Commit | Line | Data |
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e3523e01 DP |
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/irqreturn.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/spi/spi.h> | |
20 | #include <linux/firmware.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/fs.h> | |
23 | #include <linux/miscdevice.h> | |
24 | #include <linux/gpio.h> | |
25 | #include <linux/regulator/consumer.h> | |
26 | #include <linux/mutex.h> | |
27 | #include <linux/workqueue.h> | |
28 | ||
29 | #include <sound/soc.h> | |
30 | #include <sound/wm0010.h> | |
31 | ||
32 | #define DEVICE_ID_WM0010 10 | |
33 | ||
68e1969e SL |
34 | /* We only support v1 of the .dfw INFO record */ |
35 | #define INFO_VERSION 1 | |
36 | ||
e3523e01 DP |
37 | enum dfw_cmd { |
38 | DFW_CMD_FUSE = 0x01, | |
39 | DFW_CMD_CODE_HDR, | |
40 | DFW_CMD_CODE_DATA, | |
41 | DFW_CMD_PLL, | |
42 | DFW_CMD_INFO = 0xff | |
43 | }; | |
44 | ||
45 | struct dfw_binrec { | |
46 | u8 command; | |
47 | u32 length:24; | |
48 | u32 address; | |
49 | uint8_t data[0]; | |
50 | } __packed; | |
51 | ||
68e1969e SL |
52 | struct dfw_inforec { |
53 | u8 info_version; | |
54 | u8 tool_major_version; | |
55 | u8 tool_minor_version; | |
56 | u8 dsp_target; | |
57 | }; | |
58 | ||
e3523e01 DP |
59 | struct dfw_pllrec { |
60 | u8 command; | |
61 | u32 length:24; | |
62 | u32 address; | |
63 | u32 clkctrl1; | |
64 | u32 clkctrl2; | |
65 | u32 clkctrl3; | |
66 | u32 ldetctrl; | |
67 | u32 uart_div; | |
68 | u32 spi_div; | |
69 | } __packed; | |
70 | ||
71 | static struct pll_clock_map { | |
72 | int max_sysclk; | |
73 | int max_pll_spi_speed; | |
74 | u32 pll_clkctrl1; | |
75 | } pll_clock_map[] = { /* Dividers */ | |
76 | { 22000000, 26000000, 0x00201f11 }, /* 2,32,2 */ | |
77 | { 18000000, 26000000, 0x00203f21 }, /* 2,64,4 */ | |
78 | { 14000000, 26000000, 0x00202620 }, /* 1,39,4 */ | |
79 | { 10000000, 22000000, 0x00203120 }, /* 1,50,4 */ | |
80 | { 6500000, 22000000, 0x00204520 }, /* 1,70,4 */ | |
81 | { 5500000, 22000000, 0x00103f10 }, /* 1,64,2 */ | |
82 | }; | |
83 | ||
84 | enum wm0010_state { | |
85 | WM0010_POWER_OFF, | |
86 | WM0010_OUT_OF_RESET, | |
87 | WM0010_BOOTROM, | |
88 | WM0010_STAGE2, | |
89 | WM0010_FIRMWARE, | |
90 | }; | |
91 | ||
92 | struct wm0010_priv { | |
93 | struct snd_soc_codec *codec; | |
94 | ||
95 | struct mutex lock; | |
96 | struct device *dev; | |
97 | ||
98 | struct wm0010_pdata pdata; | |
99 | ||
100 | int gpio_reset; | |
101 | int gpio_reset_value; | |
102 | ||
103 | struct regulator_bulk_data core_supplies[2]; | |
104 | struct regulator *dbvdd; | |
105 | ||
106 | int sysclk; | |
107 | ||
108 | enum wm0010_state state; | |
109 | bool boot_failed; | |
e3523e01 DP |
110 | bool ready; |
111 | bool pll_running; | |
112 | int max_spi_freq; | |
113 | int board_max_spi_speed; | |
114 | u32 pll_clkctrl1; | |
115 | ||
116 | spinlock_t irq_lock; | |
117 | int irq; | |
118 | ||
119 | struct completion boot_completion; | |
120 | }; | |
121 | ||
122 | struct wm0010_spi_msg { | |
123 | struct spi_message m; | |
124 | struct spi_transfer t; | |
125 | u8 *tx_buf; | |
126 | u8 *rx_buf; | |
127 | size_t len; | |
128 | }; | |
129 | ||
1470bfac MB |
130 | static const struct snd_soc_dapm_widget wm0010_dapm_widgets[] = { |
131 | SND_SOC_DAPM_SUPPLY("CLKIN", SND_SOC_NOPM, 0, 0, NULL, 0), | |
132 | }; | |
133 | ||
e3523e01 | 134 | static const struct snd_soc_dapm_route wm0010_dapm_routes[] = { |
1549c34b MB |
135 | { "SDI2 Capture", NULL, "SDI1 Playback" }, |
136 | { "SDI1 Capture", NULL, "SDI2 Playback" }, | |
1470bfac MB |
137 | |
138 | { "SDI1 Capture", NULL, "CLKIN" }, | |
139 | { "SDI2 Capture", NULL, "CLKIN" }, | |
140 | { "SDI1 Playback", NULL, "CLKIN" }, | |
141 | { "SDI2 Playback", NULL, "CLKIN" }, | |
e3523e01 DP |
142 | }; |
143 | ||
144 | static const char *wm0010_state_to_str(enum wm0010_state state) | |
145 | { | |
146 | const char *state_to_str[] = { | |
147 | "Power off", | |
148 | "Out of reset", | |
bf9d3237 | 149 | "Boot ROM", |
e3523e01 DP |
150 | "Stage2", |
