[PATCH v3 02/35] drm/bridge: analogix_dp: Stop using drm_bridge->driver_private

[Mihail Atanassov]

Instead, embed the drm_bridge structure into analogix_dp_core and use
a container_of wrapper to access the latter.

Signed-off-by: Mihail Atanassov <mihail.atanassov at arm.com>
---
 .../drm/bridge/analogix/analogix_dp_core.c    | 40 +++++++------------
 .../drm/bridge/analogix/analogix_dp_core.h    |  8 +++-
 2 files changed, 21 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 6effe532f820..56ea3be27f2b 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1218,7 +1218,7 @@ static const struct drm_connector_funcs analogix_dp_connector_funcs = {
 
 static int analogix_dp_bridge_attach(struct drm_bridge *bridge)
 {
-	struct analogix_dp_device *dp = bridge->driver_private;
+	struct analogix_dp_device *dp = bridge_to_analogix_dp_device(bridge);
 	struct drm_encoder *encoder = dp->encoder;
 	struct drm_connector *connector = NULL;
 	int ret = 0;
@@ -1292,7 +1292,7 @@ struct drm_crtc *analogix_dp_get_new_crtc(struct analogix_dp_device *dp,
 static void analogix_dp_bridge_atomic_pre_enable(struct drm_bridge *bridge,
 						 struct drm_atomic_state *state)
 {
-	struct analogix_dp_device *dp = bridge->driver_private;
+	struct analogix_dp_device *dp = bridge_to_analogix_dp_device(bridge);
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *old_crtc_state;
 	int ret;
@@ -1369,7 +1369,7 @@ static int analogix_dp_set_bridge(struct analogix_dp_device *dp)
 static void analogix_dp_bridge_atomic_enable(struct drm_bridge *bridge,
 					     struct drm_atomic_state *state)
 {
-	struct analogix_dp_device *dp = bridge->driver_private;
+	struct analogix_dp_device *dp = bridge_to_analogix_dp_device(bridge);
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *old_crtc_state;
 	int timeout_loop = 0;
@@ -1406,7 +1406,7 @@ static void analogix_dp_bridge_atomic_enable(struct drm_bridge *bridge,
 
 static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
 {
-	struct analogix_dp_device *dp = bridge->driver_private;
+	struct analogix_dp_device *dp = bridge_to_analogix_dp_device(bridge);
 	int ret;
 
 	if (dp->dpms_mode != DRM_MODE_DPMS_ON)
@@ -1443,7 +1443,7 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
 static void analogix_dp_bridge_atomic_disable(struct drm_bridge *bridge,
 					      struct drm_atomic_state *state)
 {
-	struct analogix_dp_device *dp = bridge->driver_private;
+	struct analogix_dp_device *dp = bridge_to_analogix_dp_device(bridge);
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *new_crtc_state = NULL;
 
@@ -1467,7 +1467,7 @@ static
 void analogix_dp_bridge_atomic_post_disable(struct drm_bridge *bridge,
 					    struct drm_atomic_state *state)
 {
-	struct analogix_dp_device *dp = bridge->driver_private;
+	struct analogix_dp_device *dp = bridge_to_analogix_dp_device(bridge);
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *new_crtc_state;
 	int ret;
@@ -1489,7 +1489,7 @@ static void analogix_dp_bridge_mode_set(struct drm_bridge *bridge,
 				const struct drm_display_mode *orig_mode,
 				const struct drm_display_mode *mode)
 {
-	struct analogix_dp_device *dp = bridge->driver_private;
+	struct analogix_dp_device *dp = bridge_to_analogix_dp_device(bridge);
 	struct drm_display_info *display_info = &dp->connector.display_info;
 	struct video_info *video = &dp->video_info;
 	struct device_node *dp_node = dp->dev->of_node;
@@ -1571,28 +1571,16 @@ static const struct drm_bridge_funcs analogix_dp_bridge_funcs = {
 	.attach = analogix_dp_bridge_attach,
 };
 
-static int analogix_dp_create_bridge(struct drm_device *drm_dev,
+static int analogix_dp_attach_bridge(struct drm_device *drm_dev,
 				     struct analogix_dp_device *dp)
 {
-	struct drm_bridge *bridge;
 	int ret;
 
-	bridge = devm_kzalloc(drm_dev->dev, sizeof(*bridge), GFP_KERNEL);
-	if (!bridge) {
-		DRM_ERROR("failed to allocate for drm bridge\n");
-		return -ENOMEM;
-	}
-
-	dp->bridge = bridge;
-
-	bridge->driver_private = dp;
-	bridge->funcs = &analogix_dp_bridge_funcs;
+	dp->bridge.funcs = &analogix_dp_bridge_funcs;
 
-	ret = drm_bridge_attach(dp->encoder, bridge, NULL);
-	if (ret) {
-		DRM_ERROR("failed to attach drm bridge\n");
+	ret = drm_bridge_attach(dp->encoder, &dp->bridge, NULL);
+	if (ret)
 		return -EINVAL;
-	}
 
 	return 0;
 }
@@ -1757,9 +1745,9 @@ analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
 
 	pm_runtime_enable(dev);
 
-	ret = analogix_dp_create_bridge(drm_dev, dp);
+	ret = analogix_dp_attach_bridge(drm_dev, dp);
 	if (ret) {
-		DRM_ERROR("failed to create bridge (%d)\n", ret);
+		DRM_ERROR("failed to attach bridge (%d)\n", ret);
 		goto err_disable_pm_runtime;
 	}
 
@@ -1775,7 +1763,7 @@ EXPORT_SYMBOL_GPL(analogix_dp_bind);
 
 void analogix_dp_unbind(struct analogix_dp_device *dp)
 {
-	analogix_dp_bridge_disable(dp->bridge);
+	analogix_dp_bridge_disable(&dp->bridge);
 	dp->connector.funcs->destroy(&dp->connector);
 
 	if (dp->plat_data->panel) {
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
index c051502d7fbf..aae4110c7bf9 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -9,6 +9,9 @@
 #ifndef _ANALOGIX_DP_CORE_H
 #define _ANALOGIX_DP_CORE_H
 
+#include <linux/kernel.h>
+
+#include <drm/drm_bridge.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_dp_helper.h>
 
@@ -159,7 +162,7 @@ struct analogix_dp_device {
 	struct device		*dev;
 	struct drm_device	*drm_dev;
 	struct drm_connector	connector;
-	struct drm_bridge	*bridge;
+	struct drm_bridge	bridge;
 	struct drm_dp_aux       aux;
 	struct clk		*clock;
 	unsigned int		irq;
@@ -180,6 +183,9 @@ struct analogix_dp_device {
 	struct analogix_dp_plat_data *plat_data;
 };
 
+#define bridge_to_analogix_dp_device(b) \
+	container_of((b), struct analogix_dp_device, bridge)
+
 /* analogix_dp_reg.c */
 void analogix_dp_enable_video_mute(struct analogix_dp_device *dp, bool enable);
 void analogix_dp_stop_video(struct analogix_dp_device *dp);
-- 
2.24.0