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Merge branches 'pm-cpufreq' and 'acpi-cppc'
[deliverable/linux.git] / sound / soc / codecs / wm0010.c
1 /*
2 * wm0010.c -- WM0010 DSP Driver
3 *
4 * Copyright 2012 Wolfson Microelectronics PLC.
5 *
6 * Authors: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 * Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
8 * Scott Ling <sl@opensource.wolfsonmicro.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/interrupt.h>
18 #include <linux/irqreturn.h>
19 #include <linux/init.h>
20 #include <linux/spi/spi.h>
21 #include <linux/firmware.h>
22 #include <linux/delay.h>
23 #include <linux/fs.h>
24 #include <linux/miscdevice.h>
25 #include <linux/gpio.h>
26 #include <linux/regulator/consumer.h>
27 #include <linux/mutex.h>
28 #include <linux/workqueue.h>
29
30 #include <sound/soc.h>
31 #include <sound/wm0010.h>
32
33 #define DEVICE_ID_WM0010 10
34
35 /* We only support v1 of the .dfw INFO record */
36 #define INFO_VERSION 1
37
38 enum dfw_cmd {
39 DFW_CMD_FUSE = 0x01,
40 DFW_CMD_CODE_HDR,
41 DFW_CMD_CODE_DATA,
42 DFW_CMD_PLL,
43 DFW_CMD_INFO = 0xff
44 };
45
46 struct dfw_binrec {
47 u8 command;
48 u32 length:24;
49 u32 address;
50 uint8_t data[0];
51 } __packed;
52
53 struct dfw_inforec {
54 u8 info_version;
55 u8 tool_major_version;
56 u8 tool_minor_version;
57 u8 dsp_target;
58 };
59
60 struct dfw_pllrec {
61 u8 command;
62 u32 length:24;
63 u32 address;
64 u32 clkctrl1;
65 u32 clkctrl2;
66 u32 clkctrl3;
67 u32 ldetctrl;
68 u32 uart_div;
69 u32 spi_div;
70 } __packed;
71
72 static struct pll_clock_map {
73 int max_sysclk;
74 int max_pll_spi_speed;
75 u32 pll_clkctrl1;
76 } pll_clock_map[] = { /* Dividers */
77 { 22000000, 26000000, 0x00201f11 }, /* 2,32,2 */
78 { 18000000, 26000000, 0x00203f21 }, /* 2,64,4 */
79 { 14000000, 26000000, 0x00202620 }, /* 1,39,4 */
80 { 10000000, 22000000, 0x00203120 }, /* 1,50,4 */
81 { 6500000, 22000000, 0x00204520 }, /* 1,70,4 */
82 { 5500000, 22000000, 0x00103f10 }, /* 1,64,2 */
83 };
84
85 enum wm0010_state {
86 WM0010_POWER_OFF,
87 WM0010_OUT_OF_RESET,
88 WM0010_BOOTROM,
89 WM0010_STAGE2,
90 WM0010_FIRMWARE,
91 };
92
93 struct wm0010_priv {
94 struct snd_soc_codec *codec;
95
96 struct mutex lock;
97 struct device *dev;
98
99 struct wm0010_pdata pdata;
100
101 int gpio_reset;
102 int gpio_reset_value;
103
104 struct regulator_bulk_data core_supplies[2];
105 struct regulator *dbvdd;
106
107 int sysclk;
108
109 enum wm0010_state state;
110 bool boot_failed;
111 bool ready;
112 bool pll_running;
113 int max_spi_freq;
114 int board_max_spi_speed;
115 u32 pll_clkctrl1;
116
117 spinlock_t irq_lock;
118 int irq;
119
120 struct completion boot_completion;
121 };
122
123 struct wm0010_spi_msg {
124 struct spi_message m;
125 struct spi_transfer t;
126 u8 *tx_buf;
127 u8 *rx_buf;
128 size_t len;
129 };
130
131 static const struct snd_soc_dapm_widget wm0010_dapm_widgets[] = {
132 SND_SOC_DAPM_SUPPLY("CLKIN", SND_SOC_NOPM, 0, 0, NULL, 0),
133 };
134
135 static const struct snd_soc_dapm_route wm0010_dapm_routes[] = {
136 { "SDI2 Capture", NULL, "SDI1 Playback" },
137 { "SDI1 Capture", NULL, "SDI2 Playback" },
138
139 { "SDI1 Capture", NULL, "CLKIN" },