151 | "Firmware" | |
152 | }; | |
153 | ||
154 | if (state < 0 || state >= ARRAY_SIZE(state_to_str)) | |
155 | return "null"; | |
156 | return state_to_str[state]; | |
157 | } | |
158 | ||
159 | /* Called with wm0010->lock held */ | |
160 | static void wm0010_halt(struct snd_soc_codec *codec) | |
161 | { | |
162 | struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec); | |
163 | unsigned long flags; | |
164 | enum wm0010_state state; | |
165 | ||
166 | /* Fetch the wm0010 state */ | |
167 | spin_lock_irqsave(&wm0010->irq_lock, flags); | |
168 | state = wm0010->state; | |
169 | spin_unlock_irqrestore(&wm0010->irq_lock, flags); | |
170 | ||
171 | switch (state) { | |
172 | case WM0010_POWER_OFF: | |
173 | /* If there's nothing to do, bail out */ | |
174 | return; | |
175 | case WM0010_OUT_OF_RESET: | |
176 | case WM0010_BOOTROM: | |
177 | case WM0010_STAGE2: | |
178 | case WM0010_FIRMWARE: | |
179 | /* Remember to put chip back into reset */ | |
fff00cbc MB |
180 | gpio_set_value_cansleep(wm0010->gpio_reset, |
181 | wm0010->gpio_reset_value); | |
e3523e01 DP |
182 | /* Disable the regulators */ |
183 | regulator_disable(wm0010->dbvdd); | |
184 | regulator_bulk_disable(ARRAY_SIZE(wm0010->core_supplies), | |
185 | wm0010->core_supplies); | |
186 | break; | |
187 | } | |
188 | ||
189 | spin_lock_irqsave(&wm0010->irq_lock, flags); | |
190 | wm0010->state = WM0010_POWER_OFF; | |
191 | spin_unlock_irqrestore(&wm0010->irq_lock, flags); | |
192 | } | |
193 | ||
194 | struct wm0010_boot_xfer { | |
195 | struct list_head list; | |
196 | struct snd_soc_codec *codec; | |
197 | struct completion *done; | |
198 | struct spi_message m; | |
199 | struct spi_transfer t; | |
200 | }; | |
201 | ||
202 | /* Called with wm0010->lock held */ | |
203 | static void wm0010_mark_boot_failure(struct wm0010_priv *wm0010) | |
204 | { | |
205 | enum wm0010_state state; | |
206 | unsigned long flags; | |
207 | ||
208 | spin_lock_irqsave(&wm0010->irq_lock, flags); | |
209 | state = wm0010->state; | |
210 | spin_unlock_irqrestore(&wm0010->irq_lock, flags); | |
211 | ||
212 | dev_err(wm0010->dev, "Failed to transition from `%s' state to `%s' state\n", | |
213 | wm0010_state_to_str(state), wm0010_state_to_str(state + 1)); | |
214 | ||
215 | wm0010->boot_failed = true; | |
216 | } | |
217 | ||
218 | static void wm0010_boot_xfer_complete(void *data) | |
219 | { | |
220 | struct wm0010_boot_xfer *xfer = data; | |
221 | struct snd_soc_codec *codec = xfer->codec; | |
222 | struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec); | |
223 | u32 *out32 = xfer->t.rx_buf; | |
224 | int i; | |
225 | ||
226 | if (xfer->m.status != 0) { | |
227 | dev_err(codec->dev, "SPI transfer failed: %d\n", | |
228 | xfer->m.status); | |
229 | wm0010_mark_boot_failure(wm0010); | |
230 | if (xfer->done) | |
231 | complete(xfer->done); | |
232 | return; | |
233 | } | |
234 | ||
235 | for (i = 0; i < xfer->t.len / 4; i++) { | |
236 | dev_dbg(codec->dev, "%d: %04x\n", i, out32[i]); | |
237 | ||
238 | switch (be32_to_cpu(out32[i])) { | |
239 | case 0xe0e0e0e0: | |
240 | dev_err(codec->dev, | |
241 | "%d: ROM error reported in stage 2\n", i); | |
242 | wm0010_mark_boot_failure(wm0010); | |
243 | break; | |
244 | ||
245 | case 0x55555555: | |
f9baa0cc | 246 | if (wm0010->state < WM0010_STAGE2) |
e3523e01 DP |
247 | break; |
248 | dev_err(codec->dev, | |
249 | "%d: ROM bootloader running in stage 2\n", i); | |
250 | wm0010_mark_boot_failure(wm0010); | |
251 | break; | |
252 | ||
253 | case 0x0fed0000: | |
254 | dev_dbg(codec->dev, "Stage2 loader running\n"); | |
255 | break; | |
256 | ||
257 | case 0x0fed0007: | |
258 | dev_dbg(codec->dev, "CODE_HDR packet received\n"); | |
259 | break; | |
260 | ||
261 | case 0x0fed0008: | |
262 | dev_dbg(codec->dev, "CODE_DATA packet received\n"); | |
263 | break; | |
264 | ||
265 | case 0x0fed0009: | |
266 | dev_dbg(codec->dev, "Download complete\n"); | |
267 | break; | |
268 | ||
269 | case 0x0fed000c: | |
270 | dev_dbg(codec->dev, "Application start\n"); | |
271 | break; | |
