drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
   4  */
   5
   6 #include <linux/clk.h>
   7 #include <linux/mfd/syscon.h>
   8 #include <linux/module.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/phy/phy.h>
  11 #include <linux/regmap.h>
  12
  13 #include <drm/drm_of.h>
  14 #include <drm/drmP.h>
  15 #include <drm/drm_edid.h>
  16 #include <drm/drm_probe_helper.h>
  17 #include <drm/bridge/dw_hdmi.h>
  18
  19 #include "rockchip_drm_drv.h"
  20 #include "rockchip_drm_vop.h"
  21
  22 #define RK3228_GRF_SOC_CON2             0x0408
  23 #define RK3228_HDMI_SDAIN_MSK           BIT(14)
  24 #define RK3228_HDMI_SCLIN_MSK           BIT(13)
  25 #define RK3228_GRF_SOC_CON6             0x0418
  26 #define RK3228_HDMI_HPD_VSEL            BIT(6)
  27 #define RK3228_HDMI_SDA_VSEL            BIT(5)
  28 #define RK3228_HDMI_SCL_VSEL            BIT(4)
  29
  30 #define RK3288_GRF_SOC_CON6             0x025C
  31 #define RK3288_HDMI_LCDC_SEL            BIT(4)
  32 #define RK3328_GRF_SOC_CON2             0x0408
  33
  34 #define RK3328_HDMI_SDAIN_MSK           BIT(11)
  35 #define RK3328_HDMI_SCLIN_MSK           BIT(10)
  36 #define RK3328_HDMI_HPD_IOE             BIT(2)
  37 #define RK3328_GRF_SOC_CON3             0x040c
  38 /* need to be unset if hdmi or i2c should control voltage */
  39 #define RK3328_HDMI_SDA5V_GRF           BIT(15)
  40 #define RK3328_HDMI_SCL5V_GRF           BIT(14)
  41 #define RK3328_HDMI_HPD5V_GRF           BIT(13)
  42 #define RK3328_HDMI_CEC5V_GRF           BIT(12)
  43 #define RK3328_GRF_SOC_CON4             0x0410
  44 #define RK3328_HDMI_HPD_SARADC          BIT(13)
  45 #define RK3328_HDMI_CEC_5V              BIT(11)
  46 #define RK3328_HDMI_SDA_5V              BIT(10)
  47 #define RK3328_HDMI_SCL_5V              BIT(9)
  48 #define RK3328_HDMI_HPD_5V              BIT(8)
  49
  50 #define RK3399_GRF_SOC_CON20            0x6250
  51 #define RK3399_HDMI_LCDC_SEL            BIT(6)
  52
  53 #define HIWORD_UPDATE(val, mask)        (val | (mask) << 16)
  54
  55 /**
  56  * struct rockchip_hdmi_chip_data - splite the grf setting of kind of chips
  57  * @lcdsel_grf_reg: grf register offset of lcdc select
  58  * @lcdsel_big: reg value of selecting vop big for HDMI
  59  * @lcdsel_lit: reg value of selecting vop little for HDMI
  60  */
  61 struct rockchip_hdmi_chip_data {
  62         int     lcdsel_grf_reg;
  63         u32     lcdsel_big;
  64         u32     lcdsel_lit;
  65 };
  66
  67 struct rockchip_hdmi {
  68         struct device *dev;
  69         struct regmap *regmap;
  70         struct drm_encoder encoder;
  71         const struct rockchip_hdmi_chip_data *chip_data;
  72         struct clk *vpll_clk;
  73         struct clk *grf_clk;
  74         struct dw_hdmi *hdmi;
  75         struct phy *phy;
  76 };
  77
  78 #define to_rockchip_hdmi(x)     container_of(x, struct rockchip_hdmi, x)
  79
  80 static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = {
  81         {
  82                 27000000, {
  83                         { 0x00b3, 0x0000},
  84                         { 0x2153, 0x0000},
  85                         { 0x40f3, 0x0000}
  86                 },
  87         }, {
  88                 36000000, {
  89                         { 0x00b3, 0x0000},
  90                         { 0x2153, 0x0000},
  91                         { 0x40f3, 0x0000}
  92                 },
  93         }, {
  94                 40000000, {
  95                         { 0x00b3, 0x0000},
  96                         { 0x2153, 0x0000},
  97                         { 0x40f3, 0x0000}
  98                 },
  99         }, {
 100                 54000000, {
 101                         { 0x0072, 0x0001},
 102                         { 0x2142, 0x0001},
 103                         { 0x40a2, 0x0001},
 104                 },
 105         }, {
 106                 65000000, {
 107                         { 0x0072, 0x0001},
 108                         { 0x2142, 0x0001},
 109                         { 0x40a2, 0x0001},
 110                 },
 111         }, {
 112                 66000000, {
