int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_obj_set_property *arg = data;
struct drm_mode_object *arg_obj;
struct drm_property *property;
int ret = -EINVAL;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
arg_obj = drm_mode_object_find(dev, file_priv, arg->obj_id, arg->obj_type);
if (!arg_obj)
return -ENOENT;
if (!arg_obj->properties)
goto out_unref;
property = drm_mode_obj_find_prop_id(arg_obj, arg->prop_id);
if (!property)
goto out_unref;
if (drm_drv_uses_atomic_modeset(property->dev))
ret = set_property_atomic(arg_obj, property, arg->value);
else
ret = set_property_legacy(arg_obj, property, arg->value);
out_unref:
drm_mode_object_put(arg_obj);
return ret;
}
static int __setplane_atomic(struct drm_plane *plane,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int32_t crtc_x, int32_t crtc_y,
uint32_t crtc_w, uint32_t crtc_h,
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h,
struct drm_modeset_acquire_ctx *ctx)
{
int ret;
WARN_ON(!drm_drv_uses_atomic_modeset(plane->dev));
/* No fb means shut it down */
if (!fb)
return plane->funcs->disable_plane(plane, ctx);
/*
* FIXME: This is redundant with drm_atomic_plane_check(),
* but the legacy cursor/"async" .update_plane() tricks
* don't call that so we still need this here. Should remove
* this when all .update_plane() implementations have been
* fixed to call drm_atomic_plane_check().
*/
ret = __setplane_check(plane, crtc, fb,
crtc_x, crtc_y, crtc_w, crtc_h,
src_x, src_y, src_w, src_h);
if (ret)
return ret;
return plane->funcs->update_plane(plane, crtc, fb,
crtc_x, crtc_y, crtc_w, crtc_h,
src_x, src_y, src_w, src_h, ctx);
}
/**
* drm_object_property_get_value - retrieve the value of a property
* @obj: drm mode object to get property value from
* @property: property to retrieve
* @val: storage for the property value
*
* This function retrieves the softare state of the given property for the given
* property. Since there is no driver callback to retrieve the current property
* value this might be out of sync with the hardware, depending upon the driver
* and property.
*
* Atomic drivers should never call this function directly, the core will read
* out property values through the various ->atomic_get_property callbacks.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_object_property_get_value(struct drm_mode_object *obj,
struct drm_property *property, uint64_t *val)
{
WARN_ON(drm_drv_uses_atomic_modeset(property->dev));
return __drm_object_property_get_value(obj, property, val);
}
int drm_crtc_force_disable(struct drm_crtc *crtc)
{
struct drm_mode_set set = {
.crtc = crtc,
};
WARN_ON(drm_drv_uses_atomic_modeset(crtc->dev));
return drm_mode_set_config_internal(&set);
}
/*
* __setplane_internal - setplane handler for internal callers
*
* This function will take a reference on the new fb for the plane
* on success.
*
* src_{x,y,w,h} are provided in 16.16 fixed point format
*/
static int __setplane_internal(struct drm_plane *plane,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int32_t crtc_x, int32_t crtc_y,
uint32_t crtc_w, uint32_t crtc_h,
/* src_{x,y,w,h} values are 16.16 fixed point */
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h,
struct drm_modeset_acquire_ctx *ctx)
{
int ret = 0;
WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));
/* No fb means shut it down */
if (!fb) {
plane->old_fb = plane->fb;
ret = plane->funcs->disable_plane(plane, ctx);
if (!ret) {
plane->crtc = NULL;
plane->fb = NULL;
} else {
plane->old_fb = NULL;
}
goto out;
}
ret = __setplane_check(plane, crtc, fb,
crtc_x, crtc_y, crtc_w, crtc_h,
src_x, src_y, src_w, src_h);
if (ret)
goto out;
plane->old_fb = plane->fb;
ret = plane->funcs->update_plane(plane, crtc, fb,
crtc_x, crtc_y, crtc_w, crtc_h,
src_x, src_y, src_w, src_h, ctx);
if (!ret) {
plane->crtc = crtc;
plane->fb = fb;
drm_framebuffer_get(plane->fb);
} else {
plane->old_fb = NULL;
}
out:
if (plane->old_fb)
drm_framebuffer_put(plane->old_fb);
plane->old_fb = NULL;
return ret;
}
/**
* drm_object_property_set_value - set the value of a property
* @obj: drm mode object to set property value for
* @property: property to set
* @val: value the property should be set to
*
* This function sets a given property on a given object. This function only
* changes the software state of the property, it does not call into the
* driver's ->set_property callback.
