drivers/gpu/drm/sun4i/sun8i_mixer.c

   1 /*
   2  * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
   3  *
   4  * Based on sun4i_backend.c, which is:
   5  *   Copyright (C) 2015 Free Electrons
   6  *   Copyright (C) 2015 NextThing Co
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  */
  13
  14 #include <drm/drmP.h>
  15 #include <drm/drm_atomic_helper.h>
  16 #include <drm/drm_crtc.h>
  17 #include <drm/drm_crtc_helper.h>
  18 #include <drm/drm_fb_cma_helper.h>
  19 #include <drm/drm_gem_cma_helper.h>
  20 #include <drm/drm_plane_helper.h>
  21
  22 #include <linux/component.h>
  23 #include <linux/dma-mapping.h>
  24 #include <linux/of_device.h>
  25 #include <linux/of_graph.h>
  26 #include <linux/reset.h>
  27
  28 #include "sun4i_drv.h"
  29 #include "sun8i_mixer.h"
  30 #include "sun8i_ui_layer.h"
  31 #include "sun8i_vi_layer.h"
  32 #include "sunxi_engine.h"
  33
  34 static const struct de2_fmt_info de2_formats[] = {
  35         {
  36                 .drm_fmt = DRM_FORMAT_ARGB8888,
  37                 .de2_fmt = SUN8I_MIXER_FBFMT_ARGB8888,
  38                 .rgb = true,
  39                 .csc = SUN8I_CSC_MODE_OFF,
  40         },
  41         {
  42                 .drm_fmt = DRM_FORMAT_ABGR8888,
  43                 .de2_fmt = SUN8I_MIXER_FBFMT_ABGR8888,
  44                 .rgb = true,
  45                 .csc = SUN8I_CSC_MODE_OFF,
  46         },
  47         {
  48                 .drm_fmt = DRM_FORMAT_RGBA8888,
  49                 .de2_fmt = SUN8I_MIXER_FBFMT_RGBA8888,
  50                 .rgb = true,
  51                 .csc = SUN8I_CSC_MODE_OFF,
  52         },
  53         {
  54                 .drm_fmt = DRM_FORMAT_BGRA8888,
  55                 .de2_fmt = SUN8I_MIXER_FBFMT_BGRA8888,
  56                 .rgb = true,
  57                 .csc = SUN8I_CSC_MODE_OFF,
  58         },
  59         {
  60                 .drm_fmt = DRM_FORMAT_XRGB8888,
  61                 .de2_fmt = SUN8I_MIXER_FBFMT_XRGB8888,
  62                 .rgb = true,
  63                 .csc = SUN8I_CSC_MODE_OFF,
  64         },
  65         {
  66                 .drm_fmt = DRM_FORMAT_XBGR8888,
  67                 .de2_fmt = SUN8I_MIXER_FBFMT_XBGR8888,
  68                 .rgb = true,
  69                 .csc = SUN8I_CSC_MODE_OFF,
  70         },
  71         {
  72                 .drm_fmt = DRM_FORMAT_RGBX8888,
  73                 .de2_fmt = SUN8I_MIXER_FBFMT_RGBX8888,
  74                 .rgb = true,
  75                 .csc = SUN8I_CSC_MODE_OFF,
  76         },
  77         {
  78                 .drm_fmt = DRM_FORMAT_BGRX8888,
  79                 .de2_fmt = SUN8I_MIXER_FBFMT_BGRX8888,
  80                 .rgb = true,
  81                 .csc = SUN8I_CSC_MODE_OFF,
  82         },
  83         {
  84                 .drm_fmt = DRM_FORMAT_RGB888,
  85                 .de2_fmt = SUN8I_MIXER_FBFMT_RGB888,
  86                 .rgb = true,
  87                 .csc = SUN8I_CSC_MODE_OFF,
  88         },
  89         {
  90                 .drm_fmt = DRM_FORMAT_BGR888,
  91                 .de2_fmt = SUN8I_MIXER_FBFMT_BGR888,
  92                 .rgb = true,
  93                 .csc = SUN8I_CSC_MODE_OFF,
  94         },
  95         {
  96                 .drm_fmt = DRM_FORMAT_RGB565,
  97                 .de2_fmt = SUN8I_MIXER_FBFMT_RGB565,
  98                 .rgb = true,
  99                 .csc = SUN8I_CSC_MODE_OFF,
 100         },
 101         {
 102                 .drm_fmt = DRM_FORMAT_BGR565,
 103                 .de2_fmt = SUN8I_MIXER_FBFMT_BGR565,
 104                 .rgb = true,
 105                 .csc = SUN8I_CSC_MODE_OFF,
 106         },
 107         {
