp = I915_READ(BLC_PWM_PCH_CTL1); tmp |= BLM_PCH_PWM_ENABLE; |