?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / gpu / drm / bridge / synopsys / dw-hdmi.c
bloba38db40ce990de2c572fd0b0c2aca42d8273611c
1 /*
2 * DesignWare High-Definition Multimedia Interface (HDMI) driver
3 *
4 * Copyright (C) 2013-2015 Mentor Graphics Inc.
5 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
6 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 */
14 #include <linux/module.h>
15 #include <linux/irq.h>
16 #include <linux/delay.h>
17 #include <linux/err.h>
18 #include <linux/clk.h>
19 #include <linux/hdmi.h>
20 #include <linux/mutex.h>
21 #include <linux/of_device.h>
22 #include <linux/regmap.h>
23 #include <linux/spinlock.h>
24
25 #include <drm/drm_of.h>
26 #include <drm/drmP.h>
27 #include <drm/drm_atomic_helper.h>
28 #include <drm/drm_crtc_helper.h>
29 #include <drm/drm_edid.h>
30 #include <drm/drm_encoder_slave.h>
31 #include <drm/bridge/dw_hdmi.h>
32
33 #include <uapi/linux/media-bus-format.h>
34 #include <uapi/linux/videodev2.h>
35
36 #include "dw-hdmi.h"
37 #include "dw-hdmi-audio.h"
38 #include "dw-hdmi-cec.h"
39
40 #include <media/cec-notifier.h>
41
42 #define DDC_SEGMENT_ADDR 0x30
43
44 #define HDMI_EDID_LEN 512
45
46 enum hdmi_datamap {
47 RGB444_8B = 0x01,
48 RGB444_10B = 0x03,
49 RGB444_12B = 0x05,
50 RGB444_16B = 0x07,
51 YCbCr444_8B = 0x09,
52 YCbCr444_10B = 0x0B,
53 YCbCr444_12B = 0x0D,
54 YCbCr444_16B = 0x0F,
55 YCbCr422_8B = 0x16,
56 YCbCr422_10B = 0x14,
57 YCbCr422_12B = 0x12,
58 };
59
60 static const u16 csc_coeff_default[3][4] = {
61 { 0x2000, 0x0000, 0x0000, 0x0000 },
62 { 0x0000, 0x2000, 0x0000, 0x0000 },
63 { 0x0000, 0x0000, 0x2000, 0x0000 }
64 };
65
66 static const u16 csc_coeff_rgb_out_eitu601[3][4] = {
67 { 0x2000, 0x6926, 0x74fd, 0x010e },
68 { 0x2000, 0x2cdd, 0x0000, 0x7e9a },
69 { 0x2000, 0x0000, 0x38b4, 0x7e3b }
70 };
71
72 static const u16 csc_coeff_rgb_out_eitu709[3][4] = {
73 { 0x2000, 0x7106, 0x7a02, 0x00a7 },
74 { 0x2000, 0x3264, 0x0000, 0x7e6d },
75 { 0x2000, 0x0000, 0x3b61, 0x7e25 }
76 };
77
78 static const u16 csc_coeff_rgb_in_eitu601[3][4] = {
79 { 0x2591, 0x1322, 0x074b, 0x0000 },
80 { 0x6535, 0x2000, 0x7acc, 0x0200 },
81 { 0x6acd, 0x7534, 0x2000, 0x0200 }
82 };
83
84 static const u16 csc_coeff_rgb_in_eitu709[3][4] = {
85 { 0x2dc5, 0x0d9b, 0x049e, 0x0000 },
86 { 0x62f0, 0x2000, 0x7d11, 0x0200 },
87 { 0x6756, 0x78ab, 0x2000, 0x0200 }
88 };
89
90 struct hdmi_vmode {
91 bool mdataenablepolarity;
92
93 unsigned int mpixelclock;
94 unsigned int mpixelrepetitioninput;
95 unsigned int mpixelrepetitionoutput;
96 };
97
98 struct hdmi_data_info {
99 unsigned int enc_in_bus_format;
100 unsigned int enc_out_bus_format;
101 unsigned int enc_in_encoding;
102 unsigned int enc_out_encoding;
103 unsigned int pix_repet_factor;
104 unsigned int hdcp_enable;
105 struct hdmi_vmode video_mode;
106 };
107
108 struct dw_hdmi_i2c {
109 struct i2c_adapter adap;
110
111 struct mutex lock; /* used to serialize data transfers */
112 struct completion cmp;
113 u8 stat;
114
115 u8 slave_reg;
116 bool is_regaddr;
117 bool is_segment;
118 };
119
120 struct dw_hdmi_phy_data {
121 enum dw_hdmi_phy_type type;
122 const char *name;
123 unsigned int gen;
124 bool has_svsret;
125 int (*configure)(struct dw_hdmi *hdmi,
126 const struct dw_hdmi_plat_data *pdata,
127 unsigned long mpixelclock);
128 };
129
130 struct dw_hdmi {
131 struct drm_connector connector;
132 struct drm_bridge bridge;
133
134 unsigned int version;
135
136 struct platform_device *audio;
137 struct platform_device *cec;
138 struct device *dev;
139 struct clk *isfr_clk;
140 struct clk *iahb_clk;
141 struct clk *cec_clk;
142 struct dw_hdmi_i2c *i2c;
143
144 struct hdmi_data_info hdmi_data;
145 const struct dw_hdmi_plat_data *plat_data;
146
147 int vic;
148
149 u8 edid[HDMI_EDID_LEN];
150 bool cable_plugin;
151
152 struct {
153 const struct dw_hdmi_phy_ops *ops;
154 const char *name;
155 void *data;
156 bool enabled;
157 } phy;
158
159 struct drm_display_mode previous_mode;
160
161 struct i2c_adapter *ddc;
162 void __iomem *regs;
163 bool sink_is_hdmi;
164 bool sink_has_audio;
165
166 struct mutex mutex; /* for state below and previous_mode */
167 enum drm_connector_force force; /* mutex-protected force state */
168 bool disabled; /* DRM has disabled our bridge */
169 bool bridge_is_on; /* indicates the bridge is on */
170 bool rxsense; /* rxsense state */
171 u8 phy_mask; /* desired phy int mask settings */
172 u8 mc_clkdis; /* clock disable register */
173
174 spinlock_t audio_lock;
175 struct mutex audio_mutex;
176 unsigned int sample_rate;
177 unsigned int audio_cts;
178 unsigned int audio_n;
179 bool audio_enable;
180
181 unsigned int reg_shift;
182 struct regmap *regm;
183 void (*enable_audio)(struct dw_hdmi *hdmi);
184 void (*disable_audio)(struct dw_hdmi *hdmi);
185
186 struct cec_notifier *cec_notifier;
187 };
188
189 #define HDMI_IH_PHY_STAT0_RX_SENSE \
190 (HDMI_IH_PHY_STAT0_RX_SENSE0 | HDMI_IH_PHY_STAT0_RX_SENSE1 | \
191 HDMI_IH_PHY_STAT0_RX_SENSE2 | HDMI_IH_PHY_STAT0_RX_SENSE3)
192
193 #define HDMI_PHY_RX_SENSE \
194 (HDMI_PHY_RX_SENSE0 | HDMI_PHY_RX_SENSE1 | \
195 HDMI_PHY_RX_SENSE2 | HDMI_PHY_RX_SENSE3)
196
197 static inline void hdmi_writeb(struct dw_hdmi *hdmi, u8 val, int offset)
198 {
199 regmap_write(hdmi->regm, offset << hdmi->reg_shift, val);
200 }
201
202 static inline u8 hdmi_readb(struct dw_hdmi *hdmi, int offset)
203 {
204 unsigned int val = 0;
205
206 regmap_read(hdmi->regm, offset << hdmi->reg_shift, &val);
207
208 return val;
209 }
210
211 static void hdmi_modb(struct dw_hdmi *hdmi, u8 data, u8 mask, unsigned reg)
212 {
213 regmap_update_bits(hdmi->regm, reg << hdmi->reg_shift, mask, data);
214 }
215
216 static void hdmi_mask_writeb(struct dw_hdmi *hdmi, u8 data, unsigned int reg,
217 u8 shift, u8 mask)
218 {
219 hdmi_modb(hdmi, data << shift, mask, reg);
220 }
221
222 static void dw_hdmi_i2c_init(struct dw_hdmi *hdmi)
223 {
224 /* Software reset */
225 hdmi_writeb(hdmi, 0x00, HDMI_I2CM_SOFTRSTZ);
226
227 /* Set Standard Mode speed (determined to be 100KHz on iMX6) */
228 hdmi_writeb(hdmi, 0x00, HDMI_I2CM_DIV);
229
230 /* Set done, not acknowledged and arbitration interrupt polarities */
231 hdmi_writeb(hdmi, HDMI_I2CM_INT_DONE_POL, HDMI_I2CM_INT);
232 hdmi_writeb(hdmi, HDMI_I2CM_CTLINT_NAC_POL | HDMI_I2CM_CTLINT_ARB_POL,
233 HDMI_I2CM_CTLINT);
234
235 /* Clear DONE and ERROR interrupts */
236 hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
237 HDMI_IH_I2CM_STAT0);
238
239 /* Mute DONE and ERROR interrupts */
240 hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
241 HDMI_IH_MUTE_I2CM_STAT0);
242 }
243
244 static int dw_hdmi_i2c_read(struct dw_hdmi *hdmi,
245 unsigned char *buf, unsigned int length)
246 {
247 struct dw_hdmi_i2c *i2c = hdmi->i2c;
248 int stat;
249
250 if (!i2c->is_regaddr) {
251 dev_dbg(hdmi->dev, "set read register address to 0\n");
252 i2c->slave_reg = 0x00;
253 i2c->is_regaddr = true;
254 }
255
256 while (length--) {
257 reinit_completion(&i2c->cmp);
258
259 hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS);
260 if (i2c->is_segment)
261 hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ_EXT,
262 HDMI_I2CM_OPERATION);
263 else
264 hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ,
265 HDMI_I2CM_OPERATION);
266
267 stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
268 if (!stat)
269 return -EAGAIN;
270
271 /* Check for error condition on the bus */
272 if (i2c->stat & HDMI_IH_I2CM_STAT0_ERROR)
273 return -EIO;
274
275 *buf++ = hdmi_readb(hdmi, HDMI_I2CM_DATAI);
276 }
277 i2c->is_segment = false;
278
279 return 0;
280 }
281
282 static int dw_hdmi_i2c_write(struct dw_hdmi *hdmi,
283 unsigned char *buf, unsigned int length)
284 {
285 struct dw_hdmi_i2c *i2c = hdmi->i2c;
286 int stat;
287
288 if (!i2c->is_regaddr) {
289 /* Use the first write byte as register address */
290 i2c->slave_reg = buf[0];
291 length--;
292 buf++;
293 i2c->is_regaddr = true;
294 }
295
296 while (length--) {
297 reinit_completion(&i2c->cmp);
298
299 hdmi_writeb(hdmi, *buf++, HDMI_I2CM_DATAO);
300 hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS);
301 hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_WRITE,
302 HDMI_I2CM_OPERATION);
303
304 stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10);
305 if (!stat)
306 return -EAGAIN;
307
308 /* Check for error condition on the bus */
309 if (i2c->stat & HDMI_IH_I2CM_STAT0_ERROR)
310 return -EIO;
311 }
312
313 return 0;
314 }
315
316 static int dw_hdmi_i2c_xfer(struct i2c_adapter *adap,
317 struct i2c_msg *msgs, int num)
318 {
319 struct dw_hdmi *hdmi = i2c_get_adapdata(adap);
320 struct dw_hdmi_i2c *i2c = hdmi->i2c;
321 u8 addr = msgs[0].addr;
322 int i, ret = 0;
323
324 dev_dbg(hdmi->dev, "xfer: num: %d, addr: %#x\n", num, addr);
325
326 for (i = 0; i < num; i++) {
327 if (msgs[i].len == 0) {
328 dev_dbg(hdmi->dev,
329 "unsupported transfer %d/%d, no data\n",
330 i + 1, num);
331 return -EOPNOTSUPP;
332 }
333 }
334
335 mutex_lock(&i2c->lock);
336
337 /* Unmute DONE and ERROR interrupts */
338 hdmi_writeb(hdmi, 0x00, HDMI_IH_MUTE_I2CM_STAT0);
339
340 /* Set slave device address taken from the first I2C message */
341 hdmi_writeb(hdmi, addr, HDMI_I2CM_SLAVE);
342
