diff options
| author |   Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-06-09 15:25:58 -0700 |
|---|---|---|
| committer |   Rodrigo Vivi <rodrigo.vivi@intel.com> | 2017-06-12 09:40:18 -0700 |
| commit | 945f2672ccbb5c92a8a7bf23cba3a68a6b0885e7 (patch) | |
| tree | f5724f7260ae15fe315e33b9311784e74e11c1ae /drivers/gpu/drm/i915/i915_reg.h | |
| parent | drm/i915: Pass atomic state to backlight enable/disable/set callbacks. (diff) | |
| download | linux-dev-945f2672ccbb5c92a8a7bf23cba3a68a6b0885e7.tar.xz linux-dev-945f2672ccbb5c92a8a7bf23cba3a68a6b0885e7.zip | |
drm/i915/cnl: Implement .get_display_clock_speed() for CNL
Add support for reading out the cdclk frequency from the hardware on
CNL. Very similar to BXT, with a few new twists and turns:
* the PLL is now called CDCLK PLL, not DE PLL
* reference clock can be 24 MHz in addition to the 19.2 MHz BXT had
* the ratio now lives in the PLL enable register
* Only 1x and 2x CD2X dividers are supported
v2: Deal with PLL lock bit the same way as BXT/SKL do now
v3: DSSM refclk indicator is bit 31 not 24 (Ander)
v4: Rebased by Rodrigo after Ville's cdclk rework.
v5: Set cdclk to the ref clock as previous platforms. (Imre)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1497047175-27250-1-git-send-email-rodrigo.vivi@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index b6d69e289974..ac3df675b4f3 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6550,6 +6550,9 @@ enum { #define SKL_DFSM_PIPE_B_DISABLE (1 << 21) #define SKL_DFSM_PIPE_C_DISABLE (1 << 28) +#define SKL_DSSM _MMIO(0x51004) +#define CNL_DSSM_CDCLK_PLL_REFCLK_24MHz (1 << 31) + #define GEN7_FF_SLICE_CS_CHICKEN1 _MMIO(0x20e0) #define GEN9_FFSC_PERCTX_PREEMPT_CTRL (1<<14) @@ -8116,6 +8119,8 @@ enum { #define BXT_DE_PLL_ENABLE _MMIO(0x46070) #define BXT_DE_PLL_PLL_ENABLE (1 << 31) #define BXT_DE_PLL_LOCK (1 << 30) +#define CNL_CDCLK_PLL_RATIO(x) (x) +#define CNL_CDCLK_PLL_RATIO_MASK 0xff /* GEN9 DC */ #define DC_STATE_EN _MMIO(0x45504) |