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lineage_kernel_xcoverpro/drivers/mfd/madera-core.c

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/*
* Core MFD support for Cirrus Logic Madera codecs
*
* Copyright 2015-2017 Cirrus Logic
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/mfd/madera/core.h>
#include <linux/mfd/madera/registers.h>
#include "madera.h"
#define CS47L15_SILICON_ID 0x6370
#define CS47L35_SILICON_ID 0x6360
#define CS47L85_SILICON_ID 0x6338
#define CS47L90_SILICON_ID 0x6364
#define CS47L92_SILICON_ID 0x6371
#define MADERA_32KZ_MCLK2 1
#define ERRATA_DCVDD_MIN_US 10000
#define ERRATA_DCVDD_MAX_US 15000
static const char * const madera_core_supplies[] = {
"AVDD",
"DBVDD1",
};
static const struct mfd_cell madera_ldo1_devs[] = {
{ .name = "madera-ldo1" },
};
static const struct mfd_cell madera_pinctrl_dev[] = {
{
.name = "madera-pinctrl",
.of_compatible = "cirrus,madera-pinctrl",
},
};
static const char * const cs47l15_supplies[] = {
"MICVDD",
"CPVDD1",
"SPKVDD",
};
static const struct mfd_cell cs47l15_devs[] = {
{ .name = "madera-irq" },
{ .name = "madera-gpio" },
{
.name = "madera-extcon",
.parent_supplies = cs47l15_supplies,
.num_parent_supplies = 1, /* We only need MICVDD */
},
{
.name = "cs47l15-codec",
.parent_supplies = cs47l15_supplies,
.num_parent_supplies = ARRAY_SIZE(cs47l15_supplies),
},
};
static const char * const cs47l35_supplies[] = {
"MICVDD",
"DBVDD2",
"CPVDD1",
"CPVDD2",
"SPKVDD",
};
static const struct mfd_cell cs47l35_devs[] = {
{ .name = "madera-irq", },
{ .name = "madera-micsupp" },
{ .name = "madera-gpio", },
{
.name = "madera-extcon",
.parent_supplies = cs47l35_supplies,
.num_parent_supplies = 1, /* We only need MICVDD */
},
{
.name = "cs47l35-codec",
.parent_supplies = cs47l35_supplies,
.num_parent_supplies = ARRAY_SIZE(cs47l35_supplies),
},
};
static const char * const cs47l85_supplies[] = {
"MICVDD",
"DBVDD2",
"DBVDD3",
"DBVDD4",
"CPVDD1",
"CPVDD2",
"SPKVDDL",
"SPKVDDR",
};
static const struct mfd_cell cs47l85_devs[] = {
{ .name = "madera-irq", },
{ .name = "madera-micsupp", },
{ .name = "madera-gpio", },
{
.name = "madera-extcon",
.parent_supplies = cs47l85_supplies,
.num_parent_supplies = 1, /* We only need MICVDD */
},
{
.name = "cs47l85-codec",
.parent_supplies = cs47l85_supplies,
.num_parent_supplies = ARRAY_SIZE(cs47l85_supplies),
},
};
static const char * const cs47l90_supplies[] = {
"MICVDD",
"DBVDD2",
"DBVDD3",
"DBVDD4",
"CPVDD1",
"CPVDD2",
};
static const struct mfd_cell cs47l90_devs[] = {
{ .name = "madera-irq", },
{ .name = "madera-micsupp", },
{ .name = "madera-gpio", },
{
.name = "madera-extcon",
.parent_supplies = cs47l90_supplies,
.num_parent_supplies = 1, /* We only need MICVDD */
},
{
.name = "cs47l90-codec",
.parent_supplies = cs47l90_supplies,
.num_parent_supplies = ARRAY_SIZE(cs47l90_supplies),
},
};
static const char * const cs47l92_supplies[] = {
"MICVDD",
"CPVDD1",
"CPVDD2",
};
static const struct mfd_cell cs47l92_devs[] = {
{ .name = "madera-irq", },
{ .name = "madera-micsupp", },
{ .name = "madera-gpio" },
{
.name = "madera-extcon",
.parent_supplies = cs47l92_supplies,
.num_parent_supplies = 1, /* We only need MICVDD */
},
{
