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11#include <linux/clk.h>
12#include <linux/component.h>
13#include <linux/delay.h>
14#include <linux/err.h>
15#include <linux/hdmi.h>
16#include <linux/irq.h>
17#include <linux/mfd/syscon.h>
18#include <linux/module.h>
19#include <linux/mutex.h>
20#include <linux/of_device.h>
21
22#include <drm/drm_atomic_helper.h>
23#include <drm/drm_edid.h>
24#include <drm/drm_of.h>
25#include <drm/drm_probe_helper.h>
26#include <drm/drmP.h>
27
28#include <sound/hdmi-codec.h>
29
30#include "zx_hdmi_regs.h"
31#include "zx_vou.h"
32
33#define ZX_HDMI_INFOFRAME_SIZE 31
34#define DDC_SEGMENT_ADDR 0x30
35
36struct zx_hdmi_i2c {
37 struct i2c_adapter adap;
38 struct mutex lock;
39};
40
41struct zx_hdmi {
42 struct drm_connector connector;
43 struct drm_encoder encoder;
44 struct zx_hdmi_i2c *ddc;
45 struct device *dev;
46 struct drm_device *drm;
47 void __iomem *mmio;
48 struct clk *cec_clk;
49 struct clk *osc_clk;
50 struct clk *xclk;
51 bool sink_is_hdmi;
52 bool sink_has_audio;
53 struct platform_device *audio_pdev;
54};
55
56#define to_zx_hdmi(x) container_of(x, struct zx_hdmi, x)
57
58static inline u8 hdmi_readb(struct zx_hdmi *hdmi, u16 offset)
59{
60 return readl_relaxed(hdmi->mmio + offset * 4);
61}
62
63static inline void hdmi_writeb(struct zx_hdmi *hdmi, u16 offset, u8 val)
64{
65 writel_relaxed(val, hdmi->mmio + offset * 4);
66}
67
68static inline void hdmi_writeb_mask(struct zx_hdmi *hdmi, u16 offset,
69 u8 mask, u8 val)
70{
71 u8 tmp;
72
73 tmp = hdmi_readb(hdmi, offset);
74 tmp = (tmp & ~mask) | (val & mask);
75 hdmi_writeb(hdmi, offset, tmp);
76}
77
78static int zx_hdmi_infoframe_trans(struct zx_hdmi *hdmi,
79 union hdmi_infoframe *frame, u8 fsel)
80{
81 u8 buffer[ZX_HDMI_INFOFRAME_SIZE];
82 int num;
83 int i;
84
85 hdmi_writeb(hdmi, TPI_INFO_FSEL, fsel);
86
87 num = hdmi_infoframe_pack(frame, buffer, ZX_HDMI_INFOFRAME_SIZE);
88 if (num < 0) {
89 DRM_DEV_ERROR(hdmi->dev, "failed to pack infoframe: %d\n", num);
90 return num;
91 }
92
93 for (i = 0; i < num; i++)
94 hdmi_writeb(hdmi, TPI_INFO_B0 + i, buffer[i]);
95
96 hdmi_writeb_mask(hdmi, TPI_INFO_EN, TPI_INFO_TRANS_RPT,
97 TPI_INFO_TRANS_RPT);
98 hdmi_writeb_mask(hdmi, TPI_INFO_EN, TPI_INFO_TRANS_EN,
99 TPI_INFO_TRANS_EN);
100
101 return num;
102}
103
104static int zx_hdmi_config_video_vsi(struct zx_hdmi *hdmi,
105 struct drm_display_mode *mode)
106{
107 union hdmi_infoframe frame;
108 int ret;
109
110 ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
111 &hdmi->connector,
112 mode);
113 if (ret) {
