From: Paulo Zanoni Date: Wed, 31 Oct 2012 20:12:49 +0000 (-0200) Subject: drm/i915: don't rely on previous values when setting LPT TRANSCONF X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=25f3ef11cda25c71e14011990f6ad5e587c3c214;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git drm/i915: don't rely on previous values when setting LPT TRANSCONF Because we already set all the bits we can set. Signed-off-by: Paulo Zanoni [danvet: apply by hand due to dropped patch. Also, obey my OCD a bit and do a s/_TRANSACONF/TRANSCONF(TRANSCODER_A)/, makes it more consisten with other lpt pch code imnsho ...] Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 9c25199a5e4a..43ad1a556b3c 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1729,16 +1729,15 @@ static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv, assert_fdi_tx_enabled(dev_priv, cpu_transcoder); assert_fdi_rx_enabled(dev_priv, TRANSCODER_A); - val = I915_READ(_TRANSACONF); + val = TRANS_ENABLE; pipeconf_val = I915_READ(PIPECONF(cpu_transcoder)); - val &= ~TRANS_INTERLACE_MASK; if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK) val |= TRANS_INTERLACED; else val |= TRANS_PROGRESSIVE; - I915_WRITE(_TRANSACONF, val | TRANS_ENABLE); + I915_WRITE(TRANSCONF(TRANSCODER_A), val); if (wait_for(I915_READ(_TRANSACONF) & TRANS_STATE_ENABLE, 100)) DRM_ERROR("Failed to enable PCH transcoder\n"); }