343 /* Set slave device register address on transfer */
344 i2c->is_regaddr = false;
345
346 /* Set segment pointer for I2C extended read mode operation */
347 i2c->is_segment = false;
348
349 for (i = 0; i < num; i++) {
350 dev_dbg(hdmi->dev, "xfer: num: %d/%d, len: %d, flags: %#x\n",
351 i + 1, num, msgs[i].len, msgs[i].flags);
352 if (msgs[i].addr == DDC_SEGMENT_ADDR && msgs[i].len == 1) {
353 i2c->is_segment = true;
354 hdmi_writeb(hdmi, DDC_SEGMENT_ADDR, HDMI_I2CM_SEGADDR);
355 hdmi_writeb(hdmi, *msgs[i].buf, HDMI_I2CM_SEGPTR);
356 } else {
357 if (msgs[i].flags & I2C_M_RD)
358 ret = dw_hdmi_i2c_read(hdmi, msgs[i].buf,
359 msgs[i].len);
360 else
361 ret = dw_hdmi_i2c_write(hdmi, msgs[i].buf,
362 msgs[i].len);
363 }
364 if (ret < 0)
365 break;
366 }
367
368 if (!ret)
369 ret = num;
370
371 /* Mute DONE and ERROR interrupts */
372 hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE,
373 HDMI_IH_MUTE_I2CM_STAT0);
374
375 mutex_unlock(&i2c->lock);
376
377 return ret;
378 }
379
380 static u32 dw_hdmi_i2c_func(struct i2c_adapter *adapter)
381 {
382 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
383 }
384
385 static const struct i2c_algorithm dw_hdmi_algorithm = {
386 .master_xfer = dw_hdmi_i2c_xfer,
387 .functionality = dw_hdmi_i2c_func,
388 };
389
390 static struct i2c_adapter *dw_hdmi_i2c_adapter(struct dw_hdmi *hdmi)
391 {
392 struct i2c_adapter *adap;
393 struct dw_hdmi_i2c *i2c;
394 int ret;
395
396 i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL);
397 if (!i2c)
398 return ERR_PTR(-ENOMEM);
399
400 mutex_init(&i2c->lock);
401 init_completion(&i2c->cmp);
402
403 adap = &i2c->adap;
404 adap->class = I2C_CLASS_DDC;
405 adap->owner = THIS_MODULE;
406 adap->dev.parent = hdmi->dev;
407 adap->algo = &dw_hdmi_algorithm;
408 strlcpy(adap->name, "DesignWare HDMI", sizeof(adap->name));
409 i2c_set_adapdata(adap, hdmi);
410
411 ret = i2c_add_adapter(adap);
412 if (ret) {
413 dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name);
414 devm_kfree(hdmi->dev, i2c);
415 return ERR_PTR(ret);
416 }
417
418 hdmi->i2c = i2c;
419
420 dev_info(hdmi->dev, "registered %s I2C bus driver\n", adap->name);
421
422 return adap;
423 }
424
425 static void hdmi_set_cts_n(struct dw_hdmi *hdmi, unsigned int cts,
426 unsigned int n)
427 {
428 /* Must be set/cleared first */
429 hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);
430
431 /* nshift factor = 0 */
432 hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3);
433
434 hdmi_writeb(hdmi, ((cts >> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK) |
435 HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3);
436 hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2);
437 hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1);
438
439 hdmi_writeb(hdmi, (n >> 16) & 0x0f, HDMI_AUD_N3);
440 hdmi_writeb(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2);
441 hdmi_writeb(hdmi, n & 0xff, HDMI_AUD_N1);
442 }
443
444 static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk)
445 {
446 unsigned int n = (128 * freq) / 1000;
447 unsigned int mult = 1;
448
449 while (freq > 48000) {
450 mult *= 2;
451 freq /= 2;
452 }
453
454 switch (freq) {
455 case 32000:
456 if (pixel_clk == 25175000)
457 n = 4576;
458 else if (pixel_clk == 27027000)
459 n = 4096;
460 else if (pixel_clk == 74176000 || pixel_clk == 148352000)
461 n = 11648;
462 else
463 n = 4096;
464 n *= mult;
465 break;
466
467 case 44100:
468 if (pixel_clk == 25175000)
469 n = 7007;
470 else if (pixel_clk == 74176000)
471 n = 17836;
472 else if (pixel_clk == 148352000)
473 n = 8918;
474 else
475 n = 6272;
476 n *= mult;
477 break;
478
479 case 48000:
480 if (pixel_clk == 25175000)
481 n = 6864;
482 else if (pixel_clk == 27027000)
483 n = 6144;
484 else if (pixel_clk == 74176000)
485 n = 11648;
486 else if (pixel_clk == 148352000)
487 n = 5824;
488 else
489 n = 6144;
490 n *= mult;
491 break;
492
493 default:
494 break;
495 }
496
497 return n;
498 }
499
500 static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi,
501 unsigned long pixel_clk, unsigned int sample_rate)
502 {
503 unsigned long ftdms = pixel_clk;
504 unsigned int n, cts;
505 u64 tmp;
506
507 n = hdmi_compute_n(sample_rate, pixel_clk);
508
509 /*
510 * Compute the CTS value from the N value. Note that CTS and N
511 * can be up to 20 bits in total, so we need 64-bit math. Also
512 * note that our TDMS clock is not fully accurate; it is accurate
513 * to kHz. This can introduce an unnecessary remainder in the
514 * calculation below, so we don't try to warn about that.
515 */
516 tmp = (u64)ftdms * n;
517 do_div(tmp, 128 * sample_rate);
518 cts = tmp;
519
520 dev_dbg(hdmi->dev, "%s: fs=%uHz ftdms=%lu.%03luMHz N=%d cts=%d\n",
521 __func__, sample_rate, ftdms / 1000000, (ftdms / 1000) % 1000,
522 n, cts);
523
524 spin_lock_irq(&hdmi->audio_lock);
525 hdmi->audio_n = n;
526 hdmi->audio_cts = cts;
527 hdmi_set_cts_n(hdmi, cts, hdmi->audio_enable ? n : 0);
528 spin_unlock_irq(&hdmi->audio_lock);
529 }
530
531 static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi)
532 {
533 mutex_lock(&hdmi->audio_mutex);
534 hdmi_set_clk_regenerator(hdmi, 74250000, hdmi->sample_rate);
535 mutex_unlock(&hdmi->audio_mutex);
536 }
537
538 static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi *hdmi)
539 {
540 mutex_lock(&hdmi->audio_mutex);
541 hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mpixelclock,
542 hdmi->sample_rate);
543 mutex_unlock(&hdmi->audio_mutex);
544 }
545
546 void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate)
547 {
548 mutex_lock(&hdmi->audio_mutex);
549 hdmi->sample_rate = rate;
550 hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mpixelclock,
551 hdmi->sample_rate);
552 mutex_unlock(&hdmi->audio_mutex);
553 }
554 EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_rate);
555
556 static void hdmi_enable_audio_clk(struct dw_hdmi *hdmi, bool enable)
557 {
558 if (enable)
559 hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE;
560 else
561 hdmi->mc_clkdis |= HDMI_MC_CLKDIS_AUDCLK_DISABLE;
562 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
563 }
564
565 static void dw_hdmi_ahb_audio_enable(struct dw_hdmi *hdmi)
566 {
567 hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n);
568 }
569
570 static void dw_hdmi_ahb_audio_disable(struct dw_hdmi *hdmi)
571 {
572 hdmi_set_cts_n(hdmi, hdmi->audio_cts, 0);
573 }
574
575 static void dw_hdmi_i2s_audio_enable(struct dw_hdmi *hdmi)
576 {
577 hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n);
578 hdmi_enable_audio_clk(hdmi, true);
579 }
580
581 static void dw_hdmi_i2s_audio_disable(struct dw_hdmi *hdmi)
582 {
583 hdmi_enable_audio_clk(hdmi, false);
584 }
585
586 void dw_hdmi_audio_enable(struct dw_hdmi *hdmi)
587 {
588 unsigned long flags;
589
590 spin_lock_irqsave(&hdmi->audio_lock, flags);
591 hdmi->audio_enable = true;
592 if (hdmi->enable_audio)
593 hdmi->enable_audio(hdmi);
594 spin_unlock_irqrestore(&hdmi->audio_lock, flags);
595 }
596 EXPORT_SYMBOL_GPL(dw_hdmi_audio_enable);
597
598 void dw_hdmi_audio_disable(struct dw_hdmi *hdmi)
599 {
600 unsigned long flags;
601
602 spin_lock_irqsave(&hdmi->audio_lock, flags);
603 hdmi->audio_enable = false;
604 if (hdmi->disable_audio)
605 hdmi->disable_audio(hdmi);
606 spin_unlock_irqrestore(&hdmi->audio_lock, flags);
607 }
608 EXPORT_SYMBOL_GPL(dw_hdmi_audio_disable);
609
610 static bool hdmi_bus_fmt_is_rgb(unsigned int bus_format)
611 {
612 switch (bus_format) {
613 case MEDIA_BUS_FMT_RGB888_1X24:
614 case MEDIA_BUS_FMT_RGB101010_1X30:
615 case MEDIA_BUS_FMT_RGB121212_1X36:
616 case MEDIA_BUS_FMT_RGB161616_1X48:
617 return true;
618
619 default:
620 return false;
621 }
622 }
623
624 static bool hdmi_bus_fmt_is_yuv444(unsigned int bus_format)
625 {
626 switch (bus_format) {
627 case MEDIA_BUS_FMT_YUV8_1X24:
628 case MEDIA_BUS_FMT_YUV10_1X30:
629 case MEDIA_BUS_FMT_YUV12_1X36:
630 case MEDIA_BUS_FMT_YUV16_1X48:
631 return true;
632
633 default:
634 return false;
635 }
636 }
637
638 static bool hdmi_bus_fmt_is_yuv422(unsigned int bus_format)
639 {
640 switch (bus_format) {
641 case MEDIA_BUS_FMT_UYVY8_1X16:
642 case MEDIA_BUS_FMT_UYVY10_1X20:
643 case MEDIA_BUS_FMT_UYVY12_1X24:
644 return true;
645
646 default:
647 return false;
648 }
649 }
650
651 static int hdmi_bus_fmt_color_depth(unsigned int bus_format)
652 {
653 switch (bus_format) {
654 case MEDIA_BUS_FMT_RGB888_1X24:
655 case MEDIA_BUS_FMT_YUV8_1X24:
656 case MEDIA_BUS_FMT_UYVY8_1X16:
657 case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
658 return 8;
659
660 case MEDIA_BUS_FMT_RGB101010_1X30:
661 case MEDIA_BUS_FMT_YUV10_1X30:
662 case MEDIA_BUS_FMT_UYVY10_1X20:
663 case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
664 return 10;
665
666 case MEDIA_BUS_FMT_RGB121212_1X36:
667 case MEDIA_BUS_FMT_YUV12_1X36:
668 case MEDIA_BUS_FMT_UYVY12_1X24:
669 case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
670 return 12;
671
672 case MEDIA_BUS_FMT_RGB161616_1X48:
673 case MEDIA_BUS_FMT_YUV16_1X48:
674 case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
675 return 16;
676
677 default:
678 return 0;
679 }
680 }
681
682 /*
683 * this submodule is responsible for the video data synchronization.
