xref: /openbmc/linux/drivers/gpu/drm/msm/hdmi/hdmi.c (revision 68198dca)
1 /*
2  * Copyright (c) 2014 The Linux Foundation. All rights reserved.
3  * Copyright (C) 2013 Red Hat
4  * Author: Rob Clark <robdclark@gmail.com>
5  *
6  * This program is free software; you can redistribute it and/or modify it
7  * under the terms of the GNU General Public License version 2 as published by
8  * the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13  * more details.
14  *
15  * You should have received a copy of the GNU General Public License along with
16  * this program.  If not, see <http://www.gnu.org/licenses/>.
17  */
18 
19 #include <linux/of_irq.h>
20 #include <linux/of_gpio.h>
21 
22 #include <sound/hdmi-codec.h>
23 #include "hdmi.h"
24 
25 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on)
26 {
27 	uint32_t ctrl = 0;
28 	unsigned long flags;
29 
30 	spin_lock_irqsave(&hdmi->reg_lock, flags);
31 	if (power_on) {
32 		ctrl |= HDMI_CTRL_ENABLE;
33 		if (!hdmi->hdmi_mode) {
34 			ctrl |= HDMI_CTRL_HDMI;
35 			hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
36 			ctrl &= ~HDMI_CTRL_HDMI;
37 		} else {
38 			ctrl |= HDMI_CTRL_HDMI;
39 		}
40 	} else {
41 		ctrl = HDMI_CTRL_HDMI;
42 	}
43 
44 	hdmi_write(hdmi, REG_HDMI_CTRL, ctrl);
45 	spin_unlock_irqrestore(&hdmi->reg_lock, flags);
46 	DBG("HDMI Core: %s, HDMI_CTRL=0x%08x",
47 			power_on ? "Enable" : "Disable", ctrl);
48 }
49 
50 static irqreturn_t msm_hdmi_irq(int irq, void *dev_id)
51 {
52 	struct hdmi *hdmi = dev_id;
53 
54 	/* Process HPD: */
55 	msm_hdmi_connector_irq(hdmi->connector);
56 
57 	/* Process DDC: */
58 	msm_hdmi_i2c_irq(hdmi->i2c);
59 
60 	/* Process HDCP: */
61 	if (hdmi->hdcp_ctrl)
62 		msm_hdmi_hdcp_irq(hdmi->hdcp_ctrl);
63 
64 	/* TODO audio.. */
65 
66 	return IRQ_HANDLED;
67 }
68 
69 static void msm_hdmi_destroy(struct hdmi *hdmi)
70 {
71 	/*
72 	 * at this point, hpd has been disabled,
73 	 * after flush workq, it's safe to deinit hdcp
74 	 */
75 	if (hdmi->workq) {
76 		flush_workqueue(hdmi->workq);
77 		destroy_workqueue(hdmi->workq);
78 	}
79 	msm_hdmi_hdcp_destroy(hdmi);
80 
81 	if (hdmi->phy_dev) {
82 		put_device(hdmi->phy_dev);
83 		hdmi->phy = NULL;
84 		hdmi->phy_dev = NULL;
85 	}
86 
87 	if (hdmi->i2c)
88 		msm_hdmi_i2c_destroy(hdmi->i2c);
89 
90 	platform_set_drvdata(hdmi->pdev, NULL);
91 }
92 
93 static int msm_hdmi_get_phy(struct hdmi *hdmi)
94 {
95 	struct platform_device *pdev = hdmi->pdev;
96 	struct platform_device *phy_pdev;
97 	struct device_node *phy_node;
98 
99 	phy_node = of_parse_phandle(pdev->dev.of_node, "phys", 0);
100 	if (!phy_node) {
101 		dev_err(&pdev->dev, "cannot find phy device\n");
102 		return -ENXIO;
103 	}
104 
105 	phy_pdev = of_find_device_by_node(phy_node);
106 	if (phy_pdev)
107 		hdmi->phy = platform_get_drvdata(phy_pdev);
108 
109 	of_node_put(phy_node);
110 
111 	if (!phy_pdev || !hdmi->phy) {
112 		dev_err(&pdev->dev, "phy driver is not ready\n");
113 		return -EPROBE_DEFER;
114 	}
115 
116 	hdmi->phy_dev = get_device(&phy_pdev->dev);
117 
118 	return 0;
119 }
120 
121 /* construct hdmi at bind/probe time, grab all the resources.  If
122  * we are to EPROBE_DEFER we want to do it here, rather than later
