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_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");
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 dev_dbg(arizona
->dev
, "Leaving AoD mode\n");
228 ret
= regulator_enable(arizona
->dcvdd
);
230 dev_err(arizona
->dev
, "Failed to enable DCVDD: %d\n", ret
);
234 regcache_cache_only(arizona
->regmap
, false);
236 ret
= arizona_wait_for_boot(arizona
);
238 regulator_disable(arizona
->dcvdd
);
242 ret
= regcache_sync(arizona
->regmap
);
244 dev_err(arizona
->dev
, "Failed to restore register cache\n");
245 regulator_disable(arizona
->dcvdd
);
252 static int arizona_runtime_suspend(struct device
*dev
)
254 struct arizona
*arizona
= dev_get_drvdata(dev
);
256 dev_dbg(arizona
->dev
, "Entering AoD mode\n");
258 regulator_disable(arizona
->dcvdd
);
259 regcache_cache_only(arizona
->regmap
, true);
260 regcache_mark_dirty(arizona
->regmap
);
266 const struct dev_pm_ops arizona_pm_ops
= {
267 SET_RUNTIME_PM_OPS(arizona_runtime_suspend
,
268 arizona_runtime_resume
,
271 EXPORT_SYMBOL_GPL(arizona_pm_ops
);
273 static struct mfd_cell early_devs
[] = {
274 { .name
= "arizona-ldo1" },
277 static struct mfd_cell wm5102_devs
[] = {
278 { .name
= "arizona-extcon" },
279 { .name
= "arizona-gpio" },
280 { .name
= "arizona-haptics" },
281 { .name
= "arizona-micsupp" },
282 { .name
= "arizona-pwm" },
283 { .name
= "wm5102-codec" },
286 static struct mfd_cell wm5110_devs
[] = {
287 { .name
= "arizona-extcon" },
288 { .name
= "arizona-gpio" },
289 { .name
= "arizona-haptics" },
290 { .name
= "arizona-micsupp" },
291 { .name
= "arizona-pwm" },
292 { .name
= "wm5110-codec" },
295 int arizona_dev_init(struct arizona
*arizona
)
297 struct device
*dev
= arizona
->dev
;
298 const char *type_name
;
299 unsigned int reg
, val
;
300 int (*apply_patch
)(struct arizona
*) = NULL
;
303 dev_set_drvdata(arizona
->dev
, arizona
);
304 mutex_init(&arizona
->clk_lock
);
306 if (dev_get_platdata(arizona
->dev
))
307 memcpy(&arizona
->pdata
, dev_get_platdata(arizona
->dev
),
308 sizeof(arizona
->pdata
));
310 regcache_cache_only(arizona
->regmap
, true);
312 switch (arizona
->type
) {
315 for (i
= 0; i
< ARRAY_SIZE(wm5102_core_supplies
); i
++)
316 arizona
->core_supplies
[i
].supply
317 = wm5102_core_supplies
[i
];
318 arizona
->num_core_supplies
= ARRAY_SIZE(wm5102_core_supplies
);
321 dev_err(arizona
->dev
, "Unknown device type %d\n",
326 ret
= mfd_add_devices(arizona
->dev
, -1, early_devs
,
327 ARRAY_SIZE(early_devs
), NULL
, 0, NULL
);
329 dev_err(dev
, "Failed to add early children: %d\n", ret
);
333 ret
= devm_regulator_bulk_get(dev
, arizona
->num_core_supplies
,
334 arizona
->core_supplies
);
336 dev_err(dev
, "Failed to request core supplies: %d\n",
341 arizona
->dcvdd
= devm_regulator_get(arizona
->dev
, "DCVDD");
342 if (IS_ERR(arizona
->dcvdd
)) {
343 ret
= PTR_ERR(arizona
->dcvdd
