This source file includes following definitions.
- msm_hdmi_set_mode
- msm_hdmi_irq
- msm_hdmi_destroy
- msm_hdmi_get_phy
- msm_hdmi_init
- msm_hdmi_modeset_init
- msm_hdmi_audio_hw_params
- msm_hdmi_audio_shutdown
- msm_hdmi_register_audio_driver
- msm_hdmi_bind
- msm_hdmi_unbind
- msm_hdmi_dev_probe
- msm_hdmi_dev_remove
- msm_hdmi_register
- msm_hdmi_unregister
1
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3
4
5
6
7
8 #include <linux/of_irq.h>
9 #include <linux/of_gpio.h>
10
11 #include <sound/hdmi-codec.h>
12 #include "hdmi.h"
13
14 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
15 {
16 uint32_t ctrl = 0;
17 unsigned long flags;
18
19 spin_lock_irqsave(&hdmi->reg_lock, flags);
20 if (power_on) {
21 ctrl |= HDMI_CTRL_ENABLE;
22 if (!hdmi->hdmi_mode) {
23 ctrl |= HDMI_CTRL_HDMI;
24 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
25 ctrl &= ~HDMI_CTRL_HDMI;
26 } else {
27 ctrl |= HDMI_CTRL_HDMI;
28 }
29 } else {
30 ctrl = HDMI_CTRL_HDMI;
31 }
32
33 hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
34 spin_unlock_irqrestore(&hdmi->reg_lock, flags);
35 DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
36 power_on ? "Enable" : "Disable", ctrl);
37 }
38
39 static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
40 {
41 struct hdmi *hdmi = dev_id;
42
43
44 msm_hdmi_connector_irq(hdmi->connector);
45
46
47 msm_hdmi_i2c_irq(hdmi->i2c);
48
49
50 if (hdmi->hdcp_ctrl)
51 msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
52
53
54
55 return IRQ_HANDLED;
56 }
57
58 static void msm_hdmi_destroy(struct hdmi *hdmi)
59 {
60
61
62
63
64 if (hdmi->workq) {
65 flush_workqueue(hdmi->workq);
66 destroy_workqueue(hdmi->workq);
67 }
68 msm_hdmi_hdcp_destroy(hdmi);
69
70 if (hdmi->phy_dev) {
71 put_device(hdmi->phy_dev);
72 hdmi->phy = NULL;
73 hdmi->phy_dev = NULL;
74 }
75
76 if (hdmi->i2c)
77 msm_hdmi_i2c_destroy(hdmi->i2c);
78
79 platform_set_drvdata(hdmi->pdev, NULL);
80 }
81
82 static int msm_hdmi_get_phy(struct hdmi *hdmi)
83 {
84 struct platform_device *pdev = hdmi->pdev;
85 struct platform_device *phy_pdev;
86 struct device_node *phy_node;
87
88 phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
89 if (!phy_node) {
90 DRM_DEV_ERROR(&pdev->dev, "cannot find phy device\n");
91 return -ENXIO;
92 }
93
94 phy_pdev = of_find_device_by_node(phy_node);
95 if (phy_pdev)
96 hdmi->phy = platform_get_drvdata(phy_pdev);
97
98 of_node_put(phy_node);
99
100 if (!phy_pdev || !hdmi->phy) {
101 DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n");
102 return -EPROBE_DEFER;
103 }
104
105 hdmi->phy_dev = get_device(&phy_pdev->dev);
106
107 return 0;
108 }
109
110
111
112
113
114 static struct hdmi *msm_hdmi_init(struct platform_device *pdev)
115 {
116 struct hdmi_platform_config *config = pdev->dev.platform_data;
117 struct hdmi *hdmi = NULL;
118 struct resource *res;
119 int i, ret;
120
121 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
122 if (!hdmi) {
123 ret = -ENOMEM;
124 goto fail;
125 }
126
127 hdmi->pdev = pdev;
128 hdmi->config = config;
129 spin_lock_init(&hdmi->reg_lock);
130
131 hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
132 if (IS_ERR(hdmi->mmio)) {
133 ret = PTR_ERR(hdmi->mmio);
134 goto fail;
135 }
136
137
138 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
139 config->mmio_name);
140 hdmi->mmio_phy_addr = res->start;
141
142 hdmi->qfprom_mmio = msm_ioremap(pdev,
