drivers/gpu/drm/sti/sti_plane.h

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