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 <[email protected]>
   5  *          Fabien Dessenne <[email protected]>
   6  *          for STMicroelectronics.
   7  */
   8
   9 #include <linux/types.h>
  10
  11 #include <drm/drm_blend.h>
  12 #include <drm/drm_fb_cma_helper.h>
  13 #include <drm/drm_fourcc.h>
  14 #include <drm/drm_framebuffer.h>
  15 #include <drm/drm_gem_cma_helper.h>
  16
  17 #include "sti_compositor.h"
  18 #include "sti_drv.h"
  19 #include "sti_plane.h"
  20
  21 const char *sti_plane_to_str(struct sti_plane *plane)
  22 {
  23         switch (plane->desc) {
  24         case STI_GDP_0:
  25                 return "GDP0";
  26         case STI_GDP_1:
  27                 return "GDP1";
  28         case STI_GDP_2:
  29                 return "GDP2";
  30         case STI_GDP_3:
  31                 return "GDP3";
  32         case STI_HQVDP_0:
  33                 return "HQVDP0";
  34         case STI_CURSOR:
  35                 return "CURSOR";
  36         default:
  37                 return "<UNKNOWN PLANE>";
  38         }
  39 }
  40
  41 #define STI_FPS_INTERVAL_MS     3000
  42
  43 void sti_plane_update_fps(struct sti_plane *plane,
  44                           bool new_frame,
  45                           bool new_field)
  46 {
  47         struct drm_plane_state *state = plane->drm_plane.state;
  48         ktime_t now;
  49         struct sti_fps_info *fps;
  50         int fpks, fipks, ms_since_last, num_frames, num_fields;
  51
  52         now = ktime_get();
  53
  54         /* Compute number of frame updates */
  55         fps = &plane->fps_info;
  56
  57         if (new_field)
  58                 fps->curr_field_counter++;
  59
  60         /* do not perform fps calcul if new_frame is false */
  61         if (!new_frame)
  62                 return;
  63
  64         fps->curr_frame_counter++;
  65         ms_since_last = ktime_to_ms(ktime_sub(now, fps->last_timestamp));
  66         num_frames = fps->curr_frame_counter - fps->last_frame_counter;
  67
  68         if (num_frames <= 0  || ms_since_last < STI_FPS_INTERVAL_MS)
  69                 return;
  70
  71         fps->last_timestamp = now;
  72         fps->last_frame_counter = fps->curr_frame_counter;
  73
  74         if (state->fb) {
  75                 fpks = (num_frames * 1000000) / ms_since_last;
  76                 snprintf(plane->fps_info.fps_str, FPS_LENGTH,
  77                          "%-8s %4dx%-4d %.4s @ %3d.%-3.3d fps (%s)",
  78                          plane->drm_plane.name,
  79                          state->fb->width,
  80                          state->fb->height,
  81                          (char *)&state->fb->format->format,
  82                          fpks / 1000, fpks % 1000,
  83                          sti_plane_to_str(plane));
  84         }
  85
  86         if (fps->curr_field_counter) {
  87                 /* Compute number of field updates */
  88                 num_fields = fps->curr_field_counter - fps->last_field_counter;
  89                 fps->last_field_counter = fps->curr_field_counter;
  90                 fipks = (num_fields * 1000000) / ms_since_last;
  91                 snprintf(plane->fps_info.fips_str,
  92                          FPS_LENGTH, " - %3d.%-3.3d field/sec",
  93                          fipks / 1000, fipks % 1000);
  94         } else {
  95                 plane->fps_info.fips_str[0] = '\0';
  96         }
  97
  98         if (fps->output)
  99                 DRM_INFO("%s%s\n",
 100                          plane->fps_info.fps_str,
 101                          plane->fps_info.fips_str);
 102 }
 103
 104 static int sti_plane_get_default_zpos(enum drm_plane_type type)
 105 {
 106         switch (type) {
 107         case DRM_PLANE_TYPE_PRIMARY:
 108                 return 0;
 109         case DRM_PLANE_TYPE_OVERLAY:
 110                 return 1;
 111         case DRM_PLANE_TYPE_CURSOR:
 112                 return 7;
 113         }
 114         return 0;
 115 }
 116
 117 static void sti_plane_attach_zorder_property(struct drm_plane *drm_plane,
 118                                              enum drm_plane_type type)
 119 {
 120         int zpos = sti_plane_get_default_zpos(type);
 121
 122         switch (type) {
 123         case DRM_PLANE_TYPE_PRIMARY:
 124         case DRM_PLANE_TYPE_OVERLAY:
 125                 drm_plane_create_zpos_property(drm_plane, zpos, 0, 6);
 126                 break;
 127         case DRM_PLANE_TYPE_CURSOR:
 128                 drm_plane_create_zpos_immutable_property(drm_plane, zpos);
 129                 break;
 130         }
 131 }
 132
 133 void sti_plane_init_property(struct sti_plane *plane,
 134                              enum drm_plane_type type)
 135 {
 136         sti_plane_attach_zorder_property(&plane->drm_plane, type);
 137
 138         DRM_DEBUG_DRIVER("drm plane:%d mapped to %s\n",
 139                          plane->drm_plane.base.id, sti_plane_to_str(plane));
 140 }