Loading...
Note: File does not exist in v3.1.
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/display/drm_dp_helper.h>
21#include <drm/drm_atomic_helper.h>
22#include <drm/drm_bridge.h>
23#include <drm/drm_bridge_connector.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_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/**
39 * struct rockchip_lvds_soc_data - rockchip lvds Soc private data
40 * @probe: LVDS platform probe function
41 * @helper_funcs: LVDS connector helper functions
42 */
43struct rockchip_lvds_soc_data {
44 int (*probe)(struct platform_device *pdev, struct rockchip_lvds *lvds);
45 const struct drm_encoder_helper_funcs *helper_funcs;
46};
47
48struct rockchip_lvds {
49 struct device *dev;
50 void __iomem *regs;
51 struct regmap *grf;
52 struct clk *pclk;
53 struct phy *dphy;
54 const struct rockchip_lvds_soc_data *soc_data;
55 int output; /* rgb lvds or dual lvds output */
56 int format; /* vesa or jeida format */
57 struct drm_device *drm_dev;
58 struct drm_panel *panel;
59 struct drm_bridge *bridge;
60 struct drm_connector connector;
61 struct rockchip_encoder encoder;
62 struct dev_pin_info *pins;
63};
64
65static inline struct rockchip_lvds *connector_to_lvds(struct drm_connector *connector)
66{
67 return container_of(connector, struct rockchip_lvds, connector);
68}
69
70static inline struct rockchip_lvds *encoder_to_lvds(struct drm_encoder *encoder)
71{
72 struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder);
73
74 return container_of(rkencoder, struct rockchip_lvds, encoder);
75}
76
77static inline void rk3288_writel(struct rockchip_lvds *lvds, u32 offset,
78 u32 val)
79{
80 writel_relaxed(val, lvds->regs + offset);
81 if (lvds->output == DISPLAY_OUTPUT_LVDS)
82 return;
83 writel_relaxed(val, lvds->regs + offset + RK3288_LVDS_CH1_OFFSET);
84}
85
86static inline int rockchip_lvds_name_to_format(const char *s)
87{
88 if (strncmp(s, "jeida-18", 8) == 0)
89 return LVDS_JEIDA_18;
90 else if (strncmp(s, "jeida-24", 8) == 0)
91 return LVDS_JEIDA_24;
92 else if (strncmp(s, "vesa-24", 7) == 0)
93 return LVDS_VESA_24;
94
95 return -EINVAL;
96}
97
98static inline int rockchip_lvds_name_to_output(const char *s)
99{
100 if (strncmp(s, "rgb", 3) == 0)
101 return DISPLAY_OUTPUT_RGB;
102 else if (strncmp(s, "lvds", 4) == 0)
103 return DISPLAY_OUTPUT_LVDS;
104 else if (strncmp(s, "duallvds", 8) == 0)
105 return DISPLAY_OUTPUT_DUAL_LVDS;
106
107 return -EINVAL;
108}
109
110static const struct drm_connector_funcs rockchip_lvds_connector_funcs = {
111 .fill_modes = drm_helper_probe_single_connector_modes,
112 .destroy = drm_connector_cleanup,
113 .reset = drm_atomic_helper_connector_reset,
114 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
115 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
116};
117
118static int rockchip_lvds_connector_get_modes(struct drm_connector *connector)
119{
120 struct rockchip_lvds *lvds = connector_to_lvds(connector);
121 struct drm_panel *panel = lvds->panel;
122
123 return drm_panel_get_modes(panel, connector);
124}
125
126static const
127struct drm_connector_helper_funcs rockchip_lvds_connector_helper_funcs = {
128 .get_modes = rockchip_lvds_connector_get_modes,
129};
130
131static int
132rockchip_lvds_encoder_atomic_check(struct drm_encoder *encoder,
133 struct drm_crtc_state *crtc_state,
134 struct drm_connector_state *conn_state)
135{
136 struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
137
138 s->output_mode = ROCKCHIP_OUT_MODE_P888;
139 s->output_type = DRM_MODE_CONNECTOR_LVDS;
140
141 return 0;
142}
143
144static int rk3288_lvds_poweron(struct rockchip_lvds *lvds)
