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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef DRM_SYSFB_HELPER_H
#define DRM_SYSFB_HELPER_H
#include <linux/container_of.h>
#include <linux/iosys-map.h>
#include <video/pixel_format.h>
#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_modes.h>
struct drm_format_info;
struct drm_scanout_buffer;
struct screen_info;
/*
* Input parsing
*/
struct drm_sysfb_format {
struct pixel_format pixel;
u32 fourcc;
};
int drm_sysfb_get_validated_int(struct drm_device *dev, const char *name,
u64 value, u32 max);
int drm_sysfb_get_validated_int0(struct drm_device *dev, const char *name,
u64 value, u32 max);
#if defined(CONFIG_SCREEN_INFO)
int drm_sysfb_get_width_si(struct drm_device *dev, const struct screen_info *si);
int drm_sysfb_get_height_si(struct drm_device *dev, const struct screen_info *si);
struct resource *drm_sysfb_get_memory_si(struct drm_device *dev,
const struct screen_info *si,
struct resource *res);
int drm_sysfb_get_stride_si(struct drm_device *dev, const struct screen_info *si,
const struct drm_format_info *format,
unsigned int width, unsigned int height, u64 size);
u64 drm_sysfb_get_visible_size_si(struct drm_device *dev, const struct screen_info *si,
unsigned int height, unsigned int stride, u64 size);
const struct drm_format_info *drm_sysfb_get_format_si(struct drm_device *dev,
const struct drm_sysfb_format *formats,
size_t nformats,
const struct screen_info *si);
#endif
/*
* Input parsing
*/
int drm_sysfb_get_validated_int(struct drm_device *dev, const char *name,
u64 value, u32 max);
int drm_sysfb_get_validated_int0(struct drm_device *dev, const char *name,
u64 value, u32 max);
/*
* Display modes
*/
struct drm_display_mode drm_sysfb_mode(unsigned int width,
unsigned int height,
unsigned int width_mm,
unsigned int height_mm);
/*
* Device
*/
struct drm_sysfb_device {
struct drm_device dev;
const u8 *edid; /* can be NULL */
/* hardware settings */
struct drm_display_mode fb_mode;
const struct drm_format_info *fb_format;
unsigned int fb_pitch;
unsigned int fb_gamma_lut_size;
/* hardware-framebuffer kernel address */
struct iosys_map fb_addr;
};
static inline struct drm_sysfb_device *to_drm_sysfb_device(struct drm_device *dev)
{
return container_of(dev, struct drm_sysfb_device, dev);
}
/*
* Plane
*/
int drm_sysfb_plane_helper_atomic_check(struct drm_plane *plane,
struct drm_atomic_state *new_state);
void drm_sysfb_plane_helper_atomic_update(struct drm_plane *plane,
struct drm_atomic_state *state);
void drm_sysfb_plane_helper_atomic_disable(struct drm_plane *plane,
struct drm_atomic_state *state);
int drm_sysfb_plane_helper_get_scanout_buffer(struct drm_plane *plane,
struct drm_scanout_buffer *sb);
#define DRM_SYSFB_PLANE_NFORMATS(_num_native) \
((_num_native) + 1)
#define DRM_SYSFB_PLANE_FORMAT_MODIFIERS \
DRM_FORMAT_MOD_LINEAR, \
DRM_FORMAT_MOD_INVALID
#define DRM_SYSFB_PLANE_HELPER_FUNCS \
DRM_GEM_SHADOW_PLANE_HELPER_FUNCS, \
.atomic_check = drm_sysfb_plane_helper_atomic_check, \
.atomic_update = drm_sysfb_plane_helper_atomic_update, \
.atomic_disable = drm_sysfb_plane_helper_atomic_disable, \
.get_scanout_buffer = drm_sysfb_plane_helper_get_scanout_buffer
#define DRM_SYSFB_PLANE_FUNCS \
.update_plane = drm_atomic_helper_update_plane, \
.disable_plane = drm_atomic_helper_disable_plane, \
DRM_GEM_SHADOW_PLANE_FUNCS
/*
* CRTC
*/
struct drm_sysfb_crtc_state {
struct drm_crtc_state base;
/* Primary-plane format; required for color mgmt. */
const struct drm_format_info *format;
};
static inline struct drm_sysfb_crtc_state *
to_drm_sysfb_crtc_state(struct drm_crtc_state *base)
{
return container_of(base, struct drm_sysfb_crtc_state, base);
}
enum drm_mode_status drm_sysfb_crtc_helper_mode_valid(struct drm_crtc *crtc,
const struct drm_display_mode *mode);
int drm_sysfb_crtc_helper_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *new_state);
#define DRM_SYSFB_CRTC_HELPER_FUNCS \
.mode_valid = drm_sysfb_crtc_helper_mode_valid, \
.atomic_check = drm_sysfb_crtc_helper_atomic_check
void drm_sysfb_crtc_reset(struct drm_crtc *crtc);
struct drm_crtc_state *drm_sysfb_crtc_atomic_duplicate_state(struct drm_crtc *crtc);
void drm_sysfb_crtc_atomic_destroy_state(struct drm_crtc *crtc, struct drm_crtc_state *crtc_state);
#define DRM_SYSFB_CRTC_FUNCS \
.reset = drm_sysfb_crtc_reset, \
.set_config = drm_atomic_helper_set_config, \
.page_flip = drm_atomic_helper_page_flip, \
.atomic_duplicate_state = drm_sysfb_crtc_atomic_duplicate_state, \
.atomic_destroy_state = drm_sysfb_crtc_atomic_destroy_state
/*
* Connector
*/
int drm_sysfb_connector_helper_get_modes(struct drm_connector *connector);
#define DRM_SYSFB_CONNECTOR_HELPER_FUNCS \
.get_modes = drm_sysfb_connector_helper_get_modes
#define DRM_SYSFB_CONNECTOR_FUNCS \
.reset = drm_atomic_helper_connector_reset, \
.fill_modes = drm_helper_probe_single_connector_modes, \
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, \
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state
/*
* Mode config
*/
#define DRM_SYSFB_MODE_CONFIG_FUNCS \
.fb_create = drm_gem_fb_create_with_dirty, \
.atomic_check = drm_atomic_helper_check, \
.atomic_commit = drm_atomic_helper_commit
#endif
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