);
344 dev_err(dev
, "Failed to request DCVDD: %d\n", ret
);
348 ret
= regulator_bulk_enable(arizona
->num_core_supplies
,
349 arizona
->core_supplies
);
351 dev_err(dev
, "Failed to enable core supplies: %d\n",
356 ret
= regulator_enable(arizona
->dcvdd
);
358 dev_err(dev
, "Failed to enable DCVDD: %d\n", ret
);
362 if (arizona
->pdata
.reset
) {
363 /* Start out with /RESET low to put the chip into reset */
364 ret
= gpio_request_one(arizona
->pdata
.reset
,
365 GPIOF_DIR_OUT
| GPIOF_INIT_LOW
,
368 dev_err(dev
, "Failed to request /RESET: %d\n", ret
);
372 gpio_set_value_cansleep(arizona
->pdata
.reset
, 1);
375 regcache_cache_only(arizona
->regmap
, false);
377 ret
= regmap_read(arizona
->regmap
, ARIZONA_SOFTWARE_RESET
, ®
);
379 dev_err(dev
, "Failed to read ID register: %d\n", ret
);
383 ret
= regmap_read(arizona
->regmap
, ARIZONA_DEVICE_REVISION
,
386 dev_err(dev
, "Failed to read revision register: %d\n", ret
);
389 arizona
->rev
&= ARIZONA_DEVICE_REVISION_MASK
;
392 #ifdef CONFIG_MFD_WM5102
394 type_name
= "WM5102";
395 if (arizona
->type
!= WM5102
) {
396 dev_err(arizona
->dev
, "WM5102 registered as %d\n",
398 arizona
->type
= WM5102
;
400 apply_patch
= wm5102_patch
;
403 #ifdef CONFIG_MFD_WM5110
405 type_name
= "WM5110";
406 if (arizona
->type
!= WM5110
) {
407 dev_err(arizona
->dev
, "WM5110 registered as %d\n",
409 arizona
->type
= WM5110
;
411 apply_patch
= wm5110_patch
;
415 dev_err(arizona
->dev
, "Unknown device ID %x\n", reg
);
419 dev_info(dev
, "%s revision %c\n", type_name
, arizona
->rev
+ 'A');
421 /* If we have a /RESET GPIO we'll already be reset */
422 if (!arizona
->pdata
.reset
) {
423 regcache_mark_dirty(arizona
->regmap
);
425 ret
= regmap_write(arizona
->regmap
, ARIZONA_SOFTWARE_RESET
, 0);
427 dev_err(dev
, "Failed to reset device: %d\n", ret
);
431 ret
= regcache_sync(arizona
->regmap
);
433 dev_err(dev
, "Failed to sync device: %d\n", ret
);
438 ret
= arizona_wait_for_boot(arizona
);
440 dev_err(arizona
->dev
, "Device failed initial boot: %d\n", ret
);
445 ret
= apply_patch(arizona
);
447 dev_err(arizona
->dev
, "Failed to apply patch: %d\n",
453 for (i
= 0; i
< ARRAY_SIZE(arizona
->pdata
.gpio_defaults
); i
++) {
454 if (!arizona
->pdata
.gpio_defaults
[i
])
457 regmap_write(arizona
->regmap
, ARIZONA_GPIO1_CTRL
+ i
,
458 arizona
->pdata
.gpio_defaults
[i
]);
461 pm_runtime_set_autosuspend_delay(arizona
->dev
, 100);
462 pm_runtime_use_autosuspend(arizona
->dev
);
463 pm_runtime_enable(arizona
->dev
);
466 if (!arizona
->pdata
.clk32k_src
)
467 arizona
->pdata
.clk32k_src
= ARIZONA_32KZ_MCLK2
;
469 switch (arizona
->pdata
.clk32k_src
) {
470 case ARIZONA_32KZ_MCLK1
:
471 case ARIZONA_32KZ_MCLK2
:
472 regmap_update_bits(arizona
->regmap
, ARIZONA_CLOCK_32K_1
,
473 ARIZONA_CLK_32K_SRC_MASK
,
474 arizona
->pdata
.clk32k_src
- 1);
476 case ARIZONA_32KZ_NONE
:
477 regmap_update_bits(arizona
