diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-15 11:16:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-15 11:16:05 -0700 |
| commit | dc221eae08eea3b0db127d1f152fac24d10b6a52 (patch) | |
| tree | eea4cc64f2568db6aea94b9491120525ebcd738f /include/linux/i2c | |
| parent | 98339cbd360b77c3167db287fd611468c2c44559 (diff) | |
| parent | 4735c98f8447acb1c8977e2b8024640f7bf36dd6 (diff) | |
Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: (56 commits)
i2c: Add detection capability to new-style drivers
i2c: Call client_unregister for new-style devices too
i2c: Clean up old chip drivers
i2c-ibm_iic: Register child nodes
i2c: New-style EEPROM driver using device IDs
i2c: Export the i2c_bus_type symbol
i2c-au1550: Fix PM support
i2c-dev: Delete empty detach_client callback
i2c: Drop stray references to lm_sensors
i2c: Check for ACPI resource conflicts
i2c-ocores: basic PM support
i2c-sibyte: SWARM I2C board initialization
i2c-i801: Fix handling of error conditions
i2c-i801: Rename local variable temp to status
i2c-i801: Properly report bus arbitration loss
i2c-i801: Remove verbose debugging messages
i2c-algo-pcf: Drop unused struct members
i2c-algo-pcf: Multi-master lost-arbitration improvement
i2c: Deprecate the legacy gpio drivers
i2c-pxa: Initialize early
...
Diffstat (limited to 'include/linux/i2c')
| -rw-r--r-- | include/linux/i2c/at24.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/i2c/at24.h b/include/linux/i2c/at24.h new file mode 100644 index 00000000000..f6edd522a92 --- /dev/null +++ b/include/linux/i2c/at24.h @@ -0,0 +1,28 @@ +#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 */ |