xref: /openbmc/linux/drivers/gpu/drm/msm/hdmi/hdmi.c (revision 8931ddd8)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2014 The Linux Foundation. All rights reserved.
4  * Copyright (C) 2013 Red Hat
5  * Author: Rob Clark <robdclark@gmail.com>
6  */
7 
8 #include <linux/of_irq.h>
9 #include <linux/of_gpio.h>
10 
11 #include <drm/drm_bridge_connector.h>
12 
13 #include <sound/hdmi-codec.h>
14 #include "hdmi.h"
15 
16 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
17 {
18 	uint32_t ctrl = 0;
19 	unsigned long flags;
20 
21 	spin_lock_irqsave(&hdmi->reg_lock, flags);
22 	if (power_on) {
23 		ctrl |= HDMI_CTRL_ENABLE;
24 		if (!hdmi->hdmi_mode) {
25 			ctrl |= HDMI_CTRL_HDMI;
26 			hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
27 			ctrl &= ~HDMI_CTRL_HDMI;
28 		} else {
29 			ctrl |= HDMI_CTRL_HDMI;
30 		}
31 	} else {
32 		ctrl = HDMI_CTRL_HDMI;
33 	}
34 
35 	hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
36 	spin_unlock_irqrestore(&hdmi->reg_lock, flags);
37 	DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
38 			power_on ? "Enable" : "Disable", ctrl);
39 }
40 
41 static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
42 {
43 	struct hdmi *hdmi = dev_id;
44 
45 	/* Process HPD: */
46 	msm_hdmi_hpd_irq(hdmi->bridge);
47 
48 	/* Process DDC: */
49 	msm_hdmi_i2c_irq(hdmi->i2c);
50 
51 	/* Process HDCP: */
52 	if (hdmi->hdcp_ctrl)
53 		msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
54 
55 	/* TODO audio.. */
56 
57 	return IRQ_HANDLED;
58 }
59 
60 static void msm_hdmi_destroy(struct hdmi *hdmi)
61 {
62 	/*
63 	 * at this point, hpd has been disabled,
64 	 * after flush workq, it's safe to deinit hdcp
65 	 */
66 	if (hdmi->workq)
67 		destroy_workqueue(hdmi->workq);
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) {
101 		DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n");
102 		return -EPROBE_DEFER;
103 	}
104 	if (!hdmi->phy) {
105 		DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n");
106 		put_device(&phy_pdev->dev);
107 		return -EPROBE_DEFER;
108 	}
109 
110 	hdmi->phy_dev = get_device(&phy_pdev->dev);
111 
112 	return 0;
113 }
114 
115 /* construct hdmi at bind/probe time, grab all the resources.  If
116  * we are to EPROBE_DEFER we want to do it here, rather than later
117  * at modeset_init() time
118  */
119 static struct hdmi *msm_hdmi_init(struct platform_device *pdev)
120 {
121 	struct hdmi_platform_config *config = pdev->dev.platform_data;
122 	struct hdmi *hdmi = NULL;
123 	struct resource *res;
124 	int i, ret;
125 
126 	hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
127 	if (!hdmi) {
128 		ret = -ENOMEM;
129 		goto fail;
130 	}
131 
132 	hdmi->pdev = pdev;
133 	hdmi->config = config;
134 	spin_lock_init(&hdmi->reg_lock);
135 
136 	hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
137 	if (IS_ERR(hdmi->mmio)) {
138 		ret = PTR_ERR(hdmi->mmio);
139 		goto fail;
140 	}
141 
142 	/* HDCP needs physical address of hdmi register */
143 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
144 		config->mmio_name);
145 	hdmi->mmio_phy_addr = res->start;
146 
147 	hdmi->qfprom_mmio = msm_ioremap(pdev,
148 		config->qfprom_mmio_name, "HDMI_QFPROM");
149 	if (IS_ERR(hdmi->qfprom_mmio)) {
150 		DRM_DEV_INFO(&pdev->dev, "can't find qfprom resource\n");
151 		hdmi->qfprom_mmio = NULL;
152 	}
