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/*
* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
/*!
* @file mc9sdz60/mcu_pmic_power.c
* @brief This is the main file of mc9sdz60 Power Control driver.
* @This driver is deprecated, replaced by Wolfson regulator architecture
* @ingroup PMIC_POWER
*/
/*
* Includes
*/
#include <linux/platform_device.h>
#include <asm/ioctl.h>
#include <asm/arch/pmic_status.h>
#include <asm/arch/pmic_external.h>
#include <asm/arch/pmic_power.h>
#include "../core/pmic_config.h"
/*
* PMIC Power Control API
*/
/*!
* This is the suspend of power management for Power Control
* API module.
*
* @param pdev the device structure used to give information on which power
* device (0 through 3 channels) to suspend
* @param state the power state the device is entering
*
* @return The function always returns 0.
*/
static int pmic_power_suspend(struct platform_device *pdev, pm_message_t state)
{
return 0;
};
/*!
* This is the resume of power management API.
* It suports RESTORE state.
*
* @param pdev the device structure used to give information on which power
* device (0 through 3 channels) to suspend
*
* @return The function always returns 0.
*/
static int pmic_power_resume(struct platform_device *pdev)
{
return 0;
};
/*!
* This function sets user power off in power control register and thus powers
* off the phone.
*
* @return This function returns PMIC_SUCCESS if successful.
*/
PMIC_STATUS pmic_power_off(void)
{
#define POWER_OFF_DELAY_MS 200
u8 mask = 0;
CHECK_ERROR(pmic_write_reg
(REG_MCU_DELAY_CONFIG, POWER_OFF_DELAY_MS, 0xff));
SET_BIT_IN_BYTE(mask, 4);
CHECK_ERROR(pmic_write_reg(REG_MCU_POWER_CTL, mask, mask));
return PMIC_SUCCESS;
}
EXPORT_SYMBOL(pmic_power_off);
/*!
* This function turns on a regulator.
*
* @param regulator The regulator to be truned on.
*
* @return This function returns PMIC_SUCCESS if successful.
*/
PMIC_STATUS pmic_power_regulator_on(t_pmic_regulator regulator)
{
u8 reg_mask = 0;
int reg_num;
if (regulator > MCU_LDO7 || regulator < MCU_SW1)
return PMIC_NOT_SUPPORTED;
switch (regulator) {
case MCU_SW1:
SET_BIT_IN_BYTE(reg_mask, 0);
reg_num = REG_MCU_POWER_CTL;
break;
case MCU_SW2:
SET_BIT_IN_BYTE(reg_mask, 1);
reg_num = REG_MCU_POWER_CTL;
break;
case MCU_SW3:
SET_BIT_IN_BYTE(reg_mask, 0);
reg_num = REG_MAX8660_OUTPUT_ENABLE_1;
break;
case MCU_SW4:
SET_BIT_IN_BYTE(reg_mask, 2);
reg_num = REG_MAX8660_OUTPUT_ENABLE_1;
break;
case MCU_LDO5:
SET_BIT_IN_BYTE(reg_mask, 3);
reg_num = REG_MCU_POWER_CTL;
break;
case MCU_LDO6:
SET_BIT_IN_BYTE(reg_mask, 1);
reg_num = REG_MAX8660_OUTPUT_ENABLE_2;
break;
case MCU_LDO7:
SET_BIT_IN_BYTE(reg_mask, 2);
reg_num = REG_MAX8660_OUTPUT_ENABLE_2;
break;
default:
return PMIC_PARAMETER_ERROR;
}
CHECK_ERROR(pmic_write_reg(reg_num, reg_mask, reg_mask));
return PMIC_SUCCESS;
}
EXPORT_SYMBOL(pmic_power_regulator_on);
/*!
* This function turns off a regulator.
*
* @param regulator The regulator to be truned off.
*
* @return This function returns PMIC_SUCCESS if successful.