143 config->qfprom_mmio_name, "HDMI_QFPROM");
144 if (IS_ERR(hdmi->qfprom_mmio)) {
145 DRM_DEV_INFO(&pdev->dev, "can't find qfprom resource\n");
146 hdmi->qfprom_mmio = NULL;
147 }
148
149 hdmi->hpd_regs = devm_kcalloc(&pdev->dev,
150 config->hpd_reg_cnt,
151 sizeof(hdmi->hpd_regs[0]),
152 GFP_KERNEL);
153 if (!hdmi->hpd_regs) {
154 ret = -ENOMEM;
155 goto fail;
156 }
157 for (i = 0; i < config->hpd_reg_cnt; i++) {
158 struct regulator *reg;
159
160 reg = devm_regulator_get(&pdev->dev,
161 config->hpd_reg_names[i]);
162 if (IS_ERR(reg)) {
163 ret = PTR_ERR(reg);
164 DRM_DEV_ERROR(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
165 config->hpd_reg_names[i], ret);
166 goto fail;
167 }
168
169 hdmi->hpd_regs[i] = reg;
170 }
171
172 hdmi->pwr_regs = devm_kcalloc(&pdev->dev,
173 config->pwr_reg_cnt,
174 sizeof(hdmi->pwr_regs[0]),
175 GFP_KERNEL);
176 if (!hdmi->pwr_regs) {
177 ret = -ENOMEM;
178 goto fail;
179 }
180 for (i = 0; i < config->pwr_reg_cnt; i++) {
181 struct regulator *reg;
182
183 reg = devm_regulator_get(&pdev->dev,
184 config->pwr_reg_names[i]);
185 if (IS_ERR(reg)) {
186 ret = PTR_ERR(reg);
187 DRM_DEV_ERROR(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
188 config->pwr_reg_names[i], ret);
189 goto fail;
190 }
191
192 hdmi->pwr_regs[i] = reg;
193 }
194
195 hdmi->hpd_clks = devm_kcalloc(&pdev->dev,
196 config->hpd_clk_cnt,
197 sizeof(hdmi->hpd_clks[0]),
198 GFP_KERNEL);
199 if (!hdmi->hpd_clks) {
200 ret = -ENOMEM;
201 goto fail;
202 }
203 for (i = 0; i < config->hpd_clk_cnt; i++) {
204 struct clk *clk;
205
206 clk = msm_clk_get(pdev, config->hpd_clk_names[i]);
207 if (IS_ERR(clk)) {
208 ret = PTR_ERR(clk);
209 DRM_DEV_ERROR(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
210 config->hpd_clk_names[i], ret);
211 goto fail;
212 }
213
214 hdmi->hpd_clks[i] = clk;
215 }
216
217 hdmi->pwr_clks = devm_kcalloc(&pdev->dev,
218 config->pwr_clk_cnt,
219 sizeof(hdmi->pwr_clks[0]),
220 GFP_KERNEL);
221 if (!hdmi->pwr_clks) {
222 ret = -ENOMEM;
223 goto fail;
224 }
225 for (i = 0; i < config->pwr_clk_cnt; i++) {
226 struct clk *clk;
227
228 clk = msm_clk_get(pdev, config->pwr_clk_names[i]);
229 if (IS_ERR(clk)) {
230 ret = PTR_ERR(clk);
231 DRM_DEV_ERROR(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
232 config->pwr_clk_names[i], ret);
233 goto fail;
234 }
235
236 hdmi->pwr_clks[i] = clk;
237 }
238
239 pm_runtime_enable(&pdev->dev);
240
241 hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
242
243 hdmi->i2c = msm_hdmi_i2c_init(hdmi);
244 if (IS_ERR(hdmi->i2c)) {
245 ret = PTR_ERR(hdmi->i2c);
246 DRM_DEV_ERROR(&pdev->dev, "failed to get i2c: %d\n", ret);
247 hdmi->i2c = NULL;
248 goto fail;
249 }
250
251 ret = msm_hdmi_get_phy(hdmi);
252 if (ret) {
253 DRM_DEV_ERROR(&pdev->dev, "failed to get phy\n");
254 goto fail;
255 }
256
257 hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
258 if (IS_ERR(hdmi->hdcp_ctrl)) {
259 dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
260 hdmi->hdcp_ctrl = NULL;
261 }
262
263 return hdmi;
264
265 fail:
266 if (hdmi)
267 msm_hdmi_destroy(hdmi);
268
269 return ERR_PTR(ret);
270 }
271
272
273
274
275
276
277
278
279
280 int msm_hdmi_modeset_init(struct hdmi *hdmi,
281 struct drm_device *dev, struct drm_encoder *encoder)
282 {
283 struct msm_drm_private *priv = dev->dev_private;
284 struct platform_device *pdev = hdmi->pdev;
285 int ret;
286
287 hdmi->dev = dev;