114 DRM_DEV_ERROR(hdmi->dev, "failed to get vendor infoframe: %d\n",
115 ret);
116 return ret;
117 }
118
119 return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_VSIF);
120}
121
122static int zx_hdmi_config_video_avi(struct zx_hdmi *hdmi,
123 struct drm_display_mode *mode)
124{
125 union hdmi_infoframe frame;
126 int ret;
127
128 ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
129 &hdmi->connector,
130 mode);
131 if (ret) {
132 DRM_DEV_ERROR(hdmi->dev, "failed to get avi infoframe: %d\n",
133 ret);
134 return ret;
135 }
136
137
138 frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
139
140 return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_AVI);
141}
142
143static void zx_hdmi_encoder_mode_set(struct drm_encoder *encoder,
144 struct drm_display_mode *mode,
145 struct drm_display_mode *adj_mode)
146{
147 struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
148
149 if (hdmi->sink_is_hdmi) {
150 zx_hdmi_config_video_avi(hdmi, mode);
151 zx_hdmi_config_video_vsi(hdmi, mode);
152 }
153}
154
155static void zx_hdmi_phy_start(struct zx_hdmi *hdmi)
156{
157
158 hdmi_writeb(hdmi, 0x222, 0x0);
159 hdmi_writeb(hdmi, 0x224, 0x4);
160 hdmi_writeb(hdmi, 0x909, 0x0);
161 hdmi_writeb(hdmi, 0x7b0, 0x90);
162 hdmi_writeb(hdmi, 0x7b1, 0x00);
163 hdmi_writeb(hdmi, 0x7b2, 0xa7);
164 hdmi_writeb(hdmi, 0x7b8, 0xaa);
165 hdmi_writeb(hdmi, 0x7b2, 0xa7);
166 hdmi_writeb(hdmi, 0x7b3, 0x0f);
167 hdmi_writeb(hdmi, 0x7b4, 0x0f);
168 hdmi_writeb(hdmi, 0x7b5, 0x55);
169 hdmi_writeb(hdmi, 0x7b7, 0x03);
170 hdmi_writeb(hdmi, 0x7b9, 0x12);
171 hdmi_writeb(hdmi, 0x7ba, 0x32);
172 hdmi_writeb(hdmi, 0x7bc, 0x68);
173 hdmi_writeb(hdmi, 0x7be, 0x40);
174 hdmi_writeb(hdmi, 0x7bf, 0x84);
175 hdmi_writeb(hdmi, 0x7c1, 0x0f);
176 hdmi_writeb(hdmi, 0x7c8, 0x02);
177 hdmi_writeb(hdmi, 0x7c9, 0x03);
178 hdmi_writeb(hdmi, 0x7ca, 0x40);
179 hdmi_writeb(hdmi, 0x7dc, 0x31);
180 hdmi_writeb(hdmi, 0x7e2, 0x04);
181 hdmi_writeb(hdmi, 0x7e0, 0x06);
182 hdmi_writeb(hdmi, 0x7cb, 0x68);
183 hdmi_writeb(hdmi, 0x7f9, 0x02);
184 hdmi_writeb(hdmi, 0x7b6, 0x02);
185 hdmi_writeb(hdmi, 0x7f3, 0x0);
186}
187
188static void zx_hdmi_hw_enable(struct zx_hdmi *hdmi)
189{
190
191 hdmi_writeb_mask(hdmi, CLKPWD, CLKPWD_PDIDCK, CLKPWD_PDIDCK);
192
193
194 hdmi_writeb_mask(hdmi, FUNC_SEL, FUNC_HDMI_EN, FUNC_HDMI_EN);
195
196
197 hdmi_writeb_mask(hdmi, P2T_CTRL, P2T_DC_PKT_EN, P2T_DC_PKT_EN);
198
199
200 hdmi_writeb_mask(hdmi, TEST_TXCTRL, TEST_TXCTRL_HDMI_MODE,
201 TEST_TXCTRL_HDMI_MODE);
202
203
204 hdmi_writeb(hdmi, HDMICTL4, 0x3);
205
206
207 hdmi_writeb_mask(hdmi, INTR1_MASK, INTR1_MONITOR_DETECT,
