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 <drm/drmP.h>
  13
  14 #include <drm/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_NV12MT,
  33 };
  34
  35 int exynos_plane_mode_set(struct drm_plane *plane, struct drm_crtc *crtc,
  36                           struct drm_framebuffer *fb, int crtc_x, int crtc_y,
  37                           unsigned int crtc_w, unsigned int crtc_h,
  38                           uint32_t src_x, uint32_t src_y,
  39                           uint32_t src_w, uint32_t src_h)
  40 {
  41         struct exynos_plane *exynos_plane = to_exynos_plane(plane);
  42         struct exynos_drm_overlay *overlay = &exynos_plane->overlay;
  43         unsigned int actual_w;
  44         unsigned int actual_h;
  45         int nr;
  46         int i;
  47
  48         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
  49
  50         nr = exynos_drm_format_num_buffers(fb->pixel_format);
  51         for (i = 0; i < nr; i++) {
  52                 struct exynos_drm_gem_buf *buffer = exynos_drm_fb_buffer(fb, i);
  53
  54                 if (!buffer) {
  55                         DRM_LOG_KMS("buffer is null\n");
  56                         return -EFAULT;
  57                 }
  58
  59                 overlay->dma_addr[i] = buffer->dma_addr;
  60                 overlay->vaddr[i] = buffer->kvaddr;
  61
  62                 DRM_DEBUG_KMS("buffer: %d, vaddr = 0x%lx, dma_addr = 0x%lx\n",
  63                                 i, (unsigned long)overlay->vaddr[i],
  64                                 (unsigned long)overlay->dma_addr[i]);
  65         }
  66
  67         actual_w = min((unsigned)(crtc->mode.hdisplay - crtc_x), crtc_w);
  68         actual_h = min((unsigned)(crtc->mode.vdisplay - crtc_y), crtc_h);
  69
  70         /* set drm framebuffer data. */
  71         overlay->fb_x = src_x;
  72         overlay->fb_y = src_y;
  73         overlay->fb_width = fb->width;
  74         overlay->fb_height = fb->height;
  75         overlay->src_width = src_w;
  76         overlay->src_height = src_h;
  77         overlay->bpp = fb->bits_per_pixel;
  78         overlay->pitch = fb->pitches[0];
  79         overlay->pixel_format = fb->pixel_format;
  80
  81         /* set overlay range to be displayed. */
  82         overlay->crtc_x = crtc_x;
  83         overlay->crtc_y = crtc_y;
  84         overlay->crtc_width = actual_w;
  85         overlay->crtc_height = actual_h;
  86
  87         /* set drm mode data. */
  88         overlay->mode_width = crtc->mode.hdisplay;
  89         overlay->mode_height = crtc->mode.vdisplay;
  90         overlay->refresh = crtc->mode.vrefresh;
  91         overlay->scan_flag = crtc->mode.flags;
  92
  93         DRM_DEBUG_KMS("overlay : offset_x/y(%d,%d), width/height(%d,%d)",
  94                         overlay->crtc_x, overlay->crtc_y,
  95                         overlay->crtc_width, overlay->crtc_height);
  96
  97         exynos_drm_fn_encoder(crtc, overlay, exynos_drm_encoder_plane_mode_set);
  98
  99         return 0;
 100 }
 101
 102 void exynos_plane_commit(struct drm_plane *plane)
 103 {
 104         struct exynos_plane *exynos_plane = to_exynos_plane(plane);
 105         struct exynos_drm_overlay *overlay = &exynos_plane->overlay;
 106
 107         exynos_drm_fn_encoder(plane->crtc, &overlay->zpos,
 108                         exynos_drm_encoder_plane_commit);
 109 }
 110
 111 void exynos_plane_dpms(struct drm_plane *plane, int mode)
 112 {
 113         struct exynos_plane *exynos_plane = to_exynos_plane(plane);
 114         struct exynos_drm_overlay *overlay = &exynos_plane->overlay;
 115
 116         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 117
 118         if (mode == DRM_MODE_DPMS_ON) {
 119                 if (exynos_plane->enabled)
 120                         return;
 121
 122                 exynos_drm_fn_encoder(plane->crtc, &overlay->zpos,
 123                                 exynos_drm_encoder_plane_enable);
 124
 125                 exynos_plane->enabled = true;
 126         } else {
 127                 if (!exynos_plane->enabled)
 128                         return;
 129
 130                 exynos_drm_fn_encoder(plane->crtc, &overlay->zpos,
 131                                 exynos_drm_encoder_plane_disable);
 132
 133                 exynos_plane->enabled = false;
 134         }
 135 }
 136
