drm/msm: Initial add eDP support in msm drm driver (V3)

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index 1363038..3b25dd8 100644
@@ -76,6 +76,12 @@ struct msm_drm_private {
 	 */
 	struct hdmi *hdmi;
 
+	/* eDP is for mdp5 only, but kms has not been created
+	 * when edp_bind() and edp_init() are called. Here is the only
+	 * place to keep the edp instance.
+	 */
+	struct msm_edp *edp;
+
 	/* when we have more than one 'msm_gpu' these need to be an array: */
 	struct msm_gpu *gpu;
 	struct msm_file_private *lastctx;

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index 1363038..3b25dd8 100644
@@ -76,6 +76,12 @@ struct msm_drm_private {
 	 */
 	struct hdmi *hdmi;
 
+	/* eDP is for mdp5 only, but kms has not been created
+	 * when edp_bind() and edp_init() are called. Here is the only
+	 * place to keep the edp instance.
+	 */
+	struct msm_edp *edp;
+
 	/* when we have more than one 'msm_gpu' these need to be an array: */
 	struct msm_gpu *gpu;
 	struct msm_file_private *lastctx;

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index 1363038..3b25dd8 100644
@@ -76,6 +76,12 @@ struct msm_drm_private {
 	 */
 	struct hdmi *hdmi;
 
+	/* eDP is for mdp5 only, but kms has not been created
+	 * when edp_bind() and edp_init() are called. Here is the only
+	 * place to keep the edp instance.
+	 */
+	struct msm_edp *edp;
+
 	/* when we have more than one 'msm_gpu' these need to be an array: */
 	struct msm_gpu *gpu;
 	struct msm_file_private *lastctx;

index 3ce82be..dd2e5fa 100644
@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
  * Copyright (C) 2013 Red Hat
  * Author: Rob Clark <[email protected]>
  *

@@ -162,11 +163,13 @@ static void mdp5_encoder_mode_set(struct drm_encoder *encoder,
 {
 	struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
 	struct mdp5_kms *mdp5_kms = get_kms(encoder);
+	struct drm_device *dev = encoder->dev;
+	struct drm_connector *connector;
 	int intf = mdp5_encoder->intf;
 	uint32_t dtv_hsync_skew, vsync_period, vsync_len, ctrl_pol;
 	uint32_t display_v_start, display_v_end;
 	uint32_t hsync_start_x, hsync_end_x;
-	uint32_t format;
+	uint32_t format = 0x2100;
 	unsigned long flags;
 
 	mode = adjusted_mode;

@@ -188,7 +191,28 @@ static void mdp5_encoder_mode_set(struct drm_encoder *encoder,
 	/* probably need to get DATA_EN polarity from panel.. */
 
 	dtv_hsync_skew = 0;  /* get this from panel? */
-	format = 0x213f;     /* get this from panel? */
+
+	/* Get color format from panel, default is 8bpc */
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		if (connector->encoder == encoder) {
+			switch (connector->display_info.bpc) {
+			case 4:
+				format |= 0;
+				break;
+			case 5:
+				format |= 0x15;
+				break;
+			case 6:
+				format |= 0x2A;
+				break;
+			case 8:
+			default:
+				format |= 0x3F;
+				break;
+			}
+			break;
+		}
+	}
 
 	hsync_start_x = (mode->htotal - mode->hsync_start);
 	hsync_end_x = mode->htotal - (mode->hsync_start - mode->hdisplay) - 1;

@@ -198,6 +222,16 @@ static void mdp5_encoder_mode_set(struct drm_encoder *encoder,
 	display_v_start = (mode->vtotal - mode->vsync_start) * mode->htotal + dtv_hsync_skew;
 	display_v_end = vsync_period - ((mode->vsync_start - mode->vdisplay) * mode->htotal) + dtv_hsync_skew - 1;
 
+	/*
+	 * For edp only:
+	 * DISPLAY_V_START = (VBP * HCYCLE) + HBP
+	 * DISPLAY_V_END = (VBP + VACTIVE) * HCYCLE - 1 - HFP
+	 */
+	if (mdp5_encoder->intf_id == INTF_eDP) {
+		display_v_start += mode->htotal - mode->hsync_start;
+		display_v_end -= mode->hsync_start - mode->hdisplay;
+	}
+
 	spin_lock_irqsave(&mdp5_encoder->intf_lock, flags);
 
 	mdp5_write(mdp5_kms, REG_MDP5_INTF_HSYNC_CTL(intf),

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index d2e0a73..6f8aaea 100644
@@ -1023,6 +1023,7 @@ static struct platform_driver msm_platform_driver = {
 static int __init msm_drm_register(void)
 {
 	DBG("init");
+	msm_edp_register();
 	hdmi_register();
 	adreno_register();
 	return platform_driver_register(&msm_platform_driver);

