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