xref: /linux/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c (revision 55a42f78ffd386e01a5404419f8c5ded7db70a21)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (c) 2014, Rockchip Electronics Co., Ltd.
4  */
5 
6 #include <linux/clk.h>
7 #include <linux/hw_bitfield.h>
8 #include <linux/mfd/syscon.h>
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include <linux/phy/phy.h>
12 #include <linux/regmap.h>
13 #include <linux/regulator/consumer.h>
14 
15 #include <drm/bridge/dw_hdmi.h>
16 #include <drm/drm_edid.h>
17 #include <drm/drm_of.h>
18 #include <drm/drm_probe_helper.h>
19 #include <drm/drm_simple_kms_helper.h>
20 
21 #include "rockchip_drm_drv.h"
22 
23 #define RK3228_GRF_SOC_CON2		0x0408
24 #define RK3228_HDMI_SDAIN_MSK		BIT(14)
25 #define RK3228_HDMI_SCLIN_MSK		BIT(13)
26 #define RK3228_GRF_SOC_CON6		0x0418
27 #define RK3228_HDMI_HPD_VSEL		BIT(6)
28 #define RK3228_HDMI_SDA_VSEL		BIT(5)
29 #define RK3228_HDMI_SCL_VSEL		BIT(4)
30 
31 #define RK3288_GRF_SOC_CON6		0x025C
32 #define RK3288_HDMI_LCDC_SEL		BIT(4)
33 #define RK3328_GRF_SOC_CON2		0x0408
34 
35 #define RK3328_HDMI_SDAIN_MSK		BIT(11)
36 #define RK3328_HDMI_SCLIN_MSK		BIT(10)
37 #define RK3328_HDMI_HPD_IOE		BIT(2)
38 #define RK3328_GRF_SOC_CON3		0x040c
39 /* need to be unset if hdmi or i2c should control voltage */
40 #define RK3328_HDMI_SDA5V_GRF		BIT(15)
41 #define RK3328_HDMI_SCL5V_GRF		BIT(14)
42 #define RK3328_HDMI_HPD5V_GRF		BIT(13)
43 #define RK3328_HDMI_CEC5V_GRF		BIT(12)
44 #define RK3328_GRF_SOC_CON4		0x0410
45 #define RK3328_HDMI_HPD_SARADC		BIT(13)
46 #define RK3328_HDMI_CEC_5V		BIT(11)
47 #define RK3328_HDMI_SDA_5V		BIT(10)
48 #define RK3328_HDMI_SCL_5V		BIT(9)
49 #define RK3328_HDMI_HPD_5V		BIT(8)
50 
51 #define RK3399_GRF_SOC_CON20		0x6250
52 #define RK3399_HDMI_LCDC_SEL		BIT(6)
53 
54 #define RK3568_GRF_VO_CON1		0x0364
55 #define RK3568_HDMI_SDAIN_MSK		BIT(15)
56 #define RK3568_HDMI_SCLIN_MSK		BIT(14)
57 
58 /**
59  * struct rockchip_hdmi_chip_data - splite the grf setting of kind of chips
60  * @lcdsel_grf_reg: grf register offset of lcdc select
61  * @lcdsel_big: reg value of selecting vop big for HDMI
62  * @lcdsel_lit: reg value of selecting vop little for HDMI
63  * @max_tmds_clock: maximum TMDS clock rate supported
64  */
65 struct rockchip_hdmi_chip_data {
66 	int	lcdsel_grf_reg;
67 	u32	lcdsel_big;
68 	u32	lcdsel_lit;
69 	int	max_tmds_clock;
70 };
71 
72 struct rockchip_hdmi {
73 	struct device *dev;
74 	struct regmap *regmap;
75 	struct rockchip_encoder encoder;
76 	const struct rockchip_hdmi_chip_data *chip_data;
77 	const struct dw_hdmi_plat_data *plat_data;
78 	struct clk *hdmiphy_clk;
79 	struct clk *ref_clk;
80 	struct clk *grf_clk;
81 	struct dw_hdmi *hdmi;
82 	struct phy *phy;
83 };
84 
85 static struct rockchip_hdmi *to_rockchip_hdmi(struct drm_encoder *encoder)
86 {
87 	struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder);
88 
