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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd4 * 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/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_lvds.h"30 31#define DISPLAY_OUTPUT_RGB 032#define DISPLAY_OUTPUT_LVDS 133#define DISPLAY_OUTPUT_DUAL_LVDS 234 35struct rockchip_lvds;36 37/**38 * struct rockchip_lvds_soc_data - rockchip lvds Soc private data39 * @probe: LVDS platform probe function40 * @helper_funcs: LVDS connector helper functions41 */42struct rockchip_lvds_soc_data {43 int (*probe)(struct platform_device *pdev, struct rockchip_lvds *lvds);44 const struct drm_encoder_helper_funcs *helper_funcs;45};46 47struct rockchip_lvds {48 struct device *dev;49 void __iomem *regs;50 struct regmap *grf;51 struct clk *pclk;52 struct phy *dphy;53 const struct rockchip_lvds_soc_data *soc_data;54 int output; /* rgb lvds or dual lvds output */55 int format; /* vesa or jeida format */56 struct drm_device *drm_dev;57 struct drm_panel *panel;58 struct drm_bridge *bridge;59 struct drm_connector connector;60 struct rockchip_encoder encoder;61 struct dev_pin_info *pins;62};63 64static inline struct rockchip_lvds *connector_to_lvds(struct drm_connector *connector)65{66 return container_of(connector, struct rockchip_lvds, connector);67}68 69static inline struct rockchip_lvds *encoder_to_lvds(struct drm_encoder *encoder)70{71 struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder);72 73 return container_of(rkencoder, struct rockchip_lvds, encoder);74}75 76static inline void rk3288_writel(struct rockchip_lvds *lvds, u32 offset,77 u32 val)78{79 writel_relaxed(val, lvds->regs + offset);80 if (lvds->output == DISPLAY_OUTPUT_LVDS)81 return;82 writel_relaxed(val, lvds->regs + offset + RK3288_LVDS_CH1_OFFSET);83}84 85static inline int rockchip_lvds_name_to_format(const char *s)86{87 if (strncmp(s, "jeida-18", 8) == 0)88 return LVDS_JEIDA_18;89 else if (strncmp(s, "jeida-24", 8) == 0)90 return LVDS_JEIDA_24;91 else if (strncmp(s, "vesa-24", 7) == 0)92 return LVDS_VESA_24;93 94 return -EINVAL;95}96 97static inline int rockchip_lvds_name_to_output(const char *s)98{99 if (strncmp(s, "rgb", 3) == 0)100 return DISPLAY_OUTPUT_RGB;101 else if (strncmp(s, "lvds", 4) == 0)102 return DISPLAY_OUTPUT_LVDS;103 else if (strncmp(s, "duallvds", 8) == 0)104 return DISPLAY_OUTPUT_DUAL_LVDS;105 106 return -EINVAL;107}108 109static const struct drm_connector_funcs rockchip_lvds_connector_funcs = {110 .fill_modes = drm_helper_probe_single_connector_modes,111 .destroy = drm_connector_cleanup,112 .reset = drm_atomic_helper_connector_reset,113 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,114 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,115};116 117static int rockchip_lvds_connector_get_modes(struct drm_connector *connector)118{119 struct rockchip_lvds *lvds = connector_to_lvds(connector);120 struct drm_panel *panel = lvds->panel;121 122 return drm_panel_get_modes(panel, connector);123}124 125static const126struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = {127 .get_modes = rockchip_lvds_connector_get_modes,128};129 130static int131rockchip_lvds_encoder_atomic_check(struct drm_encoder *encoder,132 struct drm_crtc_state *crtc_state,133 struct drm_connector_state *conn_state)134{135 struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);136 137 s->output_mode = ROCKCHIP_OUT_MODE_P888;138 s->output_type = DRM_MODE_CONNECTOR_LVDS;139 140 return 0;141}142 143static int rk3288_lvds_poweron(struct