drivers/fsi/fsi-master-i2cr.h

   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
  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 */