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/*
* Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
* mx53_ard_pmic_ltc3589.c -- i.MX53 ARD Driver for Linear LTC3589
* PMIC
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/regulator/ltc3589.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/ltc3589/core.h>
#include <mach/iomux-mx53.h>
#include <mach/irqs.h>
#define ARD_PMIC_INT (4*32 + 7) /* GPIO_5_7 */
/* CPU */
static struct regulator_consumer_supply sw1_consumers[] = {
{
.supply = "cpu_vcc",
}
};
struct ltc3589;
static struct regulator_init_data sw1_init = {
.constraints = {
.name = "SW1",
.min_uV = 564000,
.max_uV = 1167000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
.valid_modes_mask = 0,
.always_on = 1,
.boot_on = 1,
.initial_state = PM_SUSPEND_MEM,
.state_mem = {
.uV = 950000,
.mode = REGULATOR_MODE_NORMAL,
.enabled = 1,
},
},
.num_consumer_supplies = ARRAY_SIZE(sw1_consumers),
.consumer_supplies = sw1_consumers,
};
static struct regulator_init_data sw2_init = {
.constraints = {
.name = "SW2",
.min_uV = 704000,
.max_uV = 1456000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
.always_on = 1,
.boot_on = 1,
.initial_state = PM_SUSPEND_MEM,
.state_mem = {
.uV = 950000,
.mode = REGULATOR_MODE_NORMAL,
.enabled = 1,
},
},
};
static struct regulator_init_data sw3_init = {
.constraints = {
.name = "SW3",
.min_uV = 1342000,
.max_uV = 2775000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
.always_on = 1,
.boot_on = 1,
},
};
static struct regulator_init_data sw4_init = {
.constraints = {
.name = "SW4",
.apply_uV = 1,
.boot_on = 1,
}
};
static struct regulator_init_data ldo1_init = {
.constraints = {
.name = "LDO1_STBY",
.apply_uV = 1,
.boot_on = 1,
},
};
static struct regulator_init_data ldo2_init = {
.constraints = {
.name = "LDO2",
.min_uV = 704000,
.max_uV = 1456000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
.valid_modes_mask = REGULATOR_MODE_NORMAL,
.always_on = 1,
.boot_on = 1,
},
};
static struct regulator_init_data ldo3_init = {
.constraints = {
.name = "LDO3",
.apply_uV = 1,
.boot_on = 1,
},
};
static struct regulator_init_data ldo4_init = {
.constraints = {
.name = "LDO4",
.min_uV = 1800000,
.max_uV = 3300000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
.valid_modes_mask = REGULATOR_MODE_NORMAL,
.always_on = 1,
.boot_on = 1,
},
};
static void ltc3589_nop_release(struct device *dev)
{
/* Nothing */
}
static struct platform_device ltc3589_regulator_device[] = {
{
.name = "ltc3589-dev",
.id = 0,
.dev = {
.release = ltc3589_nop_release,
},
},
};
static int mx53_ltc3589_init(struct ltc3589 *ltc3589)
{
int i;
printk(KERN_INFO "Initializing regulators for ARD\n");
for (i = 0; i < ARRAY_SIZE(ltc3589_regulator_device); i++) {
if (platform_device_register(<c3589_regulator_device[i]) < 0)
dev_err(<c3589_regulator_device[i].dev,
"Unable to register LTC3589 device\n");
}
ltc3589_register_regulator(ltc3589, LTC3589_SW1, &sw1_init);
ltc3589_register_regulator(ltc3589, LTC3589_SW2, &sw2_init);
ltc3589_register_regulator(ltc3589, LTC3589_SW3, &sw3_init);
ltc3589_register_regulator(ltc3589, LTC3589_SW4, &sw4_init);
ltc3589_register_regulator(ltc3589, LTC3589_LDO1, &ldo1_init);
ltc3589_register_regulator(ltc3589, LTC3589_LDO2, &ldo2_init);
ltc3589_register_regulator(ltc3589, LTC3589_LDO3, &ldo3_init);
ltc3589_register_regulator(ltc3589, LTC3589_LDO4, &ldo4_init);
return 0;
}
static struct ltc3589_platform_data __initdata ltc3589_plat = {
.init = mx53_ltc3589_init,
};
static struct i2c_board_info __initdata ltc3589_i2c_device = {
I2C_BOARD_INFO("ltc3589", 0x34),
.irq = IOMUX_TO_IRQ_V3(ARD_PMIC_INT),
.platform_data = <c3589_plat,
};
static __init int mx53_init_i2c(void)
{
return i2c_register_board_info(1, <c3589_i2c_device, 1);
}
subsys_initcall(mx53_init_i2c);
static __init int ltc3589_pmic_init(void)
{
int i = 0;
int ret = 0;
struct regulator *regulator;
char *ltc3589_global_regulator[] = {
"SW1",
"SW2",
"SW3",
"SW4",
"LDO1_STBY",
"LDO2",
"LDO3",
"LDO4",
};
while ((i < ARRAY_SIZE(ltc3589_global_regulator)) &&
!IS_ERR_VALUE(
(unsigned long)(regulator =
regulator_get(NULL,
ltc3589_global_regulator
[i])))) {
regulator_enable(regulator);
i++;
}
return ret;
}
late_initcall(ltc3589_pmic_init);
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