@@ -1034,6 +1035,7 @@ static void __exit msm_drm_unregister(void)
 	platform_driver_unregister(&msm_platform_driver);
 	hdmi_unregister();
 	adreno_unregister();
+	msm_edp_unregister();
 }
 
 module_init(msm_drm_register);

index 3b25dd8..c83abf3 100644
@@ -224,6 +224,12 @@ int hdmi_modeset_init(struct hdmi *hdmi, struct drm_device *dev,
 void __init hdmi_register(void);
 void __exit hdmi_unregister(void);
 
+struct msm_edp;
+void __init msm_edp_register(void);
+void __exit msm_edp_unregister(void);
+int msm_edp_modeset_init(struct msm_edp *edp, struct drm_device *dev,
+		struct drm_encoder *encoder);
+
 #ifdef CONFIG_DEBUG_FS
 void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
 void msm_gem_describe_objects(struct list_head *list, struct seq_file *m);

index 3ce82be..dd2e5fa 100644
@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
  * Copyright (C) 2013 Red Hat
  * Author: Rob Clark <[email protected]>
  *

@@ -162,11 +163,13 @@ static void mdp5_encoder_mode_set(struct drm_encoder *encoder,
 {
 	struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
 	struct mdp5_kms *mdp5_kms = get_kms(encoder);
+	struct drm_device *dev = encoder->dev;
+	struct drm_connector *connector;
 	int intf = mdp5_encoder->intf;
 	uint32_t dtv_hsync_skew, vsync_period, vsync_len, ctrl_pol;
 	uint32_t display_v_start, display_v_end;
 	uint32_t hsync_start_x, hsync_end_x;
-	uint32_t format;
+	uint32_t format = 0x2100;
 	unsigned long flags;
 
 	mode = adjusted_mode;

@@ -188,7 +191,28 @@ static void mdp5_encoder_mode_set(struct drm_encoder *encoder,
 	/* probably need to get DATA_EN polarity from panel.. */
 
 	dtv_hsync_skew = 0;  /* get this from panel? */
-	format = 0x213f;     /* get this from panel? */
+
+	/* Get color format from panel, default is 8bpc */
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		if (connector->encoder == encoder) {
+			switch (connector->display_info.bpc) {
+			case 4:
+				format |= 0;
+				break;
+			case 5:
+				format |= 0x15;
+				break;
+			case 6:
+				format |= 0x2A;
+				break;
+			case 8:
+			default:
+				format |= 0x3F;
+				break;
+			}
+			break;
+		}
+	}
 
 	hsync_start_x = (mode->htotal - mode->hsync_start);
 	hsync_end_x = mode->htotal - (mode->hsync_start - mode->hdisplay) - 1;

@@ -198,6 +222,16 @@ static void mdp5_encoder_mode_set(struct drm_encoder *encoder,
 	display_v_start = (mode->vtotal - mode->vsync_start) * mode->htotal + dtv_hsync_skew;
 	display_v_end = vsync_period - ((mode->vsync_start - mode->vdisplay) * mode->htotal) + dtv_hsync_skew - 1;
 
+	/*
+	 * For edp only:
+	 * DISPLAY_V_START = (VBP * HCYCLE) + HBP
+	 * DISPLAY_V_END = (VBP + VACTIVE) * HCYCLE - 1 - HFP
+	 */
+	if (mdp5_encoder->intf_id == INTF_eDP) {
+		display_v_start += mode->htotal - mode->hsync_start;
+		display_v_end -= mode->hsync_start - mode->hdisplay;
+	}
+
 	spin_lock_irqsave(&mdp5_encoder->intf_lock, flags);
 
 	mdp5_write(mdp5_kms, REG_MDP5_INTF_HSYNC_CTL(intf),

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index d2e0a73..6f8aaea 100644
@@ -1023,6 +1023,7 @@ static struct platform_driver msm_platform_driver = {
 static int __init msm_drm_register(void)
 {
 	DBG("init");
+	msm_edp_register();
 	hdmi_register();
 	adreno_register();
 	return platform_driver_register(&msm_platform_driver);

@@ -1034,6 +1035,7 @@ static void __exit msm_drm_unregister(void)
 	platform_driver_unregister(&msm_platform_driver);
 	hdmi_unregister();
 	adreno_unregister();
+	msm_edp_unregister();
 }
 
 module_init(msm_drm_register);

index 3b25dd8..c83abf3 100644
@@ -224,6 +224,12 @@ int hdmi_modeset_init(struct hdmi *hdmi, struct drm_device *dev,
 void __init hdmi_register(void);
 void __exit hdmi_unregister(void);
 
+struct msm_edp;
+void __init msm_edp_register(void);
+void __exit msm_edp_unregister(void);
+int msm_edp_modeset_init(struct msm_edp *edp, struct drm_device *dev,
+		struct drm_encoder *encoder);
+
 #ifdef CONFIG_DEBUG_FS
 void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
 void msm_gem_describe_objects(struct list_head *list, struct seq_file *m);