 113                         { 0x013e, 0x0003},
 114                         { 0x217e, 0x0002},
 115                         { 0x4061, 0x0002}
 116                 },
 117         }, {
 118                 74250000, {
 119                         { 0x0072, 0x0001},
 120                         { 0x2145, 0x0002},
 121                         { 0x4061, 0x0002}
 122                 },
 123         }, {
 124                 83500000, {
 125                         { 0x0072, 0x0001},
 126                 },
 127         }, {
 128                 108000000, {
 129                         { 0x0051, 0x0002},
 130                         { 0x2145, 0x0002},
 131                         { 0x4061, 0x0002}
 132                 },
 133         }, {
 134                 106500000, {
 135                         { 0x0051, 0x0002},
 136                         { 0x2145, 0x0002},
 137                         { 0x4061, 0x0002}
 138                 },
 139         }, {
 140                 146250000, {
 141                         { 0x0051, 0x0002},
 142                         { 0x2145, 0x0002},
 143                         { 0x4061, 0x0002}
 144                 },
 145         }, {
 146                 148500000, {
 147                         { 0x0051, 0x0003},
 148                         { 0x214c, 0x0003},
 149                         { 0x4064, 0x0003}
 150                 },
 151         }, {
 152                 ~0UL, {
 153                         { 0x00a0, 0x000a },
 154                         { 0x2001, 0x000f },
 155                         { 0x4002, 0x000f },
 156                 },
 157         }
 158 };
 159
 160 static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = {
 161         /*      pixelclk    bpp8    bpp10   bpp12 */
 162         {
 163                 40000000,  { 0x0018, 0x0018, 0x0018 },
 164         }, {
 165                 65000000,  { 0x0028, 0x0028, 0x0028 },
 166         }, {
 167                 66000000,  { 0x0038, 0x0038, 0x0038 },
 168         }, {
 169                 74250000,  { 0x0028, 0x0038, 0x0038 },
 170         }, {
 171                 83500000,  { 0x0028, 0x0038, 0x0038 },
 172         }, {
 173                 146250000, { 0x0038, 0x0038, 0x0038 },
 174         }, {
 175                 148500000, { 0x0000, 0x0038, 0x0038 },
 176         }, {
 177                 ~0UL,      { 0x0000, 0x0000, 0x0000},
 178         }
 179 };
 180
 181 static const struct dw_hdmi_phy_config rockchip_phy_config[] = {
 182         /*pixelclk   symbol   term   vlev*/
 183         { 74250000,  0x8009, 0x0004, 0x0272},
 184         { 148500000, 0x802b, 0x0004, 0x028d},
 185         { 297000000, 0x8039, 0x0005, 0x028d},
 186         { ~0UL,      0x0000, 0x0000, 0x0000}
 187 };
 188
 189 static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
 190 {
 191         struct device_node *np = hdmi->dev->of_node;
 192
 193         hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
 194         if (IS_ERR(hdmi->regmap)) {
 195                 DRM_DEV_ERROR(hdmi->dev, "Unable to get rockchip,grf\n");
 196                 return PTR_ERR(hdmi->regmap);
 197         }
 198
 199         hdmi->vpll_clk = devm_clk_get(hdmi->dev, "vpll");
 200         if (PTR_ERR(hdmi->vpll_clk) == -ENOENT) {
 201                 hdmi->vpll_clk = NULL;
 202         } else if (PTR_ERR(hdmi->vpll_clk) == -EPROBE_DEFER) {
 203                 return -EPROBE_DEFER;
 204         } else if (IS_ERR(hdmi->vpll_clk)) {
 205                 DRM_DEV_ERROR(hdmi->dev, "failed to get grf clock\n");
 206                 return PTR_ERR(hdmi->vpll_clk);
 207         }
 208
 209         hdmi->grf_clk = devm_clk_get(hdmi->dev, "grf");
 210         if (PTR_ERR(hdmi->grf_clk) == -ENOENT) {
 211                 hdmi->grf_clk = NULL;
 212         } else if (PTR_ERR(hdmi->grf_clk) == -EPROBE_DEFER) {
 213                 return -EPROBE_DEFER;
 214         } else if (IS_ERR(hdmi->grf_clk)) {
 215                 DRM_DEV_ERROR(hdmi->dev, "failed to get grf clock\n");
 216                 return PTR_ERR(hdmi->grf_clk);
 217         }
 218
 219         return 0;