123  * at modeset_init() time
124  */
125 static struct hdmi *msm_hdmi_init(struct platform_device *pdev)
126 {
127 	struct hdmi_platform_config *config = pdev->dev.platform_data;
128 	struct hdmi *hdmi = NULL;
129 	struct resource *res;
130 	int i, ret;
131 
132 	hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
133 	if (!hdmi) {
134 		ret = -ENOMEM;
135 		goto fail;
136 	}
137 
138 	hdmi->pdev = pdev;
139 	hdmi->config = config;
140 	spin_lock_init(&hdmi->reg_lock);
141 
142 	hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
143 	if (IS_ERR(hdmi->mmio)) {
144 		ret = PTR_ERR(hdmi->mmio);
145 		goto fail;
146 	}
147 
148 	/* HDCP needs physical address of hdmi register */
149 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
150 		config->mmio_name);
151 	hdmi->mmio_phy_addr = res->start;
152 
153 	hdmi->qfprom_mmio = msm_ioremap(pdev,
154 		config->qfprom_mmio_name, "HDMI_QFPROM");
155 	if (IS_ERR(hdmi->qfprom_mmio)) {
156 		dev_info(&pdev->dev, "can't find qfprom resource\n");
157 		hdmi->qfprom_mmio = NULL;
158 	}
159 
160 	hdmi->hpd_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_regs[0]) *
161 			config->hpd_reg_cnt, GFP_KERNEL);
162 	if (!hdmi->hpd_regs) {
163 		ret = -ENOMEM;
164 		goto fail;
165 	}
166 	for (i = 0; i < config->hpd_reg_cnt; i++) {
167 		struct regulator *reg;
168 
169 		reg = devm_regulator_get(&pdev->dev,
170 				config->hpd_reg_names[i]);
171 		if (IS_ERR(reg)) {
172 			ret = PTR_ERR(reg);
173 			dev_err(&pdev->dev, "failed to get hpd regulator: %s (%d)\n",
174 					config->hpd_reg_names[i], ret);
175 			goto fail;
176 		}
177 
178 		hdmi->hpd_regs[i] = reg;
179 	}
180 
181 	hdmi->pwr_regs = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_regs[0]) *
182 			config->pwr_reg_cnt, GFP_KERNEL);
183 	if (!hdmi->pwr_regs) {
184 		ret = -ENOMEM;
185 		goto fail;
186 	}
187 	for (i = 0; i < config->pwr_reg_cnt; i++) {
188 		struct regulator *reg;
189 
190 		reg = devm_regulator_get(&pdev->dev,
191 				config->pwr_reg_names[i]);
192 		if (IS_ERR(reg)) {
193 			ret = PTR_ERR(reg);
194 			dev_err(&pdev->dev, "failed to get pwr regulator: %s (%d)\n",
195 					config->pwr_reg_names[i], ret);
196 			goto fail;
197 		}
198 
199 		hdmi->pwr_regs[i] = reg;
200 	}
201 
202 	hdmi->hpd_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->hpd_clks[0]) *
203 			config->hpd_clk_cnt, GFP_KERNEL);
204 	if (!hdmi->hpd_clks) {
205 		ret = -ENOMEM;
206 		goto fail;
207 	}
208 	for (i = 0; i < config->hpd_clk_cnt; i++) {
209 		struct clk *clk;
210 
211 		clk = msm_clk_get(pdev, config->hpd_clk_names[i]);
212 		if (IS_ERR(clk)) {
213 			ret = PTR_ERR(clk);
214 			dev_err(&pdev->dev, "failed to get hpd clk: %s (%d)\n",
215 					config->hpd_clk_names[i], ret);
216 			goto fail;
217 		}
218 
219 		hdmi->hpd_clks[i] = clk;
220 	}
221 
222 	hdmi->pwr_clks = devm_kzalloc(&pdev->dev, sizeof(hdmi->pwr_clks[0]) *
223 			config->pwr_clk_cnt, GFP_KERNEL);
224 	if (!hdmi->pwr_clks) {
225 		ret = -ENOMEM;
226 		goto fail;
227 	}
228 	for (i = 0; i < config->pwr_clk_cnt; i++) {
229 		struct clk *clk;
230 
231 		clk = msm_clk_get(pdev, config->pwr_clk_names[i]);
232 		if (IS_ERR(clk)) {
233 			ret = PTR_ERR(clk);
