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/*
* Copyright (C) 2016 Noralf Trønnes
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __LINUX_TINYDRM_H
#define __LINUX_TINYDRM_H
#include <linux/mutex.h>
#include <drm/drm_simple_kms_helper.h>
struct drm_clip_rect;
struct drm_driver;
struct drm_file;
struct drm_framebuffer;
struct drm_framebuffer_funcs;
/**
* struct tinydrm_device - tinydrm device
*/
struct tinydrm_device {
/**
* @drm: DRM device
*/
struct drm_device *drm;
/**
* @pipe: Display pipe structure
*/
struct drm_simple_display_pipe pipe;
/**
* @dirty_lock: Serializes framebuffer flushing
*/
struct mutex dirty_lock;
/**
* @fb_funcs: Framebuffer functions used when creating framebuffers
*/
const struct drm_framebuffer_funcs *fb_funcs;
/**
* @fb_dirty: Framebuffer dirty callback
*/
int (*fb_dirty)(struct drm_framebuffer *framebuffer,
struct drm_file *file_priv, unsigned flags,
unsigned color, struct drm_clip_rect *clips,
unsigned num_clips);
};
static inline struct tinydrm_device *
pipe_to_tinydrm(struct drm_simple_display_pipe *pipe)
{
return container_of(pipe, struct tinydrm_device, pipe);
}
/**
* TINYDRM_MODE - tinydrm display mode
* @hd: Horizontal resolution, width
* @vd: Vertical resolution, height
* @hd_mm: Display width in millimeters
* @vd_mm: Display height in millimeters
*
* This macro creates a &drm_display_mode for use with tinydrm.
*/
#define TINYDRM_MODE(hd, vd, hd_mm, vd_mm) \
.hdisplay = (hd), \
.hsync_start = (hd), \
.hsync_end = (hd), \
.htotal = (hd), \
.vdisplay = (vd), \
.vsync_start = (vd), \
.vsync_end = (vd), \
.vtotal = (vd), \
.width_mm = (hd_mm), \
.height_mm = (vd_mm), \
.type = DRM_MODE_TYPE_DRIVER, \
.clock = 1 /* pass validation */
int devm_tinydrm_init(struct device *parent, struct tinydrm_device *tdev,
const struct drm_framebuffer_funcs *fb_funcs,
struct drm_driver *driver);
int devm_tinydrm_register(struct tinydrm_device *tdev);
void tinydrm_shutdown(struct tinydrm_device *tdev);
void tinydrm_display_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *old_state);
int
tinydrm_display_pipe_init(struct tinydrm_device *tdev,
const struct drm_simple_display_pipe_funcs *funcs,
int connector_type,
const uint32_t *formats,
unsigned int format_count,
const struct drm_display_mode *mode,
unsigned int rotation);
#endif /* __LINUX_TINYDRM_H */
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