288 hdmi->encoder = encoder;
289
290 hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
291
292 hdmi->bridge = msm_hdmi_bridge_init(hdmi);
293 if (IS_ERR(hdmi->bridge)) {
294 ret = PTR_ERR(hdmi->bridge);
295 DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: %d\n", ret);
296 hdmi->bridge = NULL;
297 goto fail;
298 }
299
300 hdmi->connector = msm_hdmi_connector_init(hdmi);
301 if (IS_ERR(hdmi->connector)) {
302 ret = PTR_ERR(hdmi->connector);
303 DRM_DEV_ERROR(dev->dev, "failed to create HDMI connector: %d\n", ret);
304 hdmi->connector = NULL;
305 goto fail;
306 }
307
308 hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
309 if (hdmi->irq < 0) {
310 ret = hdmi->irq;
311 DRM_DEV_ERROR(dev->dev, "failed to get irq: %d\n", ret);
312 goto fail;
313 }
314
315 ret = devm_request_irq(&pdev->dev, hdmi->irq,
316 msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
317 "hdmi_isr", hdmi);
318 if (ret < 0) {
319 DRM_DEV_ERROR(dev->dev, "failed to request IRQ%u: %d\n",
320 hdmi->irq, ret);
321 goto fail;
322 }
323
324 ret = msm_hdmi_hpd_enable(hdmi->connector);
325 if (ret < 0) {
326 DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
327 goto fail;
328 }
329
330 encoder->bridge = hdmi->bridge;
331
332 priv->bridges[priv->num_bridges++] = hdmi->bridge;
333 priv->connectors[priv->num_connectors++] = hdmi->connector;
334
335 platform_set_drvdata(pdev, hdmi);
336
337 return 0;
338
339 fail:
340
341 if (hdmi->bridge) {
342 msm_hdmi_bridge_destroy(hdmi->bridge);
343 hdmi->bridge = NULL;
344 }
345 if (hdmi->connector) {
346 hdmi->connector->funcs->destroy(hdmi->connector);
347 hdmi->connector = NULL;
348 }
349
350 return ret;
351 }
352
353
354
355
356
357 #define HDMI_CFG(item, entry) \
358 .item ## _names = item ##_names_ ## entry, \
359 .item ## _cnt = ARRAY_SIZE(item ## _names_ ## entry)
360
361 static const char *pwr_reg_names_none[] = {};
362 static const char *hpd_reg_names_none[] = {};
363
364 static struct hdmi_platform_config hdmi_tx_8660_config;
365
366 static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
367 static const char *hpd_clk_names_8960[] = {"core", "master_iface", "slave_iface"};
368
369 static struct hdmi_platform_config hdmi_tx_8960_config = {
370 HDMI_CFG(hpd_reg, 8960),
371 HDMI_CFG(hpd_clk, 8960),
372 };
373
374 static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
375 static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
376 static const char *pwr_clk_names_8x74[] = {"extp", "alt_iface"};
377 static const char *hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"};
378 static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
379
380 static struct hdmi_platform_config hdmi_tx_8974_config = {
381 HDMI_CFG(pwr_reg, 8x74),
382 HDMI_CFG(hpd_reg, 8x74),
383 HDMI_CFG(pwr_clk, 8x74),
384 HDMI_CFG(hpd_clk, 8x74),
385 .hpd_freq = hpd_clk_freq_8x74,
386 };
387
388 static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
389
390 static struct hdmi_platform_config hdmi_tx_8084_config = {
391 HDMI_CFG(pwr_reg, 8x74),
392 HDMI_CFG(hpd_reg, 8084),
393 HDMI_CFG(pwr_clk, 8x74),
394 HDMI_CFG(hpd_clk, 8x74),
395 .hpd_freq = hpd_clk_freq_8x74,
396 };
397
398 static struct hdmi_platform_config hdmi_tx_8994_config = {
399 HDMI_CFG(pwr_reg, 8x74),
400 HDMI_CFG(hpd_reg, none),
401 HDMI_CFG(pwr_clk, 8x74),
402 HDMI_CFG(hpd_clk, 8x74),
403 .hpd_freq = hpd_clk_freq_8x74,
404 };
405