rockchip_lvds *lvds)144{145 int ret;146 u32 val;147 148 ret = clk_enable(lvds->pclk);149 if (ret < 0) {150 DRM_DEV_ERROR(lvds->dev, "failed to enable lvds pclk %d\n", ret);151 return ret;152 }153 ret = pm_runtime_resume_and_get(lvds->dev);154 if (ret < 0) {155 DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret);156 clk_disable(lvds->pclk);157 return ret;158 }159 val = RK3288_LVDS_CH0_REG0_LANE4_EN | RK3288_LVDS_CH0_REG0_LANE3_EN |160 RK3288_LVDS_CH0_REG0_LANE2_EN | RK3288_LVDS_CH0_REG0_LANE1_EN |161 RK3288_LVDS_CH0_REG0_LANE0_EN;162 if (lvds->output == DISPLAY_OUTPUT_RGB) {163 val |= RK3288_LVDS_CH0_REG0_TTL_EN |164 RK3288_LVDS_CH0_REG0_LANECK_EN;165 rk3288_writel(lvds, RK3288_LVDS_CH0_REG0, val);166 rk3288_writel(lvds, RK3288_LVDS_CH0_REG2,167 RK3288_LVDS_PLL_FBDIV_REG2(0x46));168 rk3288_writel(lvds, RK3288_LVDS_CH0_REG4,169 RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE |170 RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE |171 RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE |172 RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE |173 RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE |174 RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE);175 rk3288_writel(lvds, RK3288_LVDS_CH0_REG5,176 RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA |177 RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA |178 RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA |179 RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA |180 RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA |181 RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA);182 } else {183 val |= RK3288_LVDS_CH0_REG0_LVDS_EN |184 RK3288_LVDS_CH0_REG0_LANECK_EN;185 rk3288_writel(lvds, RK3288_LVDS_CH0_REG0, val);186 rk3288_writel(lvds, RK3288_LVDS_CH0_REG1,187 RK3288_LVDS_CH0_REG1_LANECK_BIAS |188 RK3288_LVDS_CH0_REG1_LANE4_BIAS |189 RK3288_LVDS_CH0_REG1_LANE3_BIAS |190 RK3288_LVDS_CH0_REG1_LANE2_BIAS |191 RK3288_LVDS_CH0_REG1_LANE1_BIAS |192 RK3288_LVDS_CH0_REG1_LANE0_BIAS);193 rk3288_writel(lvds, RK3288_LVDS_CH0_REG2,194 RK3288_LVDS_CH0_REG2_RESERVE_ON |195 RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE |196 RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE |197 RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE |198 RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE |199 RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE |200 RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE |201 RK3288_LVDS_PLL_FBDIV_REG2(0x46));202 rk3288_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00);203 rk3288_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00);204 }205 rk3288_writel(lvds, RK3288_LVDS_CH0_REG3,206 RK3288_LVDS_PLL_FBDIV_REG3(0x46));207 rk3288_writel(lvds, RK3288_LVDS_CH0_REGD,208 RK3288_LVDS_PLL_PREDIV_REGD(0x0a));209 rk3288_writel(lvds, RK3288_LVDS_CH0_REG20,210 RK3288_LVDS_CH0_REG20_LSB);211 212 rk3288_writel(lvds, RK3288_LVDS_CFG_REGC,213 RK3288_LVDS_CFG_REGC_PLL_ENABLE);214 rk3288_writel(lvds, RK3288_LVDS_CFG_REG21,215 RK3288_LVDS_CFG_REG21_TX_ENABLE);216 217 return 0;218}219 220static void rk3288_lvds_poweroff(struct rockchip_lvds *lvds)221{222 int ret;223 u32 val;224 225 rk3288_writel(lvds, RK3288_LVDS_CFG_REG21,226 RK3288_LVDS_CFG_REG21_TX_ENABLE);227 rk3288_writel(lvds, RK3288_LVDS_CFG_REGC,228 RK3288_LVDS_CFG_REGC_PLL_ENABLE);229 val = LVDS_DUAL | LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN | LVDS_PWRDN;230 val |= val << 16;231 ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val);232 if (ret != 0)233 DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret);234 235 pm_runtime_put(lvds->dev);236 clk_disable(lvds->pclk);237}238 239static int rk3288_lvds_grf_config(struct drm_encoder *encoder,240 struct drm_display_mode *mode)241{242 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);243 u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0;244 u8 pin_dclk = (mode->flags & DRM_MODE_FLAG_PCSYNC) ? 