src/drivers/i2c/rv3028c7/rv3028c7.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef _I2C_RV3028C7_H_
   4 #define _I2C_RV3028C7_H_
   5
   6 #define RV3028C7_ACPI_NAME              "MC28"
   7 #define RV3028C7_HID_NAME               "MCRY3028"
   8 #define RV3028C7_HID_DESC               "Real Time Clock"
   9
  10 /* Register layout */
  11 #define SECOND_REG                      0x00
  12 #define MINUTE_REG                      0x01
  13 #define HOUR_REG                        0x02
  14 #define WEEK_REG                        0x03
  15 #define DAY_REG                         0x04
  16 #define MONTH_REG                       0x05
  17 #define YEAR_REG                        0x06
  18 #define STATUS_REG                      0x0e
  19 #define  PORF_BIT                       (1 << 0)
  20 #define  EE_BUSY_BIT                    (1 << 7)
  21 #define CTRL1_REG                       0x0f
  22 #define  EERD_BIT                       (1 << 3)
  23 #define CTRL2_REG                       0x10
  24 #define  HOUR_12_24_BIT                 (1 << 1)
  25 /* Registers for the internal EEPROM */
  26 #define EEP_ADR_REG                     0x25
  27 #define EEP_DATA_REG                    0x26
  28 #define EEP_CMD_REG                     0x27
  29 #define  EEP_CMD_PREFIX                 0x00
  30 #define  EEP_CMD_UPDATE                 0x11
  31 #define EEP_BACKUP_REG                  0x37
  32 #define  FEDE_BIT                       (1 << 4)
  33 #define  BSM_BIT                        2
  34 #define  BSM_MASK                       (3 << BSM_BIT)
  35 #define  TCR_BIT                        0
  36 #define  TCR_MASK                       (3 << TCR_BIT)
  37 #define  TCE_BIT                        (1 << 5)
  38
  39 #define EEP_REFRESH_EN                  1
  40 #define EEP_REFRESH_DIS                 0
  41
  42 /* The longest mentioned timeout in the datasheet is 63 ms,
  43    round up to 70 ms to be on the safe side. */
  44 #define EEP_SYNC_TIMEOUT_MS             70
  45
  46 #endif /* _I2C_RV3028C7_H_ */