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| author |   Deepak S <deepak.s@intel.com> | 2014-01-30 23:08:16 +0530 |
|---|---|---|
| committer |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-02-04 11:59:19 +0100 |
| commit | 76c3552f9f65005f406cbffe95b981e30ef51428 (patch) | |
| tree | 3fd18f85d5b3ed1a3dfac1d9e025e6f2b40bea2d /drivers/gpu/drm/i915/i915_reg.h | |
| parent | drm/i915: Get rid of acthd based guilty batch search (diff) | |
| download | linux-dev-76c3552f9f65005f406cbffe95b981e30ef51428.tar.xz linux-dev-76c3552f9f65005f406cbffe95b981e30ef51428.zip | |
drm/i915/vlv: WA to fix Voltage not getting dropped to Vmin when Gfx is power gated.
When we enter RC6 and GFX Clocks are off, the voltage remains higher
than Vmin. When we try to set the freq to RPn, it might fail since the
Gfx clocks are down. So to fix this in Gfx idle, Bring the GFX clock up
and set the freq to RPn then move GFx down.
v2: remove vlv_update_rps_cur_delay function. Update commit message (Daniel)
v3: Fix the timeout during wait for gfx clock (Jesse)
v4: addressed comments on set freq and punit wait (Ville)
v5: use wait_for while waiting for GFX clk to be up. (Daniel)
update cur_delay before requesting min_delay. (Ville)
v6: use wait_for while waiting for punit. (Ville)
Signed-off-by: Deepak S <deepak.s@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index abd18cd58aa1..9d0f4f7bbe6a 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4951,6 +4951,10 @@ GEN6_PM_RP_DOWN_THRESHOLD | \ GEN6_PM_RP_DOWN_TIMEOUT) +#define VLV_GTLC_SURVIVABILITY_REG 0x130098 +#define VLV_GFX_CLK_STATUS_BIT (1<<3) +#define VLV_GFX_CLK_FORCE_ON_BIT (1<<2) + #define GEN6_GT_GFX_RC6_LOCKED 0x138104 #define VLV_COUNTER_CONTROL 0x138104 #define VLV_COUNT_RANGE_HIGH (1<<15) |