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// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2018 Synopsys, Inc. and/or its affiliates.
#include <linux/regmap.h>
#include <linux/i3c/device.h>
#include <linux/i3c/master.h>
#include <linux/module.h>
static int regmap_i3c_write(void *context, const void *data, size_t count)
{
struct device *dev = context;
struct i3c_device *i3c = dev_to_i3cdev(dev);
struct i3c_priv_xfer xfers[] = {
{
.rnw = false,
.len = count,
.data.out = data,
},
};
return i3c_device_do_priv_xfers(i3c, xfers, 1);
}
static int regmap_i3c_read(void *context,
const void *reg, size_t reg_size,
void *val, size_t val_size)
{
struct device *dev = context;
struct i3c_device *i3c = dev_to_i3cdev(dev);
struct i3c_priv_xfer xfers[2];
xfers[0].rnw = false;
xfers[0].len = reg_size;
xfers[0].data.out = reg;
xfers[1].rnw = true;
xfers[1].len = val_size;
xfers[1].data.in = val;
return i3c_device_do_priv_xfers(i3c, xfers, 2);
}
static const struct regmap_bus regmap_i3c = {
.write = regmap_i3c_write,
.read = regmap_i3c_read,
};
struct regmap *__devm_regmap_init_i3c(struct i3c_device *i3c,
const struct regmap_config *config,
struct lock_class_key *lock_key,
const char *lock_name)
{
return __devm_regmap_init(&i3c->dev, ®map_i3c, &i3c->dev, config,
lock_key, lock_name);
}
EXPORT_SYMBOL_GPL(__devm_regmap_init_i3c);
MODULE_AUTHOR("Vitor Soares <vitor.soares@synopsys.com>");
MODULE_DESCRIPTION("Regmap I3C Module");
MODULE_LICENSE("GPL v2");
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