145{
146 int ret;
147 u32 val;
148
149 ret = clk_enable(lvds->pclk);
150 if (ret < 0) {
151 DRM_DEV_ERROR(lvds->dev, "failed to enable lvds pclk %d\n", ret);
152 return ret;
153 }
154 ret = pm_runtime_resume_and_get(lvds->dev);
155 if (ret < 0) {
156 DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret);
157 clk_disable(lvds->pclk);
158 return ret;
159 }
160 val = RK3288_LVDS_CH0_REG0_LANE4_EN | RK3288_LVDS_CH0_REG0_LANE3_EN |
161 RK3288_LVDS_CH0_REG0_LANE2_EN | RK3288_LVDS_CH0_REG0_LANE1_EN |
162 RK3288_LVDS_CH0_REG0_LANE0_EN;
163 if (lvds->output == DISPLAY_OUTPUT_RGB) {
164 val |= RK3288_LVDS_CH0_REG0_TTL_EN |
165 RK3288_LVDS_CH0_REG0_LANECK_EN;
166 rk3288_writel(lvds, RK3288_LVDS_CH0_REG0, val);
167 rk3288_writel(lvds, RK3288_LVDS_CH0_REG2,
168 RK3288_LVDS_PLL_FBDIV_REG2(0x46));
169 rk3288_writel(lvds, RK3288_LVDS_CH0_REG4,
170 RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE |
171 RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE |
172 RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE |
173 RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE |
174 RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE |
175 RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE);
176 rk3288_writel(lvds, RK3288_LVDS_CH0_REG5,
177 RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA |
178 RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA |
179 RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA |
180 RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA |
181 RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA |
182 RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA);
183 } else {
184 val |= RK3288_LVDS_CH0_REG0_LVDS_EN |
185 RK3288_LVDS_CH0_REG0_LANECK_EN;
186 rk3288_writel(lvds, RK3288_LVDS_CH0_REG0, val);
187 rk3288_writel(lvds, RK3288_LVDS_CH0_REG1,
188 RK3288_LVDS_CH0_REG1_LANECK_BIAS |
189 RK3288_LVDS_CH0_REG1_LANE4_BIAS |
190 RK3288_LVDS_CH0_REG1_LANE3_BIAS |
191 RK3288_LVDS_CH0_REG1_LANE2_BIAS |
192 RK3288_LVDS_CH0_REG1_LANE1_BIAS |
193 RK3288_LVDS_CH0_REG1_LANE0_BIAS);
194 rk3288_writel(lvds, RK3288_LVDS_CH0_REG2,
195 RK3288_LVDS_CH0_REG2_RESERVE_ON |
196 RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE |
197 RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE |
198 RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE |
199 RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE |
200 RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE |
201 RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE |
202 RK3288_LVDS_PLL_FBDIV_REG2(0x46));
203 rk3288_writel(lvds, RK3288_LVDS_CH0_REG4, 0x00);
204 rk3288_writel(lvds, RK3288_LVDS_CH0_REG5, 0x00);
205 }
206 rk3288_writel(lvds, RK3288_LVDS_CH0_REG3,
207 RK3288_LVDS_PLL_FBDIV_REG3(0x46));
208 rk3288_writel(lvds, RK3288_LVDS_CH0_REGD,
209 RK3288_LVDS_PLL_PREDIV_REGD(0x0a));
210 rk3288_writel(lvds, RK3288_LVDS_CH0_REG20,
211 RK3288_LVDS_CH0_REG20_LSB);
212
213 rk3288_writel(lvds, RK3288_LVDS_CFG_REGC,
214 RK3288_LVDS_CFG_REGC_PLL_ENABLE);
215 rk3288_writel(lvds, RK3288_LVDS_CFG_REG21,
216 RK3288_LVDS_CFG_REG21_TX_ENABLE);
217
218 return 0;
219}
220
221static void rk3288_lvds_poweroff(struct rockchip_lvds *lvds)
222{
223 int ret;
224 u32 val;
225
226 rk3288_writel(lvds, RK3288_LVDS_CFG_REG21,
227 RK3288_LVDS_CFG_REG21_TX_ENABLE);
228 rk3288_writel(lvds, RK3288_LVDS_CFG_REGC,
229 RK3288_LVDS_CFG_REGC_PLL_ENABLE);
230 val = LVDS_DUAL | LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN | LVDS_PWRDN;
231 val |= val << 16;
232 ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val);
233 if (ret != 0)
