* reference counted modeset objects like framebuffers.
*
* Returns:
- * New unique (relative to other objects in @dev) integer identifier for the
- * object.
+ * Zero on success, error code on failure.
*/
int drm_mode_object_get(struct drm_device *dev,
struct drm_mode_object *obj, uint32_t obj_type)
out:
mutex_unlock(&dev->mode_config.fb_lock);
- return 0;
+ return ret;
}
EXPORT_SYMBOL(drm_framebuffer_init);
*/
void drm_framebuffer_unregister_private(struct drm_framebuffer *fb)
{
- struct drm_device *dev = fb->dev;
+ struct drm_device *dev;
+
+ if (!fb)
+ return;
+
+ dev = fb->dev;
mutex_lock(&dev->mode_config.fb_lock);
/* Mark fb as reaped and drop idr ref. */
*/
void drm_framebuffer_remove(struct drm_framebuffer *fb)
{
- struct drm_device *dev = fb->dev;
+ struct drm_device *dev;
struct drm_crtc *crtc;
struct drm_plane *plane;
struct drm_mode_set set;
int ret;
+ if (!fb)
+ return;
+
+ dev = fb->dev;
+
WARN_ON(!list_empty(&fb->filp_head));
/*
* @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.
*
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 struct drm_crtc_funcs *funcs,
+ const char *name, ...)
{
struct drm_mode_config *config = &dev->mode_config;
int ret;
crtc->dev = dev;
crtc->funcs = funcs;
- crtc->invert_dimensions = false;
drm_modeset_lock_init(&crtc->mutex);
ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
* @encoder: the encoder to init
* @funcs: callbacks for this encoder
* @encoder_type: user visible type of the encoder
+ * @name: printf style format string for the encoder name, or NULL for default name
*
* Initialises a preallocated encoder. Encoder should be
* subclassed as part of driver encoder objects.
int drm_encoder_init(struct drm_device *dev,
struct drm_encoder *encoder,
const struct drm_encoder_funcs *funcs,
- int encoder_type)
+ int encoder_type, const char *name, ...)
{
int ret;
* @formats: array of supported formats (%DRM_FORMAT_*)
* @format_count: number of elements in @formats
* @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.
*
unsigned long possible_crtcs,
const struct drm_plane_funcs *funcs,
const uint32_t *formats, unsigned int format_count,
- enum drm_plane_type type)
+ enum drm_plane_type type,
+ const char *name, ...)
{
struct drm_mode_config *config = &dev->mode_config;
int ret;
type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
- formats, format_count, type);
+ formats, format_count, type, NULL);
}
EXPORT_SYMBOL(drm_plane_init);
+/**
+ * drm_share_plane_init - Initialize a share plane
+ * @dev: DRM device
+ * @plane: plane object to init
+ * @parent: this plane share some resources with parent plane.
+ * @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
+ * @type: type of plane (overlay, primary, cursor)
+ *
+ * With this API, the plane can share hardware resources with other planes.
+ *
+ * --------------------------------------------------
+ * | scanout |
+ * | ------------------ |
+ * | | parent plane | |
+ * | | active scanout | |
+ * | | | ----------------- |
+ * | ------------------ | share plane 1 | |
+ * | ----------------- |active scanout | |
+ * | | share plane 0 | | | |
+ * | |active scanout | ----------------- |
+ * | | | |
+ * | ----------------- |
+ * --------------------------------------------------
+ *
+ * parent plane
+ * |---share plane 0
+ * |---share plane 1
+ * ...
+ *
+ * The plane hardware is used when the display scanout run into plane active
+ * scanout, that means we can reuse the plane hardware resources on plane
+ * non-active scanout.
+ *
+ * Because resource share, There are some limit on share plane: one group
+ * of share planes need use same zpos, can't not overlap, etc.
+ *
+ * Here assume share plane is a universal plane with some limit flags.
+ * people who use the share plane need know the limit, should call the ioctl
+ * DRM_CLIENT_CAP_SHARE_PLANES, and judge the planes limit before use it.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+
+int drm_share_plane_init(struct drm_device *dev, struct drm_plane *plane,
+ struct drm_plane *parent,
+ unsigned long possible_crtcs,
+ const struct drm_plane_funcs *funcs,
+ const uint32_t *formats, unsigned int format_count,
+ enum drm_plane_type type)
+{
+ struct drm_mode_config *config = &dev->mode_config;
+ int ret;
+ int share_id;
+
+ /*
+ * TODO: only verified on ATOMIC drm driver.