272 | ||
273 | case 0x0fed000e: | |
274 | dev_dbg(codec->dev, "PLL packet received\n"); | |
275 | wm0010->pll_running = true; | |
276 | break; | |
277 | ||
278 | case 0x0fed0025: | |
279 | dev_err(codec->dev, "Device reports image too long\n"); | |
280 | wm0010_mark_boot_failure(wm0010); | |
281 | break; | |
282 | ||
283 | case 0x0fed002c: | |
284 | dev_err(codec->dev, "Device reports bad SPI packet\n"); | |
285 | wm0010_mark_boot_failure(wm0010); | |
286 | break; | |
287 | ||
288 | case 0x0fed0031: | |
289 | dev_err(codec->dev, "Device reports SPI read overflow\n"); | |
290 | wm0010_mark_boot_failure(wm0010); | |
291 | break; | |
292 | ||
293 | case 0x0fed0032: | |
294 | dev_err(codec->dev, "Device reports SPI underclock\n"); | |
295 | wm0010_mark_boot_failure(wm0010); | |
296 | break; | |
297 | ||
298 | case 0x0fed0033: | |
299 | dev_err(codec->dev, "Device reports bad header packet\n"); | |
300 | wm0010_mark_boot_failure(wm0010); | |
301 | break; | |
302 | ||
303 | case 0x0fed0034: | |
304 | dev_err(codec->dev, "Device reports invalid packet type\n"); | |
305 | wm0010_mark_boot_failure(wm0010); | |
306 | break; | |
307 | ||
308 | case 0x0fed0035: | |
309 | dev_err(codec->dev, "Device reports data before header error\n"); | |
310 | wm0010_mark_boot_failure(wm0010); | |
311 | break; | |
312 | ||
313 | case 0x0fed0038: | |
314 | dev_err(codec->dev, "Device reports invalid PLL packet\n"); | |
315 | break; | |
316 | ||
317 | case 0x0fed003a: | |
318 | dev_err(codec->dev, "Device reports packet alignment error\n"); | |
319 | wm0010_mark_boot_failure(wm0010); | |
320 | break; | |
321 | ||
322 | default: | |
323 | dev_err(codec->dev, "Unrecognised return 0x%x\n", | |
324 | be32_to_cpu(out32[i])); | |
325 | wm0010_mark_boot_failure(wm0010); | |
326 | break; | |
327 | } | |
328 | ||
329 | if (wm0010->boot_failed) | |
330 | break; | |
331 | } | |
332 | ||
e3523e01 DP |
333 | if (xfer->done) |
334 | complete(xfer->done); | |
335 | } | |
336 | ||
337 | static void byte_swap_64(u64 *data_in, u64 *data_out, u32 len) | |
338 | { | |
339 | int i; | |
340 | ||
341 | for (i = 0; i < len / 8; i++) | |
342 | data_out[i] = cpu_to_be64(le64_to_cpu(data_in[i])); | |
343 | } | |
344 | ||
8f7d52af | 345 | static int wm0010_firmware_load(char *name, struct snd_soc_codec *codec) |
e3523e01 DP |
346 | { |
347 | struct spi_device *spi = to_spi_device(codec->dev); | |
348 | struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec); | |
e3523e01 DP |
349 | struct list_head xfer_list; |
350 | struct wm0010_boot_xfer *xfer; | |
351 | int ret; | |
352 | struct completion done; | |
353 | const struct firmware *fw; | |
354 | const struct dfw_binrec *rec; | |
68e1969e | 355 | const struct dfw_inforec *inforec; |
8f7d52af SL |
356 | u64 *img; |
357 | u8 *out, dsp; | |
358 | u32 len, offset; | |
359 | ||
360 | INIT_LIST_HEAD(&xfer_list); | |
361 | ||
362 | ret = request_firmware(&fw, name, codec->dev); | |
363 | if (ret != 0) { | |
364 | dev_err(codec->dev, "Failed to request application: %d\n", | |
365 | ret); | |
366 | return ret; | |
367 | } | |
368 | ||
369 | rec = (const struct dfw_binrec *)fw->data; | |
68e1969e | 370 | inforec = (const struct dfw_inforec *)rec->data; |
8f7d52af | 371 | offset = 0; |
68e1969e | 372 | dsp = inforec->dsp_target; |
8f7d52af SL |
373 | wm0010->boot_failed = false; |
374 | BUG_ON(!list_empty(&xfer_list)); | |
375 | init_completion(&done); | |
376 | ||
377 | /* First record should be INFO */ | |
378 | if (rec->command != DFW_CMD_INFO) { | |
379 | dev_err(codec->dev, "First record not INFO\r\n"); | |
380 | ret = -EINVAL; | |
381 | goto abort; | |
382 | } | |
383 | ||
68e1969e SL |
384 | if (inforec->info_version != INFO_VERSION) { |
385 | dev_err(codec->dev, | |
386 | "Unsupported version (%02d) of INFO record\r\n", | |
387 | inforec->info_version); | |
388 | ret = -EINVAL; | |
389 | goto abort; | |
390 | } | |
391 | ||
392 | dev_dbg(codec->dev, "Version v%02d INFO record found\r\n", | |
393 | inforec->info_version); | |
394 | ||
8f7d52af SL |
