disp: msm: dp: parse displayport label dt property

Add logic in DP driver to parse "label" dt property.
This info will be useful to configure DP as primary
or secondary.

Change-Id: I708179c5940c82256034bc6c8338b01ee52f2f79
Signed-off-by: Narender Ankam <nankam@codeaurora.org>

7 files changed, 72 insertions, 7 deletions

diff --git a/msm/dp/dp_display.c b/msm/dp/dp_display.c
index af3bc736..623b3022 100644
--- a/msm/dp/dp_display.c
+++ b/msm/dp/dp_display.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/module.h>
@@ -2570,6 +2570,27 @@ static int dp_display_config_hdr(struct dp_display *dp_display, void *panel,
 		core_clk_rate, flush_hdr);
 }
 
+static int dp_display_get_display_type(struct dp_display *dp_display,
+		const char **display_type)
+{
+	struct dp_display_private *dp;
+
+	if (!dp_display || !display_type) {
+		pr_err("invalid input\n");
+		return -EINVAL;
+	}
+
+	dp = container_of(dp_display, struct dp_display_private, dp_display);
+
+	*display_type = dp->parser->display_type;
+
+	if (!strcmp(*display_type, "primary"))
+		dp_display->is_primary = true;
+
+	return 0;
+}
+
+
 static int dp_display_setup_colospace(struct dp_display *dp_display,
 		void *panel,
 		u32 colorspace)
@@ -3100,6 +3121,7 @@ static int dp_display_probe(struct platform_device *pdev)
 	g_dp_display->post_open     = NULL;
 	g_dp_display->post_init     = dp_display_post_init;
 	g_dp_display->config_hdr    = dp_display_config_hdr;
+	g_dp_display->get_display_type = dp_display_get_display_type;
 	g_dp_display->mst_install   = dp_display_mst_install;
 	g_dp_display->mst_uninstall = dp_display_mst_uninstall;
 	g_dp_display->mst_connector_install = dp_display_mst_connector_install;
diff --git a/msm/dp/dp_display.h b/msm/dp/dp_display.h
index ebfeb1d6..3f4b8d9b 100644
--- a/msm/dp/dp_display.h
+++ b/msm/dp/dp_display.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _DP_DISPLAY_H_
@@ -72,6 +72,7 @@ struct dp_display {
 	u32 max_pclk_khz;
 	u32 no_mst_encoder;
 	void *dp_mst_prv_info;
+	bool is_primary;
 
 	int (*enable)(struct dp_display *dp_display, void *panel);
 	int (*post_enable)(struct dp_display *dp_display, void *panel);
@@ -126,6 +127,8 @@ struct dp_display {
 			struct drm_connector *connector, char *pps_cmd);
 	void (*wakeup_phy_layer)(struct dp_display *dp_display,
 			bool wakeup);
+	int (*get_display_type)(struct dp_display *dp_display,
+			const char **display_type);
 };
 
 #ifdef CONFIG_DRM_MSM_DP
diff --git a/msm/dp/dp_drm.c b/msm/dp/dp_drm.c
index 976e0ebb..30446724 100644
--- a/msm/dp/dp_drm.c
+++ b/msm/dp/dp_drm.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019, 2021, The Linux Foundation. All rights reserved.
  */
 
 #include <drm/drm_atomic_helper.h>
@@ -580,6 +580,19 @@ int dp_connector_get_modes(struct drm_connector *connector,
 	return rc;
 }
 