1 : 0;245 u32 val;246 int ret;247 248 /* iomux to LCD data/sync mode */249 if (lvds->output == DISPLAY_OUTPUT_RGB)250 if (lvds->pins && !IS_ERR(lvds->pins->default_state))251 pinctrl_select_state(lvds->pins->p,252 lvds->pins->default_state);253 val = lvds->format | LVDS_CH0_EN;254 if (lvds->output == DISPLAY_OUTPUT_RGB)255 val |= LVDS_TTL_EN | LVDS_CH1_EN;256 else if (lvds->output == DISPLAY_OUTPUT_DUAL_LVDS)257 val |= LVDS_DUAL | LVDS_CH1_EN;258 259 if ((mode->htotal - mode->hsync_start) & 0x01)260 val |= LVDS_START_PHASE_RST_1;261 262 val |= (pin_dclk << 8) | (pin_hsync << 9);263 val |= (0xffff << 16);264 ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val);265 if (ret)266 DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret);267 268 return ret;269}270 271static int rk3288_lvds_set_vop_source(struct rockchip_lvds *lvds,272 struct drm_encoder *encoder)273{274 u32 val;275 int ret;276 277 ret = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder);278 if (ret < 0)279 return ret;280 281 val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16;282 if (ret)283 val |= RK3288_LVDS_SOC_CON6_SEL_VOP_LIT;284 285 ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON6, val);286 if (ret < 0)287 return ret;288 289 return 0;290}291 292static void rk3288_lvds_encoder_enable(struct drm_encoder *encoder)293{294 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);295 struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;296 int ret;297 298 drm_panel_prepare(lvds->panel);299 300 ret = rk3288_lvds_poweron(lvds);301 if (ret < 0) {302 DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret);303 drm_panel_unprepare(lvds->panel);304 return;305 }306 307 ret = rk3288_lvds_grf_config(encoder, mode);308 if (ret) {309 DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret);310 drm_panel_unprepare(lvds->panel);311 return;312 }313 314 ret = rk3288_lvds_set_vop_source(lvds, encoder);315 if (ret) {316 DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret);317 drm_panel_unprepare(lvds->panel);318 return;319 }320 321 drm_panel_enable(lvds->panel);322}323 324static void rk3288_lvds_encoder_disable(struct drm_encoder *encoder)325{326 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);327 328 drm_panel_disable(lvds->panel);329 rk3288_lvds_poweroff(lvds);330 drm_panel_unprepare(lvds->panel);331}332 333static int px30_lvds_poweron(struct rockchip_lvds *lvds)334{335 int ret;336 337 ret = pm_runtime_resume_and_get(lvds->dev);338 if (ret < 0) {339 DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret);340 return ret;341 }342 343 /* Enable LVDS mode */344 ret = regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,345 PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1),346 PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1));347 if (ret)348 pm_runtime_put(lvds->dev);349 350 return ret;351}352 353static void px30_lvds_poweroff(struct rockchip_lvds *lvds)354{355 regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,356 PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1),357 