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drm/ast: Move all of the cursor-update functionality to atomic_update 

We used to update the cursor image in prepare_fb. Move all this code to
atomic_update (where it belongs). The generic helper for shadow-buffered
planes now implement the cursor plane's prepare_fb.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210209134632.12157-11-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2021-02-09 14:46:32 +01:00
parent 385131f3a1
commit 4d36cf0702
1 changed files with 22 additions and 44 deletions
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66
drivers/gpu/drm/ast/ast_mode.c
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@ -37,6 +37,7 @@
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_gem_vram_helper.h>
#include <drm/drm_plane_helper.h>
@ -753,40 +754,6 @@ static const uint32_t ast_cursor_plane_formats[] = {
DRM_FORMAT_ARGB8888,
};
static int
ast_cursor_plane_helper_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
struct ast_cursor_plane *ast_cursor_plane = to_ast_cursor_plane(plane);
struct drm_framebuffer *fb = new_state->fb;
struct dma_buf_map dst_map =
ast_cursor_plane->hwc[ast_cursor_plane->next_hwc_index].map;
struct drm_gem_vram_object *src_gbo;
struct dma_buf_map src_map;
void __iomem *dst;
void *src;
int ret;
if (!fb)
return 0;
src_gbo = drm_gem_vram_of_gem(fb->obj[0]);
ret = drm_gem_vram_vmap(src_gbo, &src_map);
if (ret)
return ret;
src = src_map.vaddr; /* TODO: Use mapping abstraction properly */
dst = dst_map.vaddr_iomem; /* TODO: Use mapping abstraction properly */
/* do data transfer to cursor BO */
ast_update_cursor_image(dst, src, fb->width, fb->height);
drm_gem_vram_vunmap(src_gbo, &src_map);
return 0;
}
static int ast_cursor_plane_helper_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
@ -821,18 +788,31 @@ ast_cursor_plane_helper_atomic_update(struct drm_plane *plane,
{
struct ast_cursor_plane *ast_cursor_plane = to_ast_cursor_plane(plane);
struct drm_plane_state *state = plane->state;
struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(state);
struct drm_framebuffer *fb = state->fb;
struct ast_private *ast = to_ast_private(plane->dev);
struct dma_buf_map dst_map =
ast_cursor_plane->hwc[ast_cursor_plane->next_hwc_index].map;
u64 dst_off =
ast_cursor_plane->hwc[ast_cursor_plane->next_hwc_index].off;
struct dma_buf_map src_map = shadow_plane_state->map[0];
unsigned int offset_x, offset_y;
struct dma_buf_map map;
u16 x, y;
u8 x_offset, y_offset;
u8 __iomem *dst;
u8 __iomem *sig;
const u8 *src;
map = ast_cursor_plane->hwc[ast_cursor_plane->next_hwc_index].map;
src = src_map.vaddr; /* TODO: Use mapping abstraction properly */
dst = dst_map.vaddr_iomem; /* TODO: Use mapping abstraction properly */
sig = dst + AST_HWC_SIZE; /* TODO: Use mapping abstraction properly */
/*
* Do data transfer to HW cursor BO. If a new cursor image was installed,
* point the scanout engine to dst_gbo's offset and page-flip the HWC buffers.
*/
ast_update_cursor_image(dst, src, fb->width, fb->height);
if (state->fb != old_state->fb) {
ast_set_cursor_base(ast, dst_off);
@ -841,9 +821,10 @@ ast_cursor_plane_helper_atomic_update(struct drm_plane *plane,
ast_cursor_plane->next_hwc_index %= ARRAY_SIZE(ast_cursor_plane->hwc);
}
dst = map.vaddr_iomem; /* TODO: Use mapping abstraction properly */
/*
* Update location in HWC signature and registers.
*/
sig = dst + AST_HWC_SIZE;
writel(state->crtc_x, sig + AST_HWC_SIGNATURE_X);
writel(state->crtc_y, sig + AST_HWC_SIGNATURE_Y);
@ -867,7 +848,7 @@ ast_cursor_plane_helper_atomic_update(struct drm_plane *plane,
ast_set_cursor_location(ast, x, y, x_offset, y_offset);
/* dummy write to fire HWC */
/* Dummy write to enable HWC and make the HW pick-up the changes. */
ast_set_cursor_enabled(ast, true);
}
@ -881,8 +862,7 @@ ast_cursor_plane_helper_atomic_disable(struct drm_plane *plane,
}
static const struct drm_plane_helper_funcs ast_cursor_plane_helper_funcs = {
.prepare_fb = ast_cursor_plane_helper_prepare_fb,
.cleanup_fb = NULL, /* not required for cursor plane */
DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
.atomic_check = ast_cursor_plane_helper_atomic_check,
.atomic_update = ast_cursor_plane_helper_atomic_update,
.atomic_disable = ast_cursor_plane_helper_atomic_disable,
@ -910,9 +890,7 @@ static const struct drm_plane_funcs ast_cursor_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = ast_cursor_plane_destroy,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
DRM_GEM_SHADOW_PLANE_FUNCS,
};
static int ast_cursor_plane_init(struct ast_private *ast)