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Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
[linux-2.6.git] / sound / soc / codecs / wm0010.c
blobf5e835662cdca30477738e39ffe7d57f6305db78
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 const char *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 BUG_ON(!list_empty(&xfer_list));
376 init_completion(&done);
377
378 /* First record should be INFO */
379 if (rec->command != DFW_CMD_INFO) {
380 dev_err(codec->dev, "First record not INFO\r\n");
381 ret = -EINVAL;
382 goto abort;
383 }
384
385 if (inforec->info_version != INFO_VERSION) {
386 dev_err(codec->dev,
387 "Unsupported version (%02d) of INFO record\r\n",
388 inforec->info_version);
389 ret = -EINVAL;
390 goto abort;
391 }
392
393 dev_dbg(codec->dev, "Version v%02d INFO record found\r\n",
394 inforec->info_version);
395
396 /* Check it's a DSP file */
397 if (dsp != DEVICE_ID_WM0010) {
398 dev_err(codec->dev, "Not a WM0010 firmware file.\r\n");
399 ret = -EINVAL;
400 goto abort;
401 }
402
403 /* Skip the info record as we don't need to send it */
404 offset += ((rec->length) + 8);
405 rec = (void *)&rec->data[rec->length];
406
407 while (offset < fw->size) {
408 dev_dbg(codec->dev,
409 "Packet: command %d, data length = 0x%x\r\n",
410 rec->command, rec->length);
411 len = rec->length + 8;
412
413 out = kzalloc(len, GFP_KERNEL);
414 if (!out) {
415 dev_err(codec->dev,
416 "Failed to allocate RX buffer\n");
417 ret = -ENOMEM;
418 goto abort1;
419 }
420
421 img = kzalloc(len, GFP_KERNEL);
422 if (!img) {
423 dev_err(codec->dev,
424 "Failed to allocate image buffer\n");
425 ret = -ENOMEM;
426 goto abort1;
427 }
428
429 byte_swap_64((u64 *)&rec->command, img, len);
430
431 xfer = kzalloc(sizeof(*xfer), GFP_KERNEL);
432 if (!xfer) {
433 dev_err(codec->dev, "Failed to allocate xfer\n");
434 ret = -ENOMEM;
435 goto abort1;
436 }
437
438 xfer->codec = codec;
439 list_add_tail(&xfer->list, &xfer_list);
440
441 spi_message_init(&xfer->m);
442 xfer->m.complete = wm0010_boot_xfer_complete;
443 xfer->m.context = xfer;
444 xfer->t.tx_buf = img;
445 xfer->t.rx_buf = out;
446 xfer->t.len = len;
447 xfer->t.bits_per_word = 8;
448
449 if (!wm0010->pll_running) {
450 xfer->t.speed_hz = wm0010->sysclk / 6;
451 } else {
452 xfer->t.speed_hz = wm0010->max_spi_freq;
453
454 if (wm0010->board_max_spi_speed &&
455 (wm0010->board_max_spi_speed < wm0010->max_spi_freq))
456 xfer->t.speed_hz = wm0010->board_max_spi_speed;
457 }
458
459 /* Store max usable spi frequency for later use */
460 wm0010->max_spi_freq = xfer->t.speed_hz;
461
462 spi_message_add_tail(&xfer->t, &xfer->m);
463
464 offset += ((rec->length) + 8);
465 rec = (void *)&rec->data[rec->length];
466
467 if (offset >= fw->size) {
468 dev_dbg(codec->dev, "All transfers scheduled\n");
469 xfer->done = &done;
470 }
471
472 ret = spi_async(spi, &xfer->m);
473 if (ret != 0) {
474 dev_err(codec->dev, "Write failed: %d\n", ret);
475 goto abort1;
476 }
477
478 if (wm0010->boot_failed) {
479 dev_dbg(codec->dev, "Boot fail!\n");
480 ret = -EINVAL;
481 goto abort1;
482 }
483 }
484
485 wait_for_completion(&done);
486
487 ret = 0;
488
489 abort1:
490 while (!list_empty(&xfer_list)) {
491 xfer = list_first_entry(&xfer_list, struct wm0010_boot_xfer,
492 list);
493 kfree(xfer->t.rx_buf);
494 kfree(xfer->t.tx_buf);
495 list_del(&xfer->list);
496 kfree(xfer);
497 }
498
499 abort:
