LXR linux/drivers/gpu/drm/gma500/gma

   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 void gma_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
  76                               u16 *blue, u32 start, 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
 101