diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_panel.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index c3d3bba..d4beac3 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -1352,13 +1352,19 @@ static u32 i9xx_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz) /* * Gen4: This value represents the period of the PWM stream in display core - * clocks multiplied by 128. + * clocks ([DevCTG] HRAW clocks) multiplied by 128. + * */ static u32 i965_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz) { struct drm_device *dev = connector->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; - int clock = 1000 * dev_priv->display.get_display_clock_speed(dev); + int clock; + + if (IS_G4X(dev_priv)) + clock = MHz(intel_hrawclk(dev)); + else + clock = 1000 * dev_priv->display.get_display_clock_speed(dev); return clock / (pwm_freq_hz * 128); } |