static ssize_t smb347_register_store(struct sys_device *dev, struct sysdev_attribute *attr, const char *buf, size_t size)
{
int value = 0;
if (sscanf(buf, "%x", &value) <= 0) {
printk(KERN_ERR "Error setting the value in the register\n");
return -EINVAL;
}
summit_smb347_i2c_write(smb347_reg_number, value);
return size;
}
/* Enable/disable charging */
static void summit_smb347_enable_charging(int enable)
{
unsigned char value = 0xff;
summit_smb347_i2c_read(SUMMIT_SMB347_COMMAND_REG_A, &value);
if (!enable) {
value &= ~(0x2);
}
else {
value |= 0x2;
}
summit_smb347_i2c_write(SUMMIT_SMB347_COMMAND_REG_A, value);
atomic_set(&summit_smb347_charger_state, enable);
}
static void summit_smb347_init_registers(void)
{
/* Fast charge, pre charge and charge termination */
summit_smb347_i2c_write(SUMMIT_SMB347_CHARGE_CURRENT, 0x3B);
/* Input current */
summit_smb347_i2c_write(SUMMIT_SMB347_INPUT_CURR_LIMIT, 0x66);
/* Control settings */
summit_smb347_i2c_write(SUMMIT_SMB347_FUNCTIONS, 0xB6);
/* Pre charge and fast charge voltage */
summit_smb347_i2c_write(SUMMIT_SMB347_FLOAT_VOLTAGE, 0xE3);
/* Current termination and auto recharge */
summit_smb347_i2c_write(SUMMIT_SMB347_CHARGE_CONTROL, 0x41);
/* Timers and status */
summit_smb347_i2c_write(SUMMIT_SMB347_STAT_TIMERS, 0x1F);
/* PIN and enable control */
summit_smb347_i2c_write(SUMMIT_SMB347_ENABLE_CONTROL, 0x7B);
/* Thermal monitor and temp thresholds */
summit_smb347_i2c_write(SUMMIT_SMB347_THERMAL_CONTROL, 0xAF);
/* USB 3.0 and SYSOK */
summit_smb347_i2c_write(SUMMIT_SMB347_SYSOK_USB30, 0x8);
/* OTG PIN polarity and low battery */
summit_smb347_i2c_write(SUMMIT_SMB347_OTHER_CONTROL_A, 0x07);
/* Thermal control */
summit_smb347_i2c_write(SUMMIT_SMB347_OTG_THERM_CONTROL, 0x10);
/* Temperature hard/soft limits */
summit_smb347_i2c_write(SUMMIT_SMB347_CELL_TEMP, 0x18);
/* Interrupt Control */
summit_smb347_i2c_write(SUMMIT_SMB347_FAULT_INTERRUPT, 0xCF);
summit_smb347_i2c_write(SUMMIT_SMB347_INTERRUPT_STAT, 0x4);
/* Command register A */
summit_smb347_i2c_write(SUMMIT_SMB347_COMMAND_REG_A, 0xc2);
/* Command register B for USB */
summit_smb347_i2c_write(SUMMIT_SMB347_COMMAND_REG_B, 0x03);
}