153 
154 	hdmi->hpd_regs = devm_kcalloc(&pdev->dev,
155 				      config->hpd_reg_cnt,
156 				      sizeof(hdmi->hpd_regs[0]),
157 				      GFP_KERNEL);
158 	if (!hdmi->hpd_regs) {
159 		ret = -ENOMEM;
160 		goto fail;
161 	}
162 	for (i = 0; i < config->hpd_reg_cnt; i++)
163 		hdmi->hpd_regs[i].supply = config->hpd_reg_names[i];
164 
165 	ret = devm_regulator_bulk_get(&pdev->dev, config->hpd_reg_cnt, hdmi->hpd_regs);
166 	if (ret) {
167 		DRM_DEV_ERROR(&pdev->dev, "failed to get hpd regulator: %d\n", ret);
168 		goto fail;
169 	}
170 
171 	hdmi->pwr_regs = devm_kcalloc(&pdev->dev,
172 				      config->pwr_reg_cnt,
173 				      sizeof(hdmi->pwr_regs[0]),
174 				      GFP_KERNEL);
175 	if (!hdmi->pwr_regs) {
176 		ret = -ENOMEM;
177 		goto fail;
178 	}
179 
180 	ret = devm_regulator_bulk_get(&pdev->dev, config->pwr_reg_cnt, hdmi->pwr_regs);
181 	if (ret) {
182 		DRM_DEV_ERROR(&pdev->dev, "failed to get pwr regulator: %d\n", ret);
183 		goto fail;
184 	}
185 
186 	hdmi->hpd_clks = devm_kcalloc(&pdev->dev,
187 				      config->hpd_clk_cnt,
188 				      sizeof(hdmi->hpd_clks[0]),
189 				      GFP_KERNEL);
190 	if (!hdmi->hpd_clks) {
191 		ret = -ENOMEM;
192 		goto fail;
193 	}
194 	for (i = 0; i < config->hpd_clk_cnt; i++) {
195 		struct clk *clk;
196 
197 		clk = msm_clk_get(pdev, config->hpd_clk_names[i]);
198 		if (IS_ERR(clk)) {
199 			ret = PTR_ERR(clk);
200 			DRM_DEV_ERROR(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
201 					config->hpd_clk_names[i], ret);
202 			goto fail;
203 		}
204 
205 		hdmi->hpd_clks[i] = clk;
206 	}
207 
208 	hdmi->pwr_clks = devm_kcalloc(&pdev->dev,
209 				      config->pwr_clk_cnt,
210 				      sizeof(hdmi->pwr_clks[0]),
211 				      GFP_KERNEL);
212 	if (!hdmi->pwr_clks) {
213 		ret = -ENOMEM;
214 		goto fail;
215 	}
216 	for (i = 0; i < config->pwr_clk_cnt; i++) {
217 		struct clk *clk;
218 
219 		clk = msm_clk_get(pdev, config->pwr_clk_names[i]);
220 		if (IS_ERR(clk)) {
221 			ret = PTR_ERR(clk);
222 			DRM_DEV_ERROR(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
223 					config->pwr_clk_names[i], ret);
224 			goto fail;
225 		}
226 
227 		hdmi->pwr_clks[i] = clk;
228 	}
229 
230 	pm_runtime_enable(&pdev->dev);
231 
232 	hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
233 
234 	hdmi->i2c = msm_hdmi_i2c_init(hdmi);
235 	if (IS_ERR(hdmi->i2c)) {
236 		ret = PTR_ERR(hdmi->i2c);
237 		DRM_DEV_ERROR(&pdev->dev, "failed to get i2c: %d\n", ret);
238 		hdmi->i2c = NULL;
239 		goto fail;
240 	}
241 
242 	ret = msm_hdmi_get_phy(hdmi);
243 	if (ret) {
244 		DRM_DEV_ERROR(&pdev->dev, "failed to get phy\n");
245 		goto fail;
246 	}
247 
248 	hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
249 	if (IS_ERR(hdmi->hdcp_ctrl)) {
250 		dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
251 		hdmi->hdcp_ctrl = NULL;
252 	}
253 
254 	return hdmi;
255 
256 fail:
257 	if (hdmi)
258 		msm_hdmi_destroy(hdmi);
259 
260 	return ERR_PTR(ret);
261 }
262 
263 /* Second part of initialization, the drm/kms level modeset_init,
264  * constructs/initializes mode objects, etc, is called from master
265  * driver (not hdmi sub-device's probe/bind!)
266  *
267  * Any resource (regulator/clk/etc) which could be missing at boot
268  * should be handled in msm_hdmi_init() so that failure happens from
269  * hdmi sub-device's probe.