234 			dev_err(&pdev->dev, "failed to get pwr clk: %s (%d)\n",
235 					config->pwr_clk_names[i], ret);
236 			goto fail;
237 		}
238 
239 		hdmi->pwr_clks[i] = clk;
240 	}
241 
242 	pm_runtime_enable(&pdev->dev);
243 
244 	hdmi->workq = alloc_ordered_workqueue("msm_hdmi", 0);
245 
246 	hdmi->i2c = msm_hdmi_i2c_init(hdmi);
247 	if (IS_ERR(hdmi->i2c)) {
248 		ret = PTR_ERR(hdmi->i2c);
249 		dev_err(&pdev->dev, "failed to get i2c: %d\n", ret);
250 		hdmi->i2c = NULL;
251 		goto fail;
252 	}
253 
254 	ret = msm_hdmi_get_phy(hdmi);
255 	if (ret) {
256 		dev_err(&pdev->dev, "failed to get phy\n");
257 		goto fail;
258 	}
259 
260 	hdmi->hdcp_ctrl = msm_hdmi_hdcp_init(hdmi);
261 	if (IS_ERR(hdmi->hdcp_ctrl)) {
262 		dev_warn(&pdev->dev, "failed to init hdcp: disabled\n");
263 		hdmi->hdcp_ctrl = NULL;
264 	}
265 
266 	return hdmi;
267 
268 fail:
269 	if (hdmi)
270 		msm_hdmi_destroy(hdmi);
271 
272 	return ERR_PTR(ret);
273 }
274 
275 /* Second part of initialization, the drm/kms level modeset_init,
276  * constructs/initializes mode objects, etc, is called from master
277  * driver (not hdmi sub-device's probe/bind!)
278  *
279  * Any resource (regulator/clk/etc) which could be missing at boot
280  * should be handled in msm_hdmi_init() so that failure happens from
281  * hdmi sub-device's probe.
282  */
283 int msm_hdmi_modeset_init(struct hdmi *hdmi,
284 		struct drm_device *dev, struct drm_encoder *encoder)
285 {
286 	struct msm_drm_private *priv = dev->dev_private;
287 	struct platform_device *pdev = hdmi->pdev;
288 	int ret;
289 
290 	hdmi->dev = dev;
291 	hdmi->encoder = encoder;
292 
293 	hdmi_audio_infoframe_init(&hdmi->audio.infoframe);
294 
295 	hdmi->bridge = msm_hdmi_bridge_init(hdmi);
296 	if (IS_ERR(hdmi->bridge)) {
297 		ret = PTR_ERR(hdmi->bridge);
298 		dev_err(dev->dev, "failed to create HDMI bridge: %d\n", ret);
299 		hdmi->bridge = NULL;
300 		goto fail;
301 	}
302 
303 	hdmi->connector = msm_hdmi_connector_init(hdmi);
304 	if (IS_ERR(hdmi->connector)) {
305 		ret = PTR_ERR(hdmi->connector);
306 		dev_err(dev->dev, "failed to create HDMI connector: %d\n", ret);
307 		hdmi->connector = NULL;
308 		goto fail;
309 	}
310 
311 	hdmi->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
312 	if (hdmi->irq < 0) {
313 		ret = hdmi->irq;
314 		dev_err(dev->dev, "failed to get irq: %d\n", ret);
315 		goto fail;
316 	}
317 
318 	ret = devm_request_irq(&pdev->dev, hdmi->irq,
319 			msm_hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
320 			"hdmi_isr", hdmi);
321 	if (ret < 0) {
322 		dev_err(dev->dev, "failed to request IRQ%u: %d\n",
323 				hdmi->irq, ret);
324 		goto fail;
325 	}
326 
327 	encoder->bridge = hdmi->bridge;
328 
329 	priv->bridges[priv->num_bridges++]       = hdmi->bridge;
330 	priv->connectors[priv->num_connectors++] = hdmi->connector;
331 
332 	platform_set_drvdata(pdev, hdmi);
333 
334 	return 0;
335 
336 fail:
337 	/* bridge is normally destroyed by drm: */
338 	if (hdmi->bridge) {
339 		msm_hdmi_bridge_destroy(hdmi->bridge);
340 		hdmi->bridge = NULL;
341 	}
342 	if (hdmi->connector) {
343 		hdmi->connector->funcs->destroy(hdmi->connector);
344 		hdmi->connector = NULL;
345 	}
346 
347 	return ret;
348 }
349 