406 static struct hdmi_platform_config hdmi_tx_8996_config = {
407 HDMI_CFG(pwr_reg, none),
408 HDMI_CFG(hpd_reg, none),
409 HDMI_CFG(pwr_clk, 8x74),
410 HDMI_CFG(hpd_clk, 8x74),
411 .hpd_freq = hpd_clk_freq_8x74,
412 };
413
414 static const struct {
415 const char *name;
416 const bool output;
417 const int value;
418 const char *label;
419 } msm_hdmi_gpio_pdata[] = {
420 { "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
421 { "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
422 { "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
423 { "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
424 { "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
425 { "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
426 };
427
428
429
430
431 static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
432 struct hdmi_codec_daifmt *daifmt,
433 struct hdmi_codec_params *params)
434 {
435 struct hdmi *hdmi = dev_get_drvdata(dev);
436 unsigned int chan;
437 unsigned int channel_allocation = 0;
438 unsigned int rate;
439 unsigned int level_shift = 0;
440 bool down_mix = false;
441
442 DRM_DEV_DEBUG(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
443 params->sample_width, params->cea.channels);
444
445 switch (params->cea.channels) {
446 case 2:
447
448 channel_allocation = 0;
449 chan = MSM_HDMI_AUDIO_CHANNEL_2;
450 break;
451 case 4:
452
453 channel_allocation = 0x3;
454 chan = MSM_HDMI_AUDIO_CHANNEL_4;
455 break;
456 case 6:
457
458 channel_allocation = 0x0B;
459 chan = MSM_HDMI_AUDIO_CHANNEL_6;
460 break;
461 case 8:
462
463 channel_allocation = 0x1F;
464 chan = MSM_HDMI_AUDIO_CHANNEL_8;
465 break;
466 default:
467 return -EINVAL;
468 }
469
470 switch (params->sample_rate) {
471 case 32000:
472 rate = HDMI_SAMPLE_RATE_32KHZ;
473 break;
474 case 44100:
475 rate = HDMI_SAMPLE_RATE_44_1KHZ;
476 break;
477 case 48000:
478 rate = HDMI_SAMPLE_RATE_48KHZ;
479 break;
480 case 88200:
481 rate = HDMI_SAMPLE_RATE_88_2KHZ;
482 break;
483 case 96000:
484 rate = HDMI_SAMPLE_RATE_96KHZ;
485 break;
486 case 176400:
487 rate = HDMI_SAMPLE_RATE_176_4KHZ;
488 break;
489 case 192000:
490 rate = HDMI_SAMPLE_RATE_192KHZ;
491 break;
492 default:
493 DRM_DEV_ERROR(dev, "rate[%d] not supported!\n",
494 params->sample_rate);
495 return -EINVAL;
496 }
497
498 msm_hdmi_audio_set_sample_rate(hdmi, rate);
499 msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
500 level_shift, down_mix);
501
502 return 0;
503 }
504
505 static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
506 {
507 struct hdmi *hdmi = dev_get_drvdata(dev);
508
509 msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
510 }
511
512 static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
513 .hw_params = msm_hdmi_audio_hw_params,
514 .audio_shutdown = msm_hdmi_audio_shutdown,
515 };
516
517 static struct hdmi_codec_pdata codec_data = {
518 .ops = &msm_hdmi_audio_codec_ops,
519 .max_i2s_channels = 8,
520 .i2s = 1,
521 };
522
523 static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
524 {
525 hdmi->audio_pdev = platform_device_register_data(dev,
526 HDMI_CODEC_DRV_NAME,
527 PLATFORM_DEVID_AUTO,
528 &codec_data,
529 sizeof(codec_data));
530 return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
531 }
532
533 static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
534 {
535 struct drm_device *drm = dev_get_drvdata(master);