 108                 .drm_fmt = DRM_FORMAT_ARGB4444,
 109                 .de2_fmt = SUN8I_MIXER_FBFMT_ARGB4444,
 110                 .rgb = true,
 111                 .csc = SUN8I_CSC_MODE_OFF,
 112         },
 113         {
 114                 .drm_fmt = DRM_FORMAT_ABGR4444,
 115                 .de2_fmt = SUN8I_MIXER_FBFMT_ABGR4444,
 116                 .rgb = true,
 117                 .csc = SUN8I_CSC_MODE_OFF,
 118         },
 119         {
 120                 .drm_fmt = DRM_FORMAT_RGBA4444,
 121                 .de2_fmt = SUN8I_MIXER_FBFMT_RGBA4444,
 122                 .rgb = true,
 123                 .csc = SUN8I_CSC_MODE_OFF,
 124         },
 125         {
 126                 .drm_fmt = DRM_FORMAT_BGRA4444,
 127                 .de2_fmt = SUN8I_MIXER_FBFMT_BGRA4444,
 128                 .rgb = true,
 129                 .csc = SUN8I_CSC_MODE_OFF,
 130         },
 131         {
 132                 .drm_fmt = DRM_FORMAT_ARGB1555,
 133                 .de2_fmt = SUN8I_MIXER_FBFMT_ARGB1555,
 134                 .rgb = true,
 135                 .csc = SUN8I_CSC_MODE_OFF,
 136         },
 137         {
 138                 .drm_fmt = DRM_FORMAT_ABGR1555,
 139                 .de2_fmt = SUN8I_MIXER_FBFMT_ABGR1555,
 140                 .rgb = true,
 141                 .csc = SUN8I_CSC_MODE_OFF,
 142         },
 143         {
 144                 .drm_fmt = DRM_FORMAT_RGBA5551,
 145                 .de2_fmt = SUN8I_MIXER_FBFMT_RGBA5551,
 146                 .rgb = true,
 147                 .csc = SUN8I_CSC_MODE_OFF,
 148         },
 149         {
 150                 .drm_fmt = DRM_FORMAT_BGRA5551,
 151                 .de2_fmt = SUN8I_MIXER_FBFMT_BGRA5551,
 152                 .rgb = true,
 153                 .csc = SUN8I_CSC_MODE_OFF,
 154         },
 155         {
 156                 .drm_fmt = DRM_FORMAT_UYVY,
 157                 .de2_fmt = SUN8I_MIXER_FBFMT_UYVY,
 158                 .rgb = false,
 159                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 160         },
 161         {
 162                 .drm_fmt = DRM_FORMAT_VYUY,
 163                 .de2_fmt = SUN8I_MIXER_FBFMT_VYUY,
 164                 .rgb = false,
 165                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 166         },
 167         {
 168                 .drm_fmt = DRM_FORMAT_YUYV,
 169                 .de2_fmt = SUN8I_MIXER_FBFMT_YUYV,
 170                 .rgb = false,
 171                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 172         },
 173         {
 174                 .drm_fmt = DRM_FORMAT_YVYU,
 175                 .de2_fmt = SUN8I_MIXER_FBFMT_YVYU,
 176                 .rgb = false,
 177                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 178         },
 179         {
 180                 .drm_fmt = DRM_FORMAT_NV16,
 181                 .de2_fmt = SUN8I_MIXER_FBFMT_NV16,
 182                 .rgb = false,
 183                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 184         },
 185         {
 186                 .drm_fmt = DRM_FORMAT_NV61,
 187                 .de2_fmt = SUN8I_MIXER_FBFMT_NV61,
 188                 .rgb = false,
 189                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 190         },
 191         {
 192                 .drm_fmt = DRM_FORMAT_NV12,
 193                 .de2_fmt = SUN8I_MIXER_FBFMT_NV12,
 194                 .rgb = false,
 195                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 196         },
 197         {
 198                 .drm_fmt = DRM_FORMAT_NV21,
 199                 .de2_fmt = SUN8I_MIXER_FBFMT_NV21,
 200                 .rgb = false,
 201                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 202         },
