diff options
Diffstat (limited to 'src/drivers/i2c/rv3028c7/chip.h')
| -rw-r--r-- | src/drivers/i2c/rv3028c7/chip.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/drivers/i2c/rv3028c7/chip.h b/src/drivers/i2c/rv3028c7/chip.h new file mode 100644 index 0000000000..0ac400531b --- /dev/null +++ b/src/drivers/i2c/rv3028c7/chip.h @@ -0,0 +1,47 @@ +/* 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 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__ */ |