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 36struct 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 */ 49struct 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 54struct 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 71static 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 80static 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 92static 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 104static 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 112static 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 120static const 121struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = { 122 .get_modes = rockchip_lvds_connector_get_modes, 123}; 124 125static int 126rockchip_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 138static 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_resume_and_get(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 215static 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 234static 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 266static 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 287static 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 319static 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 328static int px30_lvds_poweron(struct rockchip_lvds *lvds) 329{ 330 int ret; 331 332 ret = pm_runtime_resume_and_get(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 ret = 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 if (ret) 343 pm_runtime_put(lvds->dev); 344 345 return ret; 346} 347 348static void px30_lvds_poweroff(struct rockchip_lvds *lvds) 349{ 350 regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, 351 PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1), 352 PX30_LVDS_MODE_EN(0) | PX30_LVDS_P2S_EN(0)); 353 354 pm_runtime_put(lvds->dev); 355} 356 357static int px30_lvds_grf_config(struct drm_encoder *encoder, 358 struct drm_display_mode *mode) 359{ 360 struct rockchip_lvds *lvds = encoder_to_lvds(encoder); 361 362 if (lvds->output != DISPLAY_OUTPUT_LVDS) { 363 DRM_DEV_ERROR(lvds->dev, "Unsupported display output %d\n", 364 lvds->output); 365 return -EINVAL; 366 } 367 368 /* Set format */ 369 return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, 370 PX30_LVDS_FORMAT(lvds->format), 371 PX30_LVDS_FORMAT(lvds->format)); 372} 373 374static int px30_lvds_set_vop_source(struct rockchip_lvds *lvds, 375 struct drm_encoder *encoder) 376{ 377 int vop; 378 379 vop = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder); 380 if (vop < 0) 381 return vop; 382 383 return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, 384 PX30_LVDS_VOP_SEL(1), 385 PX30_LVDS_VOP_SEL(vop)); 386} 387 388static void px30_lvds_encoder_enable(struct drm_encoder *encoder) 389{ 390 struct rockchip_lvds *lvds = encoder_to_lvds(encoder); 391 struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode; 392 int ret; 393 394 drm_panel_prepare(lvds->panel); 395 396 ret = px30_lvds_poweron(lvds); 397 if (ret) { 398 DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret); 399 drm_panel_unprepare(lvds->panel); 400 return; 401 } 402 403 ret = px30_lvds_grf_config(encoder, mode); 404 if (ret) { 405 DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret); 406 drm_panel_unprepare(lvds->panel); 407 return; 408 } 409 410 ret = px30_lvds_set_vop_source(lvds, encoder); 411 if (ret) { 412 DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret); 413 drm_panel_unprepare(lvds->panel); 414 return; 415 } 416 417 drm_panel_enable(lvds->panel); 418} 419 420static void px30_lvds_encoder_disable(struct drm_encoder *encoder) 421{ 422 struct rockchip_lvds *lvds = encoder_to_lvds(encoder); 423 424 drm_panel_disable(lvds->panel); 425 px30_lvds_poweroff(lvds); 426 drm_panel_unprepare(lvds->panel); 427} 428 429static const 430struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = { 431 .enable = rk3288_lvds_encoder_enable, 432 .disable = rk3288_lvds_encoder_disable, 433 .atomic_check = rockchip_lvds_encoder_atomic_check, 434}; 435 436static const 437struct drm_encoder_helper_funcs px30_lvds_encoder_helper_funcs = { 438 .enable = px30_lvds_encoder_enable, 439 .disable = px30_lvds_encoder_disable, 