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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
13#include <drm/bridge/dw_hdmi.h>
14#include <drm/drm_edid.h>
15#include <drm/drm_of.h>
16#include <drm/drm_probe_helper.h>
17
18#include "rockchip_drm_drv.h"
19#include "rockchip_drm_vop.h"
20
21#define RK3228_GRF_SOC_CON2 0x0408
22#define RK3228_HDMI_SDAIN_MSK BIT(14)
23#define RK3228_HDMI_SCLIN_MSK BIT(13)
24#define RK3228_GRF_SOC_CON6 0x0418
25#define RK3228_HDMI_HPD_VSEL BIT(6)
26#define RK3228_HDMI_SDA_VSEL BIT(5)
27#define RK3228_HDMI_SCL_VSEL BIT(4)
28
29#define RK3288_GRF_SOC_CON6 0x025C
30#define RK3288_HDMI_LCDC_SEL BIT(4)
31#define RK3328_GRF_SOC_CON2 0x0408
32
33#define RK3328_HDMI_SDAIN_MSK BIT(11)
34#define RK3328_HDMI_SCLIN_MSK BIT(10)
35#define RK3328_HDMI_HPD_IOE BIT(2)
36#define RK3328_GRF_SOC_CON3 0x040c
37/* need to be unset if hdmi or i2c should control voltage */
38#define RK3328_HDMI_SDA5V_GRF BIT(15)
39#define RK3328_HDMI_SCL5V_GRF BIT(14)
40#define RK3328_HDMI_HPD5V_GRF BIT(13)
41#define RK3328_HDMI_CEC5V_GRF BIT(12)
42#define RK3328_GRF_SOC_CON4 0x0410
43#define RK3328_HDMI_HPD_SARADC BIT(13)
44#define RK3328_HDMI_CEC_5V BIT(11)
45#define RK3328_HDMI_SDA_5V BIT(10)
46#define RK3328_HDMI_SCL_5V BIT(9)
47#define RK3328_HDMI_HPD_5V BIT(8)
48
49#define RK3399_GRF_SOC_CON20 0x6250
50#define RK3399_HDMI_LCDC_SEL BIT(6)
51
52#define HIWORD_UPDATE(val, mask) (val | (mask) << 16)
53
54/**
55 * struct rockchip_hdmi_chip_data - splite the grf setting of kind of chips
56 * @lcdsel_grf_reg: grf register offset of lcdc select
57 * @lcdsel_big: reg value of selecting vop big for HDMI
58 * @lcdsel_lit: reg value of selecting vop little for HDMI
59 */
60struct rockchip_hdmi_chip_data {
61 int lcdsel_grf_reg;
62 u32 lcdsel_big;
63 u32 lcdsel_lit;
64};
65
66struct rockchip_hdmi {
67 struct device *dev;
68 struct regmap *regmap;
69 struct drm_encoder encoder;
70 const struct rockchip_hdmi_chip_data *chip_data;
71 struct clk *vpll_clk;
72 struct clk *grf_clk;
73 struct dw_hdmi *hdmi;
74 struct phy *phy;
75};
76
77#define to_rockchip_hdmi(x) container_of(x, struct rockchip_hdmi, x)
78
79static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = {
80 {
81 27000000, {
82 { 0x00b3, 0x0000},
83 { 0x2153, 0x0000},
84 { 0x40f3, 0x0000}
85 },
86 }, {
87 36000000, {
88 { 0x00b3, 0x0000},
89 { 0x2153, 0x0000},
90 { 0x40f3, 0x0000}
91 },
92 }, {
93 40000000, {
94 { 0x00b3, 0x0000},
95 { 0x2153, 0x0000},
96 { 0x40f3, 0x0000}
97 },
98 }, {
99 54000000, {
100 { 0x0072, 0x0001},
101 { 0x2142, 0x0001},
102 { 0x40a2, 0x0001},
103 },
104 }, {
105 65000000, {
106 { 0x0072, 0x0001},
107 { 0x2142, 0x0001},
108 { 0x40a2, 0x0001},
109 },
110 }, {
111 66000000, {
112 { 0x013e, 0x0003},
113 { 0x217e, 0x0002},
114 { 0x4061, 0x0002}
115 },
116 }, {
117 74250000, {
118 { 0x0072, 0x0001},
119 { 0x2145, 0x0002},
120 { 0x4061, 0x0002}
121 },
122 }, {
123 83500000, {
124 { 0x0072, 0x0001},
125 },
126 }, {
127 108000000, {
128 { 0x0051, 0x0002},
129 { 0x2145, 0x0002},
130 { 0x4061, 0x0002}
131 },
132 }, {
133 106500000, {
134 { 0x0051, 0x0002},
135 { 0x2145, 0x0002},