140 { "SDI2 Capture", NULL, "CLKIN" },
141 { "SDI1 Playback", NULL, "CLKIN" },
142 { "SDI2 Playback", NULL, "CLKIN" },
143 };
144
145 static const char *wm0010_state_to_str(enum wm0010_state state)
146 {
147 static const char * const state_to_str[] = {
148 "Power off",
149 "Out of reset",
150 "Boot ROM",
151 "Stage2",
152 "Firmware"
153 };
154
155 if (state < 0 || state >= ARRAY_SIZE(state_to_str))
156 return "null";
157 return state_to_str[state];
158 }
159
160 /* Called with wm0010->lock held */
161 static void wm0010_halt(struct snd_soc_codec *codec)
162 {
163 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
164 unsigned long flags;
165 enum wm0010_state state;
166
167 /* Fetch the wm0010 state */
168 spin_lock_irqsave(&wm0010->irq_lock, flags);
169 state = wm0010->state;
170 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
171
172 switch (state) {
173 case WM0010_POWER_OFF:
174 /* If there's nothing to do, bail out */
175 return;
176 case WM0010_OUT_OF_RESET:
177 case WM0010_BOOTROM:
178 case WM0010_STAGE2:
179 case WM0010_FIRMWARE:
180 /* Remember to put chip back into reset */
181 gpio_set_value_cansleep(wm0010->gpio_reset,
182 wm0010->gpio_reset_value);
183 /* Disable the regulators */
184 regulator_disable(wm0010->dbvdd);
185 regulator_bulk_disable(ARRAY_SIZE(wm0010->core_supplies),
186 wm0010->core_supplies);
187 break;
188 }
189
190 spin_lock_irqsave(&wm0010->irq_lock, flags);
191 wm0010->state = WM0010_POWER_OFF;
192 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
193 }
194
195 struct wm0010_boot_xfer {
196 struct list_head list;
197 struct snd_soc_codec *codec;
198 struct completion *done;
199 struct spi_message m;
200 struct spi_transfer t;
201 };
202
203 /* Called with wm0010->lock held */
204 static void wm0010_mark_boot_failure(struct wm0010_priv *wm0010)
205 {
206 enum wm0010_state state;
207 unsigned long flags;
208
209 spin_lock_irqsave(&wm0010->irq_lock, flags);
210 state = wm0010->state;
211 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
212
213 dev_err(wm0010->dev, "Failed to transition from `%s' state to `%s' state\n",
214 wm0010_state_to_str(state), wm0010_state_to_str(state + 1));
215
216 wm0010->boot_failed = true;
217 }
218
219 static void wm0010_boot_xfer_complete(void *data)
220 {
221 struct wm0010_boot_xfer *xfer = data;
222 struct snd_soc_codec *codec = xfer->codec;
223 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
224 u32 *out32 = xfer->t.rx_buf;
225 int i;
226
227 if (xfer->m.status != 0) {
228 dev_err(codec->dev, "SPI transfer failed: %d\n",
229 xfer->m.status);
230 wm0010_mark_boot_failure(wm0010);
231 if (xfer->done)
232 complete(xfer->done);
233 return;
234 }
235
236 for (i = 0; i < xfer->t.len / 4; i++) {
237 dev_dbg(codec->dev, "%d: %04x\n", i, out32[i]);
238
239 switch (be32_to_cpu(out32[i])) {
240 case 0xe0e0e0e0:
241 dev_err(codec->dev,
242 "%d: ROM error reported in stage 2\n", i);
243 wm0010_mark_boot_failure(wm0010);
244 break;
245
246 case 0x55555555:
247 if (wm0010->state < WM0010_STAGE2)
248 break;
249 dev_err(codec->dev,
250 "%d: ROM bootloader running in stage 2\n", i);
251 wm0010_mark_boot_failure(wm0010);
252 break;
253
254 case 0x0fed0000:
255 dev_dbg(codec->dev, "Stage2 loader running\n");
