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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2018 Cadence Design Systems Inc.
*
* Author: Boris Brezillon <boris.brezillon@bootlin.com>
*/
#ifndef I3C_INTERNALS_H
#define I3C_INTERNALS_H
#include <linux/i3c/master.h>
#include <linux/io.h>
void i3c_bus_normaluse_lock(struct i3c_bus *bus);
void i3c_bus_normaluse_unlock(struct i3c_bus *bus);
int i3c_dev_setdasa_locked(struct i3c_dev_desc *dev);
int i3c_dev_do_priv_xfers_locked(struct i3c_dev_desc *dev,
struct i3c_priv_xfer *xfers,
int nxfers);
int i3c_dev_disable_ibi_locked(struct i3c_dev_desc *dev);
int i3c_dev_enable_ibi_locked(struct i3c_dev_desc *dev);
int i3c_dev_request_ibi_locked(struct i3c_dev_desc *dev,
const struct i3c_ibi_setup *req);
void i3c_dev_free_ibi_locked(struct i3c_dev_desc *dev);
/**
* i3c_writel_fifo - Write data buffer to 32bit FIFO
* @addr: FIFO Address to write to
* @buf: Pointer to the data bytes to write
* @nbytes: Number of bytes to write
*/
static inline void i3c_writel_fifo(void __iomem *addr, const void *buf,
int nbytes)
{
writesl(addr, buf, nbytes / 4);
if (nbytes & 3) {
u32 tmp = 0;
memcpy(&tmp, buf + (nbytes & ~3), nbytes & 3);
writel(tmp, addr);
}
}
/**
* i3c_readl_fifo - Read data buffer from 32bit FIFO
* @addr: FIFO Address to read from
* @buf: Pointer to the buffer to store read bytes
* @nbytes: Number of bytes to read
*/
static inline void i3c_readl_fifo(const void __iomem *addr, void *buf,
int nbytes)
{
readsl(addr, buf, nbytes / 4);
if (nbytes & 3) {
u32 tmp;
tmp = readl(addr);
memcpy(buf + (nbytes & ~3), &tmp, nbytes & 3);
}
}
#endif /* I3C_INTERNAL_H */
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