500 release_firmware(fw);
501 return ret;
502 }
503
504 static int wm0010_stage2_load(struct snd_soc_codec *codec)
505 {
506 struct spi_device *spi = to_spi_device(codec->dev);
507 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
508 const struct firmware *fw;
509 struct spi_message m;
510 struct spi_transfer t;
511 u32 *img;
512 u8 *out;
513 int i;
514 int ret = 0;
515
516 ret = request_firmware(&fw, "wm0010_stage2.bin", codec->dev);
517 if (ret != 0) {
518 dev_err(codec->dev, "Failed to request stage2 loader: %d\n",
519 ret);
520 return ret;
521 }
522
523 dev_dbg(codec->dev, "Downloading %zu byte stage 2 loader\n", fw->size);
524
525 /* Copy to local buffer first as vmalloc causes problems for dma */
526 img = kzalloc(fw->size, GFP_KERNEL);
527 if (!img) {
528 dev_err(codec->dev, "Failed to allocate image buffer\n");
529 ret = -ENOMEM;
530 goto abort2;
531 }
532
533 out = kzalloc(fw->size, GFP_KERNEL);
534 if (!out) {
535 dev_err(codec->dev, "Failed to allocate output buffer\n");
536 ret = -ENOMEM;
537 goto abort1;
538 }
539
540 memcpy(img, &fw->data[0], fw->size);
541
542 spi_message_init(&m);
543 memset(&t, 0, sizeof(t));
544 t.rx_buf = out;
545 t.tx_buf = img;
546 t.len = fw->size;
547 t.bits_per_word = 8;
548 t.speed_hz = wm0010->sysclk / 10;
549 spi_message_add_tail(&t, &m);
550
551 dev_dbg(codec->dev, "Starting initial download at %dHz\n",
552 t.speed_hz);
553
554 ret = spi_sync(spi, &m);
555 if (ret != 0) {
556 dev_err(codec->dev, "Initial download failed: %d\n", ret);
557 goto abort;
558 }
559
560 /* Look for errors from the boot ROM */
561 for (i = 0; i < fw->size; i++) {
562 if (out[i] != 0x55) {
563 dev_err(codec->dev, "Boot ROM error: %x in %d\n",
564 out[i], i);
565 wm0010_mark_boot_failure(wm0010);
566 ret = -EBUSY;
567 goto abort;
568 }
569 }
570 abort:
571 kfree(out);
572 abort1:
573 kfree(img);
574 abort2:
575 release_firmware(fw);
576
577 return ret;
578 }
579
580 static int wm0010_boot(struct snd_soc_codec *codec)
581 {
582 struct spi_device *spi = to_spi_device(codec->dev);
583 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
584 unsigned long flags;
585 int ret;
586 const struct firmware *fw;
587 struct spi_message m;
588 struct spi_transfer t;
589 struct dfw_pllrec pll_rec;
590 u32 *p, len;
591 u64 *img_swap;
592 u8 *out;
593 int i;
594
595 spin_lock_irqsave(&wm0010->irq_lock, flags);
596 if (wm0010->state != WM0010_POWER_OFF)
597 dev_warn(wm0010->dev, "DSP already powered up!\n");
598 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
599
600 if (wm0010->sysclk > 26000000) {
601 dev_err(codec->dev, "Max DSP clock frequency is 26MHz\n");
602 ret = -ECANCELED;
603 goto err;
604 }
605
606 mutex_lock(&wm0010->lock);
607 wm0010->pll_running = false;
608
609 dev_dbg(codec->dev, "max_spi_freq: %d\n", wm0010->max_spi_freq);
610
611 ret = regulator_bulk_enable(ARRAY_SIZE(wm0010->core_supplies),
612 wm0010->core_supplies);
613 if (ret != 0) {
614 dev_err(&spi->dev, "Failed to enable core supplies: %d\n",
615 ret);
616 mutex_unlock(&wm0010->lock);
617 goto err;
618 }
619
620 ret = regulator_enable(wm0010->dbvdd);
621 if (ret != 0) {
622 dev_err(&spi->dev, "Failed to enable DBVDD: %d\n", ret);
623 goto err_core;
624 }
625
626 /* Release reset */
627 gpio_set_value_cansleep(wm0010->gpio_reset, !wm0010->gpio_reset_value);
628 spin_lock_irqsave(&wm0010->irq_lock, flags);
629 wm0010->state = WM0010_OUT_OF_RESET;