395 | /* Check it's a DSP file */ |
396 | if (dsp != DEVICE_ID_WM0010) { | |
397 | dev_err(codec->dev, "Not a WM0010 firmware file.\r\n"); | |
398 | ret = -EINVAL; | |
399 | goto abort; | |
400 | } | |
401 | ||
402 | /* Skip the info record as we don't need to send it */ | |
403 | offset += ((rec->length) + 8); | |
404 | rec = (void *)&rec->data[rec->length]; | |
405 | ||
406 | while (offset < fw->size) { | |
407 | dev_dbg(codec->dev, | |
408 | "Packet: command %d, data length = 0x%x\r\n", | |
409 | rec->command, rec->length); | |
410 | len = rec->length + 8; | |
411 | ||
412 | out = kzalloc(len, GFP_KERNEL); | |
413 | if (!out) { | |
414 | dev_err(codec->dev, | |
415 | "Failed to allocate RX buffer\n"); | |
416 | ret = -ENOMEM; | |
417 | goto abort1; | |
418 | } | |
419 | ||
420 | img = kzalloc(len, GFP_KERNEL); | |
421 | if (!img) { | |
422 | dev_err(codec->dev, | |
423 | "Failed to allocate image buffer\n"); | |
424 | ret = -ENOMEM; | |
425 | goto abort1; | |
426 | } | |
427 | ||
428 | byte_swap_64((u64 *)&rec->command, img, len); | |
429 | ||
430 | xfer = kzalloc(sizeof(*xfer), GFP_KERNEL); | |
431 | if (!xfer) { | |
432 | dev_err(codec->dev, "Failed to allocate xfer\n"); | |
433 | ret = -ENOMEM; | |
434 | goto abort1; | |
435 | } | |
436 | ||
437 | xfer->codec = codec; | |
438 | list_add_tail(&xfer->list, &xfer_list); | |
439 | ||
440 | spi_message_init(&xfer->m); | |
441 | xfer->m.complete = wm0010_boot_xfer_complete; | |
442 | xfer->m.context = xfer; | |
443 | xfer->t.tx_buf = img; | |
444 | xfer->t.rx_buf = out; | |
445 | xfer->t.len = len; | |
446 | xfer->t.bits_per_word = 8; | |
447 | ||
448 | if (!wm0010->pll_running) { | |
449 | xfer->t.speed_hz = wm0010->sysclk / 6; | |
450 | } else { | |
451 | xfer->t.speed_hz = wm0010->max_spi_freq; | |
452 | ||
453 | if (wm0010->board_max_spi_speed && | |
454 | (wm0010->board_max_spi_speed < wm0010->max_spi_freq)) | |
455 | xfer->t.speed_hz = wm0010->board_max_spi_speed; | |
456 | } | |
457 | ||
458 | /* Store max usable spi frequency for later use */ | |
459 | wm0010->max_spi_freq = xfer->t.speed_hz; | |
460 | ||
461 | spi_message_add_tail(&xfer->t, &xfer->m); | |
462 | ||
463 | offset += ((rec->length) + 8); | |
464 | rec = (void *)&rec->data[rec->length]; | |
465 | ||
466 | if (offset >= fw->size) { | |
467 | dev_dbg(codec->dev, "All transfers scheduled\n"); | |
468 | xfer->done = &done; | |
469 | } | |
470 | ||
471 | ret = spi_async(spi, &xfer->m); | |
472 | if (ret != 0) { | |
473 | dev_err(codec->dev, "Write failed: %d\n", ret); | |
474 | goto abort1; | |
475 | } | |
476 | ||
477 | if (wm0010->boot_failed) { | |
478 | dev_dbg(codec->dev, "Boot fail!\n"); | |
479 | ret = -EINVAL; | |
480 | goto abort1; | |
481 | } | |
482 | } | |
483 | ||
484 | wait_for_completion(&done); | |
485 | ||
486 | ret = 0; | |
487 | ||
488 | abort1: | |
489 | while (!list_empty(&xfer_list)) { | |
490 | xfer = list_first_entry(&xfer_list, struct wm0010_boot_xfer, | |
491 | list); | |
492 | kfree(xfer->t.rx_buf); | |
493 | kfree(xfer->t.tx_buf); | |
494 | list_del(&xfer->list); | |
495 | kfree(xfer); | |
496 | } | |
497 | ||
498 | abort: | |
499 | release_firmware(fw); | |
500 | return ret; | |
501 | } | |
502 | ||
3f5475df SL |
503 | static int wm0010_stage2_load(struct snd_soc_codec *codec) |
504 | { | |
505 | struct spi_device *spi = to_spi_device(codec->dev); | |
506 | struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec); | |
507 | const struct firmware *fw; | |
508 | struct spi_message m; | |
509 | struct spi_transfer t; | |
510 | u32 *img; | |
511 | u8 *out; | |
512 | int i; | |
513 | int ret = 0; | |
514 | ||
515 | ret = request_firmware(&fw, "wm0010_stage2.bin", codec->dev); | |
516 | if (ret != 0) { | |
517 | dev_err(codec->dev, "Failed to request stage2 loader: %d\n", | |
518 | ret); | |
519 | return ret; | |
520 | } | |
521 | ||
522 | dev_dbg(codec->dev, "Downloading %zu byte stage 2 loader\n", fw->size); | |
523 | ||
524 | /* Copy to local buffer first as vmalloc causes problems for dma */ | |
