in arizona-core.c [940:1405]
int arizona_dev_init(struct arizona *arizona)
{
static const char * const mclk_name[] = { "mclk1", "mclk2" };
struct device *dev = arizona->dev;
const char *type_name = NULL;
unsigned int reg, val;
int (*apply_patch)(struct arizona *) = NULL;
const struct mfd_cell *subdevs = NULL;
int n_subdevs = 0, ret, i;
dev_set_drvdata(arizona->dev, arizona);
mutex_init(&arizona->clk_lock);
if (dev_get_platdata(arizona->dev)) {
memcpy(&arizona->pdata, dev_get_platdata(arizona->dev),
sizeof(arizona->pdata));
} else {
ret = arizona_of_get_core_pdata(arizona);
if (ret < 0)
return ret;
}
BUILD_BUG_ON(ARRAY_SIZE(arizona->mclk) != ARRAY_SIZE(mclk_name));
for (i = 0; i < ARRAY_SIZE(arizona->mclk); i++) {
arizona->mclk[i] = devm_clk_get(arizona->dev, mclk_name[i]);
if (IS_ERR(arizona->mclk[i])) {
dev_info(arizona->dev, "Failed to get %s: %ld\n",
mclk_name[i], PTR_ERR(arizona->mclk[i]));
arizona->mclk[i] = NULL;
}
}
regcache_cache_only(arizona->regmap, true);
switch (arizona->type) {
case WM5102:
case WM5110:
case WM8280:
case WM8997:
case WM8998:
case WM1814:
case WM1831:
case CS47L24:
for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++)
arizona->core_supplies[i].supply
= wm5102_core_supplies[i];
arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies);
break;
default:
dev_err(arizona->dev, "Unknown device type %d\n",
arizona->type);
return -ENODEV;
}
/* Mark DCVDD as external, LDO1 driver will clear if internal */
arizona->external_dcvdd = true;
switch (arizona->type) {
case WM1831:
case CS47L24:
break; /* No LDO1 regulator */
default:
ret = mfd_add_devices(arizona->dev, -1, early_devs,
ARRAY_SIZE(early_devs), NULL, 0, NULL);
if (ret != 0) {
dev_err(dev, "Failed to add early children: %d\n", ret);
return ret;
}
break;
}
ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies,
arizona->core_supplies);
if (ret != 0) {
dev_err(dev, "Failed to request core supplies: %d\n",
ret);
goto err_early;
}
/**
* Don't use devres here because the only device we have to get
* against is the MFD device and DCVDD will likely be supplied by
* one of its children. Meaning that the regulator will be
* destroyed by the time devres calls regulator put.
*/
arizona->dcvdd = regulator_get(arizona->dev, "DCVDD");
if (IS_ERR(arizona->dcvdd)) {
ret = PTR_ERR(arizona->dcvdd);
dev_err(dev, "Failed to request DCVDD: %d\n", ret);
goto err_early;
}
if (!arizona->pdata.reset) {
/* Start out with /RESET low to put the chip into reset */
arizona->pdata.reset = devm_gpiod_get(arizona->dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(arizona->pdata.reset)) {
ret = PTR_ERR(arizona->pdata.reset);
if (ret == -EPROBE_DEFER)
goto err_dcvdd;
dev_err(arizona->dev,
"Reset GPIO missing/malformed: %d\n", ret);
arizona->pdata.reset = NULL;
}
}
ret = regulator_bulk_enable(arizona->num_core_supplies,
arizona->core_supplies);
if (ret != 0) {
dev_err(dev, "Failed to enable core supplies: %d\n",
ret);
goto err_dcvdd;
}
ret = regulator_enable(arizona->dcvdd);
if (ret != 0) {
dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
goto err_enable;
}
arizona_disable_reset(arizona);
regcache_cache_only(arizona->regmap, false);
/* Verify that this is a chip we know about */
ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, ®);
if (ret != 0) {
dev_err(dev, "Failed to read ID register: %d\n", ret);
goto err_reset;
