This commit is the groundwork to introduce new formats to the planes and
writeback buffer. As part of it, a new buffer metadata field is added to
`vkms_writeback_job`, this metadata is represented by the `vkms_composer`
struct.
Also adds two new function pointers (`{wb,plane}_format_transform_func`)
are defined to handle format conversion to/from internal format.
These things will allow us, in the future, to have different compositing
and wb format types.
V2: Change the code to get the drm_framebuffer reference and not copy its
contents(Thomas Zimmermann).
V3: Drop the refcount in the wb code(Thomas Zimmermann).
V5: Add {wb,plane}_format_transform_func to vkms_writeback_job
and vkms_plane_state (Pekka Paalanen)
Signed-off-by: Igor Torrente <igormtorrente@xxxxxxxxx>
---
drivers/gpu/drm/vkms/vkms_composer.c | 4 ++--
drivers/gpu/drm/vkms/vkms_drv.h | 31 +++++++++++++++++++++------
drivers/gpu/drm/vkms/vkms_plane.c | 10 ++++-----
drivers/gpu/drm/vkms/vkms_writeback.c | 20 ++++++++++++++---
4 files changed, 49 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c
index 2d946368a561..95029d2ebcac 100644
--- a/drivers/gpu/drm/vkms/vkms_composer.c
+++ b/drivers/gpu/drm/vkms/vkms_composer.c
@@ -153,7 +153,7 @@ static void compose_plane(struct vkms_frame_info *primary_plane_info,
struct vkms_frame_info *plane_frame_info,
void *vaddr_out)
{
- struct drm_framebuffer *fb = &plane_frame_info->fb;
+ struct drm_framebuffer *fb = plane_frame_info->fb;
void *vaddr;
void (*pixel_blend)(const u8 *p_src, u8 *p_dst);
@@ -175,7 +175,7 @@ static int compose_active_planes(void **vaddr_out,
struct vkms_frame_info *primary_plane_info,
struct vkms_crtc_state *crtc_state)
{
- struct drm_framebuffer *fb = &primary_plane_info->fb;
+ struct drm_framebuffer *fb = primary_plane_info->fb;
struct drm_gem_object *gem_obj = drm_gem_fb_get_obj(fb, 0);
const void *vaddr;
int i;
diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index 2e6342164bef..2704cfb6904b 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -22,13 +22,8 @@
#define NUM_OVERLAY_PLANES 8
-struct vkms_writeback_job {
- struct dma_buf_map map[DRM_FORMAT_MAX_PLANES];
- struct dma_buf_map data[DRM_FORMAT_MAX_PLANES];
-};
-
struct vkms_frame_info {
- struct drm_framebuffer fb;
+ struct drm_framebuffer *fb;
struct drm_rect src, dst;
struct dma_buf_map map[DRM_FORMAT_MAX_PLANES];
unsigned int offset;
@@ -36,6 +31,29 @@ struct vkms_frame_info {
unsigned int cpp;
};
+struct pixel_argb_u16 {
+ u16 a, r, g, b;
+};
+
+struct line_buffer {
+ size_t n_pixels;
+ struct pixel_argb_u16 *pixels;
+};
+
+typedef void
+(*wb_format_transform_func)(struct vkms_frame_info *frame_info,
+ const struct line_buffer *buffer, int y);
+
+typedef void
+(*plane_format_transform_func)(struct line_buffer *buffer,
+ const struct vkms_frame_info *frame_info, int y);
+
+struct vkms_writeback_job {
+ struct dma_buf_map data[DRM_FORMAT_MAX_PLANES];
+ struct vkms_frame_info frame_info;
+ wb_format_transform_func format_func;
+};
+
/**
* vkms_plane_state - Driver specific plane state
* @base: base plane state
@@ -44,6 +62,7 @@ struct vkms_frame_info {
struct vkms_plane_state {
struct drm_shadow_plane_state base;
struct vkms_frame_info *frame_info;
+ plane_format_transform_func format_func;
};
struct vkms_plane {
