1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd 4 * Author: 5 * Mark Yao <mark.yao@rock-chips.com> 6 * Sandy Huang <hjc@rock-chips.com> 7 */ 8 9 #include <linux/clk.h> 10 #include <linux/component.h> 11 #include <linux/mfd/syscon.h> 12 #include <linux/of_graph.h> 13 #include <linux/phy/phy.h> 14 #include <linux/pinctrl/devinfo.h> 15 #include <linux/platform_device.h> 16 #include <linux/pm_runtime.h> 17 #include <linux/regmap.h> 18 #include <linux/reset.h> 19 20 #include <drm/drm_atomic_helper.h> 21 #include <drm/drm_bridge.h> 22 #include <drm/drm_bridge_connector.h> 23 #include <drm/dp/drm_dp_helper.h> 24 #include <drm/drm_of.h> 25 #include <drm/drm_panel.h> 26 #include <drm/drm_probe_helper.h> 27 #include <drm/drm_simple_kms_helper.h> 28 29 #include "rockchip_drm_drv.h" 30 #include "rockchip_drm_vop.h" 31 #include "rockchip_lvds.h" 32 33 #define DISPLAY_OUTPUT_RGB 0 34 #define DISPLAY_OUTPUT_LVDS 1 35 #define DISPLAY_OUTPUT_DUAL_LVDS 2 36 37 struct rockchip_lvds; 38 39 #define connector_to_lvds(c) \ 40 container_of(c, struct rockchip_lvds, connector) 41 42 #define encoder_to_lvds(c) \ 43 container_of(c, struct rockchip_lvds, encoder) 44 45 /** 46 * struct rockchip_lvds_soc_data - rockchip lvds Soc private data 47 * @probe: LVDS platform probe function 48 * @helper_funcs: LVDS connector helper functions 49 */ 50 struct rockchip_lvds_soc_data { 51 int (*probe)(struct platform_device *pdev, struct rockchip_lvds *lvds); 52 const struct drm_encoder_helper_funcs *helper_funcs; 53 }; 54 55 struct rockchip_lvds { 56 struct device *dev; 57 void __iomem *regs; 58 struct regmap *grf; 59 struct clk *pclk; 60 struct phy *dphy; 61 const struct rockchip_lvds_soc_data *soc_data; 62 int output; /* rgb lvds or dual lvds output */ 63 int format; /* vesa or jeida format */ 64 struct drm_device *drm_dev; 65 struct drm_panel *panel; 66 struct drm_bridge *bridge; 67 struct drm_connector connector; 68 struct drm_encoder encoder; 69 struct dev_pin_info *pins; 70 }; 71 72 static inline void rk3288_writel(struct rockchip_lvds *lvds, u32 offset, 73 u32 val) 74 { 75 writel_relaxed(val, lvds->regs + offset); 76 if (lvds->output == DISPLAY_OUTPUT_LVDS) 77 return; 78 writel_relaxed(val, lvds->regs + offset + RK3288_LVDS_CH1_OFFSET); 79 } 80 81 static inline int rockchip_lvds_name_to_format(const char *s) 82 { 83 if (strncmp(s, "jeida-18", 8) == 0) 84 return LVDS_JEIDA_18; 85 else if (strncmp(s, "jeida-24", 8) == 0) 86 return LVDS_JEIDA_24; 87 else if (strncmp(s, "vesa-24", 7) == 0) 88 return LVDS_VESA_24; 89 90 return -EINVAL; 91 } 92 93 static inline int rockchip_lvds_name_to_output(const char *s) 94 { 95 if (strncmp(s, "rgb", 3) == 0) 96 return DISPLAY_OUTPUT_RGB; 97 else if (strncmp(s, "lvds", 4) == 0) 98 return DISPLAY_OUTPUT_LVDS; 99 else if (strncmp(s, "duallvds", 8) == 0) 100 return DISPLAY_OUTPUT_DUAL_LVDS; 101 102 return -EINVAL; 103 } 104 105 static const struct drm_connector_funcs rockchip_lvds_connector_funcs = { 106 .fill_modes = drm_helper_probe_single_connector_modes, 107 .destroy = drm_connector_cleanup, 108 .reset = drm_atomic_helper_connector_reset, 109 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 