Attachment 143782 Details for Bug 109959 – Adds EDID DRM quirk

[patch] Adds EDID DRM quirk

0001-drm-edid-Add-a-EDID-edp-panel-quirk-for-forcing-max-.patch (text/plain), 2.21 KB, created by Manasi on 2019-03-26 22:14:02 UTC

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Creator: Manasi

Created: 2019-03-26 22:14:02 UTC

Size: 2.21 KB

patch

obsolete

>From a21e53d226daebbe91cc6e935a3750d8970b06bc Mon Sep 17 00:00:00 2001
>From: Manasi Navare <manasi.d.navare@intel.com>
>Date: Tue, 26 Mar 2019 15:09:12 -0700
>Subject: [PATCH 1/2] drm/edid: Add a EDID edp panel quirk for forcing max lane
> count
>
>Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
>---
> drivers/gpu/drm/drm_edid.c  | 9 +++++++++
> include/drm/drm_connector.h | 5 +++++
> 2 files changed, 14 insertions(+)
>
>diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
>index fa39592ebc0a..4bfbc6e30e5f 100644
>--- a/drivers/gpu/drm/drm_edid.c
>+++ b/drivers/gpu/drm/drm_edid.c
>@@ -84,6 +84,8 @@
> #define EDID_QUIRK_FORCE_10BPC			(1 << 11)
> /* Non desktop display (i.e. HMD) */
> #define EDID_QUIRK_NON_DESKTOP			(1 << 12)
>+/* Force max lane count */
>+#define EDID_QUIRK_FORCE_MAX_LANE_COUNT		(1 << 13)
> 
> struct detailed_mode_closure {
> 	struct drm_connector *connector;
>@@ -199,6 +201,9 @@ static const struct edid_quirk {
> 
> 	/* OSVR HDK and HDK2 VR Headsets */
> 	{ "SVR", 0x1019, EDID_QUIRK_NON_DESKTOP },
>+
>+	/* SHP eDP 1.4 panel only works with max lane count */
>+	{ "SHP", 0x149a, EDID_QUIRK_FORCE_MAX_LANE_COUNT },
> };
> 
> /*
>@@ -4473,6 +4478,7 @@ drm_reset_display_info(struct drm_connector *connector)
> 	memset(&info->hdmi, 0, sizeof(info->hdmi));
> 
> 	info->non_desktop = 0;
>+	info->force_max_lane_count = 0;
> }
> 
> u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edid)
>@@ -4754,6 +4760,9 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
> 	if (quirks & EDID_QUIRK_FORCE_12BPC)
> 		connector->display_info.bpc = 12;
> 
>+	if (quirks & EDID_QUIRK_FORCE_MAX_LANE_COUNT)
>+		connector->display_info.force_max_lane_count = true;
>+
> 	return num_modes;
> }
> EXPORT_SYMBOL(drm_add_edid_modes);
>diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
>index bb3bd8e1633a..319d4783d3e3 100644
>--- a/include/drm/drm_connector.h
>+++ b/include/drm/drm_connector.h
>@@ -467,6 +467,11 @@ struct drm_display_info {
> 	 * @non_desktop: Non desktop display (HMD).
> 	 */
> 	bool non_desktop;
>+
>+	/**
>+	 * @force_max_lane_count: Link training requires max lane count to pass
>+	 */
>+	bool force_max_lane_count;
> };
> 
> int drm_display_info_set_bus_formats(struct drm_display_info *info,
>-- 
>2.19.1
>

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Attachments on bug 109959: 143621 | 143624 | 143729 | 143776 | 143782 | 143783 | 143791 | 143792 | 143793 | 143794 | 143795 | 143796 | 143797 | 143801 | 143817 | 143862 | 143865 | 143874 | 143967 | 143987 | 143988 | 143990 | 143993 | 144000 | 144002

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