258 строки
6.2 KiB
C
258 строки
6.2 KiB
C
/*
|
|
* da9063-core.c: Device access for Dialog DA9063 modules
|
|
*
|
|
* Copyright 2012 Dialog Semiconductors Ltd.
|
|
* Copyright 2013 Philipp Zabel, Pengutronix
|
|
*
|
|
* Author: Krystian Garbaciak, Dialog Semiconductor
|
|
* Author: Michal Hajduk, Dialog Semiconductor
|
|
*
|
|
* 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/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/device.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/regmap.h>
|
|
|
|
#include <linux/mfd/da9063/core.h>
|
|
#include <linux/mfd/da9063/pdata.h>
|
|
#include <linux/mfd/da9063/registers.h>
|
|
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/kthread.h>
|
|
#include <linux/uaccess.h>
|
|
|
|
|
|
static struct resource da9063_regulators_resources[] = {
|
|
{
|
|
.name = "LDO_LIM",
|
|
.start = DA9063_IRQ_LDO_LIM,
|
|
.end = DA9063_IRQ_LDO_LIM,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct resource da9063_rtc_resources[] = {
|
|
{
|
|
.name = "ALARM",
|
|
.start = DA9063_IRQ_ALARM,
|
|
.end = DA9063_IRQ_ALARM,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
.name = "TICK",
|
|
.start = DA9063_IRQ_TICK,
|
|
.end = DA9063_IRQ_TICK,
|
|
.flags = IORESOURCE_IRQ,
|
|
}
|
|
};
|
|
|
|
static struct resource da9063_onkey_resources[] = {
|
|
{
|
|
.name = "ONKEY",
|
|
.start = DA9063_IRQ_ONKEY,
|
|
.end = DA9063_IRQ_ONKEY,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct resource da9063_hwmon_resources[] = {
|
|
{
|
|
.start = DA9063_IRQ_ADC_RDY,
|
|
.end = DA9063_IRQ_ADC_RDY,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
|
|
static const struct mfd_cell da9063_common_devs[] = {
|
|
{
|
|
.name = DA9063_DRVNAME_REGULATORS,
|
|
.num_resources = ARRAY_SIZE(da9063_regulators_resources),
|
|
.resources = da9063_regulators_resources,
|
|
},
|
|
{
|
|
.name = DA9063_DRVNAME_LEDS,
|
|
},
|
|
{
|
|
.name = DA9063_DRVNAME_WATCHDOG,
|
|
.of_compatible = "dlg,da9063-watchdog",
|
|
},
|
|
{
|
|
.name = DA9063_DRVNAME_HWMON,
|
|
.num_resources = ARRAY_SIZE(da9063_hwmon_resources),
|
|
.resources = da9063_hwmon_resources,
|
|
},
|
|
{
|
|
.name = DA9063_DRVNAME_ONKEY,
|
|
.num_resources = ARRAY_SIZE(da9063_onkey_resources),
|
|
.resources = da9063_onkey_resources,
|
|
.of_compatible = "dlg,da9063-onkey",
|
|
},
|
|
{
|
|
.name = DA9063_DRVNAME_VIBRATION,
|
|
},
|
|
};
|
|
|
|
/* Only present on DA9063 , not on DA9063L */
|
|
static const struct mfd_cell da9063_devs[] = {
|
|
{
|
|
.name = DA9063_DRVNAME_RTC,
|
|
.num_resources = ARRAY_SIZE(da9063_rtc_resources),
|
|
.resources = da9063_rtc_resources,
|
|
.of_compatible = "dlg,da9063-rtc",
|
|
},
|
|
};
|
|
|
|
static int da9063_clear_fault_log(struct da9063 *da9063)
|
|
{
|
|
int ret = 0;
|
|
int fault_log = 0;
|
|
|
|
ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log);
|
|
if (ret < 0) {
|
|
dev_err(da9063->dev, "Cannot read FAULT_LOG.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
if (fault_log) {
|
|
if (fault_log & DA9063_TWD_ERROR)
|
|
dev_dbg(da9063->dev,
|
|
"Fault log entry detected: DA9063_TWD_ERROR\n");
|
|
if (fault_log & DA9063_POR)
|
|
dev_dbg(da9063->dev,
|
|
"Fault log entry detected: DA9063_POR\n");
|
|
if (fault_log & DA9063_VDD_FAULT)
|
|
dev_dbg(da9063->dev,
|
|
"Fault log entry detected: DA9063_VDD_FAULT\n");