440 .atomic_check = rockchip_lvds_encoder_atomic_check, 441}; 442 443static int rk3288_lvds_probe(struct platform_device *pdev, 444 struct rockchip_lvds *lvds) 445{ 446 struct resource *res; 447 int ret; 448 449 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 450 lvds->regs = devm_ioremap_resource(lvds->dev, res); 451 if (IS_ERR(lvds->regs)) 452 return PTR_ERR(lvds->regs); 453 454 lvds->pclk = devm_clk_get(lvds->dev, "pclk_lvds"); 455 if (IS_ERR(lvds->pclk)) { 456 DRM_DEV_ERROR(lvds->dev, "could not get pclk_lvds\n"); 457 return PTR_ERR(lvds->pclk); 458 } 459 460 lvds->pins = devm_kzalloc(lvds->dev, sizeof(*lvds->pins), 461 GFP_KERNEL); 462 if (!lvds->pins) 463 return -ENOMEM; 464 465 lvds->pins->p = devm_pinctrl_get(lvds->dev); 466 if (IS_ERR(lvds->pins->p)) { 467 DRM_DEV_ERROR(lvds->dev, "no pinctrl handle\n"); 468 devm_kfree(lvds->dev, lvds->pins); 469 lvds->pins = NULL; 470 } else { 471 lvds->pins->default_state = 472 pinctrl_lookup_state(lvds->pins->p, "lcdc"); 473 if (IS_ERR(lvds->pins->default_state)) { 474 DRM_DEV_ERROR(lvds->dev, "no default pinctrl state\n"); 475 devm_kfree(lvds->dev, lvds->pins); 476 lvds->pins = NULL; 477 } 478 } 479 480 ret = clk_prepare(lvds->pclk); 481 if (ret < 0) { 482 DRM_DEV_ERROR(lvds->dev, "failed to prepare pclk_lvds\n"); 483 return ret; 484 } 485 486 return 0; 487} 488 489static int px30_lvds_probe(struct platform_device *pdev, 490 struct rockchip_lvds *lvds) 491{ 492 int ret; 493 494 /* MSB */ 495 ret = regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1, 496 PX30_LVDS_MSBSEL(1), 497 PX30_LVDS_MSBSEL(1)); 498 if (ret) 499 return ret; 500 501 /* PHY */ 502 lvds->dphy = devm_phy_get(&pdev->dev, "dphy"); 503 if (IS_ERR(lvds->dphy)) 504 return PTR_ERR(lvds->dphy); 505 506 ret = phy_init(lvds->dphy); 507 if (ret) 508 return ret; 509 510 ret = phy_set_mode(lvds->dphy, PHY_MODE_LVDS); 511 if (ret) 512 return ret; 513 514 return phy_power_on(lvds->dphy); 515} 516 517static const struct rockchip_lvds_soc_data rk3288_lvds_data = { 518 .probe = rk3288_lvds_probe, 519 .helper_funcs = &rk3288_lvds_encoder_helper_funcs, 520}; 521 522static const struct rockchip_lvds_soc_data px30_lvds_data = { 523 .probe = px30_lvds_probe, 524 .helper_funcs = &px30_lvds_encoder_helper_funcs, 525}; 526 527static const struct of_device_id rockchip_lvds_dt_ids[] = { 528 { 529 .compatible = "rockchip,rk3288-lvds", 530 .data = &rk3288_lvds_data 531 }, 532 { 533 .compatible = "rockchip,px30-lvds", 534 .data = &px30_lvds_data 535 }, 536 {} 537}; 538MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids); 539 540static int rockchip_lvds_bind(struct device *dev, struct device *master, 541 void *data) 542{ 543 struct rockchip_lvds *lvds = dev_get_drvdata(dev); 544 struct drm_device *drm_dev = data; 545 struct drm_encoder *encoder; 546 struct drm_connector *connector; 547 struct device_node *remote = NULL; 548 struct device_node *port, *endpoint; 549 int ret = 0, child_count = 0; 550 const char *name; 551 u32 endpoint_id = 0; 552 553 lvds->drm_dev = drm_dev; 554 port = of_graph_get_port_by_id(dev->of_node, 1); 555 if (!port) { 556 DRM_DEV_ERROR(dev, 557 "can't found port point, please init lvds panel port!\n"); 558 return -EINVAL; 559 } 560 for_each_child_of_node(port, endpoint) { 561 child_count++; 562 of_property_read_u32(endpoint, "reg", &endpoint_id); 563 ret = drm_of_find_panel_or_bridge(dev->of_node, 1, endpoint_id, 564 &lvds->panel, &lvds->bridge); 565 if (!ret) { 566 of_node_put(endpoint); 567 break; 568 } 569 } 570 if (!child_count) { 571 DRM_DEV_ERROR(dev, "lvds port does not have any children\n"); 572 ret = -EINVAL; 573 goto err_put_port; 574 } else if (ret) { 575 DRM_DEV_ERROR(dev, "failed to find panel and bridge node\n"); 576 ret = -EPROBE_DEFER; 577 goto err_put_port; 578 } 579 if (lvds->panel) 580 remote = lvds->panel->dev->of_node; 581 else 582 remote = lvds->bridge->of_node; 583 if (of_property_read_string(dev->of_node, "rockchip,output", &name)) 584 /* default set it as output rgb */ 585 lvds->output = DISPLAY_OUTPUT_RGB; 586 else 587 lvds->output = rockchip_lvds_name_to_output(name); 588 589 if (lvds->output < 0) { 590 DRM_DEV_ERROR(dev, "invalid output