.name = "cs47l92-codec",
.parent_supplies = cs47l92_supplies,
.num_parent_supplies = ARRAY_SIZE(cs47l92_supplies),
},
};
const char *madera_name_from_type(enum madera_type type)
{
switch (type) {
case CS47L15:
return "CS47L15";
case CS47L35:
return "CS47L35";
case CS47L85:
return "CS47L85";
case CS47L90:
return "CS47L90";
case CS47L91:
return "CS47L91";
case CS47L92:
return "CS47L92";
case CS47L93:
return "CS47L93";
case WM1840:
return "WM1840";
default:
return "Unknown";
}
}
EXPORT_SYMBOL_GPL(madera_name_from_type);
#define MADERA_BOOT_POLL_MAX_INTERVAL_US 5000
#define MADERA_BOOT_POLL_TIMEOUT_US 25000
static int madera_wait_for_boot(struct madera *madera)
{
unsigned int val;
int ret;
/*
* We can't use an interrupt as we need to runtime resume to do so,
* so we poll the status bit. This won't race with the interrupt
* handler because it will be blocked on runtime resume.
*/
ret = regmap_read_poll_timeout(madera->regmap,
MADERA_IRQ1_RAW_STATUS_1,
val,
(val & MADERA_BOOT_DONE_STS1),
MADERA_BOOT_POLL_MAX_INTERVAL_US,
MADERA_BOOT_POLL_TIMEOUT_US);
if (ret)
dev_err(madera->dev, "Polling BOOT_DONE_STS failed: %d\n", ret);
/*
* BOOT_DONE defaults to unmasked on boot so we must ack it.
* Do this unconditionally to avoid interrupt storms
*/
regmap_write(madera->regmap, MADERA_IRQ1_STATUS_1,
MADERA_BOOT_DONE_EINT1);
pm_runtime_mark_last_busy(madera->dev);
return ret;
}
static int madera_soft_reset(struct madera *madera)
{
int ret;
ret = regmap_write(madera->regmap, MADERA_SOFTWARE_RESET, 0);
if (ret != 0) {
dev_err(madera->dev, "Failed to soft reset device: %d\n", ret);
return ret;
}
/* Allow time for internal clocks to startup after reset */
usleep_range(1000, 2000);
return 0;
}
static void madera_enable_hard_reset(struct madera *madera)
{
if (madera->reset_gpio)
gpiod_set_value_cansleep(madera->reset_gpio, 0);
}
static void madera_disable_hard_reset(struct madera *madera)
{
if (madera->reset_gpio) {
gpiod_set_value_cansleep(madera->reset_gpio, 1);
usleep_range(1000, 2000);
}
}
static int madera_dcvdd_notify(struct notifier_block *nb,
unsigned long action, void *data)
{
struct madera *madera = container_of(nb, struct madera,
dcvdd_notifier);
dev_dbg(madera->dev, "DCVDD notify %lx\n", action);
if (action & REGULATOR_EVENT_DISABLE)
msleep(20);
return NOTIFY_DONE;
}
#ifdef CONFIG_PM
static int madera_runtime_resume(struct device *dev)
{
struct madera *madera = dev_get_drvdata(dev);
int ret;
dev_info(dev, "Leaving sleep mode\n");
ret = regulator_enable(madera->dcvdd);
if (ret) {
dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
return ret;
}
regcache_cache_only(madera->regmap, false);
regcache_cache_only(madera->regmap_32bit, false);
ret = madera_wait_for_boot(madera);
if (ret)
goto err;
ret = regcache_sync(madera->regmap);
if (ret) {
dev_err(dev, "Failed to restore 16-bit register cache\n");
goto err;
}
ret = regcache_sync(madera->regmap_32bit);
if (ret) {
dev_err(dev, "Failed to restore 32-bit register cache\n");
goto err;
}
return 0;
err:
regcache_cache_only(madera->regmap_32bit, true);
regcache_cache_only(madera->regmap, true);
regulator_disable(madera->dcvdd);
return ret;
}
static int madera_runtime_suspend(struct device *dev)
