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Merge remote-tracking branch 'asoc/topic/core' into asoc-next
[~shefty/rdma-dev.git] / drivers / mfd / arizona-core.c
1 /*
2  * Arizona core driver
3  *
4  * Copyright 2012 Wolfson Microelectronics plc
5  *
6  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  */
12
13 #include <linux/delay.h>
14 #include <linux/err.h>
15 #include <linux/gpio.h>
16 #include <linux/interrupt.h>
17 #include <linux/mfd/core.h>
18 #include <linux/module.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/regmap.h>
21 #include <linux/regulator/consumer.h>
22 #include <linux/slab.h>
23
24 #include <linux/mfd/arizona/core.h>
25 #include <linux/mfd/arizona/registers.h>
26
27 #include "arizona.h"
28
29 static const char *wm5102_core_supplies[] = {
30         "AVDD",
31         "DBVDD1",
32 };
33
34 int arizona_clk32k_enable(struct arizona *arizona)
35 {
36         int ret = 0;
37
38         mutex_lock(&arizona->clk_lock);
39
40         arizona->clk32k_ref++;
41
42         if (arizona->clk32k_ref == 1)
43                 ret = regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
44                                          ARIZONA_CLK_32K_ENA,
45                                          ARIZONA_CLK_32K_ENA);
46
47         if (ret != 0)
48                 arizona->clk32k_ref--;
49
50         mutex_unlock(&arizona->clk_lock);
51
52         return ret;
53 }
54 EXPORT_SYMBOL_GPL(arizona_clk32k_enable);
55
56 int arizona_clk32k_disable(struct arizona *arizona)
57 {
58         int ret = 0;
59
60         mutex_lock(&arizona->clk_lock);
61
62         BUG_ON(arizona->clk32k_ref <= 0);
63
64         arizona->clk32k_ref--;
65
66         if (arizona->clk32k_ref == 0)
67                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
68                                    ARIZONA_CLK_32K_ENA, 0);
69
70         mutex_unlock(&arizona->clk_lock);
71
72         return ret;
73 }
74 EXPORT_SYMBOL_GPL(arizona_clk32k_disable);
75
76 static irqreturn_t arizona_clkgen_err(int irq, void *data)
77 {
78         struct arizona *arizona = data;
79
80         dev_err(arizona->dev, "CLKGEN error\n");
81
82         return IRQ_HANDLED;
83 }
84
85 static irqreturn_t arizona_underclocked(int irq, void *data)
86 {
87         struct arizona *arizona = data;
88         unsigned int val;
89         int ret;
90
91         ret = regmap_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_8,
92                           &val);
93         if (ret != 0) {
94                 dev_err(arizona->dev, "Failed to read underclock status: %d\n",
95                         ret);
96                 return IRQ_NONE;
97         }
98
99         if (val & ARIZONA_AIF3_UNDERCLOCKED_STS)
100                 dev_err(arizona->dev, "AIF3 underclocked\n");
101         if (val & ARIZONA_AIF2_UNDERCLOCKED_STS)
102                 dev_err(arizona->dev, "AIF2 underclocked\n");
103         if (val & ARIZONA_AIF1_UNDERCLOCKED_STS)
104                 dev_err(arizona->dev, "AIF1 underclocked\n");
105         if (val & ARIZONA_ISRC2_UNDERCLOCKED_STS)
106                 dev_err(arizona->dev, "ISRC2 underclocked\n");
107         if (val & ARIZONA_ISRC1_UNDERCLOCKED_STS)
108                 dev_err(arizona->dev, "ISRC1 underclocked\n");
109         if (val & ARIZONA_FX_UNDERCLOCKED_STS)
110                 dev_err(arizona->dev, "FX underclocked\n");
111         if (val & ARIZONA_ASRC_UNDERCLOCKED_STS)
112                 dev_err(arizona->dev, "ASRC underclocked\n");
113         if (val & ARIZONA_DAC_UNDERCLOCKED_STS)
114                 dev_err(arizona->dev, "DAC underclocked\n");
115         if (val & ARIZONA_ADC_UNDERCLOCKED_STS)