89 	return container_of(rkencoder, struct rockchip_hdmi, encoder);
90 }
91 
92 static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = {
93 	{
94 		30666000, {
95 			{ 0x00b3, 0x0000 },
96 			{ 0x2153, 0x0000 },
97 			{ 0x40f3, 0x0000 },
98 		},
99 	}, {
100 		36800000, {
101 			{ 0x00b3, 0x0000 },
102 			{ 0x2153, 0x0000 },
103 			{ 0x40a2, 0x0001 },
104 		},
105 	}, {
106 		46000000, {
107 			{ 0x00b3, 0x0000 },
108 			{ 0x2142, 0x0001 },
109 			{ 0x40a2, 0x0001 },
110 		},
111 	}, {
112 		61333000, {
113 			{ 0x0072, 0x0001 },
114 			{ 0x2142, 0x0001 },
115 			{ 0x40a2, 0x0001 },
116 		},
117 	}, {
118 		73600000, {
119 			{ 0x0072, 0x0001 },
120 			{ 0x2142, 0x0001 },
121 			{ 0x4061, 0x0002 },
122 		},
123 	}, {
124 		92000000, {
125 			{ 0x0072, 0x0001 },
126 			{ 0x2145, 0x0002 },
127 			{ 0x4061, 0x0002 },
128 		},
129 	}, {
130 		122666000, {
131 			{ 0x0051, 0x0002 },
132 			{ 0x2145, 0x0002 },
133 			{ 0x4061, 0x0002 },
134 		},
135 	}, {
136 		147200000, {
137 			{ 0x0051, 0x0002 },
138 			{ 0x2145, 0x0002 },
139 			{ 0x4064, 0x0003 },
140 		},
141 	}, {
142 		184000000, {
143 			{ 0x0051, 0x0002 },
144 			{ 0x214c, 0x0003 },
145 			{ 0x4064, 0x0003 },
146 		},
147 	}, {
148 		226666000, {
149 			{ 0x0040, 0x0003 },
150 			{ 0x214c, 0x0003 },
151 			{ 0x4064, 0x0003 },
152 		},
153 	}, {
154 		272000000, {
155 			{ 0x0040, 0x0003 },
156 			{ 0x214c, 0x0003 },
157 			{ 0x5a64, 0x0003 },
158 		},
159 	}, {
160 		340000000, {
161 			{ 0x0040, 0x0003 },
162 			{ 0x3b4c, 0x0003 },
163 			{ 0x5a64, 0x0003 },
164 		},
165 	}, {
166 		600000000, {
167 			{ 0x1a40, 0x0003 },
168 			{ 0x3b4c, 0x0003 },
169 			{ 0x5a64, 0x0003 },
170 		},
171 	}, {
172 		~0UL, {
173 			{ 0x0000, 0x0000 },
174 			{ 0x0000, 0x0000 },
175 			{ 0x0000, 0x0000 },
176 		},
177 	}
178 };
179 
180 static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = {
181 	/*      pixelclk    bpp8    bpp10   bpp12 */
182 	{
183 		600000000, { 0x0000, 0x0000, 0x0000 },
184 	}, {
185 		~0UL,      { 0x0000, 0x0000, 0x0000 },
186 	}
187 };
188 
189 static const struct dw_hdmi_phy_config rockchip_phy_config[] = {
190 	/*pixelclk   symbol   term   vlev*/
191 	{ 74250000,  0x8009, 0x0004, 0x0272},
192 	{ 165000000, 0x802b, 0x0004, 0x0209},
193 	{ 297000000, 0x8039, 0x0005, 0x028d},
194 	{ 594000000, 0x8039, 0x0000, 0x019d},
195 	{ ~0UL,	     0x0000, 0x0000, 0x0000}
196 };
197 
198 static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
199 {
200 	struct device_node *np = hdmi->dev->of_node;
201 	int ret;
202 
203 	hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
204 	if (IS_ERR(hdmi->regmap)) {
205 		dev_err(hdmi->dev, "Unable to get rockchip,grf\n");
206 		return PTR_ERR(hdmi->regmap);
207 	}
208 
209 	hdmi->ref_clk = devm_clk_get_optional_enabled(hdmi->dev, "ref");
210 	if (!hdmi->ref_clk)
211 		hdmi->ref_clk = devm_clk_get_optional_enabled(hdmi->dev, "vpll");
212 
