d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix backlight for ivybridge based laptops (and whatever else comes through

Browse Source 
this codepath.)

(1<<30) is documented as BLM_PCH_OVERRIDE_ENABLE, which the current
i915 driver in Linux only sets for broadwell chips.

This fixes the backlight control on the Lenovo X230.

Approved by:	kib
Obtained from:	Linux 7aa1e7f06d6ea1bce3b27630d50769d13da28b1a
This commit is contained in:
Adrian Chadd 2015-01-31 02:13:25 +00:00
parent c0a9702f95
commit 29fa5c67e4
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sys/dev/drm2/i915/intel_display.c
View File

@ -6995,7 +6995,7 @@ static void ivb_pch_pwm_override(struct drm_device *dev)
*/
I915_WRITE(BLC_PWM_CPU_CTL2, PWM_ENABLE);
I915_WRITE(BLC_PWM_CPU_CTL, 0);
I915_WRITE(BLC_PWM_PCH_CTL1, PWM_ENABLE | (1<<30));
I915_WRITE(BLC_PWM_PCH_CTL1, PWM_ENABLE);
}
void intel_modeset_init_hw(struct drm_device *dev)