116                 dev_err(arizona->dev, "ADC underclocked\n");
117         if (val & ARIZONA_MIXER_UNDERCLOCKED_STS)
118                 dev_err(arizona->dev, "Mixer underclocked\n");
119
120         return IRQ_HANDLED;
121 }
122
123 static irqreturn_t arizona_overclocked(int irq, void *data)
124 {
125         struct arizona *arizona = data;
126         unsigned int val[2];
127         int ret;
128         
129         ret = regmap_bulk_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_6,
130                                &val[0], 2);
131         if (ret != 0) {
132                 dev_err(arizona->dev, "Failed to read overclock status: %d\n",
133                         ret);
134                 return IRQ_NONE;
135         }
136
137         if (val[0] & ARIZONA_PWM_OVERCLOCKED_STS)
138                 dev_err(arizona->dev, "PWM overclocked\n");
139         if (val[0] & ARIZONA_FX_CORE_OVERCLOCKED_STS)
140                 dev_err(arizona->dev, "FX core overclocked\n");
141         if (val[0] & ARIZONA_DAC_SYS_OVERCLOCKED_STS)
142                 dev_err(arizona->dev, "DAC SYS overclocked\n");
143         if (val[0] & ARIZONA_DAC_WARP_OVERCLOCKED_STS)
144                 dev_err(arizona->dev, "DAC WARP overclocked\n");
145         if (val[0] & ARIZONA_ADC_OVERCLOCKED_STS)
146                 dev_err(arizona->dev, "ADC overclocked\n");
147         if (val[0] & ARIZONA_MIXER_OVERCLOCKED_STS)
148                 dev_err(arizona->dev, "Mixer overclocked\n");
149         if (val[0] & ARIZONA_AIF3_SYNC_OVERCLOCKED_STS)
150                 dev_err(arizona->dev, "AIF3 overclocked\n");
151         if (val[0] & ARIZONA_AIF2_SYNC_OVERCLOCKED_STS)
152                 dev_err(arizona->dev, "AIF2 overclocked\n");
153         if (val[0] & ARIZONA_AIF1_SYNC_OVERCLOCKED_STS)
154                 dev_err(arizona->dev, "AIF1 overclocked\n");
155         if (val[0] & ARIZONA_PAD_CTRL_OVERCLOCKED_STS)
156                 dev_err(arizona->dev, "Pad control overclocked\n");
157
158         if (val[1] & ARIZONA_SLIMBUS_SUBSYS_OVERCLOCKED_STS)
159                 dev_err(arizona->dev, "Slimbus subsystem overclocked\n");
160         if (val[1] & ARIZONA_SLIMBUS_ASYNC_OVERCLOCKED_STS)
161                 dev_err(arizona->dev, "Slimbus async overclocked\n");
162         if (val[1] & ARIZONA_SLIMBUS_SYNC_OVERCLOCKED_STS)
163                 dev_err(arizona->dev, "Slimbus sync overclocked\n");
164         if (val[1] & ARIZONA_ASRC_ASYNC_SYS_OVERCLOCKED_STS)
165                 dev_err(arizona->dev, "ASRC async system overclocked\n");
166         if (val[1] & ARIZONA_ASRC_ASYNC_WARP_OVERCLOCKED_STS)
167                 dev_err(arizona->dev, "ASRC async WARP overclocked\n");
168         if (val[1] & ARIZONA_ASRC_SYNC_SYS_OVERCLOCKED_STS)
169                 dev_err(arizona->dev, "ASRC sync system overclocked\n");
170         if (val[1] & ARIZONA_ASRC_SYNC_WARP_OVERCLOCKED_STS)
171                 dev_err(arizona->dev, "ASRC sync WARP overclocked\n");
172         if (val[1] & ARIZONA_ADSP2_1_OVERCLOCKED_STS)
173                 dev_err(arizona->dev, "DSP1 overclocked\n");
174         if (val[1] & ARIZONA_ISRC2_OVERCLOCKED_STS)
175                 dev_err(arizona->dev, "ISRC2 overclocked\n");
176         if (val[1] & ARIZONA_ISRC1_OVERCLOCKED_STS)
177                 dev_err(arizona->dev, "ISRC1 overclocked\n");
178
179         return IRQ_HANDLED;
180 }
181
182 static int arizona_wait_for_boot(struct arizona *arizona)
183 {
184         unsigned int reg;
185         int ret, i;
186
187         /*
188          * We can't use an interrupt as we need to runtime resume to do so,
189          * we won't race with the interrupt handler as it'll be blocked on
190          * runtime resume.