684 * for example, for RGB 4:4:4 input, the data map is defined as
685 * pin{47~40} <==> R[7:0]
686 * pin{31~24} <==> G[7:0]
687 * pin{15~8} <==> B[7:0]
688 */
689 static void hdmi_video_sample(struct dw_hdmi *hdmi)
690 {
691 int color_format = 0;
692 u8 val;
693
694 switch (hdmi->hdmi_data.enc_in_bus_format) {
695 case MEDIA_BUS_FMT_RGB888_1X24:
696 color_format = 0x01;
697 break;
698 case MEDIA_BUS_FMT_RGB101010_1X30:
699 color_format = 0x03;
700 break;
701 case MEDIA_BUS_FMT_RGB121212_1X36:
702 color_format = 0x05;
703 break;
704 case MEDIA_BUS_FMT_RGB161616_1X48:
705 color_format = 0x07;
706 break;
707
708 case MEDIA_BUS_FMT_YUV8_1X24:
709 case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
710 color_format = 0x09;
711 break;
712 case MEDIA_BUS_FMT_YUV10_1X30:
713 case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
714 color_format = 0x0B;
715 break;
716 case MEDIA_BUS_FMT_YUV12_1X36:
717 case MEDIA_BUS_FMT_UYYVYY12_0_5X36:
718 color_format = 0x0D;
719 break;
720 case MEDIA_BUS_FMT_YUV16_1X48:
721 case MEDIA_BUS_FMT_UYYVYY16_0_5X48:
722 color_format = 0x0F;
723 break;
724
725 case MEDIA_BUS_FMT_UYVY8_1X16:
726 color_format = 0x16;
727 break;
728 case MEDIA_BUS_FMT_UYVY10_1X20:
729 color_format = 0x14;
730 break;
731 case MEDIA_BUS_FMT_UYVY12_1X24:
732 color_format = 0x12;
733 break;
734
735 default:
736 return;
737 }
738
739 val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE |
740 ((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) &
741 HDMI_TX_INVID0_VIDEO_MAPPING_MASK);
742 hdmi_writeb(hdmi, val, HDMI_TX_INVID0);
743
744 /* Enable TX stuffing: When DE is inactive, fix the output data to 0 */
745 val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE |
746 HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE |
747 HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE;
748 hdmi_writeb(hdmi, val, HDMI_TX_INSTUFFING);
749 hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA0);
750 hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA1);
751 hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA0);
752 hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA1);
753 hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA0);
754 hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA1);
755 }
756
757 static int is_color_space_conversion(struct dw_hdmi *hdmi)
758 {
759 return hdmi->hdmi_data.enc_in_bus_format != hdmi->hdmi_data.enc_out_bus_format;
760 }
761
762 static int is_color_space_decimation(struct dw_hdmi *hdmi)
763 {
764 if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format))
765 return 0;
766
767 if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_in_bus_format) ||
768 hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_in_bus_format))
769 return 1;
770
771 return 0;
772 }
773
774 static int is_color_space_interpolation(struct dw_hdmi *hdmi)
775 {
776 if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_in_bus_format))
777 return 0;
778
779 if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format) ||
780 hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format))
781 return 1;
782
783 return 0;
784 }
785
786 static void dw_hdmi_update_csc_coeffs(struct dw_hdmi *hdmi)
787 {
788 const u16 (*csc_coeff)[3][4] = &csc_coeff_default;
789 unsigned i;
790 u32 csc_scale = 1;
791
792 if (is_color_space_conversion(hdmi)) {
793 if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) {
794 if (hdmi->hdmi_data.enc_out_encoding ==
795 V4L2_YCBCR_ENC_601)
796 csc_coeff = &csc_coeff_rgb_out_eitu601;
797 else
798 csc_coeff = &csc_coeff_rgb_out_eitu709;
799 } else if (hdmi_bus_fmt_is_rgb(
800 hdmi->hdmi_data.enc_in_bus_format)) {
801 if (hdmi->hdmi_data.enc_out_encoding ==
802 V4L2_YCBCR_ENC_601)
803 csc_coeff = &csc_coeff_rgb_in_eitu601;
804 else
805 csc_coeff = &csc_coeff_rgb_in_eitu709;
806 csc_scale = 0;
807 }
808 }
809
810 /* The CSC registers are sequential, alternating MSB then LSB */
811 for (i = 0; i < ARRAY_SIZE(csc_coeff_default[0]); i++) {
812 u16 coeff_a = (*csc_coeff)[0][i];
813 u16 coeff_b = (*csc_coeff)[1][i];
814 u16 coeff_c = (*csc_coeff)[2][i];
815
816 hdmi_writeb(hdmi, coeff_a & 0xff, HDMI_CSC_COEF_A1_LSB + i * 2);
817 hdmi_writeb(hdmi, coeff_a >> 8, HDMI_CSC_COEF_A1_MSB + i * 2);
818 hdmi_writeb(hdmi, coeff_b & 0xff, HDMI_CSC_COEF_B1_LSB + i * 2);
819 hdmi_writeb(hdmi, coeff_b >> 8, HDMI_CSC_COEF_B1_MSB + i * 2);
820 hdmi_writeb(hdmi, coeff_c & 0xff, HDMI_CSC_COEF_C1_LSB + i * 2);
821 hdmi_writeb(hdmi, coeff_c >> 8, HDMI_CSC_COEF_C1_MSB + i * 2);
822 }
823
824 hdmi_modb(hdmi, csc_scale, HDMI_CSC_SCALE_CSCSCALE_MASK,
825 HDMI_CSC_SCALE);
826 }
827
828 static void hdmi_video_csc(struct dw_hdmi *hdmi)
829 {
830 int color_depth = 0;
831 int interpolation = HDMI_CSC_CFG_INTMODE_DISABLE;
832 int decimation = 0;
833
834 /* YCC422 interpolation to 444 mode */
835 if (is_color_space_interpolation(hdmi))
836 interpolation = HDMI_CSC_CFG_INTMODE_CHROMA_INT_FORMULA1;
837 else if (is_color_space_decimation(hdmi))
838 decimation = HDMI_CSC_CFG_DECMODE_CHROMA_INT_FORMULA3;
839
840 switch (hdmi_bus_fmt_color_depth(hdmi->hdmi_data.enc_out_bus_format)) {
841 case 8:
842 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP;
843 break;
844 case 10:
845 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_30BPP;
846 break;
847 case 12:
848 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_36BPP;
849 break;
850 case 16:
851 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_48BPP;
852 break;
853
854 default:
855 return;
856 }
857
858 /* Configure the CSC registers */
859 hdmi_writeb(hdmi, interpolation | decimation, HDMI_CSC_CFG);
860 hdmi_modb(hdmi, color_depth, HDMI_CSC_SCALE_CSC_COLORDE_PTH_MASK,
861 HDMI_CSC_SCALE);
862
863 dw_hdmi_update_csc_coeffs(hdmi);
864 }
865
866 /*
867 * HDMI video packetizer is used to packetize the data.
868 * for example, if input is YCC422 mode or repeater is used,
869 * data should be repacked this module can be bypassed.
870 */
871 static void hdmi_video_packetize(struct dw_hdmi *hdmi)
872 {
873 unsigned int color_depth = 0;
874 unsigned int remap_size = HDMI_VP_REMAP_YCC422_16bit;
875 unsigned int output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_PP;
876 struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data;
877 u8 val, vp_conf;
878
879 if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format) ||
880 hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format)) {
881 switch (hdmi_bus_fmt_color_depth(
882 hdmi->hdmi_data.enc_out_bus_format)) {
883 case 8:
884 color_depth = 4;
885 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
886 break;
887 case 10:
888 color_depth = 5;
889 break;
890 case 12:
891 color_depth = 6;
892 break;
893 case 16:
894 color_depth = 7;
895 break;
896 default:
897 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
898 }
899 } else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) {
900 switch (hdmi_bus_fmt_color_depth(
901 hdmi->hdmi_data.enc_out_bus_format)) {
902 case 0:
903 case 8:
904 remap_size = HDMI_VP_REMAP_YCC422_16bit;
905 break;
906 case 10:
907 remap_size = HDMI_VP_REMAP_YCC422_20bit;
908 break;
909 case 12:
910 remap_size = HDMI_VP_REMAP_YCC422_24bit;
911 break;
912
913 default:
914 return;
915 }
916 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422;
917 } else {
918 return;
919 }
920
921 /* set the packetizer registers */
922 val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) &
923 HDMI_VP_PR_CD_COLOR_DEPTH_MASK) |
924 ((hdmi_data->pix_repet_factor <<
925 HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) &
926 HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK);
927 hdmi_writeb(hdmi, val, HDMI_VP_PR_CD);
928
929 hdmi_modb(hdmi, HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE,
930 HDMI_VP_STUFF_PR_STUFFING_MASK, HDMI_VP_STUFF);
931
932 /* Data from pixel repeater block */
933 if (hdmi_data->pix_repet_factor > 1) {
934 vp_conf = HDMI_VP_CONF_PR_EN_ENABLE |
935 HDMI_VP_CONF_BYPASS_SELECT_PIX_REPEATER;
936 } else { /* data from packetizer block */
937 vp_conf = HDMI_VP_CONF_PR_EN_DISABLE |
938 HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER;
939 }
940
941 hdmi_modb(hdmi, vp_conf,
942 HDMI_VP_CONF_PR_EN_MASK |
943 HDMI_VP_CONF_BYPASS_SELECT_MASK, HDMI_VP_CONF);
944
945 hdmi_modb(hdmi, 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET,
946 HDMI_VP_STUFF_IDEFAULT_PHASE_MASK, HDMI_VP_STUFF);
947
948 hdmi_writeb(hdmi, remap_size, HDMI_VP_REMAP);
949
950 if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_PP) {
951 vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE |
952 HDMI_VP_CONF_PP_EN_ENABLE |
953 HDMI_VP_CONF_YCC422_EN_DISABLE;
954 } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422) {
955 vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE |
956 HDMI_VP_CONF_PP_EN_DISABLE |
957 HDMI_VP_CONF_YCC422_EN_ENABLE;
958 } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS) {
959 vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE |
960 HDMI_VP_CONF_PP_EN_DISABLE |
961 HDMI_VP_CONF_YCC422_EN_DISABLE;
962 } else {
963 return;
964 }
965
966 hdmi_modb(hdmi, vp_conf,
967 HDMI_VP_CONF_BYPASS_EN_MASK | HDMI_VP_CONF_PP_EN_ENMASK |
968 HDMI_VP_CONF_YCC422_EN_MASK, HDMI_VP_CONF);
969
970 hdmi_modb(hdmi, HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE |
971 HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE,
972 HDMI_VP_STUFF_PP_STUFFING_MASK |
973 HDMI_VP_STUFF_YCC422_STUFFING_MASK, HDMI_VP_STUFF);
974
975 hdmi_modb(hdmi, output_select, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK,
976 HDMI_VP_CONF);
977 }
978
979 /* -----------------------------------------------------------------------------
980 * Synopsys PHY Handling
981 */
982
983 static inline void hdmi_phy_test_clear(struct dw_hdmi *hdmi,
984 unsigned char bit)
985 {
986 hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTCLR_OFFSET,
987 HDMI_PHY_TST0_TSTCLR_MASK, HDMI_PHY_TST0);
988 }
989
990 static bool hdmi_phy_wait_i2c_done(struct dw_hdmi *hdmi, int msec)
991 {
992 u32 val;
993
994 while ((val = hdmi_readb(hdmi, HDMI_IH_I2CMPHY_STAT0) & 0x3) == 0) {
995 if (msec-- == 0)
996 return false;
997 udelay(1000);
998 }
999 hdmi_writeb(hdmi, val, HDMI_IH_I2CMPHY_STAT0);
1000
1001 return true;
1002 }
1003
1004 void dw_hdmi_phy_i2c_write(struct dw_hdmi *hdmi, unsigned short data,
1005 unsigned char addr)
1006 {
1007 hdmi_writeb(hdmi, 0xFF, HDMI_IH_I2CMPHY_STAT0);
1008 hdmi_writeb(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR);
1009 hdmi_writeb(hdmi, (unsigned char)(data >> 8),
1010 HDMI_PHY_I2CM_DATAO_1_ADDR);
1011 hdmi_writeb(hdmi, (unsigned char)(data >> 0),
1012 HDMI_PHY_I2CM_DATAO_0_ADDR);
1013 hdmi_writeb(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE,
1014 HDMI_PHY_I2CM_OPERATION_ADDR);
1015 hdmi_phy_wait_i2c_done(hdmi, 1000);
1016 }
1017 EXPORT_SYMBOL_GPL(dw_hdmi_phy_i2c_write);
1018
1019 static void dw_hdmi_phy_enable_powerdown(struct dw_hdmi *hdmi, bool enable)
1020 {
1021 hdmi_mask_writeb(hdmi, !enable, HDMI_PHY_CONF0,
1022 HDMI_PHY_CONF0_PDZ_OFFSET,
1023 HDMI_PHY_CONF0_PDZ_MASK);
1024 }
1025
1026 static void dw_hdmi_phy_enable_tmds(struct dw_hdmi *hdmi, u8 enable)
1027 {
1028 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1029 HDMI_PHY_CONF0_ENTMDS_OFFSET,
1030 HDMI_PHY_CONF0_ENTMDS_MASK);
1031 }
1032
1033 static void dw_hdmi_phy_enable_svsret(struct dw_hdmi *hdmi, u8 enable)
1034 {
1035 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1036 HDMI_PHY_CONF0_SVSRET_OFFSET,
1037 HDMI_PHY_CONF0_SVSRET_MASK);
1038 }
1039
1040 static void dw_hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, u8 enable)
1041 {
1042 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1043 HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET,
1044 HDMI_PHY_CONF0_GEN2_PDDQ_MASK);
1045 }
1046
1047 static void dw_hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, u8 enable)
1048 {
1049 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1050 HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET,
1051 HDMI_PHY_CONF0_GEN2_TXPWRON_MASK);
1052 }
1053
1054 static void dw_hdmi_phy_sel_data_en_pol(struct dw_hdmi *hdmi, u8 enable)
1055 {
1056 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1057 HDMI_PHY_CONF0_SELDATAENPOL_OFFSET,
1058 HDMI_PHY_CONF0_SELDATAENPOL_MASK);
1059 }
1060
1061 static void dw_hdmi_phy_sel_interface_control(struct dw_hdmi *hdmi, u8 enable)
1062 {
1063 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0,
1064 HDMI_PHY_CONF0_SELDIPIF_OFFSET,
1065 HDMI_PHY_CONF0_SELDIPIF_MASK);
1066 }
1067
1068 static void dw_hdmi_phy_power_off(struct dw_hdmi *hdmi)
1069 {
1070 const struct dw_hdmi_phy_data *phy = hdmi->phy.data;
1071 unsigned int i;
1072 u16 val;
1073
1074 if (phy->gen == 1) {
1075 dw_hdmi_phy_enable_tmds(hdmi, 0);
1076 dw_hdmi_phy_enable_powerdown(hdmi, true);
1077 return;
1078 }
1079
1080 dw_hdmi_phy_gen2_txpwron(hdmi, 0);
1081
1082 /*
1083 * Wait for TX_PHY_LOCK to be deasserted to indicate that the PHY went
1084 * to low power mode.
