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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2021 YADRO
*
* Authors:
* Nikita Shubin <n.shubin@yadro.com>
*
* derivate: lib/utils/gpio/gpio.c
* Authors:
* Anup Patel <anup.patel@wdc.com>
*/
#include <sbi/sbi_error.h>
#include <sbi_utils/i2c/i2c.h>
static SBI_LIST_HEAD(i2c_adapters_list);
struct i2c_adapter *i2c_adapter_find(int id)
{
struct sbi_dlist *pos;
sbi_list_for_each(pos, &(i2c_adapters_list)) {
struct i2c_adapter *adap = to_i2c_adapter(pos);
if (adap->id == id)
return adap;
}
return NULL;
}
int i2c_adapter_add(struct i2c_adapter *ia)
{
if (!ia)
return SBI_EINVAL;
if (i2c_adapter_find(ia->id))
return SBI_EALREADY;
sbi_list_add(&(ia->node), &(i2c_adapters_list));
return 0;
}
void i2c_adapter_remove(struct i2c_adapter *ia)
{
if (!ia)
return;
sbi_list_del(&(ia->node));
}
int i2c_adapter_write(struct i2c_adapter *ia, uint8_t addr, uint8_t reg,
uint8_t *buffer, int len)
{
if (!ia)
return SBI_EINVAL;
if (!ia->write)
return SBI_ENOSYS;
return ia->write(ia, addr, reg, buffer, len);
}
int i2c_adapter_read(struct i2c_adapter *ia, uint8_t addr, uint8_t reg,
uint8_t *buffer, int len)
{
if (!ia)
return SBI_EINVAL;
if (!ia->read)
return SBI_ENOSYS;
return ia->read(ia, addr, reg, buffer, len);
}
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