/* da9063-i2c.c: Interrupt support for Dialog DA9063
*
* Copyright 2012 Dialog Semiconductor Ltd.
* Copyright 2013 Philipp Zabel, Pengutronix
*
* Author: Krystian Garbaciak <krystian.garbaciak@diasemi.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/i2c.h>
#include <linux/regmap.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/mfd/core.h>
#include <linux/mfd/da9063/core.h>
#include <linux/mfd/da9063/pdata.h>
#include <linux/mfd/da9063/registers.h>
static const struct regmap_range da9063_readable_ranges[] = {
{
.range_min = DA9063_REG_PAGE_CON,
.range_max = DA9063_REG_SECOND_D,
}, {
.range_min = DA9063_REG_SEQ,
.range_max = DA9063_REG_ID_32_31,
}, {
.range_min = DA9063_REG_SEQ_A,
.range_max = DA9063_REG_AUTO3_LOW,
}, {
.range_min = DA9063_REG_T_OFFSET,
.range_max = DA9063_REG_GP_ID_19,
}, {
.range_min = DA9063_REG_CHIP_ID,
.range_max = DA9063_REG_CHIP_VARIANT,
},
};
static const struct regmap_range da9063_writeable_ranges[] = {
{
.range_min = DA9063_REG_PAGE_CON,
.range_max = DA9063_REG_PAGE_CON,
}, {
.range_min = DA9063_REG_FAULT_LOG,
.range_max = DA9063_REG_VSYS_MON,
}, {
.range_min = DA9063_REG_COUNT_S,
.range_max = DA9063_REG_ALARM_Y,
}, {
.range_min = DA9063_REG_SEQ,
.range_max = DA9063_REG_ID_32_31,
}, {
.range_min = DA9063_REG_SEQ_A,
.range_max = DA9063_REG_AUTO3_LOW,
}, {
.range_min = DA9063_REG_CONFIG_I,
.range_max = DA9063_REG_MON_REG_4,
}, {
.range_min = DA9063_REG_GP_ID_0,
.range_max = DA9063_REG_GP_ID_19,
},
};
static const struct regmap_range da9063_volatile_ranges[] = {
{
.range_min = DA9063_REG_STATUS_A,
.range_max = DA9063_REG_EVENT_D,
}, {
.range_min = DA9063_REG_CONTROL_F,
.range_max = DA9063_REG_CONTROL_F,
}, {
.range_min = DA9063_REG_ADC_MAN,
.range_max = DA9063_REG_ADC_MAN,
}, {
.range_min = DA9063_REG_ADC_RES_L,
.range_max = DA9063_REG_SECOND_D,
}, {
.range_min = DA9063_REG_MON_REG_5,
.range_max = DA9063_REG_MON_REG_6,
},
};
static const struct regmap_access_table da9063_readable_table = {
.yes_ranges = da9063_readable_ranges,
.n_yes_ranges = ARRAY_SIZE(da9063_readable_ranges),
};
static const struct regmap_access_table da9063_writeable_table = {
.yes_ranges = da9063_writeable_ranges,
.n_yes_ranges = ARRAY_SIZE(da9063_writeable_ranges),
};
static const struct regmap_access_table da9063_volatile_table = {
.yes_ranges = da9063_volatile_ranges,
.n_yes_ranges = ARRAY_SIZE(da9063_volatile_ranges),
};
static const struct regmap_range_cfg da9063_range_cfg[] = {
{
.range_min = DA9063_REG_PAGE_CON,
.range_max = DA9063_REG_CHIP_VARIANT,
.selector_reg = DA9063_REG_PAGE_CON,
.selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
.selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
.window_start = 0,
.window_len = 256,
}
};
static struct regmap_config da9063_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.ranges = da9063_range_cfg,
.num_ranges = ARRAY_SIZE(da9063_range_cfg),
.max_register = DA9063_REG_CHIP_VARIANT,
.cache_type = REGCACHE_RBTREE,
.rd_table = &da9063_readable_table,
.wr_table = &da9063_writeable_table,
.volatile_table = &da9063_volatile_table,
};
static int da9063_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct da9063 *da9063;
int ret;
da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL);
if (da9063 == NULL)
return -ENOMEM;
i2c_set_clientdata(i2c, da9063);
da9063->dev = &i2c->dev;
da9063->chip_irq = i2c->irq;
da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);
if (IS_ERR(da9063->regmap)) {
ret = PTR_ERR(da9063->regmap);
dev_err(da9063->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
return da9063_device_init(da9063, i2c->irq);
}
static int da9063_i2c_remove(struct i2c_client *i2c)
{
struct da9063 *da9063 = i2c_get_clientdata(i2c);
da9063_device_exit(da9063);
return 0;
}
static const struct i2c_device_id da9063_i2c_id[] = {
{"da9063", PMIC_DA9063},
{},
};
MODULE_DEVICE_TABLE(i2c, da9063_i2c_id);
static struct i2c_driver da9063_i2c_driver = {
.driver = {
.name = "da9063",
.owner = THIS_MODULE,
},
.probe = da9063_i2c_probe,
.remove = da9063_i2c_remove,
.id_table = da9063_i2c_id,
};
module_i2c_driver(da9063_i2c_driver);