PX30_LVDS_MODE_EN(0) | PX30_LVDS_P2S_EN(0));358 359 pm_runtime_put(lvds->dev);360}361 362static int px30_lvds_grf_config(struct drm_encoder *encoder,363 struct drm_display_mode *mode)364{365 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);366 367 if (lvds->output != DISPLAY_OUTPUT_LVDS) {368 DRM_DEV_ERROR(lvds->dev, "Unsupported display output %d\n",369 lvds->output);370 return -EINVAL;371 }372 373 /* Set format */374 return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,375 PX30_LVDS_FORMAT(lvds->format),376 PX30_LVDS_FORMAT(lvds->format));377}378 379static int px30_lvds_set_vop_source(struct rockchip_lvds *lvds,380 struct drm_encoder *encoder)381{382 int vop;383 384 vop = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder);385 if (vop < 0)386 return vop;387 388 return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,389 PX30_LVDS_VOP_SEL(1),390 PX30_LVDS_VOP_SEL(vop));391}392 393static void px30_lvds_encoder_enable(struct drm_encoder *encoder)394{395 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);396 struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;397 int ret;398 399 drm_panel_prepare(lvds->panel);400 401 ret = px30_lvds_poweron(lvds);402 if (ret) {403 DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret);404 drm_panel_unprepare(lvds->panel);405 return;406 }407 408 ret = px30_lvds_grf_config(encoder, mode);409 if (ret) {410 DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret);411 drm_panel_unprepare(lvds->panel);412 return;413 }414 415 ret = px30_lvds_set_vop_source(lvds, encoder);416 if (ret) {417 DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret);418 drm_panel_unprepare(lvds->panel);419 return;420 }421 422 drm_panel_enable(lvds->panel);423}424 425static void px30_lvds_encoder_disable(struct drm_encoder *encoder)426{427 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);428 429 drm_panel_disable(lvds->panel);430 px30_lvds_poweroff(lvds);431 drm_panel_unprepare(lvds->panel);432}433 434static const435struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {436 .enable = rk3288_lvds_encoder_enable,437 .disable = rk3288_lvds_encoder_disable,438 .atomic_check = rockchip_lvds_encoder_atomic_check,439};440 441static const442struct drm_encoder_helper_funcs px30_lvds_encoder_helper_funcs = {443 .enable = px30_lvds_encoder_enable,444 .disable = px30_lvds_encoder_disable,445 .atomic_check = rockchip_lvds_encoder_atomic_check,446};447 448static int rk3288_lvds_probe(struct platform_device *pdev,449 struct rockchip_lvds *lvds)450{451 int ret;452 453 lvds->regs = devm_platform_ioremap_resource(pdev, 0);454 if (IS_ERR(lvds->regs))455 return PTR_ERR(lvds->regs);456 457 lvds->pclk = devm_clk_get(lvds->dev, "pclk_lvds");458 if (IS_ERR(lvds->pclk)) {459 DRM_DEV_ERROR(lvds->dev, "could not get pclk_lvds\n");460 return PTR_ERR(lvds->pclk);461 }462 463 lvds->pins = devm_kzalloc(lvds->dev, sizeof(*lvds->pins),464 GFP_KERNEL);465 if (!lvds->pins)466 return -ENOMEM;467 468 lvds->pins->p = devm_pinctrl_get(lvds->dev);469 if (IS_ERR(lvds->pins->p)) {470 DRM_DEV_ERROR(lvds->dev, "no pinctrl handle\n");471 devm_kfree(lvds->dev, lvds->pins);472 lvds->pins = NULL;473 } else {474 lvds->pins->default_state =475 pinctrl_lookup_state(lvds->pins->p, "lcdc");476 if (IS_ERR(lvds->pins->default_state)) {477 DRM_DEV_ERROR(lvds->dev, "no default pinctrl state\n");478 devm_kfree(lvds->dev, lvds->pins);479 lvds->pins = NULL;480 }481 }482 483 ret = clk_prepare(lvds->pclk);484 if (ret < 0) {485 DRM_DEV_ERROR(lvds->dev, "failed to prepare