LXR linux/drivers/gpu/drm/sti/sti

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Copyright (C) STMicroelectronics SA 2014
   4 * Author: Benjamin Gaignard <benjamin.gaignard@st.com> for STMicroelectronics.
   5 */
   6
   7#ifndef _STI_PLANE_H_
   8#define _STI_PLANE_H_
   9
  10#include <drm/drm_atomic_helper.h>
  11#include <drm/drm_plane_helper.h>
  12
  13#define to_sti_plane(x) container_of(x, struct sti_plane, drm_plane)
  14
  15#define STI_PLANE_TYPE_SHIFT 8
  16#define STI_PLANE_TYPE_MASK (~((1 << STI_PLANE_TYPE_SHIFT) - 1))
  17
  18enum sti_plane_type {
  19        STI_GDP = 1 << STI_PLANE_TYPE_SHIFT,
  20        STI_VDP = 2 << STI_PLANE_TYPE_SHIFT,
  21        STI_CUR = 3 << STI_PLANE_TYPE_SHIFT,
  22        STI_BCK = 4 << STI_PLANE_TYPE_SHIFT
  23};
  24
  25enum sti_plane_id_of_type {
  26        STI_ID_0 = 0,
  27        STI_ID_1 = 1,
  28        STI_ID_2 = 2,
  29        STI_ID_3 = 3
  30};
  31
  32enum sti_plane_desc {
  33        STI_GDP_0       = STI_GDP | STI_ID_0,
  34        STI_GDP_1       = STI_GDP | STI_ID_1,
  35        STI_GDP_2       = STI_GDP | STI_ID_2,
  36        STI_GDP_3       = STI_GDP | STI_ID_3,
  37        STI_HQVDP_0     = STI_VDP | STI_ID_0,
  38        STI_CURSOR      = STI_CUR,
  39        STI_BACK        = STI_BCK
  40};
  41
  42enum sti_plane_status {
  43        STI_PLANE_READY,
  44        STI_PLANE_UPDATED,
  45        STI_PLANE_DISABLING,
  46        STI_PLANE_FLUSHING,
  47        STI_PLANE_DISABLED,
  48};
  49
  50#define FPS_LENGTH 128
  51struct sti_fps_info {
  52        bool output;
  53        unsigned int curr_frame_counter;
  54        unsigned int last_frame_counter;
  55        unsigned int curr_field_counter;
  56        unsigned int last_field_counter;
  57        ktime_t      last_timestamp;
  58        char fps_str[FPS_LENGTH];
  59        char fips_str[FPS_LENGTH];
  60};
  61
  62/**
  63 * STI plane structure
  64 *
  65 * @plane:              drm plane it is bound to (if any)
  66 * @desc:               plane type & id
  67 * @status:             to know the status of the plane
  68 * @fps_info:           frame per second info
  69 */
  70struct sti_plane {
  71        struct drm_plane drm_plane;
  72        enum sti_plane_desc desc;
  73        enum sti_plane_status status;
  74        struct sti_fps_info fps_info;
  75};
  76
  77const char *sti_plane_to_str(struct sti_plane *plane);
  78void sti_plane_update_fps(struct sti_plane *plane,
  79                          bool new_frame,
  80                          bool new_field);
  81
  82void sti_plane_init_property(struct sti_plane *plane,
  83                             enum drm_plane_type type);
  84void sti_plane_reset(struct drm_plane *plane);
  85#endif
  86