Orange Pi5 kernel

/*
 * Copyright (c) 2016 Intel Corporation
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting documentation, and
 * that the name of the copyright holders not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  The copyright holders make no representations
 * about the suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 */
 
#include <linux/uaccess.h>
 
#include <drm/drm_drv.h>
#include <drm/drm_encoder.h>
#include <drm/drm_file.h>
#include <drm/drm_managed.h>
#include <drm/drm_mode_config.h>
#include <drm/drm_print.h>
#include <linux/dma-resv.h>
 
#include "drm_crtc_internal.h"
#include "drm_internal.h"
 
int drm_modeset_register_all(struct drm_device *dev)
{
<------>int ret;
 
<------>ret = drm_plane_register_all(dev);
<------>if (ret)
<------><------>goto err_plane;
 
<------>ret = drm_crtc_register_all(dev);
<------>if  (ret)
<------><------>goto err_crtc;
 
<------>ret = drm_encoder_register_all(dev);
<------>if (ret)
<------><------>goto err_encoder;
 
<------>ret = drm_connector_register_all(dev);
<------>if (ret)
<------><------>goto err_connector;
 
<------>return 0;
 
err_connector:
<------>drm_encoder_unregister_all(dev);
err_encoder:
<------>drm_crtc_unregister_all(dev);
err_crtc:
<------>drm_plane_unregister_all(dev);
err_plane:
<------>return ret;
}
 
void drm_modeset_unregister_all(struct drm_device *dev)
{
<------>drm_connector_unregister_all(dev);
<------>drm_encoder_unregister_all(dev);
<------>drm_crtc_unregister_all(dev);
<------>drm_plane_unregister_all(dev);
}
 
/**
 * drm_mode_getresources - get graphics configuration
 * @dev: drm device for the ioctl
 * @data: data pointer for the ioctl
 * @file_priv: drm file for the ioctl call
 *
 * Construct a set of configuration description structures and return
 * them to the user, including CRTC, connector and framebuffer configuration.
 *
 * Called by the user via ioctl.
 *
 * Returns:
 * Zero on success, negative errno on failure.
 */
int drm_mode_getresources(struct drm_device *dev, void *data,
<------><------><------>  struct drm_file *file_priv)
{
<------>struct drm_mode_card_res *card_res = data;
<------>struct drm_framebuffer *fb;
<------>struct drm_connector *connector;
<------>struct drm_crtc *crtc;
<------>struct drm_encoder *encoder;
<------>int count, ret = 0;
<------>uint32_t __user *fb_id;
<------>uint32_t __user *crtc_id;
<------>uint32_t __user *connector_id;
<------>uint32_t __user *encoder_id;
<------>struct drm_connector_list_iter conn_iter;
 
<------>if (!drm_core_check_feature(dev, DRIVER_MODESET))
<------><------>return -EOPNOTSUPP;
 
<------>mutex_lock(&file_priv->fbs_lock);
<------>count = 0;
<------>fb_id = u64_to_user_ptr(card_res->fb_id_ptr);
<------>list_for_each_entry(fb, &file_priv->fbs, filp_head) {
<------><------>if (count < card_res->count_fbs &&
<------><------>    put_user(fb->base.id, fb_id + count)) {
<------><------><------>mutex_unlock(&file_priv->fbs_lock);
<------><------><------>return -EFAULT;
<------><------>}
<------><------>count++;
<------>}
<------>card_res->count_fbs = count;
<------>mutex_unlock(&file_priv->fbs_lock);
 
<------>card_res->max_height = dev->mode_config.max_height;
<------>card_res->min_height = dev->mode_config.min_height;
<------>card_res->max_width = dev->mode_config.max_width;
<------>card_res->min_width = dev->mode_config.min_width;
 
<------>count = 0;
<------>crtc_id = u64_to_user_ptr(card_res->crtc_id_ptr);
<------>drm_for_each_crtc(crtc, dev) {
<------><------>if (drm_lease_held(file_priv, crtc->base.id)) {
<------><------><------>if (count < card_res->count_crtcs &&
<------><------><------>    put_user(crtc->base.id, crtc_id + count))
<------><------><------><------>return -EFAULT;
<------><------><------>count++;
<------><------>}
<------>}
<------>card_res->count_crtcs = count;
 
<------>count = 0;
<------>encoder_id = u64_to_user_ptr(card_res->encoder_id_ptr);
<------>drm_for_each_encoder(encoder, dev) {
<------><------>if (count < card_res->count_encoders &&
<------><------>    put_user(encoder->base.id, encoder_id + count))
<------><------><------>return -EFAULT;
<------><------>count++;
<------>}
<------>card_res->count_encoders = count;
 
