drivers/gpu/drm/exynos/exynos_drm_plane.c

   1 /*
   2  * Copyright (C) 2011 Samsung Electronics Co.Ltd
   3  * Authors: Joonyoung Shim <jy0922.shim@samsung.com>
   4  *
   5  * This program is free software; you can redistribute  it and/or modify it
   6  * under  the terms of  the GNU General  Public License as published by the
   7  * Free Software Foundation;  either version 2 of the  License, or (at your
   8  * option) any later version.
   9  *
  10  */
  11
  12 #include "drmP.h"
  13
  14 #include "exynos_drm.h"
  15 #include "exynos_drm_drv.h"
  16 #include "exynos_drm_encoder.h"
  17 #include "exynos_drm_fb.h"
  18 #include "exynos_drm_gem.h"
  19
  20 #define to_exynos_plane(x)      container_of(x, struct exynos_plane, base)
  21
  22 struct exynos_plane {
  23         struct drm_plane                base;
  24         struct exynos_drm_overlay       overlay;
  25         bool                            enabled;
  26 };
  27
  28 static const uint32_t formats[] = {
  29         DRM_FORMAT_XRGB8888,
  30         DRM_FORMAT_ARGB8888,
  31         DRM_FORMAT_NV12,
  32         DRM_FORMAT_NV12M,
  33         DRM_FORMAT_NV12MT,
  34 };
  35
  36 int exynos_plane_mode_set(struct drm_plane *plane, struct drm_crtc *crtc,
  37                           struct drm_framebuffer *fb, int crtc_x, int crtc_y,
  38                           unsigned int crtc_w, unsigned int crtc_h,
  39                           uint32_t src_x, uint32_t src_y,
  40                           uint32_t src_w, uint32_t src_h)
  41 {
  42         struct exynos_plane *exynos_plane = to_exynos_plane(plane);
  43         struct exynos_drm_overlay *overlay = &exynos_plane->overlay;
  44         unsigned int actual_w;
  45         unsigned int actual_h;
  46         int nr;
  47         int i;
  48
  49         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
  50
  51         nr = exynos_drm_format_num_buffers(fb->pixel_format);
  52         for (i = 0; i < nr; i++) {
  53                 struct exynos_drm_gem_buf *buffer = exynos_drm_fb_buffer(fb, i);
  54
  55                 if (!buffer) {
  56                         DRM_LOG_KMS("buffer is null\n");
  57                         return -EFAULT;
  58                 }
  59
  60                 overlay->dma_addr[i] = buffer->dma_addr;
  61                 overlay->vaddr[i] = buffer->kvaddr;
  62
  63                 DRM_DEBUG_KMS("buffer: %d, vaddr = 0x%lx, dma_addr = 0x%lx\n",
  64                                 i, (unsigned long)overlay->vaddr[i],
  65                                 (unsigned long)overlay->dma_addr[i]);
  66         }
  67
  68         actual_w = min((unsigned)(crtc->mode.hdisplay - crtc_x), crtc_w);
  69         actual_h = min((unsigned)(crtc->mode.vdisplay - crtc_y), crtc_h);
  70
  71         /* set drm framebuffer data. */
  72         overlay->fb_x = src_x;
  73         overlay->fb_y = src_y;
  74         overlay->fb_width = fb->width;
  75         overlay->fb_height = fb->height;
  76         overlay->src_width = src_w;
  77         overlay->src_height = src_h;
  78         overlay->bpp = fb->bits_per_pixel;
  79         overlay->pitch = fb->pitches[0];
  80         overlay->pixel_format = fb->pixel_format;
  81
  82         /* set overlay range to be displayed. */
  83         overlay->crtc_x = crtc_x;
  84         overlay->crtc_y = crtc_y;
  85         overlay->crtc_width = actual_w;
  86         overlay->crtc_height = actual_h;
  87
  88         /* set drm mode data. */
  89         overlay->mode_width = crtc->mode.hdisplay;
  90         overlay->mode_height = crtc->mode.vdisplay;
  91         overlay->refresh = crtc->mode.vrefresh;
  92         overlay->scan_flag = crtc->mode.flags;
  93
  94         DRM_DEBUG_KMS("overlay : offset_x/y(%d,%d), width/height(%d,%d)",
  95                         overlay->crtc_x, overlay->crtc_y,
  96                         overlay->crtc_width, overlay->crtc_height);
  97
  98         exynos_drm_fn_encoder(crtc, overlay, exynos_drm_encoder_plane_mode_set);
  99
 100         return 0;
 101 }
 102
 103 void exynos_plane_commit(struct drm_plane *plane)
 104 {
 105         struct exynos_plane *exynos_plane = to_exynos_plane(plane);
 106         struct exynos_drm_overlay *overlay = &exynos_plane->overlay;
 107
 108         exynos_drm_fn_encoder(plane->crtc, &overlay->zpos,
 109                         exynos_drm_encoder_plane_commit);
 110
 111         exynos_plane->enabled = true;
 112 }
 113
 114 static int
 115 exynos_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 116                      struct drm_framebuffer *fb, int crtc_x, int crtc_y,
