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|
/*
* max77686.c - mfd core driver for the Maxim 77686/802
*
* Copyright (C) 2012 Samsung Electronics
* Chiwoong Byun <woong.byun@smasung.com>
* Jonghwa Lee <jonghwa3.lee@samsung.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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* This driver is based on max8997.c
*/
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/module.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max77686.h>
#include <linux/mfd/max77686-private.h>
#include <linux/err.h>
#include <linux/of.h>
#define I2C_ADDR_RTC (0x0C >> 1)
static const struct mfd_cell max77686_devs[] = {
{ .name = "max77686-pmic", },
{ .name = "max77686-rtc", },
{ .name = "max77686-clk", },
};
static const struct mfd_cell max77802_devs[] = {
{ .name = "max77802-pmic", },
{ .name = "max77802-clk", },
{ .name = "max77802-rtc", },
};
static bool max77802_pmic_is_accessible_reg(struct device *dev,
unsigned int reg)
{
return (reg >= MAX77802_REG_DEVICE_ID && reg < MAX77802_REG_PMIC_END);
}
static bool max77802_rtc_is_accessible_reg(struct device *dev,
unsigned int reg)
{
return (reg >= MAX77802_RTC_INT && reg < MAX77802_RTC_END);
}
static bool max77802_is_accessible_reg(struct device *dev, unsigned int reg)
{
return (max77802_pmic_is_accessible_reg(dev, reg) ||
max77802_rtc_is_accessible_reg(dev, reg));
}
static bool max77802_pmic_is_precious_reg(struct device *dev, unsigned int reg)
{
return (reg == MAX77802_REG_INTSRC || reg == MAX77802_REG_INT1 ||
reg == MAX77802_REG_INT2);
}
static bool max77802_rtc_is_precious_reg(struct device *dev, unsigned int reg)
{
return (reg == MAX77802_RTC_INT ||
reg == MAX77802_RTC_UPDATE0 ||
reg == MAX77802_RTC_UPDATE1);
}
static bool max77802_is_precious_reg(struct device *dev, unsigned int reg)
{
return (max77802_pmic_is_precious_reg(dev, reg) ||
max77802_rtc_is_precious_reg(dev, reg));
}
static bool max77802_pmic_is_volatile_reg(struct device *dev, unsigned int reg)
{
return (max77802_is_precious_reg(dev, reg) ||
reg == MAX77802_REG_STATUS1 || reg == MAX77802_REG_STATUS2 ||
reg == MAX77802_REG_PWRON);
}
static bool max77802_rtc_is_volatile_reg(struct device *dev, unsigned int reg)
{
return (max77802_rtc_is_precious_reg(dev, reg) ||
reg == MAX77802_RTC_SEC ||
reg == MAX77802_RTC_MIN ||
reg == MAX77802_RTC_HOUR ||
reg == MAX77802_RTC_WEEKDAY ||
reg == MAX77802_RTC_MONTH ||
reg == MAX77802_RTC_YEAR ||
reg == MAX77802_RTC_DATE);
}
static bool max77802_is_volatile_reg(struct device *dev, unsigned int reg)
{
return (max77802_pmic_is_volatile_reg(dev, reg) ||
max77802_rtc_is_volatile_reg(dev, reg));
}
static struct regmap_config max77686_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
static struct regmap_config max77686_rtc_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
static struct regmap_config max77802_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.writeable_reg = max77802_is_accessible_reg,
.readable_reg = max77802_is_accessible_reg,
.precious_reg = max77802_is_precious_reg,
.volatile_reg = max77802_is_volatile_reg,
.name = "max77802-pmic",
.cache_type = REGCACHE_RBTREE,
};
static const struct regmap_irq max77686_irqs[] = {
/* INT1 interrupts */
{ .reg_offset = 0, .mask = MAX77686_INT1_PWRONF_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_PWRONR_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_JIGONBF_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_JIGONBR_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_ACOKBF_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_ACOKBR_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_ONKEY1S_MSK, },
{ .reg_offset = 0, .mask = MAX77686_INT1_MRSTB_MSK, },
/* INT2 interrupts */
{ .reg_offset = 1, .mask = MAX77686_INT2_140C_MSK, },
{ .reg_offset = 1, .mask = MAX77686_INT2_120C_MSK, },
};
static const struct regmap_irq_chip max77686_irq_chip = {
.name = "max77686-pmic",
.status_base = MAX77686_REG_INT1,
.mask_base = MAX77686_REG_INT1MSK,
.num_regs = 2,
.irqs = max77686_irqs,
.num_irqs = ARRAY_SIZE(max77686_irqs),
};
static const struct regmap_irq max77686_rtc_irqs[] = {
/* RTC interrupts */
{ .reg_offset = 0, .mask = MAX77686_RTCINT_RTC60S_MSK, },
{ .reg_offset = 0, .mask = MAX77686_RTCINT_RTCA1_MSK, },
{ .reg_offset = 0, .mask = MAX77686_RTCINT_RTCA2_MSK, },
{ .reg_offset = 0, .mask = MAX77686_RTCINT_SMPL_MSK, },
{ .reg_offset = 0, .mask = MAX77686_RTCINT_RTC1S_MSK, },
{ .reg_offset = 0, .mask = MAX77686_RTCINT_WTSR_MSK, },
};
static const struct regmap_irq_chip max77686_rtc_irq_chip = {
.name = "max77686-rtc",
.status_base = MAX77686_RTC_INT,
.mask_base = MAX77686_RTC_INTM,
.num_regs = 1,
.irqs = max77686_rtc_irqs,
.num_irqs = ARRAY_SIZE(max77686_rtc_irqs),
};
static const struct regmap_irq_chip max77802_irq_chip = {
.name = "max77802-pmic",
.status_base = MAX77802_REG_INT1,
.mask_base = MAX77802_REG_INT1MSK,
.num_regs = 2,
.irqs = max77686_irqs, /* same masks as 77686 */
.num_irqs = ARRAY_SIZE(max77686_irqs),
};
static const struct regmap_irq_chip max77802_rtc_irq_chip = {
.name = "max77802-rtc",
.status_base = MAX77802_RTC_INT,
.mask_base = MAX77802_RTC_INTM,
.num_regs = 1,
.irqs = max77686_rtc_irqs, /* same masks as 77686 */
.num_irqs = ARRAY_SIZE(max77686_rtc_irqs),
};
static const struct of_device_id max77686_pmic_dt_match[] = {
{
.compatible = "maxim,max77686",
.data = (void *)TYPE_MAX77686,
},
{
.compatible = "maxim,max77802",
.data = (void *)TYPE_MAX77802,
},
{ },
};
static struct max77686_platform_data *max77686_i2c_parse_dt_pdata(struct device
*dev)
{
struct max77686_platform_data *pd;
pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
if (!pd)
return NULL;
dev->platform_data = pd;
return pd;
}
static int max77686_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id
|