*/
PMIC_STATUS pmic_power_regulator_off(t_pmic_regulator regulator)
{
u8 reg_mask = 0;
unsigned int reg_read = 0;
int reg_num;
if (regulator > MCU_LDO7 || regulator < MCU_SW1)
return PMIC_NOT_SUPPORTED;
switch (regulator) {
case MCU_SW1:
SET_BIT_IN_BYTE(reg_mask, 0);
reg_num = REG_MCU_POWER_CTL;
break;
case MCU_SW2:
SET_BIT_IN_BYTE(reg_mask, 1);
reg_num = REG_MCU_POWER_CTL;
break;
case MCU_SW3:
SET_BIT_IN_BYTE(reg_mask, 0);
reg_num = REG_MAX8660_OUTPUT_ENABLE_1;
break;
case MCU_SW4:
SET_BIT_IN_BYTE(reg_mask, 2);
reg_num = REG_MAX8660_OUTPUT_ENABLE_1;
break;
case MCU_LDO5:
SET_BIT_IN_BYTE(reg_mask, 3);
reg_num = REG_MCU_POWER_CTL;
break;
case MCU_LDO6:
SET_BIT_IN_BYTE(reg_mask, 1);
reg_num = REG_MAX8660_OUTPUT_ENABLE_2;
break;
case MCU_LDO7:
SET_BIT_IN_BYTE(reg_mask, 2);
reg_num = REG_MAX8660_OUTPUT_ENABLE_2;
break;
default:
return PMIC_PARAMETER_ERROR;
}
CHECK_ERROR(pmic_write_reg(reg_num, 0, reg_mask));
/* handle sw3,4 */
switch (regulator) {
case MCU_SW3:
reg_mask = 0;
SET_BIT_IN_BYTE(reg_mask, 2);
CHECK_ERROR(pmic_read_reg
(REG_MCU_POWER_CTL, ®_read, reg_mask));
/* check if hw pin enable sw34 */
if (0 != reg_read) {
/* keep sw4 on */
reg_mask = 0;
SET_BIT_IN_BYTE(reg_mask, 2);
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_OUTPUT_ENABLE_1, reg_mask,
reg_mask));
/* disable hw pin to actually turn off sw3 */
reg_mask = 0;
SET_BIT_IN_BYTE(reg_mask, 2);
CHECK_ERROR(pmic_write_reg
(REG_MCU_POWER_CTL, 0, reg_mask));
}
break;
case MCU_SW4:
reg_mask = 0;
SET_BIT_IN_BYTE(reg_mask, 2);
CHECK_ERROR(pmic_read_reg
(REG_MCU_POWER_CTL, ®_read, reg_mask));
/* check if hw pin enable sw34 */
if (0 != reg_read) {
/* keep sw3 on */
reg_mask = 0;
SET_BIT_IN_BYTE(reg_mask, 0);
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_OUTPUT_ENABLE_1, reg_mask,
reg_mask));
/* disable hw pin to actually turn off sw4 */
reg_mask = 0;
SET_BIT_IN_BYTE(reg_mask, 2);
CHECK_ERROR(pmic_write_reg
(REG_MCU_POWER_CTL, 0, reg_mask));
}
break;
default:
break;
}
return PMIC_SUCCESS;
}
EXPORT_SYMBOL(pmic_power_regulator_off);
/*!
* This function sets the regulator output voltage.
*
* @param regulator The regulator to be truned off.
* @param voltage The regulator output voltage.
*
* @return This function returns PMIC_SUCCESS if successful.
*/
PMIC_STATUS pmic_power_regulator_set_voltage(t_pmic_regulator regulator,
t_regulator_voltage voltage)
{
u8 reg_mask = 0;
if (regulator > MCU_LDO7 || regulator < MCU_SW3)
return PMIC_NOT_SUPPORTED;
switch (regulator) {
case MCU_SW3:
if ((voltage.mcu_sw34 < MCU_SW34_0_725V)
|| voltage.mcu_sw34 > MCU_SW34_1_8V)
return PMIC_PARAMETER_ERROR;
/* hold on */
SET_BIT_IN_BYTE(reg_mask, 0);
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_VOLT_CHANGE_CONTROL_1, 0, reg_mask));
/* set volt */
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_V3_TARGET_VOLT_1, voltage.mcu_sw34,
0xff));
/* start ramp */
SET_BIT_IN_BYTE(reg_mask, 0);
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_VOLT_CHANGE_CONTROL_1, reg_mask,
reg_mask));
break;
case MCU_SW4:
if ((voltage.mcu_sw34 < MCU_SW34_0_725V)
|| voltage.mcu_sw34 > MCU_SW34_1_8V)
return PMIC_PARAMETER_ERROR;
/* hold on */
SET_BIT_IN_BYTE(reg_mask, 4);
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_VOLT_CHANGE_CONTROL_1, 0, reg_mask));
/* set volt */
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_V4_TARGET_VOLT_1, voltage.mcu_sw34,
0xff));
/* start ramp */
SET_BIT_IN_BYTE(reg_mask, 4);
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_VOLT_CHANGE_CONTROL_1, reg_mask,
reg_mask));
break;
case MCU_LDO5:
if (voltage.mcu_ldo5 < MCU_LDO5_1_725V
|| voltage.mcu_ldo5 > MCU_LDO5_2_0V)
return PMIC_PARAMETER_ERROR;
/* hold on */
SET_BIT_IN_BYTE(reg_mask, 6);
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_VOLT_CHANGE_CONTROL_1, 0, reg_mask));
/* set volt */
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_V5_TARGET_VOLT_1, voltage.mcu_ldo5,
0xff));
/* start ramp */
SET_BIT_IN_BYTE(reg_mask, 6);
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_VOLT_CHANGE_CONTROL_1, reg_mask,
reg_mask));
break;
break;
case MCU_LDO6:
if (voltage.mcu_ldo67 < MCU_LDO67_1_8V
|| voltage.mcu_ldo67 > MCU_LDO67_3_3V)
return PMIC_PARAMETER_ERROR;
/* set volt */
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_V6V7_TARGET_VOLT, voltage.mcu_ldo67,
0x0f));
break;
case MCU_LDO7:
if (voltage.mcu_ldo67 < MCU_LDO67_1_8V
|| voltage.mcu_ldo67 > MCU_LDO67_3_3V)
return PMIC_PARAMETER_ERROR;
break;
/* set volt */
CHECK_ERROR(pmic_write_reg
(REG_MAX8660_V6V7_TARGET_VOLT,
(voltage.mcu_ldo67 << 4), 0xf0));
default:
return PMIC_PARAMETER_ERROR;
}
return PMIC_SUCCESS;
}
EXPORT_SYMBOL(pmic_power_regulator_set_voltage);
/*!