208 INTR1_MONITOR_DETECT);
209
210
211 zx_hdmi_phy_start(hdmi);
212}
213
214static void zx_hdmi_hw_disable(struct zx_hdmi *hdmi)
215{
216
217 hdmi_writeb_mask(hdmi, INTR1_MASK, INTR1_MONITOR_DETECT, 0);
218
219
220 hdmi_writeb_mask(hdmi, P2T_CTRL, P2T_DC_PKT_EN, P2T_DC_PKT_EN);
221
222
223 hdmi_writeb_mask(hdmi, FUNC_SEL, FUNC_HDMI_EN, 0);
224
225
226 hdmi_writeb_mask(hdmi, CLKPWD, CLKPWD_PDIDCK, 0);
227}
228
229static void zx_hdmi_encoder_enable(struct drm_encoder *encoder)
230{
231 struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
232
233 clk_prepare_enable(hdmi->cec_clk);
234 clk_prepare_enable(hdmi->osc_clk);
235 clk_prepare_enable(hdmi->xclk);
236
237 zx_hdmi_hw_enable(hdmi);
238
239 vou_inf_enable(VOU_HDMI, encoder->crtc);
240}
241
242static void zx_hdmi_encoder_disable(struct drm_encoder *encoder)
243{
244 struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
245
246 vou_inf_disable(VOU_HDMI, encoder->crtc);
247
248 zx_hdmi_hw_disable(hdmi);
249
250 clk_disable_unprepare(hdmi->xclk);
251 clk_disable_unprepare(hdmi->osc_clk);
252 clk_disable_unprepare(hdmi->cec_clk);
253}
254
255static const struct drm_encoder_helper_funcs zx_hdmi_encoder_helper_funcs = {
256 .enable = zx_hdmi_encoder_enable,
257 .disable = zx_hdmi_encoder_disable,
258 .mode_set = zx_hdmi_encoder_mode_set,
259};
260
261static const struct drm_encoder_funcs zx_hdmi_encoder_funcs = {
262 .destroy = drm_encoder_cleanup,
263};
264
265static int zx_hdmi_connector_get_modes(struct drm_connector *connector)
266{
267 struct zx_hdmi *hdmi = to_zx_hdmi(connector);
268 struct edid *edid;
269 int ret;
270
271 edid = drm_get_edid(connector, &hdmi->ddc->adap);
272 if (!edid)
273 return 0;
274
275 hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
276 hdmi->sink_has_audio = drm_detect_monitor_audio(edid);
277 drm_connector_update_edid_property(connector, edid);
278 ret = drm_add_edid_modes(connector, edid);
279 kfree(edid);
280
281 return ret;
282}
283
284static enum drm_mode_status
285zx_hdmi_connector_mode_valid(struct drm_connector *connector,
286 struct drm_display_mode *mode)
287{
288 return MODE_OK;
289}
290
291static struct drm_connector_helper_funcs zx_hdmi_connector_helper_funcs = {
292 .get_modes = zx_hdmi_connector_get_modes,
293 .mode_valid = zx_hdmi_connector_mode_valid,
294};
295
296static enum drm_connector_status
297zx_hdmi_connector_detect(struct drm_connector *connector, bool force)
298{
299 struct zx_hdmi *hdmi = to_zx_hdmi(connector);
300
301 return (hdmi_readb(hdmi, TPI_HPD_RSEN) & TPI_HPD_CONNECTION) ?