110 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 111 }; 112 113 static int rockchip_lvds_connector_get_modes(struct drm_connector *connector) 114 { 115 struct rockchip_lvds *lvds = connector_to_lvds(connector); 116 struct drm_panel *panel = lvds->panel; 117 118 return drm_panel_get_modes(panel, connector); 119 } 120 121 static const 122 struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = { 123 .get_modes = rockchip_lvds_connector_get_modes, 124 }; 125 126 static int 127 rockchip_lvds_encoder_atomic_check(struct drm_encoder *encoder, 128 struct drm_crtc_state *crtc_state, 129 struct drm_connector_state *conn_state) 130 { 131 struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state); 132 133 s->output_mode = ROCKCHIP_OUT_MODE_P888; 134 s->output_type = DRM_MODE_CONNECTOR_LVDS; 135 136 return 0; 137 } 138 139 static int rk3288_lvds_poweron(struct rockchip_lvds *lvds) 140 { 141 int ret; 142 u32 val; 143 144 ret = clk_enable(lvds->pclk); 145 if (ret < 0) { 146 DRM_DEV_ERROR(lvds->dev, "failed to enable lvds pclk %d\n", ret); 147 return ret; 148 } 149 ret = pm_runtime_get_sync(lvds->dev); 150 if (ret < 0) { 151 DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret); 152 clk_disable(lvds->pclk); 153 return ret; 154 } 155 val = RK3288_LVDS_CH0_REG0_LANE4_EN | RK3288_LVDS_CH0_REG0_LANE3_EN | 156 RK3288_LVDS_CH0_REG0_LANE2_EN | RK3288_LVDS_CH0_REG0_LANE1_EN | 157 RK3288_LVDS_CH0_REG0_LANE0_EN; 158 if (lvds->output == DISPLAY_OUTPUT_RGB) { 159 val |= RK3288_LVDS_CH0_REG0_TTL_EN | 160 RK3288_LVDS_CH0_REG0_LANECK_EN; 161 rk3288_writel(lvds, RK3288_LVDS_CH0_REG0, val); 162 rk3288_writel(lvds, RK3288_LVDS_CH0_REG2, 163 RK3288_LVDS_PLL_FBDIV_REG2(0x46)); 164 rk3288_writel(lvds, RK3288_LVDS_CH0_REG4, 165 RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE | 166 RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE | 167 RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE | 168 RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE | 169 RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE | 170 RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE); 171 rk3288_writel(lvds, RK3288_LVDS_CH0_REG5, 172 RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA | 173 RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA | 174 RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA | 175 RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA | 176 RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA | 177 RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA); 178 } else { 179 val |= RK3288_LVDS_CH0_REG0_LVDS_EN | 180 RK3288_LVDS_CH0_REG0_LANECK_EN; 181 rk3288_writel(lvds, RK3288_LVDS_CH0_REG0, val); 182 rk3288_writel(lvds, RK3288_LVDS_CH0_REG1, 183 RK3288_LVDS_CH0_REG1_LANECK_BIAS | 184 RK3288_LVDS_CH0_REG1_LANE4_BIAS | 185 RK3288_LVDS_CH0_REG1_LANE3_BIAS | 186 RK3288_LVDS_CH0_REG1_LANE2_BIAS | 187 RK3288_LVDS_CH0_REG1_LANE1_BIAS | 188 RK3288_LVDS_CH0_REG1_LANE0_BIAS); 189 rk3288_writel(lvds, RK3288_LVDS_CH0_REG2, 190 RK3288_LVDS_CH0_REG2_RESERVE_ON | 191 RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE | 192 RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE | 193 RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE | 194 RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE | 195 RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE | 196 RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE | 197 RK3288_LVDS_PLL_FBDIV_REG2(0x46)); 198 rk3288_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00); 199 rk3288_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00); 200 } 201 rk3288_writel(lvds, RK3288_LVDS_CH0_REG3, 202 RK3288_LVDS_PLL_FBDIV_REG3(0x46)); 203 rk3288_writel(lvds, RK3288_LVDS_CH0_REGD, 204 RK3288_LVDS_PLL_PREDIV_REGD(0x0a)); 205 rk3288_writel(lvds, RK3288_LVDS_CH0_REG20, 206 RK3288_LVDS_CH0_REG20_LSB); 207 208 rk3288_writel(lvds, RK3288_LVDS_CFG_REGC, 209 RK3288_LVDS_CFG_REGC_PLL_ENABLE); 210 rk3288_writel(lvds, RK3288_LVDS_CFG_REG21, 211 RK3288_LVDS_CFG_REG21_TX_ENABLE); 212 213 return 0; 214 } 215 216 static void rk3288_lvds_poweroff(struct rockchip_lvds *lvds) 217 { 218 int ret; 219 u32 val; 220 221 rk3288_writel(lvds, RK3288_LVDS_CFG_REG21, 222 RK3288_LVDS_CFG_REG21_TX_ENABLE); 223 rk3288_writel(lvds, RK3288_LVDS_CFG_REGC, 224 RK3288_LVDS_CFG_REGC_PLL_ENABLE); 225 val = LVDS_DUAL | LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN | LVDS_PWRDN; 226 val |= val << 16; 227 ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val); 228 if (ret != 0) 229 DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret); 230 231 pm_runtime_put(lvds->dev); 232 clk_disable(lvds->pclk); 233 } 234 235 static int rk3288_lvds_grf_config(struct drm_encoder *encoder, 236 struct drm_display_mode *mode) 237 { 238 struct rockchip_lvds *lvds = encoder_to_lvds(encoder); 239 u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0; 240 u8 pin_dclk = (mode->flags & DRM_MODE_FLAG_PCSYNC) ? 1 : 0; 241 u32 val; 242 int ret; 243 244 /* iomux to LCD data/sync mode */ 245 if (lvds->output == DISPLAY_OUTPUT_RGB) 246 if (lvds->pins && !IS_ERR(lvds->pins->default_state)) 247 pinctrl_select_state(lvds->pins->p, 248 lvds->pins->default_state); 249 val = lvds->format | LVDS_CH0_EN; 250 if (lvds->output == DISPLAY_OUTPUT_RGB) 251 val |= LVDS_TTL_EN | LVDS_CH1_EN; 252 else if (lvds->output == DISPLAY_OUTPUT_DUAL_LVDS) 253 val |= LVDS_DUAL | LVDS_CH1_EN; 254 255 if ((mode->htotal - mode->hsync_start) & 0x01) 256 val |= LVDS_START_PHASE_RST_1; 257 258 val |= (pin_dclk << 8) | (pin_hsync << 9); 259 val |= (0xffff << 16); 260 ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val); 261 if (ret) 262 DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret); 263 264 return ret; 265 } 266 267 static int rk3288_lvds_set_vop_source(struct rockchip_lvds *lvds, 268 struct drm_encoder *encoder) 269 { 270 u32 val; 271 int ret; 272 273 ret = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder); 274 if (ret < 0) 275 return ret; 276 277 val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16; 278 if (ret) 279 val |= RK3288_LVDS_SOC_CON6_SEL_VOP_LIT; 280 281 ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON6, val); 282 if (ret < 0) 283 return ret; 284 285 return 0; 286 } 287 288 static void rk3288_lvds_encoder_enable(struct drm_encoder *encoder) 289 { 290 struct rockchip_lvds *lvds = encoder_to_lvds(encoder); 291 struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode; 292 int ret; 293 294 drm_panel_prepare(lvds->panel); 295 296 ret = rk3288_lvds_poweron(lvds); 297 if (ret < 0) { 298 DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret); 299 drm_panel_unprepare(lvds->panel); 300 return; 301 } 302 303 ret = rk3288_lvds_grf_config(encoder, mode); 304 if (ret) { 305 DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret); 306 drm_panel_unprepare(lvds->panel); 307 return; 308 } 309 310 ret = rk3288_lvds_set_vop_source(lvds, encoder); 311 if (ret) { 312 DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret); 313 drm_panel_unprepare(lvds->panel); 314 return; 315 } 316 317 drm_panel_enable(lvds->panel); 318 } 319 320 static void rk3288_lvds_encoder_disable(struct drm_encoder *encoder) 321 { 322 struct rockchip_lvds *lvds = encoder_to_lvds(encoder); 323 324 drm_panel_disable(lvds->panel); 325 rk3288_lvds_poweroff(lvds); 326 drm_panel_unprepare(lvds->panel); 327 } 328 329 static int px30_lvds_poweron(struct rockchip_lvds *lvds) 330 { 331 int ret; 332 333 ret = pm_runtime_get_sync(lvds->dev); 334 if (ret < 0) { 335 DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret); 336 return ret; 337 } 338 339 /* Enable LVDS mode */ 340 return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, 341 PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1), 342 PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1)); 343 } 344 345 static void px30_lvds_poweroff(struct rockchip_lvds *lvds) 346 { 347 regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, 348 PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1), 349 PX30_LVDS_MODE_EN(0) | PX30_LVDS_P2S_EN(0)); 350 351 pm_runtime_put(lvds->dev); 352 } 353 354 static int px30_lvds_grf_config(struct drm_encoder *encoder, 355 struct drm_display_mode *mode) 356 { 357 struct rockchip_lvds *lvds = encoder_to_lvds(encoder); 358 359 if (lvds->output != DISPLAY_OUTPUT_LVDS) { 360 DRM_DEV_ERROR(lvds->dev, "Unsupported display output %d\n", 361 lvds->output); 362 return -EINVAL; 363 } 364 365 /* Set format */ 366 return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, 367 PX30_LVDS_FORMAT(lvds->format), 368 PX30_LVDS_FORMAT(lvds->format)); 369 } 370 371 static int px30_lvds_set_vop_source(struct rockchip_lvds *lvds, 372 struct drm_encoder *encoder) 373 { 374 int vop; 375 376 vop = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder); 377 if (vop < 0) 378 return vop; 379 380 return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, 381 PX30_LVDS_VOP_SEL(1), 382 PX30_LVDS_VOP_SEL(vop)); 383 } 384 385 static void px30_lvds_encoder_enable(struct drm_encoder *encoder) 386 { 387 struct rockchip_lvds *lvds = encoder_to_lvds(encoder); 388 struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode; 389 int ret; 390 391 drm_panel_prepare(lvds->panel); 392 393 ret = px30_lvds_poweron(lvds); 394 if (ret) { 395 DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret); 396 drm_panel_unprepare(lvds->panel); 397 return; 398 } 399 400 ret = px30_lvds_grf_config(encoder, mode); 401 if (ret) { 402 DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret); 403 drm_panel_unprepare(lvds->panel); 404 return; 405 } 406 407 ret = px30_lvds_set_vop_source(lvds, encoder); 408 if (ret) { 409 DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret); 410 drm_panel_unprepare(lvds->panel); 411 return; 412 } 413 414 drm_panel_enable(lvds->panel); 415 } 416 417 static void px30_lvds_encoder_disable(struct drm_encoder *encoder) 418 { 419 struct rockchip_lvds *lvds = encoder_to_lvds(encoder); 420 421 drm_panel_disable(lvds->panel); 422 px30_lvds_poweroff(lvds); 423 drm_panel_unprepare(lvds->panel); 424 } 425 426 static const 427 struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = { 428 .enable = rk3288_lvds_encoder_enable, 429 .disable = rk3288_lvds_encoder_disable, 430 .atomic_check = rockchip_lvds_encoder_atomic_check, 431 }; 432 433 static const 434 struct drm_encoder_helper_funcs px30_lvds_encoder_helper_funcs = { 435 .enable = px30_lvds_encoder_enable, 436 .disable = px30_lvds_encoder_disable, 437 .atomic_check = rockchip_lvds_encoder_atomic_check, 438 }; 439 440 static int rk3288_lvds_probe(struct platform_device *pdev, 441 struct rockchip_lvds *lvds) 442 { 443 int ret; 444 445 lvds->regs = devm_platform_ioremap_resource(pdev, 0); 446 if (IS_ERR(lvds->regs)) 447 return PTR_ERR(lvds->regs); 448 449 lvds->pclk = devm_clk_get(lvds->dev, "pclk_lvds"); 450 if (IS_ERR(lvds->pclk)) { 451 DRM_DEV_ERROR(lvds->dev, "could not get pclk_lvds\n"); 452 return PTR_ERR(lvds->pclk); 453 } 454 455 lvds->pins = devm_kzalloc(lvds->dev, sizeof(*lvds->pins), 456 GFP_KERNEL); 457 if (!lvds->pins) 458 return -ENOMEM; 459 460 lvds->pins->p = devm_pinctrl_get(lvds->dev); 461 if (IS_ERR(lvds->pins->p)) { 462 DRM_DEV_ERROR(lvds->dev, "no pinctrl handle\n"); 463 devm_kfree(lvds->dev, lvds->pins); 464 lvds->pins = NULL; 465 } else { 466 lvds->pins->default_state = 467 pinctrl_lookup_state(lvds->pins->p, "lcdc"); 468 if (IS_ERR(lvds->pins->default_state)) { 469 DRM_DEV_ERROR(lvds->dev, "no default pinctrl state\n"); 470 devm_kfree(lvds->dev, lvds->pins); 471 lvds->pins = NULL; 472 } 473 } 474 475 ret = clk_prepare(lvds->pclk); 476 if (ret < 0) { 477 DRM_DEV_ERROR(lvds->dev, "failed to prepare pclk_lvds\n"); 478 return ret; 479 } 480 481 return 0; 482 } 483 484 static int px30_lvds_probe(struct platform_device *pdev, 485 struct rockchip_lvds *lvds) 486 { 487 int ret; 488 489 /* MSB */ 490 ret = regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, 491 PX30_LVDS_MSBSEL(1), 492 PX30_LVDS_MSBSEL(1)); 493 if (ret) 494 return ret; 495 496 /* PHY */ 497 lvds->dphy = devm_phy_get(&pdev->dev, "dphy"); 498 if (IS_ERR(lvds->dphy)) 499 return PTR_ERR(lvds->dphy); 500 501 ret = phy_init(lvds->dphy); 502 if (ret) 503 return ret; 504 505 ret = phy_set_mode(lvds->dphy, PHY_MODE_LVDS); 506 if (ret) 507 return ret; 508 509 return phy_power_on(lvds->dphy); 510 } 511 512 static const struct rockchip_lvds_soc_data rk3288_lvds_data = { 513 .probe = rk3288_lvds_probe, 514 .helper_funcs = &rk3288_lvds_encoder_helper_funcs, 515 }; 516 517 static const struct rockchip_lvds_soc_data px30_lvds_data = { 518 .probe = px30_lvds_probe, 519 .helper_funcs = &px30_lvds_encoder_helper_funcs, 