From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Tue, 8 May 2018 17:08:14 +0300
Subject: drm/i915: Replace vbt edp.support with int_lvds_support
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Git-commit: 5255e2f8d1177f3eddeae930dda58e4dc7b4373d
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Replace dev_priv->vbt.edp.support with
dev_priv->vbt.int_lvds_support. We'll want to extend its
use beyond the LVDS vs. eDP case in the future.

v2: Nuke the edp.support from parse_edp() (Jani)
    Only clear int_lvds_support for gen5+ to preserve
    the current behaviour (Jani)

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508140814.20105-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/i915/i915_drv.h   |    2 +-
 drivers/gpu/drm/i915/intel_bios.c |   13 +++++++------
 drivers/gpu/drm/i915/intel_lvds.c |    9 +++++----
 3 files changed, 13 insertions(+), 11 deletions(-)

--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1060,6 +1060,7 @@ struct intel_vbt_data {
 	unsigned int lvds_vbt:1;
 	unsigned int int_crt_support:1;
 	unsigned int lvds_use_ssc:1;
+	unsigned int int_lvds_support:1;
 	unsigned int display_clock_mode:1;
 	unsigned int fdi_rx_polarity_inverted:1;
 	unsigned int panel_type:4;
@@ -1075,7 +1076,6 @@ struct intel_vbt_data {
 		int vswing;
 		bool low_vswing;
 		bool initialized;
-		bool support;
 		int bpp;
 		struct edp_power_seq pps;
 	} edp;
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -518,8 +518,9 @@ parse_driver_features(struct drm_i915_pr
 	if (!driver)
 		return;
 
-	if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
-		dev_priv->vbt.edp.support = 1;
+	if (INTEL_GEN(dev_priv) >= 5 &&
+	    driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
+		dev_priv->vbt.int_lvds_support = 0;
 
 	DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled);
 	/*
@@ -542,11 +543,8 @@ parse_edp(struct drm_i915_private *dev_p
 	int panel_type = dev_priv->vbt.panel_type;
 
 	edp = find_section(bdb, BDB_EDP);
-	if (!edp) {
-		if (dev_priv->vbt.edp.support)
-			DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n");
+	if (!edp)
 		return;
-	}
 
 	switch ((edp->color_depth >> (panel_type * 2)) & 3) {
 	case EDP_18BPP:
@@ -1513,6 +1511,9 @@ init_vbt_defaults(struct drm_i915_privat
 	dev_priv->vbt.int_tv_support = 1;
 	dev_priv->vbt.int_crt_support = 1;
 
+	/* driver features */
+	dev_priv->vbt.int_lvds_support = 1;
+
 	/* Default to using SSC */
 	dev_priv->vbt.lvds_use_ssc = 1;
 	/*
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -1008,6 +1008,11 @@ void intel_lvds_init(struct drm_i915_pri
 	if (dmi_check_system(intel_no_lvds))
 		return;
 
+	if (!dev_priv->vbt.int_lvds_support) {
+		DRM_DEBUG_KMS("Internal LVDS support disabled by VBT\n");
+		return;
+	}
+
 	if (HAS_PCH_SPLIT(dev_priv))
 		lvds_reg = PCH_LVDS;
 	else
@@ -1018,10 +1023,6 @@ void intel_lvds_init(struct drm_i915_pri
 	if (HAS_PCH_SPLIT(dev_priv)) {
 		if ((lvds & LVDS_DETECTED) == 0)
 			return;
-		if (dev_priv->vbt.edp.support) {
-			DRM_DEBUG_KMS("disable LVDS for eDP support\n");
-			return;
-		}
 	}
 
 	pin = GMBUS_PIN_PANEL;