| #ifndef _LINUX_AT24_H |
| #define _LINUX_AT24_H |
| |
| #include <linux/types.h> |
| #include <linux/memory.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) */ |
| |
| void (*setup)(struct memory_accessor *, void *context); |
| void *context; |
| }; |
| |
| #endif /* _LINUX_AT24_H */ |