1085 */
1086 for (i = 0; i < 5; ++i) {
1087 val = hdmi_readb(hdmi, HDMI_PHY_STAT0);
1088 if (!(val & HDMI_PHY_TX_PHY_LOCK))
1089 break;
1090
1091 usleep_range(1000, 2000);
1092 }
1093
1094 if (val & HDMI_PHY_TX_PHY_LOCK)
1095 dev_warn(hdmi->dev, "PHY failed to power down\n");
1096 else
1097 dev_dbg(hdmi->dev, "PHY powered down in %u iterations\n", i);
1098
1099 dw_hdmi_phy_gen2_pddq(hdmi, 1);
1100 }
1101
1102 static int dw_hdmi_phy_power_on(struct dw_hdmi *hdmi)
1103 {
1104 const struct dw_hdmi_phy_data *phy = hdmi->phy.data;
1105 unsigned int i;
1106 u8 val;
1107
1108 if (phy->gen == 1) {
1109 dw_hdmi_phy_enable_powerdown(hdmi, false);
1110
1111 /* Toggle TMDS enable. */
1112 dw_hdmi_phy_enable_tmds(hdmi, 0);
1113 dw_hdmi_phy_enable_tmds(hdmi, 1);
1114 return 0;
1115 }
1116
1117 dw_hdmi_phy_gen2_txpwron(hdmi, 1);
1118 dw_hdmi_phy_gen2_pddq(hdmi, 0);
1119
1120 /* Wait for PHY PLL lock */
1121 for (i = 0; i < 5; ++i) {
1122 val = hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK;
1123 if (val)
1124 break;
1125
1126 usleep_range(1000, 2000);
1127 }
1128
1129 if (!val) {
1130 dev_err(hdmi->dev, "PHY PLL failed to lock\n");
1131 return -ETIMEDOUT;
1132 }
1133
1134 dev_dbg(hdmi->dev, "PHY PLL locked %u iterations\n", i);
1135 return 0;
1136 }
1137
1138 /*
1139 * PHY configuration function for the DWC HDMI 3D TX PHY. Based on the available
1140 * information the DWC MHL PHY has the same register layout and is thus also
1141 * supported by this function.
1142 */
1143 static int hdmi_phy_configure_dwc_hdmi_3d_tx(struct dw_hdmi *hdmi,
1144 const struct dw_hdmi_plat_data *pdata,
1145 unsigned long mpixelclock)
1146 {
1147 const struct dw_hdmi_mpll_config *mpll_config = pdata->mpll_cfg;
1148 const struct dw_hdmi_curr_ctrl *curr_ctrl = pdata->cur_ctr;
1149 const struct dw_hdmi_phy_config *phy_config = pdata->phy_config;
1150
1151 /* PLL/MPLL Cfg - always match on final entry */
1152 for (; mpll_config->mpixelclock != ~0UL; mpll_config++)
1153 if (mpixelclock <= mpll_config->mpixelclock)
1154 break;
1155
1156 for (; curr_ctrl->mpixelclock != ~0UL; curr_ctrl++)
1157 if (mpixelclock <= curr_ctrl->mpixelclock)
1158 break;
1159
1160 for (; phy_config->mpixelclock != ~0UL; phy_config++)
1161 if (mpixelclock <= phy_config->mpixelclock)
1162 break;
1163
1164 if (mpll_config->mpixelclock == ~0UL ||
1165 curr_ctrl->mpixelclock == ~0UL ||
1166 phy_config->mpixelclock == ~0UL)
1167 return -EINVAL;
1168
1169 dw_hdmi_phy_i2c_write(hdmi, mpll_config->res[0].cpce,
1170 HDMI_3D_TX_PHY_CPCE_CTRL);
1171 dw_hdmi_phy_i2c_write(hdmi, mpll_config->res[0].gmp,
1172 HDMI_3D_TX_PHY_GMPCTRL);
1173 dw_hdmi_phy_i2c_write(hdmi, curr_ctrl->curr[0],
1174 HDMI_3D_TX_PHY_CURRCTRL);
1175
1176 dw_hdmi_phy_i2c_write(hdmi, 0, HDMI_3D_TX_PHY_PLLPHBYCTRL);
1177 dw_hdmi_phy_i2c_write(hdmi, HDMI_3D_TX_PHY_MSM_CTRL_CKO_SEL_FB_CLK,
1178 HDMI_3D_TX_PHY_MSM_CTRL);
1179
1180 dw_hdmi_phy_i2c_write(hdmi, phy_config->term, HDMI_3D_TX_PHY_TXTERM);
1181 dw_hdmi_phy_i2c_write(hdmi, phy_config->sym_ctr,
1182 HDMI_3D_TX_PHY_CKSYMTXCTRL);
1183 dw_hdmi_phy_i2c_write(hdmi, phy_config->vlev_ctr,
1184 HDMI_3D_TX_PHY_VLEVCTRL);
1185
1186 /* Override and disable clock termination. */
1187 dw_hdmi_phy_i2c_write(hdmi, HDMI_3D_TX_PHY_CKCALCTRL_OVERRIDE,
1188 HDMI_3D_TX_PHY_CKCALCTRL);
1189
1190 return 0;
1191 }
1192
1193 static int hdmi_phy_configure(struct dw_hdmi *hdmi)
1194 {
1195 const struct dw_hdmi_phy_data *phy = hdmi->phy.data;
1196 const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
1197 unsigned long mpixelclock = hdmi->hdmi_data.video_mode.mpixelclock;
1198 int ret;
1199
1200 dw_hdmi_phy_power_off(hdmi);
1201
1202 /* Leave low power consumption mode by asserting SVSRET. */
1203 if (phy->has_svsret)
1204 dw_hdmi_phy_enable_svsret(hdmi, 1);
1205
1206 /* PHY reset. The reset signal is active high on Gen2 PHYs. */
1207 hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_PHYRSTZ, HDMI_MC_PHYRSTZ);
1208 hdmi_writeb(hdmi, 0, HDMI_MC_PHYRSTZ);
1209
1210 hdmi_writeb(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST);
1211
1212 hdmi_phy_test_clear(hdmi, 1);
1213 hdmi_writeb(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2,
1214 HDMI_PHY_I2CM_SLAVE_ADDR);
1215 hdmi_phy_test_clear(hdmi, 0);
1216
1217 /* Write to the PHY as configured by the platform */
1218 if (pdata->configure_phy)
1219 ret = pdata->configure_phy(hdmi, pdata, mpixelclock);
1220 else
1221 ret = phy->configure(hdmi, pdata, mpixelclock);
1222 if (ret) {
1223 dev_err(hdmi->dev, "PHY configuration failed (clock %lu)\n",
1224 mpixelclock);
1225 return ret;
1226 }
1227
1228 return dw_hdmi_phy_power_on(hdmi);
1229 }
1230
1231 static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data,
1232 struct drm_display_mode *mode)
1233 {
1234 int i, ret;
1235
1236 /* HDMI Phy spec says to do the phy initialization sequence twice */
1237 for (i = 0; i < 2; i++) {
1238 dw_hdmi_phy_sel_data_en_pol(hdmi, 1);
1239 dw_hdmi_phy_sel_interface_control(hdmi, 0);
1240
1241 ret = hdmi_phy_configure(hdmi);
1242 if (ret)
1243 return ret;
1244 }
1245
1246 return 0;
1247 }
1248
1249 static void dw_hdmi_phy_disable(struct dw_hdmi *hdmi, void *data)
1250 {
1251 dw_hdmi_phy_power_off(hdmi);
1252 }
1253
1254 static enum drm_connector_status dw_hdmi_phy_read_hpd(struct dw_hdmi *hdmi,
1255 void *data)
1256 {
1257 return hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_HPD ?
1258 connector_status_connected : connector_status_disconnected;
1259 }
1260
1261 static void dw_hdmi_phy_update_hpd(struct dw_hdmi *hdmi, void *data,
1262 bool force, bool disabled, bool rxsense)
1263 {
1264 u8 old_mask = hdmi->phy_mask;
1265
1266 if (force || disabled || !rxsense)
1267 hdmi->phy_mask |= HDMI_PHY_RX_SENSE;
1268 else
1269 hdmi->phy_mask &= ~HDMI_PHY_RX_SENSE;
1270
1271 if (old_mask != hdmi->phy_mask)
1272 hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);
1273 }
1274
1275 static void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data)
1276 {
1277 /*
1278 * Configure the PHY RX SENSE and HPD interrupts polarities and clear
1279 * any pending interrupt.
1280 */
1281 hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0);
1282 hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE,
1283 HDMI_IH_PHY_STAT0);
1284
1285 /* Enable cable hot plug irq. */
1286 hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0);
1287
1288 /* Clear and unmute interrupts. */
1289 hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE,
1290 HDMI_IH_PHY_STAT0);
1291 hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
1292 HDMI_IH_MUTE_PHY_STAT0);
1293 }
1294
1295 static const struct dw_hdmi_phy_ops dw_hdmi_synopsys_phy_ops = {
1296 .init = dw_hdmi_phy_init,
1297 .disable = dw_hdmi_phy_disable,
1298 .read_hpd = dw_hdmi_phy_read_hpd,
1299 .update_hpd = dw_hdmi_phy_update_hpd,
1300 .setup_hpd = dw_hdmi_phy_setup_hpd,
1301 };
1302
1303 /* -----------------------------------------------------------------------------
1304 * HDMI TX Setup
1305 */
1306
1307 static void hdmi_tx_hdcp_config(struct dw_hdmi *hdmi)
1308 {
1309 u8 de;
1310
1311 if (hdmi->hdmi_data.video_mode.mdataenablepolarity)
1312 de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_HIGH;
1313 else
1314 de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_LOW;
1315
1316 /* disable rx detect */
1317 hdmi_modb(hdmi, HDMI_A_HDCPCFG0_RXDETECT_DISABLE,
1318 HDMI_A_HDCPCFG0_RXDETECT_MASK, HDMI_A_HDCPCFG0);
1319
1320 hdmi_modb(hdmi, de, HDMI_A_VIDPOLCFG_DATAENPOL_MASK, HDMI_A_VIDPOLCFG);
1321
1322 hdmi_modb(hdmi, HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_DISABLE,
1323 HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_MASK, HDMI_A_HDCPCFG1);
1324 }
1325
1326 static void hdmi_config_AVI(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
1327 {
1328 struct hdmi_avi_infoframe frame;
1329 u8 val;
1330
1331 /* Initialise info frame from DRM mode */
1332 drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
1333
1334 if (hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format))
1335 frame.colorspace = HDMI_COLORSPACE_YUV444;
1336 else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format))
1337 frame.colorspace = HDMI_COLORSPACE_YUV422;
1338 else
1339 frame.colorspace = HDMI_COLORSPACE_RGB;
1340
1341 /* Set up colorimetry */
1342 switch (hdmi->hdmi_data.enc_out_encoding) {
1343 case V4L2_YCBCR_ENC_601:
1344 if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV601)
1345 frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
1346 else
1347 frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
1348 frame.extended_colorimetry =
1349 HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1350 break;
1351 case V4L2_YCBCR_ENC_709:
1352 if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV709)
1353 frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
1354 else
1355 frame.colorimetry = HDMI_COLORIMETRY_ITU_709;
1356 frame.extended_colorimetry =
1357 HDMI_EXTENDED_COLORIMETRY_XV_YCC_709;
1358 break;
1359 default: /* Carries no data */
1360 frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
1361 frame.extended_colorimetry =
1362 HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
1363 break;
1364 }
1365
1366 frame.scan_mode = HDMI_SCAN_MODE_NONE;
1367
1368 /*
1369 * The Designware IP uses a different byte format from standard
1370 * AVI info frames, though generally the bits are in the correct
1371 * bytes.
1372 */
1373
1374 /*
1375 * AVI data byte 1 differences: Colorspace in bits 0,1 rather than 5,6,
1376 * scan info in bits 4,5 rather than 0,1 and active aspect present in
1377 * bit 6 rather than 4.
