diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_drv.h | 2 |
3 files changed, 18 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 338570c8e0dc..0fb55429bb95 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -80,6 +80,16 @@ struct intel_limit { /* FDI */ #define IRONLAKE_FDI_FREQ 2700000 /* in kHz for mode->clock */ +int +intel_pch_rawclk(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + WARN_ON(!HAS_PCH_SPLIT(dev)); + + return I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK; +} + static bool intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc, int target, int refclk, intel_clock_t *match_clock, diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index da526c9a9cef..adfb98cb7ba9 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -2711,8 +2711,12 @@ intel_dp_init(struct drm_device *dev, int output_reg, enum port port) (final.t8 << PANEL_LIGHT_ON_DELAY_SHIFT); pp_off = (final.t9 << PANEL_LIGHT_OFF_DELAY_SHIFT) | (final.t10 << PANEL_POWER_DOWN_DELAY_SHIFT); - pp_div = (pp_div & PP_REFERENCE_DIVIDER_MASK) | - (DIV_ROUND_UP(final.t11_t12, 1000) << PANEL_POWER_CYCLE_DELAY_SHIFT); + /* Compute the divisor for the pp clock, simply match the Bspec + * formula. */ + pp_div = ((100 * intel_pch_rawclk(dev))/2 - 1) + << PP_REFERENCE_DIVIDER_SHIFT; + pp_div |= (DIV_ROUND_UP(final.t11_t12, 1000) + << PANEL_POWER_CYCLE_DELAY_SHIFT); /* Haswell doesn't have any port selection bits for the panel * power sequence any more. */ diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 3b590baad96f..c2e439b0d983 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -405,6 +405,8 @@ struct intel_fbc_work { int interval; }; +int intel_pch_rawclk(struct drm_device *dev); + int intel_connector_update_modes(struct drm_connector *connector, struct edid *edid); int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter); |