 137 static int
 138 exynos_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 139                      struct drm_framebuffer *fb, int crtc_x, int crtc_y,
 140                      unsigned int crtc_w, unsigned int crtc_h,
 141                      uint32_t src_x, uint32_t src_y,
 142                      uint32_t src_w, uint32_t src_h)
 143 {
 144         int ret;
 145
 146         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 147
 148         ret = exynos_plane_mode_set(plane, crtc, fb, crtc_x, crtc_y,
 149                         crtc_w, crtc_h, src_x >> 16, src_y >> 16,
 150                         src_w >> 16, src_h >> 16);
 151         if (ret < 0)
 152                 return ret;
 153
 154         plane->crtc = crtc;
 155         plane->fb = crtc->fb;
 156
 157         exynos_plane_commit(plane);
 158         exynos_plane_dpms(plane, DRM_MODE_DPMS_ON);
 159
 160         return 0;
 161 }
 162
 163 static int exynos_disable_plane(struct drm_plane *plane)
 164 {
 165         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 166
 167         exynos_plane_dpms(plane, DRM_MODE_DPMS_OFF);
 168
 169         return 0;
 170 }
 171
 172 static void exynos_plane_destroy(struct drm_plane *plane)
 173 {
 174         struct exynos_plane *exynos_plane = to_exynos_plane(plane);
 175
 176         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 177
 178         exynos_disable_plane(plane);
 179         drm_plane_cleanup(plane);
 180         kfree(exynos_plane);
 181 }
 182
 183 static int exynos_plane_set_property(struct drm_plane *plane,
 184                                      struct drm_property *property,
 185                                      uint64_t val)
 186 {
 187         struct drm_device *dev = plane->dev;
 188         struct exynos_plane *exynos_plane = to_exynos_plane(plane);
 189         struct exynos_drm_private *dev_priv = dev->dev_private;
 190
 191         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 192
 193         if (property == dev_priv->plane_zpos_property) {
 194                 exynos_plane->overlay.zpos = val;
 195                 return 0;
 196         }
 197
 198         return -EINVAL;
 199 }
 200
 201 static struct drm_plane_funcs exynos_plane_funcs = {
 202         .update_plane   = exynos_update_plane,
 203         .disable_plane  = exynos_disable_plane,
 204         .destroy        = exynos_plane_destroy,
 205         .set_property   = exynos_plane_set_property,
 206 };
 207
 208 static void exynos_plane_attach_zpos_property(struct drm_plane *plane)
 209 {
 210         struct drm_device *dev = plane->dev;
 211         struct exynos_drm_private *dev_priv = dev->dev_private;
 212         struct drm_property *prop;
 213
 214         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 215
 216         prop = dev_priv->plane_zpos_property;
 217         if (!prop) {
 218                 prop = drm_property_create_range(dev, 0, "zpos", 0,
 219                                                  MAX_PLANE - 1);
 220                 if (!prop)
 221                         return;
 222
 223                 dev_priv->plane_zpos_property = prop;
 224         }
 225
 226         drm_object_attach_property(&plane->base, prop, 0);
 227 }
 228
 229 struct drm_plane *exynos_plane_init(struct drm_device *dev,
 230                                     unsigned int possible_crtcs, bool priv)
 231 {
 232         struct exynos_plane *exynos_plane;
 233         int err;
 234
 235         DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 236
 237         exynos_plane = kzalloc(sizeof(struct exynos_plane), GFP_KERNEL);
 238         if (!exynos_plane) {
 239                 DRM_ERROR("failed to allocate plane\n");
 240                 return NULL;
 241         }
 242
 243         err = drm_plane_init(dev, &exynos_plane->base, possible_crtcs,
 244                               &exynos_plane_funcs, formats, ARRAY_SIZE(formats),
 245                               priv);
 246         if (err) {
 247                 DRM_ERROR("failed to initialize plane\n");
 248                 kfree(exynos_plane);
 249                 return NULL;
 250         }
 251
 252         if (priv)
 253                 exynos_plane->overlay.zpos = DEFAULT_ZPOS;
 254         else
 255                 exynos_plane_attach_zpos_property(&exynos_plane->base);
 256
 257         return &exynos_plane->base;
 258 }