bbd51b1ff1
Create 88pm8607-i2c driver to support all I2C operation of 88PM8607. Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
135 lines
3.4 KiB
C
135 lines
3.4 KiB
C
/*
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* Base driver for Marvell 88PM8607
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*
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* Copyright (C) 2009 Marvell International Ltd.
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* Haojian Zhuang <haojian.zhuang@marvell.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/88pm8607.h>
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#define PM8607_REG_RESOURCE(_start, _end) \
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{ \
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.start = PM8607_##_start, \
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.end = PM8607_##_end, \
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.flags = IORESOURCE_IO, \
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}
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static struct resource pm8607_regulator_resources[] = {
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PM8607_REG_RESOURCE(BUCK1, BUCK1),
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PM8607_REG_RESOURCE(BUCK2, BUCK2),
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PM8607_REG_RESOURCE(BUCK3, BUCK3),
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PM8607_REG_RESOURCE(LDO1, LDO1),
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PM8607_REG_RESOURCE(LDO2, LDO2),
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PM8607_REG_RESOURCE(LDO3, LDO3),
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PM8607_REG_RESOURCE(LDO4, LDO4),
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PM8607_REG_RESOURCE(LDO5, LDO5),
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PM8607_REG_RESOURCE(LDO6, LDO6),
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PM8607_REG_RESOURCE(LDO7, LDO7),
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PM8607_REG_RESOURCE(LDO8, LDO8),
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PM8607_REG_RESOURCE(LDO9, LDO9),
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PM8607_REG_RESOURCE(LDO10, LDO10),
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PM8607_REG_RESOURCE(LDO12, LDO12),
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PM8607_REG_RESOURCE(LDO14, LDO14),
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};
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#define PM8607_REG_DEVS(_name, _id) \
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{ \
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.name = "88pm8607-" #_name, \
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.num_resources = 1, \
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.resources = &pm8607_regulator_resources[PM8607_ID_##_id], \
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}
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static struct mfd_cell pm8607_devs[] = {
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PM8607_REG_DEVS(buck1, BUCK1),
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PM8607_REG_DEVS(buck2, BUCK2),
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PM8607_REG_DEVS(buck3, BUCK3),
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PM8607_REG_DEVS(ldo1, LDO1),
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PM8607_REG_DEVS(ldo2, LDO2),
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PM8607_REG_DEVS(ldo3, LDO3),
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PM8607_REG_DEVS(ldo4, LDO4),
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PM8607_REG_DEVS(ldo5, LDO5),
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PM8607_REG_DEVS(ldo6, LDO6),
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PM8607_REG_DEVS(ldo7, LDO7),
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PM8607_REG_DEVS(ldo8, LDO8),
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PM8607_REG_DEVS(ldo9, LDO9),
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PM8607_REG_DEVS(ldo10, LDO10),
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PM8607_REG_DEVS(ldo12, LDO12),
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PM8607_REG_DEVS(ldo14, LDO14),
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};
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int pm860x_device_init(struct pm8607_chip *chip,
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struct pm8607_platform_data *pdata)
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{
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int i, count;
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int ret;
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ret = pm8607_reg_read(chip, PM8607_CHIP_ID);
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if (ret < 0) {
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dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
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goto out;
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}
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if ((ret & PM8607_ID_MASK) == PM8607_ID)
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dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
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ret);
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else {
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dev_err(chip->dev, "Failed to detect Marvell 88PM8607. "
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"Chip ID: %02x\n", ret);
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goto out;
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}
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chip->chip_id = ret;
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ret = pm8607_reg_read(chip, PM8607_BUCK3);
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if (ret < 0) {
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dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
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goto out;
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}
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if (ret & PM8607_BUCK3_DOUBLE)
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chip->buck3_double = 1;
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ret = pm8607_reg_read(chip, PM8607_MISC1);
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if (ret < 0) {
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dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
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goto out;
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}
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if (pdata->i2c_port == PI2C_PORT)
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ret |= PM8607_MISC1_PI2C;
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else
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ret &= ~PM8607_MISC1_PI2C;
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ret = pm8607_reg_write(chip, PM8607_MISC1, ret);
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if (ret < 0) {
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dev_err(chip->dev, "Failed to write MISC1 register: %d\n", ret);
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goto out;
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}
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count = ARRAY_SIZE(pm8607_devs);
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for (i = 0; i < count; i++) {
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ret = mfd_add_devices(chip->dev, i, &pm8607_devs[i],
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1, NULL, 0);
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if (ret != 0) {
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dev_err(chip->dev, "Failed to add subdevs\n");
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goto out;
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}
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}
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out:
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return ret;
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}
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void pm8607_device_exit(struct pm8607_chip *chip)
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{
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mfd_remove_devices(chip->dev);
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}
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MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM8607");
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MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
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MODULE_LICENSE("GPL");
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