drivers/gpu/drm/gma500/gma_display.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright © 2006-2011 Intel Corporation
   4  *
   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
  16 struct drm_encoder;
  17 struct drm_mode_set;
  18
  19 struct 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
  31 struct gma_range_t {
  32         int min, max;
  33 };
  34
  35 struct gma_p2_t {
  36         int dot_limit;
  37         int p2_slow, p2_fast;
  38 };
  39
  40 struct 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
  48 struct 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 */
  57 extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type);
  58 extern void gma_wait_for_vblank(struct drm_device *dev);
  59 extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y,
  60                              struct drm_framebuffer *old_fb);
  61 extern int gma_crtc_cursor_set(struct drm_crtc *crtc,
  62                                struct drm_file *file_priv,
  63                                uint32_t handle,
  64                                uint32_t width, uint32_t height);
  65 extern int gma_crtc_cursor_move(struct drm_crtc *crtc, int x, int y);
  66 extern void gma_crtc_load_lut(struct drm_crtc *crtc);
  67 extern int gma_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
  68                               u16 *blue, u32 size,
  69                               struct drm_modeset_acquire_ctx *ctx);
  70 extern void gma_crtc_dpms(struct drm_crtc *crtc, int mode);
  71 extern void gma_crtc_prepare(struct drm_crtc *crtc);
  72 extern void gma_crtc_commit(struct drm_crtc *crtc);
  73 extern void gma_crtc_disable(struct drm_crtc *crtc);
  74 extern void gma_crtc_destroy(struct drm_crtc *crtc);
  75 extern int gma_crtc_page_flip(struct drm_crtc *crtc,
  76                               struct drm_framebuffer *fb,
  77                               struct drm_pending_vblank_event *event,
  78                               uint32_t page_flip_flags,
  79                               struct drm_modeset_acquire_ctx *ctx);
  80 extern int gma_crtc_set_config(struct drm_mode_set *set,
  81                                struct drm_modeset_acquire_ctx *ctx);
  82
  83 extern void gma_crtc_save(struct drm_crtc *crtc);
  84 extern void gma_crtc_restore(struct drm_crtc *crtc);
  85
  86 extern void gma_encoder_prepare(struct drm_encoder *encoder);
  87 extern void gma_encoder_commit(struct drm_encoder *encoder);
  88 extern void gma_encoder_destroy(struct drm_encoder *encoder);
  89
  90 /* Common clock related functions */
  91 extern const struct gma_limit_t *gma_limit(struct drm_crtc *crtc, int refclk);
  92 extern void gma_clock(int refclk, struct gma_clock_t *clock);
  93 extern bool gma_pll_is_valid(struct drm_crtc *crtc,
  94                              const struct gma_limit_t *limit,
  95                              struct gma_clock_t *clock);
  96 extern bool gma_find_best_pll(const struct gma_limit_t *limit,
  97                               struct drm_crtc *crtc, int target, int refclk,
  98                               struct gma_clock_t *best_clock);
  99 #endif