1378 */
1379 val = (frame.scan_mode & 3) << 4 | (frame.colorspace & 3);
1380 if (frame.active_aspect & 15)
1381 val |= HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT;
1382 if (frame.top_bar || frame.bottom_bar)
1383 val |= HDMI_FC_AVICONF0_BAR_DATA_HORIZ_BAR;
1384 if (frame.left_bar || frame.right_bar)
1385 val |= HDMI_FC_AVICONF0_BAR_DATA_VERT_BAR;
1386 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF0);
1387
1388 /* AVI data byte 2 differences: none */
1389 val = ((frame.colorimetry & 0x3) << 6) |
1390 ((frame.picture_aspect & 0x3) << 4) |
1391 (frame.active_aspect & 0xf);
1392 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF1);
1393
1394 /* AVI data byte 3 differences: none */
1395 val = ((frame.extended_colorimetry & 0x7) << 4) |
1396 ((frame.quantization_range & 0x3) << 2) |
1397 (frame.nups & 0x3);
1398 if (frame.itc)
1399 val |= HDMI_FC_AVICONF2_IT_CONTENT_VALID;
1400 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF2);
1401
1402 /* AVI data byte 4 differences: none */
1403 val = frame.video_code & 0x7f;
1404 hdmi_writeb(hdmi, val, HDMI_FC_AVIVID);
1405
1406 /* AVI Data Byte 5- set up input and output pixel repetition */
1407 val = (((hdmi->hdmi_data.video_mode.mpixelrepetitioninput + 1) <<
1408 HDMI_FC_PRCONF_INCOMING_PR_FACTOR_OFFSET) &
1409 HDMI_FC_PRCONF_INCOMING_PR_FACTOR_MASK) |
1410 ((hdmi->hdmi_data.video_mode.mpixelrepetitionoutput <<
1411 HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_OFFSET) &
1412 HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_MASK);
1413 hdmi_writeb(hdmi, val, HDMI_FC_PRCONF);
1414
1415 /*
1416 * AVI data byte 5 differences: content type in 0,1 rather than 4,5,
1417 * ycc range in bits 2,3 rather than 6,7
1418 */
1419 val = ((frame.ycc_quantization_range & 0x3) << 2) |
1420 (frame.content_type & 0x3);
1421 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF3);
1422
1423 /* AVI Data Bytes 6-13 */
1424 hdmi_writeb(hdmi, frame.top_bar & 0xff, HDMI_FC_AVIETB0);
1425 hdmi_writeb(hdmi, (frame.top_bar >> 8) & 0xff, HDMI_FC_AVIETB1);
1426 hdmi_writeb(hdmi, frame.bottom_bar & 0xff, HDMI_FC_AVISBB0);
1427 hdmi_writeb(hdmi, (frame.bottom_bar >> 8) & 0xff, HDMI_FC_AVISBB1);
1428 hdmi_writeb(hdmi, frame.left_bar & 0xff, HDMI_FC_AVIELB0);
1429 hdmi_writeb(hdmi, (frame.left_bar >> 8) & 0xff, HDMI_FC_AVIELB1);
1430 hdmi_writeb(hdmi, frame.right_bar & 0xff, HDMI_FC_AVISRB0);
1431 hdmi_writeb(hdmi, (frame.right_bar >> 8) & 0xff, HDMI_FC_AVISRB1);
1432 }
1433
1434 static void hdmi_config_vendor_specific_infoframe(struct dw_hdmi *hdmi,
1435 struct drm_display_mode *mode)
1436 {
1437 struct hdmi_vendor_infoframe frame;
1438 u8 buffer[10];
1439 ssize_t err;
1440
1441 err = drm_hdmi_vendor_infoframe_from_display_mode(&frame,
1442 &hdmi->connector,
1443 mode);
1444 if (err < 0)
1445 /*
1446 * Going into that statement does not means vendor infoframe
1447 * fails. It just informed us that vendor infoframe is not
1448 * needed for the selected mode. Only 4k or stereoscopic 3D
1449 * mode requires vendor infoframe. So just simply return.
1450 */
1451 return;
1452
1453 err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
1454 if (err < 0) {
1455 dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n",
1456 err);
1457 return;
1458 }
1459 hdmi_mask_writeb(hdmi, 0, HDMI_FC_DATAUTO0, HDMI_FC_DATAUTO0_VSD_OFFSET,
1460 HDMI_FC_DATAUTO0_VSD_MASK);
1461
1462 /* Set the length of HDMI vendor specific InfoFrame payload */
1463 hdmi_writeb(hdmi, buffer[2], HDMI_FC_VSDSIZE);
1464
1465 /* Set 24bit IEEE Registration Identifier */
1466 hdmi_writeb(hdmi, buffer[4], HDMI_FC_VSDIEEEID0);
1467 hdmi_writeb(hdmi, buffer[5], HDMI_FC_VSDIEEEID1);
1468 hdmi_writeb(hdmi, buffer[6], HDMI_FC_VSDIEEEID2);
1469
1470 /* Set HDMI_Video_Format and HDMI_VIC/3D_Structure */
1471 hdmi_writeb(hdmi, buffer[7], HDMI_FC_VSDPAYLOAD0);
1472 hdmi_writeb(hdmi, buffer[8], HDMI_FC_VSDPAYLOAD1);
1473
1474 if (frame.s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF)
1475 hdmi_writeb(hdmi, buffer[9], HDMI_FC_VSDPAYLOAD2);
1476
1477 /* Packet frame interpolation */
1478 hdmi_writeb(hdmi, 1, HDMI_FC_DATAUTO1);
1479
1480 /* Auto packets per frame and line spacing */
1481 hdmi_writeb(hdmi, 0x11, HDMI_FC_DATAUTO2);
1482
1483 /* Configures the Frame Composer On RDRB mode */
1484 hdmi_mask_writeb(hdmi, 1, HDMI_FC_DATAUTO0, HDMI_FC_DATAUTO0_VSD_OFFSET,
1485 HDMI_FC_DATAUTO0_VSD_MASK);
1486 }
1487
1488 static void hdmi_av_composer(struct dw_hdmi *hdmi,
1489 const struct drm_display_mode *mode)
1490 {
1491 u8 inv_val;
1492 struct hdmi_vmode *vmode = &hdmi->hdmi_data.video_mode;
1493 int hblank, vblank, h_de_hs, v_de_vs, hsync_len, vsync_len;
1494 unsigned int vdisplay;
1495
1496 vmode->mpixelclock = mode->clock * 1000;
1497
1498 dev_dbg(hdmi->dev, "final pixclk = %d\n", vmode->mpixelclock);
1499
1500 /* Set up HDMI_FC_INVIDCONF */
1501 inv_val = (hdmi->hdmi_data.hdcp_enable ?
1502 HDMI_FC_INVIDCONF_HDCP_KEEPOUT_ACTIVE :
1503 HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE);
1504
1505 inv_val |= mode->flags & DRM_MODE_FLAG_PVSYNC ?
1506 HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH :
1507 HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW;
1508
1509 inv_val |= mode->flags & DRM_MODE_FLAG_PHSYNC ?
1510 HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH :
1511 HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW;
1512
1513 inv_val |= (vmode->mdataenablepolarity ?
1514 HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH :
1515 HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW);
1516
1517 if (hdmi->vic == 39)
1518 inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH;
1519 else
1520 inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
1521 HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH :
1522 HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW;
1523
1524 inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ?
1525 HDMI_FC_INVIDCONF_IN_I_P_INTERLACED :
1526 HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE;
1527
1528 inv_val |= hdmi->sink_is_hdmi ?
1529 HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE :
1530 HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE;
1531
1532 hdmi_writeb(hdmi, inv_val, HDMI_FC_INVIDCONF);
1533
1534 vdisplay = mode->vdisplay;
1535 vblank = mode->vtotal - mode->vdisplay;
1536 v_de_vs = mode->vsync_start - mode->vdisplay;
1537 vsync_len = mode->vsync_end - mode->vsync_start;
1538
1539 /*
1540 * When we're setting an interlaced mode, we need
1541 * to adjust the vertical timing to suit.
1542 */
1543 if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
1544 vdisplay /= 2;
1545 vblank /= 2;
1546 v_de_vs /= 2;
1547 vsync_len /= 2;
1548 }
1549
1550 /* Set up horizontal active pixel width */
1551 hdmi_writeb(hdmi, mode->hdisplay >> 8, HDMI_FC_INHACTV1);
1552 hdmi_writeb(hdmi, mode->hdisplay, HDMI_FC_INHACTV0);
1553
1554 /* Set up vertical active lines */
1555 hdmi_writeb(hdmi, vdisplay >> 8, HDMI_FC_INVACTV1);
1556 hdmi_writeb(hdmi, vdisplay, HDMI_FC_INVACTV0);
1557
1558 /* Set up horizontal blanking pixel region width */
1559 hblank = mode->htotal - mode->hdisplay;
1560 hdmi_writeb(hdmi, hblank >> 8, HDMI_FC_INHBLANK1);
1561 hdmi_writeb(hdmi, hblank, HDMI_FC_INHBLANK0);
1562
1563 /* Set up vertical blanking pixel region width */
1564 hdmi_writeb(hdmi, vblank, HDMI_FC_INVBLANK);
1565
1566 /* Set up HSYNC active edge delay width (in pixel clks) */
1567 h_de_hs = mode->hsync_start - mode->hdisplay;
1568 hdmi_writeb(hdmi, h_de_hs >> 8, HDMI_FC_HSYNCINDELAY1);
1569 hdmi_writeb(hdmi, h_de_hs, HDMI_FC_HSYNCINDELAY0);
1570
1571 /* Set up VSYNC active edge delay (in lines) */
1572 hdmi_writeb(hdmi, v_de_vs, HDMI_FC_VSYNCINDELAY);
1573
1574 /* Set up HSYNC active pulse width (in pixel clks) */
1575 hsync_len = mode->hsync_end - mode->hsync_start;
1576 hdmi_writeb(hdmi, hsync_len >> 8, HDMI_FC_HSYNCINWIDTH1);
1577 hdmi_writeb(hdmi, hsync_len, HDMI_FC_HSYNCINWIDTH0);
1578
1579 /* Set up VSYNC active edge delay (in lines) */
1580 hdmi_writeb(hdmi, vsync_len, HDMI_FC_VSYNCINWIDTH);
1581 }
1582
1583 /* HDMI Initialization Step B.4 */
1584 static void dw_hdmi_enable_video_path(struct dw_hdmi *hdmi)
1585 {
1586 /* control period minimum duration */
1587 hdmi_writeb(hdmi, 12, HDMI_FC_CTRLDUR);
1588 hdmi_writeb(hdmi, 32, HDMI_FC_EXCTRLDUR);
1589 hdmi_writeb(hdmi, 1, HDMI_FC_EXCTRLSPAC);
1590
1591 /* Set to fill TMDS data channels */
1592 hdmi_writeb(hdmi, 0x0B, HDMI_FC_CH0PREAM);
1593 hdmi_writeb(hdmi, 0x16, HDMI_FC_CH1PREAM);
1594 hdmi_writeb(hdmi, 0x21, HDMI_FC_CH2PREAM);
1595
1596 /* Enable pixel clock and tmds data path */
1597 hdmi->mc_clkdis |= HDMI_MC_CLKDIS_HDCPCLK_DISABLE |
1598 HDMI_MC_CLKDIS_CSCCLK_DISABLE |
1599 HDMI_MC_CLKDIS_AUDCLK_DISABLE |
1600 HDMI_MC_CLKDIS_PREPCLK_DISABLE |
1601 HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
1602 hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE;
1603 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
1604
1605 hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
1606 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
1607
1608 /* Enable csc path */
1609 if (is_color_space_conversion(hdmi)) {
1610 hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_CSCCLK_DISABLE;
1611 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
1612 }
1613
1614 /* Enable color space conversion if needed */
1615 if (is_color_space_conversion(hdmi))
1616 hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH,
1617 HDMI_MC_FLOWCTRL);
1618 else
1619 hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS,
1620 HDMI_MC_FLOWCTRL);
1621 }
1622
1623 /* Workaround to clear the overflow condition */
1624 static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
1625 {
1626 unsigned int count;
1627 unsigned int i;
1628 u8 val;
1629
1630 /*
1631 * Under some circumstances the Frame Composer arithmetic unit can miss
1632 * an FC register write due to being busy processing the previous one.
1633 * The issue can be worked around by issuing a TMDS software reset and
1634 * then write one of the FC registers several times.
1635 *
1636 * The number of iterations matters and depends on the HDMI TX revision
1637 * (and possibly on the platform). So far only i.MX6Q (v1.30a) and
1638 * i.MX6DL (v1.31a) have been identified as needing the workaround, with
1639 * 4 and 1 iterations respectively.
