1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
4 */
5
6 #include <linux/clk.h>
7 #include <linux/mfd/syscon.h>
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 #include <linux/phy/phy.h>
11 #include <linux/regmap.h>
12 #include <linux/regulator/consumer.h>
13
14 #include <drm/bridge/dw_hdmi.h>
15 #include <drm/drm_edid.h>
16 #include <drm/drm_of.h>
17 #include <drm/drm_probe_helper.h>
18 #include <drm/drm_simple_kms_helper.h>
19
20 #include "rockchip_drm_drv.h"
21 #include "rockchip_drm_vop.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 #define HIWORD_UPDATE(val, mask) (val | (mask) << 16)
59
60 /**
61 * struct rockchip_hdmi_chip_data - splite the grf setting of kind of chips
62 * @lcdsel_grf_reg: grf register offset of lcdc select
63 * @lcdsel_big: reg value of selecting vop big for HDMI
64 * @lcdsel_lit: reg value of selecting vop little for HDMI
65 */
66 struct rockchip_hdmi_chip_data {
67 int lcdsel_grf_reg;
68 u32 lcdsel_big;
69 u32 lcdsel_lit;
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 struct clk *ref_clk;
78 struct clk *grf_clk;
79 struct dw_hdmi *hdmi;
80 struct regulator *avdd_0v9;
81 struct regulator *avdd_1v8;
82 struct phy *phy;
83 };
84
to_rockchip_hdmi(struct drm_encoder * encoder)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 27000000, {
95 { 0x00b3, 0x0000},
96 { 0x2153, 0x0000},
97 { 0x40f3, 0x0000}
98 },
99 }, {
100 36000000, {
101 { 0x00b3, 0x0000},
102 { 0x2153, 0x0000},
103 { 0x40f3, 0x0000}
104 },
105 }, {
106 40000000, {
107 { 0x00b3, 0x0000},
108 { 0x2153, 0x0000},
109 { 0x40f3, 0x0000}
110 },
111 }, {
112 54000000, {
113 { 0x0072, 0x0001},
114 { 0x2142, 0x0001},
115 { 0x40a2, 0x0001},
116 },
117 }, {
118 65000000, {
119 { 0x0072, 0x0001},
120 { 0x2142, 0x0001},
121 { 0x40a2, 0x0001},
122 },
123 }, {
124 66000000, {
125 { 0x013e, 0x0003},
126 { 0x217e, 0x0002},
127 { 0x4061, 0x0002}
128 },
129 }, {
130 74250000, {
131 { 0x0072, 0x0001},
132 { 0x2145, 0x0002},
133 { 0x4061, 0x0002}
134 },
135 }, {
136 83500000, {
137 { 0x0072, 0x0001},
138 },
139 }, {
140 108000000, {
141 { 0x0051, 0x0002},
142 { 0x2145, 0x0002},
143 { 0x4061, 0x0002}
144 },
145 }, {
146 106500000, {
147 { 0x0051, 0x0002},
148 { 0x2145, 0x0002},
149 { 0x4061, 0x0002}
150 },
151 }, {
152 146250000, {
153 { 0x0051, 0x0002},
154 { 0x2145, 0x0002},
155 { 0x4061, 0x0002}
156 },
157 }, {
158 148500000, {
159 { 0x0051, 0x0003},
160 { 0x214c, 0x0003},
161 { 0x4064, 0x0003}
162 },
163 }, {
164 ~0UL, {
165 { 0x00a0, 0x000a },
166 { 0x2001, 0x000f },
167 { 0x4002, 0x000f },
168 },
169 }
170 };
171
172 static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = {
173 /* pixelclk bpp8 bpp10 bpp12 */
174 {
175 40000000, { 0x0018, 0x0018, 0x0018 },
176 }, {
177 65000000, { 0x0028, 0x0028, 0x0028 },
178 }, {
179 66000000, { 0x0038, 0x0038, 0x0038 },
180 }, {
181 74250000, { 0x0028, 0x0038, 0x0038 },
182 }, {
183 83500000, { 0x0028, 0x0038, 0x0038 },
184 }, {
185 146250000, { 0x0038, 0x0038, 0x0038 },
186 }, {
187 148500000, { 0x0000, 0x0038, 0x0038 },
188 }, {
189 ~0UL, { 0x0000, 0x0000, 0x0000},
190 }
191 };
192
193 static const struct dw_hdmi_phy_config rockchip_phy_config[] = {
