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misc: at24: replace memory_accessor with nvmem_device_read

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Now that the AT24 uses the NVMEM framework, replace the
memory_accessor in the setup() callback with nvmem API calls.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andrew Lunn
2016-02-26 20:59:24 +01:00
committed by Greg Kroah-Hartman
parent 1c4b6e2c75
commit bec3c11bad
6 changed files with 13 additions and 52 deletions
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10
include/linux/platform_data/at24.h
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@@ -9,7 +9,7 @@
#define _LINUX_AT24_H
#include <linux/types.h>
#include <linux/memory.h>
#include <linux/nvmem-consumer.h>
/**
* struct at24_platform_data - data to set up at24 (generic eeprom) driver
@@ -17,7 +17,7 @@
* @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
code to access eeprom via nvmem, see example
* @context: optional parameter passed to setup()
*
* If you set up a custom eeprom type, please double-check the parameters.
@@ -26,13 +26,13 @@
*
* An example in pseudo code for a setup() callback:
*
* void get_mac_addr(struct memory_accessor *mem_acc, void *context)
* void get_mac_addr(struct mvmem_device *nvmem, 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)
* if (nvmem_device_read(nvmem, offset, ETH_ALEN, mac_addr) == ETH_ALEN)
* pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr);
* }
*
@@ -48,7 +48,7 @@ struct at24_platform_data {
#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 (*setup)(struct nvmem_device *nvmem, void *context);
void *context;
};