191          */
192         for (i = 0; i < 5; i++) {
193                 msleep(1);
194
195                 ret = regmap_read(arizona->regmap,
196                                   ARIZONA_INTERRUPT_RAW_STATUS_5, &reg);
197                 if (ret != 0) {
198                         dev_err(arizona->dev, "Failed to read boot state: %d\n",
199                                 ret);
200                         continue;
201                 }
202
203                 if (reg & ARIZONA_BOOT_DONE_STS)
204                         break;
205         }
206
207         if (reg & ARIZONA_BOOT_DONE_STS) {
208                 regmap_write(arizona->regmap, ARIZONA_INTERRUPT_STATUS_5,
209                              ARIZONA_BOOT_DONE_STS);
210         } else {
211                 dev_err(arizona->dev, "Device boot timed out: %x\n", reg);
212                 return -ETIMEDOUT;
213         }
214
215         pm_runtime_mark_last_busy(arizona->dev);
216
217         return 0;
218 }
219
220 #ifdef CONFIG_PM_RUNTIME
221 static int arizona_runtime_resume(struct device *dev)
222 {
223         struct arizona *arizona = dev_get_drvdata(dev);
224         int ret;
225
226         dev_dbg(arizona->dev, "Leaving AoD mode\n");
227
228         ret = regulator_enable(arizona->dcvdd);
229         if (ret != 0) {
230                 dev_err(arizona->dev, "Failed to enable DCVDD: %d\n", ret);
231                 return ret;
232         }
233
234         regcache_cache_only(arizona->regmap, false);
235
236         ret = arizona_wait_for_boot(arizona);
237         if (ret != 0) {
238                 regulator_disable(arizona->dcvdd);
239                 return ret;
240         }
241
242         regcache_sync(arizona->regmap);
243
244         return 0;
245 }
246
247 static int arizona_runtime_suspend(struct device *dev)
248 {
249         struct arizona *arizona = dev_get_drvdata(dev);
250
251         dev_dbg(arizona->dev, "Entering AoD mode\n");
252
253         regulator_disable(arizona->dcvdd);
254         regcache_cache_only(arizona->regmap, true);
255         regcache_mark_dirty(arizona->regmap);
256
257         return 0;
258 }
259 #endif
260
261 const struct dev_pm_ops arizona_pm_ops = {
262         SET_RUNTIME_PM_OPS(arizona_runtime_suspend,
263                            arizona_runtime_resume,
264                            NULL)
265 };
266 EXPORT_SYMBOL_GPL(arizona_pm_ops);
267
268 static struct mfd_cell early_devs[] = {
269         { .name = "arizona-ldo1" },
270 };
271
272 static struct mfd_cell wm5102_devs[] = {
273         { .name = "arizona-extcon" },
274         { .name = "arizona-gpio" },
275         { .name = "arizona-haptics" },
276         { .name = "arizona-micsupp" },
277         { .name = "arizona-pwm" },
278         { .name = "wm5102-codec" },
279 };
280
281 static struct mfd_cell wm5110_devs[] = {
282         { .name = "arizona-extcon" },
283         { .name = "arizona-gpio" },
284         { .name = "arizona-haptics" },
285         { .name = "arizona-micsupp" },
286         { .name = "arizona-pwm" },
287         { .name = "wm5110-codec" },
288 };
289
290 int __devinit arizona_dev_init(struct arizona *arizona)
291 {
292         struct device *dev = arizona->dev;
293         const char *type_name;
294         unsigned int reg, val;
295         int ret, i;
296
297         dev_set_drvdata(arizona->dev, arizona);
298         mutex_init(&arizona->clk_lock);
299
300         if (dev_get_platdata(arizona->dev))
301                 memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
302                        sizeof(arizona->pdata));
303
304         regcache_cache_only(arizona->regmap, true);
305
306         switch (arizona->type) {
307         case WM5102:
308         case WM5110:
309                 for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
310                         arizona->core_supplies[i].supply
311                                 = wm5102_core_supplies[i];
312                 arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
313                 break;
314         default:
315                 dev_err(arizona->dev, "Unknown device type %d\n",
316                         arizona->type);
317                 return -EINVAL;
318         }
319
320         ret = mfd_add_devices(arizona->dev, -1, early_devs,
321                               ARRAY_SIZE(early_devs), NULL, 0, NULL);
322         if (ret != 0) {
323                 dev_err(dev, "Failed to add early children: %d\n", ret);
324                 return ret;
325         }
326
327         ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
328                                       arizona->core_supplies);
329         if (ret != 0) {
330                 dev_err(dev, "Failed to request core supplies: %d\n",
331                         ret);
332                 goto err_early;
333         }
334
335         arizona->dcvdd = devm_regulator_get(arizona->dev, "DCVDD");
