4 * Copyright 2012 Wolfson Microelectronics plc
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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.
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>
24 #include <linux/mfd/arizona/core.h>
25 #include <linux/mfd/arizona/registers.h>
29 static const char *wm5102_core_supplies
[] = {
34 int arizona_clk32k_enable(struct arizona
*arizona
)
38 mutex_lock(&arizona
->clk_lock
);
40 arizona
->clk32k_ref
++;
42 if (arizona
->clk32k_ref
== 1)
43 ret
= regmap_update_bits(arizona
->regmap
, ARIZONA_CLOCK_32K_1
,
48 arizona
->clk32k_ref
--;
50 mutex_unlock(&arizona
->clk_lock
);
54 EXPORT_SYMBOL_GPL(arizona_clk32k_enable
);
56 int arizona_clk32k_disable(struct arizona
*arizona
)
60 mutex_lock(&arizona
->clk_lock
);
62 BUG_ON(arizona
->clk32k_ref
<= 0);
64 arizona
->clk32k_ref
--;
66 if (arizona
->clk32k_ref
== 0)
67 regmap_update_bits(arizona
->regmap
, ARIZONA_CLOCK_32K_1
,
68 ARIZONA_CLK_32K_ENA
, 0);
70 mutex_unlock(&arizona
->clk_lock
);
74 EXPORT_SYMBOL_GPL(arizona_clk32k_disable
);
76 static irqreturn_t
arizona_clkgen_err(int irq
, void *data
)
78 struct arizona
*arizona
= data
;
80 dev_err(arizona
->dev
, "CLKGEN error\n");
85 static irqreturn_t
arizona_underclocked(int irq
, void *data
)
87 struct arizona
*arizona
= data
;
91 ret
= regmap_read(arizona
->regmap
, ARIZONA_INTERRUPT_RAW_STATUS_8
,
94 dev_err(arizona
->dev
, "Failed to read underclock status: %d\n",
99 if (val
& ARIZONA_AIF3_UNDERCLOCKED_STS
)
100 dev_err(arizona
->dev
, "AIF3 underclocked\n");
101 if (val
& ARIZONA_AIF3_UNDERCLOCKED_STS
)
102 dev_err(arizona
->dev
, "AIF3 underclocked\n");
103 if (val
& ARIZONA_AIF2_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");
123 static irqreturn_t
arizona_overclocked(int irq
, void *data
)
125 struct arizona
*arizona
= data
;
129 ret
= regmap_bulk_read(arizona
->regmap
, ARIZONA_INTERRUPT_RAW_STATUS_6
,
132 dev_err(arizona
->dev
, "Failed to read overclock status: %d\n",
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");
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");
182 static int arizona_wait_for_boot(struct arizona
*arizona
)
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
192 for (i
= 0; i
< 5; i
++) {
195 ret
= regmap_read(arizona
->regmap
,
196 ARIZONA_INTERRUPT_RAW_STATUS_5
, ®
);
198 dev_err(arizona
->dev
, "Failed to read boot state: %d\n",
203 if (reg
& ARIZONA_BOOT_DONE_STS
)
207 if (reg
& ARIZONA_BOOT_DONE_STS
) {
208 regmap_write(arizona
->regmap
, ARIZONA_INTERRUPT_STATUS_5
,
209 ARIZONA_BOOT_DONE_STS
);
211 dev_err(arizona
->dev
, "Device boot timed out: %x\n", reg
);
215 pm_runtime_mark_last_busy(arizona
->dev
);
220 #ifdef CONFIG_PM_RUNTIME