213 	if (IS_ERR(hdmi->ref_clk)) {
214 		ret = PTR_ERR(hdmi->ref_clk);
215 		return dev_err_probe(hdmi->dev, ret, "failed to get reference clock\n");
216 	}
217 
218 	hdmi->grf_clk = devm_clk_get_optional(hdmi->dev, "grf");
219 	if (IS_ERR(hdmi->grf_clk)) {
220 		ret = PTR_ERR(hdmi->grf_clk);
221 		return dev_err_probe(hdmi->dev, ret, "failed to get grf clock\n");
222 	}
223 
224 	ret = devm_regulator_get_enable(hdmi->dev, "avdd-0v9");
225 	if (ret)
226 		return ret;
227 
228 	ret = devm_regulator_get_enable(hdmi->dev, "avdd-1v8");
229 
230 	return ret;
231 }
232 
233 static enum drm_mode_status
234 dw_hdmi_rockchip_mode_valid(struct dw_hdmi *dw_hdmi, void *data,
235 			    const struct drm_display_info *info,
236 			    const struct drm_display_mode *mode)
237 {
238 	struct rockchip_hdmi *hdmi = data;
239 	int pclk = mode->clock * 1000;
240 
241 	if (hdmi->chip_data->max_tmds_clock &&
242 	    mode->clock > hdmi->chip_data->max_tmds_clock)
243 		return MODE_CLOCK_HIGH;
244 
245 	if (hdmi->ref_clk) {
246 		int rpclk = clk_round_rate(hdmi->ref_clk, pclk);
247 
248 		if (rpclk < 0 || abs(rpclk - pclk) > pclk / 1000)
249 			return MODE_NOCLOCK;
250 	}
251 
252 	if (hdmi->hdmiphy_clk) {
253 		int rpclk = clk_round_rate(hdmi->hdmiphy_clk, pclk);
254 
255 		if (rpclk < 0 || abs(rpclk - pclk) > pclk / 1000)
256 			return MODE_NOCLOCK;
257 	}
258 
259 	return MODE_OK;
260 }
261 
262 static void dw_hdmi_rockchip_encoder_disable(struct drm_encoder *encoder)
263 {
264 }
265 
266 static bool
267 dw_hdmi_rockchip_encoder_mode_fixup(struct drm_encoder *encoder,
268 				    const struct drm_display_mode *mode,
269 				    struct drm_display_mode *adj_mode)
270 {
271 	return true;
272 }
273 
274 static void dw_hdmi_rockchip_encoder_mode_set(struct drm_encoder *encoder,
275 					      struct drm_display_mode *mode,
276 					      struct drm_display_mode *adj_mode)
277 {
278 	struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
279 
280 	clk_set_rate(hdmi->ref_clk, adj_mode->clock * 1000);
281 }
282 
283 static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder)
284 {
285 	struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
286 	u32 val;
287 	int ret;
288 
289 	if (hdmi->chip_data->lcdsel_grf_reg < 0)
290 		return;
291 
292 	ret = drm_of_encoder_active_endpoint_id(hdmi->dev->of_node, encoder);
293 	if (ret)
294 		val = hdmi->chip_data->lcdsel_lit;
295 	else
296 		val = hdmi->chip_data->lcdsel_big;
297 
298 	ret = clk_prepare_enable(hdmi->grf_clk);
299 	if (ret < 0) {
300 		dev_err(hdmi->dev, "failed to enable grfclk %d\n", ret);
301 		return;
302 	}
303 
304 	ret = regmap_write(hdmi->regmap, hdmi->chip_data->lcdsel_grf_reg, val);
305 	if (ret != 0)
306 		dev_err(hdmi->dev, "Could not write to GRF: %d\n", ret);
307 
308 	clk_disable_unprepare(hdmi->grf_clk);
309 	dev_dbg(hdmi->dev, "vop %s output to hdmi\n", ret ? "LIT" : "BIG");
310 }
311 
312 static int