194 /*pixelclk symbol term vlev*/
195 { 74250000, 0x8009, 0x0004, 0x0272},
196 { 148500000, 0x802b, 0x0004, 0x028d},
197 { 297000000, 0x8039, 0x0005, 0x028d},
198 { ~0UL, 0x0000, 0x0000, 0x0000}
199 };
200
rockchip_hdmi_parse_dt(struct rockchip_hdmi * hdmi)201 static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
202 {
203 struct device_node *np = hdmi->dev->of_node;
204
205 hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
206 if (IS_ERR(hdmi->regmap)) {
207 DRM_DEV_ERROR(hdmi->dev, "Unable to get rockchip,grf\n");
208 return PTR_ERR(hdmi->regmap);
209 }
210
211 hdmi->ref_clk = devm_clk_get_optional(hdmi->dev, "ref");
212 if (!hdmi->ref_clk)
213 hdmi->ref_clk = devm_clk_get_optional(hdmi->dev, "vpll");
214
215 if (PTR_ERR(hdmi->ref_clk) == -EPROBE_DEFER) {
216 return -EPROBE_DEFER;
217 } else if (IS_ERR(hdmi->ref_clk)) {
218 DRM_DEV_ERROR(hdmi->dev, "failed to get reference clock\n");
219 return PTR_ERR(hdmi->ref_clk);
220 }
221
222 hdmi->grf_clk = devm_clk_get(hdmi->dev, "grf");
223 if (PTR_ERR(hdmi->grf_clk) == -ENOENT) {
224 hdmi->grf_clk = NULL;
225 } else if (PTR_ERR(hdmi->grf_clk) == -EPROBE_DEFER) {
226 return -EPROBE_DEFER;
227 } else if (IS_ERR(hdmi->grf_clk)) {
228 DRM_DEV_ERROR(hdmi->dev, "failed to get grf clock\n");
229 return PTR_ERR(hdmi->grf_clk);
230 }
231
232 hdmi->avdd_0v9 = devm_regulator_get(hdmi->dev, "avdd-0v9");
233 if (IS_ERR(hdmi->avdd_0v9))
234 return PTR_ERR(hdmi->avdd_0v9);
235
236 hdmi->avdd_1v8 = devm_regulator_get(hdmi->dev, "avdd-1v8");
237 if (IS_ERR(hdmi->avdd_1v8))
238 return PTR_ERR(hdmi->avdd_1v8);
239
240 return 0;
241 }
242
243 static enum drm_mode_status
dw_hdmi_rockchip_mode_valid(struct dw_hdmi * hdmi,void * data,const struct drm_display_info * info,const struct drm_display_mode * mode)244 dw_hdmi_rockchip_mode_valid(struct dw_hdmi *hdmi, void *data,
245 const struct drm_display_info *info,
246 const struct drm_display_mode *mode)
247 {
248 const struct dw_hdmi_mpll_config *mpll_cfg = rockchip_mpll_cfg;
249 int pclk = mode->clock * 1000;
250 bool valid = false;
251 int i;
252
253 for (i = 0; mpll_cfg[i].mpixelclock != (~0UL); i++) {
254 if (pclk == mpll_cfg[i].mpixelclock) {
255 valid = true;
256 break;
257 }
258 }
259
260 return (valid) ? MODE_OK : MODE_BAD;
261 }
262
dw_hdmi_rockchip_encoder_disable(struct drm_encoder * encoder)263 static void dw_hdmi_rockchip_encoder_disable(struct drm_encoder *encoder)
264 {
265 }
266
267 static bool
dw_hdmi_rockchip_encoder_mode_fixup(struct drm_encoder * encoder,const struct drm_display_mode * mode,struct drm_display_mode * adj_mode)268 dw_hdmi_rockchip_encoder_mode_fixup(struct drm_encoder *encoder,
269 const struct drm_display_mode *mode,
270 struct drm_display_mode *adj_mode)
271 {
272 return true;
273 }
274
dw_hdmi_rockchip_encoder_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adj_mode)275 static void dw_hdmi_rockchip_encoder_mode_set(struct drm_encoder *encoder,
276 struct drm_display_mode *mode,
277 struct drm_display_mode *adj_mode)
278 {
279 struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
280
281 clk_set_rate(hdmi->ref_clk, adj_mode->clock * 1000);
