The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
Possible dependencies:
64b7b557dc8a ("drm/i915/sdvo: Setup DDC fully before output init") cc1e66394daa ("drm/i915/sdvo: Filter out invalid outputs more sensibly")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 64b7b557dc8a96d9cfed6aedbf81de2df80c025d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= ville.syrjala@linux.intel.com Date: Wed, 26 Oct 2022 13:11:28 +0300 Subject: [PATCH] drm/i915/sdvo: Setup DDC fully before output init MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
Call intel_sdvo_select_ddc_bus() before initializing any of the outputs. And before that is functional (assuming no VBT) we have to set up the controlled_outputs thing. Otherwise DDC won't be functional during the output init but LVDS really needs it for the fixed mode setup.
Note that the whole multi output support still looks very bogus, and more work will be needed to make it correct. But for now this should at least fix the LVDS EDID fixed mode setup.
Cc: stable@vger.kernel.org Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/7301 Fixes: aa2b88074a56 ("drm/i915/sdvo: Fix multi function encoder stuff") Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20221026101134.20865-3-ville.s... Reviewed-by: Jani Nikula jani.nikula@intel.com
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c index c38b75fbabd3..e62f41354789 100644 --- a/drivers/gpu/drm/i915/display/intel_sdvo.c +++ b/drivers/gpu/drm/i915/display/intel_sdvo.c @@ -2755,13 +2755,10 @@ intel_sdvo_dvi_init(struct intel_sdvo *intel_sdvo, int device) if (!intel_sdvo_connector) return false;
- if (device == 0) { - intel_sdvo->controlled_output |= SDVO_OUTPUT_TMDS0; + if (device == 0) intel_sdvo_connector->output_flag = SDVO_OUTPUT_TMDS0; - } else if (device == 1) { - intel_sdvo->controlled_output |= SDVO_OUTPUT_TMDS1; + else if (device == 1) intel_sdvo_connector->output_flag = SDVO_OUTPUT_TMDS1; - }
intel_connector = &intel_sdvo_connector->base; connector = &intel_connector->base; @@ -2816,7 +2813,6 @@ intel_sdvo_tv_init(struct intel_sdvo *intel_sdvo, int type) encoder->encoder_type = DRM_MODE_ENCODER_TVDAC; connector->connector_type = DRM_MODE_CONNECTOR_SVIDEO;
- intel_sdvo->controlled_output |= type; intel_sdvo_connector->output_flag = type;
if (intel_sdvo_connector_init(intel_sdvo_connector, intel_sdvo) < 0) { @@ -2857,13 +2853,10 @@ intel_sdvo_analog_init(struct intel_sdvo *intel_sdvo, int device) encoder->encoder_type = DRM_MODE_ENCODER_DAC; connector->connector_type = DRM_MODE_CONNECTOR_VGA;
- if (device == 0) { - intel_sdvo->controlled_output |= SDVO_OUTPUT_RGB0; + if (device == 0) intel_sdvo_connector->output_flag = SDVO_OUTPUT_RGB0; - } else if (device == 1) { - intel_sdvo->controlled_output |= SDVO_OUTPUT_RGB1; + else if (device == 1) intel_sdvo_connector->output_flag = SDVO_OUTPUT_RGB1; - }
if (intel_sdvo_connector_init(intel_sdvo_connector, intel_sdvo) < 0) { kfree(intel_sdvo_connector); @@ -2893,13 +2886,10 @@ intel_sdvo_lvds_init(struct intel_sdvo *intel_sdvo, int device) encoder->encoder_type = DRM_MODE_ENCODER_LVDS; connector->connector_type = DRM_MODE_CONNECTOR_LVDS;
- if (device == 0) { - intel_sdvo->controlled_output |= SDVO_OUTPUT_LVDS0; + if (device == 0) intel_sdvo_connector->output_flag = SDVO_OUTPUT_LVDS0; - } else if (device == 1) { - intel_sdvo->controlled_output |= SDVO_OUTPUT_LVDS1; + else if (device == 1) intel_sdvo_connector->output_flag = SDVO_OUTPUT_LVDS1; - }
if (intel_sdvo_connector_init(intel_sdvo_connector, intel_sdvo) < 0) { kfree(intel_sdvo_connector); @@ -2954,8 +2944,14 @@ static u16 intel_sdvo_filter_output_flags(u16 flags) static bool intel_sdvo_output_setup(struct intel_sdvo *intel_sdvo, u16 flags) { + struct drm_i915_private *i915 = to_i915(intel_sdvo->base.base.dev); + flags = intel_sdvo_filter_output_flags(flags);
+ intel_sdvo->controlled_output = flags; + + intel_sdvo_select_ddc_bus(i915, intel_sdvo); + if (flags & SDVO_OUTPUT_TMDS0) if (!intel_sdvo_dvi_init(intel_sdvo, 0)) return false; @@ -2996,7 +2992,6 @@ intel_sdvo_output_setup(struct intel_sdvo *intel_sdvo, u16 flags) if (flags == 0) { unsigned char bytes[2];
- intel_sdvo->controlled_output = 0; memcpy(bytes, &intel_sdvo->caps.output_flags, 2); DRM_DEBUG_KMS("%s: Unknown SDVO output type (0x%02x%02x)\n", SDVO_NAME(intel_sdvo), @@ -3408,8 +3403,6 @@ bool intel_sdvo_init(struct drm_i915_private *dev_priv, */ intel_sdvo->base.cloneable = 0;
- intel_sdvo_select_ddc_bus(dev_priv, intel_sdvo); - /* Set the input timing to the screen. Assume always input 0. */ if (!intel_sdvo_set_target_input(intel_sdvo)) goto err_output;