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authorDaniel Vetter <daniel.vetter@ffwll.ch>2012-06-27 16:43:36 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2012-06-27 20:26:30 +0200
commit7aa1e7f06d6ea1bce3b27630d50769d13da28b1a (patch)
treef65c61933277d7375c4bd7035bf2e4bba5c94b88
parent6db65cbb941f9d433659bdad02b307f6d94465df (diff)
Revert "drm/i915: allow PCH PWM override on IVB"
This reverts commit f82cfb6bcda164ef3a66b8c3fc549b1f9bdd09ad. This breaks the backlight controls on my IVB asus zenbook with an eDP panel. I guess the right fix would be to read this bit and use either the pch or the cpu register to frob the backlight values. But that is stuff for -next. Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
-rw-r--r--drivers/gpu/drm/i915/intel_display.c16
1 files changed, 0 insertions, 16 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index a7c727d0c105..a8538ac0299d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6921,19 +6921,6 @@ static void i915_disable_vga(struct drm_device *dev)
POSTING_READ(vga_reg);
}
-static void ivb_pch_pwm_override(struct drm_device *dev)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
-
- /*
- * IVB has CPU eDP backlight regs too, set things up to let the
- * PCH regs control the backlight
- */
- I915_WRITE(BLC_PWM_CPU_CTL2, PWM_ENABLE);
- I915_WRITE(BLC_PWM_CPU_CTL, 0);
- I915_WRITE(BLC_PWM_PCH_CTL1, PWM_ENABLE | (1<<30));
-}
-
void intel_modeset_init_hw(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -6950,9 +6937,6 @@ void intel_modeset_init_hw(struct drm_device *dev)
gen6_enable_rps(dev_priv);
gen6_update_ring_freq(dev_priv);
}
-
- if (IS_IVYBRIDGE(dev))
- ivb_pch_pwm_override(dev);
}
void intel_modeset_init(struct drm_device *dev)