313 dw_hdmi_rockchip_encoder_atomic_check(struct drm_encoder *encoder,
314 				      struct drm_crtc_state *crtc_state,
315 				      struct drm_connector_state *conn_state)
316 {
317 	struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
318 
319 	s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
320 	s->output_type = DRM_MODE_CONNECTOR_HDMIA;
321 
322 	return 0;
323 }
324 
325 static const struct drm_encoder_helper_funcs dw_hdmi_rockchip_encoder_helper_funcs = {
326 	.mode_fixup = dw_hdmi_rockchip_encoder_mode_fixup,
327 	.mode_set   = dw_hdmi_rockchip_encoder_mode_set,
328 	.enable     = dw_hdmi_rockchip_encoder_enable,
329 	.disable    = dw_hdmi_rockchip_encoder_disable,
330 	.atomic_check = dw_hdmi_rockchip_encoder_atomic_check,
331 };
332 
333 static int dw_hdmi_rockchip_genphy_init(struct dw_hdmi *dw_hdmi, void *data,
334 					const struct drm_display_info *display,
335 					const struct drm_display_mode *mode)
336 {
337 	struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
338 
339 	dw_hdmi_set_high_tmds_clock_ratio(dw_hdmi, display);
340 
341 	return phy_power_on(hdmi->phy);
342 }
343 
344 static void dw_hdmi_rockchip_genphy_disable(struct dw_hdmi *dw_hdmi, void *data)
345 {
346 	struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
347 
348 	phy_power_off(hdmi->phy);
349 }
350 
351 static void dw_hdmi_rk3228_setup_hpd(struct dw_hdmi *dw_hdmi, void *data)
352 {
353 	struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
354 
355 	dw_hdmi_phy_setup_hpd(dw_hdmi, data);
356 
357 	regmap_write(hdmi->regmap, RK3228_GRF_SOC_CON6,
358 		     FIELD_PREP_WM16(RK3228_HDMI_HPD_VSEL, 1) |
359 		     FIELD_PREP_WM16(RK3228_HDMI_SDA_VSEL, 1) |
360 		     FIELD_PREP_WM16(RK3228_HDMI_SCL_VSEL, 1));
361 
362 	regmap_write(hdmi->regmap, RK3228_GRF_SOC_CON2,
363 		     FIELD_PREP_WM16(RK3228_HDMI_SDAIN_MSK, 1) |
364 		     FIELD_PREP_WM16(RK3328_HDMI_SCLIN_MSK, 1));
365 }
366 
367 static enum drm_connector_status
368 dw_hdmi_rk3328_read_hpd(struct dw_hdmi *dw_hdmi, void *data)
369 {
370 	struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
371 	enum drm_connector_status status;
372 
373 	status = dw_hdmi_phy_read_hpd(dw_hdmi, data);
374 
375 	if (status == connector_status_connected)
376 		regmap_write(hdmi->regmap, RK3328_GRF_SOC_CON4,
377 			     FIELD_PREP_WM16(RK3328_HDMI_SDA_5V, 1) |
378 			     FIELD_PREP_WM16(RK3328_HDMI_SCL_5V, 1));
379 	else
380 		regmap_write(hdmi->regmap, RK3328_GRF_SOC_CON4,
381 			     FIELD_PREP_WM16(RK3328_HDMI_SDA_5V, 0) |
382 			     FIELD_PREP_WM16(RK3328_HDMI_SCL_5V, 0));
383 	return status;
384 }
385 
386 static void dw_hdmi_rk3328_setup_hpd(struct dw_hdmi *dw_hdmi, void *data)
387 {
388 	struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
389 
390 	dw_hdmi_phy_setup_hpd(dw_hdmi, data);
391 
392 	/* Enable and map pins to 3V grf-controlled io-voltage */
393 	regmap_write(hdmi->regmap, RK3328_GRF_SOC_CON4,
