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linux/drivers/mfd/wm831x-core.c
Mark Brown 7ef47a12a6 mfd: wm831x: Use maple tree register cache 
regmap has introduced a maple tree based register cache which makes use of
this more advanced data structure which has been added to the kernel
recently. Maple trees are much flatter than rbtrees, meaning that they do
not grow to such depths when the register map is sparse which makes access
a bit more efficient. The maple tree cache type is still a bit of a work
in progress but should be effective for some devices already.

The wm831x devices have a pretty sparse register map and being always on
devices never do cache syncs so don't hit the major current disadvantage
so they should be good candiates for using the maple tree cache.  Update
to do so, there should be little if any visible difference at runtime.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230419-mfd-wm831x-maple-v1-1-e03e39d7bb0b@kernel.org
2023-06-15 09:19:36 +01:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* wm831x-core.c -- Device access for Wolfson WM831x PMICs
*
* Copyright 2009 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/export.h>
#include <linux/bcd.h>
#include <linux/delay.h>
#include <linux/mfd/core.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/mfd/wm831x/core.h>
#include <linux/mfd/wm831x/pdata.h>
#include <linux/mfd/wm831x/irq.h>
#include <linux/mfd/wm831x/auxadc.h>
#include <linux/mfd/wm831x/otp.h>
#include <linux/mfd/wm831x/pmu.h>
#include <linux/mfd/wm831x/regulator.h>
/* Current settings - values are 2*2^(reg_val/4) microamps. These are
* exported since they are used by multiple drivers.
*/
const unsigned int wm831x_isinkv_values[WM831X_ISINK_MAX_ISEL + 1] = {
2,
2,
3,
3,
4,
5,
6,
7,
8,
10,
11,
13,
16,
19,
23,
27,
32,
38,
45,
54,
64,
76,
91,
108,
128,
152,
181,
215,
256,
304,
362,
431,
512,
609,
724,
861,
1024,
1218,
1448,
1722,
2048,
2435,
2896,
3444,
4096,
4871,
5793,
6889,
8192,
9742,
11585,
13777,
16384,
19484,
23170,
27554,
};
EXPORT_SYMBOL_GPL(wm831x_isinkv_values);
static int wm831x_reg_locked(struct wm831x *wm831x, unsigned short reg)
{
if (!wm831x->locked)
return 0;
switch (reg) {
case WM831X_WATCHDOG:
case WM831X_DC4_CONTROL:
case WM831X_ON_PIN_CONTROL:
case WM831X_BACKUP_CHARGER_CONTROL:
case WM831X_CHARGER_CONTROL_1:
case WM831X_CHARGER_CONTROL_2:
return 1;
default:
return 0;
}
}
/**
* wm831x_reg_lock: Unlock user keyed registers
*
* The WM831x has a user key preventing writes to particularly
* critical registers. This function locks those registers,
* allowing writes to them.
*
* @wm831x: pointer to local driver data structure
*/
void wm831x_reg_lock(struct wm831x *wm831x)
{
int ret;
ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
if (ret == 0) {
dev_vdbg(wm831x->dev, "Registers locked\n");
mutex_lock(&wm831x->io_lock);
WARN_ON(wm831x->locked);
wm831x->locked = 1;
mutex_unlock(&wm831x->io_lock);
} else {
dev_err(wm831x->dev, "Failed to lock registers: %d\n", ret);
}
}
EXPORT_SYMBOL_GPL(wm831x_reg_lock);
/**
* wm831x_reg_unlock: Unlock user keyed registers
*
* The WM831x has a user key preventing writes to particularly
* critical registers. This function locks those registers,
* preventing spurious writes.
*
* @wm831x: pointer to local driver data structure
*/
int wm831x_reg_unlock(struct wm831x *wm831x)
{
int ret;
/* 0x9716 is the value required to unlock the registers */
ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0x9716);
if (ret == 0) {
dev_vdbg(wm831x->dev, "Registers unlocked\n");
mutex_lock(&wm831x->io_lock);
WARN_ON(!wm831x->locked);
wm831x->locked = 0;
mutex_unlock(&wm831x->io_lock);
}
return ret;
}