}
switch (reg) {
case 0x5102:
case 0x5110:
case 0x6349:
case 0x6363:
case 0x8997:
break;
default:
dev_err(arizona->dev, "Unknown device ID: %x\n", reg);
ret = -ENODEV;
goto err_reset;
}
/* If we have a /RESET GPIO we'll already be reset */
if (!arizona->pdata.reset) {
ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0);
if (ret != 0) {
dev_err(dev, "Failed to reset device: %d\n", ret);
goto err_reset;
}
usleep_range(1000, 5000);
}
/* Ensure device startup is complete */
switch (arizona->type) {
case WM5102:
ret = regmap_read(arizona->regmap,
ARIZONA_WRITE_SEQUENCER_CTRL_3, &val);
if (ret) {
dev_err(dev,
"Failed to check write sequencer state: %d\n",
ret);
} else if (val & 0x01) {
ret = wm5102_clear_write_sequencer(arizona);
if (ret)
return ret;
}
break;
default:
break;
}
ret = arizona_wait_for_boot(arizona);
if (ret) {
dev_err(arizona->dev, "Device failed initial boot: %d\n", ret);
goto err_reset;
}
/* Read the device ID information & do device specific stuff */
ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, ®);
if (ret != 0) {
dev_err(dev, "Failed to read ID register: %d\n", ret);
goto err_reset;
}
ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION,
&arizona->rev);
if (ret != 0) {
dev_err(dev, "Failed to read revision register: %d\n", ret);
goto err_reset;
}
arizona->rev &= ARIZONA_DEVICE_REVISION_MASK;
switch (reg) {
case 0x5102:
if (IS_ENABLED(CONFIG_MFD_WM5102)) {
type_name = "WM5102";
if (arizona->type != WM5102) {
dev_warn(arizona->dev,
"WM5102 registered as %d\n",
arizona->type);
arizona->type = WM5102;
}
apply_patch = wm5102_patch;
arizona->rev &= 0x7;
subdevs = wm5102_devs;
n_subdevs = ARRAY_SIZE(wm5102_devs);
}
break;
case 0x5110:
if (IS_ENABLED(CONFIG_MFD_WM5110)) {
switch (arizona->type) {
case WM5110:
type_name = "WM5110";
break;
case WM8280:
type_name = "WM8280";
break;
default:
type_name = "WM5110";
dev_warn(arizona->dev,
"WM5110 registered as %d\n",
arizona->type);
arizona->type = WM5110;
break;
}
apply_patch = wm5110_patch;
subdevs = wm5110_devs;
n_subdevs = ARRAY_SIZE(wm5110_devs);
}
break;
case 0x6363:
if (IS_ENABLED(CONFIG_MFD_CS47L24)) {
switch (arizona->type) {
case CS47L24:
type_name = "CS47L24";
break;
case WM1831:
type_name = "WM1831";
break;
default:
dev_warn(arizona->dev,
"CS47L24 registered as %d\n",
arizona->type);
arizona->type = CS47L24;
break;
}
apply_patch = cs47l24_patch;
subdevs = cs47l24_devs;
n_subdevs = ARRAY_SIZE(cs47l24_devs);
}
break;
case 0x8997:
if (IS_ENABLED(CONFIG_MFD_WM8997)) {
type_name = "WM8997";
if (arizona->type != WM8997) {
dev_warn(arizona->dev,
"WM8997 registered as %d\n",
arizona->type);
arizona->type = WM8997;
}
apply_patch = wm8997_patch;
subdevs = wm8997_devs;
n_subdevs = ARRAY_SIZE(wm8997_devs);
}
break;
case 0x6349:
if (IS_ENABLED(CONFIG_MFD_WM8998)) {
switch (arizona->type) {
case WM8998:
type_name = "WM8998";
break;
case WM1814:
type_name = "WM1814";
break;
default:
type_name = "WM8998";
dev_warn(arizona->dev,
"WM8998 registered as %d\n",
arizona->type);
arizona->type = WM8998;
}
apply_patch = wm8998_patch;
subdevs = wm8998_devs;
n_subdevs = ARRAY_SIZE(wm8998_devs);
}
break;
default:
dev_err(arizona->dev, "Unknown device ID %x\n", reg);
ret = -ENODEV;
goto err_reset;
}
if (!subdevs) {
dev_err(arizona->dev,
"No kernel support for device ID %x\n", reg);
ret = -ENODEV;
goto err_reset;
}
dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A');
if (apply_patch) {
ret = apply_patch(arizona);
if (ret != 0) {
dev_err(arizona->dev, "Failed to apply patch: %d\n",
ret);
goto err_reset;
}
switch (arizona->type) {
case WM5102:
ret = wm5102_apply_hardware_patch(arizona);
if (ret) {
dev_err(arizona->dev,
"Failed to apply hardware patch: %d\n",
ret);
goto err_reset;
}
break;
case WM5110:
case WM8280:
ret = wm5110_apply_sleep_patch(arizona);
if (ret) {
dev_err(arizona->dev,
"Failed to apply sleep patch: %d\n",
ret);
goto err_reset;
}
break;
default:
break;
}
}
for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) {
if (!arizona->pdata.gpio_defaults[i])
continue;
regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i,
arizona->pdata.gpio_defaults[i]);
}
/* Chip default */
if (!arizona->pdata.clk32k_src)
arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2;
switch (arizona->pdata.clk32k_src) {
case ARIZONA_32KZ_MCLK1:
case ARIZONA_32KZ_MCLK2:
regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
ARIZONA_CLK_32K_SRC_MASK,
arizona->pdata.clk32k_src - 1);
arizona_clk32k_enable(arizona);
break;
case ARIZONA_32KZ_NONE:
regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1,
ARIZONA_CLK_32K_SRC_MASK, 2);
break;
default:
dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n",
arizona->pdata.clk32k_src);
ret = -EINVAL;
goto err_reset;
}
for (i = 0; i < ARIZONA_MAX_MICBIAS; i++) {
if (!arizona->pdata.micbias[i].mV &&
!arizona->pdata.micbias[i].bypass)
continue;
/* Apply default for bypass mode */
if (!arizona->pdata.micbias[i].mV)
arizona->pdata.micbias[i].mV = 2800;
val = (arizona->pdata.micbias[i].mV - 1500) / 100;
val <<= ARIZONA_MICB1_LVL_SHIFT;
if (arizona->pdata.micbias[i].ext_cap)
val |= ARIZONA_MICB1_EXT_CAP;
if (arizona->pdata.micbias[i].discharge)
val |= ARIZONA_MICB1_DISCH;
if (arizona->pdata.micbias[i].soft_start)
val |= ARIZONA_MICB1_RATE;
if (arizona->pdata.micbias[i].bypass)
val |= ARIZONA_MICB1_BYPASS;
regmap_update_bits(arizona->regmap,
ARIZONA_MIC_BIAS_CTRL_1 + i,
ARIZONA_MICB1_LVL_MASK |
ARIZONA_MICB1_EXT_CAP |
ARIZONA_MICB1_DISCH |
ARIZONA_MICB1_BYPASS |
ARIZONA_MICB1_RATE, val);
}
pm_runtime_set_active(arizona->dev);
pm_runtime_enable(arizona->dev);
/* Set up for interrupts */
ret = arizona_irq_init(arizona);
if (ret != 0)
goto err_pm;
pm_runtime_set_autosuspend_delay(arizona->dev, 100);
pm_runtime_use_autosuspend(arizona->dev);
arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error",
arizona_clkgen_err, arizona);
arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked",
arizona_overclocked, arizona);
arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
arizona_underclocked, arizona);
ret = mfd_add_devices(arizona->dev, PLATFORM_DEVID_NONE,
subdevs, n_subdevs, NULL, 0, NULL);
if (ret) {
dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
goto err_irq;
}
return 0;
err_irq:
arizona_irq_exit(arizona);
err_pm:
pm_runtime_disable(arizona->dev);
switch (arizona->pdata.clk32k_src) {
case ARIZONA_32KZ_MCLK1:
case ARIZONA_32KZ_MCLK2:
arizona_clk32k_disable(arizona);
break;
default:
break;
}
err_reset:
arizona_enable_reset(arizona);
regulator_disable(arizona->dcvdd);
err_enable:
regulator_bulk_disable(arizona->num_core_supplies,
arizona->core_supplies);
err_dcvdd:
regulator_put(arizona->dcvdd);
err_early:
mfd_remove_devices(dev);
return ret;
}