630 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
631
632 /* First the bootloader */
633 ret = request_firmware(&fw, "wm0010_stage2.bin", codec->dev);
634 if (ret != 0) {
635 dev_err(codec->dev, "Failed to request stage2 loader: %d\n",
636 ret);
637 goto abort;
638 }
639
640 if (!wait_for_completion_timeout(&wm0010->boot_completion,
641 msecs_to_jiffies(20)))
642 dev_err(codec->dev, "Failed to get interrupt from DSP\n");
643
644 spin_lock_irqsave(&wm0010->irq_lock, flags);
645 wm0010->state = WM0010_BOOTROM;
646 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
647
648 ret = wm0010_stage2_load(codec);
649 if (ret)
650 goto abort;
651
652 if (!wait_for_completion_timeout(&wm0010->boot_completion,
653 msecs_to_jiffies(20)))
654 dev_err(codec->dev, "Failed to get interrupt from DSP loader.\n");
655
656 spin_lock_irqsave(&wm0010->irq_lock, flags);
657 wm0010->state = WM0010_STAGE2;
658 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
659
660 /* Only initialise PLL if max_spi_freq initialised */
661 if (wm0010->max_spi_freq) {
662
663 /* Initialise a PLL record */
664 memset(&pll_rec, 0, sizeof(pll_rec));
665 pll_rec.command = DFW_CMD_PLL;
666 pll_rec.length = (sizeof(pll_rec) - 8);
667
668 /* On wm0010 only the CLKCTRL1 value is used */
669 pll_rec.clkctrl1 = wm0010->pll_clkctrl1;
670
671 ret = -ENOMEM;
672 len = pll_rec.length + 8;
673 out = kzalloc(len, GFP_KERNEL);
674 if (!out) {
675 dev_err(codec->dev,
676 "Failed to allocate RX buffer\n");
677 goto abort;
678 }
679
680 img_swap = kzalloc(len, GFP_KERNEL);
681 if (!img_swap) {
682 dev_err(codec->dev,
683 "Failed to allocate image buffer\n");
684 goto abort;
685 }
686
687 /* We need to re-order for 0010 */
688 byte_swap_64((u64 *)&pll_rec, img_swap, len);
689
690 spi_message_init(&m);
691 memset(&t, 0, sizeof(t));
692 t.rx_buf = out;
693 t.tx_buf = img_swap;
694 t.len = len;
695 t.bits_per_word = 8;
696 t.speed_hz = wm0010->sysclk / 6;
697 spi_message_add_tail(&t, &m);
698
699 ret = spi_sync(spi, &m);
700 if (ret != 0) {
701 dev_err(codec->dev, "First PLL write failed: %d\n", ret);
702 goto abort;
703 }
704
705 /* Use a second send of the message to get the return status */
706 ret = spi_sync(spi, &m);
707 if (ret != 0) {
708 dev_err(codec->dev, "Second PLL write failed: %d\n", ret);
709 goto abort;
710 }
711
712 p = (u32 *)out;
713
714 /* Look for PLL active code from the DSP */
715 for (i = 0; i < len / 4; i++) {
716 if (*p == 0x0e00ed0f) {
717 dev_dbg(codec->dev, "PLL packet received\n");
718 wm0010->pll_running = true;
719 break;
720 }
721 p++;
722 }
723
724 kfree(img_swap);
725 kfree(out);
726 } else
727 dev_dbg(codec->dev, "Not enabling DSP PLL.");
728
729 ret = wm0010_firmware_load("wm0010.dfw", codec);
730
731 if (ret != 0)
732 goto abort;
733
734 spin_lock_irqsave(&wm0010->irq_lock, flags);
735 wm0010->state = WM0010_FIRMWARE;
736 spin_unlock_irqrestore(&wm0010->irq_lock, flags);
737
738 mutex_unlock(&wm0010->lock);
739
740 return 0;
741
742 abort:
743 /* Put the chip back into reset */
744 wm0010_halt(codec);
745 mutex_unlock(&wm0010->lock);
746 return ret;
747
748 err_core:
749 mutex_unlock(&wm0010->lock);
750 regulator_bulk_disable(ARRAY_SIZE(wm0010->core_supplies),
751 wm0010->core_supplies);
752 err:
753 return ret;
754 }
755
756 static int wm0010_set_bias_level(struct snd_soc_codec *codec,
757 enum snd_soc_bias_level level)
758 {
759 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