256 break;
257
258 case 0x0fed0007:
259 dev_dbg(codec->dev, "CODE_HDR packet received\n");
260 break;
261
262 case 0x0fed0008:
263 dev_dbg(codec->dev, "CODE_DATA packet received\n");
264 break;
265
266 case 0x0fed0009:
267 dev_dbg(codec->dev, "Download complete\n");
268 break;
269
270 case 0x0fed000c:
271 dev_dbg(codec->dev, "Application start\n");
272 break;
273
274 case 0x0fed000e:
275 dev_dbg(codec->dev, "PLL packet received\n");
276 wm0010->pll_running = true;
277 break;
278
279 case 0x0fed0025:
280 dev_err(codec->dev, "Device reports image too long\n");
281 wm0010_mark_boot_failure(wm0010);
282 break;
283
284 case 0x0fed002c:
285 dev_err(codec->dev, "Device reports bad SPI packet\n");
286 wm0010_mark_boot_failure(wm0010);
287 break;
288
289 case 0x0fed0031:
290 dev_err(codec->dev, "Device reports SPI read overflow\n");
291 wm0010_mark_boot_failure(wm0010);
292 break;
293
294 case 0x0fed0032:
295 dev_err(codec->dev, "Device reports SPI underclock\n");
296 wm0010_mark_boot_failure(wm0010);
297 break;
298
299 case 0x0fed0033:
300 dev_err(codec->dev, "Device reports bad header packet\n");
301 wm0010_mark_boot_failure(wm0010);
302 break;
303
304 case 0x0fed0034:
305 dev_err(codec->dev, "Device reports invalid packet type\n");
306 wm0010_mark_boot_failure(wm0010);
307 break;
308
309 case 0x0fed0035:
310 dev_err(codec->dev, "Device reports data before header error\n");
311 wm0010_mark_boot_failure(wm0010);
312 break;
313
314 case 0x0fed0038:
315 dev_err(codec->dev, "Device reports invalid PLL packet\n");
316 break;
317
318 case 0x0fed003a:
319 dev_err(codec->dev, "Device reports packet alignment error\n");
320 wm0010_mark_boot_failure(wm0010);
321 break;
322
323 default:
324 dev_err(codec->dev, "Unrecognised return 0x%x\n",
325 be32_to_cpu(out32[i]));
326 wm0010_mark_boot_failure(wm0010);
327 break;
328 }
329
330 if (wm0010->boot_failed)
331 break;
332 }
333
334 if (xfer->done)
335 complete(xfer->done);
336 }
337
338 static void byte_swap_64(u64 *data_in, u64 *data_out, u32 len)
339 {
340 int i;
341
342 for (i = 0; i < len / 8; i++)
343 data_out[i] = cpu_to_be64(le64_to_cpu(data_in[i]));
344 }
345
346 static int wm0010_firmware_load(const char *name, struct snd_soc_codec *codec)
347 {
348 struct spi_device *spi = to_spi_device(codec->dev);
349 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
350 struct list_head xfer_list;
351 struct wm0010_boot_xfer *xfer;
352 int ret;
353 struct completion done;
354 const struct firmware *fw;
355 const struct dfw_binrec *rec;
356 const struct dfw_inforec *inforec;
357 u64 *img;
358 u8 *out, dsp;
359 u32 len, offset;
360
361 INIT_LIST_HEAD(&xfer_list);
362
363 ret = request_firmware(&fw, name, codec->dev);
364 if (ret != 0) {
365 dev_err(codec->dev, "Failed to request application(%s): %d\n",
366 name, ret);
367 return ret;
368 }
369
370 rec = (const struct dfw_binrec *)fw->data;
371 inforec = (const struct dfw_inforec *)rec->data;
372 offset = 0;
373 dsp = inforec->dsp_target;
374 wm0010->boot_failed = false;
375 if (WARN_ON(!list_empty(&xfer_list)))
376 return -EINVAL;
377 init_completion(&done);
378
379 /* First record should be INFO */
380 if (rec->command != DFW_CMD_INFO) {