525 | img = kzalloc(fw->size, GFP_KERNEL); | |
526 | if (!img) { | |
527 | dev_err(codec->dev, "Failed to allocate image buffer\n"); | |
528 | ret = -ENOMEM; | |
529 | goto abort2; | |
530 | } | |
531 | ||
532 | out = kzalloc(fw->size, GFP_KERNEL); | |
533 | if (!out) { | |
534 | dev_err(codec->dev, "Failed to allocate output buffer\n"); | |
535 | ret = -ENOMEM; | |
536 | goto abort1; | |
537 | } | |
538 | ||
539 | memcpy(img, &fw->data[0], fw->size); | |
540 | ||
541 | spi_message_init(&m); | |
542 | memset(&t, 0, sizeof(t)); | |
543 | t.rx_buf = out; | |
544 | t.tx_buf = img; | |
545 | t.len = fw->size; | |
546 | t.bits_per_word = 8; | |
547 | t.speed_hz = wm0010->sysclk / 10; | |
548 | spi_message_add_tail(&t, &m); | |
549 | ||
550 | dev_dbg(codec->dev, "Starting initial download at %dHz\n", | |
551 | t.speed_hz); | |
552 | ||
553 | ret = spi_sync(spi, &m); | |
554 | if (ret != 0) { | |
555 | dev_err(codec->dev, "Initial download failed: %d\n", ret); | |
556 | goto abort; | |
557 | } | |
558 | ||
559 | /* Look for errors from the boot ROM */ | |
560 | for (i = 0; i < fw->size; i++) { | |
561 | if (out[i] != 0x55) { | |
562 | dev_err(codec->dev, "Boot ROM error: %x in %d\n", | |
563 | out[i], i); | |
564 | wm0010_mark_boot_failure(wm0010); | |
565 | ret = -EBUSY; | |
566 | goto abort; | |
567 | } | |
568 | } | |
569 | abort: | |
570 | kfree(out); | |
571 | abort1: | |
572 | kfree(img); | |
573 | abort2: | |
574 | release_firmware(fw); | |
575 | ||
576 | return ret; | |
577 | } | |
578 | ||
8f7d52af SL |
579 | static int wm0010_boot(struct snd_soc_codec *codec) |
580 | { | |
581 | struct spi_device *spi = to_spi_device(codec->dev); | |
582 | struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec); | |
583 | unsigned long flags; | |
584 | int ret; | |
585 | const struct firmware *fw; | |
e3523e01 DP |
586 | struct spi_message m; |
587 | struct spi_transfer t; | |
588 | struct dfw_pllrec pll_rec; | |
3f5475df | 589 | u32 *p, len; |
e3523e01 DP |
590 | u64 *img_swap; |
591 | u8 *out; | |
e3523e01 DP |
592 | int i; |
593 | ||
594 | spin_lock_irqsave(&wm0010->irq_lock, flags); | |
595 | if (wm0010->state != WM0010_POWER_OFF) | |
596 | dev_warn(wm0010->dev, "DSP already powered up!\n"); | |
597 | spin_unlock_irqrestore(&wm0010->irq_lock, flags); | |
598 | ||
599 | if (wm0010->sysclk > 26000000) { | |
600 | dev_err(codec->dev, "Max DSP clock frequency is 26MHz\n"); | |
601 | ret = -ECANCELED; | |
602 | goto err; | |
603 | } | |
604 | ||
e3523e01 DP |
605 | mutex_lock(&wm0010->lock); |
606 | wm0010->pll_running = false; | |
607 | ||
608 | dev_dbg(codec->dev, "max_spi_freq: %d\n", wm0010->max_spi_freq); | |
609 | ||
610 | ret = regulator_bulk_enable(ARRAY_SIZE(wm0010->core_supplies), | |
611 | wm0010->core_supplies); | |
612 | if (ret != 0) { | |
613 | dev_err(&spi->dev, "Failed to enable core supplies: %d\n", | |
614 | ret); | |
615 | mutex_unlock(&wm0010->lock); | |
616 | goto err; | |
617 | } | |
618 | ||
619 | ret = regulator_enable(wm0010->dbvdd); | |
620 | if (ret != 0) { | |
621 | dev_err(&spi->dev, "Failed to enable DBVDD: %d\n", ret); | |
622 | goto err_core; | |
623 | } | |
624 | ||
625 | /* Release reset */ | |
fff00cbc | 626 | gpio_set_value_cansleep(wm0010->gpio_reset, !wm0010->gpio_reset_value); |
e3523e01 DP |
627 | spin_lock_irqsave(&wm0010->irq_lock, flags); |
628 | wm0010->state = WM0010_OUT_OF_RESET; | |
629 | spin_unlock_irqrestore(&wm0010->irq_lock, flags); | |
630 | ||
631 | /* First the bootloader */ | |
632 | ret = request_firmware(&fw, "wm0010_stage2.bin", codec->dev); | |
633 | if (ret != 0) { | |
634 | dev_err(codec->dev, "Failed to request stage2 loader: %d\n", | |
635 | ret); | |
636 | goto abort; | |
637 | } | |
638 | ||
639 | if (!wait_for_completion_timeout(&wm0010->boot_completion, | |
631fcab2 | 640 | msecs_to_jiffies(20))) |
e3523e01 DP |
641 | dev_err(codec->dev, "Failed to get interrupt from DSP\n"); |
642 | ||
643 | spin_lock_irqsave(&wm0010->irq_lock, flags); | |
644 | wm0010->state = WM0010_BOOTROM; | |