350 /*
351  * The hdmi device:
352  */
353 
354 #define HDMI_CFG(item, entry) \
355 	.item ## _names = item ##_names_ ## entry, \
356 	.item ## _cnt   = ARRAY_SIZE(item ## _names_ ## entry)
357 
358 static const char *pwr_reg_names_none[] = {};
359 static const char *hpd_reg_names_none[] = {};
360 
361 static struct hdmi_platform_config hdmi_tx_8660_config;
362 
363 static const char *hpd_reg_names_8960[] = {"core-vdda", "hdmi-mux"};
364 static const char *hpd_clk_names_8960[] = {"core", "master_iface", "slave_iface"};
365 
366 static struct hdmi_platform_config hdmi_tx_8960_config = {
367 		HDMI_CFG(hpd_reg, 8960),
368 		HDMI_CFG(hpd_clk, 8960),
369 };
370 
371 static const char *pwr_reg_names_8x74[] = {"core-vdda", "core-vcc"};
372 static const char *hpd_reg_names_8x74[] = {"hpd-gdsc", "hpd-5v"};
373 static const char *pwr_clk_names_8x74[] = {"extp", "alt_iface"};
374 static const char *hpd_clk_names_8x74[] = {"iface", "core", "mdp_core"};
375 static unsigned long hpd_clk_freq_8x74[] = {0, 19200000, 0};
376 
377 static struct hdmi_platform_config hdmi_tx_8974_config = {
378 		HDMI_CFG(pwr_reg, 8x74),
379 		HDMI_CFG(hpd_reg, 8x74),
380 		HDMI_CFG(pwr_clk, 8x74),
381 		HDMI_CFG(hpd_clk, 8x74),
382 		.hpd_freq      = hpd_clk_freq_8x74,
383 };
384 
385 static const char *hpd_reg_names_8084[] = {"hpd-gdsc", "hpd-5v", "hpd-5v-en"};
386 
387 static struct hdmi_platform_config hdmi_tx_8084_config = {
388 		HDMI_CFG(pwr_reg, 8x74),
389 		HDMI_CFG(hpd_reg, 8084),
390 		HDMI_CFG(pwr_clk, 8x74),
391 		HDMI_CFG(hpd_clk, 8x74),
392 		.hpd_freq      = hpd_clk_freq_8x74,
393 };
394 
395 static struct hdmi_platform_config hdmi_tx_8994_config = {
396 		HDMI_CFG(pwr_reg, 8x74),
397 		HDMI_CFG(hpd_reg, none),
398 		HDMI_CFG(pwr_clk, 8x74),
399 		HDMI_CFG(hpd_clk, 8x74),
400 		.hpd_freq      = hpd_clk_freq_8x74,
401 };
402 
403 static struct hdmi_platform_config hdmi_tx_8996_config = {
404 		HDMI_CFG(pwr_reg, none),
405 		HDMI_CFG(hpd_reg, none),
406 		HDMI_CFG(pwr_clk, 8x74),
407 		HDMI_CFG(hpd_clk, 8x74),
408 		.hpd_freq      = hpd_clk_freq_8x74,
409 };
410 
411 static const struct {
412 	const char *name;
413 	const bool output;
414 	const int value;
415 	const char *label;
416 } msm_hdmi_gpio_pdata[] = {
417 	{ "qcom,hdmi-tx-ddc-clk", true, 1, "HDMI_DDC_CLK" },
418 	{ "qcom,hdmi-tx-ddc-data", true, 1, "HDMI_DDC_DATA" },
419 	{ "qcom,hdmi-tx-hpd", false, 1, "HDMI_HPD" },
420 	{ "qcom,hdmi-tx-mux-en", true, 1, "HDMI_MUX_EN" },
421 	{ "qcom,hdmi-tx-mux-sel", true, 0, "HDMI_MUX_SEL" },
422 	{ "qcom,hdmi-tx-mux-lpm", true, 1, "HDMI_MUX_LPM" },
423 };
424 
425 static int msm_hdmi_get_gpio(struct device_node *of_node, const char *name)
426 {
427 	int gpio;
428 
429 	/* try with the gpio names as in the table (downstream bindings) */
430 	gpio = of_get_named_gpio(of_node, name, 0);
431 	if (gpio < 0) {
432 		char name2[32];
433 
434 		/* try with the gpio names as in the upstream bindings */
435 		snprintf(name2, sizeof(name2), "%s-gpios", name);
436 		gpio = of_get_named_gpio(of_node, name2, 0);
437 		if (gpio < 0) {
438 			char name3[32];
439 
440 			/*
441 			 * try again after stripping out the "qcom,hdmi-tx"
442 			 * prefix. This is mainly to match "hpd-gpios" used