<------>drm_connector_list_iter_begin(dev, &conn_iter);
<------>count = 0;
<------>connector_id = u64_to_user_ptr(card_res->connector_id_ptr);
<------>drm_for_each_connector_iter(connector, &conn_iter) {
<------><------>/* only expose writeback connectors if userspace understands them */
<------><------>if (!file_priv->writeback_connectors &&
<------><------>    (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK))
<------><------><------>continue;
 
<------><------>if (drm_lease_held(file_priv, connector->base.id)) {
<------><------><------>if (count < card_res->count_connectors &&
<------><------><------>    put_user(connector->base.id, connector_id + count)) {
<------><------><------><------>drm_connector_list_iter_end(&conn_iter);
<------><------><------><------>return -EFAULT;
<------><------><------>}
<------><------><------>count++;
<------><------>}
<------>}
<------>card_res->count_connectors = count;
<------>drm_connector_list_iter_end(&conn_iter);
 
<------>return ret;
}
 
/**
 * drm_mode_config_reset - call ->reset callbacks
 * @dev: drm device
 *
 * This functions calls all the crtc's, encoder's and connector's ->reset
 * callback. Drivers can use this in e.g. their driver load or resume code to
 * reset hardware and software state.
 */
void drm_mode_config_reset(struct drm_device *dev)
{
<------>struct drm_crtc *crtc;
<------>struct drm_plane *plane;
<------>struct drm_encoder *encoder;
<------>struct drm_connector *connector;
<------>struct drm_connector_list_iter conn_iter;
 
<------>drm_for_each_plane(plane, dev)
<------><------>if (plane->funcs->reset)
<------><------><------>plane->funcs->reset(plane);
 
<------>drm_for_each_crtc(crtc, dev)
<------><------>if (crtc->funcs->reset)
<------><------><------>crtc->funcs->reset(crtc);
 
<------>drm_for_each_encoder(encoder, dev)
<------><------>if (encoder->funcs->reset)
<------><------><------>encoder->funcs->reset(encoder);
 
<------>drm_connector_list_iter_begin(dev, &conn_iter);
<------>drm_for_each_connector_iter(connector, &conn_iter)
<------><------>if (connector->funcs->reset)
<------><------><------>connector->funcs->reset(connector);
<------>drm_connector_list_iter_end(&conn_iter);
}
EXPORT_SYMBOL(drm_mode_config_reset);
 
/*
 * Global properties
 */
static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
<------>{ DRM_PLANE_TYPE_OVERLAY, "Overlay" },
<------>{ DRM_PLANE_TYPE_PRIMARY, "Primary" },
<------>{ DRM_PLANE_TYPE_CURSOR, "Cursor" },
};
 
static int drm_mode_create_standard_properties(struct drm_device *dev)
{
<------>struct drm_property *prop;
<------>int ret;
 
<------>ret = drm_connector_create_standard_properties(dev);
<------>if (ret)
<------><------>return ret;
 
<------>prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
<------><------><------><------><------>"type", drm_plane_type_enum_list,
<------><------><------><------><------>ARRAY_SIZE(drm_plane_type_enum_list));
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.plane_type_property = prop;
 
<------>prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"SRC_X", 0, UINT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_src_x = prop;
 
<------>prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"SRC_Y", 0, UINT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_src_y = prop;
 
<------>prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"SRC_W", 0, UINT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_src_w = prop;
 
<------>prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"SRC_H", 0, UINT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_src_h = prop;
 
<------>prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"CRTC_X", INT_MIN, INT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_crtc_x = prop;
 
<------>prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"CRTC_Y", INT_MIN, INT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_crtc_y = prop;
 
<------>prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"CRTC_W", 0, INT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_crtc_w = prop;
 
<------>prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"CRTC_H", 0, INT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_crtc_h = prop;
 
<------>prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"FB_ID", DRM_MODE_OBJECT_FB);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_fb_id = prop;
 
<------>prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"IN_FENCE_FD", -1, INT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_in_fence_fd = prop;
 
<------>prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"OUT_FENCE_PTR", 0, U64_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_out_fence_ptr = prop;
 
<------>prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"CRTC_ID", DRM_MODE_OBJECT_CRTC);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_crtc_id = prop;
 
<------>prop = drm_property_create(dev,
<------><------><------>DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
<------><------><------>"FB_DAMAGE_CLIPS", 0);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_fb_damage_clips = prop;
 