->regmap
, ARIZONA_CLOCK_32K_1
,
478 ARIZONA_CLK_32K_SRC_MASK
, 2);
481 dev_err(arizona
->dev
, "Invalid 32kHz clock source: %d\n",
482 arizona
->pdata
.clk32k_src
);
487 for (i
= 0; i
< ARIZONA_MAX_INPUT
; i
++) {
488 /* Default for both is 0 so noop with defaults */
489 val
= arizona
->pdata
.dmic_ref
[i
]
490 << ARIZONA_IN1_DMIC_SUP_SHIFT
;
491 val
|= arizona
->pdata
.inmode
[i
] << ARIZONA_IN1_MODE_SHIFT
;
493 regmap_update_bits(arizona
->regmap
,
494 ARIZONA_IN1L_CONTROL
+ (i
* 8),
495 ARIZONA_IN1_DMIC_SUP_MASK
|
496 ARIZONA_IN1_MODE_MASK
, val
);
499 for (i
= 0; i
< ARIZONA_MAX_OUTPUT
; i
++) {
500 /* Default is 0 so noop with defaults */
501 if (arizona
->pdata
.out_mono
[i
])
502 val
= ARIZONA_OUT1_MONO
;
506 regmap_update_bits(arizona
->regmap
,
507 ARIZONA_OUTPUT_PATH_CONFIG_1L
+ (i
* 8),
508 ARIZONA_OUT1_MONO
, val
);
511 for (i
= 0; i
< ARIZONA_MAX_PDM_SPK
; i
++) {
512 if (arizona
->pdata
.spk_mute
[i
])
513 regmap_update_bits(arizona
->regmap
,
514 ARIZONA_PDM_SPK1_CTRL_1
+ (i
* 2),
515 ARIZONA_SPK1_MUTE_ENDIAN_MASK
|
516 ARIZONA_SPK1_MUTE_SEQ1_MASK
,
517 arizona
->pdata
.spk_mute
[i
]);
519 if (arizona
->pdata
.spk_fmt
[i
])
520 regmap_update_bits(arizona
->regmap
,
521 ARIZONA_PDM_SPK1_CTRL_2
+ (i
* 2),
522 ARIZONA_SPK1_FMT_MASK
,
523 arizona
->pdata
.spk_fmt
[i
]);
526 /* Set up for interrupts */
527 ret
= arizona_irq_init(arizona
);
531 arizona_request_irq(arizona
, ARIZONA_IRQ_CLKGEN_ERR
, "CLKGEN error",
532 arizona_clkgen_err
, arizona
);
533 arizona_request_irq(arizona
, ARIZONA_IRQ_OVERCLOCKED
, "Overclocked",
534 arizona_overclocked
, arizona
);
535 arizona_request_irq(arizona
, ARIZONA_IRQ_UNDERCLOCKED
, "Underclocked",
536 arizona_underclocked
, arizona
);
538 switch (arizona
->type
) {
540 ret
= mfd_add_devices(arizona
->dev
, -1, wm5102_devs
,
541 ARRAY_SIZE(wm5102_devs
), NULL
, 0, NULL
);
544 ret
= mfd_add_devices(arizona
->dev
, -1, wm5110_devs
,
545 ARRAY_SIZE(wm5110_devs
), NULL
, 0, NULL
);
550 dev_err(arizona
->dev
, "Failed to add subdevices: %d\n", ret
);
554 #ifdef CONFIG_PM_RUNTIME
555 regulator_disable(arizona
->dcvdd
);
561 arizona_irq_exit(arizona
);
563 if (arizona
->pdata
.reset
) {
564 gpio_set_value_cansleep(arizona
->pdata
.reset
, 1);
565 gpio_free(arizona
->pdata
.reset
);
568 regulator_disable(arizona
->dcvdd
);
570 regulator_bulk_disable(arizona
->num_core_supplies
,
571 arizona
->core_supplies
);
573 mfd_remove_devices(dev
);
576 EXPORT_SYMBOL_GPL(arizona_dev_init
);
578 int arizona_dev_exit(struct arizona
*arizona
)
580 mfd_remove_devices(arizona
->dev
);
581 arizona_free_irq(arizona
, ARIZONA_IRQ_UNDERCLOCKED
, arizona
);
582 arizona_free_irq(arizona
, ARIZONA_IRQ_OVERCLOCKED
, arizona
);
583 arizona_free_irq(arizona
, ARIZONA_IRQ_CLKGEN_ERR
, arizona
);
584 pm_runtime_disable(arizona
->dev
);
585 arizona_irq_exit(arizona
);
588 EXPORT_SYMBOL_GPL(arizona_dev_exit
);