221 static int arizona_runtime_resume(struct device
*dev
)
223 struct arizona
*arizona
= dev_get_drvdata(dev
);
226 ret
= regulator_enable(arizona
->dcvdd
);
228 dev_err(arizona
->dev
, "Failed to enable DCVDD: %d\n", ret
);
232 regcache_cache_only(arizona
->regmap
, false);
234 ret
= arizona_wait_for_boot(arizona
);
236 regulator_disable(arizona
->dcvdd
);
240 regcache_sync(arizona
->regmap
);
245 static int arizona_runtime_suspend(struct device
*dev
)
247 struct arizona
*arizona
= dev_get_drvdata(dev
);
249 regulator_disable(arizona
->dcvdd
);
250 regcache_cache_only(arizona
->regmap
, true);
251 regcache_mark_dirty(arizona
->regmap
);
257 const struct dev_pm_ops arizona_pm_ops
= {
258 SET_RUNTIME_PM_OPS(arizona_runtime_suspend
,
259 arizona_runtime_resume
,
262 EXPORT_SYMBOL_GPL(arizona_pm_ops
);
264 static struct mfd_cell early_devs
[] = {
265 { .name
= "arizona-ldo1" },
268 static struct mfd_cell wm5102_devs
[] = {
269 { .name
= "arizona-extcon" },
270 { .name
= "arizona-gpio" },
271 { .name
= "arizona-micsupp" },
272 { .name
= "arizona-pwm" },
273 { .name
= "wm5102-codec" },
276 static struct mfd_cell wm5110_devs
[] = {
277 { .name
= "arizona-extcon" },
278 { .name
= "arizona-gpio" },
279 { .name
= "arizona-micsupp" },
280 { .name
= "arizona-pwm" },
281 { .name
= "wm5110-codec" },
284 int __devinit
arizona_dev_init(struct arizona
*arizona
)
286 struct device
*dev
= arizona
->dev
;
287 const char *type_name
;
288 unsigned int reg
, val
;
291 dev_set_drvdata(arizona
->dev
, arizona
);
292 mutex_init(&arizona
->clk_lock
);
294 if (dev_get_platdata(arizona
->dev
))
295 memcpy(&arizona
->pdata
, dev_get_platdata(arizona
->dev
),
296 sizeof(arizona
->pdata
));
298 regcache_cache_only(arizona
->regmap
, true);
300 switch (arizona
->type
) {
303 for (i
= 0; i
< ARRAY_SIZE(wm5102_core_supplies
); i
++)
304 arizona
->core_supplies
[i
].supply
305 = wm5102_core_supplies
[i
];
306 arizona
->num_core_supplies
= ARRAY_SIZE(wm5102_core_supplies
);
309 dev_err(arizona
->dev
, "Unknown device type %d\n",
314 ret
= mfd_add_devices(arizona
->dev
, -1, early_devs
,
315 ARRAY_SIZE(early_devs
), NULL
, 0);
317 dev_err(dev
, "Failed to add early children: %d\n", ret
);
321 ret
= devm_regulator_bulk_get(dev
, arizona
->num_core_supplies
,
322 arizona
->core_supplies
);
324 dev_err(dev
, "Failed to request core supplies: %d\n",
329 arizona
->dcvdd
= devm_regulator_get(arizona
->dev
, "DCVDD");
330 if (IS_ERR(arizona
->dcvdd
)) {
331 ret
= PTR_ERR(arizona
->dcvdd
);
332 dev_err(dev
, "Failed to request DCVDD: %d\n", ret
);
336 ret
= regulator_bulk_enable(arizona
->num_core_supplies
,
337 arizona
->core_supplies
);
339 dev_err(dev
, "Failed to enable core supplies: %d\n",