645 | spin_unlock_irqrestore(&wm0010->irq_lock, flags); | |
646 | ||
3f5475df SL |
647 | ret = wm0010_stage2_load(codec); |
648 | if (ret) | |
e3523e01 | 649 | goto abort; |
e3523e01 DP |
650 | |
651 | if (!wait_for_completion_timeout(&wm0010->boot_completion, | |
631fcab2 | 652 | msecs_to_jiffies(20))) |
e3523e01 DP |
653 | dev_err(codec->dev, "Failed to get interrupt from DSP loader.\n"); |
654 | ||
655 | spin_lock_irqsave(&wm0010->irq_lock, flags); | |
656 | wm0010->state = WM0010_STAGE2; | |
657 | spin_unlock_irqrestore(&wm0010->irq_lock, flags); | |
658 | ||
659 | /* Only initialise PLL if max_spi_freq initialised */ | |
660 | if (wm0010->max_spi_freq) { | |
661 | ||
662 | /* Initialise a PLL record */ | |
663 | memset(&pll_rec, 0, sizeof(pll_rec)); | |
664 | pll_rec.command = DFW_CMD_PLL; | |
665 | pll_rec.length = (sizeof(pll_rec) - 8); | |
666 | ||
667 | /* On wm0010 only the CLKCTRL1 value is used */ | |
668 | pll_rec.clkctrl1 = wm0010->pll_clkctrl1; | |
669 | ||
670 | len = pll_rec.length + 8; | |
671 | out = kzalloc(len, GFP_KERNEL); | |
672 | if (!out) { | |
673 | dev_err(codec->dev, | |
674 | "Failed to allocate RX buffer\n"); | |
675 | goto abort; | |
676 | } | |
677 | ||
678 | img_swap = kzalloc(len, GFP_KERNEL); | |
679 | if (!img_swap) { | |
680 | dev_err(codec->dev, | |
681 | "Failed to allocate image buffer\n"); | |
682 | goto abort; | |
683 | } | |
684 | ||
685 | /* We need to re-order for 0010 */ | |
686 | byte_swap_64((u64 *)&pll_rec, img_swap, len); | |
687 | ||
688 | spi_message_init(&m); | |
689 | memset(&t, 0, sizeof(t)); | |
690 | t.rx_buf = out; | |
691 | t.tx_buf = img_swap; | |
692 | t.len = len; | |
693 | t.bits_per_word = 8; | |
694 | t.speed_hz = wm0010->sysclk / 6; | |
695 | spi_message_add_tail(&t, &m); | |
696 | ||
697 | ret = spi_sync(spi, &m); | |
698 | if (ret != 0) { | |
699 | dev_err(codec->dev, "First PLL write failed: %d\n", ret); | |
700 | goto abort; | |
701 | } | |
702 | ||
703 | /* Use a second send of the message to get the return status */ | |
704 | ret = spi_sync(spi, &m); | |
705 | if (ret != 0) { | |
706 | dev_err(codec->dev, "Second PLL write failed: %d\n", ret); | |
707 | goto abort; | |
708 | } | |
709 | ||
710 | p = (u32 *)out; | |
711 | ||
712 | /* Look for PLL active code from the DSP */ | |
713 | for (i = 0; i < len / 4; i++) { | |
714 | if (*p == 0x0e00ed0f) { | |
715 | dev_dbg(codec->dev, "PLL packet received\n"); | |
716 | wm0010->pll_running = true; | |
717 | break; | |
718 | } | |
719 | p++; | |
720 | } | |
721 | ||
722 | kfree(img_swap); | |
723 | kfree(out); | |
724 | } else | |
725 | dev_dbg(codec->dev, "Not enabling DSP PLL."); | |
726 | ||
8f7d52af | 727 | ret = wm0010_firmware_load("wm0010.dfw", codec); |
e3523e01 | 728 | |
8f7d52af | 729 | if (ret != 0) |
e3523e01 | 730 | goto abort; |
e3523e01 DP |
731 | |
732 | spin_lock_irqsave(&wm0010->irq_lock, flags); | |
733 | wm0010->state = WM0010_FIRMWARE; | |
734 | spin_unlock_irqrestore(&wm0010->irq_lock, flags); | |
735 | ||
736 | mutex_unlock(&wm0010->lock); | |
737 | ||
e3523e01 DP |
738 | return 0; |
739 | ||
740 | abort: | |
741 | /* Put the chip back into reset */ | |
742 | wm0010_halt(codec); | |
743 | mutex_unlock(&wm0010->lock); | |
744 | return ret; | |
4f3ad795 | 745 | |
e3523e01 | 746 | err_core: |
4f3ad795 | 747 | mutex_unlock(&wm0010->lock); |
e3523e01 DP |
748 | regulator_bulk_disable(ARRAY_SIZE(wm0010->core_supplies), |
749 | wm0010->core_supplies); | |
750 | err: | |
751 | return ret; | |
752 | } | |
753 | ||
754 | static int wm0010_set_bias_level(struct snd_soc_codec *codec, | |
755 | enum snd_soc_bias_level level) | |
756 | { | |
757 | struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec); | |
758 | ||
759 | switch (level) { | |
760 | case SND_SOC_BIAS_ON: | |
761 | if (codec->dapm.bias_level == SND_SOC_BIAS_PREPARE) | |
762 | wm0010_boot(codec); | |
763 | break; | |
764 | case SND_SOC_BIAS_PREPARE: | |
765 | break; | |
766 | case SND_SOC_BIAS_STANDBY: | |
767 | if (codec->dapm.bias_level == SND_SOC_BIAS_PREPARE) { | |
768 | mutex_lock(&wm0010->lock); | |
