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drm/i915: Set two chicken bits implicated in missed IRQs on Ivybridge.

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They don't fix our problems alone, but we're told to set them.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Eric Anholt 2011-12-21 10:31:09 -08:00 committed by Keith Packard
parent 8ea3086422
commit 116ac8d261
2 changed files with 8 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_reg.h
View file

@ -3020,6 +3020,10 @@
#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)

4
drivers/gpu/drm/i915/intel_display.c
View file

@ -8450,6 +8450,10 @@ 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)) |