1640 */
1641
1642 switch (hdmi->version) {
1643 case 0x130a:
1644 count = 4;
1645 break;
1646 case 0x131a:
1647 count = 1;
1648 break;
1649 default:
1650 return;
1651 }
1652
1653 /* TMDS software reset */
1654 hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ);
1655
1656 val = hdmi_readb(hdmi, HDMI_FC_INVIDCONF);
1657 for (i = 0; i < count; i++)
1658 hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF);
1659 }
1660
1661 static void hdmi_enable_overflow_interrupts(struct dw_hdmi *hdmi)
1662 {
1663 hdmi_writeb(hdmi, 0, HDMI_FC_MASK2);
1664 hdmi_writeb(hdmi, 0, HDMI_IH_MUTE_FC_STAT2);
1665 }
1666
1667 static void hdmi_disable_overflow_interrupts(struct dw_hdmi *hdmi)
1668 {
1669 hdmi_writeb(hdmi, HDMI_IH_MUTE_FC_STAT2_OVERFLOW_MASK,
1670 HDMI_IH_MUTE_FC_STAT2);
1671 }
1672
1673 static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
1674 {
1675 int ret;
1676
1677 hdmi_disable_overflow_interrupts(hdmi);
1678
1679 hdmi->vic = drm_match_cea_mode(mode);
1680
1681 if (!hdmi->vic) {
1682 dev_dbg(hdmi->dev, "Non-CEA mode used in HDMI\n");
1683 } else {
1684 dev_dbg(hdmi->dev, "CEA mode used vic=%d\n", hdmi->vic);
1685 }
1686
1687 if ((hdmi->vic == 6) || (hdmi->vic == 7) ||
1688 (hdmi->vic == 21) || (hdmi->vic == 22) ||
1689 (hdmi->vic == 2) || (hdmi->vic == 3) ||
1690 (hdmi->vic == 17) || (hdmi->vic == 18))
1691 hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_601;
1692 else
1693 hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_709;
1694
1695 hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 0;
1696 hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 0;
1697
1698 /* TOFIX: Get input format from plat data or fallback to RGB888 */
1699 if (hdmi->plat_data->input_bus_format)
1700 hdmi->hdmi_data.enc_in_bus_format =
1701 hdmi->plat_data->input_bus_format;
1702 else
1703 hdmi->hdmi_data.enc_in_bus_format = MEDIA_BUS_FMT_RGB888_1X24;
1704
1705 /* TOFIX: Get input encoding from plat data or fallback to none */
1706 if (hdmi->plat_data->input_bus_encoding)
1707 hdmi->hdmi_data.enc_in_encoding =
1708 hdmi->plat_data->input_bus_encoding;
1709 else
1710 hdmi->hdmi_data.enc_in_encoding = V4L2_YCBCR_ENC_DEFAULT;
1711
1712 /* TOFIX: Default to RGB888 output format */
1713 hdmi->hdmi_data.enc_out_bus_format = MEDIA_BUS_FMT_RGB888_1X24;
1714
1715 hdmi->hdmi_data.pix_repet_factor = 0;
1716 hdmi->hdmi_data.hdcp_enable = 0;
1717 hdmi->hdmi_data.video_mode.mdataenablepolarity = true;
1718
1719 /* HDMI Initialization Step B.1 */
1720 hdmi_av_composer(hdmi, mode);
1721
1722 /* HDMI Initializateion Step B.2 */
1723 ret = hdmi->phy.ops->init(hdmi, hdmi->phy.data, &hdmi->previous_mode);
1724 if (ret)
1725 return ret;
1726 hdmi->phy.enabled = true;
1727
1728 /* HDMI Initialization Step B.3 */
1729 dw_hdmi_enable_video_path(hdmi);
1730
1731 if (hdmi->sink_has_audio) {
1732 dev_dbg(hdmi->dev, "sink has audio support\n");
1733
1734 /* HDMI Initialization Step E - Configure audio */
1735 hdmi_clk_regenerator_update_pixel_clock(hdmi);
1736 hdmi_enable_audio_clk(hdmi, true);
1737 }
1738
1739 /* not for DVI mode */
1740 if (hdmi->sink_is_hdmi) {
1741 dev_dbg(hdmi->dev, "%s HDMI mode\n", __func__);
1742
1743 /* HDMI Initialization Step F - Configure AVI InfoFrame */
1744 hdmi_config_AVI(hdmi, mode);
1745 hdmi_config_vendor_specific_infoframe(hdmi, mode);
1746 } else {
1747 dev_dbg(hdmi->dev, "%s DVI mode\n", __func__);
1748 }
1749
1750 hdmi_video_packetize(hdmi);
1751 hdmi_video_csc(hdmi);
1752 hdmi_video_sample(hdmi);
1753 hdmi_tx_hdcp_config(hdmi);
1754
1755 dw_hdmi_clear_overflow(hdmi);
1756 if (hdmi->cable_plugin && hdmi->sink_is_hdmi)
1757 hdmi_enable_overflow_interrupts(hdmi);
1758
1759 return 0;
1760 }
1761
1762 static void dw_hdmi_setup_i2c(struct dw_hdmi *hdmi)
1763 {
1764 hdmi_writeb(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL,
1765 HDMI_PHY_I2CM_INT_ADDR);
1766
1767 hdmi_writeb(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL |
1768 HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL,
1769 HDMI_PHY_I2CM_CTLINT_ADDR);
1770 }
1771
1772 static void initialize_hdmi_ih_mutes(struct dw_hdmi *hdmi)
1773 {
1774 u8 ih_mute;
1775
1776 /*
1777 * Boot up defaults are:
1778 * HDMI_IH_MUTE = 0x03 (disabled)
1779 * HDMI_IH_MUTE_* = 0x00 (enabled)
1780 *
1781 * Disable top level interrupt bits in HDMI block
1782 */
1783 ih_mute = hdmi_readb(hdmi, HDMI_IH_MUTE) |
1784 HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
1785 HDMI_IH_MUTE_MUTE_ALL_INTERRUPT;
1786
1787 hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);
1788
1789 /* by default mask all interrupts */
1790 hdmi_writeb(hdmi, 0xff, HDMI_VP_MASK);
1791 hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK0);
1792 hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK1);
1793 hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK2);
1794 hdmi_writeb(hdmi, 0xff, HDMI_PHY_MASK0);
1795 hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_INT_ADDR);
1796 hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_CTLINT_ADDR);
1797 hdmi_writeb(hdmi, 0xff, HDMI_AUD_INT);
1798 hdmi_writeb(hdmi, 0xff, HDMI_AUD_SPDIFINT);
1799 hdmi_writeb(hdmi, 0xff, HDMI_AUD_HBR_MASK);
1800 hdmi_writeb(hdmi, 0xff, HDMI_GP_MASK);
1801 hdmi_writeb(hdmi, 0xff, HDMI_A_APIINTMSK);
1802 hdmi_writeb(hdmi, 0xff, HDMI_I2CM_INT);
1803 hdmi_writeb(hdmi, 0xff, HDMI_I2CM_CTLINT);
1804
1805 /* Disable interrupts in the IH_MUTE_* registers */
1806 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT0);
1807 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT1);
1808 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT2);
1809 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AS_STAT0);
1810 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_PHY_STAT0);
1811 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CM_STAT0);
1812 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_CEC_STAT0);
1813 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_VP_STAT0);
1814 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CMPHY_STAT0);
1815 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AHBDMAAUD_STAT0);
1816
1817 /* Enable top level interrupt bits in HDMI block */
1818 ih_mute &= ~(HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
1819 HDMI_IH_MUTE_MUTE_ALL_INTERRUPT);
1820 hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE);
1821 }
1822
1823 static void dw_hdmi_poweron(struct dw_hdmi *hdmi)
1824 {
1825 hdmi->bridge_is_on = true;
1826 dw_hdmi_setup(hdmi, &hdmi->previous_mode);
1827 }
1828
1829 static void dw_hdmi_poweroff(struct dw_hdmi *hdmi)
1830 {
1831 if (hdmi->phy.enabled) {
1832 hdmi->phy.ops->disable(hdmi, hdmi->phy.data);
1833 hdmi->phy.enabled = false;
1834 }
1835
1836 hdmi->bridge_is_on = false;
1837 }
1838
1839 static void dw_hdmi_update_power(struct dw_hdmi *hdmi)
1840 {
1841 int force = hdmi->force;
1842
1843 if (hdmi->disabled) {
1844 force = DRM_FORCE_OFF;
1845 } else if (force == DRM_FORCE_UNSPECIFIED) {
1846 if (hdmi->rxsense)
1847 force = DRM_FORCE_ON;
1848 else
1849 force = DRM_FORCE_OFF;
1850 }
1851
1852 if (force == DRM_FORCE_OFF) {
1853 if (hdmi->bridge_is_on)
1854 dw_hdmi_poweroff(hdmi);
1855 } else {
1856 if (!hdmi->bridge_is_on)
1857 dw_hdmi_poweron(hdmi);
1858 }
1859 }
1860
1861 /*
1862 * Adjust the detection of RXSENSE according to whether we have a forced
1863 * connection mode enabled, or whether we have been disabled. There is
1864 * no point processing RXSENSE interrupts if we have a forced connection
1865 * state, or DRM has us disabled.
1866 *
1867 * We also disable rxsense interrupts when we think we're disconnected
1868 * to avoid floating TDMS signals giving false rxsense interrupts.
1869 *
1870 * Note: we still need to listen for HPD interrupts even when DRM has us
1871 * disabled so that we can detect a connect event.
1872 */
1873 static void dw_hdmi_update_phy_mask(struct dw_hdmi *hdmi)
1874 {
1875 if (hdmi->phy.ops->update_hpd)
1876 hdmi->phy.ops->update_hpd(hdmi, hdmi->phy.data,
1877 hdmi->force, hdmi->disabled,
1878 hdmi->rxsense);
1879 }
1880
1881 static enum drm_connector_status
1882 dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
1883 {
1884 struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
1885 connector);
1886
1887 mutex_lock(&hdmi->mutex);
1888 hdmi->force = DRM_FORCE_UNSPECIFIED;
1889 dw_hdmi_update_power(hdmi);
1890 dw_hdmi_update_phy_mask(hdmi);
1891 mutex_unlock(&hdmi->mutex);
1892
1893 return hdmi->phy.ops->read_hpd(hdmi, hdmi->phy.data);
1894 }
1895
1896 static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
1897 {
1898 struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
1899 connector);
1900 struct edid *edid;
1901 int ret = 0;
1902
1903 if (!hdmi->ddc)
1904 return 0;
1905
1906 edid = drm_get_edid(connector, hdmi->ddc);
1907 if (edid) {
1908 dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n",
1909 edid->width_cm, edid->height_cm);
1910
1911 hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
1912 hdmi->sink_has_audio = drm_detect_monitor_audio(edid);
1913 drm_mode_connector_update_edid_property(connector, edid);
1914 cec_notifier_set_phys_addr_from_edid(hdmi->cec_notifier, edid);
1915 ret = drm_add_edid_modes(connector, edid);
1916 kfree(edid);
1917 } else {
1918 dev_dbg(hdmi->dev, "failed to get edid\n");
1919 }
1920
1921 return ret;
1922 }
1923
1924 static void dw_hdmi_connector_force(struct drm_connector *connector)
1925 {
1926 struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
1927 connector);
1928
1929 mutex_lock(&hdmi->mutex);
1930 hdmi->force = connector->force;
1931 dw_hdmi_update_power(hdmi);
1932 dw_hdmi_update_phy_mask(hdmi);
1933 mutex_unlock(&hdmi->mutex);
1934 }
1935
1936 static const struct drm_connector_funcs dw_hdmi_connector_funcs = {
1937 .fill_modes = drm_helper_probe_single_connector_modes,
1938 .detect = dw_hdmi_connector_detect,
1939 .destroy = drm_connector_cleanup,
1940 .force = dw_hdmi_connector_force,
1941 .reset = drm_atomic_helper_connector_reset,
1942 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1943 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1944 };
1945
1946 static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = {
1947 .get_modes = dw_hdmi_connector_get_modes,
1948 .best_encoder = drm_atomic_helper_best_encoder,
1949 };
1950
1951 static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
1952 {
1953 struct dw_hdmi *hdmi = bridge->driver_private;
1954 struct drm_encoder *encoder = bridge->encoder;
1955 struct drm_connector *connector = &hdmi->connector;
1956
1957 connector->interlace_allowed = 1;
1958 connector->polled = DRM_CONNECTOR_POLL_HPD;
1959
1960 drm_connector_helper_add(connector, &dw_hdmi_connector_helper_funcs);
1961
1962 drm_connector_init(bridge->dev, connector, &dw_hdmi_connector_funcs,
1963 DRM_MODE_CONNECTOR_HDMIA);
1964
1965 drm_mode_connector_attach_encoder(connector, encoder);
1966
1967 return 0;
1968 }
1969
1970 static enum drm_mode_status
1971 dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
1972 const struct drm_display_mode *mode)
1973 {
1974 struct dw_hdmi *hdmi = bridge->driver_private;
1975 struct drm_connector *connector = &hdmi->connector;
1976 enum drm_mode_status mode_status = MODE_OK;
1977
1978 /* We don't support double-clocked modes */
1979 if (mode->flags & DRM_MODE_FLAG_DBLCLK)
1980 return MODE_BAD;
1981
1982 if (hdmi->plat_data->mode_valid)
1983 mode_status = hdmi->plat_data->mode_valid(connector, mode);
1984
1985 return mode_status;
1986 }
1987
1988 static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge,
1989 struct drm_display_mode *orig_mode,
1990 struct drm_display_mode *mode)
1991 {
1992 struct dw_hdmi *hdmi = bridge->driver_private;
1993
1994 mutex_lock(&hdmi->mutex);
1995
1996 /* Store the display mode for plugin/DKMS poweron events */
1997 memcpy(&hdmi->previous_mode, mode, sizeof(hdmi->previous_mode));
1998
1999 mutex_unlock(&hdmi->mutex);
2000 }
2001
2002 static void dw_hdmi_bridge_disable(struct drm_bridge *bridge)
2003 {
2004 struct dw_hdmi *hdmi = bridge->driver_private;
2005
2006 mutex_lock(&hdmi->mutex);
2007 hdmi->disabled = true;
2008 dw_hdmi_update_power(hdmi);
2009 dw_hdmi_update_phy_mask(hdmi);
2010 mutex_unlock(&hdmi->mutex);
2011 }
2012
2013 static void dw_hdmi_bridge_enable(struct drm_bridge *bridge)
2014 {
2015 struct dw_hdmi *hdmi = bridge->driver_private;
2016
2017 mutex_lock(&hdmi->mutex);
2018 hdmi->disabled = false;
2019 dw_hdmi_update_power(hdmi);
2020 dw_hdmi_update_phy_mask(hdmi);
2021 mutex_unlock(&hdmi->mutex);
2022 }
2023
2024 static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = {
2025 .attach = dw_hdmi_bridge_attach,
2026 .enable = dw_hdmi_bridge_enable,
2027 .disable = dw_hdmi_bridge_disable,
2028 .mode_set = dw_hdmi_bridge_mode_set,
2029 .mode_valid = dw_hdmi_bridge_mode_valid,
2030 };
2031
2032 static irqreturn_t dw_hdmi_i2c_irq(struct dw_hdmi *hdmi)
2033 {
2034 struct dw_hdmi_i2c *i2c = hdmi->i2c;
2035 unsigned int stat;
2036
2037 stat = hdmi_readb(hdmi, HDMI_IH_I2CM_STAT0);
2038 if (!stat)
2039 return IRQ_NONE;
2040
2041 hdmi_writeb(hdmi, stat, HDMI_IH_I2CM_STAT0);
2042
2043 i2c->stat = stat;
2044
2045 complete(&i2c->cmp);
2046
2047 return IRQ_HANDLED;
2048 }
2049
2050 static irqreturn_t dw_hdmi_hardirq(int irq, void *dev_id)
2051 {
2052 struct dw_hdmi *hdmi = dev_id;
2053 u8 intr_stat;
2054 irqreturn_t ret = IRQ_NONE;
2055
2056 if (hdmi->i2c)
2057 ret = dw_hdmi_i2c_irq(hdmi);
2058
2059 intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0);
2060 if (intr_stat) {
2061 hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
2062 return IRQ_WAKE_THREAD;
2063 }
2064
2065 return ret;
2066 }
2067
2068 void __dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense)
2069 {
2070 mutex_lock(&hdmi->mutex);
2071
2072 if (!hdmi->force) {
2073 /*
2074 * If the RX sense status indicates we're disconnected,
2075 * clear the software rxsense status.
