| #ifndef __LINUX_SPI_DS1305_H |
| #define __LINUX_SPI_DS1305_H |
| |
| /* |
| * One-time configuration for ds1305 and ds1306 RTC chips. |
| * |
| * Put a pointer to this in spi_board_info.platform_data if you want to |
| * be sure that Linux (re)initializes this as needed ... after losing |
| * backup power, and potentially on the first boot. |
| */ |
| struct ds1305_platform_data { |
| |
| /* Trickle charge configuration: it's OK to leave out the MAGIC |
| * bitmask; mask in either DS1 or DS2, and then one of 2K/4k/8K. |
| */ |
| #define DS1305_TRICKLE_MAGIC 0xa0 |
| #define DS1305_TRICKLE_DS2 0x08 /* two diodes */ |
| #define DS1305_TRICKLE_DS1 0x04 /* one diode */ |
| #define DS1305_TRICKLE_2K 0x01 /* 2 KOhm resistance */ |
| #define DS1305_TRICKLE_4K 0x02 /* 4 KOhm resistance */ |
| #define DS1305_TRICKLE_8K 0x03 /* 8 KOhm resistance */ |
| u8 trickle; |
| |
| /* set only on ds1306 parts */ |
| bool is_ds1306; |
| |
| /* ds1306 only: enable 1 Hz output */ |
| bool en_1hz; |
| |
| /* REVISIT: the driver currently expects nINT0 to be wired |
| * as the alarm IRQ. ALM1 may also need to be set up ... |
| */ |
| }; |
| |
| #endif /* __LINUX_SPI_DS1305_H */ |