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drm/ast: Remove vaddr field from struct ast_plane

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The vaddr field in struct ast_plane serves no purpose. Its value
can be calculated easily from the VRAM base plus the plane offset.
Do so and remove the field.

In ast_primary_plane_helper_get_scanout_buffer(), remove the test
for vaddr being NULL. This cannot legally happen.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20250324094520.192974-3-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2025-03-24 10:44:10 +01:00
parent 7cce65f378
commit 23fd03aa6c
3 changed files with 17 additions and 14 deletions
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8
drivers/gpu/drm/ast/ast_cursor.c
View File

@@ -91,7 +91,7 @@ static u32 ast_cursor_calculate_checksum(const void *src, unsigned int width, un
static void ast_set_cursor_image(struct ast_device *ast, const u8 *src,
unsigned int width, unsigned int height)
{
u8 __iomem *dst = ast->cursor_plane.base.vaddr;
u8 __iomem *dst = ast_plane_vaddr(&ast->cursor_plane.base);
u32 csum;
csum = ast_cursor_calculate_checksum(src, width, height);
@@ -193,7 +193,7 @@ static void ast_cursor_plane_helper_atomic_update(struct drm_plane *plane,
struct ast_device *ast = to_ast_device(plane->dev);
struct drm_rect damage;
u64 dst_off = ast_plane->offset;
u8 __iomem *dst = ast_plane->vaddr; /* TODO: Use mapping abstraction properly */
u8 __iomem *dst = ast_plane_vaddr(ast_plane); /* TODO: Use mapping abstraction properly */
u8 __iomem *sig = dst + AST_HWC_SIZE; /* TODO: Use mapping abstraction properly */
unsigned int offset_x, offset_y;
u16 x, y;
@@ -291,7 +291,6 @@ int ast_cursor_plane_init(struct ast_device *ast)
struct ast_plane *ast_plane = &ast_cursor_plane->base;
struct drm_plane *cursor_plane = &ast_plane->base;
unsigned long size;
void __iomem *vaddr;
long offset;
int ret;
@@ -299,9 +298,8 @@ int ast_cursor_plane_init(struct ast_device *ast)
offset = ast_cursor_vram_offset(ast);
if (offset < 0)
return offset;
vaddr = ast->vram + offset;
ret = ast_plane_init(dev, ast_plane, vaddr, offset, size,
ret = ast_plane_init(dev, ast_plane, offset, size,
0x01, &ast_cursor_plane_funcs,
ast_cursor_plane_formats, ARRAY_SIZE(ast_cursor_plane_formats),
NULL, DRM_PLANE_TYPE_CURSOR);

4
drivers/gpu/drm/ast/ast_drv.h
View File

@@ -122,7 +122,6 @@ enum ast_config_mode {
struct ast_plane {
struct drm_plane base;
void __iomem *vaddr;
u64 offset;
unsigned long size;
};
@@ -443,11 +442,12 @@ int ast_astdp_output_init(struct ast_device *ast);
/* ast_mode.c */
int ast_mode_config_init(struct ast_device *ast);
int ast_plane_init(struct drm_device *dev, struct ast_plane *ast_plane,
void __iomem *vaddr, u64 offset, unsigned long size,
u64 offset, unsigned long size,
uint32_t possible_crtcs,
const struct drm_plane_funcs *funcs,
const uint32_t *formats, unsigned int format_count,
const uint64_t *format_modifiers,
enum drm_plane_type type);
void __iomem *ast_plane_vaddr(struct ast_plane *ast);
#endif

19
drivers/gpu/drm/ast/ast_mode.c
View File

@@ -457,7 +457,7 @@ static void ast_wait_for_vretrace(struct ast_device *ast)
*/
int ast_plane_init(struct drm_device *dev, struct ast_plane *ast_plane,
void __iomem *vaddr, u64 offset, unsigned long size,
u64 offset, unsigned long size,
uint32_t possible_crtcs,
const struct drm_plane_funcs *funcs,
const uint32_t *formats, unsigned int format_count,
@@ -466,7 +466,6 @@ int ast_plane_init(struct drm_device *dev, struct ast_plane *ast_plane,
{
struct drm_plane *plane = &ast_plane->base;
ast_plane->vaddr = vaddr;
ast_plane->offset = offset;
ast_plane->size = size;
@@ -475,6 +474,13 @@ int ast_plane_init(struct drm_device *dev, struct ast_plane *ast_plane,
type, NULL);
}
void __iomem *ast_plane_vaddr(struct ast_plane *ast_plane)
{
struct ast_device *ast = to_ast_device(ast_plane->base.dev);
return ast->vram + ast_plane->offset;
}
/*
* Primary plane
*/
@@ -521,7 +527,7 @@ static void ast_handle_damage(struct ast_plane *ast_plane, struct iosys_map *src
struct drm_framebuffer *fb,
const struct drm_rect *clip)
{
struct iosys_map dst = IOSYS_MAP_INIT_VADDR_IOMEM(ast_plane->vaddr);
struct iosys_map dst = IOSYS_MAP_INIT_VADDR_IOMEM(ast_plane_vaddr(ast_plane));
iosys_map_incr(&dst, drm_fb_clip_offset(fb->pitches[0], fb->format, clip));
drm_fb_memcpy(&dst, fb->pitches, src, fb, clip);
@@ -594,12 +600,12 @@ static int ast_primary_plane_helper_get_scanout_buffer(struct drm_plane *plane,
{
struct ast_plane *ast_plane = to_ast_plane(plane);
if (plane->state && plane->state->fb && ast_plane->vaddr) {
if (plane->state && plane->state->fb) {
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);
iosys_map_set_vaddr_iomem(&sb->map[0], ast_plane_vaddr(ast_plane));
return 0;
}
return -ENODEV;
@@ -626,12 +632,11 @@ static int ast_primary_plane_init(struct ast_device *ast)
struct drm_device *dev = &ast->base;
struct ast_plane *ast_primary_plane = &ast->primary_plane;
struct drm_plane *primary_plane = &ast_primary_plane->base;
void __iomem *vaddr = ast->vram;
u64 offset = ast_fb_vram_offset();
unsigned long size = ast_fb_vram_size(ast);
int ret;
ret = ast_plane_init(dev, ast_primary_plane, vaddr, offset, size,
ret = ast_plane_init(dev, ast_primary_plane, offset, size,
0x01, &ast_primary_plane_funcs,
ast_primary_plane_formats, ARRAY_SIZE(ast_primary_plane_formats),
NULL, DRM_PLANE_TYPE_PRIMARY);