[Intel-gfx] [PATCH 07/10] drm/i915: Create generic intel_panel for LVDS and eDP

[Jani Nikula]

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 at chris-wilson.co.uk>

CC: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c    |    9 +++++++--
 drivers/gpu/drm/i915/intel_drv.h   |    9 +++++++++
 drivers/gpu/drm/i915/intel_lvds.c  |    2 ++
 drivers/gpu/drm/i915/intel_panel.c |    9 +++++++++
 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 52cbee7..abbdfed 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2502,9 +2502,12 @@ static void
 intel_dp_destroy(struct drm_connector *connector)
 {
 	struct drm_device *dev = connector->dev;
+	struct intel_connector *intel_connector = to_intel_connector(connector);
 
-	if (intel_dpd_is_edp(dev))
+	if (intel_dpd_is_edp(dev)) {
 		intel_panel_destroy_backlight(dev);
+		intel_panel_fini(&intel_connector->panel);
+	}
 
 	drm_sysfs_connector_remove(connector);
 	drm_connector_cleanup(connector);
@@ -2833,8 +2836,10 @@ 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 e5cdf3d..df00f21 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 0ed2c3b..db1b1b7 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -555,6 +555,7 @@ 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);
@@ -1107,6 +1108,7 @@ 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 d9752a3..4c64ebc 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)
+{
+}
-- 
1.7.9.5