 117                      unsigned int crtc_w, unsigned int crtc_h,
 118                      uint32_t src_x, uint32_t src_y,
 119                      uint32_t src_w, uint32_t src_h)
 120 {
 121         int ret;
 122
 123         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 124
 125         ret = exynos_plane_mode_set(plane, crtc, fb, crtc_x, crtc_y,
 126                         crtc_w, crtc_h, src_x >> 16, src_y >> 16,
 127                         src_w >> 16, src_h >> 16);
 128         if (ret < 0)
 129                 return ret;
 130
 131         plane->crtc = crtc;
 132         plane->fb = crtc->fb;
 133
 134         exynos_plane_commit(plane);
 135
 136         return 0;
 137 }
 138
 139 static int exynos_disable_plane(struct drm_plane *plane)
 140 {
 141         struct exynos_plane *exynos_plane = to_exynos_plane(plane);
 142         struct exynos_drm_overlay *overlay = &exynos_plane->overlay;
 143
 144         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 145
 146         if (!exynos_plane->enabled)
 147                 return 0;
 148
 149         exynos_drm_fn_encoder(plane->crtc, &overlay->zpos,
 150                         exynos_drm_encoder_plane_disable);
 151
 152         exynos_plane->enabled = false;
 153
 154         return 0;
 155 }
 156
 157 static void exynos_plane_destroy(struct drm_plane *plane)
 158 {
 159         struct exynos_plane *exynos_plane = to_exynos_plane(plane);
 160
 161         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 162
 163         exynos_disable_plane(plane);
 164         drm_plane_cleanup(plane);
 165         kfree(exynos_plane);
 166 }
 167
 168 static int exynos_plane_set_property(struct drm_plane *plane,
 169                                      struct drm_property *property,
 170                                      uint64_t val)
 171 {
 172         struct drm_device *dev = plane->dev;
 173         struct exynos_plane *exynos_plane = to_exynos_plane(plane);
 174         struct exynos_drm_private *dev_priv = dev->dev_private;
 175
 176         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 177
 178         if (property == dev_priv->plane_zpos_property) {
 179                 exynos_plane->overlay.zpos = val;
 180                 return 0;
 181         }
 182
 183         return -EINVAL;
 184 }
 185
 186 static struct drm_plane_funcs exynos_plane_funcs = {
 187         .update_plane   = exynos_update_plane,
 188         .disable_plane  = exynos_disable_plane,
 189         .destroy        = exynos_plane_destroy,
 190         .set_property   = exynos_plane_set_property,
 191 };
 192
 193 static void exynos_plane_attach_zpos_property(struct drm_plane *plane)
 194 {
 195         struct drm_device *dev = plane->dev;
 196         struct exynos_drm_private *dev_priv = dev->dev_private;
 197         struct drm_property *prop;
 198
 199         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 200
 201         prop = dev_priv->plane_zpos_property;
 202         if (!prop) {
 203                 prop = drm_property_create_range(dev, 0, "zpos", 0,
 204                                                  MAX_PLANE - 1);
 205                 if (!prop)
 206                         return;
 207
 208                 dev_priv->plane_zpos_property = prop;
 209         }
 210
 211         drm_object_attach_property(&plane->base, prop, 0);
 212 }
 213
 214 struct drm_plane *exynos_plane_init(struct drm_device *dev,
 215                                     unsigned int possible_crtcs, bool priv)
 216 {
 217         struct exynos_plane *exynos_plane;
 218         int err;
 219
 220         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 221
 222         exynos_plane = kzalloc(sizeof(struct exynos_plane), GFP_KERNEL);
 223         if (!exynos_plane) {
 224                 DRM_ERROR("failed to allocate plane\n");
 225                 return NULL;
 226         }
 227
 228         err = drm_plane_init(dev, &exynos_plane->base, possible_crtcs,
 229                               &exynos_plane_funcs, formats, ARRAY_SIZE(formats),
 230                               priv);
 231         if (err) {
 232                 DRM_ERROR("failed to initialize plane\n");
 233                 kfree(exynos_plane);
 234                 return NULL;
 235         }
 236
 237         if (priv)
 238                 exynos_plane->overlay.zpos = DEFAULT_ZPOS;
 239         else
 240                 exynos_plane_attach_zpos_property(&exynos_plane->base);
 241
 242         return &exynos_plane->base;
 243 }