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drm/i915: only apply GAMMA_MODE IPS WA on HSW

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The WA is mentioned in HSW's GAMMA_MODE register documentation, but
not on on BDW's documentation, so let's assume it is not needed there.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2014-01-08 17:26:31 -02:00 committed by Daniel Vetter
parent ba0fbca474
commit 41e6fc4cd4
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_display.c
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@ -3496,7 +3496,7 @@ static void intel_crtc_load_lut(struct drm_crtc *crtc)
/* Workaround : Do not read or write the pipe palette/gamma data while
* GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
*/
if (intel_crtc->config.ips_enabled &&
if (IS_HASWELL(dev) && intel_crtc->config.ips_enabled &&
((I915_READ(GAMMA_MODE(pipe)) & GAMMA_MODE_MODE_MASK) ==
GAMMA_MODE_MODE_SPLIT)) {
hsw_disable_ips(intel_crtc);