*
* Note that atomic drivers should not have any need to call this, the core will
* ensure consistency of values reported back to userspace through the
* appropriate ->atomic_get_property callback. Only legacy drivers should call
* this function to update the tracked value (after clamping and other
* restrictions have been applied).
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_object_property_set_value(struct drm_mode_object *obj,
struct drm_property *property, uint64_t val)
{
int i;
WARN_ON(drm_drv_uses_atomic_modeset(property->dev) &&
!(property->flags & DRM_MODE_PROP_IMMUTABLE));
for (i = 0; i < obj->properties->count; i++) {
if (obj->properties->properties[i] == property) {
obj->properties->values[i] = val;
return 0;
}
}
return -EINVAL;
}
/**
* drm_plane_force_disable - Forcibly disable a plane
* @plane: plane to disable
*
* Forces the plane to be disabled.
*
* Used when the plane's current framebuffer is destroyed,
* and when restoring fbdev mode.
*
* Note that this function is not suitable for atomic drivers, since it doesn't
* wire through the lock acquisition context properly and hence can't handle
* retries or driver private locks. You probably want to use
* drm_atomic_helper_disable_plane() or
* drm_atomic_helper_disable_planes_on_crtc() instead.
*/
void drm_plane_force_disable(struct drm_plane *plane)
{
int ret;
if (!plane->fb)
return;
WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));
plane->old_fb = plane->fb;
ret = plane->funcs->disable_plane(plane, NULL);
if (ret) {
DRM_ERROR("failed to disable plane with busy fb\n");
plane->old_fb = NULL;
return;
}
/* disconnect the plane from the fb and crtc: */
drm_framebuffer_put(plane->old_fb);
plane->old_fb = NULL;
plane->fb = NULL;
plane->crtc = NULL;
}
static int setplane_internal(struct drm_plane *plane,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int32_t crtc_x, int32_t crtc_y,
uint32_t crtc_w, uint32_t crtc_h,
/* src_{x,y,w,h} values are 16.16 fixed point */
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h)
{
struct drm_modeset_acquire_ctx ctx;
int ret;
drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
retry:
ret = drm_modeset_lock_all_ctx(plane->dev, &ctx);
if (ret)
goto fail;
if (drm_drv_uses_atomic_modeset(plane->dev))
ret = __setplane_atomic(plane, crtc, fb,
crtc_x, crtc_y, crtc_w, crtc_h,
src_x, src_y, src_w, src_h, &ctx);
else
ret = __setplane_internal(plane, crtc, fb,
crtc_x, crtc_y, crtc_w, crtc_h,
src_x, src_y, src_w, src_h, &ctx);
fail:
if (ret == -EDEADLK) {
ret = drm_modeset_backoff(&ctx);
if (!ret)
goto retry;
}
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
return ret;
}
static int __drm_object_property_get_value(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t *val)
{
int i;
/* read-only properties bypass atomic mechanism and still store
* their value in obj->properties->values[].. mostly to avoid
* having to deal w/ EDID and similar props in atomic paths:
*/
if (drm_drv_uses_atomic_modeset(property->dev) &&
!(property->flags & DRM_MODE_PROP_IMMUTABLE))
return drm_atomic_get_property(obj, property, val);
for (i = 0; i < obj->properties->count; i++) {
if (obj->properties->properties[i] == property) {
*val = obj->properties->values[i];
return 0;
}
}
return -EINVAL;
}
/**
* drm_crtc_init_with_planes - Initialise a new CRTC object with
* specified primary and cursor planes.
