mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-14 06:24:53 +08:00
53e89e3e44
The I2C Responder (I2CR) is an I2C device that translates I2C commands to CFAM or SCOM operations, effectively implementing an FSI master and bus. Signed-off-by: Eddie James <eajames@linux.ibm.com> Link: https://lore.kernel.org/r/20230612195657.245125-14-eajames@linux.ibm.com Signed-off-by: Joel Stanley <joel@jms.id.au>
34 lines
824 B
C
34 lines
824 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/* Copyright (C) IBM Corporation 2023 */
|
|
|
|
#ifndef DRIVERS_FSI_MASTER_I2CR_H
|
|
#define DRIVERS_FSI_MASTER_I2CR_H
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/mutex.h>
|
|
|
|
#include "fsi-master.h"
|
|
|
|
struct i2c_client;
|
|
|
|
struct fsi_master_i2cr {
|
|
struct fsi_master master;
|
|
struct mutex lock; /* protect HW access */
|
|
struct i2c_client *client;
|
|
};
|
|
|
|
#define to_fsi_master_i2cr(m) container_of(m, struct fsi_master_i2cr, master)
|
|
|
|
int fsi_master_i2cr_read(struct fsi_master_i2cr *i2cr, u32 addr, u64 *data);
|
|
int fsi_master_i2cr_write(struct fsi_master_i2cr *i2cr, u32 addr, u64 data);
|
|
|
|
static inline bool is_fsi_master_i2cr(struct fsi_master *master)
|
|
{
|
|
if (master->dev.parent && master->dev.parent->type == &i2c_client_type)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
#endif /* DRIVERS_FSI_MASTER_I2CR_H */
|