302 connector_status_connected : connector_status_disconnected;
303}
304
305static const struct drm_connector_funcs zx_hdmi_connector_funcs = {
306 .fill_modes = drm_helper_probe_single_connector_modes,
307 .detect = zx_hdmi_connector_detect,
308 .destroy = drm_connector_cleanup,
309 .reset = drm_atomic_helper_connector_reset,
310 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
311 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
312};
313
314static int zx_hdmi_register(struct drm_device *drm, struct zx_hdmi *hdmi)
315{
316 struct drm_encoder *encoder = &hdmi->encoder;
317
318 encoder->possible_crtcs = VOU_CRTC_MASK;
319
320 drm_encoder_init(drm, encoder, &zx_hdmi_encoder_funcs,
321 DRM_MODE_ENCODER_TMDS, NULL);
322 drm_encoder_helper_add(encoder, &zx_hdmi_encoder_helper_funcs);
323
324 hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
325
326 drm_connector_init(drm, &hdmi->connector, &zx_hdmi_connector_funcs,
327 DRM_MODE_CONNECTOR_HDMIA);
328 drm_connector_helper_add(&hdmi->connector,
329 &zx_hdmi_connector_helper_funcs);
330
331 drm_connector_attach_encoder(&hdmi->connector, encoder);
332
333 return 0;
334}
335
336static irqreturn_t zx_hdmi_irq_thread(int irq, void *dev_id)
337{
338 struct zx_hdmi *hdmi = dev_id;
339
340 drm_helper_hpd_irq_event(hdmi->connector.dev);
341
342 return IRQ_HANDLED;
343}
344
345static irqreturn_t zx_hdmi_irq_handler(int irq, void *dev_id)
346{
347 struct zx_hdmi *hdmi = dev_id;
348 u8 lstat;
349
350 lstat = hdmi_readb(hdmi, L1_INTR_STAT);
351
352
353 if (lstat & L1_INTR_STAT_INTR1) {
354 u8 stat;
355
356 stat = hdmi_readb(hdmi, INTR1_STAT);
357 hdmi_writeb(hdmi, INTR1_STAT, stat);
358
359 if (stat & INTR1_MONITOR_DETECT)
360 return IRQ_WAKE_THREAD;
361 }
362
363 return IRQ_NONE;
364}
365
366static int zx_hdmi_audio_startup(struct device *dev, void *data)
367{
368 struct zx_hdmi *hdmi = dev_get_drvdata(dev);
369 struct drm_encoder *encoder = &hdmi->encoder;
370
371 vou_inf_hdmi_audio_sel(encoder->crtc, VOU_HDMI_AUD_SPDIF);
372
373 return 0;
374}
375
376static void zx_hdmi_audio_shutdown(struct device *dev, void *data)
377{
378 struct zx_hdmi *hdmi = dev_get_drvdata(dev);
379
380
381 hdmi_writeb_mask(hdmi, AUD_EN, AUD_IN_EN, 0);
382}
383
384static inline int zx_hdmi_audio_get_n(unsigned int fs)
385{
386 unsigned int n;
387
388 if (fs && (fs % 44100) == 0)
389 n = 6272 * (fs / 44100);
390 else
391 n = fs * 128 / 1000;
392
393 return n;
394}
395
396static int zx_hdmi_audio_hw_params(struct device *dev,
397 void *data,
398 struct hdmi_codec_daifmt *daifmt,
399 struct hdmi_codec_params *params)
400{
401 struct zx_hdmi *hdmi = dev_get_drvdata(dev);
402 struct hdmi_audio_infoframe *cea = ¶ms->cea;
403 union hdmi_infoframe frame;
404 int n;
405
406
407 if (daifmt->fmt != HDMI_SPDIF) {
408 DRM_DEV_ERROR(hdmi->dev, "invalid daifmt %d\n", daifmt->fmt);
409 return -EINVAL;
410 }
411
412 switch (params->sample_width) {
413 case 16:
414 hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, SPDIF_SAMPLE_SIZE_MASK,
415 SPDIF_SAMPLE_SIZE_16BIT);
416 break;
417 case 20:
418 hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, SPDIF_SAMPLE_SIZE_MASK,
419 SPDIF_SAMPLE_SIZE_20BIT);
420 break;
421 case 24:
422 hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, SPDIF_SAMPLE_SIZE_MASK,
423 SPDIF_SAMPLE_SIZE_24BIT);
424 break;
425 default:
426 DRM_DEV_ERROR(hdmi->dev, "invalid sample width %d\n",
427 params->sample_width);
428 return -EINVAL;
429 }
430
431
432 n = zx_hdmi_audio_get_n(params->sample_rate);
433 hdmi_writeb(hdmi, N_SVAL1, n & 0xff);
434 hdmi_writeb(hdmi, N_SVAL2, (n >> 8) & 0xff);
435 hdmi_writeb(hdmi, N_SVAL3, (n >> 16) & 0xf);
436
437
438 hdmi_writeb_mask(hdmi, AUD_MODE, SPDIF_EN, SPDIF_EN);
439
440
441 hdmi_writeb_mask(hdmi, AUD_EN, AUD_IN_EN, AUD_IN_EN);
442
443 memcpy(&frame.audio, cea, sizeof(*cea));
444
445 return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_AUDIO);
446}
447
448static int zx_hdmi_audio_digital_mute(struct device *dev, void *data,
449 bool enable)
450{
451 struct zx_hdmi *hdmi = dev_get_drvdata(dev);
452
453 if (enable)
454 hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, TPI_AUD_MUTE,
455 TPI_AUD_MUTE);
456 else
457 hdmi_writeb_mask(hdmi, TPI_AUD_CONFIG, TPI_AUD_MUTE, 0);
458
459 return 0;
460}
461
462static int zx_hdmi_audio_get_eld(struct device *dev, void *data,
463 uint8_t *buf, size_t len)
464{
465 struct zx_hdmi *hdmi = dev_get_drvdata(dev);
466 struct drm_connector *connector = &hdmi->connector;
467
468 memcpy(buf, connector->eld, min(sizeof(connector->eld), len));
469
470 return 0;
471}
472
473static const struct hdmi_codec_ops zx_hdmi_codec_ops = {
474 .audio_startup = zx_hdmi_audio_startup,
475 .hw_params = zx_hdmi_audio_hw_params,
476 .audio_shutdown = zx_hdmi_audio_shutdown,
477 .digital_mute = zx_hdmi_audio_digital_mute,
478 .get_eld = zx_hdmi_audio_get_eld,
479};
480
481static struct hdmi_codec_pdata zx_hdmi_codec_pdata = {
482 .ops = &zx_hdmi_codec_ops,
483 .spdif = 1,
484};
485
486static int zx_hdmi_audio_register(struct zx_hdmi *hdmi)
487{
488 struct platform_device *pdev;
489
490 pdev = platform_device_register_data(hdmi->dev, HDMI_CODEC_DRV_NAME,
491 PLATFORM_DEVID_AUTO,
492 &zx_hdmi_codec_pdata,
493 sizeof(zx_hdmi_codec_pdata));
494 if (IS_ERR(pdev))
495 return PTR_ERR(pdev);
496
497 hdmi->audio_pdev = pdev;
498
499 return 0;
500}
501
502static int zx_hdmi_i2c_read(struct zx_hdmi *hdmi, struct i2c_msg *msg)
503{
504 int len = msg->len;
505 u8 *buf = msg->buf;
506 int retry = 0;
507 int ret = 0;
508
509
510 hdmi_writeb(hdmi, ZX_DDC_DIN_CNT2, (len >> 8) & 0xff);
511
512 hdmi_writeb(hdmi, ZX_DDC_DIN_CNT1, len & 0xff);
513
514
515 hdmi_writeb_mask(hdmi, ZX_DDC_CMD, DDC_CMD_MASK, DDC_CMD_CLEAR_FIFO);
516
517
518 hdmi_writeb_mask(hdmi, ZX_DDC_CMD, DDC_CMD_MASK,
519 DDC_CMD_SEQUENTIAL_READ);
520
521 while (len > 0) {
522 int cnt, i;
523
524