type [%s]\n", name); 591 ret = lvds->output; 592 goto err_put_remote; 593 } 594 595 if (of_property_read_string(remote, "data-mapping", &name)) 596 /* default set it as format vesa 18 */ 597 lvds->format = LVDS_VESA_18; 598 else 599 lvds->format = rockchip_lvds_name_to_format(name); 600 601 if (lvds->format < 0) { 602 DRM_DEV_ERROR(dev, "invalid data-mapping format [%s]\n", name); 603 ret = lvds->format; 604 goto err_put_remote; 605 } 606 607 encoder = &lvds->encoder; 608 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev, 609 dev->of_node); 610 611 ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_LVDS); 612 if (ret < 0) { 613 DRM_DEV_ERROR(drm_dev->dev, 614 "failed to initialize encoder: %d\n", ret); 615 goto err_put_remote; 616 } 617 618 drm_encoder_helper_add(encoder, lvds->soc_data->helper_funcs); 619 620 if (lvds->panel) { 621 connector = &lvds->connector; 622 connector->dpms = DRM_MODE_DPMS_OFF; 623 ret = drm_connector_init(drm_dev, connector, 624 &rockchip_lvds_connector_funcs, 625 DRM_MODE_CONNECTOR_LVDS); 626 if (ret < 0) { 627 DRM_DEV_ERROR(drm_dev->dev, 628 "failed to initialize connector: %d\n", ret); 629 goto err_free_encoder; 630 } 631 632 drm_connector_helper_add(connector, 633 &rockchip_lvds_connector_helper_funcs); 634 635 ret = drm_connector_attach_encoder(connector, encoder); 636 if (ret < 0) { 637 DRM_DEV_ERROR(drm_dev->dev, 638 "failed to attach encoder: %d\n", ret); 639 goto err_free_connector; 640 } 641 } else { 642 ret = drm_bridge_attach(encoder, lvds->bridge, NULL, 0); 643 if (ret) { 644 DRM_DEV_ERROR(drm_dev->dev, 645 "failed to attach bridge: %d\n", ret); 646 goto err_free_encoder; 647 } 648 } 649 650 pm_runtime_enable(dev); 651 of_node_put(remote); 652 of_node_put(port); 653 654 return 0; 655 656err_free_connector: 657 drm_connector_cleanup(connector); 658err_free_encoder: 659 drm_encoder_cleanup(encoder); 660err_put_remote: 661 of_node_put(remote); 662err_put_port: 663 of_node_put(port); 664 665 return ret; 666} 667 668static void rockchip_lvds_unbind(struct device *dev, struct device *master, 669 void *data) 670{ 671 struct rockchip_lvds *lvds = dev_get_drvdata(dev); 672 const struct drm_encoder_helper_funcs *encoder_funcs; 673 674 encoder_funcs = lvds->soc_data->helper_funcs; 675 encoder_funcs->disable(&lvds->encoder); 676 pm_runtime_disable(dev); 677 drm_connector_cleanup(&lvds->connector); 678 drm_encoder_cleanup(&lvds->encoder); 679} 680 681static const struct component_ops rockchip_lvds_component_ops = { 682 .bind = rockchip_lvds_bind, 683 .unbind = rockchip_lvds_unbind, 684}; 685 686static int rockchip_lvds_probe(struct platform_device *pdev) 687{ 688 struct device *dev = &pdev->dev; 689 struct rockchip_lvds *lvds; 690 const struct of_device_id *match; 691 int ret; 692 693 if (!dev->of_node) 694 return -ENODEV; 695 696 lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL); 697 if (!lvds) 698 return -ENOMEM; 699 700 lvds->dev = dev; 701 match = of_match_node(rockchip_lvds_dt_ids, dev->of_node); 702 if (!match) 703 return -ENODEV; 704 lvds->soc_data = match->data; 705 706 lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node, 707 "rockchip,grf"); 708 if (IS_ERR(lvds->grf)) { 709 DRM_DEV_ERROR(dev, "missing rockchip,grf property\n"); 710 return PTR_ERR(lvds->grf); 711 } 712 713 ret = lvds->soc_data->probe(pdev, lvds); 714 if (ret) { 715 DRM_DEV_ERROR(dev, "Platform initialization failed\n"); 716 return ret; 717 } 718 719 dev_set_drvdata(dev, lvds); 720 721 ret = component_add(&pdev->dev, &rockchip_lvds_component_ops); 722 if (ret < 0) { 723 DRM_DEV_ERROR(dev, "failed to add component\n"); 724 clk_unprepare(lvds->pclk); 725 } 726 727 return ret; 728} 729 730static int rockchip_lvds_remove(struct platform_device *pdev) 731{ 732 struct rockchip_lvds *lvds = dev_get_drvdata(&pdev->dev); 733 734 component_del(&pdev->dev, &rockchip_lvds_component_ops); 735 clk_unprepare(lvds->pclk); 736 737 return 0; 738} 739 740struct platform_driver rockchip_lvds_driver = { 741 .probe = rockchip_lvds_probe, 742 .remove = rockchip_lvds_remove, 743 .driver = { 744 .name = "rockchip-lvds", 745 .of_match_table = of_match_ptr(rockchip_lvds_dt_ids), 746 }, 747}; 748