282 }
283
dw_hdmi_rockchip_encoder_enable(struct drm_encoder * encoder)284 static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder)
285 {
286 struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
287 u32 val;
288 int ret;
289
290 if (hdmi->chip_data->lcdsel_grf_reg < 0)
291 return;
292
293 ret = drm_of_encoder_active_endpoint_id(hdmi->dev->of_node, encoder);
294 if (ret)
295 val = hdmi->chip_data->lcdsel_lit;
296 else
297 val = hdmi->chip_data->lcdsel_big;
298
299 ret = clk_prepare_enable(hdmi->grf_clk);
300 if (ret < 0) {
301 DRM_DEV_ERROR(hdmi->dev, "failed to enable grfclk %d\n", ret);
302 return;
303 }
304
305 ret = regmap_write(hdmi->regmap, hdmi->chip_data->lcdsel_grf_reg, val);
306 if (ret != 0)
307 DRM_DEV_ERROR(hdmi->dev, "Could not write to GRF: %d\n", ret);
308
309 clk_disable_unprepare(hdmi->grf_clk);
310 DRM_DEV_DEBUG(hdmi->dev, "vop %s output to hdmi\n",
311 ret ? "LIT" : "BIG");
312 }
313
314 static int
dw_hdmi_rockchip_encoder_atomic_check(struct drm_encoder * encoder,struct drm_crtc_state * crtc_state,struct drm_connector_state * conn_state)315 dw_hdmi_rockchip_encoder_atomic_check(struct drm_encoder *encoder,
316 struct drm_crtc_state *crtc_state,
317 struct drm_connector_state *conn_state)
318 {
319 struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
320
321 s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
322 s->output_type = DRM_MODE_CONNECTOR_HDMIA;
323
324 return 0;
325 }
326
327 static const struct drm_encoder_helper_funcs dw_hdmi_rockchip_encoder_helper_funcs = {
328 .mode_fixup = dw_hdmi_rockchip_encoder_mode_fixup,
329 .mode_set = dw_hdmi_rockchip_encoder_mode_set,
330 .enable = dw_hdmi_rockchip_encoder_enable,
331 .disable = dw_hdmi_rockchip_encoder_disable,
332 .atomic_check = dw_hdmi_rockchip_encoder_atomic_check,
333 };
334
dw_hdmi_rockchip_genphy_init(struct dw_hdmi * dw_hdmi,void * data,const struct drm_display_info * display,const struct drm_display_mode * mode)335 static int dw_hdmi_rockchip_genphy_init(struct dw_hdmi *dw_hdmi, void *data,
336 const struct drm_display_info *display,
337 const struct drm_display_mode *mode)
338 {
339 struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
340
341 return phy_power_on(hdmi->phy);
342 }
343
dw_hdmi_rockchip_genphy_disable(struct dw_hdmi * dw_hdmi,void * data)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
dw_hdmi_rk3228_setup_hpd(struct dw_hdmi * dw_hdmi,void * data)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,
358 RK3228_GRF_SOC_CON6,
359 HIWORD_UPDATE(RK3228_HDMI_HPD_VSEL | RK3228_HDMI_SDA_VSEL |
360 RK3228_HDMI_SCL_VSEL,
361 RK3228_HDMI_HPD_VSEL | RK3228_HDMI_SDA_VSEL |
362 RK3228_HDMI_SCL_VSEL));
363
364 regmap_write(hdmi->regmap,
365 RK3228_GRF_SOC_CON2,
366 HIWORD_UPDATE(RK3228_HDMI_SDAIN_MSK | RK3228_HDMI_SCLIN_MSK,
367 RK3228_HDMI_SDAIN_MSK | RK3228_HDMI_SCLIN_MSK));
368 }
369
370 static enum drm_connector_status
dw_hdmi_rk3328_read_hpd(struct dw_hdmi * dw_hdmi,void * data)371 dw_hdmi_rk3328_read_hpd(struct dw_hdmi *dw_hdmi, void *data)
372 {
373 struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