769 | wm0010_halt(codec); | |
770 | mutex_unlock(&wm0010->lock); | |
771 | } | |
772 | break; | |
773 | case SND_SOC_BIAS_OFF: | |
774 | break; | |
775 | } | |
776 | ||
777 | codec->dapm.bias_level = level; | |
778 | ||
779 | return 0; | |
780 | } | |
781 | ||
782 | static int wm0010_set_sysclk(struct snd_soc_codec *codec, int source, | |
783 | int clk_id, unsigned int freq, int dir) | |
784 | { | |
785 | struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec); | |
786 | unsigned int i; | |
787 | ||
788 | wm0010->sysclk = freq; | |
789 | ||
790 | if (freq < pll_clock_map[ARRAY_SIZE(pll_clock_map)-1].max_sysclk) { | |
791 | wm0010->max_spi_freq = 0; | |
792 | } else { | |
793 | for (i = 0; i < ARRAY_SIZE(pll_clock_map); i++) | |
794 | if (freq >= pll_clock_map[i].max_sysclk) | |
795 | break; | |
796 | ||
797 | wm0010->max_spi_freq = pll_clock_map[i].max_pll_spi_speed; | |
798 | wm0010->pll_clkctrl1 = pll_clock_map[i].pll_clkctrl1; | |
799 | } | |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
804 | static int wm0010_probe(struct snd_soc_codec *codec); | |
805 | ||
806 | static struct snd_soc_codec_driver soc_codec_dev_wm0010 = { | |
807 | .probe = wm0010_probe, | |
808 | .set_bias_level = wm0010_set_bias_level, | |
809 | .set_sysclk = wm0010_set_sysclk, | |
d3fd716e | 810 | .idle_bias_off = true, |
e3523e01 | 811 | |
1470bfac MB |
812 | .dapm_widgets = wm0010_dapm_widgets, |
813 | .num_dapm_widgets = ARRAY_SIZE(wm0010_dapm_widgets), | |
e3523e01 DP |
814 | .dapm_routes = wm0010_dapm_routes, |
815 | .num_dapm_routes = ARRAY_SIZE(wm0010_dapm_routes), | |
816 | }; | |
817 | ||
6df31986 | 818 | #define WM0010_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) |
e3523e01 DP |
819 | #define WM0010_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |\ |
820 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE |\ | |
821 | SNDRV_PCM_FMTBIT_S32_LE) | |
822 | ||
823 | static struct snd_soc_dai_driver wm0010_dai[] = { | |
824 | { | |
825 | .name = "wm0010-sdi1", | |
826 | .playback = { | |
827 | .stream_name = "SDI1 Playback", | |
828 | .channels_min = 1, | |
829 | .channels_max = 2, | |
830 | .rates = WM0010_RATES, | |
831 | .formats = WM0010_FORMATS, | |
832 | }, | |
833 | .capture = { | |
834 | .stream_name = "SDI1 Capture", | |
835 | .channels_min = 1, | |
836 | .channels_max = 2, | |
837 | .rates = WM0010_RATES, | |
838 | .formats = WM0010_FORMATS, | |
839 | }, | |
840 | }, | |
841 | { | |
842 | .name = "wm0010-sdi2", | |
843 | .playback = { | |
844 | .stream_name = "SDI2 Playback", | |
845 | .channels_min = 1, | |
846 | .channels_max = 2, | |
847 | .rates = WM0010_RATES, | |
848 | .formats = WM0010_FORMATS, | |
849 | }, | |
850 | .capture = { | |
851 | .stream_name = "SDI2 Capture", | |
852 | .channels_min = 1, | |
853 | .channels_max = 2, | |
854 | .rates = WM0010_RATES, | |
855 | .formats = WM0010_FORMATS, | |
856 | }, | |
857 | }, | |
858 | }; | |
859 | ||
860 | static irqreturn_t wm0010_irq(int irq, void *data) | |
861 | { | |
862 | struct wm0010_priv *wm0010 = data; | |
863 | ||
864 | switch (wm0010->state) { | |
e3523e01 DP |
865 | case WM0010_OUT_OF_RESET: |
866 | case WM0010_BOOTROM: | |
867 | case WM0010_STAGE2: | |
868 | spin_lock(&wm0010->irq_lock); | |
869 | complete(&wm0010->boot_completion); | |
870 | spin_unlock(&wm0010->irq_lock); | |
871 | return IRQ_HANDLED; | |
872 | default: | |
873 | return IRQ_NONE; | |
874 | } | |
875 | ||
876 | return IRQ_NONE; | |
877 | } | |
878 | ||
879 | static int wm0010_probe(struct snd_soc_codec *codec) | |
880 | { | |
881 | struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec); | |
32c50a31 MB |
882 | |
883 | wm0010->codec = codec; | |
884 | ||
885 | return 0; | |
886 | } | |
887 | ||
7a79e94e | 888 | static int wm0010_spi_probe(struct spi_device *spi) |
32c50a31 | 889 | { |
e3523e01 DP |
890 | unsigned long gpio_flags; |
891 | int ret; | |
892 | int trigger; | |
893 | int irq; | |
32c50a31 | 894 | struct wm0010_priv *wm0010; |
e3523e01 | 895 | |
32c50a31 MB |