394 		     FIELD_PREP_WM16(RK3328_HDMI_HPD_SARADC, 0) |
395 		     FIELD_PREP_WM16(RK3328_HDMI_CEC_5V, 0) |
396 		     FIELD_PREP_WM16(RK3328_HDMI_SDA_5V, 0) |
397 		     FIELD_PREP_WM16(RK3328_HDMI_SCL_5V, 0) |
398 		     FIELD_PREP_WM16(RK3328_HDMI_HPD_5V, 0));
399 	regmap_write(hdmi->regmap, RK3328_GRF_SOC_CON3,
400 		     FIELD_PREP_WM16(RK3328_HDMI_SDA5V_GRF, 0) |
401 		     FIELD_PREP_WM16(RK3328_HDMI_SCL5V_GRF, 0) |
402 		     FIELD_PREP_WM16(RK3328_HDMI_HPD5V_GRF, 0) |
403 		     FIELD_PREP_WM16(RK3328_HDMI_CEC5V_GRF, 0));
404 	regmap_write(hdmi->regmap, RK3328_GRF_SOC_CON2,
405 		     FIELD_PREP_WM16(RK3328_HDMI_SDAIN_MSK, 1) |
406 		     FIELD_PREP_WM16(RK3328_HDMI_SCLIN_MSK, 1) |
407 		     FIELD_PREP_WM16(RK3328_HDMI_HPD_IOE, 0));
408 
409 	dw_hdmi_rk3328_read_hpd(dw_hdmi, data);
410 }
411 
412 static const struct dw_hdmi_phy_ops rk3228_hdmi_phy_ops = {
413 	.init		= dw_hdmi_rockchip_genphy_init,
414 	.disable	= dw_hdmi_rockchip_genphy_disable,
415 	.read_hpd	= dw_hdmi_phy_read_hpd,
416 	.update_hpd	= dw_hdmi_phy_update_hpd,
417 	.setup_hpd	= dw_hdmi_rk3228_setup_hpd,
418 };
419 
420 static struct rockchip_hdmi_chip_data rk3228_chip_data = {
421 	.lcdsel_grf_reg = -1,
422 	.max_tmds_clock = 594000,
423 };
424 
425 static const struct dw_hdmi_plat_data rk3228_hdmi_drv_data = {
426 	.mode_valid = dw_hdmi_rockchip_mode_valid,
427 	.phy_data = &rk3228_chip_data,
428 	.phy_ops = &rk3228_hdmi_phy_ops,
429 	.phy_name = "inno_dw_hdmi_phy2",
430 	.phy_force_vendor = true,
431 };
432 
433 static struct rockchip_hdmi_chip_data rk3288_chip_data = {
434 	.lcdsel_grf_reg = RK3288_GRF_SOC_CON6,
435 	.lcdsel_big = FIELD_PREP_WM16_CONST(RK3288_HDMI_LCDC_SEL, 0),
436 	.lcdsel_lit = FIELD_PREP_WM16_CONST(RK3288_HDMI_LCDC_SEL, 1),
437 	.max_tmds_clock = 340000,
438 };
439 
440 static const struct dw_hdmi_plat_data rk3288_hdmi_drv_data = {
441 	.mode_valid = dw_hdmi_rockchip_mode_valid,
442 	.mpll_cfg   = rockchip_mpll_cfg,
443 	.cur_ctr    = rockchip_cur_ctr,
444 	.phy_config = rockchip_phy_config,
445 	.phy_data = &rk3288_chip_data,
446 };
447 
448 static const struct dw_hdmi_phy_ops rk3328_hdmi_phy_ops = {
449 	.init		= dw_hdmi_rockchip_genphy_init,
450 	.disable	= dw_hdmi_rockchip_genphy_disable,
451 	.read_hpd	= dw_hdmi_rk3328_read_hpd,
452 	.update_hpd	= dw_hdmi_phy_update_hpd,
453 	.setup_hpd	= dw_hdmi_rk3328_setup_hpd,
454 };
455 
456 static struct rockchip_hdmi_chip_data rk3328_chip_data = {
457 	.lcdsel_grf_reg = -1,
458 	.max_tmds_clock = 594000,
459 };
460 
461 static const struct dw_hdmi_plat_data rk3328_hdmi_drv_data = {
462 	.mode_valid = dw_hdmi_rockchip_mode_valid,
463 	.phy_data = &rk3328_chip_data,
464 	.phy_ops = &rk3328_hdmi_phy_ops,
465 	.phy_name = "inno_dw_hdmi_phy2",
466 	.phy_force_vendor = true,
467 	.use_drm_infoframe = true,
468 };
469 
470 static struct rockchip_hdmi_chip_data rk3399_chip_data = {
471 	.lcdsel_grf_reg = RK3399_GRF_SOC_CON20,