336         if (IS_ERR(arizona->dcvdd)) {
337                 ret = PTR_ERR(arizona->dcvdd);
338                 dev_err(dev, "Failed to request DCVDD: %d\n", ret);
339                 goto err_early;
340         }
341
342         ret = regulator_bulk_enable(arizona->num_core_supplies,
343                                     arizona->core_supplies);
344         if (ret != 0) {
345                 dev_err(dev, "Failed to enable core supplies: %d\n",
346                         ret);
347                 goto err_early;
348         }
349
350         ret = regulator_enable(arizona->dcvdd);
351         if (ret != 0) {
352                 dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
353                 goto err_enable;
354         }
355
356         if (arizona->pdata.reset) {
357                 /* Start out with /RESET low to put the chip into reset */
358                 ret = gpio_request_one(arizona->pdata.reset,
359                                        GPIOF_DIR_OUT | GPIOF_INIT_LOW,
360                                        "arizona /RESET");
361                 if (ret != 0) {
362                         dev_err(dev, "Failed to request /RESET: %d\n", ret);
363                         goto err_dcvdd;
364                 }
365
366                 gpio_set_value_cansleep(arizona->pdata.reset, 1);
367         }
368
369         regcache_cache_only(arizona->regmap, false);
370
371         ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, &reg);
372         if (ret != 0) {
373                 dev_err(dev, "Failed to read ID register: %d\n", ret);
374                 goto err_reset;
375         }
376
377         ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
378                           &arizona->rev);
379         if (ret != 0) {
380                 dev_err(dev, "Failed to read revision register: %d\n", ret);
381                 goto err_reset;
382         }
383         arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
384
385         switch (reg) {
386 #ifdef CONFIG_MFD_WM5102
387         case 0x5102:
388                 type_name = "WM5102";
389                 if (arizona->type != WM5102) {
390                         dev_err(arizona->dev, "WM5102 registered as %d\n",
391                                 arizona->type);
392                         arizona->type = WM5102;
393                 }
394                 ret = wm5102_patch(arizona);
395                 break;
396 #endif
397 #ifdef CONFIG_MFD_WM5110
398         case 0x5110:
399                 type_name = "WM5110";
400                 if (arizona->type != WM5110) {
401                         dev_err(arizona->dev, "WM5110 registered as %d\n",
402                                 arizona->type);
403                         arizona->type = WM5110;
404                 }
405                 ret = wm5110_patch(arizona);
406                 break;
407 #endif
408         default:
409                 dev_err(arizona->dev, "Unknown device ID %x\n", reg);
410                 goto err_reset;
411         }
412
413         dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
414
415         if (ret != 0)
416                 dev_err(arizona->dev, "Failed to apply patch: %d\n", ret);
417
418         /* If we have a /RESET GPIO we'll already be reset */
419         if (!arizona->pdata.reset) {
420                 regcache_mark_dirty(arizona->regmap);
421
422                 ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
423                 if (ret != 0) {
424                         dev_err(dev, "Failed to reset device: %d\n", ret);
425                         goto err_reset;
426                 }
427
428                 ret = regcache_sync(arizona->regmap);
429                 if (ret != 0) {
430                         dev_err(dev, "Failed to sync device: %d\n", ret);
431                         goto err_reset;
432                 }
433         }
434
435         ret = arizona_wait_for_boot(arizona);
436         if (ret != 0) {
437                 dev_err(arizona->dev, "Device failed initial boot: %d\n", ret);
438                 goto err_reset;
439         }
440
441         for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
442                 if (!arizona->pdata.gpio_defaults[i])
443                         continue;
444
445                 regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
446                              arizona->pdata.gpio_defaults[i]);
447         }
448
449         pm_runtime_set_autosuspend_delay(arizona->dev, 100);
450         pm_runtime_use_autosuspend(arizona->dev);
451         pm_runtime_enable(arizona->dev);
452
453         /* Chip default */
454         if (!arizona->pdata.clk32k_src)
455                 arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
456
457         switch (arizona->pdata.clk32k_src) {
458         case ARIZONA_32KZ_MCLK1:
459         case ARIZONA_32KZ_MCLK2:
460                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