136 { 0x4061, 0x0002}
137 },
138 }, {
139 146250000, {
140 { 0x0051, 0x0002},
141 { 0x2145, 0x0002},
142 { 0x4061, 0x0002}
143 },
144 }, {
145 148500000, {
146 { 0x0051, 0x0003},
147 { 0x214c, 0x0003},
148 { 0x4064, 0x0003}
149 },
150 }, {
151 ~0UL, {
152 { 0x00a0, 0x000a },
153 { 0x2001, 0x000f },
154 { 0x4002, 0x000f },
155 },
156 }
157};
158
159static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = {
160 /* pixelclk bpp8 bpp10 bpp12 */
161 {
162 40000000, { 0x0018, 0x0018, 0x0018 },
163 }, {
164 65000000, { 0x0028, 0x0028, 0x0028 },
165 }, {
166 66000000, { 0x0038, 0x0038, 0x0038 },
167 }, {
168 74250000, { 0x0028, 0x0038, 0x0038 },
169 }, {
170 83500000, { 0x0028, 0x0038, 0x0038 },
171 }, {
172 146250000, { 0x0038, 0x0038, 0x0038 },
173 }, {
174 148500000, { 0x0000, 0x0038, 0x0038 },
175 }, {
176 ~0UL, { 0x0000, 0x0000, 0x0000},
177 }
178};
179
180static const struct dw_hdmi_phy_config rockchip_phy_config[] = {
181 /*pixelclk symbol term vlev*/
182 { 74250000, 0x8009, 0x0004, 0x0272},
183 { 148500000, 0x802b, 0x0004, 0x028d},
184 { 297000000, 0x8039, 0x0005, 0x028d},
185 { ~0UL, 0x0000, 0x0000, 0x0000}
186};
187
188static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
189{
190 struct device_node *np = hdmi->dev->of_node;
191
192 hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
193 if (IS_ERR(hdmi->regmap)) {
194 DRM_DEV_ERROR(hdmi->dev, "Unable to get rockchip,grf\n");
195 return PTR_ERR(hdmi->regmap);
196 }
197
198 hdmi->vpll_clk = devm_clk_get(hdmi->dev, "vpll");
199 if (PTR_ERR(hdmi->vpll_clk) == -ENOENT) {
200 hdmi->vpll_clk = NULL;
201 } else if (PTR_ERR(hdmi->vpll_clk) == -EPROBE_DEFER) {
202 return -EPROBE_DEFER;
203 } else if (IS_ERR(hdmi->vpll_clk)) {
204 DRM_DEV_ERROR(hdmi->dev, "failed to get grf clock\n");
205 return PTR_ERR(hdmi->vpll_clk);
206 }
207
208 hdmi->grf_clk = devm_clk_get(hdmi->dev, "grf");
209 if (PTR_ERR(hdmi->grf_clk) == -ENOENT) {
210 hdmi->grf_clk = NULL;
211 } else if (PTR_ERR(hdmi->grf_clk) == -EPROBE_DEFER) {
212 return -EPROBE_DEFER;
213 } else if (IS_ERR(hdmi->grf_clk)) {
214 DRM_DEV_ERROR(hdmi->dev, "failed to get grf clock\n");
215 return PTR_ERR(hdmi->grf_clk);
216 }
217
218 return 0;
219}
220
221static enum drm_mode_status
222dw_hdmi_rockchip_mode_valid(struct drm_connector *connector,
223 const struct drm_display_mode *mode)
224{
225 const struct dw_hdmi_mpll_config *mpll_cfg = rockchip_mpll_cfg;
226 int pclk = mode->clock * 1000;
227 bool valid = false;
228 int i;
229
230 for (i = 0; mpll_cfg[i].mpixelclock != (~0UL); i++) {
231 if (pclk == mpll_cfg[i].mpixelclock) {
232 valid = true;
233 break;
234 }
235 }
236
237 return (valid) ? MODE_OK : MODE_BAD;
238}
239
240static const struct drm_encoder_funcs dw_hdmi_rockchip_encoder_funcs = {
241 .destroy = drm_encoder_cleanup,
242};
243
244static void dw_hdmi_rockchip_encoder_disable(struct drm_encoder *encoder)
245{
246}
247
248static bool
249dw_hdmi_rockchip_encoder_mode_fixup(struct drm_encoder *encoder,
250 const struct drm_display_mode *mode,
251 struct drm_display_mode *adj_mode)
252{
253 return true;
254}
255
256static void dw_hdmi_rockchip_encoder_mode_set(struct drm_encoder *encoder,
