Attachment 138088 Details for Bug 105470 – Write to POWER_STATE DPCD

[patch] Write to POWER_STATE DPCD

0001-DEBUG-Write-to-POWER_STATE-DPCD-for-MST-too.patch (text/plain), 1.65 KB, created by Dhinakaran Pandiyan on 2018-03-14 04:14:36 UTC

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Creator: Dhinakaran Pandiyan

Created: 2018-03-14 04:14:36 UTC

Size: 1.65 KB

patch

obsolete

>From 7dedca19b8a07f1c36e07c4941ecfd5ee33d4e4a Mon Sep 17 00:00:00 2001
>From: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
>Date: Tue, 13 Mar 2018 21:10:54 -0700
>Subject: [PATCH] DEBUG: Write to POWER_STATE DPCD for MST too.
>
>Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
>---
> drivers/gpu/drm/i915/intel_ddi.c | 7 ++-----
> 1 file changed, 2 insertions(+), 5 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
>index dbcf1a0586f9..8c2d778560f0 100644
>--- a/drivers/gpu/drm/i915/intel_ddi.c
>+++ b/drivers/gpu/drm/i915/intel_ddi.c
>@@ -2205,8 +2205,7 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
> 		intel_prepare_dp_ddi_buffers(encoder, crtc_state);
> 
> 	intel_ddi_init_dp_buf_reg(encoder);
>-	if (!is_mst)
>-		intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
>+	intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
> 	intel_dp_start_link_train(intel_dp);
> 	if (port != PORT_A || INTEL_GEN(dev_priv) >= 9)
> 		intel_dp_stop_link_train(intel_dp);
>@@ -2304,14 +2303,12 @@ static void intel_ddi_post_disable_dp(struct intel_encoder *encoder,
> 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> 	struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
> 	struct intel_dp *intel_dp = &dig_port->dp;
>-	bool is_mst = intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST);
> 
> 	/*
> 	 * Power down sink before disabling the port, otherwise we end
> 	 * up getting interrupts from the sink on detecting link loss.
> 	 */
>-	if (!is_mst)
>-		intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
>+	intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
> 
> 	intel_disable_ddi_buf(encoder);
> 
>-- 
>2.14.1
>

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Attachments on bug 105470: 138048 | 138078 | 138088 | 138089

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