| #ifndef _LINUX_AT24_H | |
| #define _LINUX_AT24_H | |
| #include <linux/types.h> | |
| /* | |
| * As seen through Linux I2C, differences between the most common types of I2C | |
| * memory include: | |
| * - How much memory is available (usually specified in bit)? | |
| * - What write page size does it support? | |
| * - Special flags (16 bit addresses, read_only, world readable...)? | |
| * | |
| * If you set up a custom eeprom type, please double-check the parameters. | |
| * Especially page_size needs extra care, as you risk data loss if your value | |
| * is bigger than what the chip actually supports! | |
| */ | |
| struct at24_platform_data { | |
| u32 byte_len; /* size (sum of all addr) */ | |
| u16 page_size; /* for writes */ | |
| u8 flags; | |
| #define AT24_FLAG_ADDR16 0x80 /* address pointer is 16 bit */ | |
| #define AT24_FLAG_READONLY 0x40 /* sysfs-entry will be read-only */ | |
| #define AT24_FLAG_IRUGO 0x20 /* sysfs-entry will be world-readable */ | |
| #define AT24_FLAG_TAKE8ADDR 0x10 /* take always 8 addresses (24c00) */ | |
| }; | |
| #endif /* _LINUX_AT24_H */ |