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 int __devinit arizona_dev_init(struct arizona *arizona)
278 struct device *dev = arizona->dev;
279 const char *type_name;
280 unsigned int reg, val;
283 dev_set_drvdata(arizona->dev, arizona);
284 mutex_init(&arizona->clk_lock);
286 if (dev_get_platdata(arizona->dev))
287 memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
288 sizeof(arizona->pdata));
290 regcache_cache_only(arizona->regmap, true);
292 switch (arizona->type) {
294 for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
295 arizona->core_supplies[i].supply
296 = wm5102_core_supplies[i];
297 arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
300 dev_err(arizona->dev, "Unknown device type %d\n",
305 ret = mfd_add_devices(arizona->dev, -1, early_devs,
306 ARRAY_SIZE(early_devs), NULL, 0);
308 dev_err(dev, "Failed to add early children: %d\n", ret);
312 ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
313 arizona->core_supplies);
315 dev_err(dev, "Failed to request core supplies: %d\n",
320 arizona->dcvdd = devm_regulator_get(arizona->dev, "DCVDD");
321 if (IS_ERR(arizona->dcvdd)) {
322 ret = PTR_ERR(arizona->dcvdd);
323 dev_err(dev, "Failed to request DCVDD: %d\n", ret);
327 ret = regulator_bulk_enable(arizona->num_core_supplies,
328 arizona->core_supplies);
330 dev_err(dev, "Failed to enable core supplies: %d\n",
335 ret = regulator_enable(arizona->dcvdd);
337 dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
341 if (arizona->pdata.reset) {
342 /* Start out with /RESET low to put the chip into reset */
343 ret = gpio_request_one(arizona->pdata.reset,
344 GPIOF_DIR_OUT | GPIOF_INIT_LOW,
347 dev_err(dev, "Failed to request /RESET: %d\n", ret);
351 gpio_set_value_cansleep(arizona->pdata.reset, 1);
354 regcache_cache_only(arizona->regmap, false);
356 ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, ®);
358 dev_err(dev, "Failed to read ID register: %d\n", ret);
362 ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
365 dev_err(dev, "Failed to read revision register: %d\n", ret);
368 arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
371 #ifdef CONFIG_MFD_WM5102
373 type_name = "WM5102";
374 if (arizona->type != WM5102) {
375 dev_err(arizona->dev, "WM5102 registered as %d\n",
377 arizona->type = WM5102;
379 ret = wm5102_patch(arizona);
383 dev_err(arizona->dev, "Unknown device ID %x\n", reg);
387 dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
390 dev_err(arizona->dev, "Failed to apply patch: %d\n", ret);
392 /* If we have a /RESET GPIO we'll already be reset */
393 if (!arizona->pdata.reset) {
394 ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
396 dev_err(dev, "Failed to reset device: %d\n", ret);
401 arizona_wait_for_boot(arizona);
403 for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
404 if (!arizona->pdata.gpio_defaults[i])
407 regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
408 arizona->pdata.gpio_defaults[i]);
411 pm_runtime_set_autosuspend_delay(arizona->dev, 100);
412 pm_runtime_use_autosuspend(arizona->dev);
413 pm_runtime_enable(arizona->dev);
416 if (!arizona->pdata.clk32k_src)
417 arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
419 switch (arizona->pdata.clk32k_src) {
420 case ARIZONA_32KZ_MCLK1:
421 case ARIZONA_32KZ_MCLK2:
422 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
423 ARIZONA_CLK_32K_SRC_MASK,
424 arizona->pdata.clk32k_src - 1);
426 case ARIZONA_32KZ_NONE:
427 regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
428 ARIZONA_CLK_32K_SRC_MASK, 2);
431 dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
432 arizona->pdata.clk32k_src);
437 for (i = 0; i < ARIZONA_MAX_INPUT; i++) {
438 /* Default for both is 0 so noop with defaults */
439 val = arizona->pdata.dmic_ref[i]
440 << ARIZONA_IN1_DMIC_SUP_SHIFT;
441 val |= arizona->pdata.inmode[i] << ARIZONA_IN1_MODE_SHIFT;
443 regmap_update_bits(arizona->regmap,
444 ARIZONA_IN1L_CONTROL + (i * 8),
445 ARIZONA_IN1_DMIC_SUP_MASK |
446 ARIZONA_IN1_MODE_MASK, val);
449 for (i = 0; i < ARIZONA_MAX_OUTPUT; i++) {
450 /* Default is 0 so noop with defaults */
451 if (arizona->pdata.out_mono[i])
452 val = ARIZONA_OUT1_MONO;
456 regmap_update_bits(arizona->regmap,
457 ARIZONA_OUTPUT_PATH_CONFIG_1L + (i * 8),
458 ARIZONA_OUT1_MONO, val);
461 BUILD_BUG_ON(ARIZONA_MAX_PDM_SPK > 1);
462 for (i = 0; i < ARIZONA_MAX_PDM_SPK; i++) {
463 if (arizona->pdata.spk_mute[i])
464 regmap_update_bits(arizona->regmap,
465 ARIZONA_PDM_SPK1_CTRL_1,
466 ARIZONA_SPK1_MUTE_ENDIAN_MASK |
467 ARIZONA_SPK1_MUTE_SEQ1_MASK,
468 arizona->pdata.spk_mute[i]);
470 if (arizona->pdata.spk_fmt[i])
471 regmap_update_bits(arizona->regmap,
472 ARIZONA_PDM_SPK1_CTRL_2,
473 ARIZONA_SPK1_FMT_MASK,
474 arizona->pdata.spk_fmt[i]);
477 /* Set up for interrupts */
478 ret = arizona_irq_init(arizona);
482 arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
483 arizona_clkgen_err, arizona);
484 arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
485 arizona_overclocked, arizona);
486 arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
487 arizona_underclocked, arizona);
489 switch (arizona->type) {
491 ret = mfd_add_devices(arizona->dev, -1, wm5102_devs,
492 ARRAY_SIZE(wm5102_devs), NULL, 0);
497 dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
501 #ifdef CONFIG_PM_RUNTIME
502 regulator_disable(arizona->dcvdd);
508 arizona_irq_exit(arizona);
510 if (arizona->pdata.reset) {
511 gpio_set_value_cansleep(arizona->pdata.reset, 1);
512 gpio_free(arizona->pdata.reset);
515 regulator_disable(arizona->dcvdd);
517 regulator_bulk_disable(arizona->num_core_supplies,
518 arizona->core_supplies);
520 mfd_remove_devices(dev);
523 EXPORT_SYMBOL_GPL(arizona_dev_init);
525 int __devexit arizona_dev_exit(struct arizona *arizona)
527 mfd_remove_devices(arizona->dev);
528 arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona);
529 arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona);
530 arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona);
531 pm_runtime_disable(arizona->dev);
532 arizona_irq_exit(arizona);
535 EXPORT_SYMBOL_GPL(arizona_dev_exit);