From 33c8d8870c67faf3161898a56af98ac3c1c71450 Mon Sep 17 00:00:00 2001 From: Uma Shankar Date: Tue, 5 Sep 2017 15:14:31 +0530 Subject: [PATCH] Revert "drm/i915/bxt: Disable device ready before shutdown command" This reverts commit bbdf0b2ff32a ("drm/i915/bxt: Disable device ready before shutdown command"). Disable device ready before shutdown command was added previously to avoid a split screen issue seen on dual link DSI panels. As of now, dual link is not supported and will need some rework in the upstream code. For single link DSI panels, the change is not required. This will cause failure in sending SHUTDOWN packet during disable. Hence reverting the change. Will handle the change as part of dual link enabling in upstream. Fixes: bbdf0b2ff32a ("drm/i915/bxt: Disable device ready before shutdown command") Cc: # v4.12+ Signed-off-by: Uma Shankar Signed-off-by: Vidya Srinivas Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/1504604671-17237-1-git-send-email-vidya.srinivas@intel.com --- drivers/gpu/drm/i915/intel_dsi.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index 2a0f5d337bea..fc25d7d2d942 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -892,8 +892,6 @@ static void intel_dsi_disable(struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, const 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; @@ -902,15 +900,6 @@ static void intel_dsi_disable(struct intel_encoder *encoder, intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF); intel_panel_disable_backlight(old_conn_state); - /* - * 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); - } - /* * According to the spec we should send SHUTDOWN before * MIPI_SEQ_DISPLAY_OFF only for v3+ VBTs, but field testing -- 2.30.2