257 struct drm_display_mode *mode,
258 struct drm_display_mode *adj_mode)
259{
260 struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
261
262 clk_set_rate(hdmi->vpll_clk, adj_mode->clock * 1000);
263}
264
265static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder)
266{
267 struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
268 u32 val;
269 int ret;
270
271 if (hdmi->chip_data->lcdsel_grf_reg < 0)
272 return;
273
274 ret = drm_of_encoder_active_endpoint_id(hdmi->dev->of_node, encoder);
275 if (ret)
276 val = hdmi->chip_data->lcdsel_lit;
277 else
278 val = hdmi->chip_data->lcdsel_big;
279
280 ret = clk_prepare_enable(hdmi->grf_clk);
281 if (ret < 0) {
282 DRM_DEV_ERROR(hdmi->dev, "failed to enable grfclk %d\n", ret);
283 return;
284 }
285
286 ret = regmap_write(hdmi->regmap, hdmi->chip_data->lcdsel_grf_reg, val);
287 if (ret != 0)
288 DRM_DEV_ERROR(hdmi->dev, "Could not write to GRF: %d\n", ret);
289
290 clk_disable_unprepare(hdmi->grf_clk);
291 DRM_DEV_DEBUG(hdmi->dev, "vop %s output to hdmi\n",
292 ret ? "LIT" : "BIG");
293}
294
295static int
296dw_hdmi_rockchip_encoder_atomic_check(struct drm_encoder *encoder,
297 struct drm_crtc_state *crtc_state,
298 struct drm_connector_state *conn_state)
299{
300 struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
301
302 s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
303 s->output_type = DRM_MODE_CONNECTOR_HDMIA;
304
305 return 0;
306}
307
308static const struct drm_encoder_helper_funcs dw_hdmi_rockchip_encoder_helper_funcs = {
309 .mode_fixup = dw_hdmi_rockchip_encoder_mode_fixup,
310 .mode_set = dw_hdmi_rockchip_encoder_mode_set,
311 .enable = dw_hdmi_rockchip_encoder_enable,
312 .disable = dw_hdmi_rockchip_encoder_disable,
313 .atomic_check = dw_hdmi_rockchip_encoder_atomic_check,
314};
315
316static int dw_hdmi_rockchip_genphy_init(struct dw_hdmi *dw_hdmi, void *data,
317 struct drm_display_mode *mode)
318{
319 struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
320
321 return phy_power_on(hdmi->phy);
322}
323
324static void dw_hdmi_rockchip_genphy_disable(struct dw_hdmi *dw_hdmi, void *data)
325{
326 struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
327
328 phy_power_off(hdmi->phy);
329}
330
331static void dw_hdmi_rk3228_setup_hpd(struct dw_hdmi *dw_hdmi, void *data)
332{
333 struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
334
335 dw_hdmi_phy_setup_hpd(dw_hdmi, data);
336
337 regmap_write(hdmi->regmap,
338 RK3228_GRF_SOC_CON6,
339 HIWORD_UPDATE(RK3228_HDMI_HPD_VSEL | RK3228_HDMI_SDA_VSEL |
340 RK3228_HDMI_SCL_VSEL,
341 RK3228_HDMI_HPD_VSEL | RK3228_HDMI_SDA_VSEL |
342 RK3228_HDMI_SCL_VSEL));
343
344 regmap_write(hdmi->regmap,
345 RK3228_GRF_SOC_CON2,
346 HIWORD_UPDATE(RK3228_HDMI_SDAIN_MSK | RK3228_HDMI_SCLIN_MSK,
347 RK3228_HDMI_SDAIN_MSK | RK3228_HDMI_SCLIN_MSK));
348}
349
350static enum drm_connector_status
351dw_hdmi_rk3328_read_hpd(struct dw_hdmi *dw_hdmi, void *data)
352{
353 struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
354 enum drm_connector_status status;
355
356 status = dw_hdmi_phy_read_hpd(dw_hdmi, data);