270  */
271 int msm_hdmi_modeset_init(struct hdmi *hdmi,
272 		struct drm_device *dev, struct drm_encoder *encoder)
273 {
274 	struct msm_drm_private *priv = dev->dev_private;
275 	struct platform_device *pdev = hdmi->pdev;
276 	int ret;
277 
278 	hdmi->dev = dev;
279 	hdmi->encoder = encoder;
280 
281 	hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
282 
283 	hdmi->bridge = msm_hdmi_bridge_init(hdmi);
284 	if (IS_ERR(hdmi->bridge)) {
285 		ret = PTR_ERR(hdmi->bridge);
286 		DRM_DEV_ERROR(dev->dev, "failed to create HDMI bridge: %d\n", ret);
287 		hdmi->bridge = NULL;
288 		goto fail;
289 	}
290 
291 	hdmi->connector = drm_bridge_connector_init(hdmi->dev, encoder);
292 	if (IS_ERR(hdmi->connector)) {
293 		ret = PTR_ERR(hdmi->connector);
294 		DRM_DEV_ERROR(dev->dev, "failed to create HDMI connector: %d\n", ret);
295 		hdmi->connector = NULL;
296 		goto fail;
297 	}
298 
299 	drm_connector_attach_encoder(hdmi->connector, hdmi->encoder);
300 
301 	hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
302 	if (hdmi->irq < 0) {
303 		ret = hdmi->irq;
304 		DRM_DEV_ERROR(dev->dev, "failed to get irq: %d\n", ret);
305 		goto fail;
306 	}
307 
308 	ret = devm_request_irq(&pdev->dev, hdmi->irq,
309 			msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
310 			"hdmi_isr", hdmi);
311 	if (ret < 0) {
312 		DRM_DEV_ERROR(dev->dev, "failed to request IRQ%u: %d\n",
313 				hdmi->irq, ret);
314 		goto fail;
315 	}
316 
317 	drm_bridge_connector_enable_hpd(hdmi->connector);
318 
319 	ret = msm_hdmi_hpd_enable(hdmi->bridge);
320 	if (ret < 0) {
321 		DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
322 		goto fail;
323 	}
324 
325 	priv->bridges[priv->num_bridges++]       = hdmi->bridge;
326 	priv->connectors[priv->num_connectors++] = hdmi->connector;
327 
328 	platform_set_drvdata(pdev, hdmi);
329 
330 	return 0;
331 
332 fail:
333 	/* bridge is normally destroyed by drm: */
334 	if (hdmi->bridge) {
335 		msm_hdmi_bridge_destroy(hdmi->bridge);
336 		hdmi->bridge = NULL;
337 	}
338 	if (hdmi->connector) {
339 		hdmi->connector->funcs->destroy(hdmi->connector);
340 		hdmi->connector = NULL;
341 	}
342 
343 	return ret;
344 }
345 
346 /*
347  * The hdmi device:
348  */
349 
350 #define HDMI_CFG(item, entry) \
351 	.item ## _names = item ##_names_ ## entry, \
352 	.item ## _cnt   = ARRAY_SIZE(item ## _names_ ## entry)
353 
354 static const char *pwr_reg_names_none[] = {};
355 static const char *hpd_reg_names_none[] = {};
356 
357 static struct hdmi_platform_config hdmi_tx_8660_config;
358 
359 static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
360 static const char *hpd_clk_names_8960[] = {"core", "master_iface", "slave_iface"};
361 
362 static struct hdmi_platform_config hdmi_tx_8960_config = {
363 		HDMI_CFG(hpd_reg, 8960),
364 		HDMI_CFG(hpd_clk, 8960),
365 };
366 
367 static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
368 static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
369 static const char *pwr_clk_names_8x74[] = {"extp", "alt_iface"};
370 static const char *hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"};
371 static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
372 
373 static struct hdmi_platform_config hdmi_tx_8974_config = {
374 		HDMI_CFG(pwr_reg, 8x74),
375 		HDMI_CFG(hpd_reg, 8x74),
376 		HDMI_CFG(pwr_clk, 8x74),
377 		HDMI_CFG(hpd_clk, 8x74),
378 		.hpd_freq      = hpd_clk_freq_8x74,
379 };
380 
381 static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
382 
383 static struct hdmi_platform_config hdmi_tx_8084_config = {
384 		HDMI_CFG(pwr_reg, 8x74),
385 		HDMI_CFG(hpd_reg, 8084),
386 		HDMI_CFG(pwr_clk, 8x74),
387 		HDMI_CFG(hpd_clk, 8x74),
388 		.hpd_freq      = hpd_clk_freq_8x74,
389 };
390 
391 static struct hdmi_platform_config hdmi_tx_8994_config = {
392 		HDMI_CFG(pwr_reg, 8x74),
393 		HDMI_CFG(hpd_reg, none),
394 		HDMI_CFG(pwr_clk, 8x74),
395 		HDMI_CFG(hpd_clk, 8x74),
396 		.hpd_freq      = hpd_clk_freq_8x74,
397 };
398 
399 static struct hdmi_platform_config hdmi_tx_8996_config = {
400 		HDMI_CFG(pwr_reg, none),
401 		HDMI_CFG(hpd_reg, none),
402 		HDMI_CFG(pwr_clk, 8x74),
403 		HDMI_CFG(hpd_clk, 8x74),
404 		.hpd_freq      = hpd_clk_freq_8x74,
405 };
406 
407 static const struct {
408 	const char *name;
409 	const bool output;
