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linux_dsm_epyc7002/drivers/mfd/wm831x-core.c
Mark Brown 0b14c22ea1 mfd: Provide platform data for WM831x GPIO configuration 
Allow the GPIO mode of WM831x devices to be configured using platform data.
Users may provide a table of GPIO register values in gpio_defaults[]. In
order to allow 0 to be set explicitly out of range values are accepted and
masked off, with a WM831X_GPIO_CONFIGURE define provided to set an out of
range value.

This can be used to configure higher numbered GPIOs or override values set
in OTP for GPIOs configured using OTP.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-05-26 19:45:18 +02:00

1727 lines
36 KiB
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/*
* wm831x-core.c -- Device access for Wolfson WM831x PMICs
*
* Copyright 2009 Wolfson Microelectronics PLC.
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/bcd.h>
#include <linux/delay.h>
#include <linux/mfd/core.h>
#include <linux/slab.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/regulator.h>
/* Current settings - values are 2*2^(reg_val/4) microamps. These are
* exported since they are used by multiple drivers.
*/
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_unlock: 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.
*/
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.
*/
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 int wm831x_read(struct wm831x *wm831x, unsigned short reg,
int bytes, void *dest)
{
int ret, i;
u16 *buf = dest;
BUG_ON(bytes % 2);
BUG_ON(bytes <= 0);
ret = wm831x->read_dev(wm831x, reg, bytes, dest);
if (ret < 0)
return ret;
for (i = 0; i < bytes / 2; i++) {
buf[i] = be16_to_cpu(buf[i]);
dev_vdbg(wm831x->dev, "Read %04x from R%d(0x%x)\n",
buf[i], reg + i, reg + i);
}
return 0;
}
/**
* 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 short val;
int ret;
mutex_lock(&wm831x->io_lock);
ret = wm831x_read(wm831x, reg, 2, &val);
mutex_unlock(&wm831x->io_lock);
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)
{
int ret;
mutex_lock(&wm831x->io_lock);
ret = wm831x_read(wm831x, reg, count * 2, buf);
mutex_unlock(&wm831x->io_lock);
return ret;
}
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;
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);
buf[i] = cpu_to_be16(buf[i]);
}
return wm831x->write_dev(wm831x, reg, bytes, src);
}
/**
* 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;
u16 r;
mutex_lock(&wm831x->io_lock);
ret = wm831x_read(wm831x, reg, 2, &r);
if (ret < 0)
goto out;
r &= ~mask;
r |= val;
ret = wm831x_write(wm831x, reg, 2, &r);
out:
mutex_unlock(&wm831x->io_lock);
return ret;
}
EXPORT_SYMBOL_GPL(wm831x_set_bits);
/**
* wm831x_auxadc_read: Read a value from the WM831x AUXADC
*
* @wm831x: Device to read from.
* @input: AUXADC input to read.
*/
int wm831x_auxadc_read(struct wm831x *wm831x, enum wm831x_auxadc input)
{
int ret, src, irq_masked, timeout;
/* Are we using the interrupt? */
irq_masked = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_1_MASK);
irq_masked &= WM831X_AUXADC_DATA_EINT;
mutex_lock(&wm831x->auxadc_lock);
ret = wm831x_set_bits(wm831x, WM831X_AUXADC_CONTROL,
WM831X_AUX_ENA, WM831X_AUX_ENA);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to enable AUXADC: %d\n", ret);
goto out;
}
/* We force a single source at present */
src = input;
ret = wm831x_reg_write(wm831x, WM831X_AUXADC_SOURCE,
1 << src);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to set AUXADC source: %d\n", ret);
goto out;
}
/* Clear any notification from a very late arriving interrupt */
try_wait_for_completion(&wm831x->auxadc_done);
ret = wm831x_set_bits(wm831x, WM831X_AUXADC_CONTROL,
WM831X_AUX_CVT_ENA, WM831X_AUX_CVT_ENA);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to start AUXADC: %d\n", ret);
goto disable;
}
if (irq_masked) {
/* If we're not using interrupts then poll the
* interrupt status register */
timeout = 5;
while (timeout) {
msleep(1);
ret = wm831x_reg_read(wm831x,
WM831X_INTERRUPT_STATUS_1);
if (ret < 0) {
dev_err(wm831x->dev,
"ISR 1 read failed: %d\n", ret);
goto disable;
}
