mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 17:56:42 +07:00
98fb3a3473
Replace spaces with tabs in the definition of AT24_FLAG_NO_RDROL.
Fixes: 9d404411091c ("eeprom: at24: support eeproms that do not auto-rollover reads")
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
/*
|
|
* 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/nvmem-consumer.h>
|
|
#include <linux/bitops.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 nvmem, 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 nvmem_device *nvmem, void *context)
|
|
* {
|
|
* u8 *mac_addr = ethernet_pdata->mac_addr;
|
|
* off_t offset = context;
|
|
*
|
|
* // Read MAC addr from EEPROM
|
|
* if (nvmem_device_read(nvmem, offset, ETH_ALEN, mac_addr) == 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 BIT(7) /* address pointer is 16 bit */
|
|
#define AT24_FLAG_READONLY BIT(6) /* sysfs-entry will be read-only */
|
|
#define AT24_FLAG_IRUGO BIT(5) /* sysfs-entry will be world-readable */
|
|
#define AT24_FLAG_TAKE8ADDR BIT(4) /* take always 8 addresses (24c00) */
|
|
#define AT24_FLAG_SERIAL BIT(3) /* factory-programmed serial number */
|
|
#define AT24_FLAG_MAC BIT(2) /* factory-programmed mac address */
|
|
#define AT24_FLAG_NO_RDROL BIT(1) /* does not auto-rollover reads to */
|
|
/* the next slave address */
|
|
|
|
void (*setup)(struct nvmem_device *nvmem, void *context);
|
|
void *context;
|
|
};
|
|
|
|
#endif /* _LINUX_AT24_H */
|