 203         {
 204                 .drm_fmt = DRM_FORMAT_YUV444,
 205                 .de2_fmt = SUN8I_MIXER_FBFMT_RGB888,
 206                 .rgb = true,
 207                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 208         },
 209         {
 210                 .drm_fmt = DRM_FORMAT_YUV422,
 211                 .de2_fmt = SUN8I_MIXER_FBFMT_YUV422,
 212                 .rgb = false,
 213                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 214         },
 215         {
 216                 .drm_fmt = DRM_FORMAT_YUV420,
 217                 .de2_fmt = SUN8I_MIXER_FBFMT_YUV420,
 218                 .rgb = false,
 219                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 220         },
 221         {
 222                 .drm_fmt = DRM_FORMAT_YUV411,
 223                 .de2_fmt = SUN8I_MIXER_FBFMT_YUV411,
 224                 .rgb = false,
 225                 .csc = SUN8I_CSC_MODE_YUV2RGB,
 226         },
 227         {
 228                 .drm_fmt = DRM_FORMAT_YVU444,
 229                 .de2_fmt = SUN8I_MIXER_FBFMT_RGB888,
 230                 .rgb = true,
 231                 .csc = SUN8I_CSC_MODE_YVU2RGB,
 232         },
 233         {
 234                 .drm_fmt = DRM_FORMAT_YVU422,
 235                 .de2_fmt = SUN8I_MIXER_FBFMT_YUV422,
 236                 .rgb = false,
 237                 .csc = SUN8I_CSC_MODE_YVU2RGB,
 238         },
 239         {
 240                 .drm_fmt = DRM_FORMAT_YVU420,
 241                 .de2_fmt = SUN8I_MIXER_FBFMT_YUV420,
 242                 .rgb = false,
 243                 .csc = SUN8I_CSC_MODE_YVU2RGB,
 244         },
 245         {
 246                 .drm_fmt = DRM_FORMAT_YVU411,
 247                 .de2_fmt = SUN8I_MIXER_FBFMT_YUV411,
 248                 .rgb = false,
 249                 .csc = SUN8I_CSC_MODE_YVU2RGB,
 250         },
 251 };
 252
 253 const struct de2_fmt_info *sun8i_mixer_format_info(u32 format)
 254 {
 255         unsigned int i;
 256
 257         for (i = 0; i < ARRAY_SIZE(de2_formats); ++i)
 258                 if (de2_formats[i].drm_fmt == format)
 259                         return &de2_formats[i];
 260
 261         return NULL;
 262 }
 263
 264 static void sun8i_mixer_commit(struct sunxi_engine *engine)
 265 {
 266         DRM_DEBUG_DRIVER("Committing changes\n");
 267
 268         regmap_write(engine->regs, SUN8I_MIXER_GLOBAL_DBUFF,
 269                      SUN8I_MIXER_GLOBAL_DBUFF_ENABLE);
 270 }
 271
 272 static struct drm_plane **sun8i_layers_init(struct drm_device *drm,
 273                                             struct sunxi_engine *engine)
 274 {
 275         struct drm_plane **planes;
 276         struct sun8i_mixer *mixer = engine_to_sun8i_mixer(engine);
 277         int i;
 278
 279         planes = devm_kcalloc(drm->dev,
 280                               mixer->cfg->vi_num + mixer->cfg->ui_num + 1,
 281                               sizeof(*planes), GFP_KERNEL);
 282         if (!planes)
 283                 return ERR_PTR(-ENOMEM);
 284
 285         for (i = 0; i < mixer->cfg->vi_num; i++) {
 286                 struct sun8i_vi_layer *layer;
 287
 288                 layer = sun8i_vi_layer_init_one(drm, mixer, i);
 289                 if (IS_ERR(layer)) {
 290                         dev_err(drm->dev,
 291                                 "Couldn't initialize overlay plane\n");
 292                         return ERR_CAST(layer);
 293                 };
 294
 295                 planes[i] = &layer->plane;
 296         };
 297
 298         for (i = 0; i < mixer->cfg->ui_num; i++) {
 299                 struct sun8i_ui_layer *layer;
