// 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");