 220 }
 221
 222 static enum drm_mode_status
 223 dw_hdmi_rockchip_mode_valid(struct drm_connector *connector,
 224                             const struct drm_display_mode *mode)
 225 {
 226         const struct dw_hdmi_mpll_config *mpll_cfg = rockchip_mpll_cfg;
 227         int pclk = mode->clock * 1000;
 228         bool valid = false;
 229         int i;
 230
 231         for (i = 0; mpll_cfg[i].mpixelclock != (~0UL); i++) {
 232                 if (pclk == mpll_cfg[i].mpixelclock) {
 233                         valid = true;
 234                         break;
 235                 }
 236         }
 237
 238         return (valid) ? MODE_OK : MODE_BAD;
 239 }
 240
 241 static const struct drm_encoder_funcs dw_hdmi_rockchip_encoder_funcs = {
 242         .destroy = drm_encoder_cleanup,
 243 };
 244
 245 static void dw_hdmi_rockchip_encoder_disable(struct drm_encoder *encoder)
 246 {
 247 }
 248
 249 static bool
 250 dw_hdmi_rockchip_encoder_mode_fixup(struct drm_encoder *encoder,
 251                                     const struct drm_display_mode *mode,
 252                                     struct drm_display_mode *adj_mode)
 253 {
 254         return true;
 255 }
 256
 257 static void dw_hdmi_rockchip_encoder_mode_set(struct drm_encoder *encoder,
 258                                               struct drm_display_mode *mode,
 259                                               struct drm_display_mode *adj_mode)
 260 {
 261         struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
 262
 263         clk_set_rate(hdmi->vpll_clk, adj_mode->clock * 1000);
 264 }
 265
 266 static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder)
 267 {
 268         struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
 269         u32 val;
 270         int ret;
 271
 272         if (hdmi->chip_data->lcdsel_grf_reg < 0)
 273                 return;
 274
 275         ret = drm_of_encoder_active_endpoint_id(hdmi->dev->of_node, encoder);
 276         if (ret)
 277                 val = hdmi->chip_data->lcdsel_lit;
 278         else
 279                 val = hdmi->chip_data->lcdsel_big;
 280
 281         ret = clk_prepare_enable(hdmi->grf_clk);
 282         if (ret < 0) {
 283                 DRM_DEV_ERROR(hdmi->dev, "failed to enable grfclk %d\n", ret);
 284                 return;
 285         }
 286
 287         ret = regmap_write(hdmi->regmap, hdmi->chip_data->lcdsel_grf_reg, val);
 288         if (ret != 0)
 289                 DRM_DEV_ERROR(hdmi->dev, "Could not write to GRF: %d\n", ret);
 290
 291         clk_disable_unprepare(hdmi->grf_clk);
 292         DRM_DEV_DEBUG(hdmi->dev, "vop %s output to hdmi\n",
 293                       ret ? "LIT" : "BIG");
 294 }
 295
 296 static int
 297 dw_hdmi_rockchip_encoder_atomic_check(struct drm_encoder *encoder,
 298                                       struct drm_crtc_state *crtc_state,
 299                                       struct drm_connector_state *conn_state)
 300 {
 301         struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
 302
 303         s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
 304         s->output_type = DRM_MODE_CONNECTOR_HDMIA;
 305
 306         return 0;
 307 }
 308
 309 static const struct drm_encoder_helper_funcs dw_hdmi_rockchip_encoder_helper_funcs = {
 310         .mode_fixup = dw_hdmi_rockchip_encoder_mode_fixup,
 311         .mode_set   = dw_hdmi_rockchip_encoder_mode_set,
 312         .enable     = dw_hdmi_rockchip_encoder_enable,
 313         .disable    = dw_hdmi_rockchip_encoder_disable,
 314         .atomic_check = dw_hdmi_rockchip_encoder_atomic_check,
 315 };
 316
 317 static int dw_hdmi_rockchip_genphy_init(struct dw_hdmi *dw_hdmi, void *data,
 318                              struct drm_display_mode *mode)
 319 {
 320         struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
 321
 322         return phy_power_on(hdmi->phy);
 323 }
 324
 325 static void dw_hdmi_rockchip_genphy_disable(struct dw_hdmi *dw_hdmi, void *data)
 326 {
 327         struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