374 enum drm_connector_status status;
375
376 status = dw_hdmi_phy_read_hpd(dw_hdmi, data);
377
378 if (status == connector_status_connected)
379 regmap_write(hdmi->regmap,
380 RK3328_GRF_SOC_CON4,
381 HIWORD_UPDATE(RK3328_HDMI_SDA_5V | RK3328_HDMI_SCL_5V,
382 RK3328_HDMI_SDA_5V | RK3328_HDMI_SCL_5V));
383 else
384 regmap_write(hdmi->regmap,
385 RK3328_GRF_SOC_CON4,
386 HIWORD_UPDATE(0, RK3328_HDMI_SDA_5V |
387 RK3328_HDMI_SCL_5V));
388 return status;
389 }
390
dw_hdmi_rk3328_setup_hpd(struct dw_hdmi * dw_hdmi,void * data)391 static void dw_hdmi_rk3328_setup_hpd(struct dw_hdmi *dw_hdmi, void *data)
392 {
393 struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
394
395 dw_hdmi_phy_setup_hpd(dw_hdmi, data);
396
397 /* Enable and map pins to 3V grf-controlled io-voltage */
398 regmap_write(hdmi->regmap,
399 RK3328_GRF_SOC_CON4,
400 HIWORD_UPDATE(0, RK3328_HDMI_HPD_SARADC | RK3328_HDMI_CEC_5V |
401 RK3328_HDMI_SDA_5V | RK3328_HDMI_SCL_5V |
402 RK3328_HDMI_HPD_5V));
403 regmap_write(hdmi->regmap,
404 RK3328_GRF_SOC_CON3,
405 HIWORD_UPDATE(0, RK3328_HDMI_SDA5V_GRF | RK3328_HDMI_SCL5V_GRF |
406 RK3328_HDMI_HPD5V_GRF |
407 RK3328_HDMI_CEC5V_GRF));
408 regmap_write(hdmi->regmap,
409 RK3328_GRF_SOC_CON2,
410 HIWORD_UPDATE(RK3328_HDMI_SDAIN_MSK | RK3328_HDMI_SCLIN_MSK,
411 RK3328_HDMI_SDAIN_MSK | RK3328_HDMI_SCLIN_MSK |
412 RK3328_HDMI_HPD_IOE));
413 }
414
415 static const struct dw_hdmi_phy_ops rk3228_hdmi_phy_ops = {
416 .init = dw_hdmi_rockchip_genphy_init,
417 .disable = dw_hdmi_rockchip_genphy_disable,
418 .read_hpd = dw_hdmi_phy_read_hpd,
419 .update_hpd = dw_hdmi_phy_update_hpd,
420 .setup_hpd = dw_hdmi_rk3228_setup_hpd,
421 };
422
423 static struct rockchip_hdmi_chip_data rk3228_chip_data = {
424 .lcdsel_grf_reg = -1,
425 };
426
427 static const struct dw_hdmi_plat_data rk3228_hdmi_drv_data = {
428 .mode_valid = dw_hdmi_rockchip_mode_valid,
429 .mpll_cfg = rockchip_mpll_cfg,
430 .cur_ctr = rockchip_cur_ctr,
431 .phy_config = rockchip_phy_config,
432 .phy_data = &rk3228_chip_data,
433 .phy_ops = &rk3228_hdmi_phy_ops,
434 .phy_name = "inno_dw_hdmi_phy2",
435 .phy_force_vendor = true,
436 };
437
438 static struct rockchip_hdmi_chip_data rk3288_chip_data = {
439 .lcdsel_grf_reg = RK3288_GRF_SOC_CON6,
440 .lcdsel_big = HIWORD_UPDATE(0, RK3288_HDMI_LCDC_SEL),
441 .lcdsel_lit = HIWORD_UPDATE(RK3288_HDMI_LCDC_SEL, RK3288_HDMI_LCDC_SEL),
442 };
443
444 static const struct dw_hdmi_plat_data rk3288_hdmi_drv_data = {
445 .mode_valid = dw_hdmi_rockchip_mode_valid,
446 .mpll_cfg = rockchip_mpll_cfg,
447 .cur_ctr = rockchip_cur_ctr,
448 .phy_config = rockchip_phy_config,
449 .phy_data = &rk3288_chip_data,
450 };
451
452 static const struct dw_hdmi_phy_ops rk3328_hdmi_phy_ops = {
453 .init = dw_hdmi_rockchip_genphy_init,
454 .disable = dw_hdmi_rockchip_genphy_disable,
455 .read_hpd = dw_hdmi_rk3328_read_hpd,
456 .update_hpd = dw_hdmi_phy_update_hpd,
457 .setup_hpd = dw_hdmi_rk3328_setup_hpd,
458 };
459
460 static struct rockchip_hdmi_chip_data rk3328_chip_data = {
461 .lcdsel_grf_reg = -1,
462 };
463
464 static const struct dw_hdmi_plat_data rk3328_hdmi_drv_data = {
465 .mode_valid = dw_hdmi_rockchip_mode_valid,