/* Did it complete? */
if (ret & WM831X_AUXADC_DATA_EINT) {
wm831x_reg_write(wm831x,
WM831X_INTERRUPT_STATUS_1,
WM831X_AUXADC_DATA_EINT);
break;
} else {
dev_err(wm831x->dev,
"AUXADC conversion timeout\n");
ret = -EBUSY;
goto disable;
}
}
} else {
/* If we are using interrupts then wait for the
* interrupt to complete. Use an extremely long
* timeout to handle situations with heavy load where
* the notification of the interrupt may be delayed by
* threaded IRQ handling. */
if (!wait_for_completion_timeout(&wm831x->auxadc_done,
msecs_to_jiffies(500))) {
dev_err(wm831x->dev, "Timed out waiting for AUXADC\n");
ret = -EBUSY;
goto disable;
}
}
ret = wm831x_reg_read(wm831x, WM831X_AUXADC_DATA);
if (ret < 0) {
dev_err(wm831x->dev, "Failed to read AUXADC data: %d\n", ret);
} else {
src = ((ret & WM831X_AUX_DATA_SRC_MASK)
>> WM831X_AUX_DATA_SRC_SHIFT) - 1;
if (src == 14)
src = WM831X_AUX_CAL;
if (src != input) {
dev_err(wm831x->dev, "Data from source %d not %d\n",
src, input);
ret = -EINVAL;
} else {
ret &= WM831X_AUX_DATA_MASK;
}
}
disable:
wm831x_set_bits(wm831x, WM831X_AUXADC_CONTROL, WM831X_AUX_ENA, 0);
out:
mutex_unlock(&wm831x->auxadc_lock);
return ret;
}
EXPORT_SYMBOL_GPL(wm831x_auxadc_read);
static irqreturn_t wm831x_auxadc_irq(int irq, void *irq_data)
{
struct wm831x *wm831x = irq_data;
complete(&wm831x->auxadc_done);
return IRQ_HANDLED;
}
/**
* wm831x_auxadc_read_uv: Read a voltage from the WM831x AUXADC
*
* @wm831x: Device to read from.
* @input: AUXADC input to read.
*/
int wm831x_auxadc_read_uv(struct wm831x *wm831x, enum wm831x_auxadc input)
{
int ret;
ret = wm831x_auxadc_read(wm831x, input);
if (ret < 0)
return ret;
ret *= 1465;
return ret;
}
EXPORT_SYMBOL_GPL(wm831x_auxadc_read_uv);
static struct resource wm831x_dcdc1_resources[] = {
{
.start = WM831X_DC1_CONTROL_1,
.end = WM831X_DC1_DVS_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_DC1,
.end = WM831X_IRQ_UV_DC1,
.flags = IORESOURCE_IRQ,
},
{
.name = "HC",
.start = WM831X_IRQ_HC_DC1,
.end = WM831X_IRQ_HC_DC1,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_dcdc2_resources[] = {
{
.start = WM831X_DC2_CONTROL_1,
.end = WM831X_DC2_DVS_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_DC2,
.end = WM831X_IRQ_UV_DC2,
.flags = IORESOURCE_IRQ,
},
{
.name = "HC",
.start = WM831X_IRQ_HC_DC2,
.end = WM831X_IRQ_HC_DC2,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_dcdc3_resources[] = {
{
.start = WM831X_DC3_CONTROL_1,
.end = WM831X_DC3_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_DC3,
.end = WM831X_IRQ_UV_DC3,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_dcdc4_resources[] = {
{
.start = WM831X_DC4_CONTROL,
.end = WM831X_DC4_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_DC4,
.end = WM831X_IRQ_UV_DC4,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm8320_dcdc4_buck_resources[] = {
{
.start = WM831X_DC4_CONTROL,
.end = WM832X_DC4_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_DC4,
.end = WM831X_IRQ_UV_DC4,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_gpio_resources[] = {
{
.start = WM831X_IRQ_GPIO_1,
.end = WM831X_IRQ_GPIO_16,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_isink1_resources[] = {
{
.start = WM831X_CURRENT_SINK_1,
.end = WM831X_CURRENT_SINK_1,
.flags = IORESOURCE_IO,
},
{
.start = WM831X_IRQ_CS1,
.end = WM831X_IRQ_CS1,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_isink2_resources[] = {
{
.start = WM831X_CURRENT_SINK_2,
.end = WM831X_CURRENT_SINK_2,
.flags = IORESOURCE_IO,
},
{
.start = WM831X_IRQ_CS2,
.end = WM831X_IRQ_CS2,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo1_resources[] = {
{
.start = WM831X_LDO1_CONTROL,
.end = WM831X_LDO1_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_LDO1,
.end = WM831X_IRQ_UV_LDO1,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo2_resources[] = {
{
.start = WM831X_LDO2_CONTROL,
.end = WM831X_LDO2_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_LDO2,
.end = WM831X_IRQ_UV_LDO2,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo3_resources[] = {
{
.start = WM831X_LDO3_CONTROL,
.end = WM831X_LDO3_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_LDO3,
