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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright © 2006-2011 Intel Corporation4 *5 * Authors:6 * Eric Anholt <eric@anholt.net>7 * Patrik Jakobsson <patrik.r.jakobsson@gmail.com>8 */9 10#ifndef _GMA_DISPLAY_H_11#define _GMA_DISPLAY_H_12 13#include <linux/pm_runtime.h>14#include <drm/drm_vblank.h>15 16struct drm_encoder;17struct drm_mode_set;18 19struct gma_clock_t {20 /* given values */21 int n;22 int m1, m2;23 int p1, p2;24 /* derived values */25 int dot;26 int vco;27 int m;28 int p;29};30 31struct gma_range_t {32 int min, max;33};34 35struct gma_p2_t {36 int dot_limit;37 int p2_slow, p2_fast;38};39 40struct gma_limit_t {41 struct gma_range_t dot, vco, n, m, m1, m2, p, p1;42 struct gma_p2_t p2;43 bool (*find_pll)(const struct gma_limit_t *, struct drm_crtc *,44 int target, int refclk,45 struct gma_clock_t *best_clock);46};47 48struct gma_clock_funcs {49 void (*clock)(int refclk, struct gma_clock_t *clock);50 const struct gma_limit_t *(*limit)(struct drm_crtc *crtc, int refclk);51 bool (*pll_is_valid)(struct drm_crtc *crtc,52 const struct gma_limit_t *limit,53 struct gma_clock_t *clock);54};55 56/* Common pipe related functions */57extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type);58extern void gma_wait_for_vblank(struct drm_device *dev);59extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y,60 struct drm_framebuffer *old_fb);61extern void gma_crtc_load_lut(struct drm_crtc *crtc);62extern void gma_crtc_dpms(struct drm_crtc *crtc, int mode);63extern void gma_crtc_prepare(struct drm_crtc *crtc);64extern void gma_crtc_commit(struct drm_crtc *crtc);65extern void gma_crtc_disable(struct drm_crtc *crtc);66extern void gma_crtc_destroy(struct drm_crtc *crtc);67extern int gma_crtc_page_flip(struct drm_crtc *crtc,68 struct drm_framebuffer *fb,69 struct drm_pending_vblank_event *event,70 uint32_t page_flip_flags,71 struct drm_modeset_acquire_ctx *ctx);72 73extern void gma_crtc_save(struct drm_crtc *crtc);74extern void gma_crtc_restore(struct drm_crtc *crtc);75 76extern const struct drm_crtc_funcs gma_crtc_funcs;77 78extern void gma_encoder_prepare(struct drm_encoder *encoder);79extern void gma_encoder_commit(struct drm_encoder *encoder);80extern void gma_encoder_destroy(struct drm_encoder *encoder);81 82/* Common clock related functions */83extern const struct gma_limit_t *gma_limit(struct drm_crtc *crtc, int refclk);84extern bool gma_pll_is_valid(struct drm_crtc *crtc,85 const struct gma_limit_t *limit,86 struct gma_clock_t *clock);87extern bool gma_find_best_pll(const struct gma_limit_t *limit,88 struct drm_crtc *crtc, int target, int refclk,89 struct gma_clock_t *best_clock);90#endif91