 328
 329         phy_power_off(hdmi->phy);
 330 }
 331
 332 static void dw_hdmi_rk3228_setup_hpd(struct dw_hdmi *dw_hdmi, void *data)
 333 {
 334         struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
 335
 336         dw_hdmi_phy_setup_hpd(dw_hdmi, data);
 337
 338         regmap_write(hdmi->regmap,
 339                 RK3228_GRF_SOC_CON6,
 340                 HIWORD_UPDATE(RK3228_HDMI_HPD_VSEL | RK3228_HDMI_SDA_VSEL |
 341                               RK3228_HDMI_SCL_VSEL,
 342                               RK3228_HDMI_HPD_VSEL | RK3228_HDMI_SDA_VSEL |
 343                               RK3228_HDMI_SCL_VSEL));
 344
 345         regmap_write(hdmi->regmap,
 346                 RK3228_GRF_SOC_CON2,
 347                 HIWORD_UPDATE(RK3228_HDMI_SDAIN_MSK | RK3228_HDMI_SCLIN_MSK,
 348                               RK3228_HDMI_SDAIN_MSK | RK3228_HDMI_SCLIN_MSK));
 349 }
 350
 351 static enum drm_connector_status
 352 dw_hdmi_rk3328_read_hpd(struct dw_hdmi *dw_hdmi, void *data)
 353 {
 354         struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
 355         enum drm_connector_status status;
 356
 357         status = dw_hdmi_phy_read_hpd(dw_hdmi, data);
 358
 359         if (status == connector_status_connected)
 360                 regmap_write(hdmi->regmap,
 361                         RK3328_GRF_SOC_CON4,
 362                         HIWORD_UPDATE(RK3328_HDMI_SDA_5V | RK3328_HDMI_SCL_5V,
 363                                       RK3328_HDMI_SDA_5V | RK3328_HDMI_SCL_5V));
 364         else
 365                 regmap_write(hdmi->regmap,
 366                         RK3328_GRF_SOC_CON4,
 367                         HIWORD_UPDATE(0, RK3328_HDMI_SDA_5V |
 368                                          RK3328_HDMI_SCL_5V));
 369         return status;
 370 }
 371
 372 static void dw_hdmi_rk3328_setup_hpd(struct dw_hdmi *dw_hdmi, void *data)
 373 {
 374         struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
 375
 376         dw_hdmi_phy_setup_hpd(dw_hdmi, data);
 377
 378         /* Enable and map pins to 3V grf-controlled io-voltage */
 379         regmap_write(hdmi->regmap,
 380                 RK3328_GRF_SOC_CON4,
 381                 HIWORD_UPDATE(0, RK3328_HDMI_HPD_SARADC | RK3328_HDMI_CEC_5V |
 382                                  RK3328_HDMI_SDA_5V | RK3328_HDMI_SCL_5V |
 383                                  RK3328_HDMI_HPD_5V));
 384         regmap_write(hdmi->regmap,
 385                 RK3328_GRF_SOC_CON3,
 386                 HIWORD_UPDATE(0, RK3328_HDMI_SDA5V_GRF | RK3328_HDMI_SCL5V_GRF |
 387                                  RK3328_HDMI_HPD5V_GRF |
 388                                  RK3328_HDMI_CEC5V_GRF));
 389         regmap_write(hdmi->regmap,
 390                 RK3328_GRF_SOC_CON2,
 391                 HIWORD_UPDATE(RK3328_HDMI_SDAIN_MSK | RK3328_HDMI_SCLIN_MSK,
 392                               RK3328_HDMI_SDAIN_MSK | RK3328_HDMI_SCLIN_MSK |
 393                               RK3328_HDMI_HPD_IOE));
 394 }
 395
 396 static const struct dw_hdmi_phy_ops rk3228_hdmi_phy_ops = {
 397         .init           = dw_hdmi_rockchip_genphy_init,
 398         .disable        = dw_hdmi_rockchip_genphy_disable,
 399         .read_hpd       = dw_hdmi_phy_read_hpd,
 400         .update_hpd     = dw_hdmi_phy_update_hpd,
 401         .setup_hpd      = dw_hdmi_rk3228_setup_hpd,
 402 };
 403
 404 static struct rockchip_hdmi_chip_data rk3228_chip_data = {
 405         .lcdsel_grf_reg = -1,
 406 };
 407
 408 static const struct dw_hdmi_plat_data rk3228_hdmi_drv_data = {
 409         .mode_valid = dw_hdmi_rockchip_mode_valid,
 410         .mpll_cfg = rockchip_mpll_cfg,
 411         .cur_ctr = rockchip_cur_ctr,
 412         .phy_config = rockchip_phy_config,
 413         .phy_data = &rk3228_chip_data,
 414         .phy_ops = &rk3228_hdmi_phy_ops,
 415         .phy_name = "inno_dw_hdmi_phy2",
 416         .phy_force_vendor = true,
 417 };
 418
 419 static struct rockchip_hdmi_chip_data rk3288_chip_data = {
 420         .lcdsel_grf_reg = RK3288_GRF_SOC_CON6,