pclk_lvds\n");486 return ret;487 }488 489 return 0;490}491 492static int px30_lvds_probe(struct platform_device *pdev,493 struct rockchip_lvds *lvds)494{495 int ret;496 497 /* MSB */498 ret = regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,499 PX30_LVDS_MSBSEL(1),500 PX30_LVDS_MSBSEL(1));501 if (ret)502 return ret;503 504 /* PHY */505 lvds->dphy = devm_phy_get(&pdev->dev, "dphy");506 if (IS_ERR(lvds->dphy))507 return PTR_ERR(lvds->dphy);508 509 ret = phy_init(lvds->dphy);510 if (ret)511 return ret;512 513 ret = phy_set_mode(lvds->dphy, PHY_MODE_LVDS);514 if (ret)515 return ret;516 517 return phy_power_on(lvds->dphy);518}519 520static const struct rockchip_lvds_soc_data rk3288_lvds_data = {521 .probe = rk3288_lvds_probe,522 .helper_funcs = &rk3288_lvds_encoder_helper_funcs,523};524 525static const struct rockchip_lvds_soc_data px30_lvds_data = {526 .probe = px30_lvds_probe,527 .helper_funcs = &px30_lvds_encoder_helper_funcs,528};529 530static const struct of_device_id rockchip_lvds_dt_ids[] = {531 {532 .compatible = "rockchip,rk3288-lvds",533 .data = &rk3288_lvds_data534 },535 {536 .compatible = "rockchip,px30-lvds",537 .data = &px30_lvds_data538 },539 {}540};541MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids);542 543static int rockchip_lvds_bind(struct device *dev, struct device *master,544 void *data)545{546 struct rockchip_lvds *lvds = dev_get_drvdata(dev);547 struct drm_device *drm_dev = data;548 struct drm_encoder *encoder;549 struct drm_connector *connector;550 struct device_node *remote = NULL;551 struct device_node *port, *endpoint;552 int ret = 0, child_count = 0;553 const char *name;554 u32 endpoint_id = 0;555 556 lvds->drm_dev = drm_dev;557 port = of_graph_get_port_by_id(dev->of_node, 1);558 if (!port) {559 DRM_DEV_ERROR(dev,560 "can't found port point, please init lvds panel port!\n");561 return -EINVAL;562 }563 for_each_child_of_node(port, endpoint) {564 child_count++;565 of_property_read_u32(endpoint, "reg", &endpoint_id);566 ret = drm_of_find_panel_or_bridge(dev->of_node, 1, endpoint_id,567 &lvds->panel, &lvds->bridge);568 if (!ret) {569 of_node_put(endpoint);570 break;571 }572 }573 if (!child_count) {574 DRM_DEV_ERROR(dev, "lvds port does not have any children\n");575 ret = -EINVAL;576 goto err_put_port;577 } else if (ret) {578 dev_err_probe(dev, ret, "failed to find panel and bridge node\n");579 goto err_put_port;580 }581 if (lvds->panel)582 remote = lvds->panel->dev->of_node;583 else584 remote = lvds->bridge->of_node;585 if (of_property_read_string(dev->of_node, "rockchip,output", &name))586 /* default set it as output rgb */587 lvds->output = DISPLAY_OUTPUT_RGB;588 else589 lvds->output = rockchip_lvds_name_to_output(name);590 591 if (lvds->output < 0) {592 DRM_DEV_ERROR(dev, "invalid output type [%s]\n", name);593 ret = lvds->output;594 goto err_put_remote;595 }596 597 if (of_property_read_string(remote, "data-mapping", &name))598 /* default set it as format vesa 18 */599 lvds->format = LVDS_VESA_18;600 else601 lvds->format = rockchip_lvds_name_to_format(name);602 603 if (lvds->format < 0) {604 DRM_DEV_ERROR(dev, "invalid data-mapping format [%s]\n", name);605 ret = lvds->format;606 goto err_put_remote;607 }608 609 encoder = &lvds->encoder.encoder;610 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,611 dev->of_node);612 613 ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_LVDS);614 if (ret < 0) {615 DRM_DEV_ERROR(drm_dev->dev,616 "failed to initialize encoder: %d\n", ret);617 goto err_put_remote;618 }619 620 drm_encoder_helper_add(encoder, lvds->soc_data->helper_funcs);621 connector = &lvds->connector;622 623 if (lvds->panel) {624 connector->dpms = DRM_MODE_DPMS_OFF;625 ret = drm_connector_init(drm_dev, connector,626 &rockchip_lvds_connector_funcs,627 DRM_MODE_CONNECTOR_LVDS);628 if (ret < 0) {629 DRM_DEV_ERROR(drm_dev->dev,630 "failed to initialize connector: %d\n", ret);631 goto err_free_encoder;632 }633 634 drm_connector_helper_add(connector,635 &rockchip_lvds_connector_helper_funcs);636 } else {637 ret = drm_bridge_attach(encoder, lvds->bridge, NULL,638 DRM_BRIDGE_ATTACH_NO_CONNECTOR);639 if (ret)640 goto err_free_encoder;641 642 connector = drm_bridge_connector_init(lvds->drm_dev, encoder);643 if (IS_ERR(connector)) {644 DRM_DEV_ERROR(drm_dev->dev,645 "failed to initialize bridge connector: %pe\n",646 connector);647 ret = PTR_ERR(connector);648 goto err_free_encoder;649 }650 }651 652 ret = drm_connector_attach_encoder(connector, encoder);653 if (ret < 0) {654 DRM_DEV_ERROR(drm_dev->dev,655 "failed to attach encoder: %d\n", ret);656 goto err_free_connector;657 }658 659 pm_runtime_enable(dev);660 of_node_put(remote);661 of_node_put(port);662 663 return 0;664 665err_free_connector:666 drm_connector_cleanup(connector);667err_free_encoder:668 drm_encoder_cleanup(encoder);669err_put_remote:670 of_node_put(remote);671err_put_port:672 of_node_put(port);673 674 return ret;675}676 677static void rockchip_lvds_unbind(struct device *dev, struct device *master,678 void *data)679{680 struct rockchip_lvds *lvds = dev_get_drvdata(dev);681 const struct drm_encoder_helper_funcs *encoder_funcs;682 683 encoder_funcs = lvds->soc_data->helper_funcs;684 encoder_funcs->disable(&lvds->encoder.encoder);685 pm_runtime_disable(dev);686 drm_connector_cleanup(&lvds->connector);687 drm_encoder_cleanup(&lvds->encoder.encoder);688}689 690static const struct component_ops rockchip_lvds_component_ops = {691 .bind = rockchip_lvds_bind,692 .unbind = rockchip_lvds_unbind,693};694 695static int rockchip_lvds_probe(struct platform_device *pdev)696{697 struct device *dev = &pdev->dev;698 struct rockchip_lvds *lvds;699 const struct of_device_id *match;700 int ret;701 702 if (!dev->of_node)703 return -ENODEV;704 705 lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL);706 if (!lvds)707 return -ENOMEM;708 709 lvds->dev = dev;710 match = of_match_node(rockchip_lvds_dt_ids, dev->of_node);711 if (!match)712 return -ENODEV;713 lvds->soc_data = match->data;714 715 lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node,716 "rockchip,grf");717 if (IS_ERR(lvds->grf)) {718 DRM_DEV_ERROR(dev, "missing rockchip,grf property\n");719 return PTR_ERR(lvds->grf);720 }721 722 ret = lvds->soc_data->probe(pdev, lvds);723 if (ret) {724 DRM_DEV_ERROR(dev, "Platform initialization failed\n");725 return ret;726 }727 728 dev_set_drvdata(dev, lvds);729 730 ret = component_add(&pdev->dev, &rockchip_lvds_component_ops);731 if (ret < 0) {732 DRM_DEV_ERROR(dev, "failed to add component\n");733 clk_unprepare(lvds->pclk);734 }735 736 return ret;737}738 739static void rockchip_lvds_remove(struct platform_device *pdev)740{741 struct rockchip_lvds *lvds = platform_get_drvdata(pdev);742 743 component_del(&pdev->dev, &rockchip_lvds_component_ops);744 clk_unprepare(lvds->pclk);745}746 747struct platform_driver rockchip_lvds_driver = {748 .probe = rockchip_lvds_probe,749 .remove_new = rockchip_lvds_remove,750 .driver = {751 .name = "rockchip-lvds",752 .of_match_table = rockchip_lvds_dt_ids,753 },754};755