234 DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret);
235
236 pm_runtime_put(lvds->dev);
237 clk_disable(lvds->pclk);
238}
239
240static int rk3288_lvds_grf_config(struct drm_encoder *encoder,
241 struct drm_display_mode *mode)
242{
243 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
244 u8 pin_hsync = (mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0;
245 u8 pin_dclk = (mode->flags & DRM_MODE_FLAG_PCSYNC) ? 1 : 0;
246 u32 val;
247 int ret;
248
249 /* iomux to LCD data/sync mode */
250 if (lvds->output == DISPLAY_OUTPUT_RGB)
251 if (lvds->pins && !IS_ERR(lvds->pins->default_state))
252 pinctrl_select_state(lvds->pins->p,
253 lvds->pins->default_state);
254 val = lvds->format | LVDS_CH0_EN;
255 if (lvds->output == DISPLAY_OUTPUT_RGB)
256 val |= LVDS_TTL_EN | LVDS_CH1_EN;
257 else if (lvds->output == DISPLAY_OUTPUT_DUAL_LVDS)
258 val |= LVDS_DUAL | LVDS_CH1_EN;
259
260 if ((mode->htotal - mode->hsync_start) & 0x01)
261 val |= LVDS_START_PHASE_RST_1;
262
263 val |= (pin_dclk << 8) | (pin_hsync << 9);
264 val |= (0xffff << 16);
265 ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON7, val);
266 if (ret)
267 DRM_DEV_ERROR(lvds->dev, "Could not write to GRF: %d\n", ret);
268
269 return ret;
270}
271
272static int rk3288_lvds_set_vop_source(struct rockchip_lvds *lvds,
273 struct drm_encoder *encoder)
274{
275 u32 val;
276 int ret;
277
278 ret = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder);
279 if (ret < 0)
280 return ret;
281
282 val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16;
283 if (ret)
284 val |= RK3288_LVDS_SOC_CON6_SEL_VOP_LIT;
285
286 ret = regmap_write(lvds->grf, RK3288_LVDS_GRF_SOC_CON6, val);
287 if (ret < 0)
288 return ret;
289
290 return 0;
291}
292
293static void rk3288_lvds_encoder_enable(struct drm_encoder *encoder)
294{
295 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
296 struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
297 int ret;
298
299 drm_panel_prepare(lvds->panel);
300
301 ret = rk3288_lvds_poweron(lvds);
302 if (ret < 0) {
303 DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret);
304 drm_panel_unprepare(lvds->panel);
305 return;
306 }
307
308 ret = rk3288_lvds_grf_config(encoder, mode);
309 if (ret) {
310 DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret);
311 drm_panel_unprepare(lvds->panel);
312 return;
313 }
314
315 ret = rk3288_lvds_set_vop_source(lvds, encoder);
316 if (ret) {
317 DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret);
318 drm_panel_unprepare(lvds->panel);
319 return;
320 }
321
322 drm_panel_enable(lvds->panel);
323}
324
325static void rk3288_lvds_encoder_disable(struct drm_encoder *encoder)
326{
327 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
328
329 drm_panel_disable(lvds->panel);
330 rk3288_lvds_poweroff(lvds);
331 drm_panel_unprepare(lvds->panel);
332}
333
334static int px30_lvds_poweron(struct rockchip_lvds *lvds)
335{
336 int ret;
337
338 ret = pm_runtime_resume_and_get(lvds->dev);
339 if (ret < 0) {
340 DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret);
341 return ret;
342 }
343
344 /* Enable LVDS mode */
345 ret = regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
346 PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1),
347 PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1));
348 if (ret)
349 pm_runtime_put(lvds->dev);
350
351 return ret;
352}
353
354static void px30_lvds_poweroff(struct rockchip_lvds *lvds)
355{
356 regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
357 PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1),
358 PX30_LVDS_MODE_EN(0) | PX30_LVDS_P2S_EN(0));
359