* @dev: DRM device
* @crtc: CRTC object to init
* @primary: Primary plane for CRTC
* @cursor: Cursor plane for CRTC
* @funcs: callbacks for the new CRTC
* @name: printf style format string for the CRTC name, or NULL for default name
*
* Inits a new object created as base part of a driver crtc object. Drivers
* should use this function instead of drm_crtc_init(), which is only provided
* for backwards compatibility with drivers which do not yet support universal
* planes). For really simple hardware which has only 1 plane look at
* drm_simple_display_pipe_init() instead.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
struct drm_plane *primary,
struct drm_plane *cursor,
const struct drm_crtc_funcs *funcs,
const char *name, ...)
{
struct drm_mode_config *config = &dev->mode_config;
int ret;
WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
/* crtc index is used with 32bit bitmasks */
if (WARN_ON(config->num_crtc >= 32))
return -EINVAL;
WARN_ON(drm_drv_uses_atomic_modeset(dev) &&
(!funcs->atomic_destroy_state ||
!funcs->atomic_duplicate_state));
crtc->dev = dev;
crtc->funcs = funcs;
INIT_LIST_HEAD(&crtc->commit_list);
spin_lock_init(&crtc->commit_lock);
drm_modeset_lock_init(&crtc->mutex);
ret = drm_mode_object_add(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
if (ret)
return ret;
if (name) {
va_list ap;
va_start(ap, name);
crtc->name = kvasprintf(GFP_KERNEL, name, ap);
va_end(ap);
} else {
crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
drm_num_crtcs(dev));
}
if (!crtc->name) {
drm_mode_object_unregister(dev, &crtc->base);
return -ENOMEM;
}
crtc->fence_context = dma_fence_context_alloc(1);
spin_lock_init(&crtc->fence_lock);
snprintf(crtc->timeline_name, sizeof(crtc->timeline_name),
"CRTC:%d-%s", crtc->base.id, crtc->name);
crtc->base.properties = &crtc->properties;
list_add_tail(&crtc->head, &config->crtc_list);
crtc->index = config->num_crtc++;
crtc->primary = primary;
crtc->cursor = cursor;
if (primary && !primary->possible_crtcs)
primary->possible_crtcs = drm_crtc_mask(crtc);
if (cursor && !cursor->possible_crtcs)
cursor->possible_crtcs = drm_crtc_mask(crtc);
ret = drm_crtc_crc_init(crtc);
if (ret) {
drm_mode_object_unregister(dev, &crtc->base);
return ret;
}
if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
drm_object_attach_property(&crtc->base, config->prop_active, 0);
drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
drm_object_attach_property(&crtc->base,
config->prop_out_fence_ptr, 0);
drm_object_attach_property(&crtc->base,
config->prop_vrr_enabled, 0);
}
return 0;
}
static int crtc_crc_open(struct inode *inode, struct file *filep)
{
struct drm_crtc *crtc = inode->i_private;
struct drm_crtc_crc *crc = &crtc->crc;
struct drm_crtc_crc_entry *entries = NULL;
size_t values_cnt;
int ret = 0;
if (drm_drv_uses_atomic_modeset(crtc->dev)) {
ret = drm_modeset_lock_single_interruptible(&crtc->mutex);
if (ret)
return ret;
if (!crtc->state->active)
ret = -EIO;
drm_modeset_unlock(&crtc->mutex);
if (ret)
return ret;
}
spin_lock_irq(&crc->lock);
if (!crc->opened)
crc->opened = true;
else
ret = -EBUSY;
spin_unlock_irq(&crc->lock);
if (ret)
return ret;
ret = crtc->funcs->set_crc_source(crtc, crc->source, &values_cnt);
if (ret)
goto err;
if (WARN_ON(values_cnt > DRM_MAX_CRC_NR)) {
ret = -EINVAL;
goto err_disable;
}
if (WARN_ON(values_cnt == 0)) {
ret = -EINVAL;
goto err_disable;
}
entries = kcalloc(DRM_CRC_ENTRIES_NR, sizeof(*entries), GFP_KERNEL);
if (!entries) {
ret = -ENOMEM;
goto err_disable;
}
spin_lock_irq(&crc->lock);
crc->entries = entries;
crc->values_cnt = values_cnt;
/*
* Only return once we got a first frame, so userspace doesn't have to
* guess when this particular piece of HW will be ready to start
* generating CRCs.