381 dev_err(codec->dev, "First record not INFO\r\n");
382 ret = -EINVAL;
383 goto abort;
384 }
385
386 if (inforec->info_version != INFO_VERSION) {
387 dev_err(codec->dev,
388 "Unsupported version (%02d) of INFO record\r\n",
389 inforec->info_version);
390 ret = -EINVAL;
391 goto abort;
392 }
393
394 dev_dbg(codec->dev, "Version v%02d INFO record found\r\n",
395 inforec->info_version);
396
397 /* Check it's a DSP file */
398 if (dsp != DEVICE_ID_WM0010) {
399 dev_err(codec->dev, "Not a WM0010 firmware file.\r\n");
400 ret = -EINVAL;
401 goto abort;
402 }
403
404 /* Skip the info record as we don't need to send it */
405 offset += ((rec->length) + 8);
406 rec = (void *)&rec->data[rec->length];
407
408 while (offset < fw->size) {
409 dev_dbg(codec->dev,
410 "Packet: command %d, data length = 0x%x\r\n",
411 rec->command, rec->length);
412 len = rec->length + 8;
413
414 xfer = kzalloc(sizeof(*xfer), GFP_KERNEL);
415 if (!xfer) {
416 ret = -ENOMEM;
417 goto abort;
418 }
419
420 xfer->codec = codec;
421 list_add_tail(&xfer->list, &xfer_list);
422
423 out = kzalloc(len, GFP_KERNEL | GFP_DMA);
424 if (!out) {
425 ret = -ENOMEM;
426 goto abort1;
427 }
428 xfer->t.rx_buf = out;
429
430 img = kzalloc(len, GFP_KERNEL | GFP_DMA);
431 if (!img) {
432 ret = -ENOMEM;
433 goto abort1;
434 }
435 xfer->t.tx_buf = img;
436
437 byte_swap_64((u64 *)&rec->command, img, len);
438
439 spi_message_init(&xfer->m);
440 xfer->m.complete = wm0010_boot_xfer_complete;
441 xfer->m.context = xfer;
442 xfer->t.len = len;
443 xfer->t.bits_per_word = 8;
444
445 if (!wm0010->pll_running) {
446 xfer->t.speed_hz = wm0010->sysclk / 6;
447 } else {
448 xfer->t.speed_hz = wm0010->max_spi_freq;
449
450 if (wm0010->board_max_spi_speed &&
451 (wm0010->board_max_spi_speed < wm0010->max_spi_freq))
452 xfer->t.speed_hz = wm0010->board_max_spi_speed;
453 }
454
455 /* Store max usable spi frequency for later use */
456 wm0010->max_spi_freq = xfer->t.speed_hz;
457
458 spi_message_add_tail(&xfer->t, &xfer->m);
459
460 offset += ((rec->length) + 8);
461 rec = (void *)&rec->data[rec->length];
462
463 if (offset >= fw->size) {
464 dev_dbg(codec->dev, "All transfers scheduled\n");
465 xfer->done = &done;
466 }
467
468 ret = spi_async(spi, &xfer->m);
469 if (ret != 0) {
470 dev_err(codec->dev, "Write failed: %d\n", ret);
471 goto abort1;
472 }
473
474 if (wm0010->boot_failed) {
475 dev_dbg(codec->dev, "Boot fail!\n");
476 ret = -EINVAL;
477 goto abort1;
478 }
479 }
480
481 wait_for_completion(&done);
482
483 ret = 0;
484
485 abort1:
486 while (!list_empty(&xfer_list)) {
487 xfer = list_first_entry(&xfer_list, struct wm0010_boot_xfer,
488 list);
489 kfree(xfer->t.rx_buf);
490 kfree(xfer->t.tx_buf);
491 list_del(&xfer->list);
492 kfree(xfer);
493 }
494
495 abort:
496 release_firmware(fw);
497 return ret;
498 }
499
500 static int wm0010_stage2_load(struct snd_soc_codec *codec)
501 {
502 struct spi_device *spi = to_spi_device(codec->dev);
503 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
504 const struct firmware *fw;
505 struct spi_message m;
506 struct spi_transfer t;
507 u32 *img;
508 u8 *out;
509 int i;
510 int ret = 0;
511
512 ret = request_firmware(&fw, "wm0010_stage2.bin", codec->dev);
