4  * SPDX-License-Identifier: Apache-2.0
26 	uint8_t *address;  member
30 static inline void zephyr_retained_mem_ram_lock_take(const struct device *dev)  in zephyr_retained_mem_ram_lock_take()
33 	struct zephyr_retained_mem_ram_data *data = dev->data;  in zephyr_retained_mem_ram_lock_take()
35 	k_mutex_lock(&data->lock, K_FOREVER);  in zephyr_retained_mem_ram_lock_take()
41 static inline void zephyr_retained_mem_ram_lock_release(const struct device *dev)  in zephyr_retained_mem_ram_lock_release()
44 	struct zephyr_retained_mem_ram_data *data = dev->data;  in zephyr_retained_mem_ram_lock_release()
46 	k_mutex_unlock(&data->lock);  in zephyr_retained_mem_ram_lock_release()
52 static int zephyr_retained_mem_ram_init(const struct device *dev)  in zephyr_retained_mem_ram_init()
55 	struct zephyr_retained_mem_ram_data *data = dev->data;  in zephyr_retained_mem_ram_init()
57 	k_mutex_init(&data->lock);  in zephyr_retained_mem_ram_init()
63 static ssize_t zephyr_retained_mem_ram_size(const struct device *dev)  in zephyr_retained_mem_ram_size()
65 	const struct zephyr_retained_mem_ram_config *config = dev->config;  in zephyr_retained_mem_ram_size()
67 	return (ssize_t)config->size;  in zephyr_retained_mem_ram_size()
70 static int zephyr_retained_mem_ram_read(const struct device *dev, off_t offset, uint8_t *buffer,  in zephyr_retained_mem_ram_read()
73 	const struct zephyr_retained_mem_ram_config *config = dev->config;  in zephyr_retained_mem_ram_read()
77 	memcpy(buffer, (config->address + offset), size);  in zephyr_retained_mem_ram_read()
84 static int zephyr_retained_mem_ram_write(const struct device *dev, off_t offset,  in zephyr_retained_mem_ram_write()
87 	const struct zephyr_retained_mem_ram_config *config = dev->config;  in zephyr_retained_mem_ram_write()
91 	memcpy((config->address + offset), buffer, size);  in zephyr_retained_mem_ram_write()
98 static int zephyr_retained_mem_ram_clear(const struct device *dev)  in zephyr_retained_mem_ram_clear()
100 	const struct zephyr_retained_mem_ram_config *config = dev->config;  in zephyr_retained_mem_ram_clear()
104 	memset(config->address, 0, config->size);  in zephyr_retained_mem_ram_clear()
111 static DEVICE_API(retained_mem, zephyr_retained_mem_ram_api) = {
120 		   (static struct zephyr_retained_mem_ram_data					\
123 	static const struct zephyr_retained_mem_ram_config					\
125 		.address = (uint8_t *)DT_REG_ADDR(DT_PARENT(DT_INST(inst, DT_DRV_COMPAT))),	\