 300
 301                 layer = sun8i_ui_layer_init_one(drm, mixer, i);
 302                 if (IS_ERR(layer)) {
 303                         dev_err(drm->dev, "Couldn't initialize %s plane\n",
 304                                 i ? "overlay" : "primary");
 305                         return ERR_CAST(layer);
 306                 };
 307
 308                 planes[mixer->cfg->vi_num + i] = &layer->plane;
 309         };
 310
 311         return planes;
 312 }
 313
 314 static const struct sunxi_engine_ops sun8i_engine_ops = {
 315         .commit         = sun8i_mixer_commit,
 316         .layers_init    = sun8i_layers_init,
 317 };
 318
 319 static struct regmap_config sun8i_mixer_regmap_config = {
 320         .reg_bits       = 32,
 321         .val_bits       = 32,
 322         .reg_stride     = 4,
 323         .max_register   = 0xbfffc, /* guessed */
 324 };
 325
 326 static int sun8i_mixer_of_get_id(struct device_node *node)
 327 {
 328         struct device_node *port, *ep;
 329         int ret = -EINVAL;
 330
 331         /* output is port 1 */
 332         port = of_graph_get_port_by_id(node, 1);
 333         if (!port)
 334                 return -EINVAL;
 335
 336         /* try to find downstream endpoint */
 337         for_each_available_child_of_node(port, ep) {
 338                 struct device_node *remote;
 339                 u32 reg;
 340
 341                 remote = of_graph_get_remote_endpoint(ep);
 342                 if (!remote)
 343                         continue;
 344
 345                 ret = of_property_read_u32(remote, "reg", &reg);
 346                 if (!ret) {
 347                         of_node_put(remote);
 348                         of_node_put(ep);
 349                         of_node_put(port);
 350
 351                         return reg;
 352                 }
 353
 354                 of_node_put(remote);
 355         }
 356
 357         of_node_put(port);
 358
 359         return ret;
 360 }
 361
 362 static int sun8i_mixer_bind(struct device *dev, struct device *master,
 363                               void *data)
 364 {
 365         struct platform_device *pdev = to_platform_device(dev);
 366         struct drm_device *drm = data;
 367         struct sun4i_drv *drv = drm->dev_private;
 368         struct sun8i_mixer *mixer;
 369         struct resource *res;
 370         void __iomem *regs;
 371         int plane_cnt;
 372         int i, ret;
 373
 374         /*
 375          * The mixer uses single 32-bit register to store memory
 376          * addresses, so that it cannot deal with 64-bit memory
 377          * addresses.
 378          * Restrict the DMA mask so that the mixer won't be
 379          * allocated some memory that is too high.
 380          */
 381         ret = dma_set_mask(dev, DMA_BIT_MASK(32));
 382         if (ret) {
 383                 dev_err(dev, "Cannot do 32-bit DMA.\n");
 384                 return ret;
 385         }
 386
 387         mixer = devm_kzalloc(dev, sizeof(*mixer), GFP_KERNEL);
 388         if (!mixer)
 389                 return -ENOMEM;
 390         dev_set_drvdata(dev, mixer);
 391         mixer->engine.ops = &sun8i_engine_ops;
 392         mixer->engine.node = dev->of_node;
 393
 394         /*
 395          * While this function can fail, we shouldn't do anything
 396          * if this happens. Some early DE2 DT entries don't provide
 397          * mixer id but work nevertheless because matching between
 398          * TCON and mixer is done by comparing node pointers (old
 399          * way) instead comparing ids. If this function fails and
 400          * id is needed, it will fail during id matching anyway.
