From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Convert drm_atomic_plane_check() over to using explicit old vs. new
plane states. Avoids the confusion of "what does plane->state mean
again?".
v2: Stick to the multi-stage logic in plane_switching_crtc() (Daniel)
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
---
drivers/gpu/drm/drm_atomic.c | 85 +++++++++++++++++++-----------------
1 file changed, 46 insertions(+), 39 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 3a4b6b251971..9ac26437051b 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -497,14 +497,13 @@ drm_atomic_get_plane_state(struct drm_atomic_state *state,
EXPORT_SYMBOL(drm_atomic_get_plane_state);
static bool
-plane_switching_crtc(struct drm_atomic_state *state,
- struct drm_plane *plane,
- struct drm_plane_state *plane_state)
+plane_switching_crtc(const struct drm_plane_state *old_plane_state,
+ const struct drm_plane_state *new_plane_state)
{
- if (!plane->state->crtc || !plane_state->crtc)
+ if (!old_plane_state->crtc || !new_plane_state->crtc)
return false;
- if (plane->state->crtc == plane_state->crtc)
+ if (old_plane_state->crtc == new_plane_state->crtc)
return false;
/* This could be refined, but currently there's no helper or driver code
@@ -517,88 +516,95 @@ plane_switching_crtc(struct drm_atomic_state *state,
/**
* drm_atomic_plane_check - check plane state
- * @plane: plane to check
- * @state: plane state to check
+ * @old_plane_state: old plane state to check
+ * @new_plane_state: new plane state to check
*
* Provides core sanity checks for plane state.
*
* RETURNS:
* Zero on success, error code on failure
*/
-static int drm_atomic_plane_check(struct drm_plane *plane,
- struct drm_plane_state *state)
+static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state,
+ const struct drm_plane_state *new_plane_state)
{
+ struct drm_plane *plane = new_plane_state->plane;
+ struct drm_crtc *crtc = new_plane_state->crtc;
+ const struct drm_framebuffer *fb = new_plane_state->fb;
unsigned int fb_width, fb_height;
int ret;
/* either *both* CRTC and FB must be set, or neither */
- if (state->crtc && !state->fb) {
+ if (crtc && !fb) {
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] CRTC set but no FB\n",
plane->base.id, plane->name);
return -EINVAL;
- } else if (state->fb && !state->crtc) {
+ } else if (fb && !crtc) {
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] FB set but no CRTC\n",
plane->base.id, plane->name);
return -EINVAL;
}
/* if disabled, we don't care about the rest of the state: */
- if (!state->crtc)
+ if (!crtc)
return 0;
/* Check whether this plane is usable on this CRTC */
- if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) {
+ if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
DRM_DEBUG_ATOMIC("Invalid [CRTC:%d:%s] for [PLANE:%d:%s]\n",
- state->crtc->base.id, state->crtc->name,
+ crtc->base.id, crtc->name,
plane->base.id, plane->name);
return -EINVAL;
}
/* Check whether this plane supports the fb pixel format. */
- ret = drm_plane_check_pixel_format(plane, state->fb->format->format,
- state->fb->modifier);
+ ret = drm_plane_check_pixel_format(plane, fb->format->format,
+ fb->modifier);
if (ret) {
struct drm_format_name_buf format_name;
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %s, modifier 0x%llx\n",
plane->base.id, plane->name,
- drm_get_format_name(state->fb->format->format,
+ drm_get_format_name(fb->format->format,
&format_name),
- state->fb->modifier);
+ fb->modifier);
return ret;
}
/* Give drivers some help against integer overflows */
- if (state->crtc_w > INT_MAX ||
- state->crtc_x > INT_MAX - (int32_t) state->crtc_w ||
- state->crtc_h > INT_MAX ||
- state->crtc_y > INT_MAX - (int32_t) state->crtc_h) {
+ if (new_plane_state->crtc_w > INT_MAX ||
+ new_plane_state->crtc_x > INT_MAX - (int32_t) new_plane_state->crtc_w ||
+ new_plane_state->crtc_h > INT_MAX ||
+ new_plane_state->crtc_y > INT_MAX - (int32_t) new_plane_state->crtc_h) {
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid CRTC coordinates %ux%u+%d+%d\n",
plane->base.id, plane->name,
- state->crtc_w, state->crtc_h,
- state->crtc_x, state->crtc_y);
+ new_plane_state->crtc_w, new_plane_state->crtc_h,
+ new_plane_state->crtc_x, new_plane_state->crtc_y);
return -ERANGE;
}
- fb_width = state->fb->width << 16;
- fb_height = state->fb->height << 16;
+ fb_width = fb->width << 16;
+ fb_height = fb->height << 16;
/* Make sure source coordinates are inside the fb. */
- if (state->src_w > fb_width ||
- state->src_x > fb_width - state->src_w ||
- state->src_h > fb_height ||
- state->src_y > fb_height - state->src_h) {
+ if (new_plane_state->src_w > fb_width ||
+ new_plane_state->src_x > fb_width - new_plane_state->src_w ||
+ new_plane_state->src_h > fb_height ||
+ new_plane_state->src_y > fb_height - new_plane_state->src_h) {
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid source coordinates "
"%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
plane->base.id, plane->name,
- state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10,
- state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10,
- state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10,
- state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10,
- state->fb->width, state->fb->height);
+ new_plane_state->src_w >> 16,
+ ((new_plane_state->src_w & 0xffff) * 15625) >> 10,
+ new_plane_state->src_h >> 16,
+ ((new_plane_state->src_h & 0xffff) * 15625) >> 10,
+ new_plane_state->src_x >> 16,
+ ((new_plane_state->src_x & 0xffff) * 15625) >> 10,
+ new_plane_state->src_y >> 16,
+ ((new_plane_state->src_y & 0xffff) * 15625) >> 10,
+ fb->width, fb->height);
return -ENOSPC;
}
- if (plane_switching_crtc(state->state, plane, state)) {
+ if (plane_switching_crtc(old_plane_state, new_plane_state)) {
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
plane->base.id, plane->name);
return -EINVAL;
@@ -971,7 +977,8 @@ int drm_atomic_check_only(struct drm_atomic_state *state)
struct drm_device *dev = state->dev;
struct drm_mode_config *config = &dev->mode_config;
struct drm_plane *plane;
- struct drm_plane_state *plane_state;
+ struct drm_plane_state *old_plane_state;
+ struct drm_plane_state *new_plane_state;
struct drm_crtc *crtc;
struct drm_crtc_state *old_crtc_state;
struct drm_crtc_state *new_crtc_state;
@@ -981,8 +988,8 @@ int drm_atomic_check_only(struct drm_atomic_state *state)
DRM_DEBUG_ATOMIC("checking %p\n", state);
- for_each_new_plane_in_state(state, plane, plane_state, i) {
- ret = drm_atomic_plane_check(plane, plane_state);
+ for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) {
+ ret = drm_atomic_plane_check(old_plane_state, new_plane_state);
if (ret) {
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
plane->base.id, plane->name);
--
2.18.1
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