Hi,
Tested with ast2400
On 2023/6/16 21:52, Thomas Zimmermann wrote:
Ast sets up a managed release of the MMIO access flags. Move this
code next to the MMIO access code, so that it runs if other errors
occur during the device initialization.
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Tested-by: Sui Jingfeng <suijingfeng@xxxxxxxxxxx>
Reviewed-by: Sui Jingfeng <suijingfeng@xxxxxxxxxxx>
---
drivers/gpu/drm/ast/ast_main.c | 38 +++++++++++++++++-----------------
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
index 3295876c09b35..6ff4b837e64d7 100644
--- a/drivers/gpu/drm/ast/ast_main.c
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -71,11 +71,25 @@ static void ast_enable_vga(struct drm_device *dev)
ast_io_write8(ast, AST_IO_MISC_PORT_WRITE, 0x01);
}
-static void ast_enable_mmio(struct drm_device *dev)
+/*
+ * Run this function as part of the HW device cleanup; not
+ * when the DRM device gets released.
+ */
+static void ast_enable_mmio_release(void *data)
{
- struct ast_device *ast = to_ast_device(dev);
+ struct ast_device *ast = data;
+
+ /* enable standard VGA decode */
+ ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x04);
+}
+
+static int ast_enable_mmio(struct ast_device *ast)
+{
+ struct drm_device *dev = &ast->base;
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x06);
+
+ return devm_add_action_or_reset(dev->dev, ast_enable_mmio_release, ast);
}
static void ast_open_key(struct ast_device *ast)
@@ -392,18 +406,6 @@ static int ast_get_dram_info(struct drm_device *dev)
return 0;
}
-/*
- * Run this function as part of the HW device cleanup; not
- * when the DRM device gets released.
- */
-static void ast_device_release(void *data)
-{
- struct ast_device *ast = data;
-
- /* enable standard VGA decode */
- ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x04);
-}
-
struct ast_device *ast_device_create(const struct drm_driver *drv,
struct pci_dev *pdev,
unsigned long flags)
@@ -465,7 +467,9 @@ struct ast_device *ast_device_create(const struct drm_driver *drv,
/* Enable extended register access */
ast_open_key(ast);
- ast_enable_mmio(dev);
+ ret = ast_enable_mmio(ast);
+ if (ret)
+ return ERR_PTR(ret);
/* Find out whether P2A works or whether to use device-tree */
ast_detect_config_mode(dev, &scu_rev);
@@ -498,9 +502,5 @@ struct ast_device *ast_device_create(const struct drm_driver *drv,
if (ret)
return ERR_PTR(ret);
- ret = devm_add_action_or_reset(dev->dev, ast_device_release, ast);
- if (ret)
- return ERR_PTR(ret);
-
return ast;
}
--
Jingfeng
