From: Ville Syrjälä Date: Wed, 2 Mar 2016 15:22:16 +0000 (+0200) Subject: drm/i915: Read out hrawclk from CCK on vlv/chv X-Git-Tag: next-20160307~67^2~4 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=35d38d1f17b853a014b500350ab3135790d47ef3;p=karo-tx-linux.git drm/i915: Read out hrawclk from CCK on vlv/chv Currently we assume that hrawclk is 200MHz on VLV/CHV. That should be true always, but just to avoid such asumptions we can read out the actual frequency from CCK. Signed-off-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1456932138-14004-5-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Imre Deak --- diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 65f9bb9754ab..7dfc4007f3fa 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -786,6 +786,7 @@ enum skl_disp_power_wells { #define DSI_PLL_M1_DIV_MASK (0x1ff << 0) #define CCK_CZ_CLOCK_CONTROL 0x62 #define CCK_DISPLAY_CLOCK_CONTROL 0x6b +#define CCK_DISPLAY_REF_CLOCK_CONTROL 0x6c #define CCK_TRUNK_FORCE_ON (1 << 17) #define CCK_TRUNK_FORCE_OFF (1 << 16) #define CCK_FREQUENCY_STATUS (0x1f << 8) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index dd9118ba3062..62d36a7b3398 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -178,7 +178,8 @@ intel_pch_rawclk(struct drm_i915_private *dev_priv) static int intel_vlv_hrawclk(struct drm_i915_private *dev_priv) { - return 200000; + return vlv_get_cck_clock_hpll(dev_priv, "hrawclk", + CCK_DISPLAY_REF_CLOCK_CONTROL); } static int