3 files changed, 44 insertions, 25 deletions

diff --git a/drivers/gpu/drm/ast/ast_ddc.c b/drivers/gpu/drm/ast/ast_ddc.c
index b7718084422f..29cf5d157f34 100644
--- a/drivers/gpu/drm/ast/ast_ddc.c
+++ b/drivers/gpu/drm/ast/ast_ddc.c
@@ -21,12 +21,22 @@
  * of the Software.
  */
 
+#include <linux/i2c-algo-bit.h>
+#include <linux/i2c.h>
+
 #include <drm/drm_managed.h>
 #include <drm/drm_print.h>
 
 #include "ast_ddc.h"
 #include "ast_drv.h"
 
+struct ast_ddc {
+	struct ast_device *ast;
+
+	struct i2c_algo_bit_data bit;
+	struct i2c_adapter adapter;
+};
+
 static void ast_ddc_algo_bit_data_setsda(void *data, int state)
 {
 	struct ast_ddc *ddc = data;
@@ -132,7 +142,7 @@ static void ast_ddc_release(struct drm_device *dev, void *res)
 	i2c_del_adapter(&ddc->adapter);
 }
 
-struct ast_ddc *ast_ddc_create(struct ast_device *ast)
+struct i2c_adapter *ast_ddc_create(struct ast_device *ast)
 {
 	struct drm_device *dev = &ast->base;
 	struct ast_ddc *ddc;
@@ -145,15 +155,7 @@ struct ast_ddc *ast_ddc_create(struct ast_device *ast)
 		return ERR_PTR(-ENOMEM);
 	ddc->ast = ast;
 
-	adapter = &ddc->adapter;
-	adapter->owner = THIS_MODULE;
-	adapter->dev.parent = dev->dev;
-	i2c_set_adapdata(adapter, ddc);
-	snprintf(adapter->name, sizeof(adapter->name), "AST DDC bus");
-
 	bit = &ddc->bit;
-	bit->udelay = 20;
-	bit->timeout = 2;
 	bit->data = ddc;
 	bit->setsda = ast_ddc_algo_bit_data_setsda;
 	bit->setscl = ast_ddc_algo_bit_data_setscl;
@@ -161,8 +163,16 @@ struct ast_ddc *ast_ddc_create(struct ast_device *ast)
 	bit->getscl = ast_ddc_algo_bit_data_getscl;
 	bit->pre_xfer = ast_ddc_algo_bit_data_pre_xfer;
 	bit->post_xfer = ast_ddc_algo_bit_data_post_xfer;
+	bit->udelay = 20;
+	bit->timeout = usecs_to_jiffies(2200);
 
+	adapter = &ddc->adapter;
+	adapter->owner = THIS_MODULE;
 	adapter->algo_data = bit;
+	adapter->dev.parent = dev->dev;
+	snprintf(adapter->name, sizeof(adapter->name), "AST DDC bus");
+	i2c_set_adapdata(adapter, ddc);
+
 	ret = i2c_bit_add_bus(adapter);
 	if (ret) {
 		drm_err(dev, "Failed to register bit i2c\n");
@@ -173,5 +183,5 @@ struct ast_ddc *ast_ddc_create(struct ast_device *ast)
 	if (ret)
 		return ERR_PTR(ret);
 
-	return ddc;
+	return &ddc->adapter;
 }
diff --git a/drivers/gpu/drm/ast/ast_ddc.h b/drivers/gpu/drm/ast/ast_ddc.h
index 08f3994e09cc..85c93edc9ae1 100644
--- a/drivers/gpu/drm/ast/ast_ddc.h
+++ b/drivers/gpu/drm/ast/ast_ddc.h
@@ -3,18 +3,9 @@
 #ifndef __AST_DDC_H__
 #define __AST_DDC_H__
 
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-
 struct ast_device;
+struct i2c_adapter;
 
-struct ast_ddc {
-	struct ast_device *ast;
-
-	struct i2c_adapter adapter;
-	struct i2c_algo_bit_data bit;
-};
-
-struct ast_ddc *ast_ddc_create(struct ast_device *ast);
+struct i2c_adapter *ast_ddc_create(struct ast_device *ast);
 
 #endif
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index bb9b66aba9ee..6695af70768f 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -43,6 +43,7 @@
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_gem_shmem_helper.h>
 #include <drm/drm_managed.h>
+#include <drm/drm_panic.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_simple_kms_helper.h>
 
@@ -701,12 +702,29 @@ static void ast_primary_plane_helper_atomic_disable(struct drm_plane *plane,
 	ast_set_index_reg_mask(ast, AST_IO_VGASRI, 0x1, 0xdf, 0x20);
 }
 
+static int ast_primary_plane_helper_get_scanout_buffer(struct drm_plane *plane,
+						       struct drm_scanout_buffer *sb)
+{
+	struct ast_plane *ast_plane = to_ast_plane(plane);
+
+	if (plane->state && plane->state->fb && ast_plane->vaddr) {
+		sb->format = plane->state->fb->format;
+		sb->width = plane->state->fb->width;
+		sb->height = plane->state->fb->height;
+		sb->pitch[0] = plane->state->fb->pitches[0];
+		iosys_map_set_vaddr_iomem(&sb->map[0], ast_plane->vaddr);
+		return 0;
+	}
+	return -ENODEV;
+}
+
 static const struct drm_plane_helper_funcs ast_primary_plane_helper_funcs = {
 	DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
 	.atomic_check = ast_primary_plane_helper_atomic_check,
 	.atomic_update = ast_primary_plane_helper_atomic_update,
 	.atomic_enable = ast_primary_plane_helper_atomic_enable,
 	.atomic_disable = ast_primary_plane_helper_atomic_disable,
+	.get_scanout_buffer = ast_primary_plane_helper_get_scanout_buffer,
 };
 
 static const struct drm_plane_funcs ast_primary_plane_funcs = {
@@ -1360,7 +1378,7 @@ static const struct drm_connector_funcs ast_vga_connector_funcs = {
 static int ast_vga_connector_init(struct drm_device *dev, struct drm_connector *connector)
 {
 	struct ast_device *ast = to_ast_device(dev);
-	struct ast_ddc *ddc;
+	struct i2c_adapter *ddc;
 	int ret;
 
 	ddc = ast_ddc_create(ast);
@@ -1371,7 +1389,7 @@ static int ast_vga_connector_init(struct drm_device *dev, struct drm_connector *
 	}
 
 	ret = drm_connector_init_with_ddc(dev, connector, &ast_vga_connector_funcs,
-					  DRM_MODE_CONNECTOR_VGA, &ddc->adapter);
+					  DRM_MODE_CONNECTOR_VGA, ddc);
 	if (ret)
 		return ret;
 
@@ -1429,7 +1447,7 @@ static const struct drm_connector_funcs ast_sil164_connector_funcs = {
 static int ast_sil164_connector_init(struct drm_device *dev, struct drm_connector *connector)
 {
 	struct ast_device *ast = to_ast_device(dev);
-	struct ast_ddc *ddc;
+	struct i2c_adapter *ddc;
 	int ret;
 
 	ddc = ast_ddc_create(ast);
@@ -1440,7 +1458,7 @@ static int ast_sil164_connector_init(struct drm_device *dev, struct drm_connecto
 	}
 
 	ret = drm_connector_init_with_ddc(dev, connector, &ast_sil164_connector_funcs,
-					  DRM_MODE_CONNECTOR_DVII, &ddc->adapter);
+					  DRM_MODE_CONNECTOR_DVII, ddc);
 	if (ret)
 		return ret;