410 	const int value;
411 	const char *label;
412 } msm_hdmi_gpio_pdata[] = {
413 	{ "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
414 	{ "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
415 	{ "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
416 	{ "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
417 	{ "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
418 	{ "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
419 };
420 
421 /*
422  * HDMI audio codec callbacks
423  */
424 static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
425 				    struct hdmi_codec_daifmt *daifmt,
426 				    struct hdmi_codec_params *params)
427 {
428 	struct hdmi *hdmi = dev_get_drvdata(dev);
429 	unsigned int chan;
430 	unsigned int channel_allocation = 0;
431 	unsigned int rate;
432 	unsigned int level_shift  = 0; /* 0dB */
433 	bool down_mix = false;
434 
435 	DRM_DEV_DEBUG(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
436 		 params->sample_width, params->cea.channels);
437 
438 	switch (params->cea.channels) {
439 	case 2:
440 		/* FR and FL speakers */
441 		channel_allocation  = 0;
442 		chan = MSM_HDMI_AUDIO_CHANNEL_2;
443 		break;
444 	case 4:
445 		/* FC, LFE, FR and FL speakers */
446 		channel_allocation  = 0x3;
447 		chan = MSM_HDMI_AUDIO_CHANNEL_4;
448 		break;
449 	case 6:
450 		/* RR, RL, FC, LFE, FR and FL speakers */
451 		channel_allocation  = 0x0B;
452 		chan = MSM_HDMI_AUDIO_CHANNEL_6;
453 		break;
454 	case 8:
455 		/* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
456 		channel_allocation  = 0x1F;
457 		chan = MSM_HDMI_AUDIO_CHANNEL_8;
458 		break;
459 	default:
460 		return -EINVAL;
461 	}
462 
463 	switch (params->sample_rate) {
464 	case 32000:
465 		rate = HDMI_SAMPLE_RATE_32KHZ;
466 		break;
467 	case 44100:
468 		rate = HDMI_SAMPLE_RATE_44_1KHZ;
469 		break;
470 	case 48000:
471 		rate = HDMI_SAMPLE_RATE_48KHZ;
472 		break;
473 	case 88200:
474 		rate = HDMI_SAMPLE_RATE_88_2KHZ;
475 		break;
476 	case 96000:
477 		rate = HDMI_SAMPLE_RATE_96KHZ;
478 		break;
479 	case 176400:
480 		rate = HDMI_SAMPLE_RATE_176_4KHZ;
481 		break;
482 	case 192000:
483 		rate = HDMI_SAMPLE_RATE_192KHZ;
484 		break;
485 	default:
486 		DRM_DEV_ERROR(dev, "rate[%d] not supported!\n",
487 			params->sample_rate);
488 		return -EINVAL;
489 	}
490 
491 	msm_hdmi_audio_set_sample_rate(hdmi, rate);
492 	msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
493 			      level_shift, down_mix);
494 
495 	return 0;
496 }
497 
498 static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
499 {
500 	struct hdmi *hdmi = dev_get_drvdata(dev);
501 
502 	msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
503 }
504 
505 static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
506 	.hw_params = msm_hdmi_audio_hw_params,
507 	.audio_shutdown = msm_hdmi_audio_shutdown,
508 };
509 
510 static struct hdmi_codec_pdata codec_data = {
511 	.ops = &msm_hdmi_audio_codec_ops,
512 	.max_i2s_channels = 8,
513 	.i2s = 1,
514 };
515 
516 static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
517 {
518 	hdmi->audio_pdev = platform_device_register_data(dev,
519 							 HDMI_CODEC_DRV_NAME,
520 							 PLATFORM_DEVID_AUTO,
521 							 &codec_data,
522 							 sizeof(codec_data));
523 	return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
524 }
525 
526 static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
527 {
528 	struct msm_drm_private *priv = dev_get_drvdata(master);
529 	struct hdmi_platform_config *hdmi_cfg;
530 	struct hdmi *hdmi;
531 	struct device_node *of_node = dev->of_node;
532 	int i, err;
533 
534 	hdmi_cfg = (struct hdmi_platform_config *)
535 			of_device_get_match_data(dev);
536 	if (!hdmi_cfg) {
537 		DRM_DEV_ERROR(dev, "unknown hdmi_cfg: %pOFn\n", of_node);
538 		return -ENXIO;
539 	}
540 
541 	hdmi_cfg->mmio_name     = "core_physical";
542 	hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
543 
544 	for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
545 		const char *name = msm_hdmi_gpio_pdata[i].name;
546 		struct gpio_desc *gpiod;
547 
548 		/*
549 		 * We are fetching the GPIO lines "as is" since the connector
550 		 * code is enabling and disabling the lines. Until that point
551 		 * the power-on default value will be kept.