EXPORT_SYMBOL_GPL(wm831x_reg_unlock);
static bool wm831x_reg_readable(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM831X_RESET_ID:
case WM831X_REVISION:
case WM831X_PARENT_ID:
case WM831X_SYSVDD_CONTROL:
case WM831X_THERMAL_MONITORING:
case WM831X_POWER_STATE:
case WM831X_WATCHDOG:
case WM831X_ON_PIN_CONTROL:
case WM831X_RESET_CONTROL:
case WM831X_CONTROL_INTERFACE:
case WM831X_SECURITY_KEY:
case WM831X_SOFTWARE_SCRATCH:
case WM831X_OTP_CONTROL:
case WM831X_GPIO_LEVEL:
case WM831X_SYSTEM_STATUS:
case WM831X_ON_SOURCE:
case WM831X_OFF_SOURCE:
case WM831X_SYSTEM_INTERRUPTS:
case WM831X_INTERRUPT_STATUS_1:
case WM831X_INTERRUPT_STATUS_2:
case WM831X_INTERRUPT_STATUS_3:
case WM831X_INTERRUPT_STATUS_4:
case WM831X_INTERRUPT_STATUS_5:
case WM831X_IRQ_CONFIG:
case WM831X_SYSTEM_INTERRUPTS_MASK:
case WM831X_INTERRUPT_STATUS_1_MASK:
case WM831X_INTERRUPT_STATUS_2_MASK:
case WM831X_INTERRUPT_STATUS_3_MASK:
case WM831X_INTERRUPT_STATUS_4_MASK:
case WM831X_INTERRUPT_STATUS_5_MASK:
case WM831X_RTC_WRITE_COUNTER:
case WM831X_RTC_TIME_1:
case WM831X_RTC_TIME_2:
case WM831X_RTC_ALARM_1:
case WM831X_RTC_ALARM_2:
case WM831X_RTC_CONTROL:
case WM831X_RTC_TRIM:
case WM831X_TOUCH_CONTROL_1:
case WM831X_TOUCH_CONTROL_2:
case WM831X_TOUCH_DATA_X:
case WM831X_TOUCH_DATA_Y:
case WM831X_TOUCH_DATA_Z:
case WM831X_AUXADC_DATA:
case WM831X_AUXADC_CONTROL:
case WM831X_AUXADC_SOURCE:
case WM831X_COMPARATOR_CONTROL:
case WM831X_COMPARATOR_1:
case WM831X_COMPARATOR_2:
case WM831X_COMPARATOR_3:
case WM831X_COMPARATOR_4:
case WM831X_GPIO1_CONTROL:
case WM831X_GPIO2_CONTROL:
case WM831X_GPIO3_CONTROL:
case WM831X_GPIO4_CONTROL:
case WM831X_GPIO5_CONTROL:
case WM831X_GPIO6_CONTROL:
case WM831X_GPIO7_CONTROL:
case WM831X_GPIO8_CONTROL:
case WM831X_GPIO9_CONTROL:
case WM831X_GPIO10_CONTROL:
case WM831X_GPIO11_CONTROL:
case WM831X_GPIO12_CONTROL:
case WM831X_GPIO13_CONTROL:
case WM831X_GPIO14_CONTROL:
case WM831X_GPIO15_CONTROL:
case WM831X_GPIO16_CONTROL:
case WM831X_CHARGER_CONTROL_1:
case WM831X_CHARGER_CONTROL_2:
case WM831X_CHARGER_STATUS:
case WM831X_BACKUP_CHARGER_CONTROL:
case WM831X_STATUS_LED_1:
case WM831X_STATUS_LED_2:
case WM831X_CURRENT_SINK_1:
case WM831X_CURRENT_SINK_2:
case WM831X_DCDC_ENABLE:
case WM831X_LDO_ENABLE:
case WM831X_DCDC_STATUS:
case WM831X_LDO_STATUS:
case WM831X_DCDC_UV_STATUS:
case WM831X_LDO_UV_STATUS:
case WM831X_DC1_CONTROL_1:
case WM831X_DC1_CONTROL_2:
case WM831X_DC1_ON_CONFIG:
case WM831X_DC1_SLEEP_CONTROL:
case WM831X_DC1_DVS_CONTROL:
case WM831X_DC2_CONTROL_1:
case WM831X_DC2_CONTROL_2:
case WM831X_DC2_ON_CONFIG:
case WM831X_DC2_SLEEP_CONTROL:
case WM831X_DC2_DVS_CONTROL:
case WM831X_DC3_CONTROL_1:
case WM831X_DC3_CONTROL_2:
case WM831X_DC3_ON_CONFIG:
case WM831X_DC3_SLEEP_CONTROL:
case WM831X_DC4_CONTROL:
case WM831X_DC4_SLEEP_CONTROL:
case WM831X_EPE1_CONTROL:
case WM831X_EPE2_CONTROL:
case WM831X_LDO1_CONTROL:
case WM831X_LDO1_ON_CONTROL:
case WM831X_LDO1_SLEEP_CONTROL:
case WM831X_LDO2_CONTROL:
case WM831X_LDO2_ON_CONTROL:
case WM831X_LDO2_SLEEP_CONTROL:
case WM831X_LDO3_CONTROL:
case WM831X_LDO3_ON_CONTROL:
case WM831X_LDO3_SLEEP_CONTROL:
case WM831X_LDO4_CONTROL:
case WM831X_LDO4_ON_CONTROL:
case WM831X_LDO4_SLEEP_CONTROL:
case WM831X_LDO5_CONTROL:
case WM831X_LDO5_ON_CONTROL:
case WM831X_LDO5_SLEEP_CONTROL:
case WM831X_LDO6_CONTROL:
case WM831X_LDO6_ON_CONTROL:
case WM831X_LDO6_SLEEP_CONTROL:
case WM831X_LDO7_CONTROL:
case WM831X_LDO7_ON_CONTROL:
case WM831X_LDO7_SLEEP_CONTROL:
case WM831X_LDO8_CONTROL:
case WM831X_LDO8_ON_CONTROL:
case WM831X_LDO8_SLEEP_CONTROL:
case WM831X_LDO9_CONTROL:
case WM831X_LDO9_ON_CONTROL:
case WM831X_LDO9_SLEEP_CONTROL:
case WM831X_LDO10_CONTROL:
case WM831X_LDO10_ON_CONTROL:
case WM831X_LDO10_SLEEP_CONTROL:
case WM831X_LDO11_ON_CONTROL:
case WM831X_LDO11_SLEEP_CONTROL:
case WM831X_POWER_GOOD_SOURCE_1:
case WM831X_POWER_GOOD_SOURCE_2:
case WM831X_CLOCK_CONTROL_1:
case WM831X_CLOCK_CONTROL_2:
case WM831X_FLL_CONTROL_1:
case WM831X_FLL_CONTROL_2:
case WM831X_FLL_CONTROL_3:
case WM831X_FLL_CONTROL_4:
case WM831X_FLL_CONTROL_5:
case WM831X_UNIQUE_ID_1:
case WM831X_UNIQUE_ID_2:
case WM831X_UNIQUE_ID_3:
case WM831X_UNIQUE_ID_4:
case WM831X_UNIQUE_ID_5:
case WM831X_UNIQUE_ID_6:
case WM831X_UNIQUE_ID_7:
case WM831X_UNIQUE_ID_8:
case WM831X_FACTORY_OTP_ID:
case WM831X_FACTORY_OTP_1:
case WM831X_FACTORY_OTP_2:
case WM831X_FACTORY_OTP_3:
case WM831X_FACTORY_OTP_4:
case WM831X_FACTORY_OTP_5:
case WM831X_CUSTOMER_OTP_ID:
case WM831X_DC1_OTP_CONTROL:
case WM831X_DC2_OTP_CONTROL:
case WM831X_DC3_OTP_CONTROL:
case WM831X_LDO1_2_OTP_CONTROL:
case WM831X_LDO3_4_OTP_CONTROL:
case WM831X_LDO5_6_OTP_CONTROL:
case WM831X_LDO7_8_OTP_CONTROL:
case WM831X_LDO9_10_OTP_CONTROL:
case WM831X_LDO11_EPE_CONTROL:
case WM831X_GPIO1_OTP_CONTROL:
case WM831X_GPIO2_OTP_CONTROL:
case WM831X_GPIO3_OTP_CONTROL:
case WM831X_GPIO4_OTP_CONTROL:
case WM831X_GPIO5_OTP_CONTROL:
case WM831X_GPIO6_OTP_CONTROL:
case WM831X_DBE_CHECK_DATA:
return true;
default:
return false;
}
}
static bool wm831x_reg_writeable(struct device *dev, unsigned int reg)
{
struct wm831x *wm831x = dev_get_drvdata(dev);
if (wm831x_reg_locked(wm831x, reg))
return false;
switch (reg) {
case WM831X_SYSVDD_CONTROL:
case WM831X_THERMAL_MONITORING:
case WM831X_POWER_STATE:
case WM831X_WATCHDOG:
case WM831X_ON_PIN_CONTROL:
case WM831X_RESET_CONTROL:
case WM831X_CONTROL_INTERFACE:
case WM831X_SECURITY_KEY:
case WM831X_SOFTWARE_SCRATCH:
case WM831X_OTP_CONTROL:
case WM831X_GPIO_LEVEL:
case WM831X_INTERRUPT_STATUS_1:
case WM831X_INTERRUPT_STATUS_2:
case WM831X_INTERRUPT_STATUS_3:
case WM831X_INTERRUPT_STATUS_4:
case WM831X_INTERRUPT_STATUS_5:
case WM831X_IRQ_CONFIG:
case WM831X_SYSTEM_INTERRUPTS_MASK:
case WM831X_INTERRUPT_STATUS_1_MASK:
case WM831X_INTERRUPT_STATUS_2_MASK:
case WM831X_INTERRUPT_STATUS_3_MASK:
case WM831X_INTERRUPT_STATUS_4_MASK:
case WM831X_INTERRUPT_STATUS_5_MASK:
case WM831X_RTC_TIME_1:
case WM831X_RTC_TIME_2:
case WM831X_RTC_ALARM_1:
case WM831X_RTC_ALARM_2:
case WM831X_RTC_CONTROL:
case WM831X_RTC_TRIM:
case WM831X_TOUCH_CONTROL_1:
case WM831X_TOUCH_CONTROL_2:
case WM831X_AUXADC_CONTROL:
case WM831X_AUXADC_SOURCE:
case WM831X_COMPARATOR_CONTROL:
case WM831X_COMPARATOR_1:
case WM831X_COMPARATOR_2:
case WM831X_COMPARATOR_3:
case WM831X_COMPARATOR_4:
case WM831X_GPIO1_CONTROL:
case WM831X_GPIO2_CONTROL:
case WM831X_GPIO3_CONTROL:
case WM831X_GPIO4_CONTROL:
case WM831X_GPIO5_CONTROL:
case WM831X_GPIO6_CONTROL:
case WM831X_GPIO7_CONTROL:
case WM831X_GPIO8_CONTROL:
case WM831X_GPIO9_CONTROL:
case WM831X_GPIO10_CONTROL:
case WM831X_GPIO11_CONTROL:
case WM831X_GPIO12_CONTROL:
case WM831X_GPIO13_CONTROL:
case WM831X_GPIO14_CONTROL:
case WM831X_GPIO15_CONTROL:
case WM831X_GPIO16_CONTROL:
case WM831X_CHARGER_CONTROL_1:
case WM831X_CHARGER_CONTROL_2:
case WM831X_CHARGER_STATUS:
case WM831X_BACKUP_CHARGER_CONTROL:
case WM831X_STATUS_LED_1:
case WM831X_STATUS_LED_2:
case WM831X_CURRENT_SINK_1:
case WM831X_CURRENT_SINK_2:
case WM831X_DCDC_ENABLE:
case WM831X_LDO_ENABLE:
case WM831X_DC1_CONTROL_1:
case WM831X_DC1_CONTROL_2:
case WM831X_DC1_ON_CONFIG:
case WM831X_DC1_SLEEP_CONTROL:
case WM831X_DC1_DVS_CONTROL:
case WM831X_DC2_CONTROL_1:
case WM831X_DC2_CONTROL_2:
case WM831X_DC2_ON_CONFIG:
case WM831X_DC2_SLEEP_CONTROL:
case WM831X_DC2_DVS_CONTROL:
case WM831X_DC3_CONTROL_1:
case WM831X_DC3_CONTROL_2:
case WM831X_DC3_ON_CONFIG:
case WM831X_DC3_SLEEP_CONTROL:
case WM831X_DC4_CONTROL:
case WM831X_DC4_SLEEP_CONTROL:
case WM831X_EPE1_CONTROL:
case WM831X_EPE2_CONTROL:
case WM831X_LDO1_CONTROL:
case WM831X_LDO1_ON_CONTROL:
case WM831X_LDO1_SLEEP_CONTROL:
case WM831X_LDO2_CONTROL:
case WM831X_LDO2_ON_CONTROL:
case WM831X_LDO2_SLEEP_CONTROL:
case WM831X_LDO3_CONTROL:
case WM831X_LDO3_ON_CONTROL:
case WM831X_LDO3_SLEEP_CONTROL:
case WM831X_LDO4_CONTROL:
case WM831X_LDO4_ON_CONTROL:
case WM831X_LDO4_SLEEP_CONTROL:
case WM831X_LDO5_CONTROL:
case WM831X_LDO5_ON_CONTROL:
case WM831X_LDO5_SLEEP_CONTROL:
case WM831X_LDO6_CONTROL:
case WM831X_LDO6_ON_CONTROL:
case WM831X_LDO6_SLEEP_CONTROL:
case WM831X_LDO7_CONTROL:
case WM831X_LDO7_ON_CONTROL:
case WM831X_LDO7_SLEEP_CONTROL:
case WM831X_LDO8_CONTROL:
case WM831X_LDO8_ON_CONTROL:
case WM831X_LDO8_SLEEP_CONTROL:
case WM831X_LDO9_CONTROL:
case WM831X_LDO9_ON_CONTROL:
case WM831X_LDO9_SLEEP_CONTROL:
case WM831X_LDO10_CONTROL:
case WM831X_LDO10_ON_CONTROL:
case WM831X_LDO10_SLEEP_CONTROL:
case WM831X_LDO11_ON_CONTROL:
case WM831X_LDO11_SLEEP_CONTROL:
case WM831X_POWER_GOOD_SOURCE_1:
case WM831X_POWER_GOOD_SOURCE_2:
case WM831X_CLOCK_CONTROL_1:
case WM831X_CLOCK_CONTROL_2:
case WM831X_FLL_CONTROL_1:
case WM831X_FLL_CONTROL_2:
case WM831X_FLL_CONTROL_3:
case WM831X_FLL_CONTROL_4:
case WM831X_FLL_CONTROL_5:
return true;
default:
return false;
}
}
static bool wm831x_reg_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM831X_SYSTEM_STATUS:
case WM831X_ON_SOURCE:
case WM831X_OFF_SOURCE:
case WM831X_GPIO_LEVEL:
case WM831X_SYSTEM_INTERRUPTS:
case WM831X_INTERRUPT_STATUS_1:
case WM831X_INTERRUPT_STATUS_2:
case WM831X_INTERRUPT_STATUS_3:
case WM831X_INTERRUPT_STATUS_4:
case WM831X_INTERRUPT_STATUS_5:
case WM831X_RTC_TIME_1:
case WM831X_RTC_TIME_2:
case WM831X_TOUCH_DATA_X:
case WM831X_TOUCH_DATA_Y:
case WM831X_TOUCH_DATA_Z:
case WM831X_AUXADC_DATA:
case WM831X_CHARGER_STATUS:
case WM831X_DCDC_STATUS:
case WM831X_LDO_STATUS:
case WM831X_DCDC_UV_STATUS:
case WM831X_LDO_UV_STATUS:
return true;
default:
return false;
}
}
/**
* wm831x_reg_read: Read a single WM831x register.
*
* @wm831x: Device to read from.
* @reg: Register to read.
*/
int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
{
unsigned int val;
int ret;
ret = regmap_read(wm831x->regmap, reg, &val);
if (ret < 0)
return ret;
else
return val;
}
EXPORT_SYMBOL_GPL(wm831x_reg_read);
/**
* wm831x_bulk_read: Read multiple WM831x registers
*
* @wm831x: Device to read from
* @reg: First register
* @count: Number of registers
* @buf: Buffer to fill.
*/
int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
int count, u16 *buf)
{
return regmap_bulk_read(wm831x->regmap, reg, buf, count);
}
EXPORT_SYMBOL_GPL(wm831x_bulk_read);
static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
int bytes, void *src)
{
u16 *buf = src;
int i, ret;
BUG_ON(bytes % 2);
BUG_ON(bytes <= 0);
for (i = 0; i < bytes / 2; i++) {
if (wm831x_reg_locked(wm831x, reg))
return -EPERM;
dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
buf[i], reg + i, reg + i);
ret = regmap_write(wm831x->regmap, reg + i, buf[i]);
if (ret != 0)
return ret;
}
return 0;
}
/**
* wm831x_reg_write: Write a single WM831x register.
*
* @wm831x: Device to write to.
* @reg: Register to write to.
* @val: Value to write.
*/
int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
unsigned short val)
{
int ret;
mutex_lock(&wm831x->io_lock);
ret = wm831x_write(wm831x, reg, 2, &val);
mutex_unlock(&wm831x->io_lock);
return ret;
}
EXPORT_SYMBOL_GPL(wm831x_reg_write);
/**
* wm831x_set_bits: Set the value of a bitfield in a WM831x register
*
* @wm831x: Device to write to.
* @reg: Register to write to.
* @mask: Mask of bits to set.