2076 */
2077 if (!rx_sense)
2078 hdmi->rxsense = false;
2079
2080 /*
2081 * Only set the software rxsense status when both
2082 * rxsense and hpd indicates we're connected.
2083 * This avoids what seems to be bad behaviour in
2084 * at least iMX6S versions of the phy.
2085 */
2086 if (hpd)
2087 hdmi->rxsense = true;
2088
2089 dw_hdmi_update_power(hdmi);
2090 dw_hdmi_update_phy_mask(hdmi);
2091 }
2092 mutex_unlock(&hdmi->mutex);
2093 }
2094
2095 void dw_hdmi_setup_rx_sense(struct device *dev, bool hpd, bool rx_sense)
2096 {
2097 struct dw_hdmi *hdmi = dev_get_drvdata(dev);
2098
2099 __dw_hdmi_setup_rx_sense(hdmi, hpd, rx_sense);
2100 }
2101 EXPORT_SYMBOL_GPL(dw_hdmi_setup_rx_sense);
2102
2103 static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
2104 {
2105 struct dw_hdmi *hdmi = dev_id;
2106 u8 intr_stat, phy_int_pol, phy_pol_mask, phy_stat;
2107
2108 intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0);
2109 phy_int_pol = hdmi_readb(hdmi, HDMI_PHY_POL0);
2110 phy_stat = hdmi_readb(hdmi, HDMI_PHY_STAT0);
2111
2112 phy_pol_mask = 0;
2113 if (intr_stat & HDMI_IH_PHY_STAT0_HPD)
2114 phy_pol_mask |= HDMI_PHY_HPD;
2115 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE0)
2116 phy_pol_mask |= HDMI_PHY_RX_SENSE0;
2117 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE1)
2118 phy_pol_mask |= HDMI_PHY_RX_SENSE1;
2119 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE2)
2120 phy_pol_mask |= HDMI_PHY_RX_SENSE2;
2121 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE3)
2122 phy_pol_mask |= HDMI_PHY_RX_SENSE3;
2123
2124 if (phy_pol_mask)
2125 hdmi_modb(hdmi, ~phy_int_pol, phy_pol_mask, HDMI_PHY_POL0);
2126
2127 /*
2128 * RX sense tells us whether the TDMS transmitters are detecting
2129 * load - in other words, there's something listening on the
2130 * other end of the link. Use this to decide whether we should
2131 * power on the phy as HPD may be toggled by the sink to merely
2132 * ask the source to re-read the EDID.
2133 */
2134 if (intr_stat &
2135 (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) {
2136 __dw_hdmi_setup_rx_sense(hdmi,
2137 phy_stat & HDMI_PHY_HPD,
2138 phy_stat & HDMI_PHY_RX_SENSE);
2139
2140 if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0)
2141 cec_notifier_set_phys_addr(hdmi->cec_notifier,
2142 CEC_PHYS_ADDR_INVALID);
2143 }
2144
2145 if (intr_stat & HDMI_IH_PHY_STAT0_HPD) {
2146 dev_dbg(hdmi->dev, "EVENT=%s\n",
2147 phy_int_pol & HDMI_PHY_HPD ? "plugin" : "plugout");
2148 if (hdmi->bridge.dev)
2149 drm_helper_hpd_irq_event(hdmi->bridge.dev);
2150 }
2151
2152 hdmi_writeb(hdmi, intr_stat, HDMI_IH_PHY_STAT0);
2153 hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE),
2154 HDMI_IH_MUTE_PHY_STAT0);
2155
2156 return IRQ_HANDLED;
2157 }
2158
2159 static const struct dw_hdmi_phy_data dw_hdmi_phys[] = {
2160 {
2161 .type = DW_HDMI_PHY_DWC_HDMI_TX_PHY,
2162 .name = "DWC HDMI TX PHY",
2163 .gen = 1,
2164 }, {
2165 .type = DW_HDMI_PHY_DWC_MHL_PHY_HEAC,
2166 .name = "DWC MHL PHY + HEAC PHY",
2167 .gen = 2,
2168 .has_svsret = true,
2169 .configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
2170 }, {
2171 .type = DW_HDMI_PHY_DWC_MHL_PHY,
2172 .name = "DWC MHL PHY",
2173 .gen = 2,
2174 .has_svsret = true,
2175 .configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
2176 }, {
2177 .type = DW_HDMI_PHY_DWC_HDMI_3D_TX_PHY_HEAC,
2178 .name = "DWC HDMI 3D TX PHY + HEAC PHY",
2179 .gen = 2,
2180 .configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
2181 }, {
2182 .type = DW_HDMI_PHY_DWC_HDMI_3D_TX_PHY,
2183 .name = "DWC HDMI 3D TX PHY",
2184 .gen = 2,
2185 .configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
2186 }, {
2187 .type = DW_HDMI_PHY_DWC_HDMI20_TX_PHY,
2188 .name = "DWC HDMI 2.0 TX PHY",
2189 .gen = 2,
2190 .has_svsret = true,
2191 .configure = hdmi_phy_configure_dwc_hdmi_3d_tx,
2192 }, {
2193 .type = DW_HDMI_PHY_VENDOR_PHY,
2194 .name = "Vendor PHY",
2195 }
2196 };
2197
2198 static int dw_hdmi_detect_phy(struct dw_hdmi *hdmi)
2199 {
2200 unsigned int i;
2201 u8 phy_type;
2202
2203 phy_type = hdmi_readb(hdmi, HDMI_CONFIG2_ID);
2204
2205 if (phy_type == DW_HDMI_PHY_VENDOR_PHY) {
2206 /* Vendor PHYs require support from the glue layer. */
2207 if (!hdmi->plat_data->phy_ops || !hdmi->plat_data->phy_name) {
2208 dev_err(hdmi->dev,
2209 "Vendor HDMI PHY not supported by glue layer\n");
2210 return -ENODEV;
2211 }
2212
2213 hdmi->phy.ops = hdmi->plat_data->phy_ops;
2214 hdmi->phy.data = hdmi->plat_data->phy_data;
2215 hdmi->phy.name = hdmi->plat_data->phy_name;
2216 return 0;
2217 }
2218
2219 /* Synopsys PHYs are handled internally. */
2220 for (i = 0; i < ARRAY_SIZE(dw_hdmi_phys); ++i) {
2221 if (dw_hdmi_phys[i].type == phy_type) {
2222 hdmi->phy.ops = &dw_hdmi_synopsys_phy_ops;
2223 hdmi->phy.name = dw_hdmi_phys[i].name;
2224 hdmi->phy.data = (void *)&dw_hdmi_phys[i];
2225
2226 if (!dw_hdmi_phys[i].configure &&
2227 !hdmi->plat_data->configure_phy) {
2228 dev_err(hdmi->dev, "%s requires platform support\n",
2229 hdmi->phy.name);
2230 return -ENODEV;
2231 }
2232
2233 return 0;
2234 }
2235 }
2236
2237 dev_err(hdmi->dev, "Unsupported HDMI PHY type (%02x)\n", phy_type);
2238 return -ENODEV;
2239 }
2240
2241 static void dw_hdmi_cec_enable(struct dw_hdmi *hdmi)
2242 {
2243 mutex_lock(&hdmi->mutex);
2244 hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
2245 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
2246 mutex_unlock(&hdmi->mutex);
2247 }
2248
2249 static void dw_hdmi_cec_disable(struct dw_hdmi *hdmi)
2250 {
2251 mutex_lock(&hdmi->mutex);
2252 hdmi->mc_clkdis |= HDMI_MC_CLKDIS_CECCLK_DISABLE;
2253 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS);
2254 mutex_unlock(&hdmi->mutex);
2255 }
2256
2257 static const struct dw_hdmi_cec_ops dw_hdmi_cec_ops = {
2258 .write = hdmi_writeb,
2259 .read = hdmi_readb,
2260 .enable = dw_hdmi_cec_enable,
2261 .disable = dw_hdmi_cec_disable,
2262 };
2263
2264 static const struct regmap_config hdmi_regmap_8bit_config = {
2265 .reg_bits = 32,
2266 .val_bits = 8,
2267 .reg_stride = 1,
2268 .max_register = HDMI_I2CM_FS_SCL_LCNT_0_ADDR,
2269 };
2270
2271 static const struct regmap_config hdmi_regmap_32bit_config = {
2272 .reg_bits = 32,
2273 .val_bits = 32,
2274 .reg_stride = 4,
2275 .max_register = HDMI_I2CM_FS_SCL_LCNT_0_ADDR << 2,
2276 };
2277
2278 static struct dw_hdmi *
2279 __dw_hdmi_probe(struct platform_device *pdev,
2280 const struct dw_hdmi_plat_data *plat_data)
2281 {
2282 struct device *dev = &pdev->dev;
2283 struct device_node *np = dev->of_node;
2284 struct platform_device_info pdevinfo;
2285 struct device_node *ddc_node;
2286 struct dw_hdmi_cec_data cec;
2287 struct dw_hdmi *hdmi;
2288 struct resource *iores = NULL;
2289 int irq;
2290 int ret;
2291 u32 val = 1;
2292 u8 prod_id0;
2293 u8 prod_id1;
2294 u8 config0;
2295 u8 config3;
2296
2297 hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
2298 if (!hdmi)
2299 return ERR_PTR(-ENOMEM);
2300
2301 hdmi->plat_data = plat_data;
2302 hdmi->dev = dev;
2303 hdmi->sample_rate = 48000;
2304 hdmi->disabled = true;
2305 hdmi->rxsense = true;
2306 hdmi->phy_mask = (u8)~(HDMI_PHY_HPD | HDMI_PHY_RX_SENSE);
2307 hdmi->mc_clkdis = 0x7f;
2308
2309 mutex_init(&hdmi->mutex);
2310 mutex_init(&hdmi->audio_mutex);
2311 spin_lock_init(&hdmi->audio_lock);
2312
2313 ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
2314 if (ddc_node) {
2315 hdmi->ddc = of_get_i2c_adapter_by_node(ddc_node);
2316 of_node_put(ddc_node);
2317 if (!hdmi->ddc) {
2318 dev_dbg(hdmi->dev, "failed to read ddc node\n");
2319 return ERR_PTR(-EPROBE_DEFER);
2320 }
2321
2322 } else {
2323 dev_dbg(hdmi->dev, "no ddc property found\n");
2324 }
2325
2326 if (!plat_data->regm) {
2327 const struct regmap_config *reg_config;
2328
2329 of_property_read_u32(np, "reg-io-width", &val);
2330 switch (val) {
2331 case 4:
2332 reg_config = &hdmi_regmap_32bit_config;
2333 hdmi->reg_shift = 2;
2334 break;
2335 case 1:
2336 reg_config = &hdmi_regmap_8bit_config;
2337 break;
2338 default:
2339 dev_err(dev, "reg-io-width must be 1 or 4\n");
2340 return ERR_PTR(-EINVAL);
2341 }
2342
2343 iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2344 hdmi->regs = devm_ioremap_resource(dev, iores);
2345 if (IS_ERR(hdmi->regs)) {
2346 ret = PTR_ERR(hdmi->regs);
2347 goto err_res;
2348 }
2349
2350 hdmi->regm = devm_regmap_init_mmio(dev, hdmi->regs, reg_config);
2351 if (IS_ERR(hdmi->regm)) {
2352 dev_err(dev, "Failed to configure regmap\n");