*/
ret = wait_event_interruptible_lock_irq(crc->wq,
crtc_crc_data_count(crc),
crc->lock);
spin_unlock_irq(&crc->lock);
if (ret)
goto err_disable;
return 0;
err_disable:
crtc->funcs->set_crc_source(crtc, NULL, &values_cnt);
err:
spin_lock_irq(&crc->lock);
crtc_crc_cleanup(crc);
spin_unlock_irq(&crc->lock);
return ret;
}
static int drm_mode_cursor_universal(struct drm_crtc *crtc,
struct drm_mode_cursor2 *req,
struct drm_file *file_priv,
struct drm_modeset_acquire_ctx *ctx)
{
struct drm_device *dev = crtc->dev;
struct drm_plane *plane = crtc->cursor;
struct drm_framebuffer *fb = NULL;
struct drm_mode_fb_cmd2 fbreq = {
.width = req->width,
.height = req->height,
.pixel_format = DRM_FORMAT_ARGB8888,
.pitches = { req->width * 4 },
.handles = { req->handle },
};
int32_t crtc_x, crtc_y;
uint32_t crtc_w = 0, crtc_h = 0;
uint32_t src_w = 0, src_h = 0;
int ret = 0;
BUG_ON(!plane);
WARN_ON(plane->crtc != crtc && plane->crtc != NULL);
/*
* Obtain fb we'll be using (either new or existing) and take an extra
* reference to it if fb != null. setplane will take care of dropping
* the reference if the plane update fails.
*/
if (req->flags & DRM_MODE_CURSOR_BO) {
if (req->handle) {
fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv);
if (IS_ERR(fb)) {
DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
return PTR_ERR(fb);
}
fb->hot_x = req->hot_x;
fb->hot_y = req->hot_y;
} else {
fb = NULL;
}
} else {
if (plane->state)
fb = plane->state->fb;
else
fb = plane->fb;
if (fb)
drm_framebuffer_get(fb);
}
if (req->flags & DRM_MODE_CURSOR_MOVE) {
crtc_x = req->x;
crtc_y = req->y;
} else {
crtc_x = crtc->cursor_x;
crtc_y = crtc->cursor_y;
}
if (fb) {
crtc_w = fb->width;
crtc_h = fb->height;
src_w = fb->width << 16;
src_h = fb->height << 16;
}
if (drm_drv_uses_atomic_modeset(dev))
ret = __setplane_atomic(plane, crtc, fb,
crtc_x, crtc_y, crtc_w, crtc_h,
0, 0, src_w, src_h, ctx);
else
ret = __setplane_internal(plane, crtc, fb,
crtc_x, crtc_y, crtc_w, crtc_h,
0, 0, src_w, src_h, ctx);
if (fb)
drm_framebuffer_put(fb);
/* Update successful; save new cursor position, if necessary */
if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
crtc->cursor_x = req->x;
crtc->cursor_y = req->y;
}
return ret;
}
static int drm_mode_cursor_common(struct drm_device *dev,
struct drm_mode_cursor2 *req,
struct drm_file *file_priv)
{
struct drm_crtc *crtc;
struct drm_modeset_acquire_ctx ctx;
int ret = 0;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EOPNOTSUPP;
if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
return -EINVAL;
crtc = drm_crtc_find(dev, file_priv, req->crtc_id);
if (!crtc) {
DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
return -ENOENT;
}
drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
retry:
ret = drm_modeset_lock(&crtc->mutex, &ctx);
if (ret)
goto out;
/*
* If this crtc has a universal cursor plane, call that plane's update
* handler rather than using legacy cursor handlers.
*/
if (crtc->cursor) {
ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
if (ret)
goto out;
ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx);
goto out;
}
if (req->flags & DRM_MODE_CURSOR_BO) {
if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
ret = -ENXIO;
goto out;
}
/* Turns off the cursor if handle is 0 */
if (crtc->funcs->cursor_set2)
ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
req->width, req->height, req->hot_x, req->hot_y);
else
ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
req->width, req->height);
}
if (req->flags & DRM_MODE_CURSOR_MOVE) {
if (crtc->funcs->cursor_move) {
ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
} else {
ret = -EFAULT;
goto out;
}
}
out:
if (ret == -EDEADLK) {
ret = drm_modeset_backoff(&ctx);
if (!ret)
goto retry;
}
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
return ret;
}
int drm_mode_cursor_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_cursor *req = data;
struct drm_mode_cursor2 new_req;
memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
new_req.hot_x = new_req.hot_y = 0;
return drm_mode_cursor_common(dev, &new_req, file_priv);
}
/*
* Set the cursor configuration based on user request. This implements the 2nd
* version of the cursor ioctl, which allows userspace to additionally specify
* the hotspot of the pointer.
