Date: Sat, 31 Jan 2015 02:13:26 +0000 (UTC) From: Adrian Chadd <adrian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r277959 - head/sys/dev/drm2/i915 Message-ID: <201501310213.t0V2DQ8c029198@svn.freebsd.org>
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Author: adrian Date: Sat Jan 31 02:13:25 2015 New Revision: 277959 URL: https://svnweb.freebsd.org/changeset/base/277959 Log: Fix backlight for ivybridge based laptops (and whatever else comes through 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 Modified: head/sys/dev/drm2/i915/intel_display.c Modified: head/sys/dev/drm2/i915/intel_display.c ============================================================================== --- head/sys/dev/drm2/i915/intel_display.c Sat Jan 31 02:12:57 2015 (r277958) +++ head/sys/dev/drm2/i915/intel_display.c Sat Jan 31 02:13:25 2015 (r277959) @@ -6995,7 +6995,7 @@ static void ivb_pch_pwm_override(struct */ 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)
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