Commit 20142019 authored by Simon Glass's avatar Simon Glass

dm: Add a simple EEPROM driver

There seem to be a few EEPROM drivers around - perhaps we should have a
single standard one? This simple driver is used for sandbox testing, but
could be pressed into more active service.
Signed-off-by: default avatarSimon Glass <sjg@chromium.org>
Acked-by: default avatarHeiko Schocher <hs@denx.de>
Reviewed-by: default avatarMasahiro Yamada <yamada.m@jp.panasonic.com>
parent 776f96f5
......@@ -15,6 +15,7 @@ obj-$(CONFIG_CROS_EC_SANDBOX) += cros_ec_sandbox.o
obj-$(CONFIG_CROS_EC_SPI) += cros_ec_spi.o
obj-$(CONFIG_FSL_IIM) += fsl_iim.o
obj-$(CONFIG_GPIO_LED) += gpio_led.o
obj-$(CONFIG_I2C_EEPROM) += i2c_eeprom.o
obj-$(CONFIG_FSL_MC9SDZ60) += mc9sdz60.o
obj-$(CONFIG_MXC_OCOTP) += mxc_ocotp.o
obj-$(CONFIG_MXS_OCOTP) += mxs_ocotp.o
......
/*
* Copyright (c) 2014 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <i2c.h>
#include <i2c_eeprom.h>
static int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf,
int size)
{
return -ENODEV;
}
static int i2c_eeprom_write(struct udevice *dev, int offset,
const uint8_t *buf, int size)
{
return -ENODEV;
}
struct i2c_eeprom_ops i2c_eeprom_std_ops = {
.read = i2c_eeprom_read,
.write = i2c_eeprom_write,
};
int i2c_eeprom_std_probe(struct udevice *dev)
{
return 0;
}
static const struct udevice_id i2c_eeprom_std_ids[] = {
{ .compatible = "i2c-eeprom" },
{ }
};
U_BOOT_DRIVER(i2c_eeprom_std) = {
.name = "i2c_eeprom",
.id = UCLASS_I2C_EEPROM,
.of_match = i2c_eeprom_std_ids,
.probe = i2c_eeprom_std_probe,
.priv_auto_alloc_size = sizeof(struct i2c_eeprom),
.ops = &i2c_eeprom_std_ops,
};
UCLASS_DRIVER(i2c_eeprom) = {
.id = UCLASS_I2C_EEPROM,
.name = "i2c_eeprom",
};
......@@ -32,6 +32,7 @@ enum uclass_id {
UCLASS_THERMAL, /* Thermal sensor */
UCLASS_I2C, /* I2C bus */
UCLASS_I2C_GENERIC, /* Generic I2C device */
UCLASS_I2C_EEPROM, /* I2C EEPROM device */
UCLASS_COUNT,
UCLASS_INVALID = -1,
......
/*
* Copyright (c) 2014 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __I2C_EEPROM
#define __I2C_EEPROM
struct i2c_eeprom_ops {
int (*read)(struct udevice *dev, int offset, uint8_t *buf, int size);
int (*write)(struct udevice *dev, int offset, const uint8_t *buf,
int size);
};
struct i2c_eeprom {
};
#endif
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