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authorUma Shankar <uma.shankar@intel.com>2017-02-08 16:20:56 +0530
committerJani Nikula <jani.nikula@intel.com>2017-02-16 17:22:09 +0200
commitbbdf0b2ff32aa75c7bd167569130e9391d2e6282 (patch)
tree3cfe799111b19f7af00f5f7c10605d93bfbde5c4 /drivers/gpu/drm/i915/intel_dsi.c
parenteba4daf0dc5861703000f58b1d51110ced2b2fb5 (diff)
downloadtalos-obmc-linux-bbdf0b2ff32aa75c7bd167569130e9391d2e6282.tar.gz
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drm/i915/bxt: Disable device ready before shutdown command
Disable device ready before MIPI port shutdown command. This helps to avoid mipi split screen issues. Signed-off-by: Uma Shankar <uma.shankar@intel.com> Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com> Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1486551058-22596-8-git-send-email-vidya.srinivas@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dsi.c')
-rw-r--r--drivers/gpu/drm/i915/intel_dsi.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index e7e823d00444..c26fe4fc0819 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -612,6 +612,8 @@ static void intel_dsi_pre_disable(struct intel_encoder *encoder,
struct intel_crtc_state *old_crtc_state,
struct drm_connector_state *old_conn_state)
{
+ struct drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
enum port port;
@@ -619,6 +621,15 @@ static void intel_dsi_pre_disable(struct intel_encoder *encoder,
intel_panel_disable_backlight(intel_dsi->attached_connector);
+ /*
+ * Disable Device ready before the port shutdown in order
+ * to avoid split screen
+ */
+ if (IS_BROXTON(dev_priv)) {
+ for_each_dsi_port(port, intel_dsi->ports)
+ I915_WRITE(MIPI_DEVICE_READY(port), 0);
+ }
+
if (is_vid_mode(intel_dsi)) {
/* Send Shutdown command to the panel in LP mode */
for_each_dsi_port(port, intel_dsi->ports)
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