536 struct msm_drm_private *priv = drm->dev_private;
537 struct hdmi_platform_config *hdmi_cfg;
538 struct hdmi *hdmi;
539 struct device_node *of_node = dev->of_node;
540 int i, err;
541
542 hdmi_cfg = (struct hdmi_platform_config *)
543 of_device_get_match_data(dev);
544 if (!hdmi_cfg) {
545 DRM_DEV_ERROR(dev, "unknown hdmi_cfg: %pOFn\n", of_node);
546 return -ENXIO;
547 }
548
549 hdmi_cfg->mmio_name = "core_physical";
550 hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
551
552 for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
553 const char *name = msm_hdmi_gpio_pdata[i].name;
554 struct gpio_desc *gpiod;
555
556
557
558
559
560
561 gpiod = devm_gpiod_get_optional(dev, name, GPIOD_ASIS);
562
563 if (IS_ERR(gpiod))
564 return PTR_ERR(gpiod);
565 if (!gpiod) {
566
567 char name3[32];
568
569
570
571
572
573
574 if (sscanf(name, "qcom,hdmi-tx-%s", name3))
575 gpiod = devm_gpiod_get_optional(dev, name3, GPIOD_ASIS);
576 if (IS_ERR(gpiod))
577 return PTR_ERR(gpiod);
578 if (!gpiod)
579 DBG("failed to get gpio: %s", name);
580 }
581 hdmi_cfg->gpios[i].gpiod = gpiod;
582 if (gpiod)
583 gpiod_set_consumer_name(gpiod, msm_hdmi_gpio_pdata[i].label);
584 hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output;
585 hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value;
586 }
587
588 dev->platform_data = hdmi_cfg;
589
590 hdmi = msm_hdmi_init(to_platform_device(dev));
591 if (IS_ERR(hdmi))
592 return PTR_ERR(hdmi);
593 priv->hdmi = hdmi;
594
595 err = msm_hdmi_register_audio_driver(hdmi, dev);
596 if (err) {
597 DRM_ERROR("Failed to attach an audio codec %d\n", err);
598 hdmi->audio_pdev = NULL;
599 }
600
601 return 0;
602 }
603
604 static void msm_hdmi_unbind(struct device *dev, struct device *master,
605 void *data)
606 {
607 struct drm_device *drm = dev_get_drvdata(master);
608 struct msm_drm_private *priv = drm->dev_private;
609 if (priv->hdmi) {
610 if (priv->hdmi->audio_pdev)
611 platform_device_unregister(priv->hdmi->audio_pdev);
612
613 msm_hdmi_destroy(priv->hdmi);
614 priv->hdmi = NULL;
615 }
616 }
617
618 static const struct component_ops msm_hdmi_ops = {
619 .bind = msm_hdmi_bind,
620 .unbind = msm_hdmi_unbind,
621 };
622
623 static int msm_hdmi_dev_probe(struct platform_device *pdev)
624 {
625 return component_add(&pdev->dev, &msm_hdmi_ops);
626 }
627
628 static int msm_hdmi_dev_remove(struct platform_device *pdev)
629 {
630 component_del(&pdev->dev, &msm_hdmi_ops);
631 return 0;
632 }
633
634 static const struct of_device_id msm_hdmi_dt_match[] = {
635 { .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
636 { .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
637 { .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
638 { .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
639 { .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
640 { .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
641 {}
642 };
643
644 static struct platform_driver msm_hdmi_driver = {
645 .probe = msm_hdmi_dev_probe,
646 .remove = msm_hdmi_dev_remove,
647 .driver = {
648 .name = "hdmi_msm",
649 .of_match_table = msm_hdmi_dt_match,
650 },
651 };
652
653 void __init msm_hdmi_register(void)
654 {
655 msm_hdmi_phy_driver_register();
656 platform_driver_register(&msm_hdmi_driver);
657 }
658
659 void __exit msm_hdmi_unregister(void)
660 {
661 platform_driver_unregister(&msm_hdmi_driver);
662 msm_hdmi_phy_driver_unregister();
663 }