drivers/gpu/drm/gma500/gma_display.h

   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
  27 struct 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
  39 struct gma_range_t {
  40         int min, max;
  41 };
  42
  43 struct gma_p2_t {
  44         int dot_limit;
  45         int p2_slow, p2_fast;
  46 };
  47
  48 struct 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
  56 struct 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 */
  65 extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type);
  66 extern void gma_wait_for_vblank(struct drm_device *dev);
  67 extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y,
  68                              struct drm_framebuffer *old_fb);
  69 extern 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);
  73 extern int gma_crtc_cursor_move(struct drm_crtc *crtc, int x, int y);
  74 extern void gma_crtc_load_lut(struct drm_crtc *crtc);
  75 extern void gma_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
  76                                u16 *blue, u32 start, u32 size);
  77 extern void gma_crtc_dpms(struct drm_crtc *crtc, int mode);
  78 extern bool gma_crtc_mode_fixup(struct drm_crtc *crtc,
  79                                 const struct drm_display_mode *mode,
  80                                 struct drm_display_mode *adjusted_mode);
  81 extern void gma_crtc_prepare(struct drm_crtc *crtc);
  82 extern void gma_crtc_commit(struct drm_crtc *crtc);
  83 extern void gma_crtc_disable(struct drm_crtc *crtc);
  84 extern void gma_crtc_destroy(struct drm_crtc *crtc);
  85 extern int gma_crtc_set_config(struct drm_mode_set *set);
  86
  87 extern void gma_crtc_save(struct drm_crtc *crtc);
  88 extern void gma_crtc_restore(struct drm_crtc *crtc);
  89
  90 extern void gma_encoder_prepare(struct drm_encoder *encoder);
  91 extern void gma_encoder_commit(struct drm_encoder *encoder);
  92 extern void gma_encoder_destroy(struct drm_encoder *encoder);
  93 extern bool gma_encoder_mode_fixup(struct drm_encoder *encoder,
  94                                    const struct drm_display_mode *mode,
  95                                    struct drm_display_mode *adjusted_mode);
  96
  97 /* Common clock related functions */
  98 extern const struct gma_limit_t *gma_limit(struct drm_crtc *crtc, int refclk);
  99 extern void gma_clock(int refclk, struct gma_clock_t *clock);
 100 extern bool gma_pll_is_valid(struct drm_crtc *crtc,
 101                              const struct gma_limit_t *limit,
 102                              struct gma_clock_t *clock);
 103 extern bool gma_find_best_pll(const struct gma_limit_t *limit,
 104                               struct drm_crtc *crtc, int target, int refclk,
 105                               struct gma_clock_t *best_clock);
 106 #endif