466 .mpll_cfg = rockchip_mpll_cfg,
467 .cur_ctr = rockchip_cur_ctr,
468 .phy_config = rockchip_phy_config,
469 .phy_data = &rk3328_chip_data,
470 .phy_ops = &rk3328_hdmi_phy_ops,
471 .phy_name = "inno_dw_hdmi_phy2",
472 .phy_force_vendor = true,
473 .use_drm_infoframe = true,
474 };
475
476 static struct rockchip_hdmi_chip_data rk3399_chip_data = {
477 .lcdsel_grf_reg = RK3399_GRF_SOC_CON20,
478 .lcdsel_big = HIWORD_UPDATE(0, RK3399_HDMI_LCDC_SEL),
479 .lcdsel_lit = HIWORD_UPDATE(RK3399_HDMI_LCDC_SEL, RK3399_HDMI_LCDC_SEL),
480 };
481
482 static const struct dw_hdmi_plat_data rk3399_hdmi_drv_data = {
483 .mode_valid = dw_hdmi_rockchip_mode_valid,
484 .mpll_cfg = rockchip_mpll_cfg,
485 .cur_ctr = rockchip_cur_ctr,
486 .phy_config = rockchip_phy_config,
487 .phy_data = &rk3399_chip_data,
488 .use_drm_infoframe = true,
489 };
490
491 static struct rockchip_hdmi_chip_data rk3568_chip_data = {
492 .lcdsel_grf_reg = -1,
493 };
494
495 static const struct dw_hdmi_plat_data rk3568_hdmi_drv_data = {
496 .mode_valid = dw_hdmi_rockchip_mode_valid,
497 .mpll_cfg = rockchip_mpll_cfg,
498 .cur_ctr = rockchip_cur_ctr,
499 .phy_config = rockchip_phy_config,
500 .phy_data = &rk3568_chip_data,
501 .use_drm_infoframe = true,
502 };
503
504 static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = {
505 { .compatible = "rockchip,rk3228-dw-hdmi",
506 .data = &rk3228_hdmi_drv_data
507 },
508 { .compatible = "rockchip,rk3288-dw-hdmi",
509 .data = &rk3288_hdmi_drv_data
510 },
511 { .compatible = "rockchip,rk3328-dw-hdmi",
512 .data = &rk3328_hdmi_drv_data
513 },
514 { .compatible = "rockchip,rk3399-dw-hdmi",
515 .data = &rk3399_hdmi_drv_data
516 },
517 { .compatible = "rockchip,rk3568-dw-hdmi",
518 .data = &rk3568_hdmi_drv_data
519 },
520 {},
521 };
522 MODULE_DEVICE_TABLE(of, dw_hdmi_rockchip_dt_ids);
523
dw_hdmi_rockchip_bind(struct device * dev,struct device * master,void * data)524 static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
525 void *data)
526 {
527 struct platform_device *pdev = to_platform_device(dev);
528 struct dw_hdmi_plat_data *plat_data;
529 const struct of_device_id *match;
530 struct drm_device *drm = data;
531 struct drm_encoder *encoder;
532 struct rockchip_hdmi *hdmi;
533 int ret;
534
535 if (!pdev->dev.of_node)
536 return -ENODEV;
537
538 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
539 if (!hdmi)
540 return -ENOMEM;
541
542 match = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node);
543 plat_data = devm_kmemdup(&pdev->dev, match->data,
544 sizeof(*plat_data), GFP_KERNEL);
545 if (!plat_data)
546 return -ENOMEM;
547
548 hdmi->dev = &pdev->dev;
549 hdmi->chip_data = plat_data->phy_data;
550 plat_data->phy_data = hdmi;
551 encoder = &hdmi->encoder.encoder;
552
553 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
554 rockchip_drm_encoder_set_crtc_endpoint_id(&hdmi->encoder,
555 dev->of_node, 0, 0);
556
557 /*
558 * If we failed to find the CRTC(s) which this encoder is
559 * supposed to be connected to, it's because the CRTC has
560 * not been registered yet. Defer probing, and hope that
561 * the required CRTC is added later.