 401          */
 402         mixer->engine.id = sun8i_mixer_of_get_id(dev->of_node);
 403
 404         mixer->cfg = of_device_get_match_data(dev);
 405         if (!mixer->cfg)
 406                 return -EINVAL;
 407
 408         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 409         regs = devm_ioremap_resource(dev, res);
 410         if (IS_ERR(regs))
 411                 return PTR_ERR(regs);
 412
 413         mixer->engine.regs = devm_regmap_init_mmio(dev, regs,
 414                                                    &sun8i_mixer_regmap_config);
 415         if (IS_ERR(mixer->engine.regs)) {
 416                 dev_err(dev, "Couldn't create the mixer regmap\n");
 417                 return PTR_ERR(mixer->engine.regs);
 418         }
 419
 420         mixer->reset = devm_reset_control_get(dev, NULL);
 421         if (IS_ERR(mixer->reset)) {
 422                 dev_err(dev, "Couldn't get our reset line\n");
 423                 return PTR_ERR(mixer->reset);
 424         }
 425
 426         ret = reset_control_deassert(mixer->reset);
 427         if (ret) {
 428                 dev_err(dev, "Couldn't deassert our reset line\n");
 429                 return ret;
 430         }
 431
 432         mixer->bus_clk = devm_clk_get(dev, "bus");
 433         if (IS_ERR(mixer->bus_clk)) {
 434                 dev_err(dev, "Couldn't get the mixer bus clock\n");
 435                 ret = PTR_ERR(mixer->bus_clk);
 436                 goto err_assert_reset;
 437         }
 438         clk_prepare_enable(mixer->bus_clk);
 439
 440         mixer->mod_clk = devm_clk_get(dev, "mod");
 441         if (IS_ERR(mixer->mod_clk)) {
 442                 dev_err(dev, "Couldn't get the mixer module clock\n");
 443                 ret = PTR_ERR(mixer->mod_clk);
 444                 goto err_disable_bus_clk;
 445         }
 446
 447         /*
 448          * It seems that we need to enforce that rate for whatever
 449          * reason for the mixer to be functional. Make sure it's the
 450          * case.
 451          */
 452         if (mixer->cfg->mod_rate)
 453                 clk_set_rate(mixer->mod_clk, mixer->cfg->mod_rate);
 454
 455         clk_prepare_enable(mixer->mod_clk);
 456
 457         list_add_tail(&mixer->engine.list, &drv->engine_list);
 458
 459         /* Reset the registers */
 460         for (i = 0x0; i < 0x20000; i += 4)
 461                 regmap_write(mixer->engine.regs, i, 0);
 462
 463         /* Enable the mixer */
 464         regmap_write(mixer->engine.regs, SUN8I_MIXER_GLOBAL_CTL,
 465                      SUN8I_MIXER_GLOBAL_CTL_RT_EN);
 466
 467         /* Set background color to black */
 468         regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_BKCOLOR,
 469                      SUN8I_MIXER_BLEND_COLOR_BLACK);
 470
 471         /*
 472          * Set fill color of bottom plane to black. Generally not needed
 473          * except when VI plane is at bottom (zpos = 0) and enabled.
 474          */
 475         regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_PIPE_CTL,
 476                      SUN8I_MIXER_BLEND_PIPE_CTL_FC_EN(0));
 477         regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_ATTR_FCOLOR(0),
 478                      SUN8I_MIXER_BLEND_COLOR_BLACK);
 479
 480         plane_cnt = mixer->cfg->vi_num + mixer->cfg->ui_num;
 481         for (i = 0; i < plane_cnt; i++)
 482                 regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_MODE(i),
 483                              SUN8I_MIXER_BLEND_MODE_DEF);
 484
 485         regmap_update_bits(mixer->engine.regs, SUN8I_MIXER_BLEND_PIPE_CTL,
 486                            SUN8I_MIXER_BLEND_PIPE_CTL_EN_MSK, 0);
 487
 488         return 0;
 489
 490 err_disable_bus_clk:
 491         clk_disable_unprepare(mixer->bus_clk);
 492 err_assert_reset:
 493         reset_control_assert(mixer->reset);
 494         return ret;
 495 }
 496
