drm/i915: Create generic intel_panel for LVDS and eDP

Create a generic struct intel_panel for sharing a data structure and code
between eDP and LVDS panels. Add the new struct to intel_connector so that
later on we can have generic EDID and mode reading functions with EDID
caching that transparently fallback to fixed mode when EDID is not
available.

Add intel_panel as a dummy first, and move data (such as the mentioned
fixed mode) to it in later patches.

Based on earlier work by Chris Wilson <chris@chris-wilson.co.uk>

CC: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Fixup tiny conflict in intel_dp_destroy.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

4 files changed, 27 insertions, 2 deletions

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index be47efff90f0..83a0bc0b7e93 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2497,9 +2497,12 @@ intel_dp_destroy(struct drm_connector *connector)
 {
         struct drm_device *dev = connector->dev;
         struct intel_dp *intel_dp = intel_attached_dp(connector);
+        struct intel_connector *intel_connector = to_intel_connector(connector);
 
-        if (is_edp(intel_dp))
+        if (is_edp(intel_dp)) {
                 intel_panel_destroy_backlight(dev);
+                intel_panel_fini(&intel_connector->panel);
+        }
 
         drm_sysfs_connector_remove(connector);
         drm_connector_cleanup(connector);
@@ -2828,8 +2831,10 @@ intel_dp_init(struct drm_device *dev, int output_reg, enum port port)
 
         intel_encoder->hot_plug = intel_dp_hot_plug;
 
-        if (is_edp(intel_dp))
+        if (is_edp(intel_dp)) {
+                intel_panel_init(&intel_connector->panel);
                 intel_panel_setup_backlight(connector);
+        }
 
         intel_dp_add_properties(intel_dp, connector);
 
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index fa388fdbfe08..b37bf28d830a 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -163,6 +163,9 @@ struct intel_encoder {
         int crtc_mask;
 };
 
+struct intel_panel {
+};
+
 struct intel_connector {
         struct drm_connector base;
         /*
@@ -179,6 +182,9 @@ struct intel_connector {
         /* Reads out the current hw, returning true if the connector is enabled
          * and active (i.e. dpms ON state). */
         bool (*get_hw_state)(struct intel_connector *);
+
+        /* Panel info for eDP and LVDS */
+        struct intel_panel panel;
 };
 
 struct intel_crtc {
@@ -436,6 +442,9 @@ extern void intel_flush_display_plane(struct drm_i915_private *dev_priv,
                                       enum plane plane);
 
 /* intel_panel.c */
+extern int intel_panel_init(struct intel_panel *panel);
+extern void intel_panel_fini(struct intel_panel *panel);
+
 extern void intel_fixed_panel_mode(struct drm_display_mode *fixed_mode,
                                    struct drm_display_mode *adjusted_mode);
 extern void intel_pch_panel_fitting(struct drm_device *dev,
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 6435bf3ae56c..6b31e2556de0 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -554,6 +554,7 @@ static void intel_lvds_destroy(struct drm_connector *connector)
                 acpi_lid_notifier_unregister(&lvds_connector->lid_notifier);
 
         intel_panel_destroy_backlight(connector->dev);
+        intel_panel_fini(&lvds_connector->base.panel);
 
         drm_sysfs_connector_remove(connector);
         drm_connector_cleanup(connector);
@@ -1106,6 +1107,7 @@ out:
         }
         drm_sysfs_connector_add(connector);
 
+        intel_panel_init(&intel_connector->panel);
         intel_panel_setup_backlight(connector);
 
         return true;
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index d9752a3bf1f8..4c64ebc3f743 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -464,3 +464,12 @@ void intel_panel_destroy_backlight(struct drm_device *dev)
         return;
 }
 #endif
+
+int intel_panel_init(struct intel_panel *panel)
+{
+        return 0;
+}
+
+void intel_panel_fini(struct intel_panel *panel)
+{
+}