520 }; 521 522 static const struct of_device_id rockchip_lvds_dt_ids[] = { 523 { 524 .compatible = "rockchip,rk3288-lvds", 525 .data = &rk3288_lvds_data 526 }, 527 { 528 .compatible = "rockchip,px30-lvds", 529 .data = &px30_lvds_data 530 }, 531 {} 532 }; 533 MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids); 534 535 static int rockchip_lvds_bind(struct device *dev, struct device *master, 536 void *data) 537 { 538 struct rockchip_lvds *lvds = dev_get_drvdata(dev); 539 struct drm_device *drm_dev = data; 540 struct drm_encoder *encoder; 541 struct drm_connector *connector; 542 struct device_node *remote = NULL; 543 struct device_node *port, *endpoint; 544 int ret = 0, child_count = 0; 545 const char *name; 546 u32 endpoint_id = 0; 547 548 lvds->drm_dev = drm_dev; 549 port = of_graph_get_port_by_id(dev->of_node, 1); 550 if (!port) { 551 DRM_DEV_ERROR(dev, 552 "can't found port point, please init lvds panel port!\n"); 553 return -EINVAL; 554 } 555 for_each_child_of_node(port, endpoint) { 556 child_count++; 557 of_property_read_u32(endpoint, "reg", &endpoint_id); 558 ret = drm_of_find_panel_or_bridge(dev->of_node, 1, endpoint_id, 559 &lvds->panel, &lvds->bridge); 560 if (!ret) { 561 of_node_put(endpoint); 562 break; 563 } 564 } 565 if (!child_count) { 566 DRM_DEV_ERROR(dev, "lvds port does not have any children\n"); 567 ret = -EINVAL; 568 goto err_put_port; 569 } else if (ret) { 570 DRM_DEV_ERROR(dev, "failed to find panel and bridge node\n"); 571 ret = -EPROBE_DEFER; 572 goto err_put_port; 573 } 574 if (lvds->panel) 575 remote = lvds->panel->dev->of_node; 576 else 577 remote = lvds->bridge->of_node; 578 if (of_property_read_string(dev->of_node, "rockchip,output", &name)) 579 /* default set it as output rgb */ 580 lvds->output = DISPLAY_OUTPUT_RGB; 581 else 582 lvds->output = rockchip_lvds_name_to_output(name); 583 584 if (lvds->output < 0) { 585 DRM_DEV_ERROR(dev, "invalid output type [%s]\n", name); 586 ret = lvds->output; 587 goto err_put_remote; 588 } 589 590 if (of_property_read_string(remote, "data-mapping", &name)) 591 /* default set it as format vesa 18 */ 592 lvds->format = LVDS_VESA_18; 593 else 594 lvds->format = rockchip_lvds_name_to_format(name); 595 596 if (lvds->format < 0) { 597 DRM_DEV_ERROR(dev, "invalid data-mapping format [%s]\n", name); 598 ret = lvds->format; 599 goto err_put_remote; 600 } 601 602 encoder = &lvds->encoder; 603 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev, 604 dev->of_node); 605 606 ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_LVDS); 607 if (ret < 0) { 608 DRM_DEV_ERROR(drm_dev->dev, 609 "failed to initialize encoder: %d\n", ret); 610 goto err_put_remote; 611 } 612 613 drm_encoder_helper_add(encoder, lvds->soc_data->helper_funcs); 614 connector = &lvds->connector; 615 616 if (lvds->panel) { 617 connector->dpms = DRM_MODE_DPMS_OFF; 618 ret = drm_connector_init(drm_dev, connector, 619 &rockchip_lvds_connector_funcs, 620 DRM_MODE_CONNECTOR_LVDS); 621 if (ret < 0) { 622 DRM_DEV_ERROR(drm_dev->dev, 623 "failed to initialize connector: %d\n", ret); 624 goto err_free_encoder; 625 } 626 627 drm_connector_helper_add(connector, 628 &rockchip_lvds_connector_helper_funcs); 629 } else { 630 ret = drm_bridge_attach(encoder, lvds->bridge, NULL, 631 DRM_BRIDGE_ATTACH_NO_CONNECTOR); 632 if (ret) 633 goto err_free_encoder; 634 635 connector = drm_bridge_connector_init(lvds->drm_dev, encoder); 636 if (IS_ERR(connector)) { 637 DRM_DEV_ERROR(drm_dev->dev, 638 "failed to initialize bridge connector: %pe\n", 639 connector); 640 ret = PTR_ERR(connector); 641 goto err_free_encoder; 642 } 643 } 644 645 ret = drm_connector_attach_encoder(connector, encoder); 646 if (ret < 0) { 647 DRM_DEV_ERROR(drm_dev->dev, 648 "failed to attach encoder: %d\n", ret); 649 goto err_free_connector; 650 } 651 652 pm_runtime_enable(dev); 653 of_node_put(remote); 654 of_node_put(port); 655 656 return 0; 657 658 err_free_connector: 659 drm_connector_cleanup(connector); 660 err_free_encoder: 661 drm_encoder_cleanup(encoder); 662 err_put_remote: 663 of_node_put(remote); 664 err_put_port: 665 of_node_put(port); 666 667 return ret; 668 } 669 670 static void rockchip_lvds_unbind(struct device *dev, struct device *master, 671 void *data) 672 { 673 struct rockchip_lvds *lvds = dev_get_drvdata(dev); 674 const struct drm_encoder_helper_funcs *encoder_funcs; 675 676 encoder_funcs = lvds->soc_data->helper_funcs; 677 encoder_funcs->disable(&lvds->encoder); 678 pm_runtime_disable(dev); 679 drm_connector_cleanup(&lvds->connector); 680 drm_encoder_cleanup(&lvds->encoder); 681 } 682 683 static const struct component_ops rockchip_lvds_component_ops = { 684 .bind = rockchip_lvds_bind, 685 .unbind = rockchip_lvds_unbind, 686 }; 687 688 static int rockchip_lvds_probe(struct platform_device *pdev) 689 { 690 struct device *dev = &pdev->dev; 691 struct rockchip_lvds *lvds; 692 const struct of_device_id *match; 693 int ret; 694 695 if (!dev->of_node) 696 return -ENODEV; 697 698 lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL); 699 if (!lvds) 700 return -ENOMEM; 701 702 lvds->dev = dev; 703 match = of_match_node(rockchip_lvds_dt_ids, dev->of_node); 704 if (!match) 705 return -ENODEV; 706 lvds->soc_data = match->data; 707 708 lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node, 709 "rockchip,grf"); 710 if (IS_ERR(lvds->grf)) { 711 DRM_DEV_ERROR(dev, "missing rockchip,grf property\n"); 712 return PTR_ERR(lvds->grf); 713 } 714 715 ret = lvds->soc_data->probe(pdev, lvds); 716 if (ret) { 717 DRM_DEV_ERROR(dev, "Platform initialization failed\n"); 718 return ret; 719 } 720 721 dev_set_drvdata(dev, lvds); 722 723 ret = component_add(&pdev->dev, &rockchip_lvds_component_ops); 724 if (ret < 0) { 725 DRM_DEV_ERROR(dev, "failed to add component\n"); 726 clk_unprepare(lvds->pclk); 727 } 728 729 return ret; 730 } 731 732 static int rockchip_lvds_remove(struct platform_device *pdev) 733 { 734 struct rockchip_lvds *lvds = platform_get_drvdata(pdev); 735 736 component_del(&pdev->dev, &rockchip_lvds_component_ops); 737 clk_unprepare(lvds->pclk); 738 739 return 0; 740 } 741 742 struct platform_driver rockchip_lvds_driver = { 743 .probe = rockchip_lvds_probe, 744 .remove = rockchip_lvds_remove, 745 .driver = { 746 .name = "rockchip-lvds", 747 .of_match_table = of_match_ptr(rockchip_lvds_dt_ids), 748 }, 749 }; 750