513 if (ret != 0) {
514 dev_err(codec->dev, "Failed to request stage2 loader: %d\n",
515 ret);
516 return ret;
517 }
518
519 dev_dbg(codec->dev, "Downloading %zu byte stage 2 loader\n", fw->size);
520
521 /* Copy to local buffer first as vmalloc causes problems for dma */
522 img = kzalloc(fw->size, GFP_KERNEL | GFP_DMA);
523 if (!img) {
524 ret = -ENOMEM;
525 goto abort2;
526 }
527
528 out = kzalloc(fw->size, GFP_KERNEL | GFP_DMA);
529 if (!out) {
530 ret = -ENOMEM;
531 goto abort1;
532 }
533
534 memcpy(img, &fw->data[0], fw->size);
535
536 spi_message_init(&m);
537 memset(&t, 0, sizeof(t));
538 t.rx_buf = out;
539 t.tx_buf = img;
540 t.len = fw->size;
541 t.bits_per_word = 8;
542 t.speed_hz = wm0010->sysclk / 10;
543 spi_message_add_tail(&t, &m);
544
545 dev_dbg(codec->dev, "Starting initial download at %dHz\n",
546 t.speed_hz);
547
548 ret = spi_sync(spi, &m);
549 if (ret != 0) {
550 dev_err(codec->dev, "Initial download failed: %d\n", ret);
551 goto abort;
552 }
553
554 /* Look for errors from the boot ROM */
555 for (i = 0; i < fw->size; i++) {
556 if (out[i] != 0x55) {
557 dev_err(codec->dev, "Boot ROM error: %x in %d\n",
558 out[i], i);
559 wm0010_mark_boot_failure(wm0010);
560 ret = -EBUSY;
561 goto abort;
562 }
563 }
564 abort:
565 kfree(out);
566 abort1:
567 kfree(img);
568 abort2:
569 release_firmware(fw);
570
571 return ret;
572 }
573
574 static int wm0010_boot(struct snd_soc_codec *codec)
575 {
576 struct spi_device *spi = to_spi_device(codec->dev);
577 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
578 unsigned long flags;
579 int ret;
580 struct spi_message m;
581 struct spi_transfer t;
582 struct dfw_pllrec pll_rec;
583 u32 *p, len;
584 u64 *img_swap;
585 u8 *out;
586 int i;
587
588 spin_lock_irqsave(&wm0010->irq_lock, flags);
589 if (wm0010->state != WM0010_POWER_OFF)
590 dev_warn(wm0010->dev, "DSP already powered up!\n");
591 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
592
593 if (wm0010->sysclk > 26000000) {
594 dev_err(codec->dev, "Max DSP clock frequency is 26MHz\n");
595 ret = -ECANCELED;
596 goto err;
597 }
598
599 mutex_lock(&wm0010->lock);
600 wm0010->pll_running = false;
601
602 dev_dbg(codec->dev, "max_spi_freq: %d\n", wm0010->max_spi_freq);
603
604 ret = regulator_bulk_enable(ARRAY_SIZE(wm0010->core_supplies),
605 wm0010->core_supplies);
606 if (ret != 0) {
607 dev_err(&spi->dev, "Failed to enable core supplies: %d\n",
608 ret);
609 mutex_unlock(&wm0010->lock);
610 goto err;
611 }
612
613 ret = regulator_enable(wm0010->dbvdd);
614 if (ret != 0) {
615 dev_err(&spi->dev, "Failed to enable DBVDD: %d\n", ret);
616 goto err_core;
617 }
618
619 /* Release reset */
620 gpio_set_value_cansleep(wm0010->gpio_reset, !wm0010->gpio_reset_value);
621 spin_lock_irqsave(&wm0010->irq_lock, flags);
622 wm0010->state = WM0010_OUT_OF_RESET;
623 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
624
625 if (!wait_for_completion_timeout(&wm0010->boot_completion,
626 msecs_to_jiffies(20)))
627 dev_err(codec->dev, "Failed to get interrupt from DSP\n");
628
629 spin_lock_irqsave(&wm0010->irq_lock, flags);
630 wm0010->state = WM0010_BOOTROM;
631 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
632