<------>prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
<------><------><------>"ACTIVE");
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_active = prop;
 
<------>prop = drm_property_create(dev,
<------><------><------>DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
<------><------><------>"MODE_ID", 0);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_mode_id = prop;
 
<------>prop = drm_property_create_bool(dev, 0,
<------><------><------>"VRR_ENABLED");
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.prop_vrr_enabled = prop;
 
<------>prop = drm_property_create(dev,
<------><------><------>DRM_MODE_PROP_BLOB,
<------><------><------>"DEGAMMA_LUT", 0);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.degamma_lut_property = prop;
 
<------>prop = drm_property_create_range(dev,
<------><------><------>DRM_MODE_PROP_IMMUTABLE,
<------><------><------>"DEGAMMA_LUT_SIZE", 0, UINT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.degamma_lut_size_property = prop;
 
<------>prop = drm_property_create(dev,
<------><------><------>DRM_MODE_PROP_BLOB,
<------><------><------>"CTM", 0);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.ctm_property = prop;
 
<------>prop = drm_property_create(dev,
<------><------><------>DRM_MODE_PROP_BLOB,
<------><------><------>"GAMMA_LUT", 0);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.gamma_lut_property = prop;
 
<------>prop = drm_property_create_range(dev,
<------><------><------>DRM_MODE_PROP_IMMUTABLE,
<------><------><------>"GAMMA_LUT_SIZE", 0, UINT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.gamma_lut_size_property = prop;
 
#if defined(CONFIG_ROCKCHIP_DRM_CUBIC_LUT)
<------>prop = drm_property_create(dev,
<------><------><------>DRM_MODE_PROP_BLOB,
<------><------><------>"CUBIC_LUT", 0);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.cubic_lut_property = prop;
 
<------>prop = drm_property_create_range(dev,
<------><------><------>DRM_MODE_PROP_IMMUTABLE,
<------><------><------>"CUBIC_LUT_SIZE", 0, UINT_MAX);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.cubic_lut_size_property = prop;
#endif
 
<------>prop = drm_property_create(dev,
<------><------><------><------>   DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_BLOB,
<------><------><------><------>   "IN_FORMATS", 0);
<------>if (!prop)
<------><------>return -ENOMEM;
<------>dev->mode_config.modifiers_property = prop;
 
<------>return 0;
}
 
static void drm_mode_config_init_release(struct drm_device *dev, void *ptr)
{
<------>drm_mode_config_cleanup(dev);
}
 
/**
 * drmm_mode_config_init - managed DRM mode_configuration structure
 * 	initialization
 * @dev: DRM device
 *
 * Initialize @dev's mode_config structure, used for tracking the graphics
 * configuration of @dev.
 *
 * Since this initializes the modeset locks, no locking is possible. Which is no
 * problem, since this should happen single threaded at init time. It is the
 * driver's problem to ensure this guarantee.
 *
 * Cleanup is automatically handled through registering drm_mode_config_cleanup
 * with drmm_add_action().
 *
 * Returns: 0 on success, negative error value on failure.
 */
int drmm_mode_config_init(struct drm_device *dev)
{
<------>mutex_init(&dev->mode_config.mutex);
<------>drm_modeset_lock_init(&dev->mode_config.connection_mutex);
<------>mutex_init(&dev->mode_config.idr_mutex);
<------>mutex_init(&dev->mode_config.fb_lock);
<------>mutex_init(&dev->mode_config.blob_lock);
<------>INIT_LIST_HEAD(&dev->mode_config.fb_list);
<------>INIT_LIST_HEAD(&dev->mode_config.crtc_list);
<------>INIT_LIST_HEAD(&dev->mode_config.connector_list);
<------>INIT_LIST_HEAD(&dev->mode_config.encoder_list);
<------>INIT_LIST_HEAD(&dev->mode_config.property_list);
<------>INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
<------>INIT_LIST_HEAD(&dev->mode_config.plane_list);
<------>INIT_LIST_HEAD(&dev->mode_config.privobj_list);
<------>idr_init(&dev->mode_config.object_idr);
<------>idr_init(&dev->mode_config.tile_idr);
<------>ida_init(&dev->mode_config.connector_ida);
<------>spin_lock_init(&dev->mode_config.connector_list_lock);
 
<------>init_llist_head(&dev->mode_config.connector_free_list);
<------>INIT_WORK(&dev->mode_config.connector_free_work, drm_connector_free_work_fn);
 
