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Commit e6b2627c authored by Jani Nikula's avatar Jani Nikula Committed by Daniel Vetter
Browse files

drm/i915: spt does not have pch backlight override bit 



SPT is always in the PCH override mode, and the bit MBZ. Only set
override on LPT.

v2: check for PCH version (Ville)

Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent d9ceb816

drivers/gpu/drm/i915/intel_panel.c

+3 −2
Original line number Original line Diff line number Diff line
@@ -775,7 +775,8 @@ static void bdw_enable_backlight(struct intel_connector *connector) 
	if (panel->backlight.active_low_pwm)

	if (panel->backlight.active_low_pwm)

		pch_ctl1 |= BLM_PCH_POLARITY;

		pch_ctl1 |= BLM_PCH_POLARITY;





	/* BDW always uses the pch pwm controls. */

	/* After LPT, override is the default. */

	if (HAS_PCH_LPT(dev_priv))

		pch_ctl1 |= BLM_PCH_OVERRIDE_ENABLE;

		pch_ctl1 |= BLM_PCH_OVERRIDE_ENABLE;





	I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);

	I915_WRITE(BLC_PWM_PCH_CTL1, pch_ctl1);