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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright © 2006-2011 Intel Corporation
*
* Authors:
* Eric Anholt <eric@anholt.net>
* Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
*/
#ifndef _GMA_DISPLAY_H_
#define _GMA_DISPLAY_H_
#include <linux/pm_runtime.h>
#include <drm/drm_vblank.h>
struct drm_encoder;
struct drm_mode_set;
struct gma_clock_t {
/* given values */
int n;
int m1, m2;
int p1, p2;
/* derived values */
int dot;
int vco;
int m;
int p;
};
struct gma_range_t {
int min, max;
};
struct gma_p2_t {
int dot_limit;
int p2_slow, p2_fast;
};
struct gma_limit_t {
struct gma_range_t dot, vco, n, m, m1, m2, p, p1;
struct gma_p2_t p2;
bool (*find_pll)(const struct gma_limit_t *, struct drm_crtc *,
int target, int refclk,
struct gma_clock_t *best_clock);
};
struct gma_clock_funcs {
void (*clock)(int refclk, struct gma_clock_t *clock);
const struct gma_limit_t *(*limit)(struct drm_crtc *crtc, int refclk);
bool (*pll_is_valid)(struct drm_crtc *crtc,
const struct gma_limit_t *limit,
struct gma_clock_t *clock);
};
/* Common pipe related functions */
extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type);
extern void gma_wait_for_vblank(struct drm_device *dev);
extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb);
extern void gma_crtc_load_lut(struct drm_crtc *crtc);
extern void gma_crtc_dpms(struct drm_crtc *crtc, int mode);
extern void gma_crtc_prepare(struct drm_crtc *crtc);
extern void gma_crtc_commit(struct drm_crtc *crtc);
extern void gma_crtc_disable(struct drm_crtc *crtc);
extern void gma_crtc_destroy(struct drm_crtc *crtc);
extern int gma_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
uint32_t page_flip_flags,
struct drm_modeset_acquire_ctx *ctx);
extern void gma_crtc_save(struct drm_crtc *crtc);
extern void gma_crtc_restore(struct drm_crtc *crtc);
extern const struct drm_crtc_funcs gma_crtc_funcs;
extern void gma_encoder_prepare(struct drm_encoder *encoder);
extern void gma_encoder_commit(struct drm_encoder *encoder);
extern void gma_encoder_destroy(struct drm_encoder *encoder);
/* Common clock related functions */
extern const struct gma_limit_t *gma_limit(struct drm_crtc *crtc, int refclk);
extern void gma_clock(int refclk, struct gma_clock_t *clock);
extern bool gma_pll_is_valid(struct drm_crtc *crtc,
const struct gma_limit_t *limit,
struct gma_clock_t *clock);
extern bool gma_find_best_pll(const struct gma_limit_t *limit,
struct drm_crtc *crtc, int target, int refclk,
struct gma_clock_t *best_clock);
#endif
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