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