// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2012 Avionic Design GmbH
* Copyright (C) 2012-2016 NVIDIA CORPORATION. All rights reserved.
*/
#include <linux/bitops.h>
#include <linux/host1x.h>
#include <linux/idr.h>
#include <linux/iommu.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_debugfs.h>
#include <drm/drm_drv.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_prime.h>
#include <drm/drm_vblank.h>
#include "drm.h"
#include "gem.h"
#define DRIVER_NAME "tegra"
#define DRIVER_DESC "NVIDIA Tegra graphics"
#define DRIVER_DATE "20120330"
#define DRIVER_MAJOR 0
#define DRIVER_MINOR 0
#define DRIVER_PATCHLEVEL 0
#define CARVEOUT_SZ SZ_64M
#define CDMA_GATHER_FETCHES_MAX_NB 16383
struct tegra_drm_file {
struct idr contexts;
struct mutex lock;
};
static int tegra_atomic_check(struct drm_device *drm,
struct drm_atomic_state *state)
{
int err;
err = drm_atomic_helper_check(drm, state);
if (err < 0)
return err;
return tegra_display_hub_atomic_check(drm, state);
}
static const struct drm_mode_config_funcs tegra_drm_mode_config_funcs = {
.fb_create = tegra_fb_create,
#ifdef CONFIG_DRM_FBDEV_EMULATION
.output_poll_changed = drm_fb_helper_output_poll_changed,
#endif
.atomic_check = tegra_atomic_check,
.atomic_commit = drm_atomic_helper_commit,
};
static void tegra_atomic_commit_tail(struct drm_atomic_state *old_state)
{
struct drm_device *drm = old_state->dev;
struct tegra_drm *tegra = drm->dev_private;
if (tegra->hub) {
drm_atomic_helper_commit_modeset_disables(drm, old_state);
tegra_display_hub_atomic_commit(drm, old_state);
drm_atomic_helper_commit_planes(drm, old_state, 0);
drm_atomic_helper_commit_modeset_enables(drm, old_state);
drm_atomic_helper_commit_hw_done(old_state);
drm_atomic_helper_wait_for_vblanks(drm, old_state);
drm_atomic_helper_cleanup_planes(drm, old_state);
} else {
drm_atomic_helper_commit_tail_rpm(old_state);
}
}
static 