552 		 */
553 		gpiod = devm_gpiod_get_optional(dev, name, GPIOD_ASIS);
554 		/* This will catch e.g. -PROBE_DEFER */
555 		if (IS_ERR(gpiod))
556 			return PTR_ERR(gpiod);
557 		if (!gpiod) {
558 			/* Try a second time, stripping down the name */
559 			char name3[32];
560 
561 			/*
562 			 * Try again after stripping out the "qcom,hdmi-tx"
563 			 * prefix. This is mainly to match "hpd-gpios" used
564 			 * in the upstream bindings.
565 			 */
566 			if (sscanf(name, "qcom,hdmi-tx-%s", name3))
567 				gpiod = devm_gpiod_get_optional(dev, name3, GPIOD_ASIS);
568 			if (IS_ERR(gpiod))
569 				return PTR_ERR(gpiod);
570 			if (!gpiod)
571 				DBG("failed to get gpio: %s", name);
572 		}
573 		hdmi_cfg->gpios[i].gpiod = gpiod;
574 		if (gpiod)
575 			gpiod_set_consumer_name(gpiod, msm_hdmi_gpio_pdata[i].label);
576 		hdmi_cfg->gpios[i].output = msm_hdmi_gpio_pdata[i].output;
577 		hdmi_cfg->gpios[i].value = msm_hdmi_gpio_pdata[i].value;
578 	}
579 
580 	dev->platform_data = hdmi_cfg;
581 
582 	hdmi = msm_hdmi_init(to_platform_device(dev));
583 	if (IS_ERR(hdmi))
584 		return PTR_ERR(hdmi);
585 	priv->hdmi = hdmi;
586 
587 	err = msm_hdmi_register_audio_driver(hdmi, dev);
588 	if (err) {
589 		DRM_ERROR("Failed to attach an audio codec %d\n", err);
590 		hdmi->audio_pdev = NULL;
591 	}
592 
593 	return 0;
594 }
595 
596 static void msm_hdmi_unbind(struct device *dev, struct device *master,
597 		void *data)
598 {
599 	struct msm_drm_private *priv = dev_get_drvdata(master);
600 
601 	if (priv->hdmi) {
602 		if (priv->hdmi->audio_pdev)
603 			platform_device_unregister(priv->hdmi->audio_pdev);
604 
605 		msm_hdmi_destroy(priv->hdmi);
606 		priv->hdmi = NULL;
607 	}
608 }
609 
610 static const struct component_ops msm_hdmi_ops = {
611 		.bind   = msm_hdmi_bind,
612 		.unbind = msm_hdmi_unbind,
613 };
614 
615 static int msm_hdmi_dev_probe(struct platform_device *pdev)
616 {
617 	return component_add(&pdev->dev, &msm_hdmi_ops);
618 }
619 
620 static int msm_hdmi_dev_remove(struct platform_device *pdev)
621 {
622 	component_del(&pdev->dev, &msm_hdmi_ops);
623 	return 0;
624 }
625 
626 static const struct of_device_id msm_hdmi_dt_match[] = {
627 	{ .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
628 	{ .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
629 	{ .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
630 	{ .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
631 	{ .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
632 	{ .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
633 	{}
634 };
635 
636 static struct platform_driver msm_hdmi_driver = {
637 	.probe = msm_hdmi_dev_probe,
638 	.remove = msm_hdmi_dev_remove,
639 	.driver = {
640 		.name = "hdmi_msm",
641 		.of_match_table = msm_hdmi_dt_match,
642 	},
643 };
644 
645 void __init msm_hdmi_register(void)
646 {
647 	msm_hdmi_phy_driver_register();
648 	platform_driver_register(&msm_hdmi_driver);
649 }
650 
651 void __exit msm_hdmi_unregister(void)
652 {
653 	platform_driver_unregister(&msm_hdmi_driver);
654 	msm_hdmi_phy_driver_unregister();
655 }
656