summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/omapdrm/omap_drv.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/omapdrm/omap_drv.c')
-rw-r--r--drivers/gpu/drm/omapdrm/omap_drv.c196
1 files changed, 192 insertions, 4 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index c05d3975cb31..2720a58ccd90 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -117,6 +117,102 @@ static void omap_atomic_commit_tail(struct drm_atomic_state *old_state)
dispc_runtime_put(priv->dispc);
}
+static int drm_atomic_state_normalized_zpos_cmp(const void *a, const void *b)
+{
+ const struct drm_plane_state *sa = *(struct drm_plane_state **)a;
+ const struct drm_plane_state *sb = *(struct drm_plane_state **)b;
+
+ if (sa->normalized_zpos != sb->normalized_zpos)
+ return sa->normalized_zpos - sb->normalized_zpos;
+ else
+ return sa->plane->base.id - sb->plane->base.id;
+}
+
+/*
+ * This replaces the drm_atomic_normalize_zpos to handle the dual overlay case.
+ *
+ * Since both halves need to be 'appear' side by side the zpos is
+ * recalculated when dealing with dual overlay cases so that the other
+ * planes zpos is consistent.
+ */
+static int omap_atomic_update_normalize_zpos(struct drm_device *dev,
+ struct drm_atomic_state *state)
+{
+ struct drm_crtc *crtc;
+ struct drm_crtc_state *old_state, *new_state;
+ struct drm_plane *plane;
+ int c, i, n, inc;
+ int total_planes = dev->mode_config.num_total_plane;
+ struct drm_plane_state **states;
+ int ret = 0;
+
+ states = kmalloc_array(total_planes, sizeof(*states), GFP_KERNEL);
+ if (!states)
+ return -ENOMEM;
+
+ for_each_oldnew_crtc_in_state(state, crtc, old_state, new_state, c) {
+ if (old_state->plane_mask == new_state->plane_mask &&
+ !new_state->zpos_changed)
+ continue;
+
+ /* Reset plane increment and index value for every crtc */
+ n = 0;
+
+ /*
+ * Normalization process might create new states for planes
+ * which normalized_zpos has to be recalculated.
+ */
+ drm_for_each_plane_mask(plane, dev, new_state->plane_mask) {
+ struct drm_plane_state *plane_state =
+ drm_atomic_get_plane_state(new_state->state,
+ plane);
+ if (IS_ERR(plane_state)) {
+ ret = PTR_ERR(plane_state);
+ goto done;
+ }
+ states[n++] = plane_state;
+ }
+
+ sort(states, n, sizeof(*states),
+ drm_atomic_state_normalized_zpos_cmp, NULL);
+
+ for (i = 0, inc = 0; i < n; i++) {
+ plane = states[i]->plane;
+
+ states[i]->normalized_zpos = i + inc;
+ DRM_DEBUG_ATOMIC("[PLANE:%d:%s] updated normalized zpos value %d\n",
+ plane->base.id, plane->name,
+ states[i]->normalized_zpos);
+
+ if (is_omap_plane_dual_overlay(states[i]))
+ inc++;
+ }
+ new_state->zpos_changed = true;
+ }
+
+done:
+ kfree(states);
+ return ret;
+}
+
+static int omap_atomic_check(struct drm_device *dev,
+ struct drm_atomic_state *state)
+{
+ int ret;
+
+ ret = drm_atomic_helper_check(dev, state);
+ if (ret)
+ return ret;
+
+ if (dev->mode_config.normalize_zpos) {
+ ret = omap_atomic_update_normalize_zpos(dev, state);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
static const struct drm_mode_config_helper_funcs omap_mode_config_helper_funcs = {
.atomic_commit_tail = omap_atomic_commit_tail,
};
@@ -124,10 +220,86 @@ static const struct drm_mode_config_helper_funcs omap_mode_config_helper_funcs =
static const struct drm_mode_config_funcs omap_mode_config_funcs = {
.fb_create = omap_framebuffer_create,
.output_poll_changed = drm_fb_helper_output_poll_changed,
- .atomic_check = drm_atomic_helper_check,
+ .atomic_check = omap_atomic_check,
.atomic_commit = drm_atomic_helper_commit,
};
+/* Global/shared object state funcs */
+
+/*
+ * This is a helper that returns the private state currently in operation.