{
struct madera *madera = dev_get_drvdata(dev);
dev_info(madera->dev, "Entering sleep mode\n");
regcache_cache_only(madera->regmap, true);
regcache_mark_dirty(madera->regmap);
regcache_cache_only(madera->regmap_32bit, true);
regcache_mark_dirty(madera->regmap_32bit);
regulator_disable(madera->dcvdd);
return 0;
}
#endif
const struct dev_pm_ops madera_pm_ops = {
SET_RUNTIME_PM_OPS(madera_runtime_suspend,
madera_runtime_resume,
NULL)
};
EXPORT_SYMBOL_GPL(madera_pm_ops);
unsigned int madera_get_num_micbias(struct madera *madera)
{
switch (madera->type) {
case CS47L15:
return 1;
case CS47L35:
return 2;
case CS47L85:
case WM1840:
return 4;
case CS47L90:
case CS47L91:
case CS47L92:
case CS47L93:
return 2;
default:
dev_warn(madera->dev, "No micbias known for codec %s\n",
madera_name_from_type(madera->type));
return 0;
}
}
EXPORT_SYMBOL_GPL(madera_get_num_micbias);
unsigned int madera_get_num_childbias(struct madera *madera,
unsigned int micbias)
{
/*
* micbias argument reserved for future codecs that don't
* have the same number of children on each micbias
*/
switch (madera->type) {
case CS47L15:
return 3;
case CS47L35:
return 2;
case CS47L85:
case WM1840:
return 0;
case CS47L90:
case CS47L91:
return 4;
case CS47L92:
case CS47L93:
switch (micbias) {
case 1:
return 4;
case 2:
return 2;
default:
dev_warn(madera->dev,
"No child micbias for codec %s, micbias %u\n",
madera_name_from_type(madera->type),
micbias);
return 0;
}
default:
dev_warn(madera->dev, "No child micbias known for codec %s\n",
madera_name_from_type(madera->type));
return 0;
}
}
EXPORT_SYMBOL_GPL(madera_get_num_childbias);
#ifdef CONFIG_OF
const struct of_device_id madera_of_match[] = {
{ .compatible = "cirrus,cs47l15", .data = (void *)CS47L15 },
{ .compatible = "cirrus,cs47l35", .data = (void *)CS47L35 },
{ .compatible = "cirrus,cs47l85", .data = (void *)CS47L85 },
{ .compatible = "cirrus,cs47l90", .data = (void *)CS47L90 },
{ .compatible = "cirrus,cs47l91", .data = (void *)CS47L91 },
{ .compatible = "cirrus,cs47l92", .data = (void *)CS47L92 },
{ .compatible = "cirrus,cs47l93", .data = (void *)CS47L93 },
{ .compatible = "cirrus,wm1840", .data = (void *)WM1840 },
{},
};
EXPORT_SYMBOL_GPL(madera_of_match);
unsigned long madera_get_type_from_of(struct device *dev)
{
const struct of_device_id *id = of_match_device(madera_of_match, dev);
if (id)
return (unsigned long)id->data;
else
return 0;
}
EXPORT_SYMBOL_GPL(madera_get_type_from_of);
#endif
static int madera_get_reset_gpio(struct madera *madera)
{
int ret;
/* We use 0 in pdata to indicate a GPIO has not been set */
if (dev_get_platdata(madera->dev) && (madera->pdata.reset > 0)) {
/* Start out with /RESET asserted */
ret = devm_gpio_request_one(madera->dev,
madera->pdata.reset,
GPIOF_DIR_OUT | GPIOF_INIT_LOW,
"madera reset");
if (!ret)
madera->reset_gpio = gpio_to_desc(madera->pdata.reset);
} else {
madera->reset_gpio = devm_gpiod_get_optional(madera->dev,
"reset",
GPIOD_OUT_LOW);
if (IS_ERR(madera->reset_gpio))
ret = PTR_ERR(madera->reset_gpio);
else
ret = 0;
}
if (ret == -EPROBE_DEFER)
return ret;
if (ret) {
dev_err(madera->dev, "Failed to request /RESET: %d\n", ret);
return ret;
}
if (!madera->reset_gpio)