357
358 if (status == connector_status_connected)
359 regmap_write(hdmi->regmap,
360 RK3328_GRF_SOC_CON4,
361 HIWORD_UPDATE(RK3328_HDMI_SDA_5V | RK3328_HDMI_SCL_5V,
362 RK3328_HDMI_SDA_5V | RK3328_HDMI_SCL_5V));
363 else
364 regmap_write(hdmi->regmap,
365 RK3328_GRF_SOC_CON4,
366 HIWORD_UPDATE(0, RK3328_HDMI_SDA_5V |
367 RK3328_HDMI_SCL_5V));
368 return status;
369}
370
371static void dw_hdmi_rk3328_setup_hpd(struct dw_hdmi *dw_hdmi, void *data)
372{
373 struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
374
375 dw_hdmi_phy_setup_hpd(dw_hdmi, data);
376
377 /* Enable and map pins to 3V grf-controlled io-voltage */
378 regmap_write(hdmi->regmap,
379 RK3328_GRF_SOC_CON4,
380 HIWORD_UPDATE(0, RK3328_HDMI_HPD_SARADC | RK3328_HDMI_CEC_5V |
381 RK3328_HDMI_SDA_5V | RK3328_HDMI_SCL_5V |
382 RK3328_HDMI_HPD_5V));
383 regmap_write(hdmi->regmap,
384 RK3328_GRF_SOC_CON3,
385 HIWORD_UPDATE(0, RK3328_HDMI_SDA5V_GRF | RK3328_HDMI_SCL5V_GRF |
386 RK3328_HDMI_HPD5V_GRF |
387 RK3328_HDMI_CEC5V_GRF));
388 regmap_write(hdmi->regmap,
389 RK3328_GRF_SOC_CON2,
390 HIWORD_UPDATE(RK3328_HDMI_SDAIN_MSK | RK3328_HDMI_SCLIN_MSK,
391 RK3328_HDMI_SDAIN_MSK | RK3328_HDMI_SCLIN_MSK |
392 RK3328_HDMI_HPD_IOE));
393}
394
395static const struct dw_hdmi_phy_ops rk3228_hdmi_phy_ops = {
396 .init = dw_hdmi_rockchip_genphy_init,
397 .disable = dw_hdmi_rockchip_genphy_disable,
398 .read_hpd = dw_hdmi_phy_read_hpd,
399 .update_hpd = dw_hdmi_phy_update_hpd,
400 .setup_hpd = dw_hdmi_rk3228_setup_hpd,
401};
402
403static struct rockchip_hdmi_chip_data rk3228_chip_data = {
404 .lcdsel_grf_reg = -1,
405};
406
407static const struct dw_hdmi_plat_data rk3228_hdmi_drv_data = {
408 .mode_valid = dw_hdmi_rockchip_mode_valid,
409 .mpll_cfg = rockchip_mpll_cfg,
410 .cur_ctr = rockchip_cur_ctr,
411 .phy_config = rockchip_phy_config,
412 .phy_data = &rk3228_chip_data,
413 .phy_ops = &rk3228_hdmi_phy_ops,
414 .phy_name = "inno_dw_hdmi_phy2",
415 .phy_force_vendor = true,
416};
417
418static struct rockchip_hdmi_chip_data rk3288_chip_data = {
419 .lcdsel_grf_reg = RK3288_GRF_SOC_CON6,
420 .lcdsel_big = HIWORD_UPDATE(0, RK3288_HDMI_LCDC_SEL),
421 .lcdsel_lit = HIWORD_UPDATE(RK3288_HDMI_LCDC_SEL, RK3288_HDMI_LCDC_SEL),
422};
423
424static const struct dw_hdmi_plat_data rk3288_hdmi_drv_data = {
425 .mode_valid = dw_hdmi_rockchip_mode_valid,
426 .mpll_cfg = rockchip_mpll_cfg,
427 .cur_ctr = rockchip_cur_ctr,
428 .phy_config = rockchip_phy_config,
429 .phy_data = &rk3288_chip_data,
430};
431
432static const struct dw_hdmi_phy_ops rk3328_hdmi_phy_ops = {
433 .init = dw_hdmi_rockchip_genphy_init,
434 .disable = dw_hdmi_rockchip_genphy_disable,
435 .read_hpd = dw_hdmi_rk3328_read_hpd,
436 .update_hpd = dw_hdmi_phy_update_hpd,
437 .setup_hpd = dw_hdmi_rk3328_setup_hpd,
438};
439
440static struct rockchip_hdmi_chip_data rk3328_chip_data = {
441 .lcdsel_grf_reg = -1,
442};
443
444static const struct dw_hdmi_plat_data rk3328_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 = &rk3328_chip_data,
450 .phy_ops = &rk3328_hdmi_phy_ops,
451 .phy_name = "inno_dw_hdmi_phy2",
452 .phy_force_vendor = true,
453};
454