*/
int drm_mode_cursor2_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_cursor2 *req = data;
return drm_mode_cursor_common(dev, req, file_priv);
}
int drm_mode_page_flip_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_crtc_page_flip_target *page_flip = data;
struct drm_crtc *crtc;
struct drm_plane *plane;
struct drm_framebuffer *fb = NULL, *old_fb;
struct drm_pending_vblank_event *e = NULL;
u32 target_vblank = page_flip->sequence;
struct drm_modeset_acquire_ctx ctx;
int ret = -EINVAL;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EOPNOTSUPP;
if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS)
return -EINVAL;
if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET))
return -EINVAL;
/* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags
* can be specified
*/
if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET)
return -EINVAL;
if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
return -EINVAL;
crtc = drm_crtc_find(dev, file_priv, page_flip->crtc_id);
if (!crtc)
return -ENOENT;
plane = crtc->primary;
if (crtc->funcs->page_flip_target) {
u32 current_vblank;
int r;
r = drm_crtc_vblank_get(crtc);
if (r)
return r;
current_vblank = (u32)drm_crtc_vblank_count(crtc);
switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) {
case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE:
if ((int)(target_vblank - current_vblank) > 1) {
DRM_DEBUG("Invalid absolute flip target %u, "
"must be <= %u\n", target_vblank,
current_vblank + 1);
drm_crtc_vblank_put(crtc);
return -EINVAL;
}
break;
case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE:
if (target_vblank != 0 && target_vblank != 1) {
DRM_DEBUG("Invalid relative flip target %u, "
"must be 0 or 1\n", target_vblank);
drm_crtc_vblank_put(crtc);
return -EINVAL;
}
target_vblank += current_vblank;
break;
default:
target_vblank = current_vblank +
!(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC);
break;
}
} else if (crtc->funcs->page_flip == NULL ||
(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) {
return -EINVAL;
}
drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
retry:
ret = drm_modeset_lock(&crtc->mutex, &ctx);
if (ret)
goto out;
ret = drm_modeset_lock(&plane->mutex, &ctx);
if (ret)
goto out;
if (plane->state)
old_fb = plane->state->fb;
else
old_fb = plane->fb;
if (old_fb == NULL) {
/* The framebuffer is currently unbound, presumably
* due to a hotplug event, that userspace has not
* yet discovered.
*/
ret = -EBUSY;
goto out;
}
fb = drm_framebuffer_lookup(dev, file_priv, page_flip->fb_id);
if (!fb) {
ret = -ENOENT;
goto out;
}
if (plane->state) {
const struct drm_plane_state *state = plane->state;
ret = drm_framebuffer_check_src_coords(state->src_x,
state->src_y,
state->src_w,
state->src_h,
fb);
} else {
ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y,
&crtc->mode, fb);
}
if (ret)
goto out;
if (old_fb->format != fb->format) {
DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
ret = -EINVAL;
goto out;
}
if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
e = kzalloc(sizeof *e, GFP_KERNEL);
if (!e) {
ret = -ENOMEM;
goto out;
}
e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
e->event.base.length = sizeof(e->event);
e->event.vbl.user_data = page_flip->user_data;
e->event.vbl.crtc_id = crtc->base.id;
ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
if (ret) {
kfree(e);
e = NULL;
goto out;
}
}
plane->old_fb = plane->fb;
if (crtc->funcs->page_flip_target)
ret = crtc->funcs->page_flip_target(crtc, fb, e,
page_flip->flags,
target_vblank,
&ctx);
else
ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags,
&ctx);
if (ret) {
if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
drm_event_cancel_free(dev, &e->base);
/* Keep the old fb, don't unref it. */
plane->old_fb = NULL;
} else {
if (!plane->state) {
plane->fb = fb;
drm_framebuffer_get(fb);
}
}
out:
if (fb)
drm_framebuffer_put(fb);
if (plane->old_fb)
drm_framebuffer_put(plane->old_fb);
plane->old_fb = NULL;
if (ret == -EDEADLK) {
ret = drm_modeset_backoff(&ctx);
if (!ret)
goto retry;
}
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
if (ret && crtc->funcs->page_flip_target)
drm_crtc_vblank_put(crtc);
return ret;
}
/**
* drm_universal_plane_init - Initialize a new universal plane object
* @dev: DRM device
* @plane: plane object to init
* @possible_crtcs: bitmask of possible CRTCs
* @funcs: callbacks for the new plane
* @formats: array of supported formats (DRM_FORMAT\_\*)
* @format_count: number of elements in @formats
* @format_modifiers: array of struct drm_format modifiers terminated by
* DRM_FORMAT_MOD_INVALID
* @type: type of plane (overlay, primary, cursor)
* @name: printf style format string for the plane name, or NULL for default name
*
* Initializes a plane object of type @type.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
uint32_t possible_crtcs,
const struct drm_plane_funcs *funcs,
const uint32_t *formats, unsigned int format_count,
const uint64_t *format_modifiers,
enum drm_plane_type type,
const char *name, ...)
