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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __DRIVERS_I2C_RV3028C7_CHIP_H__
#define __DRIVERS_I2C_RV3028C7_CHIP_H__
#include "rv3028c7.h"
/*
* The RTC has three different modes in how the backup voltage is used:
* - OFF: Backup voltage not used
* - DIRECT: Switch to backup voltage if it is higher than VDD
* - LEVEL: Switch to backup voltage if VDD is < 2 V and VBACKUP > 2 V
*/
enum sw_mode {
BACKUP_SW_DIRECT = 1,
BACKUP_SW_OFF,
BACKUP_SW_LEVEL
};
/*
* The RTC can be used to charge a capacitor on VBACKUP.
* There are the following modes:
* - OFF: Do not charge the backup capacitor via VDD
* - VIA_3K: Connect the backup capacitor via 3 k resistor with VDD
* - VIA_5K: Connect the backup capacitor via 5 k resistor with VDD
* - VIA_9K: Connect the backup capacitor via 9 k resistor with VDD
* - VIA_15K: Connect the backup capacitor via 15 k resistor with VDD
*/
enum charge_mode {
CHARGE_OFF = 0,
CHARGE_VIA_3K,
CHARGE_VIA_5K,
CHARGE_VIA_9K,
CHARGE_VIA_15K
};
struct drivers_i2c_rv3028c7_config {
unsigned int bus_speed; /* Bus clock in Hz */
unsigned char user_weekday; /* User day of the week to set */
unsigned char user_day; /* User day to set */
unsigned char user_month; /* User month to set */
unsigned char user_year; /* User year to set (2-digit) */
unsigned char set_user_date; /* Use user date from devicetree */
enum sw_mode bckup_sw_mode; /* Mode for switching between VDD and VBACKUP */
enum charge_mode cap_charge; /* Mode for capacitor charging */
};
#endif /* __DRIVERS_I2C_RV3028C7_CHIP_H__ */
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