* @val: Value to set (unshifted)
*/
int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
unsigned short mask, unsigned short val)
{
int ret;
mutex_lock(&wm831x->io_lock);
if (!wm831x_reg_locked(wm831x, reg))
ret = regmap_update_bits(wm831x->regmap, reg, mask, val);
else
ret = -EPERM;
mutex_unlock(&wm831x->io_lock);
return ret;
}
EXPORT_SYMBOL_GPL(wm831x_set_bits);
static const struct resource wm831x_dcdc1_resources[] = {
{
.start = WM831X_DC1_CONTROL_1,
.end = WM831X_DC1_DVS_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC1, "UV"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_HC_DC1, "HC"),
};
static const struct resource wm831x_dcdc2_resources[] = {
{
.start = WM831X_DC2_CONTROL_1,
.end = WM831X_DC2_DVS_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC2, "UV"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_HC_DC2, "HC"),
};
static const struct resource wm831x_dcdc3_resources[] = {
{
.start = WM831X_DC3_CONTROL_1,
.end = WM831X_DC3_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC3, "UV"),
};
static const struct resource wm831x_dcdc4_resources[] = {
{
.start = WM831X_DC4_CONTROL,
.end = WM831X_DC4_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC4, "UV"),
};
static const struct resource wm8320_dcdc4_buck_resources[] = {
{
.start = WM831X_DC4_CONTROL,
.end = WM832X_DC4_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC4, "UV"),
};
static const struct resource wm831x_gpio_resources[] = {
{
.start = WM831X_IRQ_GPIO_1,
.end = WM831X_IRQ_GPIO_16,
.flags = IORESOURCE_IRQ,
},
};
static const struct resource wm831x_isink1_resources[] = {
{
.start = WM831X_CURRENT_SINK_1,
.end = WM831X_CURRENT_SINK_1,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ(WM831X_IRQ_CS1),
};
static const struct resource wm831x_isink2_resources[] = {
{
.start = WM831X_CURRENT_SINK_2,
.end = WM831X_CURRENT_SINK_2,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ(WM831X_IRQ_CS2),
};
static const struct resource wm831x_ldo1_resources[] = {
{
.start = WM831X_LDO1_CONTROL,
.end = WM831X_LDO1_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO1, "UV"),
};
static const struct resource wm831x_ldo2_resources[] = {
{
.start = WM831X_LDO2_CONTROL,
.end = WM831X_LDO2_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO2, "UV"),
};
static const struct resource wm831x_ldo3_resources[] = {
{
.start = WM831X_LDO3_CONTROL,
.end = WM831X_LDO3_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO3, "UV"),
};
static const struct resource wm831x_ldo4_resources[] = {
{
.start = WM831X_LDO4_CONTROL,
.end = WM831X_LDO4_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO4, "UV"),
};
static const struct resource wm831x_ldo5_resources[] = {
{
.start = WM831X_LDO5_CONTROL,
.end = WM831X_LDO5_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO5, "UV"),
};
static const struct resource wm831x_ldo6_resources[] = {
{
.start = WM831X_LDO6_CONTROL,
.end = WM831X_LDO6_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO6, "UV"),
};
static const struct resource wm831x_ldo7_resources[] = {
{
.start = WM831X_LDO7_CONTROL,
.end = WM831X_LDO7_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO7, "UV"),
};
static const struct resource wm831x_ldo8_resources[] = {
{
.start = WM831X_LDO8_CONTROL,
.end = WM831X_LDO8_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO8, "UV"),
};
static const struct resource wm831x_ldo9_resources[] = {
{
.start = WM831X_LDO9_CONTROL,
.end = WM831X_LDO9_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO9, "UV"),
};
static const struct resource wm831x_ldo10_resources[] = {
{
.start = WM831X_LDO10_CONTROL,
.end = WM831X_LDO10_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO10, "UV"),
};
static const struct resource wm831x_ldo11_resources[] = {
{
.start = WM831X_LDO11_ON_CONTROL,
.end = WM831X_LDO11_SLEEP_CONTROL,
.flags = IORESOURCE_REG,
},
};
static const struct resource wm831x_on_resources[] = {
DEFINE_RES_IRQ(WM831X_IRQ_ON),
};
static const struct resource wm831x_power_resources[] = {
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_SYSLO, "SYSLO"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_PWR_SRC, "PWR SRC"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_USB_CURR, "USB CURR"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_HOT, "BATT HOT"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_COLD, "BATT COLD"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_FAIL, "BATT FAIL"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_OV, "OV"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_END, "END"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_TO, "TO"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_MODE, "MODE"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_START, "START"),
};
static const struct resource wm831x_rtc_resources[] = {
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_RTC_PER, "PER"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_RTC_ALM, "ALM"),
};
static const struct resource wm831x_status1_resources[] = {
{
.start = WM831X_STATUS_LED_1,
.end = WM831X_STATUS_LED_1,
.flags = IORESOURCE_REG,
},
};
static const struct resource wm831x_status2_resources[] = {
{
.start = WM831X_STATUS_LED_2,
.end = WM831X_STATUS_LED_2,
.flags = IORESOURCE_REG,
},
};
static const struct resource wm831x_touch_resources[] = {
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_TCHPD, "TCHPD"),
DEFINE_RES_IRQ_NAMED(WM831X_IRQ_TCHDATA, "TCHDATA"),
};
static const struct resource wm831x_wdt_resources[] = {
DEFINE_RES_IRQ(WM831X_IRQ_WDOG_TO),
};
static const struct mfd_cell wm8310_devs[] = {
{
.name = "wm831x-backup",
},
{
.name = "wm831x-buckv",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
.resources = wm831x_dcdc1_resources,
},
{
.name = "wm831x-buckv",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
.resources = wm831x_dcdc2_resources,
},
{
.name = "wm831x-buckp",
.id = 3,
.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
.resources = wm831x_dcdc3_resources,
},
{
.name = "wm831x-boostp",
.id = 4,
.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
.resources = wm831x_dcdc4_resources,
},
{
.name = "wm831x-clk",
},
{
.name = "wm831x-epe",
.id = 1,
},
{
.name = "wm831x-epe",
.id = 2,
},
{
.name = "wm831x-gpio",
.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
.resources = wm831x_gpio_resources,
},
{
.name = "wm831x-hwmon",
},
{
.name = "wm831x-isink",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
.resources = wm831x_isink1_resources,
},
{
.name = "wm831x-isink",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
.resources = wm831x_isink2_resources,
},
{
.name = "wm831x-ldo",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
.resources = wm831x_ldo1_resources,
},
{
.name = "wm831x-ldo",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