 421         .lcdsel_big = HIWORD_UPDATE(0, RK3288_HDMI_LCDC_SEL),
 422         .lcdsel_lit = HIWORD_UPDATE(RK3288_HDMI_LCDC_SEL, RK3288_HDMI_LCDC_SEL),
 423 };
 424
 425 static const struct dw_hdmi_plat_data rk3288_hdmi_drv_data = {
 426         .mode_valid = dw_hdmi_rockchip_mode_valid,
 427         .mpll_cfg   = rockchip_mpll_cfg,
 428         .cur_ctr    = rockchip_cur_ctr,
 429         .phy_config = rockchip_phy_config,
 430         .phy_data = &rk3288_chip_data,
 431 };
 432
 433 static const struct dw_hdmi_phy_ops rk3328_hdmi_phy_ops = {
 434         .init           = dw_hdmi_rockchip_genphy_init,
 435         .disable        = dw_hdmi_rockchip_genphy_disable,
 436         .read_hpd       = dw_hdmi_rk3328_read_hpd,
 437         .update_hpd     = dw_hdmi_phy_update_hpd,
 438         .setup_hpd      = dw_hdmi_rk3328_setup_hpd,
 439 };
 440
 441 static struct rockchip_hdmi_chip_data rk3328_chip_data = {
 442         .lcdsel_grf_reg = -1,
 443 };
 444
 445 static const struct dw_hdmi_plat_data rk3328_hdmi_drv_data = {
 446         .mode_valid = dw_hdmi_rockchip_mode_valid,
 447         .mpll_cfg = rockchip_mpll_cfg,
 448         .cur_ctr = rockchip_cur_ctr,
 449         .phy_config = rockchip_phy_config,
 450         .phy_data = &rk3328_chip_data,
 451         .phy_ops = &rk3328_hdmi_phy_ops,
 452         .phy_name = "inno_dw_hdmi_phy2",
 453         .phy_force_vendor = true,
 454 };
 455
 456 static struct rockchip_hdmi_chip_data rk3399_chip_data = {
 457         .lcdsel_grf_reg = RK3399_GRF_SOC_CON20,
 458         .lcdsel_big = HIWORD_UPDATE(0, RK3399_HDMI_LCDC_SEL),
 459         .lcdsel_lit = HIWORD_UPDATE(RK3399_HDMI_LCDC_SEL, RK3399_HDMI_LCDC_SEL),
 460 };
 461
 462 static const struct dw_hdmi_plat_data rk3399_hdmi_drv_data = {
 463         .mode_valid = dw_hdmi_rockchip_mode_valid,
 464         .mpll_cfg   = rockchip_mpll_cfg,
 465         .cur_ctr    = rockchip_cur_ctr,
 466         .phy_config = rockchip_phy_config,
 467         .phy_data = &rk3399_chip_data,
 468 };
 469
 470 static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = {
 471         { .compatible = "rockchip,rk3228-dw-hdmi",
 472           .data = &rk3228_hdmi_drv_data
 473         },
 474         { .compatible = "rockchip,rk3288-dw-hdmi",
 475           .data = &rk3288_hdmi_drv_data
 476         },
 477         { .compatible = "rockchip,rk3328-dw-hdmi",
 478           .data = &rk3328_hdmi_drv_data
 479         },
 480         { .compatible = "rockchip,rk3399-dw-hdmi",
 481           .data = &rk3399_hdmi_drv_data
 482         },
 483         {},
 484 };
 485 MODULE_DEVICE_TABLE(of, dw_hdmi_rockchip_dt_ids);
 486
 487 static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
 488                                  void *data)
 489 {
 490         struct platform_device *pdev = to_platform_device(dev);
 491         struct dw_hdmi_plat_data *plat_data;
 492         const struct of_device_id *match;
 493         struct drm_device *drm = data;
 494         struct drm_encoder *encoder;
 495         struct rockchip_hdmi *hdmi;
 496         int ret;
 497
 498         if (!pdev->dev.of_node)
 499                 return -ENODEV;
 500
 501         hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
 502         if (!hdmi)
 503                 return -ENOMEM;
 504
 505         match = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node);
 506         plat_data = devm_kmemdup(&pdev->dev, match->data,
 507                                              sizeof(*plat_data), GFP_KERNEL);
 508         if (!plat_data)
 509                 return -ENOMEM;
 510
 511         hdmi->dev = &pdev->dev;
 512         hdmi->chip_data = plat_data->phy_data;
 513         plat_data->phy_data = hdmi;
 514         encoder = &hdmi->encoder;
 515
 516         encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
 517         /*
 518          * If we failed to find the CRTC(s) which this encoder is
 519          * supposed to be connected to, it's because the CRTC has
 520          * not been registered yet.  Defer probing, and hope that
 521          * the required CRTC is added later.