896 | wm0010 = devm_kzalloc(&spi->dev, sizeof(*wm0010), |
897 | GFP_KERNEL); | |
898 | if (!wm0010) | |
899 | return -ENOMEM; | |
900 | ||
901 | mutex_init(&wm0010->lock); | |
902 | spin_lock_init(&wm0010->irq_lock); | |
903 | ||
904 | spi_set_drvdata(spi, wm0010); | |
905 | wm0010->dev = &spi->dev; | |
906 | ||
907 | if (dev_get_platdata(&spi->dev)) | |
908 | memcpy(&wm0010->pdata, dev_get_platdata(&spi->dev), | |
909 | sizeof(wm0010->pdata)); | |
e3523e01 DP |
910 | |
911 | init_completion(&wm0010->boot_completion); | |
912 | ||
913 | wm0010->core_supplies[0].supply = "AVDD"; | |
914 | wm0010->core_supplies[1].supply = "DCVDD"; | |
915 | ret = devm_regulator_bulk_get(wm0010->dev, ARRAY_SIZE(wm0010->core_supplies), | |
916 | wm0010->core_supplies); | |
917 | if (ret != 0) { | |
918 | dev_err(wm0010->dev, "Failed to obtain core supplies: %d\n", | |
919 | ret); | |
920 | return ret; | |
921 | } | |
922 | ||
923 | wm0010->dbvdd = devm_regulator_get(wm0010->dev, "DBVDD"); | |
924 | if (IS_ERR(wm0010->dbvdd)) { | |
925 | ret = PTR_ERR(wm0010->dbvdd); | |
926 | dev_err(wm0010->dev, "Failed to obtain DBVDD: %d\n", ret); | |
927 | return ret; | |
928 | } | |
929 | ||
930 | if (wm0010->pdata.gpio_reset) { | |
931 | wm0010->gpio_reset = wm0010->pdata.gpio_reset; | |
932 | ||
933 | if (wm0010->pdata.reset_active_high) | |
934 | wm0010->gpio_reset_value = 1; | |
935 | else | |
936 | wm0010->gpio_reset_value = 0; | |
937 | ||
938 | if (wm0010->gpio_reset_value) | |
939 | gpio_flags = GPIOF_OUT_INIT_HIGH; | |
940 | else | |
941 | gpio_flags = GPIOF_OUT_INIT_LOW; | |
942 | ||
943 | ret = devm_gpio_request_one(wm0010->dev, wm0010->gpio_reset, | |
944 | gpio_flags, "wm0010 reset"); | |
945 | if (ret < 0) { | |
946 | dev_err(wm0010->dev, | |
947 | "Failed to request GPIO for DSP reset: %d\n", | |
948 | ret); | |
949 | return ret; | |
950 | } | |
951 | } else { | |
952 | dev_err(wm0010->dev, "No reset GPIO configured\n"); | |
32c50a31 | 953 | return -EINVAL; |
e3523e01 DP |
954 | } |
955 | ||
9bb68444 MB |
956 | wm0010->state = WM0010_POWER_OFF; |
957 | ||
e3523e01 DP |
958 | irq = spi->irq; |
959 | if (wm0010->pdata.irq_flags) | |
960 | trigger = wm0010->pdata.irq_flags; | |
961 | else | |
962 | trigger = IRQF_TRIGGER_FALLING; | |
963 | trigger |= IRQF_ONESHOT; | |
964 | ||
58d46832 | 965 | ret = request_threaded_irq(irq, NULL, wm0010_irq, trigger | IRQF_ONESHOT, |
e3523e01 | 966 | "wm0010", wm0010); |
32c50a31 | 967 | if (ret) { |
e3523e01 DP |
968 | dev_err(wm0010->dev, "Failed to request IRQ %d: %d\n", |
969 | irq, ret); | |
32c50a31 MB |
970 | return ret; |
971 | } | |
e3523e01 DP |
972 | wm0010->irq = irq; |
973 | ||
974 | if (spi->max_speed_hz) | |
975 | wm0010->board_max_spi_speed = spi->max_speed_hz; | |
976 | else | |
977 | wm0010->board_max_spi_speed = 0; | |
978 | ||
e3523e01 DP |
979 | ret = snd_soc_register_codec(&spi->dev, |
980 | &soc_codec_dev_wm0010, wm0010_dai, | |
981 | ARRAY_SIZE(wm0010_dai)); | |
982 | if (ret < 0) | |
983 | return ret; | |
984 | ||
985 | return 0; | |
986 | } | |
987 | ||
7a79e94e | 988 | static int wm0010_spi_remove(struct spi_device *spi) |
e3523e01 DP |
989 | { |
990 | struct wm0010_priv *wm0010 = spi_get_drvdata(spi); | |
991 | ||
992 | snd_soc_unregister_codec(&spi->dev); | |
993 | ||
5afe5bfe MB |
994 | gpio_set_value_cansleep(wm0010->gpio_reset, |
995 | wm0010->gpio_reset_value); | |
e3523e01 DP |
996 | |
997 | if (wm0010->irq) | |
998 | free_irq(wm0010->irq, wm0010); | |
999 | ||
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | static struct spi_driver wm0010_spi_driver = { | |
1004 | .driver = { | |
1005 | .name = "wm0010", | |
1006 | .bus = &spi_bus_type, | |
1007 | .owner = THIS_MODULE, | |
1008 | }, | |
1009 | .probe = wm0010_spi_probe, | |
7a79e94e | 1010 | .remove = wm0010_spi_remove, |
e3523e01 DP |
1011 | }; |
1012 | ||
1013 | module_spi_driver(wm0010_spi_driver); | |
1014 | ||
1015 | MODULE_DESCRIPTION("ASoC WM0010 driver"); | |
1016 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
1017 | MODULE_LICENSE("GPL"); |