455static struct rockchip_hdmi_chip_data rk3399_chip_data = {
456 .lcdsel_grf_reg = RK3399_GRF_SOC_CON20,
457 .lcdsel_big = HIWORD_UPDATE(0, RK3399_HDMI_LCDC_SEL),
458 .lcdsel_lit = HIWORD_UPDATE(RK3399_HDMI_LCDC_SEL, RK3399_HDMI_LCDC_SEL),
459};
460
461static const struct dw_hdmi_plat_data rk3399_hdmi_drv_data = {
462 .mode_valid = dw_hdmi_rockchip_mode_valid,
463 .mpll_cfg = rockchip_mpll_cfg,
464 .cur_ctr = rockchip_cur_ctr,
465 .phy_config = rockchip_phy_config,
466 .phy_data = &rk3399_chip_data,
467};
468
469static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = {
470 { .compatible = "rockchip,rk3228-dw-hdmi",
471 .data = &rk3228_hdmi_drv_data
472 },
473 { .compatible = "rockchip,rk3288-dw-hdmi",
474 .data = &rk3288_hdmi_drv_data
475 },
476 { .compatible = "rockchip,rk3328-dw-hdmi",
477 .data = &rk3328_hdmi_drv_data
478 },
479 { .compatible = "rockchip,rk3399-dw-hdmi",
480 .data = &rk3399_hdmi_drv_data
481 },
482 {},
483};
484MODULE_DEVICE_TABLE(of, dw_hdmi_rockchip_dt_ids);
485
486static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
487 void *data)
488{
489 struct platform_device *pdev = to_platform_device(dev);
490 struct dw_hdmi_plat_data *plat_data;
491 const struct of_device_id *match;
492 struct drm_device *drm = data;
493 struct drm_encoder *encoder;
494 struct rockchip_hdmi *hdmi;
495 int ret;
496
497 if (!pdev->dev.of_node)
498 return -ENODEV;
499
500 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
501 if (!hdmi)
502 return -ENOMEM;
503
504 match = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node);
505 plat_data = devm_kmemdup(&pdev->dev, match->data,
506 sizeof(*plat_data), GFP_KERNEL);
507 if (!plat_data)
508 return -ENOMEM;
509
510 hdmi->dev = &pdev->dev;
511 hdmi->chip_data = plat_data->phy_data;
512 plat_data->phy_data = hdmi;
513 encoder = &hdmi->encoder;
514
515 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
516 /*
517 * If we failed to find the CRTC(s) which this encoder is
518 * supposed to be connected to, it's because the CRTC has
519 * not been registered yet. Defer probing, and hope that
520 * the required CRTC is added later.
521 */
522 if (encoder->possible_crtcs == 0)
523 return -EPROBE_DEFER;
524
525 ret = rockchip_hdmi_parse_dt(hdmi);
526 if (ret) {
527 DRM_DEV_ERROR(hdmi->dev, "Unable to parse OF data\n");
528 return ret;
529 }
530
531 ret = clk_prepare_enable(hdmi->vpll_clk);
532 if (ret) {
533 DRM_DEV_ERROR(hdmi->dev, "Failed to enable HDMI vpll: %d\n",
534 ret);
535 return ret;
536 }
537
538 hdmi->phy = devm_phy_optional_get(dev, "hdmi");
539 if (IS_ERR(hdmi->phy)) {
540 ret = PTR_ERR(hdmi->phy);
541 if (ret != -EPROBE_DEFER)
542 DRM_DEV_ERROR(hdmi->dev, "failed to get phy\n");
543 return ret;
544 }
545
546 drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs);
547 drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs,
548 DRM_MODE_ENCODER_TMDS, NULL);
549
550 platform_set_drvdata(pdev, hdmi);
551
552 hdmi->hdmi = dw_hdmi_bind(pdev, encoder, plat_data);
553
554 /*
555 * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
556 * which would have called the encoder cleanup. Do it manually.