.end = WM831X_IRQ_UV_LDO3,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo4_resources[] = {
{
.start = WM831X_LDO4_CONTROL,
.end = WM831X_LDO4_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_LDO4,
.end = WM831X_IRQ_UV_LDO4,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo5_resources[] = {
{
.start = WM831X_LDO5_CONTROL,
.end = WM831X_LDO5_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_LDO5,
.end = WM831X_IRQ_UV_LDO5,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo6_resources[] = {
{
.start = WM831X_LDO6_CONTROL,
.end = WM831X_LDO6_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_LDO6,
.end = WM831X_IRQ_UV_LDO6,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo7_resources[] = {
{
.start = WM831X_LDO7_CONTROL,
.end = WM831X_LDO7_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_LDO7,
.end = WM831X_IRQ_UV_LDO7,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo8_resources[] = {
{
.start = WM831X_LDO8_CONTROL,
.end = WM831X_LDO8_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_LDO8,
.end = WM831X_IRQ_UV_LDO8,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo9_resources[] = {
{
.start = WM831X_LDO9_CONTROL,
.end = WM831X_LDO9_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_LDO9,
.end = WM831X_IRQ_UV_LDO9,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo10_resources[] = {
{
.start = WM831X_LDO10_CONTROL,
.end = WM831X_LDO10_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
{
.name = "UV",
.start = WM831X_IRQ_UV_LDO10,
.end = WM831X_IRQ_UV_LDO10,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_ldo11_resources[] = {
{
.start = WM831X_LDO11_ON_CONTROL,
.end = WM831X_LDO11_SLEEP_CONTROL,
.flags = IORESOURCE_IO,
},
};
static struct resource wm831x_on_resources[] = {
{
.start = WM831X_IRQ_ON,
.end = WM831X_IRQ_ON,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_power_resources[] = {
{
.name = "SYSLO",
.start = WM831X_IRQ_PPM_SYSLO,
.end = WM831X_IRQ_PPM_SYSLO,
.flags = IORESOURCE_IRQ,
},
{
.name = "PWR SRC",
.start = WM831X_IRQ_PPM_PWR_SRC,
.end = WM831X_IRQ_PPM_PWR_SRC,
.flags = IORESOURCE_IRQ,
},
{
.name = "USB CURR",
.start = WM831X_IRQ_PPM_USB_CURR,
.end = WM831X_IRQ_PPM_USB_CURR,
.flags = IORESOURCE_IRQ,
},
{
.name = "BATT HOT",
.start = WM831X_IRQ_CHG_BATT_HOT,
.end = WM831X_IRQ_CHG_BATT_HOT,
.flags = IORESOURCE_IRQ,
},
{
.name = "BATT COLD",
.start = WM831X_IRQ_CHG_BATT_COLD,
.end = WM831X_IRQ_CHG_BATT_COLD,
.flags = IORESOURCE_IRQ,
},
{
.name = "BATT FAIL",
.start = WM831X_IRQ_CHG_BATT_FAIL,
.end = WM831X_IRQ_CHG_BATT_FAIL,
.flags = IORESOURCE_IRQ,
},
{
.name = "OV",
.start = WM831X_IRQ_CHG_OV,
.end = WM831X_IRQ_CHG_OV,
.flags = IORESOURCE_IRQ,
},
{
.name = "END",
.start = WM831X_IRQ_CHG_END,
.end = WM831X_IRQ_CHG_END,
.flags = IORESOURCE_IRQ,
},
{
.name = "TO",
.start = WM831X_IRQ_CHG_TO,
.end = WM831X_IRQ_CHG_TO,
.flags = IORESOURCE_IRQ,
},
{
.name = "MODE",
.start = WM831X_IRQ_CHG_MODE,
.end = WM831X_IRQ_CHG_MODE,
.flags = IORESOURCE_IRQ,
},
{
.name = "START",
.start = WM831X_IRQ_CHG_START,
.end = WM831X_IRQ_CHG_START,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_rtc_resources[] = {
{
.name = "PER",
.start = WM831X_IRQ_RTC_PER,
.end = WM831X_IRQ_RTC_PER,
.flags = IORESOURCE_IRQ,
},
{
.name = "ALM",
.start = WM831X_IRQ_RTC_ALM,
.end = WM831X_IRQ_RTC_ALM,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_status1_resources[] = {
{
.start = WM831X_STATUS_LED_1,
.end = WM831X_STATUS_LED_1,
.flags = IORESOURCE_IO,
},
};
static struct resource wm831x_status2_resources[] = {
{
.start = WM831X_STATUS_LED_2,
.end = WM831X_STATUS_LED_2,
.flags = IORESOURCE_IO,
},
};
static struct resource wm831x_touch_resources[] = {
{
.name = "TCHPD",
.start = WM831X_IRQ_TCHPD,
.end = WM831X_IRQ_TCHPD,
.flags = IORESOURCE_IRQ,
},
{
.name = "TCHDATA",
.start = WM831X_IRQ_TCHDATA,
.end = WM831X_IRQ_TCHDATA,
.flags = IORESOURCE_IRQ,
},
};
static struct resource wm831x_wdt_resources[] = {
{
.start = WM831X_IRQ_WDOG_TO,
.end = WM831X_IRQ_WDOG_TO,
.flags = IORESOURCE_IRQ,
},
};
