drivers/gpu/drm/sti/sti_plane.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) STMicroelectronics SA 2014
   4  * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
   5  *          Fabien Dessenne <fabien.dessenne@st.com>
   6  *          for STMicroelectronics.
   7  */
   8
   9 #include <linux/types.h>
  10
  11 #include <drm/drm_blend.h>
  12 #include <drm/drm_fourcc.h>
  13 #include <drm/drm_framebuffer.h>
  14 #include <drm/drm_gem_dma_helper.h>
  15
  16 #include "sti_compositor.h"
  17 #include "sti_drv.h"
  18 #include "sti_plane.h"
  19
  20 const char *sti_plane_to_str(struct sti_plane *plane)
  21 {
  22         switch (plane->desc) {
  23         case STI_GDP_0:
  24                 return "GDP0";
  25         case STI_GDP_1:
  26                 return "GDP1";
  27         case STI_GDP_2:
  28                 return "GDP2";
  29         case STI_GDP_3:
  30                 return "GDP3";
  31         case STI_HQVDP_0:
  32                 return "HQVDP0";
  33         case STI_CURSOR:
  34                 return "CURSOR";
  35         default:
  36                 return "<UNKNOWN PLANE>";
  37         }
  38 }
  39
  40 #define STI_FPS_INTERVAL_MS     3000
  41
  42 void sti_plane_update_fps(struct sti_plane *plane,
  43                           bool new_frame,
  44                           bool new_field)
  45 {
  46         struct drm_plane_state *state = plane->drm_plane.state;
  47         ktime_t now;
  48         struct sti_fps_info *fps;
  49         int fpks, fipks, ms_since_last, num_frames, num_fields;
  50
  51         now = ktime_get();
  52
  53         /* Compute number of frame updates */
  54         fps = &plane->fps_info;
  55
  56         if (new_field)
  57                 fps->curr_field_counter++;
  58
  59         /* do not perform fps calcul if new_frame is false */
  60         if (!new_frame)
  61                 return;
  62
  63         fps->curr_frame_counter++;
  64         ms_since_last = ktime_to_ms(ktime_sub(now, fps->last_timestamp));
  65         num_frames = fps->curr_frame_counter - fps->last_frame_counter;
  66
  67         if (num_frames <= 0  || ms_since_last < STI_FPS_INTERVAL_MS)
  68                 return;
  69
  70         fps->last_timestamp = now;
  71         fps->last_frame_counter = fps->curr_frame_counter;
  72
  73         if (state->fb) {
  74                 fpks = (num_frames * 1000000) / ms_since_last;
  75                 snprintf(plane->fps_info.fps_str, FPS_LENGTH,
  76                          "%-8s %4dx%-4d %.4s @ %3d.%-3.3d fps (%s)",
  77                          plane->drm_plane.name,
  78                          state->fb->width,
  79                          state->fb->height,
  80                          (char *)&state->fb->format->format,
  81                          fpks / 1000, fpks % 1000,
  82                          sti_plane_to_str(plane));
  83         }
  84
  85         if (fps->curr_field_counter) {
  86                 /* Compute number of field updates */
  87                 num_fields = fps->curr_field_counter - fps->last_field_counter;
  88                 fps->last_field_counter = fps->curr_field_counter;
  89                 fipks = (num_fields * 1000000) / ms_since_last;
  90                 snprintf(plane->fps_info.fips_str,
  91                          FPS_LENGTH, " - %3d.%-3.3d field/sec",
  92                          fipks / 1000, fipks % 1000);
  93         } else {
  94                 plane->fps_info.fips_str[0] = '\0';
  95         }
  96
  97         if (fps->output)
  98                 DRM_INFO("%s%s\n",
  99                          plane->fps_info.fps_str,
 100                          plane->fps_info.fips_str);
 101 }
 102
 103 static int sti_plane_get_default_zpos(enum drm_plane_type type)
 104 {
 105         switch (type) {
 106         case DRM_PLANE_TYPE_PRIMARY:
 107                 return 0;
 108         case DRM_PLANE_TYPE_OVERLAY:
 109                 return 1;
 110         case DRM_PLANE_TYPE_CURSOR:
 111                 return 7;
 112         }
 113         return 0;
 114 }
 115
 116 static void sti_plane_attach_zorder_property(struct drm_plane *drm_plane,
 117                                              enum drm_plane_type type)
 118 {
 119         int zpos = sti_plane_get_default_zpos(type);
 120
 121         switch (type) {
 122         case DRM_PLANE_TYPE_PRIMARY:
 123         case DRM_PLANE_TYPE_OVERLAY:
 124                 drm_plane_create_zpos_property(drm_plane, zpos, 0, 6);
 125                 break;
 126         case DRM_PLANE_TYPE_CURSOR:
 127                 drm_plane_create_zpos_immutable_property(drm_plane, zpos);
 128                 break;
 129         }
 130 }
 131
 132 void sti_plane_init_property(struct sti_plane *plane,
 133                              enum drm_plane_type type)
 134 {
 135         sti_plane_attach_zorder_property(&plane->drm_plane, type);
 136
 137         DRM_DEBUG_DRIVER("drm plane:%d mapped to %s\n",
 138                          plane->drm_plane.base.id, sti_plane_to_str(plane));
 139 }