360 pm_runtime_put(lvds->dev);
361}
362
363static int px30_lvds_grf_config(struct drm_encoder *encoder,
364 struct drm_display_mode *mode)
365{
366 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
367
368 if (lvds->output != DISPLAY_OUTPUT_LVDS) {
369 DRM_DEV_ERROR(lvds->dev, "Unsupported display output %d\n",
370 lvds->output);
371 return -EINVAL;
372 }
373
374 /* Set format */
375 return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
376 PX30_LVDS_FORMAT(lvds->format),
377 PX30_LVDS_FORMAT(lvds->format));
378}
379
380static int px30_lvds_set_vop_source(struct rockchip_lvds *lvds,
381 struct drm_encoder *encoder)
382{
383 int vop;
384
385 vop = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder);
386 if (vop < 0)
387 return vop;
388
389 return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
390 PX30_LVDS_VOP_SEL(1),
391 PX30_LVDS_VOP_SEL(vop));
392}
393
394static void px30_lvds_encoder_enable(struct drm_encoder *encoder)
395{
396 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
397 struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
398 int ret;
399
400 drm_panel_prepare(lvds->panel);
401
402 ret = px30_lvds_poweron(lvds);
403 if (ret) {
404 DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret);
405 drm_panel_unprepare(lvds->panel);
406 return;
407 }
408
409 ret = px30_lvds_grf_config(encoder, mode);
410 if (ret) {
411 DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret);
412 drm_panel_unprepare(lvds->panel);
413 return;
414 }
415
416 ret = px30_lvds_set_vop_source(lvds, encoder);
417 if (ret) {
418 DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret);
419 drm_panel_unprepare(lvds->panel);
420 return;
421 }
422
423 drm_panel_enable(lvds->panel);
424}
425
426static void px30_lvds_encoder_disable(struct drm_encoder *encoder)
427{
428 struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
429
430 drm_panel_disable(lvds->panel);
431 px30_lvds_poweroff(lvds);
432 drm_panel_unprepare(lvds->panel);
433}
434
435static const
436struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {
437 .enable = rk3288_lvds_encoder_enable,
438 .disable = rk3288_lvds_encoder_disable,
439 .atomic_check = rockchip_lvds_encoder_atomic_check,
440};
441
442static const
443struct drm_encoder_helper_funcs px30_lvds_encoder_helper_funcs = {
444 .enable = px30_lvds_encoder_enable,
445 .disable = px30_lvds_encoder_disable,
446 .atomic_check = rockchip_lvds_encoder_atomic_check,
447};
448
449static int rk3288_lvds_probe(struct platform_device *pdev,
450 struct rockchip_lvds *lvds)
451{
452 int ret;
453
454 lvds->regs = devm_platform_ioremap_resource(pdev, 0);
455 if (IS_ERR(lvds->regs))
456 return PTR_ERR(lvds->regs);
457
458 lvds->pclk = devm_clk_get(lvds->dev, "pclk_lvds");
459 if (IS_ERR(lvds->pclk)) {
460 DRM_DEV_ERROR(lvds->dev, "could not get pclk_lvds\n");
461 return PTR_ERR(lvds->pclk);
462 }
463
464 lvds->pins = devm_kzalloc(lvds->dev, sizeof(*lvds->pins),
465 GFP_KERNEL);
466 if (!lvds->pins)
467 return -ENOMEM;
468
469 lvds->pins->p = devm_pinctrl_get(lvds->dev);
470 if (IS_ERR(lvds->pins->p)) {
471 DRM_DEV_ERROR(lvds->dev, "no pinctrl handle\n");
472 devm_kfree(lvds->dev, lvds->pins);
473 lvds->pins = NULL;
474 } else {
475 lvds->pins->default_state =
476 pinctrl_lookup_state(lvds->pins->p, "lcdc");
477 if (IS_ERR(lvds->pins->default_state)) {
478 DRM_DEV_ERROR(lvds->dev, "no default pinctrl state\n");
479 devm_kfree(lvds->dev, lvds->pins);
480 lvds->pins = NULL;
481 }
482 }
483
484 ret = clk_prepare(lvds->pclk);
485 if (ret < 0) {
486 DRM_DEV_ERROR(lvds->dev, "failed to prepare pclk_lvds\n");
487 return ret;
488 }
489