.resources = wm831x_ldo2_resources,
},
{
.name = "wm831x-ldo",
.id = 3,
.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
.resources = wm831x_ldo3_resources,
},
{
.name = "wm831x-ldo",
.id = 4,
.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
.resources = wm831x_ldo4_resources,
},
{
.name = "wm831x-ldo",
.id = 5,
.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
.resources = wm831x_ldo5_resources,
},
{
.name = "wm831x-ldo",
.id = 6,
.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
.resources = wm831x_ldo6_resources,
},
{
.name = "wm831x-aldo",
.id = 7,
.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
.resources = wm831x_ldo7_resources,
},
{
.name = "wm831x-aldo",
.id = 8,
.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
.resources = wm831x_ldo8_resources,
},
{
.name = "wm831x-aldo",
.id = 9,
.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
.resources = wm831x_ldo9_resources,
},
{
.name = "wm831x-aldo",
.id = 10,
.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
.resources = wm831x_ldo10_resources,
},
{
.name = "wm831x-alive-ldo",
.id = 11,
.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
.resources = wm831x_ldo11_resources,
},
{
.name = "wm831x-on",
.num_resources = ARRAY_SIZE(wm831x_on_resources),
.resources = wm831x_on_resources,
},
{
.name = "wm831x-power",
.num_resources = ARRAY_SIZE(wm831x_power_resources),
.resources = wm831x_power_resources,
},
{
.name = "wm831x-status",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_status1_resources),
.resources = wm831x_status1_resources,
},
{
.name = "wm831x-status",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_status2_resources),
.resources = wm831x_status2_resources,
},
{
.name = "wm831x-watchdog",
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
.resources = wm831x_wdt_resources,
},
};
static const struct mfd_cell wm8311_devs[] = {
{
.name = "wm831x-backup",
},
{
.name = "wm831x-buckv",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
.resources = wm831x_dcdc1_resources,
},
{
.name = "wm831x-buckv",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
.resources = wm831x_dcdc2_resources,
},
{
.name = "wm831x-buckp",
.id = 3,
.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
.resources = wm831x_dcdc3_resources,
},
{
.name = "wm831x-boostp",
.id = 4,
.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
.resources = wm831x_dcdc4_resources,
},
{
.name = "wm831x-clk",
},
{
.name = "wm831x-epe",
.id = 1,
},
{
.name = "wm831x-epe",
.id = 2,
},
{
.name = "wm831x-gpio",
.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
.resources = wm831x_gpio_resources,
},
{
.name = "wm831x-hwmon",
},
{
.name = "wm831x-isink",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
.resources = wm831x_isink1_resources,
},
{
.name = "wm831x-isink",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
.resources = wm831x_isink2_resources,
},
{
.name = "wm831x-ldo",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
.resources = wm831x_ldo1_resources,
},
{
.name = "wm831x-ldo",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
.resources = wm831x_ldo2_resources,
},
{
.name = "wm831x-ldo",
.id = 3,
.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
.resources = wm831x_ldo3_resources,
},
{
.name = "wm831x-ldo",
.id = 4,
.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
.resources = wm831x_ldo4_resources,
},
{
.name = "wm831x-ldo",
.id = 5,
.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
.resources = wm831x_ldo5_resources,
},
{
.name = "wm831x-aldo",
.id = 7,
.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
.resources = wm831x_ldo7_resources,
},
{
.name = "wm831x-alive-ldo",
.id = 11,
.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
.resources = wm831x_ldo11_resources,
},
{
.name = "wm831x-on",
.num_resources = ARRAY_SIZE(wm831x_on_resources),
.resources = wm831x_on_resources,
},
{
.name = "wm831x-power",
.num_resources = ARRAY_SIZE(wm831x_power_resources),
.resources = wm831x_power_resources,
},
{
.name = "wm831x-status",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_status1_resources),
.resources = wm831x_status1_resources,
},
{
.name = "wm831x-status",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_status2_resources),
.resources = wm831x_status2_resources,
},
{
.name = "wm831x-watchdog",
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
.resources = wm831x_wdt_resources,
},
};
static const struct mfd_cell wm8312_devs[] = {
{
.name = "wm831x-backup",
},
{
.name = "wm831x-buckv",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
.resources = wm831x_dcdc1_resources,
},
{
.name = "wm831x-buckv",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
.resources = wm831x_dcdc2_resources,
},
{
.name = "wm831x-buckp",
.id = 3,
.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
.resources = wm831x_dcdc3_resources,
},
{
.name = "wm831x-boostp",
.id = 4,
.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
.resources = wm831x_dcdc4_resources,
},
{
.name = "wm831x-clk",
},
{
.name = "wm831x-epe",
.id = 1,
},
{
.name = "wm831x-epe",
.id = 2,
},
{
.name = "wm831x-gpio",
.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
.resources = wm831x_gpio_resources,
},
{
.name = "wm831x-hwmon",
},
{
.name = "wm831x-isink",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
.resources = wm831x_isink1_resources,
},
{
.name = "wm831x-isink",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
.resources = wm831x_isink2_resources,
},
{
.name = "wm831x-ldo",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
.resources = wm831x_ldo1_resources,
},
{
.name = "wm831x-ldo",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
.resources = wm831x_ldo2_resources,
},
{
.name = "wm831x-ldo",
.id = 3,
.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
.resources = wm831x_ldo3_resources,
},
{
.name = "wm831x-ldo",
.id = 4,
.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
.resources = wm831x_ldo4_resources,
},
{
.name = "wm831x-ldo",
.id = 5,
.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
.resources = wm831x_ldo5_resources,
},
{
.name = "wm831x-ldo",
.id = 6,
.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
.resources = wm831x_ldo6_resources,
},
{
.name = "wm831x-aldo",
.id = 7,
.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
.resources = wm831x_ldo7_resources,
},
{
.name = "wm831x-aldo",
.id = 8,
.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
.resources = wm831x_ldo8_resources,
},
{
.name = "wm831x-aldo",
.id = 9,
.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
.resources = wm831x_ldo9_resources,
},
{
.name = "wm831x-aldo",
.id = 10,
.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
.resources = wm831x_ldo10_resources,
},
{
.name = "wm831x-alive-ldo",
.id = 11,
.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