760
761 switch (level) {
762 case SND_SOC_BIAS_ON:
763 if (codec->dapm.bias_level == SND_SOC_BIAS_PREPARE)
764 wm0010_boot(codec);
765 break;
766 case SND_SOC_BIAS_PREPARE:
767 break;
768 case SND_SOC_BIAS_STANDBY:
769 if (codec->dapm.bias_level == SND_SOC_BIAS_PREPARE) {
770 mutex_lock(&wm0010->lock);
771 wm0010_halt(codec);
772 mutex_unlock(&wm0010->lock);
773 }
774 break;
775 case SND_SOC_BIAS_OFF:
776 break;
777 }
778
779 codec->dapm.bias_level = level;
780
781 return 0;
782 }
783
784 static int wm0010_set_sysclk(struct snd_soc_codec *codec, int source,
785 int clk_id, unsigned int freq, int dir)
786 {
787 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
788 unsigned int i;
789
790 wm0010->sysclk = freq;
791
792 if (freq < pll_clock_map[ARRAY_SIZE(pll_clock_map)-1].max_sysclk) {
793 wm0010->max_spi_freq = 0;
794 } else {
795 for (i = 0; i < ARRAY_SIZE(pll_clock_map); i++)
796 if (freq >= pll_clock_map[i].max_sysclk)
797 break;
798
799 wm0010->max_spi_freq = pll_clock_map[i].max_pll_spi_speed;
800 wm0010->pll_clkctrl1 = pll_clock_map[i].pll_clkctrl1;
801 }
802
803 return 0;
804 }
805
806 static int wm0010_probe(struct snd_soc_codec *codec);
807
808 static struct snd_soc_codec_driver soc_codec_dev_wm0010 = {
809 .probe = wm0010_probe,
810 .set_bias_level = wm0010_set_bias_level,
811 .set_sysclk = wm0010_set_sysclk,
812 .idle_bias_off = true,
813
814 .dapm_widgets = wm0010_dapm_widgets,
815 .num_dapm_widgets = ARRAY_SIZE(wm0010_dapm_widgets),
816 .dapm_routes = wm0010_dapm_routes,
817 .num_dapm_routes = ARRAY_SIZE(wm0010_dapm_routes),
818 };
819
820 #define WM0010_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
821 #define WM0010_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |\
822 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE |\
823 SNDRV_PCM_FMTBIT_S32_LE)
824
825 static struct snd_soc_dai_driver wm0010_dai[] = {
826 {
827 .name = "wm0010-sdi1",
828 .playback = {
829 .stream_name = "SDI1 Playback",
830 .channels_min = 1,
831 .channels_max = 2,
832 .rates = WM0010_RATES,
833 .formats = WM0010_FORMATS,
834 },
835 .capture = {
836 .stream_name = "SDI1 Capture",
837 .channels_min = 1,
838 .channels_max = 2,
839 .rates = WM0010_RATES,
840 .formats = WM0010_FORMATS,
841 },
842 },
843 {
844 .name = "wm0010-sdi2",
845 .playback = {
846 .stream_name = "SDI2 Playback",
847 .channels_min = 1,
848 .channels_max = 2,
849 .rates = WM0010_RATES,
850 .formats = WM0010_FORMATS,
851 },
852 .capture = {
853 .stream_name = "SDI2 Capture",
854 .channels_min = 1,
855 .channels_max = 2,
856 .rates = WM0010_RATES,
857 .formats = WM0010_FORMATS,
858 },
859 },
860 };
861
862 static irqreturn_t wm0010_irq(int irq, void *data)
863 {
864 struct wm0010_priv *wm0010 = data;
865
866 switch (wm0010->state) {
867 case WM0010_OUT_OF_RESET:
868 case WM0010_BOOTROM:
869 case WM0010_STAGE2:
870 spin_lock(&wm0010->irq_lock);
871 complete(&wm0010->boot_completion);
872 spin_unlock(&wm0010->irq_lock);
873 return IRQ_HANDLED;
874 default:
875 return IRQ_NONE;
876 }
877
878 return IRQ_NONE;
879 }
880
881 static int wm0010_probe(struct snd_soc_codec *codec)
882 {
883 struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
884
885 wm0010->codec = codec;
886
887 return 0;
888 }
889
890 static int wm0010_spi_probe(struct spi_device *spi)
891 {
892 unsigned long gpio_flags;
893 int ret;
894 int trigger;
895 int irq;