490 return 0;
491}
492
493static int px30_lvds_probe(struct platform_device *pdev,
494 struct rockchip_lvds *lvds)
495{
496 int ret;
497
498 /* MSB */
499 ret = regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
500 PX30_LVDS_MSBSEL(1),
501 PX30_LVDS_MSBSEL(1));
502 if (ret)
503 return ret;
504
505 /* PHY */
506 lvds->dphy = devm_phy_get(&pdev->dev, "dphy");
507 if (IS_ERR(lvds->dphy))
508 return PTR_ERR(lvds->dphy);
509
510 ret = phy_init(lvds->dphy);
511 if (ret)
512 return ret;
513
514 ret = phy_set_mode(lvds->dphy, PHY_MODE_LVDS);
515 if (ret)
516 return ret;
517
518 return phy_power_on(lvds->dphy);
519}
520
521static const struct rockchip_lvds_soc_data rk3288_lvds_data = {
522 .probe = rk3288_lvds_probe,
523 .helper_funcs = &rk3288_lvds_encoder_helper_funcs,
524};
525
526static const struct rockchip_lvds_soc_data px30_lvds_data = {
527 .probe = px30_lvds_probe,
528 .helper_funcs = &px30_lvds_encoder_helper_funcs,
529};
530
531static const struct of_device_id rockchip_lvds_dt_ids[] = {
532 {
533 .compatible = "rockchip,rk3288-lvds",
534 .data = &rk3288_lvds_data
535 },
536 {
537 .compatible = "rockchip,px30-lvds",
538 .data = &px30_lvds_data
539 },
540 {}
541};
542MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids);
543
544static int rockchip_lvds_bind(struct device *dev, struct device *master,
545 void *data)
546{
547 struct rockchip_lvds *lvds = dev_get_drvdata(dev);
548 struct drm_device *drm_dev = data;
549 struct drm_encoder *encoder;
550 struct drm_connector *connector;
551 struct device_node *remote = NULL;
552 struct device_node *port, *endpoint;
553 int ret = 0, child_count = 0;
554 const char *name;
555 u32 endpoint_id = 0;
556
557 lvds->drm_dev = drm_dev;
558 port = of_graph_get_port_by_id(dev->of_node, 1);
559 if (!port) {
560 DRM_DEV_ERROR(dev,
561 "can't found port point, please init lvds panel port!\n");
562 return -EINVAL;
563 }
564 for_each_child_of_node(port, endpoint) {
565 child_count++;
566 of_property_read_u32(endpoint, "reg", &endpoint_id);
567 ret = drm_of_find_panel_or_bridge(dev->of_node, 1, endpoint_id,
568 &lvds->panel, &lvds->bridge);
569 if (!ret) {
570 of_node_put(endpoint);
571 break;
572 }
573 }
574 if (!child_count) {
575 DRM_DEV_ERROR(dev, "lvds port does not have any children\n");
576 ret = -EINVAL;
577 goto err_put_port;
578 } else if (ret) {
579 DRM_DEV_ERROR(dev, "failed to find panel and bridge node\n");
580 ret = -EPROBE_DEFER;
581 goto err_put_port;
582 }
583 if (lvds->panel)
584 remote = lvds->panel->dev->of_node;
585 else
586 remote = lvds->bridge->of_node;
587 if (of_property_read_string(dev->of_node, "rockchip,output", &name))
588 /* default set it as output rgb */
589 lvds->output = DISPLAY_OUTPUT_RGB;
590 else
591 lvds->output = rockchip_lvds_name_to_output(name);
592
593 if (lvds->output < 0) {
594 DRM_DEV_ERROR(dev, "invalid output type [%s]\n", name);
595 ret = lvds->output;
596 goto err_put_remote;
597 }
598
599 if (of_property_read_string(remote, "data-mapping", &name))
600 /* default set it as format vesa 18 */
601 lvds->format = LVDS_VESA_18;
602 else
603 lvds->format = rockchip_lvds_name_to_format(name);
604
605 if (lvds->format < 0) {
606 DRM_DEV_ERROR(dev, "invalid data-mapping format [%s]\n", name);
607 ret = lvds->format;
608 goto err_put_remote;
609 }
610
611 encoder = &lvds->encoder.encoder;
612 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
613 dev->of_node);
614
615 ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_LVDS);
616 if (ret < 0) {
617 DRM_DEV_ERROR(drm_dev->dev,
618 "failed to initialize encoder: %d\n", ret);
619 goto err_put_remote;
620 }
621