525 usleep_range(500, 1000);
526
527 cnt = hdmi_readb(hdmi, ZX_DDC_DOUT_CNT) & DDC_DOUT_CNT_MASK;
528 if (cnt == 0) {
529 if (++retry > 5) {
530 DRM_DEV_ERROR(hdmi->dev,
531 "DDC FIFO read timed out!");
532 return -ETIMEDOUT;
533 }
534 continue;
535 }
536
537 for (i = 0; i < cnt; i++)
538 *buf++ = hdmi_readb(hdmi, ZX_DDC_DATA);
539 len -= cnt;
540 }
541
542 return ret;
543}
544
545static int zx_hdmi_i2c_write(struct zx_hdmi *hdmi, struct i2c_msg *msg)
546{
547
548
549
550
551 if ((msg->len != 1) ||
552 ((msg->addr != DDC_ADDR) && (msg->addr != DDC_SEGMENT_ADDR)))
553 return -EINVAL;
554
555 if (msg->addr == DDC_SEGMENT_ADDR)
556 hdmi_writeb(hdmi, ZX_DDC_SEGM, msg->addr << 1);
557 else if (msg->addr == DDC_ADDR)
558 hdmi_writeb(hdmi, ZX_DDC_ADDR, msg->addr << 1);
559
560 hdmi_writeb(hdmi, ZX_DDC_OFFSET, msg->buf[0]);
561
562 return 0;
563}
564
565static int zx_hdmi_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
566 int num)
567{
568 struct zx_hdmi *hdmi = i2c_get_adapdata(adap);
569 struct zx_hdmi_i2c *ddc = hdmi->ddc;
570 int i, ret = 0;
571
572 mutex_lock(&ddc->lock);
573
574
575 hdmi_writeb_mask(hdmi, TPI_DDC_MASTER_EN, HW_DDC_MASTER, HW_DDC_MASTER);
576
577 for (i = 0; i < num; i++) {
578 DRM_DEV_DEBUG(hdmi->dev,
579 "xfer: num: %d/%d, len: %d, flags: %#x\n",
580 i + 1, num, msgs[i].len, msgs[i].flags);
581
582 if (msgs[i].flags & I2C_M_RD)
583 ret = zx_hdmi_i2c_read(hdmi, &msgs[i]);
584 else
585 ret = zx_hdmi_i2c_write(hdmi, &msgs[i]);
586
587 if (ret < 0)
588 break;
589 }
590
591 if (!ret)
592 ret = num;
593
594
595 hdmi_writeb_mask(hdmi, TPI_DDC_MASTER_EN, HW_DDC_MASTER, 0);
596
597 mutex_unlock(&ddc->lock);
598
599 return ret;
600}
601
602static u32 zx_hdmi_i2c_func(struct i2c_adapter *adapter)
603{
604 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
605}
606
607static const struct i2c_algorithm zx_hdmi_algorithm = {
608 .master_xfer = zx_hdmi_i2c_xfer,
609 .functionality = zx_hdmi_i2c_func,
610};
611
612static int zx_hdmi_ddc_register(struct zx_hdmi *hdmi)
613{
614 struct i2c_adapter *adap;
615 struct zx_hdmi_i2c *ddc;
616 int ret;
617
618 ddc = devm_kzalloc(hdmi->dev, sizeof(*ddc), GFP_KERNEL);
619 if (!ddc)
620 return -ENOMEM;
621
622 hdmi->ddc = ddc;
623 mutex_init(&ddc->lock);
624
625 adap = &ddc->adap;
626 adap->owner = THIS_MODULE;
627 adap->class = I2C_CLASS_DDC;
628 adap->dev.parent = hdmi->dev;
629 adap->algo = &zx_hdmi_algorithm;
630 snprintf(adap->name, sizeof(adap->name), "zx hdmi i2c");
631
632 ret = i2c_add_adapter(adap);
633 if (ret) {
634 DRM_DEV_ERROR(hdmi->dev, "failed to add I2C adapter: %d\n",
635 ret);
636 return ret;
637 }
638
639 i2c_set_adapdata(adap, hdmi);
640
641 return 0;
642}
643
644static int zx_hdmi_bind(struct device *dev, struct device *master, void *data)
645{
646 struct platform_device *pdev = to_platform_device(dev);
647 struct drm_device *drm = data;
648 struct resource *res;
649 struct zx_hdmi *hdmi;
650 int irq;
651 int ret;
652
