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/* SPDX-License-Identifier: GPL-2.0 */
/*
* CZ.NIC's Turris Omnia MCU driver
*
* 2024 by Marek Behún <kabel@kernel.org>
*/
#ifndef __TURRIS_OMNIA_MCU_H
#define __TURRIS_OMNIA_MCU_H
#include <linux/if_ether.h>
#include <linux/types.h>
#include <asm/byteorder.h>
struct i2c_client;
struct omnia_mcu {
struct i2c_client *client;
const char *type;
u32 features;
/* board information */
u64 board_serial_number;
u8 board_first_mac[ETH_ALEN];
u8 board_revision;
};
int omnia_cmd_write_read(const struct i2c_client *client,
void *cmd, unsigned int cmd_len,
void *reply, unsigned int reply_len);
static inline int omnia_cmd_read(const struct i2c_client *client, u8 cmd,
void *reply, unsigned int len)
{
return omnia_cmd_write_read(client, &cmd, 1, reply, len);
}
static inline int omnia_cmd_read_u32(const struct i2c_client *client, u8 cmd,
u32 *dst)
{
__le32 reply;
int err;
err = omnia_cmd_read(client, cmd, &reply, sizeof(reply));
if (err)
return err;
*dst = le32_to_cpu(reply);
return 0;
}
static inline int omnia_cmd_read_u16(const struct i2c_client *client, u8 cmd,
u16 *dst)
{
__le16 reply;
int err;
err = omnia_cmd_read(client, cmd, &reply, sizeof(reply));
if (err)
return err;
*dst = le16_to_cpu(reply);
return 0;
}
static inline int omnia_cmd_read_u8(const struct i2c_client *client, u8 cmd,
u8 *reply)
{
return omnia_cmd_read(client, cmd, reply, sizeof(*reply));
}
#endif /* __TURRIS_OMNIA_MCU_H */
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