+ */
+ if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
+ return -EINVAL;
+
+ ret = drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
+ formats, format_count, type, NULL);
+ if (ret)
+ return ret;
+
+ if (parent) {
+ /*
+ * Can't support more than two level plane share.
+ */
+ WARN_ON(parent->parent);
+ share_id = parent->base.id;
+ plane->parent = parent;
+
+ config->num_share_plane++;
+ if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+ config->num_share_overlay_plane++;
+ } else {
+ share_id = plane->base.id;
+ }
+
+ drm_object_attach_property(&plane->base,
+ config->prop_share_id, share_id);
+ return 0;
+}
+EXPORT_SYMBOL(drm_share_plane_init);
+
/**
* drm_plane_cleanup - Clean up the core plane usage
* @plane: plane to cleanup
dev->mode_config.num_total_plane--;
if (plane->type == DRM_PLANE_TYPE_OVERLAY)
dev->mode_config.num_overlay_plane--;
+ if (plane->parent) {
+ dev->mode_config.num_share_plane--;
+ if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+ dev->mode_config.num_share_overlay_plane--;
+ }
drm_modeset_unlock_all(dev);
WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
return -ENOMEM;
dev->mode_config.plane_type_property = prop;
+ prop = drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE,
+ "SHARE_ID", 0, UINT_MAX);
+ if (!prop)
+ return -ENOMEM;
+
+ dev->mode_config.prop_share_id = prop;
+ prop = drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE,
+ "SHARE_FLAGS", 0, UINT_MAX);
+ if (!prop)
+ return -ENOMEM;
+ dev->mode_config.prop_share_flags = prop;
+
prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
"SRC_X", 0, UINT_MAX);
if (!prop)
*/
int drm_mode_create_tv_properties(struct drm_device *dev,
unsigned int num_modes,
- char *modes[])
+ const char * const modes[])
{
struct drm_property *tv_selector;
struct drm_property *tv_subconnector;
"select subconnector",
drm_tv_select_enum_list,
ARRAY_SIZE(drm_tv_select_enum_list));
+ if (!tv_selector)
+ goto nomem;
+
dev->mode_config.tv_select_subconnector_property = tv_selector;
tv_subconnector =
"subconnector",
drm_tv_subconnector_enum_list,
ARRAY_SIZE(drm_tv_subconnector_enum_list));
+ if (!tv_subconnector)
+ goto nomem;
dev->mode_config.tv_subconnector_property = tv_subconnector;
/*
*/
dev->mode_config.tv_left_margin_property =
drm_property_create_range(dev, 0, "left margin", 0, 100);
+ if (!dev->mode_config.tv_left_margin_property)
+ goto nomem;
dev->mode_config.tv_right_margin_property =
drm_property_create_range(dev, 0, "right margin", 0, 100);
+ if (!dev->mode_config.tv_right_margin_property)
+ goto nomem;
dev->mode_config.tv_top_margin_property =
drm_property_create_range(dev, 0, "top margin", 0, 100);
+ if (!dev->mode_config.tv_top_margin_property)
+ goto nomem;
dev->mode_config.tv_bottom_margin_property =
drm_property_create_range(dev, 0, "bottom margin", 0, 100);
+ if (!dev->mode_config.tv_bottom_margin_property)
+ goto nomem;
dev->mode_config.tv_mode_property =
drm_property_create(dev, DRM_MODE_PROP_ENUM,
"mode", num_modes);
+ if (!dev->mode_config.tv_mode_property)
+ goto nomem;
+
for (i = 0; i < num_modes; i++)
drm_property_add_enum(dev->mode_config.tv_mode_property, i,
i, modes[i]);
dev->mode_config.tv_brightness_property =
drm_property_create_range(dev, 0, "brightness", 0, 100);
+ if (!dev->mode_config.tv_brightness_property)
+ goto nomem;
dev->mode_config.tv_contrast_property =
drm_property_create_range(dev, 0, "contrast", 0, 100);
+ if (!dev->mode_config.tv_contrast_property)
+ goto nomem;
dev->mode_config.tv_flicker_reduction_property =
drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
+ if (!dev->mode_config.tv_flicker_reduction_property)
+ goto nomem;
dev->mode_config.tv_overscan_property =
drm_property_create_range(dev, 0, "overscan", 0, 100);
+ if (!dev->mode_config.tv_overscan_property)
+ goto nomem;
dev->mode_config.tv_saturation_property =
drm_property_create_range(dev, 0, "saturation", 0, 100);
+ if (!dev->mode_config.tv_saturation_property)
+ goto nomem;
dev->mode_config.tv_hue_property =
drm_property_create_range(dev, 0, "hue", 0, 100);
+ if (!dev->mode_config.tv_hue_property)
+ goto nomem;
return 0;
+nomem:
+ return -ENOMEM;
}
EXPORT_SYMBOL(drm_mode_create_tv_properties);
num_planes = config->num_total_plane;
else
num_planes = config->num_overlay_plane;
+ if (!file_priv->share_planes) {
+ if (file_priv->universal_planes)
+ num_planes -= config->num_share_plane;
+ else
+ num_planes -= config->num_share_overlay_plane;
+ }
/*
* This ioctl is called twice, once to determine how much space is
if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
!file_priv->universal_planes)
continue;
+ if (plane->parent && !file_priv->share_planes)
+ continue;
if (put_user(plane->base.id, plane_ptr + copied))
return -EFAULT;
return -EINVAL;
}
+static int check_src_coords(uint32_t src_x, uint32_t src_y,
+ uint32_t src_w, uint32_t src_h,
+ const struct drm_framebuffer *fb)
+{
+ unsigned int fb_width, fb_height;
+
+ fb_width = fb->width << 16;
+ fb_height = fb->height << 16;
+
+ /* Make sure source coordinates are inside the fb. */
+ if (src_w > fb_width ||
+ src_x > fb_width - src_w ||
+ src_h > fb_height ||
+ src_y > fb_height - src_h) {
+ DRM_DEBUG_KMS("Invalid source coordinates "
+ "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
+ src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
+ src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
+ src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
+ src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
+ return -ENOSPC;
+ }
+
+ return 0;
+}
+
/*
* setplane_internal - setplane handler for internal callers
*
uint32_t src_w, uint32_t src_h)
{
int ret = 0;
- unsigned int fb_width, fb_height;
/* No fb means shut it down */
if (!fb) {
crtc_y > INT_MAX - (int32_t) crtc_h) {
DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
crtc_w, crtc_h, crtc_x, crtc_y);
- return -ERANGE;
+ ret = -ERANGE;
+ goto out;
}
-
- fb_width = fb->width << 16;
- fb_height = fb->height << 16;
-
- /* Make sure source coordinates are inside the fb. */
- if (src_w > fb_width ||
- src_x > fb_width - src_w ||
- src_h > fb_height ||
- src_y > fb_height - src_h) {
- DRM_DEBUG_KMS("Invalid source coordinates "
- "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n",
- src_w >> 16, ((src_w & 0xffff) * 15625) >> 10,
- src_h >> 16, ((src_h & 0xffff) * 15625) >> 10,
- src_x >> 16, ((src_x & 0xffff) * 15625) >> 10,
- src_y >> 16, ((src_y & 0xffff) * 15625) >> 10);
- ret = -ENOSPC;
+ ret = check_src_coords(src_x, src_y, src_w, src_h, fb);
+ if (ret)
goto out;
- }
plane->old_fb = plane->fb;
ret = plane->funcs->update_plane(plane, crtc, fb,
drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
- if (crtc->invert_dimensions)
+ if (crtc->state &&
+ crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
+ BIT(DRM_ROTATE_270)))
swap(hdisplay, vdisplay);
- if (hdisplay > fb->width ||
- vdisplay > fb->height ||
- x > fb->width - hdisplay ||
- y > fb->height - vdisplay) {
- DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n",
- fb->width, fb->height, hdisplay, vdisplay, x, y,
- crtc->invert_dimensions ? " (inverted)" : "");