344 ret
= regulator_enable(arizona
->dcvdd
);
346 dev_err(dev
, "Failed to enable DCVDD: %d\n", ret
);
350 if (arizona
->pdata
.reset
) {
351 /* Start out with /RESET low to put the chip into reset */
352 ret
= gpio_request_one(arizona
->pdata
.reset
,
353 GPIOF_DIR_OUT
| GPIOF_INIT_LOW
,
356 dev_err(dev
, "Failed to request /RESET: %d\n", ret
);
360 gpio_set_value_cansleep(arizona
->pdata
.reset
, 1);
363 regcache_cache_only(arizona
->regmap
, false);
365 ret
= regmap_read(arizona
->regmap
, ARIZONA_SOFTWARE_RESET
, ®
);
367 dev_err(dev
, "Failed to read ID register: %d\n", ret
);
371 ret
= regmap_read(arizona
->regmap
, ARIZONA_DEVICE_REVISION
,
374 dev_err(dev
, "Failed to read revision register: %d\n", ret
);
377 arizona
->rev
&= ARIZONA_DEVICE_REVISION_MASK
;
380 #ifdef CONFIG_MFD_WM5102
382 type_name
= "WM5102";
383 if (arizona
->type
!= WM5102
) {
384 dev_err(arizona
->dev
, "WM5102 registered as %d\n",
386 arizona
->type
= WM5102
;
388 ret
= wm5102_patch(arizona
);
391 #ifdef CONFIG_MFD_WM5110
393 type_name
= "WM5110";
394 if (arizona
->type
!= WM5110
) {
395 dev_err(arizona
->dev
, "WM5110 registered as %d\n",
397 arizona
->type
= WM5110
;
399 ret
= wm5110_patch(arizona
);
403 dev_err(arizona
->dev
, "Unknown device ID %x\n", reg
);
407 dev_info(dev
, "%s revision %c\n", type_name
, arizona
->rev
+ 'A');
410 dev_err(arizona
->dev
, "Failed to apply patch: %d\n", ret
);
412 /* If we have a /RESET GPIO we'll already be reset */
413 if (!arizona
->pdata
.reset
) {
414 ret
= regmap_write(arizona
->regmap
, ARIZONA_SOFTWARE_RESET
, 0);
416 dev_err(dev
, "Failed to reset device: %d\n", ret
);
421 ret
= arizona_wait_for_boot(arizona
);
423 dev_err(arizona
->dev
, "Device failed initial boot: %d\n", ret
);
427 for (i
= 0; i
< ARRAY_SIZE(arizona
->pdata
.gpio_defaults
); i
++) {
428 if (!arizona
->pdata
.gpio_defaults
[i
])
431 regmap_write(arizona
->regmap
, ARIZONA_GPIO1_CTRL
+ i
,
432 arizona
->pdata
.gpio_defaults
[i
]);
435 pm_runtime_set_autosuspend_delay(arizona
->dev
, 100);
436 pm_runtime_use_autosuspend(arizona
->dev
);
437 pm_runtime_enable(arizona
->dev
);
440 if (!arizona
->pdata
.clk32k_src
)
441 arizona
->pdata
.clk32k_src
= ARIZONA_32KZ_MCLK2
;
443 switch (arizona
->pdata
.clk32k_src
) {
444 case ARIZONA_32KZ_MCLK1
:
445 case ARIZONA_32KZ_MCLK2
:
446 regmap_update_bits(arizona
->regmap
, ARIZONA_CLOCK_32K_1
,
447 ARIZONA_CLK_32K_SRC_MASK
,
448 arizona
->pdata
.clk32k_src
- 1);
450 case ARIZONA_32KZ_NONE
:
451 regmap_update_bits(arizona
->regmap
, ARIZONA_CLOCK_32K_1
,
452 ARIZONA_CLK_32K_SRC_MASK
, 2);
455 dev_err(arizona
->dev
, "Invalid 32kHz clock source: %d\n",
456 arizona
->pdata
.clk32k_src
);
461 for (i