633 ret = wm0010_stage2_load(codec);
634 if (ret)
635 goto abort;
636
637 if (!wait_for_completion_timeout(&wm0010->boot_completion,
638 msecs_to_jiffies(20)))
639 dev_err(codec->dev, "Failed to get interrupt from DSP loader.\n");
640
641 spin_lock_irqsave(&wm0010->irq_lock, flags);
642 wm0010->state = WM0010_STAGE2;
643 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
644
645 /* Only initialise PLL if max_spi_freq initialised */
646 if (wm0010->max_spi_freq) {
647
648 /* Initialise a PLL record */
649 memset(&pll_rec, 0, sizeof(pll_rec));
650 pll_rec.command = DFW_CMD_PLL;
651 pll_rec.length = (sizeof(pll_rec) - 8);
652
653 /* On wm0010 only the CLKCTRL1 value is used */
654 pll_rec.clkctrl1 = wm0010->pll_clkctrl1;
655
656 ret = -ENOMEM;
657 len = pll_rec.length + 8;
658 out = kzalloc(len, GFP_KERNEL | GFP_DMA);
659 if (!out) {
660 dev_err(codec->dev,
661 "Failed to allocate RX buffer\n");
662 goto abort;
663 }
664
665 img_swap = kzalloc(len, GFP_KERNEL | GFP_DMA);
666 if (!img_swap)
667 goto abort_out;
668
669 /* We need to re-order for 0010 */
670 byte_swap_64((u64 *)&pll_rec, img_swap, len);
671
672 spi_message_init(&m);
673 memset(&t, 0, sizeof(t));
674 t.rx_buf = out;
675 t.tx_buf = img_swap;
676 t.len = len;
677 t.bits_per_word = 8;
678 t.speed_hz = wm0010->sysclk / 6;
679 spi_message_add_tail(&t, &m);
680
681 ret = spi_sync(spi, &m);
682 if (ret) {
683 dev_err(codec->dev, "First PLL write failed: %d\n", ret);
684 goto abort_swap;
685 }
686
687 /* Use a second send of the message to get the return status */
688 ret = spi_sync(spi, &m);
689 if (ret) {
690 dev_err(codec->dev, "Second PLL write failed: %d\n", ret);
691 goto abort_swap;
692 }
693
694 p = (u32 *)out;
695
696 /* Look for PLL active code from the DSP */
697 for (i = 0; i < len / 4; i++) {
698 if (*p == 0x0e00ed0f) {
699 dev_dbg(codec->dev, "PLL packet received\n");
700 wm0010->pll_running = true;
701 break;
702 }
703 p++;
704 }
705
706 kfree(img_swap);
707 kfree(out);
708 } else
709 dev_dbg(codec->dev, "Not enabling DSP PLL.");
710
711 ret = wm0010_firmware_load("wm0010.dfw", codec);
712
713 if (ret != 0)
714 goto abort;
715
716 spin_lock_irqsave(&wm0010->irq_lock, flags);
717 wm0010->state = WM0010_FIRMWARE;
718 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
719
720 mutex_unlock(&wm0010->lock);
721
722 return 0;
723
724 abort_swap:
725 kfree(img_swap);
726 abort_out:
727 kfree(out);
728 abort:
729 /* Put the chip back into reset */
730 wm0010_halt(codec);
731 mutex_unlock(&wm0010->lock);
732 return ret;
733
734 err_core:
735 mutex_unlock(&wm0010->lock);
736 regulator_bulk_disable(ARRAY_SIZE(wm0010->core_supplies),
737 wm0010->core_supplies);
738 err:
739 return ret;
740 }
741
742 static int wm0010_set_bias_level(struct snd_soc_codec *codec,
743 enum snd_soc_bias_level level)
744 {
745 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
746
747 switch (level) {
748 case SND_SOC_BIAS_ON:
749 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_PREPARE)
750 wm0010_boot(codec);
751 break;
752 case SND_SOC_BIAS_PREPARE:
753 break;
754 case SND_SOC_BIAS_STANDBY:
755 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_PREPARE) {
756 mutex_lock(&wm0010->lock);