dev_warn(madera->dev,
"Running without reset GPIO is not recommended\n");
return 0;
}
static void madera_prop_get_micbias_child(struct madera *madera,
const char *name,
struct madera_micbias_pin_pdata *pdata)
{
struct device_node *np;
struct regulator_desc desc = { };
np = of_get_child_by_name(madera->dev->of_node, name);
if (!np)
return;
desc.name = name;
pdata->init_data = of_get_regulator_init_data(madera->dev, np, &desc);
of_property_read_u32(np, "regulator-active-discharge",
&pdata->active_discharge);
}
static void madera_prop_get_micbias_gen(struct madera *madera,
const char *name,
struct madera_micbias_pdata *pdata)
{
struct device_node *np;
struct regulator_desc desc = { };
np = of_get_child_by_name(madera->dev->of_node, name);
if (!np)
return;
desc.name = name;
pdata->init_data = of_get_regulator_init_data(madera->dev, np, &desc);
pdata->ext_cap = of_property_read_bool(np, "wlf,ext-cap");
of_property_read_u32(np, "regulator-active-discharge",
&pdata->active_discharge);
}
static void madera_prop_get_micbias(struct madera *madera)
{
struct madera_micbias_pdata *pdata;
char name[10];
int i, child;
for (i = madera_get_num_micbias(madera) - 1; i >= 0; --i) {
pdata = &madera->pdata.micbias[i];
snprintf(name, sizeof(name), "MICBIAS%d", i + 1);
madera_prop_get_micbias_gen(madera, name, pdata);
child = madera_get_num_childbias(madera, i + 1) - 1;
for (; child >= 0; --child) {
snprintf(name, sizeof(name), "MICBIAS%d%c",
i + 1, 'A' + child);
madera_prop_get_micbias_child(madera, name,
&pdata->pin[child]);
}
}
}
static void madera_configure_micbias(struct madera *madera)
{
unsigned int num_micbias = madera_get_num_micbias(madera);
struct madera_micbias_pdata *pdata;
struct regulator_init_data *init_data;
unsigned int num_child_micbias;
unsigned int val, mask, reg;
int i, child, ret;
for (i = 0; i < num_micbias; ++i) {
pdata = &madera->pdata.micbias[i];
/* Configure the child micbias pins */
val = 0;
mask = 0;
num_child_micbias = madera_get_num_childbias(madera, i + 1);
for (child = 0; child < num_child_micbias; ++child) {
if (!pdata->pin[child].init_data)
continue;
mask |= MADERA_MICB1A_DISCH << (child * 4);
if (pdata->pin[child].active_discharge)
val |= MADERA_MICB1A_DISCH << (child * 4);
}
if (mask) {
reg = MADERA_MIC_BIAS_CTRL_5 + (i * 2);
ret = regmap_update_bits(madera->regmap, reg, mask, val);
if (ret)
dev_warn(madera->dev,
"Failed to write 0x%x (%d)\n",
reg, ret);
dev_dbg(madera->dev,
"Set MICBIAS_CTRL%d mask=0x%x val=0x%x\n",
i + 5, mask, val);
}
/* configure the parent */
init_data = pdata->init_data;
if (!init_data)
continue;
mask = MADERA_MICB1_LVL_MASK | MADERA_MICB1_EXT_CAP |
MADERA_MICB1_BYPASS | MADERA_MICB1_RATE;
if (!init_data->constraints.max_uV)
init_data->constraints.max_uV = 2800000;
val = (init_data->constraints.max_uV - 1500000) / 100000;
val <<= MADERA_MICB1_LVL_SHIFT;
if (pdata->ext_cap)
val |= MADERA_MICB1_EXT_CAP;
/* if no child biases the discharge is set in the parent */
if (num_child_micbias == 0) {
mask |= MADERA_MICB1_DISCH;
if (pdata->active_discharge)
val |= MADERA_MICB1_DISCH;
}
if (init_data->constraints.soft_start)
val |= MADERA_MICB1_RATE;
if (init_data->constraints.valid_ops_mask &
