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Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

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Pull i2c changes from Wolfram Sang:
 - new drivers for exynos5, bcm kona, and st micro
 - bigger overhauls for drivers mxs and rcar
 - typical driver bugfixes, cleanups, improvements
 - got rid of the superfluous 'driver' member in i2c_client struct This
   touches a few drivers in other subsystems.  All acked.

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (38 commits)
  i2c: bcm-kona: fix error return code in bcm_kona_i2c_probe()
  i2c: i2c-eg20t: do not print error message in syslog if no ACK received
  i2c: bcm-kona: Introduce Broadcom I2C Driver
  i2c: cbus-gpio: Fix device tree binding
  i2c: wmt: add missing clk_disable_unprepare() on error
  i2c: designware: add new ACPI IDs
  i2c: i801: Add Device IDs for Intel Wildcat Point-LP PCH
  i2c: exynos5: Remove incorrect clk_disable_unprepare
  i2c: i2c-st: Add ST I2C controller
  i2c: exynos5: add High Speed I2C controller driver
  i2c: rcar: fixup rcar type naming
  i2c: scmi: remove some bogus NULL checks
  i2c: sh_mobile & rcar: Enable the driver on all ARM platforms
  i2c: sh_mobile: Convert to clk_prepare/unprepare
  i2c: mux: gpio: use reg value for i2c_add_mux_adapter
  i2c: mux: gpio: use gpio_set_value_cansleep()
  i2c: Include linux/of.h header
  i2c: mxs: Fix PIO mode on i.MX23
  i2c: mxs: Rework the PIO mode operation
  i2c: mxs: distinguish i.MX23 and i.MX28 based I2C controller
  ...
This commit is contained in:
Linus Torvalds 2013-11-18 15:50:07 -08:00
commit 13509c3a9d
66 changed files with 3109 additions and 242 deletions
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55
include/linux/platform_data/at24.h Normal file
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/*
* at24.h - platform_data for the at24 (generic eeprom) driver
* (C) Copyright 2008 by Pengutronix
* (C) Copyright 2012 by Wolfram Sang
* same license as the driver
*/
#ifndef _LINUX_AT24_H
#define _LINUX_AT24_H
#include <linux/types.h>
#include <linux/memory.h>
/**
* struct at24_platform_data - data to set up at24 (generic eeprom) driver
* @byte_len: size of eeprom in byte
* @page_size: number of byte which can be written in one go
* @flags: tunable options, check AT24_FLAG_* defines
* @setup: an optional callback invoked after eeprom is probed; enables kernel
code to access eeprom via memory_accessor, see example
* @context: optional parameter passed to setup()
*
* 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!
*
* An example in pseudo code for a setup() callback:
*
* void get_mac_addr(struct memory_accessor *mem_acc, void *context)
* {
* u8 *mac_addr = ethernet_pdata->mac_addr;
* off_t offset = context;
*
* // Read MAC addr from EEPROM
* if (mem_acc->read(mem_acc, mac_addr, offset, ETH_ALEN) == ETH_ALEN)
* pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr);
* }
*
* This function pointer and context can now be set up in at24_platform_data.
*/
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 */