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/*
* Device access for Dollar Cove TI PMIC
*
* Copyright (c) 2014, Intel Corporation.
* Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
*
* Cleanup and forward-ported
* Copyright (c) 2017 Takashi Iwai <tiwai@suse.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/acpi.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/mfd/core.h>
#include <linux/mfd/intel_soc_pmic.h>
#include <linux/module.h>
#include <linux/regmap.h>
#define CHTDC_TI_IRQLVL1 0x01
#define CHTDC_TI_MASK_IRQLVL1 0x02
/* Level 1 IRQs */
enum {
CHTDC_TI_PWRBTN = 0, /* power button */
CHTDC_TI_DIETMPWARN, /* thermal */
CHTDC_TI_ADCCMPL, /* ADC */
/* No IRQ 3 */
CHTDC_TI_VBATLOW = 4, /* battery */
CHTDC_TI_VBUSDET, /* power source */
/* No IRQ 6 */
CHTDC_TI_CCEOCAL = 7, /* battery */
};
static struct resource power_button_resources[] = {
DEFINE_RES_IRQ(CHTDC_TI_PWRBTN),
};
static struct resource thermal_resources[] = {
DEFINE_RES_IRQ(CHTDC_TI_DIETMPWARN),
};
static struct resource adc_resources[] = {
DEFINE_RES_IRQ(CHTDC_TI_ADCCMPL),
};
static struct resource pwrsrc_resources[] = {
DEFINE_RES_IRQ(CHTDC_TI_VBUSDET),
};
static struct resource battery_resources[] = {
DEFINE_RES_IRQ(CHTDC_TI_VBATLOW),
DEFINE_RES_IRQ(CHTDC_TI_CCEOCAL),
};
static struct mfd_cell chtdc_ti_dev[] = {
{
.name = "chtdc_ti_pwrbtn",
.num_resources = ARRAY_SIZE(power_button_resources),
.resources = power_button_resources,
}, {
.name = "chtdc_ti_adc",
.num_resources = ARRAY_SIZE(adc_resources),
.resources = adc_resources,
}, {
.name = "chtdc_ti_thermal",
.num_resources = ARRAY_SIZE(thermal_resources),
.resources = thermal_resources,
}, {
.name = "chtdc_ti_pwrsrc",
.num_resources = ARRAY_SIZE(pwrsrc_resources),
.resources = pwrsrc_resources,
}, {
.name = "chtdc_ti_battery",
.num_resources = ARRAY_SIZE(battery_resources),
.resources = battery_resources,
},
{ .name = "chtdc_ti_region", },
};
static const struct regmap_config chtdc_ti_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 128,
.cache_type = REGCACHE_NONE,
};
static const struct regmap_irq chtdc_ti_irqs[] = {
REGMAP_IRQ_REG(CHTDC_TI_PWRBTN, 0, BIT(CHTDC_TI_PWRBTN)),
REGMAP_IRQ_REG(CHTDC_TI_DIETMPWARN, 0, BIT(CHTDC_TI_DIETMPWARN)),
REGMAP_IRQ_REG(CHTDC_TI_ADCCMPL, 0, BIT(CHTDC_TI_ADCCMPL)),
REGMAP_IRQ_REG(CHTDC_TI_VBATLOW, 0, BIT(CHTDC_TI_VBATLOW)),
REGMAP_IRQ_REG(CHTDC_TI_VBUSDET, 0, BIT(CHTDC_TI_VBUSDET)),
REGMAP_IRQ_REG(CHTDC_TI_CCEOCAL, 0, BIT(CHTDC_TI_CCEOCAL)),
};
static const struct regmap_irq_chip chtdc_ti_irq_chip = {
.name = KBUILD_MODNAME,
.irqs = chtdc_ti_irqs,
.num_irqs = ARRAY_SIZE(chtdc_ti_irqs),
.num_regs = 1,
.status_base = CHTDC_TI_IRQLVL1,
.mask_base = CHTDC_TI_MASK_IRQLVL1,
.ack_base = CHTDC_TI_IRQLVL1,
};
static int chtdc_ti_probe(struct i2c_client *i2c)
{
struct device *dev = &i2c->dev;
struct intel_soc_pmic *pmic;
int ret;
pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
if (!pmic)
return -ENOMEM;
i2c_set_clientdata(i2c, pmic);
pmic->regmap = devm_regmap_init_i2c(i2c, &chtdc_ti_regmap_config);
if (IS_ERR(pmic->regmap))
return PTR_ERR(pmic->regmap);
pmic->irq = i2c->irq;
ret = devm_regmap_add_irq_chip(dev, pmic->regmap, pmic->irq,
IRQF_ONESHOT, 0,
&chtdc_ti_irq_chip,
&pmic->irq_chip_data);
if (ret)
return ret;
return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, chtdc_ti_dev,
ARRAY_SIZE(chtdc_ti_dev), NULL, 0,
regmap_irq_get_domain(pmic->irq_chip_data));
}
static void chtdc_ti_shutdown(struct i2c_client *i2c)
{
struct intel_soc_pmic *pmic = i2c_get_clientdata(i2c);
disable_irq(pmic->irq);
}
static int __maybe_unused chtdc_ti_suspend(struct device *dev)
{
struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
disable_irq(pmic->irq);
return 0;
}
static int __maybe_unused chtdc_ti_resume(struct device *dev)
{
struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
enable_irq(pmic->irq);
return 0;
}
static SIMPLE_DEV_PM_OPS(chtdc_ti_pm_ops, chtdc_ti_suspend, chtdc_ti_resume);
static const struct acpi_device_id chtdc_ti_acpi_ids[] = {
{ "INT33F5" },
{ },
};
MODULE_DEVICE_TABLE(acpi, chtdc_ti_acpi_ids);
static struct i2c_driver chtdc_ti_i2c_driver = {
.driver = {
.name = "intel_soc_pmic_chtdc_ti",
.pm = &chtdc_ti_pm_ops,
.acpi_match_table = chtdc_ti_acpi_ids,
},
.probe_new = chtdc_ti_probe,
.shutdown = chtdc_ti_shutdown,
};
module_i2c_driver(chtdc_ti_i2c_driver);
MODULE_DESCRIPTION("I2C driver for Intel SoC Dollar Cove TI PMIC");
MODULE_LICENSE("GPL v2");
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