#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 */