linux/drivers/gpu/drm/omapdrm/omap_fb.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/dma-mapping.h>
#include <linux/seq_file.h>

#include <drm/drm_blend.h>
#include <drm/drm_modeset_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_framebuffer_helper.h>

#include "omap_dmm_tiler.h"
#include "omap_drv.h"

/*
 * framebuffer funcs
 */

static const u32 formats[] = …;

/* per-plane info for the fb: */
struct plane { … };

#define to_omap_framebuffer(x) …

struct omap_framebuffer { … };

static int omap_framebuffer_dirty(struct drm_framebuffer *fb,
				  struct drm_file *file_priv,
				  unsigned flags, unsigned color,
				  struct drm_clip_rect *clips,
				  unsigned num_clips)
{ … }

static const struct drm_framebuffer_funcs omap_framebuffer_funcs = …;

static u32 get_linear_addr(struct drm_framebuffer *fb,
		const struct drm_format_info *format, int n, int x, int y)
{ … }

bool omap_framebuffer_supports_rotation(struct drm_framebuffer *fb)
{ … }

/* Note: DRM rotates counter-clockwise, TILER & DSS rotates clockwise */
static u32 drm_rotation_to_tiler(unsigned int drm_rot)
{ … }

/* update ovl info for scanout, handles cases of multi-planar fb's, etc.
 */
void omap_framebuffer_update_scanout(struct drm_framebuffer *fb,
		struct drm_plane_state *state,
		struct omap_overlay_info *info,
		struct omap_overlay_info *r_info)
{ … }

/* pin, prepare for scanout: */
int omap_framebuffer_pin(struct drm_framebuffer *fb)
{ … }

/* unpin, no longer being scanned out: */
void omap_framebuffer_unpin(struct drm_framebuffer *fb)
{ … }

#ifdef CONFIG_DEBUG_FS
void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
{ … }
#endif

struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev,
		struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd)
{ … }

struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev,
		const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
{ … }