472 	.lcdsel_big = FIELD_PREP_WM16_CONST(RK3399_HDMI_LCDC_SEL, 0),
473 	.lcdsel_lit = FIELD_PREP_WM16_CONST(RK3399_HDMI_LCDC_SEL, 1),
474 	.max_tmds_clock = 594000,
475 };
476 
477 static const struct dw_hdmi_plat_data rk3399_hdmi_drv_data = {
478 	.mode_valid = dw_hdmi_rockchip_mode_valid,
479 	.mpll_cfg   = rockchip_mpll_cfg,
480 	.cur_ctr    = rockchip_cur_ctr,
481 	.phy_config = rockchip_phy_config,
482 	.phy_data = &rk3399_chip_data,
483 	.use_drm_infoframe = true,
484 };
485 
486 static struct rockchip_hdmi_chip_data rk3568_chip_data = {
487 	.lcdsel_grf_reg = -1,
488 	.max_tmds_clock = 594000,
489 };
490 
491 static const struct dw_hdmi_plat_data rk3568_hdmi_drv_data = {
492 	.mode_valid = dw_hdmi_rockchip_mode_valid,
493 	.mpll_cfg   = rockchip_mpll_cfg,
494 	.cur_ctr    = rockchip_cur_ctr,
495 	.phy_config = rockchip_phy_config,
496 	.phy_data = &rk3568_chip_data,
497 	.use_drm_infoframe = true,
498 };
499 
500 static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = {
501 	{ .compatible = "rockchip,rk3228-dw-hdmi",
502 	  .data = &rk3228_hdmi_drv_data
503 	},
504 	{ .compatible = "rockchip,rk3288-dw-hdmi",
505 	  .data = &rk3288_hdmi_drv_data
506 	},
507 	{ .compatible = "rockchip,rk3328-dw-hdmi",
508 	  .data = &rk3328_hdmi_drv_data
509 	},
510 	{ .compatible = "rockchip,rk3399-dw-hdmi",
511 	  .data = &rk3399_hdmi_drv_data
512 	},
513 	{ .compatible = "rockchip,rk3568-dw-hdmi",
514 	  .data = &rk3568_hdmi_drv_data
515 	},
516 	{},
517 };
518 MODULE_DEVICE_TABLE(of, dw_hdmi_rockchip_dt_ids);
519 
520 static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
521 				 void *data)
522 {
523 	struct platform_device *pdev = to_platform_device(dev);
524 	struct dw_hdmi_plat_data *plat_data;
525 	const struct of_device_id *match;
526 	struct drm_device *drm = data;
527 	struct drm_encoder *encoder;
528 	struct rockchip_hdmi *hdmi;
529 	int ret;
530 
531 	if (!pdev->dev.of_node)
532 		return -ENODEV;
533 
534 	hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
535 	if (!hdmi)
536 		return -ENOMEM;
537 
538 	match = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node);
539 	plat_data = devm_kmemdup(&pdev->dev, match->data,
540 					     sizeof(*plat_data), GFP_KERNEL);
541 	if (!plat_data)
542 		return -ENOMEM;
543 
544 	hdmi->dev = &pdev->dev;
545 	hdmi->plat_data = plat_data;
546 	hdmi->chip_data = plat_data->phy_data;
547 	plat_data->phy_data = hdmi;
548 	plat_data->priv_data = hdmi;
549 	encoder = &hdmi->encoder.encoder;
550 
551 	encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
552 	rockchip_drm_encoder_set_crtc_endpoint_id(&hdmi->encoder,
553 						  dev->of_node, 0, 0);
554 
555 	/*
556 	 * If we failed to find the CRTC(s) which this encoder is
557 	 * supposed to be connected to, it's because the CRTC has
558 	 * not been registered yet.  Defer probing, and hope that
559 	 * the required CRTC is added later.
