diff options
| author | Eric Anholt <eric@anholt.net> | 2011-12-21 10:17:08 -0800 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2011-12-21 10:24:33 -0800 |
| commit | 3ce0c08b5a9e5a58366e9f1b9d95b27d9f01e188 (patch) | |
| tree | 0d6c5a9d9daa37256a3c4c9666b5bea9361c28e6 | |
| parent | 8b51e3908c77a58b38c0af64d9396b917b7d0df1 (diff) | |
drm/i915: Set two chicken bits implicated in missed IRQs on Ivybridge.
They don't fix our problems alone, but we're told to set them.
Signed-off-by: Eric Anholt <eric@anholt.net>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 9d15474ca69..9a97535aaa6 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2883,6 +2883,10 @@ #define ILK_DPFC_DIS1 (1<<8) #define ILK_DPFC_DIS2 (1<<9) +#define IVB_CHICKEN3 0x4200c +# define CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE (1 << 5) +# define CHICKEN3_DGMG_DONE_FIX_DISABLE (1 << 2) + #define DISP_ARB_CTL 0x45000 #define DISP_TILE_SURFACE_SWIZZLING (1<<13) #define DISP_FBC_WM_DIS (1<<15) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 8a61b819b4b..1fe0c672cc8 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -8252,6 +8252,10 @@ static void ivybridge_init_clock_gating(struct drm_device *dev) I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE); + I915_WRITE(IVB_CHICKEN3, + CHICKEN3_DGMG_REQ_OUT_FIX_DISABLE | + CHICKEN3_DGMG_DONE_FIX_DISABLE); + for_each_pipe(pipe) { I915_WRITE(DSPCNTR(pipe), I915_READ(DSPCNTR(pipe)) | |