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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 */
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/* Copyright (C) IBM Corporation 2023 */
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#ifndef DRIVERS_FSI_MASTER_I2CR_H
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#define DRIVERS_FSI_MASTER_I2CR_H
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#include <linux/i2c.h>
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#include <linux/mutex.h>
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#include "fsi-master.h"
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struct i2c_client;
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struct fsi_master_i2cr {
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struct fsi_master master;
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struct mutex lock; /* protect HW access */
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struct i2c_client *client;
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};
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#define to_fsi_master_i2cr(m) container_of(m, struct fsi_master_i2cr, master)
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int fsi_master_i2cr_read(struct fsi_master_i2cr *i2cr, u32 addr, u64 *data);
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int fsi_master_i2cr_write(struct fsi_master_i2cr *i2cr, u32 addr, u64 data);
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static inline bool is_fsi_master_i2cr(struct fsi_master *master)
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{
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if (master->dev.parent && master->dev.parent->type == &i2c_client_type)
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return true;
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return false;
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}
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#endif /* DRIVERS_FSI_MASTER_I2CR_H */
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