[PATCH v3 17/19] drm/i915: Make setting color key atomic.

Maarten Lankhorst
2015-06-15T10:34:14Z

By making color key atomic there are no more transitional helpers.
The plane check function will reject the color key when a scaler is
active.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
---
drivers/gpu/drm/i915/intel_atomic_plane.c | 1 +
drivers/gpu/drm/i915/intel_display.c | 7 ++-
drivers/gpu/drm/i915/intel_drv.h | 6 +--
drivers/gpu/drm/i915/intel_sprite.c | 85 +++++++++++++++----------------
4 files changed, 46 insertions(+), 53 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index 91d53768df9d..10a8ecedc942 100644
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -56,6 +56,7 @@ intel_create_plane_state(struct drm_plane *plane)

state->base.plane = plane;
state->base.rotation = BIT(DRM_ROTATE_0);
+ state->ckey.flags = I915_SET_COLORKEY_NONE;

return state;
}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 5facd0501a34..746c73d2ab84 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4401,9 +4401,9 @@ static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
return ret;

/* check colorkey */
- if (WARN_ON(intel_plane->ckey.flags != I915_SET_COLORKEY_NONE)) {
+ if (plane_state->ckey.flags != I915_SET_COLORKEY_NONE) {
DRM_DEBUG_KMS("[PLANE:%d] scaling with color key not allowed",
- intel_plane->base.base.id);
+ intel_plane->base.base.id);
return -EINVAL;
}

@@ -13733,7 +13733,7 @@ intel_check_primary_plane(struct drm_plane *plane,

/* use scaler when colorkey is not required */
if (INTEL_INFO(plane->dev)->gen >= 9 &&
- to_intel_plane(plane)->ckey.flags == I915_SET_COLORKEY_NONE) {
+ state->ckey.flags == I915_SET_COLORKEY_NONE) {
min_scale = 1;
max_scale = skl_max_scale(to_intel_crtc(crtc), crtc_state);
can_position = true;
@@ -13881,7 +13881,6 @@ static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
primary->check_plane = intel_check_primary_plane;
primary->commit_plane = intel_commit_primary_plane;
primary->disable_plane = intel_disable_primary_plane;
- primary->ckey.flags = I915_SET_COLORKEY_NONE;
if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
primary->plane = !pipe;

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 93b9542ab8dc..3a2ac82b0970 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -274,6 +274,8 @@ struct intel_plane_state {
* update_scaler_plane.
*/
int scaler_id;
+
+ struct drm_intel_sprite_colorkey ckey;
};

struct intel_initial_plane_config {
@@ -588,9 +590,6 @@ struct intel_plane {
bool can_scale;
int max_downscale;

- /* FIXME convert to properties */
- struct drm_intel_sprite_colorkey ckey;
-
/* Since we need to change the watermarks before/after
* enabling/disabling the planes, we need to store the parameters here
* as the other pieces of the struct may not reflect the values we want
@@ -1390,7 +1389,6 @@ bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob);

/* intel_sprite.c */
int intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane);
-int intel_plane_restore(struct drm_plane *plane);
int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
struct drm_file *file_priv);
bool intel_pipe_update_start(struct intel_crtc *crtc,
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 168f90f346c2..21d3f7882c4d 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -182,7 +182,8 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
const int plane = intel_plane->plane + 1;
u32 plane_ctl, stride_div, stride;
int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
- const struct drm_intel_sprite_colorkey *key = &intel_plane->ckey;
+ const struct drm_intel_sprite_colorkey *key =
+ &to_intel_plane_state(drm_plane->state)->ckey;
unsigned long surf_addr;
u32 tile_height, plane_offset, plane_size;
unsigned int rotation;
@@ -344,7 +345,8 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
u32 sprctl;
unsigned long sprsurf_offset, linear_offset;
int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
- const struct drm_intel_sprite_colorkey *key = &intel_plane->ckey;
+ const struct drm_intel_sprite_colorkey *key =
+ &to_intel_plane_state(dplane->state)->ckey;

sprctl = SP_ENABLE;

@@ -487,7 +489,8 @@ ivb_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
u32 sprctl, sprscale = 0;
unsigned long sprsurf_offset, linear_offset;
int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
- const struct drm_intel_sprite_colorkey *key = &intel_plane->ckey;
+ const struct drm_intel_sprite_colorkey *key =
+ &to_intel_plane_state(plane->state)->ckey;

sprctl = SPRITE_ENABLE;

@@ -627,7 +630,8 @@ ilk_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
unsigned long dvssurf_offset, linear_offset;
u32 dvscntr, dvsscale;
int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
- const struct drm_intel_sprite_colorkey *key = &intel_plane->ckey;
+ const struct drm_intel_sprite_colorkey *key =
+ &to_intel_plane_state(plane->state)->ckey;

dvscntr = DVS_ENABLE;