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index a56b0f76eddd..28752af0118c 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -50,12 +50,12 @@ static void vkms_plane_destroy_state(struct drm_plane *plane,
struct vkms_plane_state *vkms_state = to_vkms_plane_state(old_state);
struct drm_crtc *crtc = vkms_state->base.base.crtc;
- if (crtc) {
+ if (crtc && vkms_state->frame_info->fb) {
/* dropping the reference we acquired in
* vkms_primary_plane_update()
*/
- if (drm_framebuffer_read_refcount(&vkms_state->frame_info->fb))
- drm_framebuffer_put(&vkms_state->frame_info->fb);
+ if (drm_framebuffer_read_refcount(vkms_state->frame_info->fb))
+ drm_framebuffer_put(vkms_state->frame_info->fb);
}
kfree(vkms_state->frame_info);
@@ -110,9 +110,9 @@ static void vkms_plane_atomic_update(struct drm_plane *plane,
frame_info = vkms_plane_state->frame_info;
memcpy(&frame_info->src, &new_state->src, sizeof(struct drm_rect));
memcpy(&frame_info->dst, &new_state->dst, sizeof(struct drm_rect));
- memcpy(&frame_info->fb, fb, sizeof(struct drm_framebuffer));
+ frame_info->fb = fb;
memcpy(&frame_info->map, &shadow_plane_state->data, sizeof(frame_info->map));
- drm_framebuffer_get(&frame_info->fb);
+ drm_framebuffer_get(frame_info->fb);
frame_info->offset = fb->offsets[0];
frame_info->pitch = fb->pitches[0];
frame_info->cpp = fb->format->cpp[0];
diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
index 746cb0abc6ec..ad4bb1fb37ca 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -74,12 +74,15 @@ static int vkms_wb_prepare_job(struct drm_writeback_connector *wb_connector,
if (!vkmsjob)
return -ENOMEM;
- ret = drm_gem_fb_vmap(job->fb, vkmsjob->map, vkmsjob->data);
+ ret = drm_gem_fb_vmap(job->fb, vkmsjob->frame_info.map, vkmsjob->data);
if (ret) {
DRM_ERROR("vmap failed: %d\n", ret);
goto err_kfree;
}
+ vkmsjob->frame_info.fb = job->fb;
+ drm_framebuffer_get(vkmsjob->frame_info.fb);
+
job->priv = vkmsjob;
return 0;
@@ -98,7 +101,9 @@ static void vkms_wb_cleanup_job(struct drm_writeback_connector *connector,
if (!job->fb)
return;
- drm_gem_fb_vunmap(job->fb, vkmsjob->map);
+ drm_gem_fb_vunmap(job->fb, vkmsjob->frame_info.map);
+
+ drm_framebuffer_put(vkmsjob->frame_info.fb);
vkmsdev = drm_device_to_vkms_device(job->fb->dev);
vkms_set_composer(&vkmsdev->output, false);
@@ -115,14 +120,23 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
struct drm_writeback_connector *wb_conn = &output->wb_connector;
struct drm_connector_state *conn_state = wb_conn->base.state;
struct vkms_crtc_state *crtc_state = output->composer_state;
+ struct drm_framebuffer *fb = connector_state->writeback_job->fb;
+ struct vkms_writeback_job *active_wb;
+ struct vkms_frame_info *wb_frame_info;
if (!conn_state)
return;
vkms_set_composer(&vkmsdev->output, true);
+ active_wb = conn_state->writeback_job->priv;
+ wb_frame_info = &active_wb->frame_info;
+
spin_lock_irq(&output->composer_lock);
- crtc_state->active_writeback = conn_state->writeback_job->priv;
+ crtc_state->active_writeback = active_wb;
+ wb_frame_info->offset = fb->offsets[0];
+ wb_frame_info->pitch = fb->pitches[0];
+ wb_frame_info->cpp = fb->format->cpp[0];
crtc_state->wb_pending = true;
spin_unlock_irq(&output->composer_lock);
drm_writeback_queue_job(wb_conn, connector_state);
--
2.30.2