.resources = wm831x_ldo11_resources,
},
{
.name = "wm831x-on",
.num_resources = ARRAY_SIZE(wm831x_on_resources),
.resources = wm831x_on_resources,
},
{
.name = "wm831x-power",
.num_resources = ARRAY_SIZE(wm831x_power_resources),
.resources = wm831x_power_resources,
},
{
.name = "wm831x-status",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_status1_resources),
.resources = wm831x_status1_resources,
},
{
.name = "wm831x-status",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_status2_resources),
.resources = wm831x_status2_resources,
},
{
.name = "wm831x-watchdog",
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
.resources = wm831x_wdt_resources,
},
};
static const struct mfd_cell wm8320_devs[] = {
{
.name = "wm831x-backup",
},
{
.name = "wm831x-buckv",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
.resources = wm831x_dcdc1_resources,
},
{
.name = "wm831x-buckv",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
.resources = wm831x_dcdc2_resources,
},
{
.name = "wm831x-buckp",
.id = 3,
.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
.resources = wm831x_dcdc3_resources,
},
{
.name = "wm831x-buckp",
.id = 4,
.num_resources = ARRAY_SIZE(wm8320_dcdc4_buck_resources),
.resources = wm8320_dcdc4_buck_resources,
},
{
.name = "wm831x-clk",
},
{
.name = "wm831x-gpio",
.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
.resources = wm831x_gpio_resources,
},
{
.name = "wm831x-hwmon",
},
{
.name = "wm831x-ldo",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
.resources = wm831x_ldo1_resources,
},
{
.name = "wm831x-ldo",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
.resources = wm831x_ldo2_resources,
},
{
.name = "wm831x-ldo",
.id = 3,
.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
.resources = wm831x_ldo3_resources,
},
{
.name = "wm831x-ldo",
.id = 4,
.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
.resources = wm831x_ldo4_resources,
},
{
.name = "wm831x-ldo",
.id = 5,
.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
.resources = wm831x_ldo5_resources,
},
{
.name = "wm831x-ldo",
.id = 6,
.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
.resources = wm831x_ldo6_resources,
},
{
.name = "wm831x-aldo",
.id = 7,
.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
.resources = wm831x_ldo7_resources,
},
{
.name = "wm831x-aldo",
.id = 8,
.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
.resources = wm831x_ldo8_resources,
},
{
.name = "wm831x-aldo",
.id = 9,
.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
.resources = wm831x_ldo9_resources,
},
{
.name = "wm831x-aldo",
.id = 10,
.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
.resources = wm831x_ldo10_resources,
},
{
.name = "wm831x-alive-ldo",
.id = 11,
.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
.resources = wm831x_ldo11_resources,
},
{
.name = "wm831x-on",
.num_resources = ARRAY_SIZE(wm831x_on_resources),
.resources = wm831x_on_resources,
},
{
.name = "wm831x-status",
.id = 1,
.num_resources = ARRAY_SIZE(wm831x_status1_resources),
.resources = wm831x_status1_resources,
},
{
.name = "wm831x-status",
.id = 2,
.num_resources = ARRAY_SIZE(wm831x_status2_resources),
.resources = wm831x_status2_resources,
},
{
.name = "wm831x-watchdog",
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
.resources = wm831x_wdt_resources,
},
};
static const struct mfd_cell touch_devs[] = {
{
.name = "wm831x-touch",
.num_resources = ARRAY_SIZE(wm831x_touch_resources),
.resources = wm831x_touch_resources,
},
};
static const struct mfd_cell rtc_devs[] = {
{
.name = "wm831x-rtc",
.num_resources = ARRAY_SIZE(wm831x_rtc_resources),
.resources = wm831x_rtc_resources,
},
};
static const struct mfd_cell backlight_devs[] = {
{
.name = "wm831x-backlight",
},
};
struct regmap_config wm831x_regmap_config = {
.reg_bits = 16,
.val_bits = 16,
.cache_type = REGCACHE_MAPLE,
.max_register = WM831X_DBE_CHECK_DATA,
.readable_reg = wm831x_reg_readable,
.writeable_reg = wm831x_reg_writeable,
.volatile_reg = wm831x_reg_volatile,
};
EXPORT_SYMBOL_GPL(wm831x_regmap_config);
const struct of_device_id wm831x_of_match[] = {
{ .compatible = "wlf,wm8310", .data = (void *)WM8310 },
{ .compatible = "wlf,wm8311", .data = (void *)WM8311 },
{ .compatible = "wlf,wm8312", .data = (void *)WM8312 },
{ .compatible = "wlf,wm8320", .data = (void *)WM8320 },
{ .compatible = "wlf,wm8321", .data = (void *)WM8321 },
{ .compatible = "wlf,wm8325", .data = (void *)WM8325 },
{ .compatible = "wlf,wm8326", .data = (void *)WM8326 },
{ },
};
EXPORT_SYMBOL_GPL(wm831x_of_match);
/*
* Instantiate the generic non-control parts of the device.
*/
int wm831x_device_init(struct wm831x *wm831x, int irq)
{
struct wm831x_pdata *pdata = &wm831x->pdata;
int rev, wm831x_num;
enum wm831x_parent parent;
int ret, i;
mutex_init(&wm831x->io_lock);
mutex_init(&wm831x->key_lock);
dev_set_drvdata(wm831x->dev, wm831x);
wm831x->soft_shutdown = pdata->soft_shutdown;
ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
goto err;
}
switch (ret) {
case 0x6204:
case 0x6246:
break;
default:
dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
ret = -EINVAL;
goto err;
}
ret = wm831x_reg_read(wm831x, WM831X_REVISION);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
goto err;
}
rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
goto err;
}
/* Some engineering samples do not have the ID set, rely on
* the device being registered correctly.
*/
if (ret == 0) {
dev_info(wm831x->dev, "Device is an engineering sample\n");
ret = wm831x->type;
}
switch (ret) {
case WM8310:
parent = WM8310;
wm831x->num_gpio = 16;
wm831x->charger_irq_wake = 1;
if (rev > 0) {
wm831x->has_gpio_ena = 1;
wm831x->has_cs_sts = 1;
}
dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
break;
case WM8311:
parent = WM8311;
wm831x->num_gpio = 16;
wm831x->charger_irq_wake = 1;
if (rev > 0) {
wm831x->has_gpio_ena = 1;
wm831x->has_cs_sts = 1;
}
dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
break;
case WM8312:
parent = WM8312;
wm831x->num_gpio = 16;
wm831x->charger_irq_wake = 1;
if (rev > 0) {
wm831x->has_gpio_ena = 1;
wm831x->has_cs_sts = 1;
}
dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
break;
case WM8320:
parent = WM8320;
wm831x->num_gpio = 12;
dev_info(wm831x->dev, "WM8320 revision %c\n", 'A' + rev);
break;
case WM8321:
parent = WM8321;
wm831x->num_gpio = 12;
dev_info(wm831x->dev, "WM8321 revision %c\n", 'A' + rev);
break;
case WM8325:
parent = WM8325;
wm831x->num_gpio = 12;
dev_info(wm831x->dev, "WM8325 revision %c\n", 'A' + rev);
break;
case WM8326:
parent = WM8326;
wm831x->num_gpio = 12;
dev_info(wm831x->dev, "WM8326 revision %c\n", 'A' + rev);
break;
default:
dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
ret = -EINVAL;
goto err;
}
/* This will need revisiting in future but is OK for all
* current parts.