560 	 */
561 	if (encoder->possible_crtcs == 0)
562 		return -EPROBE_DEFER;
563 
564 	ret = rockchip_hdmi_parse_dt(hdmi);
565 	if (ret) {
566 		return dev_err_probe(hdmi->dev, ret, "Unable to parse OF data\n");
567 	}
568 
569 	hdmi->phy = devm_phy_optional_get(dev, "hdmi");
570 	if (IS_ERR(hdmi->phy)) {
571 		ret = PTR_ERR(hdmi->phy);
572 		return dev_err_probe(hdmi->dev, ret, "failed to get phy\n");
573 	}
574 
575 	if (hdmi->phy) {
576 		struct of_phandle_args clkspec;
577 
578 		clkspec.np = hdmi->phy->dev.of_node;
579 		hdmi->hdmiphy_clk = of_clk_get_from_provider(&clkspec);
580 		if (IS_ERR(hdmi->hdmiphy_clk))
581 			hdmi->hdmiphy_clk = NULL;
582 	}
583 
584 	if (hdmi->chip_data == &rk3568_chip_data) {
585 		regmap_write(hdmi->regmap, RK3568_GRF_VO_CON1,
586 			     FIELD_PREP_WM16(RK3568_HDMI_SDAIN_MSK, 1) |
587 			     FIELD_PREP_WM16(RK3568_HDMI_SCLIN_MSK, 1));
588 	}
589 
590 	drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs);
591 	drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);
592 
593 	platform_set_drvdata(pdev, hdmi);
594 
595 	hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
596 
597 	/*
598 	 * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
599 	 * which would have called the encoder cleanup.  Do it manually.
600 	 */
601 	if (IS_ERR(hdmi->hdmi)) {
602 		ret = PTR_ERR(hdmi->hdmi);
603 		goto err_bind;
604 	}
605 
606 	return 0;
607 
608 err_bind:
609 	drm_encoder_cleanup(encoder);
610 
611 	return ret;
612 }
613 
614 static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
615 				    void *data)
616 {
617 	struct rockchip_hdmi *hdmi = dev_get_drvdata(dev);
618 
619 	dw_hdmi_unbind(hdmi->hdmi);
620 	drm_encoder_cleanup(&hdmi->encoder.encoder);
621 }
622 
623 static const struct component_ops dw_hdmi_rockchip_ops = {
624 	.bind	= dw_hdmi_rockchip_bind,
625 	.unbind	= dw_hdmi_rockchip_unbind,
626 };
627 
628 static int dw_hdmi_rockchip_probe(struct platform_device *pdev)
629 {
630 	return component_add(&pdev->dev, &dw_hdmi_rockchip_ops);
631 }
632 
633 static void dw_hdmi_rockchip_remove(struct platform_device *pdev)
634 {
635 	component_del(&pdev->dev, &dw_hdmi_rockchip_ops);
636 }
637 
638 static int __maybe_unused dw_hdmi_rockchip_resume(struct device *dev)
639 {
640 	struct rockchip_hdmi *hdmi = dev_get_drvdata(dev);
641 
642 	dw_hdmi_resume(hdmi->hdmi);
643 
644 	return 0;
645 }
646 
647 static const struct dev_pm_ops dw_hdmi_rockchip_pm = {
648 	SET_SYSTEM_SLEEP_PM_OPS(NULL, dw_hdmi_rockchip_resume)
649 };
650 
651 struct platform_driver dw_hdmi_rockchip_pltfm_driver = {
652 	.probe  = dw_hdmi_rockchip_probe,
653 	.remove = dw_hdmi_rockchip_remove,
654 	.driver = {
655 		.name = "dwhdmi-rockchip",
656 		.pm = &dw_hdmi_rockchip_pm,
657 		.of_match_table = dw_hdmi_rockchip_dt_ids,
658 	},
659 };
660