= 0; i
< ARIZONA_MAX_INPUT
; i
++) {
462 /* Default for both is 0 so noop with defaults */
463 val
= arizona
->pdata
.dmic_ref
[i
]
464 << ARIZONA_IN1_DMIC_SUP_SHIFT
;
465 val
|= arizona
->pdata
.inmode
[i
] << ARIZONA_IN1_MODE_SHIFT
;
467 regmap_update_bits(arizona
->regmap
,
468 ARIZONA_IN1L_CONTROL
+ (i
* 8),
469 ARIZONA_IN1_DMIC_SUP_MASK
|
470 ARIZONA_IN1_MODE_MASK
, val
);
473 for (i
= 0; i
< ARIZONA_MAX_OUTPUT
; i
++) {
474 /* Default is 0 so noop with defaults */
475 if (arizona
->pdata
.out_mono
[i
])
476 val
= ARIZONA_OUT1_MONO
;
480 regmap_update_bits(arizona
->regmap
,
481 ARIZONA_OUTPUT_PATH_CONFIG_1L
+ (i
* 8),
482 ARIZONA_OUT1_MONO
, val
);
485 for (i
= 0; i
< ARIZONA_MAX_PDM_SPK
; i
++) {
486 if (arizona
->pdata
.spk_mute
[i
])
487 regmap_update_bits(arizona
->regmap
,
488 ARIZONA_PDM_SPK1_CTRL_1
+ (i
* 2),
489 ARIZONA_SPK1_MUTE_ENDIAN_MASK
|
490 ARIZONA_SPK1_MUTE_SEQ1_MASK
,
491 arizona
->pdata
.spk_mute
[i
]);
493 if (arizona
->pdata
.spk_fmt
[i
])
494 regmap_update_bits(arizona
->regmap
,
495 ARIZONA_PDM_SPK1_CTRL_2
+ (i
* 2),
496 ARIZONA_SPK1_FMT_MASK
,
497 arizona
->pdata
.spk_fmt
[i
]);
500 /* Set up for interrupts */
501 ret
= arizona_irq_init(arizona
);
505 arizona_request_irq(arizona
, ARIZONA_IRQ_CLKGEN_ERR
, "CLKGEN error",
506 arizona_clkgen_err
, arizona
);
507 arizona_request_irq(arizona
, ARIZONA_IRQ_OVERCLOCKED
, "Overclocked",
508 arizona_overclocked
, arizona
);
509 arizona_request_irq(arizona
, ARIZONA_IRQ_UNDERCLOCKED
, "Underclocked",
510 arizona_underclocked
, arizona
);
512 switch (arizona
->type
) {
514 ret
= mfd_add_devices(arizona
->dev
, -1, wm5102_devs
,
515 ARRAY_SIZE(wm5102_devs
), NULL
, 0);
518 ret
= mfd_add_devices(arizona
->dev
, -1, wm5110_devs
,
519 ARRAY_SIZE(wm5102_devs
), NULL
, 0);
524 dev_err(arizona
->dev
, "Failed to add subdevices: %d\n", ret
);
528 #ifdef CONFIG_PM_RUNTIME
529 regulator_disable(arizona
->dcvdd
);
535 arizona_irq_exit(arizona
);
537 if (arizona
->pdata
.reset
) {
538 gpio_set_value_cansleep(arizona
->pdata
.reset
, 1);
539 gpio_free(arizona
->pdata
.reset
);
542 regulator_disable(arizona
->dcvdd
);
544 regulator_bulk_disable(arizona
->num_core_supplies
,
545 arizona
->core_supplies
);
547 mfd_remove_devices(dev
);
550 EXPORT_SYMBOL_GPL(arizona_dev_init
);
552 int __devexit
arizona_dev_exit(struct arizona
*arizona
)
554 mfd_remove_devices(arizona
->dev
);
555 arizona_free_irq(arizona
, ARIZONA_IRQ_UNDERCLOCKED
, arizona
);
556 arizona_free_irq(arizona
, ARIZONA_IRQ_OVERCLOCKED
, arizona
);
557 arizona_free_irq(arizona
, ARIZONA_IRQ_CLKGEN_ERR
, arizona
);
558 pm_runtime_disable(arizona
->dev
);
559 arizona_irq_exit(arizona
);
562 EXPORT_SYMBOL_GPL(arizona_dev_exit
);