<------>drm_mode_create_standard_properties(dev);
 
<------>/* Just to be sure */
<------>dev->mode_config.num_fb = 0;
<------>dev->mode_config.num_connector = 0;
<------>dev->mode_config.num_crtc = 0;
<------>dev->mode_config.num_encoder = 0;
<------>dev->mode_config.num_total_plane = 0;
 
<------>if (IS_ENABLED(CONFIG_LOCKDEP)) {
<------><------>struct drm_modeset_acquire_ctx modeset_ctx;
<------><------>struct ww_acquire_ctx resv_ctx;
<------><------>struct dma_resv resv;
<------><------>int ret;
 
<------><------>dma_resv_init(&resv);
 
<------><------>drm_modeset_acquire_init(&modeset_ctx, 0);
<------><------>ret = drm_modeset_lock(&dev->mode_config.connection_mutex,
<------><------><------><------>       &modeset_ctx);
<------><------>if (ret == -EDEADLK)
<------><------><------>ret = drm_modeset_backoff(&modeset_ctx);
 
<------><------>ww_acquire_init(&resv_ctx, &reservation_ww_class);
<------><------>ret = dma_resv_lock(&resv, &resv_ctx);
<------><------>if (ret == -EDEADLK)
<------><------><------>dma_resv_lock_slow(&resv, &resv_ctx);
 
<------><------>dma_resv_unlock(&resv);
<------><------>ww_acquire_fini(&resv_ctx);
 
<------><------>drm_modeset_drop_locks(&modeset_ctx);
<------><------>drm_modeset_acquire_fini(&modeset_ctx);
<------><------>dma_resv_fini(&resv);
<------>}
 
<------>return drmm_add_action_or_reset(dev, drm_mode_config_init_release,
<------><------><------><------><------>NULL);
}
EXPORT_SYMBOL(drmm_mode_config_init);
 
/**
 * drm_mode_config_cleanup - free up DRM mode_config info
 * @dev: DRM device
 *
 * Free up all the connectors and CRTCs associated with this DRM device, then
 * free up the framebuffers and associated buffer objects.
 *
 * Note that since this /should/ happen single-threaded at driver/device
 * teardown time, no locking is required. It's the driver's job to ensure that
 * this guarantee actually holds true.
 *
 * FIXME: With the managed drmm_mode_config_init() it is no longer necessary for
 * drivers to explicitly call this function.
 */
void drm_mode_config_cleanup(struct drm_device *dev)
{
<------>struct drm_connector *connector;
<------>struct drm_connector_list_iter conn_iter;
<------>struct drm_crtc *crtc, *ct;
<------>struct drm_encoder *encoder, *enct;
<------>struct drm_framebuffer *fb, *fbt;
<------>struct drm_property *property, *pt;
<------>struct drm_property_blob *blob, *bt;
<------>struct drm_plane *plane, *plt;
 
<------>list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
<------><------><------><------> head) {
<------><------>encoder->funcs->destroy(encoder);
<------>}
 
<------>drm_connector_list_iter_begin(dev, &conn_iter);
<------>drm_for_each_connector_iter(connector, &conn_iter) {
<------><------>/* drm_connector_list_iter holds an full reference to the
<------><------> * current connector itself, which means it is inherently safe
<------><------> * against unreferencing the current connector - but not against
<------><------> * deleting it right away. */
<------><------>drm_connector_put(connector);
<------>}
<------>drm_connector_list_iter_end(&conn_iter);
<------>/* connector_iter drops references in a work item. */
<------>flush_work(&dev->mode_config.connector_free_work);
<------>if (WARN_ON(!list_empty(&dev->mode_config.connector_list))) {
<------><------>drm_connector_list_iter_begin(dev, &conn_iter);
<------><------>drm_for_each_connector_iter(connector, &conn_iter)
<------><------><------>DRM_ERROR("connector %s leaked!\n", connector->name);
<------><------>drm_connector_list_iter_end(&conn_iter);
<------>}
 
<------>list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
<------><------><------><------> head) {
<------><------>drm_property_destroy(dev, property);
<------>}
 
<------>list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
<------><------><------><------> head) {
<------><------>plane->funcs->destroy(plane);
<------>}
 
<------>list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
<------><------>crtc->funcs->destroy(crtc);
<------>}
 
<------>list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
<------><------><------><------> head_global) {
<------><------>drm_property_blob_put(blob);
<------>}
 