+ * Note that this would return the "old_state" if called in the atomic check
+ * path, and the "new_state" after the atomic swap has been done.
+ */
+struct omap_global_state *
+omap_get_existing_global_state(struct omap_drm_private *priv)
+{
+ return to_omap_global_state(priv->glob_obj.state);
+}
+
+/*
+ * This acquires the modeset lock set aside for global state, creates
+ * a new duplicated private object state.
+ */
+struct omap_global_state *__must_check
+omap_get_global_state(struct drm_atomic_state *s)
+{
+ struct omap_drm_private *priv = s->dev->dev_private;
+ struct drm_private_state *priv_state;
+
+ priv_state = drm_atomic_get_private_obj_state(s, &priv->glob_obj);
+ if (IS_ERR(priv_state))
+ return ERR_CAST(priv_state);
+
+ return to_omap_global_state(priv_state);
+}
+
+static struct drm_private_state *
+omap_global_duplicate_state(struct drm_private_obj *obj)
+{
+ struct omap_global_state *state;
+
+ state = kmemdup(obj->state, sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ __drm_atomic_helper_private_obj_duplicate_state(obj, &state->base);
+
+ return &state->base;
+}
+
+static void omap_global_destroy_state(struct drm_private_obj *obj,
+ struct drm_private_state *state)
+{
+ struct omap_global_state *omap_state = to_omap_global_state(state);
+
+ kfree(omap_state);
+}
+
+static const struct drm_private_state_funcs omap_global_state_funcs = {
+ .atomic_duplicate_state = omap_global_duplicate_state,
+ .atomic_destroy_state = omap_global_destroy_state,
+};
+
+static int omap_global_obj_init(struct drm_device *dev)
+{
+ struct omap_drm_private *priv = dev->dev_private;
+ struct omap_global_state *state;
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return -ENOMEM;
+
+ drm_atomic_private_obj_init(dev, &priv->glob_obj, &state->base,
+ &omap_global_state_funcs);
+ return 0;
+}
+
+static void omap_global_obj_fini(struct omap_drm_private *priv)
+{
+ drm_atomic_private_obj_fini(&priv->glob_obj);
+}
+
static void omap_disconnect_pipelines(struct drm_device *ddev)
{
struct omap_drm_private *priv = ddev->dev_private;
@@ -231,8 +403,6 @@ static int omap_modeset_init(struct drm_device *dev)
if (!omapdss_stack_is_ready())
return -EPROBE_DEFER;
- drm_mode_config_init(dev);
-
ret = omap_modeset_init_properties(dev);
if (ret < 0)
return ret;
@@ -583,10 +753,20 @@ static int omapdrm_init(struct omap_drm_private *priv, struct device *dev)
omap_gem_init(ddev);
+ drm_mode_config_init(ddev);
+
+ ret = omap_global_obj_init(ddev);
+ if (ret)
+ goto err_gem_deinit;
+
+ ret = omap_hwoverlays_init(priv);
+ if (ret)
+ goto err_free_priv_obj;
+
ret = omap_modeset_init(ddev);
if (ret) {
dev_err(priv->dev, "omap_modeset_init failed: ret=%d\n", ret);
- goto err_gem_deinit;
+ goto err_free_overlays;
}
/* Initialize vblank handling, start with all CRTCs disabled. */
@@ -618,7 +798,12 @@ err_cleanup_helpers:
omap_fbdev_fini(ddev);
err_cleanup_modeset:
omap_modeset_fini(ddev);
+err_free_overlays:
+ omap_hwoverlays_destroy(priv);
+err_free_priv_obj:
+ omap_global_obj_fini(priv);
err_gem_deinit:
+ drm_mode_config_cleanup(ddev);
omap_gem_deinit(ddev);
destroy_workqueue(priv->wq);
omap_disconnect_pipelines(ddev);
@@ -642,6 +827,9 @@ static void omapdrm_cleanup(struct omap_drm_private *priv)
drm_atomic_helper_shutdown(ddev);
omap_modeset_fini(ddev);
+ omap_hwoverlays_destroy(priv);
+ omap_global_obj_fini(priv);
+ drm_mode_config_cleanup(ddev);
omap_gem_deinit(ddev);
destroy_workqueue(priv->wq);