896 struct wm0010_priv *wm0010;
897
898 wm0010 = devm_kzalloc(&spi->dev, sizeof(*wm0010),
899 GFP_KERNEL);
900 if (!wm0010)
901 return -ENOMEM;
902
903 mutex_init(&wm0010->lock);
904 spin_lock_init(&wm0010->irq_lock);
905
906 spi_set_drvdata(spi, wm0010);
907 wm0010->dev = &spi->dev;
908
909 if (dev_get_platdata(&spi->dev))
910 memcpy(&wm0010->pdata, dev_get_platdata(&spi->dev),
911 sizeof(wm0010->pdata));
912
913 init_completion(&wm0010->boot_completion);
914
915 wm0010->core_supplies[0].supply = "AVDD";
916 wm0010->core_supplies[1].supply = "DCVDD";
917 ret = devm_regulator_bulk_get(wm0010->dev, ARRAY_SIZE(wm0010->core_supplies),
918 wm0010->core_supplies);
919 if (ret != 0) {
920 dev_err(wm0010->dev, "Failed to obtain core supplies: %d\n",
921 ret);
922 return ret;
923 }
924
925 wm0010->dbvdd = devm_regulator_get(wm0010->dev, "DBVDD");
926 if (IS_ERR(wm0010->dbvdd)) {
927 ret = PTR_ERR(wm0010->dbvdd);
928 dev_err(wm0010->dev, "Failed to obtain DBVDD: %d\n", ret);
929 return ret;
930 }
931
932 if (wm0010->pdata.gpio_reset) {
933 wm0010->gpio_reset = wm0010->pdata.gpio_reset;
934
935 if (wm0010->pdata.reset_active_high)
936 wm0010->gpio_reset_value = 1;
937 else
938 wm0010->gpio_reset_value = 0;
939
940 if (wm0010->gpio_reset_value)
941 gpio_flags = GPIOF_OUT_INIT_HIGH;
942 else
943 gpio_flags = GPIOF_OUT_INIT_LOW;
944
945 ret = devm_gpio_request_one(wm0010->dev, wm0010->gpio_reset,
946 gpio_flags, "wm0010 reset");
947 if (ret < 0) {
948 dev_err(wm0010->dev,
949 "Failed to request GPIO for DSP reset: %d\n",
950 ret);
951 return ret;
952 }
953 } else {
954 dev_err(wm0010->dev, "No reset GPIO configured\n");
955 return -EINVAL;
956 }
957
958 wm0010->state = WM0010_POWER_OFF;
959
960 irq = spi->irq;
961 if (wm0010->pdata.irq_flags)
962 trigger = wm0010->pdata.irq_flags;
963 else
964 trigger = IRQF_TRIGGER_FALLING;
965 trigger |= IRQF_ONESHOT;
966
967 ret = request_threaded_irq(irq, NULL, wm0010_irq, trigger | IRQF_ONESHOT,
968 "wm0010", wm0010);
969 if (ret) {
970 dev_err(wm0010->dev, "Failed to request IRQ %d: %d\n",
971 irq, ret);
972 return ret;
973 }
974 wm0010->irq = irq;
975
976 ret = irq_set_irq_wake(irq, 1);
977 if (ret) {
978 dev_err(wm0010->dev, "Failed to set IRQ %d as wake source: %d\n",
979 irq, ret);
980 return ret;
981 }
982
983 if (spi->max_speed_hz)
984 wm0010->board_max_spi_speed = spi->max_speed_hz;
985 else
986 wm0010->board_max_spi_speed = 0;
987
988 ret = snd_soc_register_codec(&spi->dev,
989 &soc_codec_dev_wm0010, wm0010_dai,
990 ARRAY_SIZE(wm0010_dai));
991 if (ret < 0)
992 return ret;
993
994 return 0;
995 }
996
997 static int wm0010_spi_remove(struct spi_device *spi)
998 {
999 struct wm0010_priv *wm0010 = spi_get_drvdata(spi);
1000
1001 snd_soc_unregister_codec(&spi->dev);
1002
1003 gpio_set_value_cansleep(wm0010->gpio_reset,
1004 wm0010->gpio_reset_value);
1005
1006 irq_set_irq_wake(wm0010->irq, 0);
1007
1008 if (wm0010->irq)
1009 free_irq(wm0010->irq, wm0010);
1010
1011 return 0;
1012 }
1013
1014 static struct spi_driver wm0010_spi_driver = {
1015 .driver = {
1016 .name = "wm0010",
1017 .bus = &spi_bus_type,
1018 .owner = THIS_MODULE,
1019 },
1020 .probe = wm0010_spi_probe,
1021 .remove = wm0010_spi_remove,
1022 };
1023
1024 module_spi_driver(wm0010_spi_driver);
1025
1026 MODULE_DESCRIPTION("ASoC WM0010 driver");
1027 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1028 MODULE_LICENSE("GPL");
Linus' kernel tree