*/
if (parent != wm831x->type)
dev_warn(wm831x->dev, "Device was registered as a WM%x\n",
wm831x->type);
/* Bootstrap the user key */
ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
goto err;
}
if (ret != 0) {
dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
ret);
wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
}
wm831x->locked = 1;
if (pdata->pre_init) {
ret = pdata->pre_init(wm831x);
if (ret != 0) {
dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
goto err;
}
}
for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
if (!pdata->gpio_defaults[i])
continue;
wm831x_reg_write(wm831x,
WM831X_GPIO1_CONTROL + i,
pdata->gpio_defaults[i] & 0xffff);
}
/* Multiply by 10 as we have many subdevices of the same type */
if (pdata->wm831x_num)
wm831x_num = pdata->wm831x_num * 10;
else
wm831x_num = -1;
ret = wm831x_irq_init(wm831x, irq);
if (ret != 0)
goto err;
wm831x_auxadc_init(wm831x);
/* The core device is up, instantiate the subdevices. */
switch (parent) {
case WM8310:
ret = mfd_add_devices(wm831x->dev, wm831x_num,
wm8310_devs, ARRAY_SIZE(wm8310_devs),
NULL, 0, NULL);
break;
case WM8311:
ret = mfd_add_devices(wm831x->dev, wm831x_num,
wm8311_devs, ARRAY_SIZE(wm8311_devs),
NULL, 0, NULL);
if (!pdata->disable_touch)
mfd_add_devices(wm831x->dev, wm831x_num,
touch_devs, ARRAY_SIZE(touch_devs),
NULL, 0, NULL);
break;
case WM8312:
ret = mfd_add_devices(wm831x->dev, wm831x_num,
wm8312_devs, ARRAY_SIZE(wm8312_devs),
NULL, 0, NULL);
if (!pdata->disable_touch)
mfd_add_devices(wm831x->dev, wm831x_num,
touch_devs, ARRAY_SIZE(touch_devs),
NULL, 0, NULL);
break;
case WM8320:
case WM8321:
case WM8325:
case WM8326:
ret = mfd_add_devices(wm831x->dev, wm831x_num,
wm8320_devs, ARRAY_SIZE(wm8320_devs),
NULL, 0, NULL);
break;
default:
/* If this happens the bus probe function is buggy */
BUG();
}
if (ret != 0) {
dev_err(wm831x->dev, "Failed to add children\n");
goto err_irq;
}
/* The RTC can only be used if the 32.768kHz crystal is
* enabled; this can't be controlled by software at runtime.
*/
ret = wm831x_reg_read(wm831x, WM831X_CLOCK_CONTROL_2);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read clock status: %d\n", ret);
goto err_irq;
}
if (ret & WM831X_XTAL_ENA) {
ret = mfd_add_devices(wm831x->dev, wm831x_num,
rtc_devs, ARRAY_SIZE(rtc_devs),
NULL, 0, NULL);
if (ret != 0) {
dev_err(wm831x->dev, "Failed to add RTC: %d\n", ret);
goto err_irq;
}
} else {
dev_info(wm831x->dev, "32.768kHz clock disabled, no RTC\n");
}
if (pdata->backlight) {
/* Treat errors as non-critical */
ret = mfd_add_devices(wm831x->dev, wm831x_num, backlight_devs,
ARRAY_SIZE(backlight_devs), NULL,
0, NULL);
if (ret < 0)
dev_err(wm831x->dev, "Failed to add backlight: %d\n",
ret);
}
wm831x_otp_init(wm831x);
if (pdata->post_init) {
ret = pdata->post_init(wm831x);
if (ret != 0) {
dev_err(wm831x->dev, "post_init() failed: %d\n", ret);
goto err_irq;
}
}
return 0;
err_irq:
wm831x_irq_exit(wm831x);
err:
mfd_remove_devices(wm831x->dev);
return ret;
}
int wm831x_device_suspend(struct wm831x *wm831x)
{
int reg, mask;
/* If the charger IRQs are a wake source then make sure we ack
* them even if they're not actively being used (eg, no power
* driver or no IRQ line wired up) then acknowledge the
* interrupts otherwise suspend won't last very long.
*/
if (wm831x->charger_irq_wake) {
reg = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_2_MASK);
mask = WM831X_CHG_BATT_HOT_EINT |
WM831X_CHG_BATT_COLD_EINT |
WM831X_CHG_BATT_FAIL_EINT |
WM831X_CHG_OV_EINT | WM831X_CHG_END_EINT |
WM831X_CHG_TO_EINT | WM831X_CHG_MODE_EINT |
WM831X_CHG_START_EINT;
/* If any of the interrupts are masked read the statuses */
if (reg & mask)
reg = wm831x_reg_read(wm831x,
WM831X_INTERRUPT_STATUS_2);
if (reg & mask) {
dev_info(wm831x->dev,
"Acknowledging masked charger IRQs: %x\n",
reg & mask);
wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_2,
reg & mask);
}
}
return 0;
}
void wm831x_device_shutdown(struct wm831x *wm831x)
{
if (wm831x->soft_shutdown) {
dev_info(wm831x->dev, "Initiating shutdown...\n");
wm831x_set_bits(wm831x, WM831X_POWER_STATE, WM831X_CHIP_ON, 0);
}
}
EXPORT_SYMBOL_GPL(wm831x_device_shutdown);
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