461                                    ARIZONA_CLK_32K_SRC_MASK,
462                                    arizona->pdata.clk32k_src - 1);
463                 break;
464         case ARIZONA_32KZ_NONE:
465                 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
466                                    ARIZONA_CLK_32K_SRC_MASK, 2);
467                 break;
468         default:
469                 dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
470                         arizona->pdata.clk32k_src);
471                 ret = -EINVAL;
472                 goto err_reset;
473         }
474
475         for (i = 0; i < ARIZONA_MAX_INPUT; i++) {
476                 /* Default for both is 0 so noop with defaults */
477                 val = arizona->pdata.dmic_ref[i]
478                         << ARIZONA_IN1_DMIC_SUP_SHIFT;
479                 val |= arizona->pdata.inmode[i] << ARIZONA_IN1_MODE_SHIFT;
480
481                 regmap_update_bits(arizona->regmap,
482                                    ARIZONA_IN1L_CONTROL + (i * 8),
483                                    ARIZONA_IN1_DMIC_SUP_MASK |
484                                    ARIZONA_IN1_MODE_MASK, val);
485         }
486
487         for (i = 0; i < ARIZONA_MAX_OUTPUT; i++) {
488                 /* Default is 0 so noop with defaults */
489                 if (arizona->pdata.out_mono[i])
490                         val = ARIZONA_OUT1_MONO;
491                 else
492                         val = 0;
493
494                 regmap_update_bits(arizona->regmap,
495                                    ARIZONA_OUTPUT_PATH_CONFIG_1L + (i * 8),
496                                    ARIZONA_OUT1_MONO, val);
497         }
498
499         for (i = 0; i < ARIZONA_MAX_PDM_SPK; i++) {
500                 if (arizona->pdata.spk_mute[i])
501                         regmap_update_bits(arizona->regmap,
502                                            ARIZONA_PDM_SPK1_CTRL_1 + (i * 2),
503                                            ARIZONA_SPK1_MUTE_ENDIAN_MASK |
504                                            ARIZONA_SPK1_MUTE_SEQ1_MASK,
505                                            arizona->pdata.spk_mute[i]);
506
507                 if (arizona->pdata.spk_fmt[i])
508                         regmap_update_bits(arizona->regmap,
509                                            ARIZONA_PDM_SPK1_CTRL_2 + (i * 2),
510                                            ARIZONA_SPK1_FMT_MASK,
511                                            arizona->pdata.spk_fmt[i]);
512         }
513
514         /* Set up for interrupts */
515         ret = arizona_irq_init(arizona);
516         if (ret != 0)
517                 goto err_reset;
518
519         arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
520                             arizona_clkgen_err, arizona);
521         arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
522                             arizona_overclocked, arizona);
523         arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
524                             arizona_underclocked, arizona);
525
526         switch (arizona->type) {
527         case WM5102:
528                 ret = mfd_add_devices(arizona->dev, -1, wm5102_devs,
529                                       ARRAY_SIZE(wm5102_devs), NULL, 0, NULL);
530                 break;
531         case WM5110:
532                 ret = mfd_add_devices(arizona->dev, -1, wm5110_devs,
533                                       ARRAY_SIZE(wm5110_devs), NULL, 0, NULL);
534                 break;
535         }
536
537         if (ret != 0) {
538                 dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
539                 goto err_irq;
540         }
541
542 #ifdef CONFIG_PM_RUNTIME
543         regulator_disable(arizona->dcvdd);
544 #endif
545
546         return 0;
547
548 err_irq:
549         arizona_irq_exit(arizona);
550 err_reset:
551         if (arizona->pdata.reset) {
552                 gpio_set_value_cansleep(arizona->pdata.reset, 1);
553                 gpio_free(arizona->pdata.reset);
554         }
555 err_dcvdd:
556         regulator_disable(arizona->dcvdd);
557 err_enable:
558         regulator_bulk_disable(arizona->num_core_supplies,
559                                arizona->core_supplies);
560 err_early:
561         mfd_remove_devices(dev);
562         return ret;
563 }
564 EXPORT_SYMBOL_GPL(arizona_dev_init);
565
566 int __devexit arizona_dev_exit(struct arizona *arizona)
567 {
568         mfd_remove_devices(arizona->dev);
569         arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
570         arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
571         arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
572         pm_runtime_disable(arizona->dev);
573         arizona_irq_exit(arizona);
574         return 0;
575 }
576 EXPORT_SYMBOL_GPL(arizona_dev_exit);