1/*
  2 * Copyright © 2006-2011 Intel Corporation
  3 *
  4 * This program is free software; you can redistribute it and/or modify it
  5 * under the terms and conditions of the GNU General Public License,
  6 * version 2, as published by the Free Software Foundation.
  7 *
  8 * This program is distributed in the hope it will be useful, but WITHOUT
  9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 10 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 11 * more details.
 12 *
 13 * You should have received a copy of the GNU General Public License along with
 14 * this program; if not, write to the Free Software Foundation, Inc.,
 15 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 16 *
 17 * Authors:
 18 *	Eric Anholt <eric@anholt.net>
 19 *	Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
 20 */
 21
 22#ifndef _GMA_DISPLAY_H_
 23#define _GMA_DISPLAY_H_
 24
 25#include <linux/pm_runtime.h>
 26
 27struct gma_clock_t {
 28	/* given values */
 29	int n;
 30	int m1, m2;
 31	int p1, p2;
 32	/* derived values */
 33	int dot;
 34	int vco;
 35	int m;
 36	int p;
 37};
 38
 39struct gma_range_t {
 40	int min, max;
 41};
 42
 43struct gma_p2_t {
 44	int dot_limit;
 45	int p2_slow, p2_fast;
 46};
 47
 48struct gma_limit_t {
 49	struct gma_range_t dot, vco, n, m, m1, m2, p, p1;
 50	struct gma_p2_t p2;
 51	bool (*find_pll)(const struct gma_limit_t *, struct drm_crtc *,
 52			 int target, int refclk,
 53			 struct gma_clock_t *best_clock);
 54};
 55
 56struct gma_clock_funcs {
 57	void (*clock)(int refclk, struct gma_clock_t *clock);
 58	const struct gma_limit_t *(*limit)(struct drm_crtc *crtc, int refclk);
 59	bool (*pll_is_valid)(struct drm_crtc *crtc,
 60			     const struct gma_limit_t *limit,
 61			     struct gma_clock_t *clock);
 62};
 63
 64/* Common pipe related functions */
 65extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type);
 66extern void gma_wait_for_vblank(struct drm_device *dev);
 67extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y,
 68			     struct drm_framebuffer *old_fb);
 69extern int gma_crtc_cursor_set(struct drm_crtc *crtc,
 70			       struct drm_file *file_priv,
 71			       uint32_t handle,
 72			       uint32_t width, uint32_t height);
 73extern int gma_crtc_cursor_move(struct drm_crtc *crtc, int x, int y);
 74extern void gma_crtc_load_lut(struct drm_crtc *crtc);
 75extern int gma_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
 76			      u16 *blue, u32 size);
 77extern void gma_crtc_dpms(struct drm_crtc *crtc, int mode);
 78extern void gma_crtc_prepare(struct drm_crtc *crtc);
 79extern void gma_crtc_commit(struct drm_crtc *crtc);
 80extern void gma_crtc_disable(struct drm_crtc *crtc);
 81extern void gma_crtc_destroy(struct drm_crtc *crtc);
 82extern int gma_crtc_set_config(struct drm_mode_set *set);
 83
 84extern void gma_crtc_save(struct drm_crtc *crtc);
 85extern void gma_crtc_restore(struct drm_crtc *crtc);
 86
 87extern void gma_encoder_prepare(struct drm_encoder *encoder);
 88extern void gma_encoder_commit(struct drm_encoder *encoder);
 89extern void gma_encoder_destroy(struct drm_encoder *encoder);
 90
 91/* Common clock related functions */
 92extern const struct gma_limit_t *gma_limit(struct drm_crtc *crtc, int refclk);
 93extern void gma_clock(int refclk, struct gma_clock_t *clock);
 94extern bool gma_pll_is_valid(struct drm_crtc *crtc,
 95			     const struct gma_limit_t *limit,
 96			     struct gma_clock_t *clock);
 97extern bool gma_find_best_pll(const struct gma_limit_t *limit,
 98			      struct drm_crtc *crtc, int target, int refclk,
 99			      struct gma_clock_t *best_clock);
100#endif