xref: /openbmc/linux/drivers/fsi/fsi-master-i2cr.h (revision 53e89e3e)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Copyright (C) IBM Corporation 2023 */
3 
4 #ifndef DRIVERS_FSI_MASTER_I2CR_H
5 #define DRIVERS_FSI_MASTER_I2CR_H
6 
7 #include <linux/i2c.h>
8 #include <linux/mutex.h>
9 
10 #include "fsi-master.h"
11 
12 struct i2c_client;
13 
14 struct fsi_master_i2cr {
15 	struct fsi_master master;
16 	struct mutex lock;	/* protect HW access */
17 	struct i2c_client *client;
18 };
19 
20 #define to_fsi_master_i2cr(m)	container_of(m, struct fsi_master_i2cr, master)
21 
22 int fsi_master_i2cr_read(struct fsi_master_i2cr *i2cr, u32 addr, u64 *data);
23 int fsi_master_i2cr_write(struct fsi_master_i2cr *i2cr, u32 addr, u64 data);
24 
is_fsi_master_i2cr(struct fsi_master * master)25 static inline bool is_fsi_master_i2cr(struct fsi_master *master)
26 {
27 	if (master->dev.parent && master->dev.parent->type == &i2c_client_type)
28 		return true;
29 
30 	return false;
31 }
32 
33 #endif /* DRIVERS_FSI_MASTER_I2CR_H */
34