static 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-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-rtc",
.num_resources = ARRAY_SIZE(wm831x_rtc_resources),
.resources = wm831x_rtc_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 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-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-rtc",
.num_resources = ARRAY_SIZE(wm831x_rtc_resources),
.resources = wm831x_rtc_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-touch",
.num_resources = ARRAY_SIZE(wm831x_touch_resources),
.resources = wm831x_touch_resources,
},
{
.name = "wm831x-watchdog",
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
.resources = wm831x_wdt_resources,
},
};
static 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-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-rtc",
.num_resources = ARRAY_SIZE(wm831x_rtc_resources),
.resources = wm831x_rtc_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-touch",
.num_resources = ARRAY_SIZE(wm831x_touch_resources),
.resources = wm831x_touch_resources,
},
{
.name = "wm831x-watchdog",
.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
.resources = wm831x_wdt_resources,
},
};
static 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-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-rtc",
.num_resources = ARRAY_SIZE(wm831x_rtc_resources),
.resources = wm831x_rtc_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 struct mfd_cell backlight_devs[] = {
{
.name = "wm831x-backlight",
},
};
/*
* Instantiate the generic non-control parts of the device.
*/
int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
{
struct wm831x_pdata *pdata = wm831x->dev->platform_data;
int rev;
enum wm831x_parent parent;
int ret, i;
mutex_init(&wm831x->io_lock);
mutex_init(&wm831x->key_lock);
mutex_init(&wm831x->auxadc_lock);
init_completion(&wm831x->auxadc_done);
dev_set_drvdata(wm831x->dev, wm831x);
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 = id;
}
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 != id)
dev_warn(wm831x->dev, "Device was registered as a WM%lx\n",
id);
/* 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 && pdata->pre_init) {
ret = pdata->pre_init(wm831x);
if (ret != 0) {
dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
goto err;
}
}
if (pdata) {
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);
}
}
ret = wm831x_irq_init(wm831x, irq);
if (ret != 0)
goto err;
if (wm831x->irq_base) {
ret = request_threaded_irq(wm831x->irq_base +
WM831X_IRQ_AUXADC_DATA,
NULL, wm831x_auxadc_irq, 0,
"auxadc", wm831x);
if (ret < 0)
dev_err(wm831x->dev, "AUXADC IRQ request failed: %d\n",
ret);
}
/* The core device is up, instantiate the subdevices. */
switch (parent) {
case WM8310:
ret = mfd_add_devices(wm831x->dev, -1,
wm8310_devs, ARRAY_SIZE(wm8310_devs),
NULL, wm831x->irq_base);
break;
case WM8311:
ret = mfd_add_devices(wm831x->dev, -1,
wm8311_devs, ARRAY_SIZE(wm8311_devs),
NULL, wm831x->irq_base);
break;
case WM8312:
ret = mfd_add_devices(wm831x->dev, -1,
wm8312_devs, ARRAY_SIZE(wm8312_devs),
NULL, wm831x->irq_base);
break;
case WM8320:
case WM8321:
case WM8325:
case WM8326:
ret = mfd_add_devices(wm831x->dev, -1,
wm8320_devs, ARRAY_SIZE(wm8320_devs),
NULL, wm831x->irq_base);
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;
}
if (pdata && pdata->backlight) {
/* Treat errors as non-critical */
ret = mfd_add_devices(wm831x->dev, -1, backlight_devs,
ARRAY_SIZE(backlight_devs), NULL,
wm831x->irq_base);
if (ret < 0)
dev_err(wm831x->dev, "Failed to add backlight: %d\n",
ret);
}
wm831x_otp_init(wm831x);
if (pdata && 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);
kfree(wm831x);
return ret;
}
void wm831x_device_exit(struct wm831x *wm831x)
{
wm831x_otp_exit(wm831x);
mfd_remove_devices(wm831x->dev);
if (wm831x->irq_base)
free_irq(wm831x->irq_base + WM831X_IRQ_AUXADC_DATA, wm831x);
wm831x_irq_exit(wm831x);
kfree(wm831x);
}
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;
}
MODULE_DESCRIPTION("Core support for the WM831X AudioPlus PMIC");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mark Brown");
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