|
|
if (fault_log & DA9063_VDD_START)
|
|
dev_dbg(da9063->dev,
|
|
"Fault log entry detected: DA9063_VDD_START\n");
|
|
if (fault_log & DA9063_TEMP_CRIT)
|
|
dev_dbg(da9063->dev,
|
|
"Fault log entry detected: DA9063_TEMP_CRIT\n");
|
|
if (fault_log & DA9063_KEY_RESET)
|
|
dev_dbg(da9063->dev,
|
|
"Fault log entry detected: DA9063_KEY_RESET\n");
|
|
if (fault_log & DA9063_NSHUTDOWN)
|
|
dev_dbg(da9063->dev,
|
|
"Fault log entry detected: DA9063_NSHUTDOWN\n");
|
|
if (fault_log & DA9063_WAIT_SHUT)
|
|
dev_dbg(da9063->dev,
|
|
"Fault log entry detected: DA9063_WAIT_SHUT\n");
|
|
}
|
|
|
|
ret = regmap_write(da9063->regmap,
|
|
DA9063_REG_FAULT_LOG,
|
|
fault_log);
|
|
if (ret < 0)
|
|
dev_err(da9063->dev,
|
|
"Cannot reset FAULT_LOG values %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int da9063_device_init(struct da9063 *da9063, unsigned int irq)
|
|
{
|
|
struct da9063_pdata *pdata = da9063->dev->platform_data;
|
|
int model, variant_id, variant_code;
|
|
int ret;
|
|
|
|
ret = da9063_clear_fault_log(da9063);
|
|
if (ret < 0)
|
|
dev_err(da9063->dev, "Cannot clear fault log\n");
|
|
|
|
if (pdata) {
|
|
da9063->flags = pdata->flags;
|
|
da9063->irq_base = pdata->irq_base;
|
|
} else {
|
|
da9063->flags = 0;
|
|
da9063->irq_base = -1;
|
|
}
|
|
da9063->chip_irq = irq;
|
|
|
|
if (pdata && pdata->init != NULL) {
|
|
ret = pdata->init(da9063);
|
|
if (ret != 0) {
|
|
dev_err(da9063->dev,
|
|
"Platform initialization failed.\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_ID, &model);
|
|
if (ret < 0) {
|
|
dev_err(da9063->dev, "Cannot read chip model id.\n");
|
|
return -EIO;
|
|
}
|
|
if (model != PMIC_CHIP_ID_DA9063) {
|
|
dev_err(da9063->dev, "Invalid chip model id: 0x%02x\n", model);
|
|
return -ENODEV;
|
|
}
|
|
|
|
ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &variant_id);
|
|
if (ret < 0) {
|
|
dev_err(da9063->dev, "Cannot read chip variant id.\n");
|
|
return -EIO;
|
|
}
|
|
|
|
variant_code = variant_id >> DA9063_CHIP_VARIANT_SHIFT;
|
|
|
|
dev_info(da9063->dev,
|
|
"Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n",
|
|
model, variant_id);
|
|
|
|
if (variant_code < PMIC_DA9063_BB && variant_code != PMIC_DA9063_AD) {
|
|
dev_err(da9063->dev,
|
|
"Cannot support variant code: 0x%02X\n", variant_code);
|
|
return -ENODEV;
|
|
}
|
|
|
|
da9063->variant_code = variant_code;
|
|
|
|
ret = da9063_irq_init(da9063);
|
|
if (ret) {
|
|
dev_err(da9063->dev, "Cannot initialize interrupts.\n");
|
|
return ret;
|
|
}
|
|
|
|
da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq);
|
|
|
|
ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE,
|
|
da9063_common_devs,
|
|
ARRAY_SIZE(da9063_common_devs),
|
|
NULL, da9063->irq_base, NULL);
|
|
if (ret) {
|
|
dev_err(da9063->dev, "Failed to add child devices\n");
|
|
return ret;
|
|
}
|
|
|
|
if (da9063->type == PMIC_TYPE_DA9063) {
|
|
ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE,
|
|
da9063_devs, ARRAY_SIZE(da9063_devs),
|
|
NULL, da9063->irq_base, NULL);
|
|
if (ret) {
|
|
dev_err(da9063->dev, "Failed to add child devices\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
MODULE_DESCRIPTION("PMIC driver for Dialog DA9063");
|
|
MODULE_AUTHOR("Krystian Garbaciak");
|
|
MODULE_AUTHOR("Michal Hajduk");
|
|
MODULE_LICENSE("GPL");
|