 522          */
 523         if (encoder->possible_crtcs == 0)
 524                 return -EPROBE_DEFER;
 525
 526         ret = rockchip_hdmi_parse_dt(hdmi);
 527         if (ret) {
 528                 DRM_DEV_ERROR(hdmi->dev, "Unable to parse OF data\n");
 529                 return ret;
 530         }
 531
 532         ret = clk_prepare_enable(hdmi->vpll_clk);
 533         if (ret) {
 534                 DRM_DEV_ERROR(hdmi->dev, "Failed to enable HDMI vpll: %d\n",
 535                               ret);
 536                 return ret;
 537         }
 538
 539         hdmi->phy = devm_phy_optional_get(dev, "hdmi");
 540         if (IS_ERR(hdmi->phy)) {
 541                 ret = PTR_ERR(hdmi->phy);
 542                 if (ret != -EPROBE_DEFER)
 543                         DRM_DEV_ERROR(hdmi->dev, "failed to get phy\n");
 544                 return ret;
 545         }
 546
 547         drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs);
 548         drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs,
 549                          DRM_MODE_ENCODER_TMDS, NULL);
 550
 551         platform_set_drvdata(pdev, hdmi);
 552
 553         hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
 554
 555         /*
 556          * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
 557          * which would have called the encoder cleanup.  Do it manually.
 558          */
 559         if (IS_ERR(hdmi->hdmi)) {
 560                 ret = PTR_ERR(hdmi->hdmi);
 561                 drm_encoder_cleanup(encoder);
 562                 clk_disable_unprepare(hdmi->vpll_clk);
 563         }
 564
 565         return ret;
 566 }
 567
 568 static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
 569                                     void *data)
 570 {
 571         struct rockchip_hdmi *hdmi = dev_get_drvdata(dev);
 572
 573         dw_hdmi_unbind(hdmi->hdmi);
 574         clk_disable_unprepare(hdmi->vpll_clk);
 575 }
 576
 577 static const struct component_ops dw_hdmi_rockchip_ops = {
 578         .bind   = dw_hdmi_rockchip_bind,
 579         .unbind = dw_hdmi_rockchip_unbind,
 580 };
 581
 582 static int dw_hdmi_rockchip_probe(struct platform_device *pdev)
 583 {
 584         return component_add(&pdev->dev, &dw_hdmi_rockchip_ops);
 585 }
 586
 587 static int dw_hdmi_rockchip_remove(struct platform_device *pdev)
 588 {
 589         component_del(&pdev->dev, &dw_hdmi_rockchip_ops);
 590
 591         return 0;
 592 }
 593
 594 static int __maybe_unused dw_hdmi_rockchip_resume(struct device *dev)
 595 {
 596         struct rockchip_hdmi *hdmi = dev_get_drvdata(dev);
 597
 598         dw_hdmi_resume(hdmi->hdmi);
 599
 600         return 0;
 601 }
 602
 603 static const struct dev_pm_ops dw_hdmi_rockchip_pm = {
 604         SET_SYSTEM_SLEEP_PM_OPS(NULL, dw_hdmi_rockchip_resume)
 605 };
 606
 607 struct platform_driver dw_hdmi_rockchip_pltfm_driver = {
 608         .probe  = dw_hdmi_rockchip_probe,
 609         .remove = dw_hdmi_rockchip_remove,
 610         .driver = {
 611                 .name = "dwhdmi-rockchip",
 612                 .pm = &dw_hdmi_rockchip_pm,
 613                 .of_match_table = dw_hdmi_rockchip_dt_ids,
 614         },
 615 };