REGULATOR_CHANGE_BYPASS)
val |= MADERA_MICB1_BYPASS;
reg = MADERA_MIC_BIAS_CTRL_1 + i;
ret = regmap_update_bits(madera->regmap, reg, mask, val);
if (ret)
dev_warn(madera->dev, "Failed to write 0x%x (%d)\n",
reg, ret);
dev_dbg(madera->dev, "Set MICBIAS_CTRL%d mask=0x%x val=0x%x\n",
i + 1, mask, val);
}
}
static int madera_dev_select_pinctrl(struct madera *madera,
struct pinctrl *pinctrl,
const char *name)
{
struct pinctrl_state *pinctrl_state;
int ret;
pinctrl_state = pinctrl_lookup_state(pinctrl, name);
/* it's ok if it doesn't exist */
if (!IS_ERR(pinctrl_state)) {
dev_dbg(madera->dev, "Applying pinctrl %s state\n", name);
ret = pinctrl_select_state(pinctrl, pinctrl_state);
if (ret) {
dev_err(madera->dev,
"Failed to select pinctrl %s state: %d\n",
name, ret);
return ret;
}
}
return 0;
}
int madera_dev_init(struct madera *madera)
{
struct device *dev = madera->dev;
const char *name;
unsigned int hwid;
int (*patch_fn)(struct madera *) = NULL;
const struct mfd_cell *mfd_devs;
struct pinctrl *pinctrl;
int n_devs = 0;
int i, ret;
dev_set_drvdata(madera->dev, madera);
BLOCKING_INIT_NOTIFIER_HEAD(&madera->notifier);
if (dev_get_platdata(madera->dev)) {
memcpy(&madera->pdata, dev_get_platdata(madera->dev),
sizeof(madera->pdata));
}
ret = madera_get_reset_gpio(madera);
if (ret)
return ret;
madera_prop_get_micbias(madera);
regcache_cache_only(madera->regmap, true);
regcache_cache_only(madera->regmap_32bit, true);
for (i = 0; i < ARRAY_SIZE(madera_core_supplies); i++)
madera->core_supplies[i].supply = madera_core_supplies[i];
madera->num_core_supplies = ARRAY_SIZE(madera_core_supplies);
/*
* Pinctrl subsystem only configures pinctrls if all referenced pins
* are registered. Create our pinctrl child now so that its pins exist
* otherwise external pinctrl dependencies will fail
* Note: Can't devm_ because it is cleaned up after children are already
* destroyed
*/
ret = mfd_add_devices(madera->dev, PLATFORM_DEVID_NONE,
madera_pinctrl_dev, 1, NULL, 0, NULL);
if (ret) {
dev_err(madera->dev, "Failed to add pinctrl child: %d\n", ret);
return ret;
}
pinctrl = pinctrl_get(dev);
if (IS_ERR(pinctrl)) {
ret = PTR_ERR(pinctrl);
dev_err(madera->dev, "Failed to get pinctrl: %d\n", ret);
goto err_pinctrl_dev;
}
/* Use (optional) minimal config with only external pin bindings */
ret = madera_dev_select_pinctrl(madera, pinctrl, "probe");
if (ret)
goto err_pinctrl;
ret = devm_regulator_bulk_get(dev, madera->num_core_supplies,
madera->core_supplies);
if (ret) {
dev_err(dev, "Failed to request core supplies: %d\n", ret);
goto err_pinctrl;
}
switch (madera->type) {
case CS47L15:
madera->reset_errata = true;
break;
case CS47L35:
case CS47L90:
case CS47L91:
case CS47L92:
case CS47L93:
break;
case CS47L85:
case WM1840:
/* On these DCVDD could be supplied from the onboard LDO1 */
ret = mfd_add_devices(madera->dev, PLATFORM_DEVID_NONE,
madera_ldo1_devs,
ARRAY_SIZE(madera_ldo1_devs),
NULL, 0, NULL);
if (ret) {
dev_err(dev, "Failed to add LDO1 child: %d\n", ret);
goto err_pinctrl;
}
break;
default:
dev_err(madera->dev, "Unknown device type %d\n", madera->type);
ret = -ENODEV;
goto err_pinctrl;
}
/*
* 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.