443 			 * in the upstream bindings
444 			 */
445 			if (sscanf(name2, "qcom,hdmi-tx-%s", name3))
446 				gpio = of_get_named_gpio(of_node, name3, 0);
447 		}
448 
449 		if (gpio < 0) {
450 			DBG("failed to get gpio: %s (%d)", name, gpio);
451 			gpio = -1;
452 		}
453 	}
454 	return gpio;
455 }
456 
457 /*
458  * HDMI audio codec callbacks
459  */
460 static int msm_hdmi_audio_hw_params(struct device *dev, void *data,
461 				    struct hdmi_codec_daifmt *daifmt,
462 				    struct hdmi_codec_params *params)
463 {
464 	struct hdmi *hdmi = dev_get_drvdata(dev);
465 	unsigned int chan;
466 	unsigned int channel_allocation = 0;
467 	unsigned int rate;
468 	unsigned int level_shift  = 0; /* 0dB */
469 	bool down_mix = false;
470 
471 	dev_dbg(dev, "%u Hz, %d bit, %d channels\n", params->sample_rate,
472 		 params->sample_width, params->cea.channels);
473 
474 	switch (params->cea.channels) {
475 	case 2:
476 		/* FR and FL speakers */
477 		channel_allocation  = 0;
478 		chan = MSM_HDMI_AUDIO_CHANNEL_2;
479 		break;
480 	case 4:
481 		/* FC, LFE, FR and FL speakers */
482 		channel_allocation  = 0x3;
483 		chan = MSM_HDMI_AUDIO_CHANNEL_4;
484 		break;
485 	case 6:
486 		/* RR, RL, FC, LFE, FR and FL speakers */
487 		channel_allocation  = 0x0B;
488 		chan = MSM_HDMI_AUDIO_CHANNEL_6;
489 		break;
490 	case 8:
491 		/* FRC, FLC, RR, RL, FC, LFE, FR and FL speakers */
492 		channel_allocation  = 0x1F;
493 		chan = MSM_HDMI_AUDIO_CHANNEL_8;
494 		break;
495 	default:
496 		return -EINVAL;
497 	}
498 
499 	switch (params->sample_rate) {
500 	case 32000:
501 		rate = HDMI_SAMPLE_RATE_32KHZ;
502 		break;
503 	case 44100:
504 		rate = HDMI_SAMPLE_RATE_44_1KHZ;
505 		break;
506 	case 48000:
507 		rate = HDMI_SAMPLE_RATE_48KHZ;
508 		break;
509 	case 88200:
510 		rate = HDMI_SAMPLE_RATE_88_2KHZ;
511 		break;
512 	case 96000:
513 		rate = HDMI_SAMPLE_RATE_96KHZ;
514 		break;
515 	case 176400:
516 		rate = HDMI_SAMPLE_RATE_176_4KHZ;
517 		break;
518 	case 192000:
519 		rate = HDMI_SAMPLE_RATE_192KHZ;
520 		break;
521 	default:
522 		dev_err(dev, "rate[%d] not supported!\n",
523 			params->sample_rate);
524 		return -EINVAL;
525 	}
526 
527 	msm_hdmi_audio_set_sample_rate(hdmi, rate);
528 	msm_hdmi_audio_info_setup(hdmi, 1, chan, channel_allocation,
529 			      level_shift, down_mix);
530 
531 	return 0;
532 }
533 
534 static void msm_hdmi_audio_shutdown(struct device *dev, void *data)
535 {
536 	struct hdmi *hdmi = dev_get_drvdata(dev);
537 
538 	msm_hdmi_audio_info_setup(hdmi, 0, 0, 0, 0, 0);
539 }
540 
541 static const struct hdmi_codec_ops msm_hdmi_audio_codec_ops = {
542 	.hw_params = msm_hdmi_audio_hw_params,
543 	.audio_shutdown = msm_hdmi_audio_shutdown,
544 };
545 
546 static struct hdmi_codec_pdata codec_data = {
547 	.ops = &msm_hdmi_audio_codec_ops,
548 	.max_i2s_channels = 8,
549 	.i2s = 1,
550 };
551 
552 static int msm_hdmi_register_audio_driver(struct hdmi *hdmi, struct device *dev)
553 {
554 	hdmi->audio_pdev = platform_device_register_data(dev,
555 							 HDMI_CODEC_DRV_NAME,
556 							 PLATFORM_DEVID_AUTO,
557 							 &codec_data,
558 							 sizeof(codec_data));
559 	return PTR_ERR_OR_ZERO(hdmi->audio_pdev);
