Some drivers need explicit flushing of buffer changes, add a function that does that.
v2: - Put all clip rect stuff inside if statement (Sam)
Reviewed-by: Sam Ravnborg sam@ravnborg.org Signed-off-by: Noralf Trønnes noralf@tronnes.org --- drivers/gpu/drm/drm_client.c | 33 +++++++++++++++++++++++++++++++++ include/drm/drm_client.h | 1 + 2 files changed, 34 insertions(+)
diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c index 12787915db01..827ee6422dd2 100644 --- a/drivers/gpu/drm/drm_client.c +++ b/drivers/gpu/drm/drm_client.c @@ -483,6 +483,39 @@ void drm_client_framebuffer_delete(struct drm_client_buffer *buffer) } EXPORT_SYMBOL(drm_client_framebuffer_delete);
+/** + * drm_client_framebuffer_flush - Manually flush client framebuffer + * @buffer: DRM client buffer (can be NULL) + * @rect: Damage rectangle (if NULL flushes all) + * + * This calls &drm_framebuffer_funcs->dirty (if present) to flush buffer changes + * for drivers that need it. + * + * Returns: + * Zero on success or negative error code on failure. + */ +int drm_client_framebuffer_flush(struct drm_client_buffer *buffer, struct drm_rect *rect) +{ + if (!buffer || !buffer->fb || !buffer->fb->funcs->dirty) + return 0; + + if (rect) { + struct drm_clip_rect clip = { + .x1 = rect->x1, + .y1 = rect->y1, + .x2 = rect->x2, + .y2 = rect->y2, + }; + + return buffer->fb->funcs->dirty(buffer->fb, buffer->client->file, + 0, 0, &clip, 1); + } + + return buffer->fb->funcs->dirty(buffer->fb, buffer->client->file, + 0, 0, NULL, 0); +} +EXPORT_SYMBOL(drm_client_framebuffer_flush); + #ifdef CONFIG_DEBUG_FS static int drm_client_debugfs_internal_clients(struct seq_file *m, void *data) { diff --git a/include/drm/drm_client.h b/include/drm/drm_client.h index 96ebc7523aa0..9737dd7b147f 100644 --- a/include/drm/drm_client.h +++ b/include/drm/drm_client.h @@ -156,6 +156,7 @@ struct drm_client_buffer { struct drm_client_buffer * drm_client_framebuffer_create(struct drm_client_dev *client, u32 width, u32 height, u32 format); void drm_client_framebuffer_delete(struct drm_client_buffer *buffer); +int drm_client_framebuffer_flush(struct drm_client_buffer *buffer, struct drm_rect *rect); void *drm_client_buffer_vmap(struct drm_client_buffer *buffer); void drm_client_buffer_vunmap(struct drm_client_buffer *buffer);