<------>/*
<------> * Single-threaded teardown context, so it's not required to grab the
<------> * fb_lock to protect against concurrent fb_list access. Contrary, it
<------> * would actually deadlock with the drm_framebuffer_cleanup function.
<------> *
<------> * Also, if there are any framebuffers left, that's a driver leak now,
<------> * so politely WARN about this.
<------> */
<------>WARN_ON(!list_empty(&dev->mode_config.fb_list));
<------>list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
<------><------>struct drm_printer p = drm_debug_printer("[leaked fb]");
 
<------><------>drm_printf(&p, "framebuffer[%u]:\n", fb->base.id);
<------><------>drm_framebuffer_print_info(&p, 1, fb);
<------><------>drm_framebuffer_free(&fb->base.refcount);
<------>}
 
<------>ida_destroy(&dev->mode_config.connector_ida);
<------>idr_destroy(&dev->mode_config.tile_idr);
<------>idr_destroy(&dev->mode_config.object_idr);
<------>drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
}
EXPORT_SYMBOL(drm_mode_config_cleanup);
 
static u32 full_encoder_mask(struct drm_device *dev)
{
<------>struct drm_encoder *encoder;
<------>u32 encoder_mask = 0;
 
<------>drm_for_each_encoder(encoder, dev)
<------><------>encoder_mask |= drm_encoder_mask(encoder);
 
<------>return encoder_mask;
}
 
/*
 * For some reason we want the encoder itself included in
 * possible_clones. Make life easy for drivers by allowing them
 * to leave possible_clones unset if no cloning is possible.
 */
static void fixup_encoder_possible_clones(struct drm_encoder *encoder)
{
<------>if (encoder->possible_clones == 0)
<------><------>encoder->possible_clones = drm_encoder_mask(encoder);
}
 
static void validate_encoder_possible_clones(struct drm_encoder *encoder)
{
<------>struct drm_device *dev = encoder->dev;
<------>u32 encoder_mask = full_encoder_mask(dev);
<------>struct drm_encoder *other;
 
<------>drm_for_each_encoder(other, dev) {
<------><------>WARN(!!(encoder->possible_clones & drm_encoder_mask(other)) !=
<------><------>     !!(other->possible_clones & drm_encoder_mask(encoder)),
<------><------>     "possible_clones mismatch: "
<------><------>     "[ENCODER:%d:%s] mask=0x%x possible_clones=0x%x vs. "
<------><------>     "[ENCODER:%d:%s] mask=0x%x possible_clones=0x%x\n",
<------><------>     encoder->base.id, encoder->name,
<------><------>     drm_encoder_mask(encoder), encoder->possible_clones,
<------><------>     other->base.id, other->name,
<------><------>     drm_encoder_mask(other), other->possible_clones);
<------>}
 
<------>WARN((encoder->possible_clones & drm_encoder_mask(encoder)) == 0 ||
<------>     (encoder->possible_clones & ~encoder_mask) != 0,
<------>     "Bogus possible_clones: "
<------>     "[ENCODER:%d:%s] possible_clones=0x%x (full encoder mask=0x%x)\n",
<------>     encoder->base.id, encoder->name,
<------>     encoder->possible_clones, encoder_mask);
}
 
static u32 full_crtc_mask(struct drm_device *dev)
{
<------>struct drm_crtc *crtc;
<------>u32 crtc_mask = 0;
 
<------>drm_for_each_crtc(crtc, dev)
<------><------>crtc_mask |= drm_crtc_mask(crtc);
 
<------>return crtc_mask;
}
 
static void validate_encoder_possible_crtcs(struct drm_encoder *encoder)
{
<------>u32 crtc_mask = full_crtc_mask(encoder->dev);
 
<------>WARN((encoder->possible_crtcs & crtc_mask) == 0 ||
<------>     (encoder->possible_crtcs & ~crtc_mask) != 0,
<------>     "Bogus possible_crtcs: "
<------>     "[ENCODER:%d:%s] possible_crtcs=0x%x (full crtc mask=0x%x)\n",
<------>     encoder->base.id, encoder->name,
<------>     encoder->possible_crtcs, crtc_mask);
}
 
void drm_mode_config_validate(struct drm_device *dev)
{
<------>struct drm_encoder *encoder;
 
<------>if (!drm_core_check_feature(dev, DRIVER_MODESET))
<------><------>return;
 
<------>drm_for_each_encoder(encoder, dev)
<------><------>fixup_encoder_possible_clones(encoder);
 
<------>drm_for_each_encoder(encoder, dev) {
<------><------>validate_encoder_possible_clones(encoder);
<------><------>validate_encoder_possible_crtcs(encoder);
<------>}
}