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drm/i915/bdw: Implement edp PSR workarounds

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This implements a workaround for PSR dealing with some vblank issue.

WaPsrDPAMaskVBlankInSRD && WaPsrDPRSUnmaskVBlankInSRD

v2: forgot to git add bogus whitespace fix

v3: Update with workaround names.
Use for_each_pipe() and CHICKEN_PIPESL_1(pipe) macro (Ville)

Cc: Art Runyan <arthur.j.runyan@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Jesse Barnes <jbarnes@virtuosugeek.org>
[danvet: Kill redundant IS_BDW check and remove the copious amount of
uneeded lines added.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2013-11-02 21:07:54 -07:00 committed by Daniel Vetter
parent e64c4a1b8a
commit fe4ab3ceef
2 changed files with 18 additions and 0 deletions
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6
drivers/gpu/drm/i915/i915_reg.h
View File

@ -4113,8 +4113,14 @@
# define CHICKEN3_DGMG_DONE_FIX_DISABLE (1 << 2)
#define CHICKEN_PAR1_1 0x42080
#define DPA_MASK_VBLANK_SRD (1 << 15)
#define FORCE_ARB_IDLE_PLANES (1 << 14)
#define _CHICKEN_PIPESL_1_A 0x420b0
#define _CHICKEN_PIPESL_1_B 0x420b4
#define DPRS_MASK_VBLANK_SRD (1 << 0)
#define CHICKEN_PIPESL_1(pipe) _PIPE(pipe, _CHICKEN_PIPESL_1_A, _CHICKEN_PIPESL_1_B)
#define DISP_ARB_CTL 0x45000
#define DISP_TILE_SURFACE_SWIZZLING (1<<13)
#define DISP_FBC_WM_DIS (1<<15)

12
drivers/gpu/drm/i915/intel_pm.c
View File

@ -5277,6 +5277,7 @@ static void lpt_suspend_hw(struct drm_device *dev)
static void gen8_init_clock_gating(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
enum pipe i;
I915_WRITE(WM3_LP_ILK, 0);
I915_WRITE(WM2_LP_ILK, 0);
@ -5287,6 +5288,17 @@ static void gen8_init_clock_gating(struct drm_device *dev)
/* WaSwitchSolVfFArbitrationPriority */
I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL);
/* WaPsrDPAMaskVBlankInSRD */
I915_WRITE(CHICKEN_PAR1_1,
I915_READ(CHICKEN_PAR1_1) | DPA_MASK_VBLANK_SRD);
/* WaPsrDPRSUnmaskVBlankInSRD */
for_each_pipe(i) {
I915_WRITE(CHICKEN_PIPESL_1(i),
I915_READ(CHICKEN_PIPESL_1(i) |
DPRS_MASK_VBLANK_SRD));
}
}
static void haswell_init_clock_gating(struct drm_device *dev)