560 }
561 
562 static int msm_hdmi_bind(struct device *dev, struct device *master, void *data)
563 {
564 	struct drm_device *drm = dev_get_drvdata(master);
565 	struct msm_drm_private *priv = drm->dev_private;
566 	static struct hdmi_platform_config *hdmi_cfg;
567 	struct hdmi *hdmi;
568 	struct device_node *of_node = dev->of_node;
569 	int i, err;
570 
571 	hdmi_cfg = (struct hdmi_platform_config *)
572 			of_device_get_match_data(dev);
573 	if (!hdmi_cfg) {
574 		dev_err(dev, "unknown hdmi_cfg: %s\n", of_node->name);
575 		return -ENXIO;
576 	}
577 
578 	hdmi_cfg->mmio_name     = "core_physical";
579 	hdmi_cfg->qfprom_mmio_name = "qfprom_physical";
580 
581 	for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) {
582 		hdmi_cfg->gpios[i].num = msm_hdmi_get_gpio(of_node,
583 						msm_hdmi_gpio_pdata[i].name);
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 		hdmi_cfg->gpios[i].label = msm_hdmi_gpio_pdata[i].label;
587 	}
588 
589 	dev->platform_data = hdmi_cfg;
590 
591 	hdmi = msm_hdmi_init(to_platform_device(dev));
592 	if (IS_ERR(hdmi))
593 		return PTR_ERR(hdmi);
594 	priv->hdmi = hdmi;
595 
596 	err = msm_hdmi_register_audio_driver(hdmi, dev);
597 	if (err) {
598 		DRM_ERROR("Failed to attach an audio codec %d\n", err);
599 		hdmi->audio_pdev = NULL;
600 	}
601 
602 	return 0;
603 }
604 
605 static void msm_hdmi_unbind(struct device *dev, struct device *master,
606 		void *data)
607 {
608 	struct drm_device *drm = dev_get_drvdata(master);
609 	struct msm_drm_private *priv = drm->dev_private;
610 	if (priv->hdmi) {
611 		if (priv->hdmi->audio_pdev)
612 			platform_device_unregister(priv->hdmi->audio_pdev);
613 
614 		msm_hdmi_destroy(priv->hdmi);
615 		priv->hdmi = NULL;
616 	}
617 }
618 
619 static const struct component_ops msm_hdmi_ops = {
620 		.bind   = msm_hdmi_bind,
621 		.unbind = msm_hdmi_unbind,
622 };
623 
624 static int msm_hdmi_dev_probe(struct platform_device *pdev)
625 {
626 	return component_add(&pdev->dev, &msm_hdmi_ops);
627 }
628 
629 static int msm_hdmi_dev_remove(struct platform_device *pdev)
630 {
631 	component_del(&pdev->dev, &msm_hdmi_ops);
632 	return 0;
633 }
634 
635 static const struct of_device_id msm_hdmi_dt_match[] = {
636 	{ .compatible = "qcom,hdmi-tx-8996", .data = &hdmi_tx_8996_config },
637 	{ .compatible = "qcom,hdmi-tx-8994", .data = &hdmi_tx_8994_config },
638 	{ .compatible = "qcom,hdmi-tx-8084", .data = &hdmi_tx_8084_config },
639 	{ .compatible = "qcom,hdmi-tx-8974", .data = &hdmi_tx_8974_config },
640 	{ .compatible = "qcom,hdmi-tx-8960", .data = &hdmi_tx_8960_config },
641 	{ .compatible = "qcom,hdmi-tx-8660", .data = &hdmi_tx_8660_config },
642 	{}
643 };
644 
645 static struct platform_driver msm_hdmi_driver = {
646 	.probe = msm_hdmi_dev_probe,
647 	.remove = msm_hdmi_dev_remove,
648 	.driver = {
649 		.name = "hdmi_msm",
650 		.of_match_table = msm_hdmi_dt_match,
651 	},
652 };
653 
654 void __init msm_hdmi_register(void)
655 {
656 	msm_hdmi_phy_driver_register();
657 	platform_driver_register(&msm_hdmi_driver);
658 }
659 
660 void __exit msm_hdmi_unregister(void)
661 {
662 	platform_driver_unregister(&msm_hdmi_driver);
663 	msm_hdmi_phy_driver_unregister();
664 }
665