557 */
558 if (IS_ERR(hdmi->hdmi)) {
559 ret = PTR_ERR(hdmi->hdmi);
560 drm_encoder_cleanup(encoder);
561 clk_disable_unprepare(hdmi->vpll_clk);
562 }
563
564 return ret;
565}
566
567static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
568 void *data)
569{
570 struct rockchip_hdmi *hdmi = dev_get_drvdata(dev);
571
572 dw_hdmi_unbind(hdmi->hdmi);
573 clk_disable_unprepare(hdmi->vpll_clk);
574}
575
576static const struct component_ops dw_hdmi_rockchip_ops = {
577 .bind = dw_hdmi_rockchip_bind,
578 .unbind = dw_hdmi_rockchip_unbind,
579};
580
581static int dw_hdmi_rockchip_probe(struct platform_device *pdev)
582{
583 return component_add(&pdev->dev, &dw_hdmi_rockchip_ops);
584}
585
586static int dw_hdmi_rockchip_remove(struct platform_device *pdev)
587{
588 component_del(&pdev->dev, &dw_hdmi_rockchip_ops);
589
590 return 0;
591}
592
593static int __maybe_unused dw_hdmi_rockchip_resume(struct device *dev)
594{
595 struct rockchip_hdmi *hdmi = dev_get_drvdata(dev);
596
597 dw_hdmi_resume(hdmi->hdmi);
598
599 return 0;
600}
601
602static const struct dev_pm_ops dw_hdmi_rockchip_pm = {
603 SET_SYSTEM_SLEEP_PM_OPS(NULL, dw_hdmi_rockchip_resume)
604};
605
606struct platform_driver dw_hdmi_rockchip_pltfm_driver = {
607 .probe = dw_hdmi_rockchip_probe,
608 .remove = dw_hdmi_rockchip_remove,
609 .driver = {
610 .name = "dwhdmi-rockchip",
611 .pm = &dw_hdmi_rockchip_pm,
612 .of_match_table = dw_hdmi_rockchip_dt_ids,
613 },
614};
1/*
2 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 */
9
10#include <linux/module.h>
11#include <linux/platform_device.h>
12#include <linux/mfd/syscon.h>
13#include <linux/regmap.h>
14#include <drm/drm_of.h>
15#include <drm/drmP.h>
16#include <drm/drm_crtc_helper.h>
17#include <drm/drm_edid.h>
18#include <drm/bridge/dw_hdmi.h>
19
20#include "rockchip_drm_drv.h"
21#include "rockchip_drm_vop.h"
22
23#define GRF_SOC_CON6 0x025c
24#define HDMI_SEL_VOP_LIT (1 << 4)
25
26struct rockchip_hdmi {
27 struct device *dev;
28 struct regmap *regmap;
29 struct drm_encoder encoder;
30};
31
32#define to_rockchip_hdmi(x) container_of(x, struct rockchip_hdmi, x)
33
34static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = {
35 {
36 27000000, {
37 { 0x00b3, 0x0000},
38 { 0x2153, 0x0000},
39 { 0x40f3, 0x0000}
40 },
41 }, {
42 36000000, {
43 { 0x00b3, 0x0000},
44 { 0x2153, 0x0000},
45 { 0x40f3, 0x0000}
46 },
47 }, {
48 40000000, {
49 { 0x00b3, 0x0000},
50 { 0x2153, 0x0000},
51 { 0x40f3, 0x0000}
52 },
53 }, {
54 54000000, {
55 { 0x0072, 0x0001},
56 { 0x2142, 0x0001},
57 { 0x40a2, 0x0001},
58 },
59 }, {
60 65000000, {
61 { 0x0072, 0x0001},
62 { 0x2142, 0x0001},
63 { 0x40a2, 0x0001},
64 },
65 }, {
66 66000000, {
67 { 0x013e, 0x0003},
68 { 0x217e, 0x0002},
69 { 0x4061, 0x0002}
70 },
71 }, {
72 74250000, {
73 { 0x0072, 0x0001},
74 { 0x2145, 0x0002},
75 { 0x4061, 0x0002}
76 },
77 }, {
78 83500000, {
79 { 0x0072, 0x0001},
80 },
81 }, {
82 108000000, {
83 { 0x0051, 0x0002},
84 { 0x2145, 0x0002},
85 { 0x4061, 0x0002}
86 },
87 }, {
88 106500000, {
89 { 0x0051, 0x0002},
90 { 0x2145, 0x0002},
91 { 0x4061, 0x0002}
92 },
93 }, {
94 146250000, {
95 { 0x0051, 0x0002},
96 { 0x2145, 0x0002},
97 { 0x4061, 0x0002}
98 },
99 }, {
100 148500000, {
101 { 0x0051, 0x0003},
102 { 0x214c, 0x0003},
103 { 0x4064, 0x0003}
104 },
105 }, {
106 ~0UL, {
107 { 0x00a0, 0x000a },
108 { 0x2001, 0x000f },
109 { 0x4002, 0x000f },
110 },
111 }
112};
113
114static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = {
