5  * SPDX-License-Identifier: Apache-2.0
27 	uint8_t *address;  member
31 static inline void zephyr_retained_mem_reg_lock_take(const struct device *dev)  in zephyr_retained_mem_reg_lock_take()
34 	struct zephyr_retained_mem_reg_data *data = dev->data;  in zephyr_retained_mem_reg_lock_take()
36 	k_mutex_lock(&data->lock, K_FOREVER);  in zephyr_retained_mem_reg_lock_take()
42 static inline void zephyr_retained_mem_reg_lock_release(const struct device *dev)  in zephyr_retained_mem_reg_lock_release()
45 	struct zephyr_retained_mem_reg_data *data = dev->data;  in zephyr_retained_mem_reg_lock_release()
47 	k_mutex_unlock(&data->lock);  in zephyr_retained_mem_reg_lock_release()
53 static int zephyr_retained_mem_reg_init(const struct device *dev)  in zephyr_retained_mem_reg_init()
56 	struct zephyr_retained_mem_reg_data *data = dev->data;  in zephyr_retained_mem_reg_init()
58 	k_mutex_init(&data->lock);  in zephyr_retained_mem_reg_init()
64 static ssize_t zephyr_retained_mem_reg_size(const struct device *dev)  in zephyr_retained_mem_reg_size()
66 	const struct zephyr_retained_mem_reg_config *config = dev->config;  in zephyr_retained_mem_reg_size()
68 	return (ssize_t)config->size;  in zephyr_retained_mem_reg_size()
71 static int zephyr_retained_mem_reg_read(const struct device *dev, off_t offset, uint8_t *buffer,  in zephyr_retained_mem_reg_read()
74 	const struct zephyr_retained_mem_reg_config *config = dev->config;  in zephyr_retained_mem_reg_read()
78 	memcpy(buffer, (config->address + offset), size);  in zephyr_retained_mem_reg_read()
85 static int zephyr_retained_mem_reg_write(const struct device *dev, off_t offset,  in zephyr_retained_mem_reg_write()
88 	const struct zephyr_retained_mem_reg_config *config = dev->config;  in zephyr_retained_mem_reg_write()
92 	memcpy((config->address + offset), buffer, size);  in zephyr_retained_mem_reg_write()
99 static int zephyr_retained_mem_reg_clear(const struct device *dev)  in zephyr_retained_mem_reg_clear()
101 	const struct zephyr_retained_mem_reg_config *config = dev->config;  in zephyr_retained_mem_reg_clear()
105 	memset(config->address, 0, config->size);  in zephyr_retained_mem_reg_clear()
112 static DEVICE_API(retained_mem, zephyr_retained_mem_reg_api) = {
120 	static struct zephyr_retained_mem_reg_data zephyr_retained_mem_reg_data_##inst;		\
121 	static const struct zephyr_retained_mem_reg_config					\
123 		.address = (uint8_t *)DT_INST_REG_ADDR(inst),					\