* This function retrives the regulator output voltage.
*
* @param regulator The regulator to be truned off.
* @param voltage Pointer to regulator output voltage.
*
* @return This function returns PMIC_SUCCESS if successful.
*/
PMIC_STATUS pmic_power_regulator_get_voltage(t_pmic_regulator regulator,
t_regulator_voltage *voltage)
{
unsigned int reg_val = 0;
if (regulator > MCU_LDO7 || regulator < MCU_SW3)
return PMIC_NOT_SUPPORTED;
switch (regulator) {
case MCU_SW3:
CHECK_ERROR(pmic_read_reg
(REG_MAX8660_V3_TARGET_VOLT_1, ®_val, 0xff));
voltage->mcu_sw34 = reg_val;
break;
case MCU_SW4:
CHECK_ERROR(pmic_read_reg
(REG_MAX8660_V4_TARGET_VOLT_1, ®_val, 0xff));
voltage->mcu_sw34 = reg_val;
break;
case MCU_LDO5:
CHECK_ERROR(pmic_read_reg
(REG_MAX8660_V5_TARGET_VOLT_1, ®_val, 0xff));
voltage->mcu_ldo5 = reg_val;
break;
case MCU_LDO6:
CHECK_ERROR(pmic_read_reg
(REG_MAX8660_V6V7_TARGET_VOLT, ®_val, 0x0f));
voltage->mcu_ldo67 = reg_val;
break;
case MCU_LDO7:
CHECK_ERROR(pmic_read_reg
(REG_MAX8660_V6V7_TARGET_VOLT, ®_val, 0xf0));
voltage->mcu_ldo67 = (reg_val >> 4) & 0xf;
break;
default:
return PMIC_PARAMETER_ERROR;
}
return PMIC_SUCCESS;
}
EXPORT_SYMBOL(pmic_power_regulator_get_voltage);
/*
* Initialization and Exit
*/
PMIC_STATUS pmic_power_regulator_init()
{
t_regulator_voltage volt;
volt.mcu_sw34 = MCU_SW34_1_2V;
CHECK_ERROR(pmic_power_regulator_set_voltage(MCU_SW3, volt));
volt.mcu_sw34 = MCU_SW34_1_5V;
CHECK_ERROR(pmic_power_regulator_set_voltage(MCU_SW4, volt));
volt.mcu_ldo5 = MCU_LDO5_1_8V;
CHECK_ERROR(pmic_power_regulator_set_voltage(MCU_LDO5, volt));
volt.mcu_ldo67 = MCU_LDO67_2_5V;
CHECK_ERROR(pmic_power_regulator_set_voltage(MCU_LDO6, volt));
volt.mcu_ldo67 = MCU_LDO67_2_8V;
CHECK_ERROR(pmic_power_regulator_set_voltage(MCU_LDO7, volt));
return PMIC_SUCCESS;
}
static int pmic_power_probe(struct platform_device *pdev)
{
printk(KERN_INFO "PMIC Power successfully probed\n");
pmic_power_regulator_init();
return 0;
}
static struct platform_driver pmic_power_driver_ldm = {
.driver = {
.name = "pmic_power",
},
.suspend = pmic_power_suspend,
.resume = pmic_power_resume,
.probe = pmic_power_probe,
.remove = NULL,
};
static int __init pmic_power_init(void)
{
pr_debug("PMIC Power driver loading..\n");
return platform_driver_register(&pmic_power_driver_ldm);
}
static void __exit pmic_power_exit(void)
{
platform_driver_unregister(&pmic_power_driver_ldm);
pr_debug("PMIC Power driver successfully unloaded\n");
}
/*
* Module entry points
*/
subsys_initcall(pmic_power_init);
module_exit(pmic_power_exit);
MODULE_DESCRIPTION("PMIC Power Control device driver");
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_LICENSE("GPL");
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