- return -ENOSPC;
- }
-
- return 0;
+ return check_src_coords(x << 16, y << 16,
+ hdisplay << 16, vdisplay << 16, fb);
}
EXPORT_SYMBOL(drm_crtc_check_viewport);
return 0;
}
+struct drm_mode_rmfb_work {
+ struct work_struct work;
+ struct list_head fbs;
+};
+
+static void drm_mode_rmfb_work_fn(struct work_struct *w)
+{
+ struct drm_mode_rmfb_work *arg = container_of(w, typeof(*arg), work);
+
+ while (!list_empty(&arg->fbs)) {
+ struct drm_framebuffer *fb =
+ list_first_entry(&arg->fbs, typeof(*fb), filp_head);
+
+ list_del_init(&fb->filp_head);
+ drm_framebuffer_remove(fb);
+ }
+}
+
/**
* drm_mode_rmfb - remove an FB from the configuration
* @dev: drm device for the ioctl
if (!found)
goto fail_lookup;
- /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
- __drm_framebuffer_unregister(dev, fb);
-
list_del_init(&fb->filp_head);
mutex_unlock(&dev->mode_config.fb_lock);
mutex_unlock(&file_priv->fbs_lock);
- drm_framebuffer_remove(fb);
+ /*
+ * we now own the reference that was stored in the fbs list
+ *
+ * drm_framebuffer_remove may fail with -EINTR on pending signals,
+ * so run this in a separate stack as there's no way to correctly
+ * handle this after the fb is already removed from the lookup table.
+ */
+ if (atomic_read(&fb->refcount.refcount) > 1) {
+ struct drm_mode_rmfb_work arg;
+
+ INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
+ INIT_LIST_HEAD(&arg.fbs);
+ list_add_tail(&fb->filp_head, &arg.fbs);
+
+ schedule_work(&arg.work);
+ flush_work(&arg.work);
+ destroy_work_on_stack(&arg.work);
+ } else
+ drm_framebuffer_unreference(fb);
return 0;
return ret;
}
-
/**
* drm_fb_release - remove and free the FBs on this file
* @priv: drm file for the ioctl
*/
void drm_fb_release(struct drm_file *priv)
{
- struct drm_device *dev = priv->minor->dev;
struct drm_framebuffer *fb, *tfb;
+ struct drm_mode_rmfb_work arg;
+
+ INIT_LIST_HEAD(&arg.fbs);
/*
* When the file gets released that means no one else can access the fb
* at it any more.
*/
list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
+ if (atomic_read(&fb->refcount.refcount) > 1) {
+ list_move_tail(&fb->filp_head, &arg.fbs);
+ } else {
+ list_del_init(&fb->filp_head);
- mutex_lock(&dev->mode_config.fb_lock);
- /* Mark fb as reaped, we still have a ref from fpriv->fbs. */
- __drm_framebuffer_unregister(dev, fb);
- mutex_unlock(&dev->mode_config.fb_lock);
+ /* This drops the fpriv->fbs reference. */
+ drm_framebuffer_unreference(fb);
+ }
+ }
- list_del_init(&fb->filp_head);
+ if (!list_empty(&arg.fbs)) {
+ INIT_WORK_ONSTACK(&arg.work, drm_mode_rmfb_work_fn);
- /* This will also drop the fpriv->fbs reference. */
- drm_framebuffer_remove(fb);
+ schedule_work(&arg.work);
+ flush_work(&arg.work);
+ destroy_work_on_stack(&arg.work);
}
}
goto out;
}
- ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
+ if (crtc->state) {
+ const struct drm_plane_state *state = crtc->primary->state;
+
+ ret = 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 (rotation & ~supported_rotations) {
rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y);
- rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4);
+ rotation = (rotation & DRM_REFLECT_MASK) |
+ BIT((ffs(rotation & DRM_ROTATE_MASK) + 1) % 4);
}
return rotation;
*/
WARN_ON(!list_empty(&dev->mode_config.fb_list));
list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
- drm_framebuffer_remove(fb);
+ drm_framebuffer_free(&fb->refcount);
}
list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
projects / firefly-linux-kernel-4.4.55.git / blobdiff