From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Mon, 30 Nov 2015 14:23:42 +0000 (+0200)
Subject: drm/i915: Fix VBT backlight Hz to PWM conversion for PNV
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=245f586876eefc55438f0d65856fbe15de8dadca;p=linux-beck.git

drm/i915: Fix VBT backlight Hz to PWM conversion for PNV

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@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448893432-6978-2-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
---

diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 2b25497333de..c3d3bba97651 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -1343,7 +1343,7 @@ 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);