[Intel-gfx] [PATCH 01/11] drm/i915: Fix VBT backlight Hz to PWM conversion for PNV

ville.syrjala at linux.intel.com ville.syrjala at linux.intel.com
Mon Nov 30 06:23:42 PST 2015


From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Convert the MHz number coming from intel_rawclk() into Hz in
i9xx_hz_to_pwm() on PNV. Otherwise we'll get something totally
bogus as a result.

Fixes: aa17cdb4f836 ("drm/i915: initialize backlight max from VBT")
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_panel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index a24df35e11e7..ea528ca854e8 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -1335,7 +1335,7 @@ static u32 i9xx_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
 	int clock;
 
 	if (IS_PINEVIEW(dev))
-		clock = intel_hrawclk(dev);
+		clock = MHz(intel_hrawclk(dev));
 	else
 		clock = 1000 * dev_priv->display.get_display_clock_speed(dev);
 
-- 
2.4.10



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