562 */
563 if (encoder->possible_crtcs == 0)
564 return -EPROBE_DEFER;
565
566 ret = rockchip_hdmi_parse_dt(hdmi);
567 if (ret) {
568 if (ret != -EPROBE_DEFER)
569 DRM_DEV_ERROR(hdmi->dev, "Unable to parse OF data\n");
570 return ret;
571 }
572
573 hdmi->phy = devm_phy_optional_get(dev, "hdmi");
574 if (IS_ERR(hdmi->phy)) {
575 ret = PTR_ERR(hdmi->phy);
576 if (ret != -EPROBE_DEFER)
577 DRM_DEV_ERROR(hdmi->dev, "failed to get phy\n");
578 return ret;
579 }
580
581 ret = regulator_enable(hdmi->avdd_0v9);
582 if (ret) {
583 DRM_DEV_ERROR(hdmi->dev, "failed to enable avdd0v9: %d\n", ret);
584 goto err_avdd_0v9;
585 }
586
587 ret = regulator_enable(hdmi->avdd_1v8);
588 if (ret) {
589 DRM_DEV_ERROR(hdmi->dev, "failed to enable avdd1v8: %d\n", ret);
590 goto err_avdd_1v8;
591 }
592
593 ret = clk_prepare_enable(hdmi->ref_clk);
594 if (ret) {
595 DRM_DEV_ERROR(hdmi->dev, "Failed to enable HDMI reference clock: %d\n",
596 ret);
597 goto err_clk;
598 }
599
600 if (hdmi->chip_data == &rk3568_chip_data) {
601 regmap_write(hdmi->regmap, RK3568_GRF_VO_CON1,
602 HIWORD_UPDATE(RK3568_HDMI_SDAIN_MSK |
603 RK3568_HDMI_SCLIN_MSK,
604 RK3568_HDMI_SDAIN_MSK |
605 RK3568_HDMI_SCLIN_MSK));
606 }
607
608 drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs);
609 drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);
610
611 platform_set_drvdata(pdev, hdmi);
612
613 hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
614
615 /*
616 * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
617 * which would have called the encoder cleanup. Do it manually.
618 */
619 if (IS_ERR(hdmi->hdmi)) {
620 ret = PTR_ERR(hdmi->hdmi);
621 goto err_bind;
622 }
623
624 return 0;
625
626 err_bind:
627 drm_encoder_cleanup(encoder);
628 clk_disable_unprepare(hdmi->ref_clk);
629 err_clk:
630 regulator_disable(hdmi->avdd_1v8);
631 err_avdd_1v8:
632 regulator_disable(hdmi->avdd_0v9);
633 err_avdd_0v9:
634 return ret;
635 }
636
dw_hdmi_rockchip_unbind(struct device * dev,struct device * master,void * data)637 static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
638 void *data)
639 {
640 struct rockchip_hdmi *hdmi = dev_get_drvdata(dev);
641
642 dw_hdmi_unbind(hdmi->hdmi);
643 drm_encoder_cleanup(&hdmi->encoder.encoder);
644 clk_disable_unprepare(hdmi->ref_clk);
645
646 regulator_disable(hdmi->avdd_1v8);
647 regulator_disable(hdmi->avdd_0v9);
648 }
649
650 static const struct component_ops dw_hdmi_rockchip_ops = {
651 .bind = dw_hdmi_rockchip_bind,
652 .unbind = dw_hdmi_rockchip_unbind,
653 };
654
dw_hdmi_rockchip_probe(struct platform_device * pdev)655 static int dw_hdmi_rockchip_probe(struct platform_device *pdev)
656 {
657 return component_add(&pdev->dev, &dw_hdmi_rockchip_ops);
658 }
659
dw_hdmi_rockchip_remove(struct platform_device * pdev)660 static int dw_hdmi_rockchip_remove(struct platform_device *pdev)
661 {
662 component_del(&pdev->dev, &dw_hdmi_rockchip_ops);
663
664 return 0;
665 }
666
dw_hdmi_rockchip_resume(struct device * dev)667 static int __maybe_unused dw_hdmi_rockchip_resume(struct device *dev)
668 {
669 struct rockchip_hdmi *hdmi = dev_get_drvdata(dev);
670
671 dw_hdmi_resume(hdmi->hdmi);
672
673 return 0;
674 }
675
676 static const struct dev_pm_ops dw_hdmi_rockchip_pm = {
677 SET_SYSTEM_SLEEP_PM_OPS(NULL, dw_hdmi_rockchip_resume)
678 };
679
680 struct platform_driver dw_hdmi_rockchip_pltfm_driver = {
681 .probe = dw_hdmi_rockchip_probe,
682 .remove = dw_hdmi_rockchip_remove,
683 .driver = {
684 .name = "dwhdmi-rockchip",
685 .pm = &dw_hdmi_rockchip_pm,
686 .of_match_table = dw_hdmi_rockchip_dt_ids,
687 },
688 };
689