653 hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
654 if (!hdmi)
655 return -ENOMEM;
656
657 hdmi->dev = dev;
658 hdmi->drm = drm;
659
660 dev_set_drvdata(dev, hdmi);
661
662 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
663 hdmi->mmio = devm_ioremap_resource(dev, res);
664 if (IS_ERR(hdmi->mmio)) {
665 ret = PTR_ERR(hdmi->mmio);
666 DRM_DEV_ERROR(dev, "failed to remap hdmi region: %d\n", ret);
667 return ret;
668 }
669
670 irq = platform_get_irq(pdev, 0);
671 if (irq < 0)
672 return irq;
673
674 hdmi->cec_clk = devm_clk_get(hdmi->dev, "osc_cec");
675 if (IS_ERR(hdmi->cec_clk)) {
676 ret = PTR_ERR(hdmi->cec_clk);
677 DRM_DEV_ERROR(dev, "failed to get cec_clk: %d\n", ret);
678 return ret;
679 }
680
681 hdmi->osc_clk = devm_clk_get(hdmi->dev, "osc_clk");
682 if (IS_ERR(hdmi->osc_clk)) {
683 ret = PTR_ERR(hdmi->osc_clk);
684 DRM_DEV_ERROR(dev, "failed to get osc_clk: %d\n", ret);
685 return ret;
686 }
687
688 hdmi->xclk = devm_clk_get(hdmi->dev, "xclk");
689 if (IS_ERR(hdmi->xclk)) {
690 ret = PTR_ERR(hdmi->xclk);
691 DRM_DEV_ERROR(dev, "failed to get xclk: %d\n", ret);
692 return ret;
693 }
694
695 ret = zx_hdmi_ddc_register(hdmi);
696 if (ret) {
697 DRM_DEV_ERROR(dev, "failed to register ddc: %d\n", ret);
698 return ret;
699 }
700
701 ret = zx_hdmi_audio_register(hdmi);
702 if (ret) {
703 DRM_DEV_ERROR(dev, "failed to register audio: %d\n", ret);
704 return ret;
705 }
706
707 ret = zx_hdmi_register(drm, hdmi);
708 if (ret) {
709 DRM_DEV_ERROR(dev, "failed to register hdmi: %d\n", ret);
710 return ret;
711 }
712
713 ret = devm_request_threaded_irq(dev, irq, zx_hdmi_irq_handler,
714 zx_hdmi_irq_thread, IRQF_SHARED,
715 dev_name(dev), hdmi);
716 if (ret) {
717 DRM_DEV_ERROR(dev, "failed to request threaded irq: %d\n", ret);
718 return ret;
719 }
720
721 return 0;
722}
723
724static void zx_hdmi_unbind(struct device *dev, struct device *master,
725 void *data)
726{
727 struct zx_hdmi *hdmi = dev_get_drvdata(dev);
728
729 hdmi->connector.funcs->destroy(&hdmi->connector);
730 hdmi->encoder.funcs->destroy(&hdmi->encoder);
731
732 if (hdmi->audio_pdev)
733 platform_device_unregister(hdmi->audio_pdev);
734}
735
736static const struct component_ops zx_hdmi_component_ops = {
737 .bind = zx_hdmi_bind,
738 .unbind = zx_hdmi_unbind,
739};
740
741static int zx_hdmi_probe(struct platform_device *pdev)
742{
743 return component_add(&pdev->dev, &zx_hdmi_component_ops);
744}
745
746static int zx_hdmi_remove(struct platform_device *pdev)
747{
748 component_del(&pdev->dev, &zx_hdmi_component_ops);
749 return 0;
750}
751
752static const struct of_device_id zx_hdmi_of_match[] = {
753 { .compatible = "zte,zx296718-hdmi", },
754 { },
755};
756MODULE_DEVICE_TABLE(of, zx_hdmi_of_match);
757
758struct platform_driver zx_hdmi_driver = {
759 .probe = zx_hdmi_probe,
760 .remove = zx_hdmi_remove,
761 .driver = {
762 .name = "zx-hdmi",
763 .of_match_table = zx_hdmi_of_match,
764 },
765};
766