757 wm0010_halt(codec);
758 mutex_unlock(&wm0010->lock);
759 }
760 break;
761 case SND_SOC_BIAS_OFF:
762 break;
763 }
764
765 return 0;
766 }
767
768 static int wm0010_set_sysclk(struct snd_soc_codec *codec, int source,
769 int clk_id, unsigned int freq, int dir)
770 {
771 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
772 unsigned int i;
773
774 wm0010->sysclk = freq;
775
776 if (freq < pll_clock_map[ARRAY_SIZE(pll_clock_map)-1].max_sysclk) {
777 wm0010->max_spi_freq = 0;
778 } else {
779 for (i = 0; i < ARRAY_SIZE(pll_clock_map); i++)
780 if (freq >= pll_clock_map[i].max_sysclk) {
781 wm0010->max_spi_freq = pll_clock_map[i].max_pll_spi_speed;
782 wm0010->pll_clkctrl1 = pll_clock_map[i].pll_clkctrl1;
783 break;
784 }
785 }
786
787 return 0;
788 }
789
790 static int wm0010_probe(struct snd_soc_codec *codec);
791
792 static struct snd_soc_codec_driver soc_codec_dev_wm0010 = {
793 .probe = wm0010_probe,
794 .set_bias_level = wm0010_set_bias_level,
795 .set_sysclk = wm0010_set_sysclk,
796 .idle_bias_off = true,
797
798 .dapm_widgets = wm0010_dapm_widgets,
799 .num_dapm_widgets = ARRAY_SIZE(wm0010_dapm_widgets),
800 .dapm_routes = wm0010_dapm_routes,
801 .num_dapm_routes = ARRAY_SIZE(wm0010_dapm_routes),
802 };
803
804 #define WM0010_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
805 #define WM0010_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |\
806 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE |\
807 SNDRV_PCM_FMTBIT_S32_LE)
808
809 static struct snd_soc_dai_driver wm0010_dai[] = {
810 {
811 .name = "wm0010-sdi1",
812 .playback = {
813 .stream_name = "SDI1 Playback",
814 .channels_min = 1,
815 .channels_max = 2,
816 .rates = WM0010_RATES,
817 .formats = WM0010_FORMATS,
818 },
819 .capture = {
820 .stream_name = "SDI1 Capture",
821 .channels_min = 1,
822 .channels_max = 2,
823 .rates = WM0010_RATES,
824 .formats = WM0010_FORMATS,
825 },
826 },
827 {
828 .name = "wm0010-sdi2",
829 .playback = {
830 .stream_name = "SDI2 Playback",
831 .channels_min = 1,
832 .channels_max = 2,
833 .rates = WM0010_RATES,
834 .formats = WM0010_FORMATS,
835 },
836 .capture = {
837 .stream_name = "SDI2 Capture",
838 .channels_min = 1,
839 .channels_max = 2,
840 .rates = WM0010_RATES,
841 .formats = WM0010_FORMATS,
842 },
843 },
844 };
845
846 static irqreturn_t wm0010_irq(int irq, void *data)
847 {
848 struct wm0010_priv *wm0010 = data;
849
850 switch (wm0010->state) {
851 case WM0010_OUT_OF_RESET:
852 case WM0010_BOOTROM:
853 case WM0010_STAGE2:
854 spin_lock(&wm0010->irq_lock);
855 complete(&wm0010->boot_completion);
856 spin_unlock(&wm0010->irq_lock);
857 return IRQ_HANDLED;
858 default:
859 return IRQ_NONE;
860 }
861
862 return IRQ_NONE;
863 }
864
865 static int wm0010_probe(struct snd_soc_codec *codec)
866 {
867 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
868
869 wm0010->codec = codec;
870
871 return 0;
872 }
873
874 static int wm0010_spi_probe(struct spi_device *spi)
875 {
876 unsigned long gpio_flags;
877 int ret;
878 int trigger;
879 int irq;
880 struct wm0010_priv *wm0010;
881
882 wm0010 = devm_kzalloc(&spi->dev, sizeof(*wm0010),
883 GFP_KERNEL);
884 if (!wm0010)
885 return -ENOMEM;
886
887 mutex_init(&wm0010->lock);