@@ -778,7 +782,7 @@ intel_check_sprite_plane(struct drm_plane *plane,
/* setup can_scale, min_scale, max_scale */
if (INTEL_INFO(dev)->gen >= 9) {
/* use scaler when colorkey is not required */
- if (intel_plane->ckey.flags == I915_SET_COLORKEY_NONE) {
+ if (state->ckey.flags == I915_SET_COLORKEY_NONE) {
can_scale = 1;
min_scale = 1;
max_scale = skl_max_scale(intel_crtc, crtc_state);
@@ -798,7 +802,6 @@ intel_check_sprite_plane(struct drm_plane *plane,
* coordinates and sizes. We probably need some way to decide whether
* more strict checking should be done instead.
*/
-
drm_rect_rotate(src, fb->width << 16, fb->height << 16,
state->base.rotation);

@@ -808,7 +811,7 @@ intel_check_sprite_plane(struct drm_plane *plane,
vscale = drm_rect_calc_vscale_relaxed(src, dst, min_scale, max_scale);
BUG_ON(vscale < 0);

- state->visible = drm_rect_clip_scaled(src, dst, clip, hscale, vscale);
+ state->visible = drm_rect_clip_scaled(src, dst, clip, hscale, vscale);

crtc_x = dst->x1;
crtc_y = dst->y1;
@@ -950,7 +953,9 @@ int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
{
struct drm_intel_sprite_colorkey *set = data;
struct drm_plane *plane;
- struct intel_plane *intel_plane;
+ struct drm_plane_state *plane_state;
+ struct drm_atomic_state *state;
+ struct drm_modeset_acquire_ctx ctx;
int ret = 0;

/* Make sure we don't try to enable both src & dest simultaneously */
@@ -961,50 +966,41 @@ int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
set->flags & I915_SET_COLORKEY_DESTINATION)
return -EINVAL;

- drm_modeset_lock_all(dev);
-
plane = drm_plane_find(dev, set->plane_id);
- if (!plane || plane->type != DRM_PLANE_TYPE_OVERLAY) {
- ret = -ENOENT;
- goto out_unlock;
- }
+ if (!plane || plane->type != DRM_PLANE_TYPE_OVERLAY)
+ return -ENOENT;

- intel_plane = to_intel_plane(plane);
+ drm_modeset_acquire_init(&ctx, 0);

- if (INTEL_INFO(dev)->gen >= 9) {
- /* plane scaling and colorkey are mutually exclusive */
- if (to_intel_plane_state(plane->state)->scaler_id >= 0) {
- DRM_ERROR("colorkey not allowed with scaler\n");
- ret = -EINVAL;
- goto out_unlock;
- }
+ state = drm_atomic_state_alloc(plane->dev);
+ if (!state) {
+ ret = -ENOMEM;
+ goto out;
}
+ state->acquire_ctx = &ctx;
+
+ while (1) {
+ plane_state = drm_atomic_get_plane_state(state, plane);
+ ret = PTR_ERR_OR_ZERO(plane_state);
+ if (!ret) {
+ to_intel_plane_state(plane_state)->ckey = *set;
+ ret = drm_atomic_commit(state);
+ }

- intel_plane->ckey = *set;
-
- /*
- * The only way this could fail would be due to
- * the current plane state being unsupportable already,
- * and we dont't consider that an error for the
- * colorkey ioctl. So just ignore any error.
- */
- intel_plane_restore(plane);
+ if (ret != -EDEADLK)
+ break;

-out_unlock:
- drm_modeset_unlock_all(dev);
- return ret;
-}
+ drm_atomic_state_clear(state);
+ drm_modeset_backoff(&ctx);
+ }

-int intel_plane_restore(struct drm_plane *plane)
-{
- if (!plane->crtc || !plane->state->fb)
- return 0;
+ if (ret)
+ drm_atomic_state_free(state);

- return drm_plane_helper_update(plane, plane->crtc, plane->state->fb,
- plane->state->crtc_x, plane->state->crtc_y,
- plane->state->crtc_w, plane->state->crtc_h,
- plane->state->src_x, plane->state->src_y,
- plane->state->src_w, plane->state->src_h);
+out:
+ drm_modeset_drop_locks(&ctx);
+ drm_modeset_acquire_fini(&ctx);
+ return ret;
}

static const uint32_t ilk_plane_formats[] = {
@@ -1133,7 +1129,6 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
intel_plane->plane = plane;
intel_plane->check_plane = intel_check_sprite_plane;
intel_plane->commit_plane = intel_commit_sprite_plane;
- intel_plane->ckey.flags = I915_SET_COLORKEY_NONE;
possible_crtcs = (1 << pipe);
ret = drm_universal_plane_init(dev, &intel_plane->base, possible_crtcs,
&intel_plane_funcs,