drivers/gpu/drm/sti/sti_plane.h

   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
  18 enum 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
  25 enum 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
  32 enum 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
  42 enum 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
  51 struct 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  */
  70 struct 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
  77 const char *sti_plane_to_str(struct sti_plane *plane);
  78 void sti_plane_update_fps(struct sti_plane *plane,
  79                           bool new_frame,
  80                           bool new_field);
  81
  82 void sti_plane_init_property(struct sti_plane *plane,
  83                              enum drm_plane_type type);
  84 void sti_plane_reset(struct drm_plane *plane);
  85 #endif