115 /* pixelclk bpp8 bpp10 bpp12 */
116 {
117 40000000, { 0x0018, 0x0018, 0x0018 },
118 }, {
119 65000000, { 0x0028, 0x0028, 0x0028 },
120 }, {
121 66000000, { 0x0038, 0x0038, 0x0038 },
122 }, {
123 74250000, { 0x0028, 0x0038, 0x0038 },
124 }, {
125 83500000, { 0x0028, 0x0038, 0x0038 },
126 }, {
127 146250000, { 0x0038, 0x0038, 0x0038 },
128 }, {
129 148500000, { 0x0000, 0x0038, 0x0038 },
130 }, {
131 ~0UL, { 0x0000, 0x0000, 0x0000},
132 }
133};
134
135static const struct dw_hdmi_phy_config rockchip_phy_config[] = {
136 /*pixelclk symbol term vlev*/
137 { 74250000, 0x8009, 0x0004, 0x0272},
138 { 148500000, 0x802b, 0x0004, 0x028d},
139 { 297000000, 0x8039, 0x0005, 0x028d},
140 { ~0UL, 0x0000, 0x0000, 0x0000}
141};
142
143static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi)
144{
145 struct device_node *np = hdmi->dev->of_node;
146
147 hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
148 if (IS_ERR(hdmi->regmap)) {
149 dev_err(hdmi->dev, "Unable to get rockchip,grf\n");
150 return PTR_ERR(hdmi->regmap);
151 }
152
153 return 0;
154}
155
156static enum drm_mode_status
157dw_hdmi_rockchip_mode_valid(struct drm_connector *connector,
158 struct drm_display_mode *mode)
159{
160 const struct dw_hdmi_mpll_config *mpll_cfg = rockchip_mpll_cfg;
161 int pclk = mode->clock * 1000;
162 bool valid = false;
163 int i;
164
165 for (i = 0; mpll_cfg[i].mpixelclock != (~0UL); i++) {
166 if (pclk == mpll_cfg[i].mpixelclock) {
167 valid = true;
168 break;
169 }
170 }
171
172 return (valid) ? MODE_OK : MODE_BAD;
173}
174
175static const struct drm_encoder_funcs dw_hdmi_rockchip_encoder_funcs = {
176 .destroy = drm_encoder_cleanup,
177};
178
179static void dw_hdmi_rockchip_encoder_disable(struct drm_encoder *encoder)
180{
181}
182
183static bool
184dw_hdmi_rockchip_encoder_mode_fixup(struct drm_encoder *encoder,
185 const struct drm_display_mode *mode,
186 struct drm_display_mode *adj_mode)
187{
188 return true;
189}
190
191static void dw_hdmi_rockchip_encoder_mode_set(struct drm_encoder *encoder,
192 struct drm_display_mode *mode,
193 struct drm_display_mode *adj_mode)
194{
195}
196
197static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder)
198{
199 struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
200 u32 val;
201 int mux;
202
203 mux = drm_of_encoder_active_endpoint_id(hdmi->dev->of_node, encoder);
204 if (mux)
205 val = HDMI_SEL_VOP_LIT | (HDMI_SEL_VOP_LIT << 16);
206 else
207 val = HDMI_SEL_VOP_LIT << 16;
208
209 regmap_write(hdmi->regmap, GRF_SOC_CON6, val);
210 dev_dbg(hdmi->dev, "vop %s output to hdmi\n",
211 (mux) ? "LIT" : "BIG");
212}
213
214static int
215dw_hdmi_rockchip_encoder_atomic_check(struct drm_encoder *encoder,
216 struct drm_crtc_state *crtc_state,
217 struct drm_connector_state *conn_state)
218{
219 struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
220
221 s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
222 s->output_type = DRM_MODE_CONNECTOR_HDMIA;
223
224 return 0;
225}
226
227static const struct drm_encoder_helper_funcs dw_hdmi_rockchip_encoder_helper_funcs = {
228 .mode_fixup = dw_hdmi_rockchip_encoder_mode_fixup,
229 .mode_set = dw_hdmi_rockchip_encoder_mode_set,
230 .enable = dw_hdmi_rockchip_encoder_enable,
231 .disable = dw_hdmi_rockchip_encoder_disable,
232 .atomic_check = dw_hdmi_rockchip_encoder_atomic_check,
233};
234
235static const struct dw_hdmi_plat_data rockchip_hdmi_drv_data = {
