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drm/i915: use backlight legacy combination mode also for i915gm/i945gm

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i915gm and i945gm also seem to use and need the legacy combination mode
bit in BLC_PWM_CTL.

v2: Also do this for i915gm (Ville).

Reported-and-tested-by: Luis Ortega <luiorpe1@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=75001
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula 2014-02-25 13:11:47 +02:00
parent 0414855fdc
commit b6ab66aa5d
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/intel_panel.c
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@ -698,7 +698,7 @@ static void i9xx_enable_backlight(struct intel_connector *connector)
freq /= 0xff;
ctl = freq << 17;
if (IS_GEN2(dev) && panel->backlight.combination_mode)
if (panel->backlight.combination_mode)
ctl |= BLM_LEGACY_MODE;
if (IS_PINEVIEW(dev) && panel->backlight.active_low_pwm)
ctl |= BLM_POLARITY_PNV;
@ -979,7 +979,7 @@ static int i9xx_setup_backlight(struct intel_connector *connector)
ctl = I915_READ(BLC_PWM_CTL);
if (IS_GEN2(dev))
if (IS_GEN2(dev) || IS_I915GM(dev) || IS_I945GM(dev))
panel->backlight.combination_mode = ctl & BLM_LEGACY_MODE;
if (IS_PINEVIEW(dev))