{
struct drm_mode_config *config = &dev->mode_config;
unsigned int format_modifier_count = 0;
int ret;
/* plane index is used with 32bit bitmasks */
if (WARN_ON(config->num_total_plane >= 32))
return -EINVAL;
WARN_ON(drm_drv_uses_atomic_modeset(dev) &&
(!funcs->atomic_destroy_state ||
!funcs->atomic_duplicate_state));
ret = drm_mode_object_add(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
if (ret)
return ret;
drm_modeset_lock_init(&plane->mutex);
plane->base.properties = &plane->properties;
plane->dev = dev;
plane->funcs = funcs;
plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
GFP_KERNEL);
if (!plane->format_types) {
DRM_DEBUG_KMS("out of memory when allocating plane\n");
drm_mode_object_unregister(dev, &plane->base);
return -ENOMEM;
}
/*
* First driver to need more than 64 formats needs to fix this. Each
* format is encoded as a bit and the current code only supports a u64.
*/
if (WARN_ON(format_count > 64))
return -EINVAL;
if (format_modifiers) {
const uint64_t *temp_modifiers = format_modifiers;
while (*temp_modifiers++ != DRM_FORMAT_MOD_INVALID)
format_modifier_count++;
}
plane->modifier_count = format_modifier_count;
plane->modifiers = kmalloc_array(format_modifier_count,
sizeof(format_modifiers[0]),
GFP_KERNEL);
if (format_modifier_count && !plane->modifiers) {
DRM_DEBUG_KMS("out of memory when allocating plane\n");
kfree(plane->format_types);
drm_mode_object_unregister(dev, &plane->base);
return -ENOMEM;
}
if (name) {
va_list ap;
va_start(ap, name);
plane->name = kvasprintf(GFP_KERNEL, name, ap);
va_end(ap);
} else {
plane->name = kasprintf(GFP_KERNEL, "plane-%d",
drm_num_planes(dev));
}
if (!plane->name) {
kfree(plane->format_types);
kfree(plane->modifiers);
drm_mode_object_unregister(dev, &plane->base);
return -ENOMEM;
}
memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
plane->format_count = format_count;
memcpy(plane->modifiers, format_modifiers,
format_modifier_count * sizeof(format_modifiers[0]));
plane->possible_crtcs = possible_crtcs;
plane->type = type;
list_add_tail(&plane->head, &config->plane_list);
plane->index = config->num_total_plane++;
drm_object_attach_property(&plane->base,
config->plane_type_property,
plane->type);
if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
drm_object_attach_property(&plane->base, config->prop_in_fence_fd, -1);
drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
drm_object_attach_property(&plane->base, config->prop_src_x, 0);
drm_object_attach_property(&plane->base, config->prop_src_y, 0);
drm_object_attach_property(&plane->base, config->prop_src_w, 0);
drm_object_attach_property(&plane->base, config->prop_src_h, 0);
}
if (config->allow_fb_modifiers)
create_in_format_blob(dev, plane);
return 0;
}