*/
madera->dcvdd = regulator_get(madera->dev, "DCVDD");
if (IS_ERR(madera->dcvdd)) {
ret = PTR_ERR(madera->dcvdd);
dev_err(dev, "Failed to request DCVDD: %d\n", ret);
goto err_pinctrl;
}
madera->dcvdd_notifier.notifier_call = madera_dcvdd_notify;
ret = regulator_register_notifier(madera->dcvdd,
&madera->dcvdd_notifier);
if (ret) {
dev_err(dev, "Failed to register DCVDD notifier %d\n", ret);
goto err_dcvdd;
}
/* Ensure period of reset asserted before we apply the supplies */
msleep(20);
ret = regulator_bulk_enable(madera->num_core_supplies,
madera->core_supplies);
if (ret) {
dev_err(dev, "Failed to enable core supplies: %d\n", ret);
goto err_notifier;
}
if (madera->reset_errata)
madera_disable_hard_reset(madera);
ret = regulator_enable(madera->dcvdd);
if (ret) {
dev_err(dev, "Failed to enable DCVDD: %d\n", ret);
goto err_enable;
}
if (madera->reset_errata)
usleep_range(ERRATA_DCVDD_MIN_US, ERRATA_DCVDD_MAX_US);
else
madera_disable_hard_reset(madera);
regcache_cache_only(madera->regmap, false);
regcache_cache_only(madera->regmap_32bit, false);
/*
* Verify that this is a chip we know about before we
* starting doing any writes to its registers
*/
ret = regmap_read(madera->regmap, MADERA_SOFTWARE_RESET, &hwid);
if (ret) {
dev_err(dev, "Failed to read ID register: %d\n", ret);
goto err_reset;
}
switch (hwid) {
case CS47L15_SILICON_ID:
case CS47L35_SILICON_ID:
case CS47L85_SILICON_ID:
case CS47L90_SILICON_ID:
case CS47L92_SILICON_ID:
break;
default:
dev_err(madera->dev, "Unknown device ID: %x\n", hwid);
ret = -EINVAL;
goto err_reset;
}
/* If we don't have a reset GPIO use a soft reset */
if (!madera->reset_gpio || madera->reset_errata) {
ret = madera_soft_reset(madera);
if (ret)
goto err_reset;
}
ret = madera_wait_for_boot(madera);
if (ret) {
dev_err(madera->dev, "Device failed initial boot: %d\n", ret);
goto err_reset;
}
ret = regmap_read(madera->regmap, MADERA_HARDWARE_REVISION,
&madera->rev);
if (ret) {
dev_err(dev, "Failed to read revision register: %d\n", ret);
goto err_reset;
}
madera->rev &= MADERA_HW_REVISION_MASK;
name = madera_name_from_type(madera->type);
switch (hwid) {
case CS47L15_SILICON_ID:
if (IS_ENABLED(CONFIG_MFD_CS47L15)) {
switch (madera->type) {
case CS47L15:
patch_fn = cs47l15_patch;
mfd_devs = cs47l15_devs;
n_devs = ARRAY_SIZE(cs47l15_devs);
break;
default:
break;
}
}
break;
case CS47L35_SILICON_ID:
if (IS_ENABLED(CONFIG_MFD_CS47L35)) {
switch (madera->type) {
case CS47L35:
patch_fn = cs47l35_patch;
mfd_devs = cs47l35_devs;
n_devs = ARRAY_SIZE(cs47l35_devs);
break;
default:
break;
}
}
break;
case CS47L85_SILICON_ID:
if (IS_ENABLED(CONFIG_MFD_CS47L85)) {
switch (madera->type) {
case CS47L85:
case WM1840:
patch_fn = cs47l85_patch;
mfd_devs = cs47l85_devs;
n_devs = ARRAY_SIZE(cs47l85_devs);
break;
default:
break;
}
}
break;
case CS47L90_SILICON_ID:
if (IS_ENABLED(CONFIG_MFD_CS47L90)) {
switch (madera->type) {
case CS47L90:
case CS47L91:
patch_fn = cs47l90_patch;
mfd_devs = cs47l90_devs;
n_devs = ARRAY_SIZE(cs47l90_devs);
break;
default:
break;
}
}
break;
case CS47L92_SILICON_ID:
if (IS_ENABLED(CONFIG_MFD_CS47L92)) {
switch (madera->type) {
case CS47L92:
case CS47L93:
patch_fn = cs47l92_patch;
mfd_devs = cs47l92_devs;
n_devs = ARRAY_SIZE(cs47l92_devs);
break;
default:
break;
}
}
break;
default:
break;
}
if (!n_devs) {
dev_err(madera->dev, "Device ID 0x%x not a %s\n", hwid, name);
ret = -ENODEV;
goto err_reset;
}
dev_info(dev, "%s silicon revision %d\n", name, madera->rev);
/* Apply hardware patch */
if (patch_fn) {
ret = patch_fn(madera);
if (ret) {
dev_err(madera->dev, "Failed to apply patch %d\n", ret);
goto err_reset;
}
}
/* Apply (optional) main pinctrl config, this will configure our pins */
ret = madera_dev_select_pinctrl(madera, pinctrl, "active");
if (ret)
goto err_reset;
/* Init 32k clock sourced from MCLK2 */
ret = regmap_update_bits(madera->regmap,
MADERA_CLOCK_32K_1,
MADERA_CLK_32K_ENA_MASK | MADERA_CLK_32K_SRC_MASK,
MADERA_CLK_32K_ENA | MADERA_32KZ_MCLK2);
if (ret) {
dev_err(madera->dev, "Failed to init 32k clock: %d\n", ret);
goto err_reset;
}
madera_configure_micbias(madera);
pm_runtime_set_active(madera->dev);
pm_runtime_enable(madera->dev);
pm_runtime_set_autosuspend_delay(madera->dev, 100);
pm_runtime_use_autosuspend(madera->dev);
ret = mfd_add_devices(madera->dev, PLATFORM_DEVID_NONE,
mfd_devs, n_devs,
NULL, 0, NULL);
if (ret) {
dev_err(madera->dev, "Failed to add subdevices: %d\n", ret);
goto err_pm_runtime;
}
pinctrl_put(pinctrl);
return 0;
err_pm_runtime:
pm_runtime_disable(madera->dev);
err_reset:
madera_enable_hard_reset(madera);
regulator_disable(madera->dcvdd);
err_enable:
regulator_bulk_disable(madera->num_core_supplies,
madera->core_supplies);
err_notifier:
regulator_unregister_notifier(madera->dcvdd, &madera->dcvdd_notifier);
err_dcvdd:
regulator_put(madera->dcvdd);
err_pinctrl:
pinctrl_put(pinctrl);
err_pinctrl_dev:
mfd_remove_devices(dev);
return ret;
}
EXPORT_SYMBOL_GPL(madera_dev_init);
int madera_dev_exit(struct madera *madera)
{
/* Prevent any IRQs being serviced while we clean up */
disable_irq(madera->irq);
/*
* DCVDD could be supplied by a child node, we must disable it before
* removing the children, and prevent PM runtime from turning it back on
*/
pm_runtime_disable(madera->dev);
regulator_disable(madera->dcvdd);
regulator_unregister_notifier(madera->dcvdd, &madera->dcvdd_notifier);
regulator_put(madera->dcvdd);
mfd_remove_devices(madera->dev);
madera_enable_hard_reset(madera);
regulator_bulk_disable(madera->num_core_supplies,
madera->core_supplies);
return 0;
}
EXPORT_SYMBOL_GPL(madera_dev_exit);
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