622 drm_encoder_helper_add(encoder, lvds->soc_data->helper_funcs);
623 connector = &lvds->connector;
624
625 if (lvds->panel) {
626 connector->dpms = DRM_MODE_DPMS_OFF;
627 ret = drm_connector_init(drm_dev, connector,
628 &rockchip_lvds_connector_funcs,
629 DRM_MODE_CONNECTOR_LVDS);
630 if (ret < 0) {
631 DRM_DEV_ERROR(drm_dev->dev,
632 "failed to initialize connector: %d\n", ret);
633 goto err_free_encoder;
634 }
635
636 drm_connector_helper_add(connector,
637 &rockchip_lvds_connector_helper_funcs);
638 } else {
639 ret = drm_bridge_attach(encoder, lvds->bridge, NULL,
640 DRM_BRIDGE_ATTACH_NO_CONNECTOR);
641 if (ret)
642 goto err_free_encoder;
643
644 connector = drm_bridge_connector_init(lvds->drm_dev, encoder);
645 if (IS_ERR(connector)) {
646 DRM_DEV_ERROR(drm_dev->dev,
647 "failed to initialize bridge connector: %pe\n",
648 connector);
649 ret = PTR_ERR(connector);
650 goto err_free_encoder;
651 }
652 }
653
654 ret = drm_connector_attach_encoder(connector, encoder);
655 if (ret < 0) {
656 DRM_DEV_ERROR(drm_dev->dev,
657 "failed to attach encoder: %d\n", ret);
658 goto err_free_connector;
659 }
660
661 pm_runtime_enable(dev);
662 of_node_put(remote);
663 of_node_put(port);
664
665 return 0;
666
667err_free_connector:
668 drm_connector_cleanup(connector);
669err_free_encoder:
670 drm_encoder_cleanup(encoder);
671err_put_remote:
672 of_node_put(remote);
673err_put_port:
674 of_node_put(port);
675
676 return ret;
677}
678
679static void rockchip_lvds_unbind(struct device *dev, struct device *master,
680 void *data)
681{
682 struct rockchip_lvds *lvds = dev_get_drvdata(dev);
683 const struct drm_encoder_helper_funcs *encoder_funcs;
684
685 encoder_funcs = lvds->soc_data->helper_funcs;
686 encoder_funcs->disable(&lvds->encoder.encoder);
687 pm_runtime_disable(dev);
688 drm_connector_cleanup(&lvds->connector);
689 drm_encoder_cleanup(&lvds->encoder.encoder);
690}
691
692static const struct component_ops rockchip_lvds_component_ops = {
693 .bind = rockchip_lvds_bind,
694 .unbind = rockchip_lvds_unbind,
695};
696
697static int rockchip_lvds_probe(struct platform_device *pdev)
698{
699 struct device *dev = &pdev->dev;
700 struct rockchip_lvds *lvds;
701 const struct of_device_id *match;
702 int ret;
703
704 if (!dev->of_node)
705 return -ENODEV;
706
707 lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL);
708 if (!lvds)
709 return -ENOMEM;
710
711 lvds->dev = dev;
712 match = of_match_node(rockchip_lvds_dt_ids, dev->of_node);
713 if (!match)
714 return -ENODEV;
715 lvds->soc_data = match->data;
716
717 lvds->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
718 "rockchip,grf");
719 if (IS_ERR(lvds->grf)) {
720 DRM_DEV_ERROR(dev, "missing rockchip,grf property\n");
721 return PTR_ERR(lvds->grf);
722 }
723
724 ret = lvds->soc_data->probe(pdev, lvds);
725 if (ret) {
726 DRM_DEV_ERROR(dev, "Platform initialization failed\n");
727 return ret;
728 }
729
730 dev_set_drvdata(dev, lvds);
731
732 ret = component_add(&pdev->dev, &rockchip_lvds_component_ops);
733 if (ret < 0) {
734 DRM_DEV_ERROR(dev, "failed to add component\n");
735 clk_unprepare(lvds->pclk);
736 }
737
738 return ret;
739}
740
741static void rockchip_lvds_remove(struct platform_device *pdev)
742{
743 struct rockchip_lvds *lvds = platform_get_drvdata(pdev);
744
745 component_del(&pdev->dev, &rockchip_lvds_component_ops);
746 clk_unprepare(lvds->pclk);
747}
748
749struct platform_driver rockchip_lvds_driver = {
750 .probe = rockchip_lvds_probe,
751 .remove_new = rockchip_lvds_remove,
752 .driver = {
753 .name = "rockchip-lvds",
754 .of_match_table = rockchip_lvds_dt_ids,
755 },
756};