236 .mode_valid = dw_hdmi_rockchip_mode_valid,
237 .mpll_cfg = rockchip_mpll_cfg,
238 .cur_ctr = rockchip_cur_ctr,
239 .phy_config = rockchip_phy_config,
240 .dev_type = RK3288_HDMI,
241};
242
243static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = {
244 { .compatible = "rockchip,rk3288-dw-hdmi",
245 .data = &rockchip_hdmi_drv_data
246 },
247 {},
248};
249MODULE_DEVICE_TABLE(of, dw_hdmi_rockchip_dt_ids);
250
251static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
252 void *data)
253{
254 struct platform_device *pdev = to_platform_device(dev);
255 const struct dw_hdmi_plat_data *plat_data;
256 const struct of_device_id *match;
257 struct drm_device *drm = data;
258 struct drm_encoder *encoder;
259 struct rockchip_hdmi *hdmi;
260 struct resource *iores;
261 int irq;
262 int ret;
263
264 if (!pdev->dev.of_node)
265 return -ENODEV;
266
267 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
268 if (!hdmi)
269 return -ENOMEM;
270
271 match = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node);
272 plat_data = match->data;
273 hdmi->dev = &pdev->dev;
274 encoder = &hdmi->encoder;
275
276 irq = platform_get_irq(pdev, 0);
277 if (irq < 0)
278 return irq;
279
280 iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
281 if (!iores)
282 return -ENXIO;
283
284 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node);
285 /*
286 * If we failed to find the CRTC(s) which this encoder is
287 * supposed to be connected to, it's because the CRTC has
288 * not been registered yet. Defer probing, and hope that
289 * the required CRTC is added later.
290 */
291 if (encoder->possible_crtcs == 0)
292 return -EPROBE_DEFER;
293
294 ret = rockchip_hdmi_parse_dt(hdmi);
295 if (ret) {
296 dev_err(hdmi->dev, "Unable to parse OF data\n");
297 return ret;
298 }
299
300 drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs);
301 drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs,
302 DRM_MODE_ENCODER_TMDS, NULL);
303
304 ret = dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data);
305
306 /*
307 * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(),
308 * which would have called the encoder cleanup. Do it manually.
309 */
310 if (ret)
311 drm_encoder_cleanup(encoder);
312
313 return ret;
314}
315
316static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master,
317 void *data)
318{
319 return dw_hdmi_unbind(dev, master, data);
320}
321
322static const struct component_ops dw_hdmi_rockchip_ops = {
323 .bind = dw_hdmi_rockchip_bind,
324 .unbind = dw_hdmi_rockchip_unbind,
325};
326
327static int dw_hdmi_rockchip_probe(struct platform_device *pdev)
328{
329 return component_add(&pdev->dev, &dw_hdmi_rockchip_ops);
330}
331
332static int dw_hdmi_rockchip_remove(struct platform_device *pdev)
333{
334 component_del(&pdev->dev, &dw_hdmi_rockchip_ops);
335
336 return 0;
337}
338
339static struct platform_driver dw_hdmi_rockchip_pltfm_driver = {
340 .probe = dw_hdmi_rockchip_probe,
341 .remove = dw_hdmi_rockchip_remove,
342 .driver = {
343 .name = "dwhdmi-rockchip",
344 .of_match_table = dw_hdmi_rockchip_dt_ids,
345 },
346};
347
348module_platform_driver(dw_hdmi_rockchip_pltfm_driver);
349
350MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>");
351MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
352MODULE_DESCRIPTION("Rockchip Specific DW-HDMI Driver Extension");
353MODULE_LICENSE("GPL");
354MODULE_ALIAS("platform:dwhdmi-rockchip");