2353 ret = PTR_ERR(hdmi->regm);
2354 goto err_res;
2355 }
2356 } else {
2357 hdmi->regm = plat_data->regm;
2358 }
2359
2360 hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr");
2361 if (IS_ERR(hdmi->isfr_clk)) {
2362 ret = PTR_ERR(hdmi->isfr_clk);
2363 dev_err(hdmi->dev, "Unable to get HDMI isfr clk: %d\n", ret);
2364 goto err_res;
2365 }
2366
2367 ret = clk_prepare_enable(hdmi->isfr_clk);
2368 if (ret) {
2369 dev_err(hdmi->dev, "Cannot enable HDMI isfr clock: %d\n", ret);
2370 goto err_res;
2371 }
2372
2373 hdmi->iahb_clk = devm_clk_get(hdmi->dev, "iahb");
2374 if (IS_ERR(hdmi->iahb_clk)) {
2375 ret = PTR_ERR(hdmi->iahb_clk);
2376 dev_err(hdmi->dev, "Unable to get HDMI iahb clk: %d\n", ret);
2377 goto err_isfr;
2378 }
2379
2380 ret = clk_prepare_enable(hdmi->iahb_clk);
2381 if (ret) {
2382 dev_err(hdmi->dev, "Cannot enable HDMI iahb clock: %d\n", ret);
2383 goto err_isfr;
2384 }
2385
2386 hdmi->cec_clk = devm_clk_get(hdmi->dev, "cec");
2387 if (PTR_ERR(hdmi->cec_clk) == -ENOENT) {
2388 hdmi->cec_clk = NULL;
2389 } else if (IS_ERR(hdmi->cec_clk)) {
2390 ret = PTR_ERR(hdmi->cec_clk);
2391 if (ret != -EPROBE_DEFER)
2392 dev_err(hdmi->dev, "Cannot get HDMI cec clock: %d\n",
2393 ret);
2394
2395 hdmi->cec_clk = NULL;
2396 goto err_iahb;
2397 } else {
2398 ret = clk_prepare_enable(hdmi->cec_clk);
2399 if (ret) {
2400 dev_err(hdmi->dev, "Cannot enable HDMI cec clock: %d\n",
2401 ret);
2402 goto err_iahb;
2403 }
2404 }
2405
2406 /* Product and revision IDs */
2407 hdmi->version = (hdmi_readb(hdmi, HDMI_DESIGN_ID) << 8)
2408 | (hdmi_readb(hdmi, HDMI_REVISION_ID) << 0);
2409 prod_id0 = hdmi_readb(hdmi, HDMI_PRODUCT_ID0);
2410 prod_id1 = hdmi_readb(hdmi, HDMI_PRODUCT_ID1);
2411
2412 if (prod_id0 != HDMI_PRODUCT_ID0_HDMI_TX ||
2413 (prod_id1 & ~HDMI_PRODUCT_ID1_HDCP) != HDMI_PRODUCT_ID1_HDMI_TX) {
2414 dev_err(dev, "Unsupported HDMI controller (%04x:%02x:%02x)\n",
2415 hdmi->version, prod_id0, prod_id1);
2416 ret = -ENODEV;
2417 goto err_iahb;
2418 }
2419
2420 ret = dw_hdmi_detect_phy(hdmi);
2421 if (ret < 0)
2422 goto err_iahb;
2423
2424 dev_info(dev, "Detected HDMI TX controller v%x.%03x %s HDCP (%s)\n",
2425 hdmi->version >> 12, hdmi->version & 0xfff,
2426 prod_id1 & HDMI_PRODUCT_ID1_HDCP ? "with" : "without",
2427 hdmi->phy.name);
2428
2429 initialize_hdmi_ih_mutes(hdmi);
2430
2431 irq = platform_get_irq(pdev, 0);
2432 if (irq < 0) {
2433 ret = irq;
2434 goto err_iahb;
2435 }
2436
2437 ret = devm_request_threaded_irq(dev, irq, dw_hdmi_hardirq,
2438 dw_hdmi_irq, IRQF_SHARED,
2439 dev_name(dev), hdmi);
2440 if (ret)
2441 goto err_iahb;
2442
2443 hdmi->cec_notifier = cec_notifier_get(dev);
2444 if (!hdmi->cec_notifier) {
2445 ret = -ENOMEM;
2446 goto err_iahb;
2447 }
2448
2449 /*
2450 * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
2451 * N and cts values before enabling phy
2452 */
2453 hdmi_init_clk_regenerator(hdmi);
2454
2455 /* If DDC bus is not specified, try to register HDMI I2C bus */
2456 if (!hdmi->ddc) {
2457 hdmi->ddc = dw_hdmi_i2c_adapter(hdmi);
2458 if (IS_ERR(hdmi->ddc))
2459 hdmi->ddc = NULL;
2460 }
2461
2462 hdmi->bridge.driver_private = hdmi;
2463 hdmi->bridge.funcs = &dw_hdmi_bridge_funcs;
2464 #ifdef CONFIG_OF
2465 hdmi->bridge.of_node = pdev->dev.of_node;
2466 #endif
2467
2468 dw_hdmi_setup_i2c(hdmi);
2469 if (hdmi->phy.ops->setup_hpd)
2470 hdmi->phy.ops->setup_hpd(hdmi, hdmi->phy.data);
2471
2472 memset(&pdevinfo, 0, sizeof(pdevinfo));
2473 pdevinfo.parent = dev;
2474 pdevinfo.id = PLATFORM_DEVID_AUTO;
2475
2476 config0 = hdmi_readb(hdmi, HDMI_CONFIG0_ID);
2477 config3 = hdmi_readb(hdmi, HDMI_CONFIG3_ID);
2478
2479 if (iores && config3 & HDMI_CONFIG3_AHBAUDDMA) {
2480 struct dw_hdmi_audio_data audio;
2481
2482 audio.phys = iores->start;
2483 audio.base = hdmi->regs;
2484 audio.irq = irq;
2485 audio.hdmi = hdmi;
2486 audio.eld = hdmi->connector.eld;
2487 hdmi->enable_audio = dw_hdmi_ahb_audio_enable;
2488 hdmi->disable_audio = dw_hdmi_ahb_audio_disable;
2489
2490 pdevinfo.name = "dw-hdmi-ahb-audio";
2491 pdevinfo.data = &audio;
2492 pdevinfo.size_data = sizeof(audio);
2493 pdevinfo.dma_mask = DMA_BIT_MASK(32);
2494 hdmi->audio = platform_device_register_full(&pdevinfo);
2495 } else if (config0 & HDMI_CONFIG0_I2S) {
2496 struct dw_hdmi_i2s_audio_data audio;
2497
2498 audio.hdmi = hdmi;
2499 audio.write = hdmi_writeb;
2500 audio.read = hdmi_readb;
2501 hdmi->enable_audio = dw_hdmi_i2s_audio_enable;
2502 hdmi->disable_audio = dw_hdmi_i2s_audio_disable;
2503
2504 pdevinfo.name = "dw-hdmi-i2s-audio";
2505 pdevinfo.data = &audio;
2506 pdevinfo.size_data = sizeof(audio);
2507 pdevinfo.dma_mask = DMA_BIT_MASK(32);
2508 hdmi->audio = platform_device_register_full(&pdevinfo);
2509 }
2510
2511 if (config0 & HDMI_CONFIG0_CEC) {
2512 cec.hdmi = hdmi;
2513 cec.ops = &dw_hdmi_cec_ops;
2514 cec.irq = irq;
2515
2516 pdevinfo.name = "dw-hdmi-cec";
2517 pdevinfo.data = &cec;
2518 pdevinfo.size_data = sizeof(cec);
2519 pdevinfo.dma_mask = 0;
2520
2521 hdmi->cec = platform_device_register_full(&pdevinfo);
2522 }
2523
2524 /* Reset HDMI DDC I2C master controller and mute I2CM interrupts */
2525 if (hdmi->i2c)
2526 dw_hdmi_i2c_init(hdmi);
2527
2528 platform_set_drvdata(pdev, hdmi);
2529
2530 return hdmi;
2531
2532 err_iahb:
2533 if (hdmi->i2c) {
2534 i2c_del_adapter(&hdmi->i2c->adap);
2535 hdmi->ddc = NULL;
2536 }
2537
2538 if (hdmi->cec_notifier)
2539 cec_notifier_put(hdmi->cec_notifier);
2540
2541 clk_disable_unprepare(hdmi->iahb_clk);
2542 if (hdmi->cec_clk)
2543 clk_disable_unprepare(hdmi->cec_clk);
2544 err_isfr:
2545 clk_disable_unprepare(hdmi->isfr_clk);
2546 err_res:
2547 i2c_put_adapter(hdmi->ddc);
2548
2549 return ERR_PTR(ret);
2550 }
2551
2552 static void __dw_hdmi_remove(struct dw_hdmi *hdmi)
2553 {
2554 if (hdmi->audio && !IS_ERR(hdmi->audio))
2555 platform_device_unregister(hdmi->audio);
2556 if (!IS_ERR(hdmi->cec))
2557 platform_device_unregister(hdmi->cec);
2558
2559 /* Disable all interrupts */
2560 hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
2561
2562 if (hdmi->cec_notifier)
2563 cec_notifier_put(hdmi->cec_notifier);
2564
2565 clk_disable_unprepare(hdmi->iahb_clk);
2566 clk_disable_unprepare(hdmi->isfr_clk);
2567 if (hdmi->cec_clk)
2568 clk_disable_unprepare(hdmi->cec_clk);
2569
2570 if (hdmi->i2c)
2571 i2c_del_adapter(&hdmi->i2c->adap);
2572 else
2573 i2c_put_adapter(hdmi->ddc);
2574 }
2575
2576 /* -----------------------------------------------------------------------------
2577 * Probe/remove API, used from platforms based on the DRM bridge API.
2578 */
2579 int dw_hdmi_probe(struct platform_device *pdev,
2580 const struct dw_hdmi_plat_data *plat_data)
2581 {
2582 struct dw_hdmi *hdmi;
2583
2584 hdmi = __dw_hdmi_probe(pdev, plat_data);
2585 if (IS_ERR(hdmi))
2586 return PTR_ERR(hdmi);
2587
2588 drm_bridge_add(&hdmi->bridge);
2589
2590 return 0;
2591 }
2592 EXPORT_SYMBOL_GPL(dw_hdmi_probe);
2593
2594 void dw_hdmi_remove(struct platform_device *pdev)
2595 {
2596 struct dw_hdmi *hdmi = platform_get_drvdata(pdev);
2597
2598 drm_bridge_remove(&hdmi->bridge);
2599
2600 __dw_hdmi_remove(hdmi);
2601 }
2602 EXPORT_SYMBOL_GPL(dw_hdmi_remove);
2603
2604 /* -----------------------------------------------------------------------------
2605 * Bind/unbind API, used from platforms based on the component framework.
2606 */
2607 int dw_hdmi_bind(struct platform_device *pdev, struct drm_encoder *encoder,
2608 const struct dw_hdmi_plat_data *plat_data)
2609 {
2610 struct dw_hdmi *hdmi;
2611 int ret;
2612
2613 hdmi = __dw_hdmi_probe(pdev, plat_data);
2614 if (IS_ERR(hdmi))
2615 return PTR_ERR(hdmi);
2616
2617 ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL);
2618 if (ret) {
2619 dw_hdmi_remove(pdev);
2620 DRM_ERROR("Failed to initialize bridge with drm\n");
2621 return ret;
2622 }
2623
2624 return 0;
2625 }
2626 EXPORT_SYMBOL_GPL(dw_hdmi_bind);
2627
2628 void dw_hdmi_unbind(struct device *dev)
2629 {
2630 struct dw_hdmi *hdmi = dev_get_drvdata(dev);
2631
2632 __dw_hdmi_remove(hdmi);
2633 }
2634 EXPORT_SYMBOL_GPL(dw_hdmi_unbind);
2635
2636 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
2637 MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>");
2638 MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>");
2639 MODULE_AUTHOR("Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>");
2640 MODULE_DESCRIPTION("DW HDMI transmitter driver");
2641 MODULE_LICENSE("GPL");
2642 MODULE_ALIAS("platform:dw-hdmi");
CRIS linux kernel tree