+int dp_connnector_set_info_blob(struct drm_connector *connector,
+		void *info, void *display, struct msm_mode_info *mode_info)
+{
+	struct dp_display *dp_display = display;
+	const char *display_type = NULL;
+
+	dp_display->get_display_type(dp_display, &display_type);
+	sde_kms_info_add_keystr(info,
+			"display type", display_type);
+
+	return 0;
+}
+
 int dp_drm_bridge_init(void *data, struct drm_encoder *encoder)
 {
 	int rc = 0;
diff --git a/msm/dp/dp_drm.h b/msm/dp/dp_drm.h
index 07f606e8..930b3aa9 100644
--- a/msm/dp/dp_drm.h
+++ b/msm/dp/dp_drm.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019, 2021, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _DP_DRM_H_
@@ -177,6 +177,18 @@ int dp_mst_init(struct dp_display *dp_display);
  * @display: Pointer to private display structure
  */
 void dp_mst_deinit(struct dp_display *dp_display);
+
+/**
+ * dp_conn_set_info_blob - callback to perform info blob initialization
+ * @connector: Pointer to drm connector structure
+ * @info: Pointer to sde connector info structure
+ * @display: Pointer to private display handle
+ * @mode_info: Pointer to mode info structure
+ * Returns: Zero on success
+ */
+int dp_connnector_set_info_blob(struct drm_connector *connector,
+		void *info, void *display, struct msm_mode_info *mode_info);
+
 #else
 static inline int dp_connector_config_hdr(struct drm_connector *connector,
 		void *display, struct sde_connector_state *c_state)
@@ -278,6 +290,13 @@ static inline int dp_mst_deinit(struct dp_display *dp_display)
 {
 	return 0;
 }
+
+int dp_connnector_set_info_blob(struct drm_connector *connector,
+		void *info, void *display, struct msm_mode_info *mode_info)
+{
+	return 0;
+}
+
 #endif
 
 #endif /* _DP_DRM_H_ */
diff --git a/msm/dp/dp_parser.c b/msm/dp/dp_parser.c
index 40a2401b..4c37aa2c 100644
--- a/msm/dp/dp_parser.c
+++ b/msm/dp/dp_parser.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2021, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/of_gpio.h>
@@ -166,6 +166,10 @@ static int dp_parser_misc(struct dp_parser *parser)
 	if (rc)
 		parser->max_lclk_khz = DP_MAX_LINK_CLK_KHZ;
 
+	parser->display_type = of_get_property(of_node, "label", NULL);
+	if (!parser->display_type)
+		parser->display_type = "unknown";
+
 	return 0;
 }
 
diff --git a/msm/dp/dp_parser.h b/msm/dp/dp_parser.h
index 0970dff7..5d937ca2 100644
--- a/msm/dp/dp_parser.h
+++ b/msm/dp/dp_parser.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2021, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _DP_PARSER_H_
@@ -198,6 +198,7 @@ static inline char *dp_phy_aux_config_type_to_string(u32 cfg_type)
  * @max_dp_dsc_input_width_pixs: Maximum input width for DSC block
  * @has_widebus: widebus (2PPC) feature eanble status
   *@mst_fixed_port: mst port_num reserved for fixed topology
+ * @display_type: display type as defined in device tree.
  * @parse: function to be called by client to parse device tree.
  * @get_io: function to be called by client to get io data.
  * @get_io_buf: function to be called by client to get io buffers.
@@ -230,6 +231,8 @@ struct dp_parser {
 	bool lphw_hpd;
 	u32 mst_fixed_port[MAX_DP_MST_STREAMS];
 
+	const char *display_type;
+
 	int (*parse)(struct dp_parser *parser);
 	struct dp_io_data *(*get_io)(struct dp_parser *parser, char *name);
 	void (*get_io_buf)(struct dp_parser *parser, char *name);
diff --git a/msm/sde/sde_kms.c b/msm/sde/sde_kms.c
index f2f5f971..d5ac13a6 100644
--- a/msm/sde/sde_kms.c
+++ b/msm/sde/sde_kms.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2021, The Linux Foundation. All rights reserved.
  * Copyright (C) 2013 Red Hat
  * Author: Rob Clark <robdclark@gmail.com>
  *
@@ -1450,6 +1450,7 @@ static int _sde_kms_setup_displays(struct drm_device *dev,
 		.get_panel_vfp = NULL,
 	};
 	static const struct sde_connector_ops dp_ops = {
+		.set_info_blob = dp_connnector_set_info_blob,
 		.post_init  = dp_connector_post_init,
 		.detect     = dp_connector_detect,
 		.get_modes  = dp_connector_get_modes,