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/*
* Copyright © 2006-2011 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* Authors:
* Eric Anholt <eric@anholt.net>
* Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
*/
#ifndef _GMA_DISPLAY_H_
#define _GMA_DISPLAY_H_
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);
/* 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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