From 2be57922d46fdec4360ced2eb108832c5a90bc0e Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Tue, 9 Dec 2014 21:28:29 +0200 Subject: [PATCH] drm/i915: Fix CRC support for DP port D on CHV MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add the missing CRC control register value for DP port D on CHV. Untested as I don't have a CHV machine with DP on port D. Signed-off-by: Ville Syrjälä [danvet: Add a check to only allow DP D on chv, not vlv.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_debugfs.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index d74b62d0ec72..0779e7f33f42 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -3100,6 +3100,12 @@ static int vlv_pipe_crc_ctl_reg(struct drm_device *dev, *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_C_VLV; need_stable_symbols = true; break; + case INTEL_PIPE_CRC_SOURCE_DP_D: + if (!IS_CHERRYVIEW(dev)) + return -EINVAL; + *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_D_VLV; + need_stable_symbols = true; + break; case INTEL_PIPE_CRC_SOURCE_NONE: *val = 0; break; -- 2.20.1