 497 static void sun8i_mixer_unbind(struct device *dev, struct device *master,
 498                                  void *data)
 499 {
 500         struct sun8i_mixer *mixer = dev_get_drvdata(dev);
 501
 502         list_del(&mixer->engine.list);
 503
 504         clk_disable_unprepare(mixer->mod_clk);
 505         clk_disable_unprepare(mixer->bus_clk);
 506         reset_control_assert(mixer->reset);
 507 }
 508
 509 static const struct component_ops sun8i_mixer_ops = {
 510         .bind   = sun8i_mixer_bind,
 511         .unbind = sun8i_mixer_unbind,
 512 };
 513
 514 static int sun8i_mixer_probe(struct platform_device *pdev)
 515 {
 516         return component_add(&pdev->dev, &sun8i_mixer_ops);
 517 }
 518
 519 static int sun8i_mixer_remove(struct platform_device *pdev)
 520 {
 521         component_del(&pdev->dev, &sun8i_mixer_ops);
 522
 523         return 0;
 524 }
 525
 526 static const struct sun8i_mixer_cfg sun8i_a83t_mixer0_cfg = {
 527         .ccsc           = 0,
 528         .scaler_mask    = 0xf,
 529         .ui_num         = 3,
 530         .vi_num         = 1,
 531 };
 532
 533 static const struct sun8i_mixer_cfg sun8i_a83t_mixer1_cfg = {
 534         .ccsc           = 1,
 535         .scaler_mask    = 0x3,
 536         .ui_num         = 1,
 537         .vi_num         = 1,
 538 };
 539
 540 static const struct sun8i_mixer_cfg sun8i_h3_mixer0_cfg = {
 541         .ccsc           = 0,
 542         .mod_rate       = 432000000,
 543         .scaler_mask    = 0xf,
 544         .ui_num         = 3,
 545         .vi_num         = 1,
 546 };
 547
 548 static const struct sun8i_mixer_cfg sun8i_r40_mixer0_cfg = {
 549         .ccsc           = 0,
 550         .mod_rate       = 297000000,
 551         .scaler_mask    = 0xf,
 552         .ui_num         = 3,
 553         .vi_num         = 1,
 554 };
 555
 556 static const struct sun8i_mixer_cfg sun8i_r40_mixer1_cfg = {
 557         .ccsc           = 1,
 558         .mod_rate       = 297000000,
 559         .scaler_mask    = 0x3,
 560         .ui_num         = 1,
 561         .vi_num         = 1,
 562 };
 563
 564 static const struct sun8i_mixer_cfg sun8i_v3s_mixer_cfg = {
 565         .vi_num = 2,
 566         .ui_num = 1,
 567         .scaler_mask = 0x3,
 568         .ccsc = 0,
 569         .mod_rate = 150000000,
 570 };
 571
 572 static const struct of_device_id sun8i_mixer_of_table[] = {
 573         {
 574                 .compatible = "allwinner,sun8i-a83t-de2-mixer-0",
 575                 .data = &sun8i_a83t_mixer0_cfg,
 576         },
 577         {
 578                 .compatible = "allwinner,sun8i-a83t-de2-mixer-1",
 579                 .data = &sun8i_a83t_mixer1_cfg,
 580         },
 581         {
 582                 .compatible = "allwinner,sun8i-h3-de2-mixer-0",
 583                 .data = &sun8i_h3_mixer0_cfg,
 584         },
 585         {
 586                 .compatible = "allwinner,sun8i-r40-de2-mixer-0",
 587                 .data = &sun8i_r40_mixer0_cfg,
 588         },
 589         {
 590                 .compatible = "allwinner,sun8i-r40-de2-mixer-1",
 591                 .data = &sun8i_r40_mixer1_cfg,
 592         },
 593         {
 594                 .compatible = "allwinner,sun8i-v3s-de2-mixer",
 595                 .data = &sun8i_v3s_mixer_cfg,
 596         },
 597         { }
 598 };
 599 MODULE_DEVICE_TABLE(of, sun8i_mixer_of_table);
 600
 601 static struct platform_driver sun8i_mixer_platform_driver = {
 602         .probe          = sun8i_mixer_probe,
 603         .remove         = sun8i_mixer_remove,
 604         .driver         = {
 605                 .name           = "sun8i-mixer",
 606                 .of_match_table = sun8i_mixer_of_table,
 607         },
 608 };
 609 module_platform_driver(sun8i_mixer_platform_driver);
 610
 611 MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>");
 612 MODULE_DESCRIPTION("Allwinner DE2 Mixer driver");
 613 MODULE_LICENSE("GPL");