linux/drivers/gpu/drm/omapdrm/omap_fbdev.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
 * Author: Rob Clark <[email protected]>
 */

#include <linux/fb.h>

#include <drm/drm_drv.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_file.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_util.h>

#include "omap_drv.h"
#include "omap_fbdev.h"

MODULE_PARM_DESC(…) …;
static bool ywrap_enabled = …;
module_param_named(ywrap, ywrap_enabled, bool, 0644);

/*
 * fbdev funcs, to implement legacy fbdev interface on top of drm driver
 */

#define to_omap_fbdev(x) …

struct omap_fbdev { … };

static struct drm_fb_helper *get_fb(struct fb_info *fbi);

static void pan_worker(struct work_struct *work)
{ … }

FB_GEN_DEFAULT_DEFERRED_DMAMEM_OPS(omap_fbdev,
				   drm_fb_helper_damage_range,
				   drm_fb_helper_damage_area)

static int omap_fbdev_pan_display(struct fb_var_screeninfo *var,
		struct fb_info *fbi)
{ … }

static int omap_fbdev_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{ … }

static void omap_fbdev_fb_destroy(struct fb_info *info)
{ … }

/*
 * For now, we cannot use FB_DEFAULT_DEFERRED_OPS and fb_deferred_io_mmap()
 * because we use write-combine.
 */
static const struct fb_ops omap_fb_ops = …;

static int omap_fbdev_create(struct drm_fb_helper *helper,
		struct drm_fb_helper_surface_size *sizes)
{ … }

static int omap_fbdev_dirty(struct drm_fb_helper *helper, struct drm_clip_rect *clip)
{ … }

static const struct drm_fb_helper_funcs omap_fb_helper_funcs = …;

static struct drm_fb_helper *get_fb(struct fb_info *fbi)
{ … }

/*
 * struct drm_client
 */

static void omap_fbdev_client_unregister(struct drm_client_dev *client)
{ … }

static int omap_fbdev_client_restore(struct drm_client_dev *client)
{ … }

static int omap_fbdev_client_hotplug(struct drm_client_dev *client)
{ … }

static const struct drm_client_funcs omap_fbdev_client_funcs = …;

void omap_fbdev_setup(struct drm_device *dev)
{ … }