888 spin_lock_init(&wm0010->irq_lock);
889
890 spi_set_drvdata(spi, wm0010);
891 wm0010->dev = &spi->dev;
892
893 if (dev_get_platdata(&spi->dev))
894 memcpy(&wm0010->pdata, dev_get_platdata(&spi->dev),
895 sizeof(wm0010->pdata));
896
897 init_completion(&wm0010->boot_completion);
898
899 wm0010->core_supplies[0].supply = "AVDD";
900 wm0010->core_supplies[1].supply = "DCVDD";
901 ret = devm_regulator_bulk_get(wm0010->dev, ARRAY_SIZE(wm0010->core_supplies),
902 wm0010->core_supplies);
903 if (ret != 0) {
904 dev_err(wm0010->dev, "Failed to obtain core supplies: %d\n",
905 ret);
906 return ret;
907 }
908
909 wm0010->dbvdd = devm_regulator_get(wm0010->dev, "DBVDD");
910 if (IS_ERR(wm0010->dbvdd)) {
911 ret = PTR_ERR(wm0010->dbvdd);
912 dev_err(wm0010->dev, "Failed to obtain DBVDD: %d\n", ret);
913 return ret;
914 }
915
916 if (wm0010->pdata.gpio_reset) {
917 wm0010->gpio_reset = wm0010->pdata.gpio_reset;
918
919 if (wm0010->pdata.reset_active_high)
920 wm0010->gpio_reset_value = 1;
921 else
922 wm0010->gpio_reset_value = 0;
923
924 if (wm0010->gpio_reset_value)
925 gpio_flags = GPIOF_OUT_INIT_HIGH;
926 else
927 gpio_flags = GPIOF_OUT_INIT_LOW;
928
929 ret = devm_gpio_request_one(wm0010->dev, wm0010->gpio_reset,
930 gpio_flags, "wm0010 reset");
931 if (ret < 0) {
932 dev_err(wm0010->dev,
933 "Failed to request GPIO for DSP reset: %d\n",
934 ret);
935 return ret;
936 }
937 } else {
938 dev_err(wm0010->dev, "No reset GPIO configured\n");
939 return -EINVAL;
940 }
941
942 wm0010->state = WM0010_POWER_OFF;
943
944 irq = spi->irq;
945 if (wm0010->pdata.irq_flags)
946 trigger = wm0010->pdata.irq_flags;
947 else
948 trigger = IRQF_TRIGGER_FALLING;
949 trigger |= IRQF_ONESHOT;
950
951 ret = request_threaded_irq(irq, NULL, wm0010_irq, trigger,
952 "wm0010", wm0010);
953 if (ret) {
954 dev_err(wm0010->dev, "Failed to request IRQ %d: %d\n",
955 irq, ret);
956 return ret;
957 }
958 wm0010->irq = irq;
959
960 ret = irq_set_irq_wake(irq, 1);
961 if (ret) {
962 dev_err(wm0010->dev, "Failed to set IRQ %d as wake source: %d\n",
963 irq, ret);
964 return ret;
965 }
966
967 if (spi->max_speed_hz)
968 wm0010->board_max_spi_speed = spi->max_speed_hz;
969 else
970 wm0010->board_max_spi_speed = 0;
971
972 ret = snd_soc_register_codec(&spi->dev,
973 &soc_codec_dev_wm0010, wm0010_dai,
974 ARRAY_SIZE(wm0010_dai));
975 if (ret < 0)
976 return ret;
977
978 return 0;
979 }
980
981 static int wm0010_spi_remove(struct spi_device *spi)
982 {
983 struct wm0010_priv *wm0010 = spi_get_drvdata(spi);
984
985 snd_soc_unregister_codec(&spi->dev);
986
987 gpio_set_value_cansleep(wm0010->gpio_reset,
988 wm0010->gpio_reset_value);
989
990 irq_set_irq_wake(wm0010->irq, 0);
991
992 if (wm0010->irq)
993 free_irq(wm0010->irq, wm0010);
994
995 return 0;
996 }
997
998 static struct spi_driver wm0010_spi_driver = {
999 .driver = {
1000 .name = "wm0010",
1001 },
1002 .probe = wm0010_spi_probe,
1003 .remove = wm0010_spi_remove,
1004 };
1005
1006 module_spi_driver(wm0010_spi_driver);
1007
1008 MODULE_DESCRIPTION("ASoC WM0010 driver");
1009 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1010 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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