11  * SPDX-License-Identifier: Apache-2.0
31  * @brief  Finds receiver context which manages provided device.
33  * @param  dev: device used by the receiver context.
35  * @retval Receiver context or NULL.
42 		if (contexts[i] && contexts[i]->uart_dev == dev) {  in context_from_dev()
51  * @brief  Persists receiver context if there is a free place.
56  * @param  ctx: receiver context to persist.
71 	return -ENOMEM;  in mdm_receiver_get()
79  * @param  ctx: receiver context.
88 	__ASSERT(ctx->uart_dev, "invalid ctx device");  in mdm_receiver_flush()
90 	while (uart_fifo_read(ctx->uart_dev, &c, 1) > 0) {  in mdm_receiver_flush()
98  * @note   Fills contexts ring buffer with received data.
99  *         When ring buffer is full the data is discarded.
120 	while (uart_irq_update(ctx->uart_dev) &&  in mdm_receiver_isr()
121 	       uart_irq_rx_ready(ctx->uart_dev)) {  in mdm_receiver_isr()
122 		rx = uart_fifo_read(ctx->uart_dev, read_buf, sizeof(read_buf));  in mdm_receiver_isr()
124 			ret = ring_buf_put(&ctx->rx_rb, read_buf, rx);  in mdm_receiver_isr()
126 				LOG_ERR("Rx buffer doesn't have enough space. "  in mdm_receiver_isr()
130 				k_sem_give(&ctx->rx_sem);  in mdm_receiver_isr()
133 			k_sem_give(&ctx->rx_sem);  in mdm_receiver_isr()
139  * @brief  Configures receiver context and assigned device.
141  * @param  ctx: receiver context.
149 	uart_irq_rx_disable(ctx->uart_dev);  in mdm_receiver_setup()
150 	uart_irq_tx_disable(ctx->uart_dev);  in mdm_receiver_setup()
152 	uart_irq_callback_set(ctx->uart_dev, mdm_receiver_isr);  in mdm_receiver_setup()
153 	uart_irq_rx_enable(ctx->uart_dev);  in mdm_receiver_setup()
166 		      uint8_t *buf, size_t size, size_t *bytes_read)  in mdm_receiver_recv()  argument
169 		return -EINVAL;  in mdm_receiver_recv()
172 	if (size == 0) {  in mdm_receiver_recv()
177 	*bytes_read = ring_buf_get(&ctx->rx_rb, buf, size);  in mdm_receiver_recv()
182 		      const uint8_t *buf, size_t size)  in mdm_receiver_send()  argument
185 		return -EINVAL;  in mdm_receiver_send()
188 	if (size == 0) {  in mdm_receiver_send()
193 		uart_poll_out(ctx->uart_dev, *buf++);  in mdm_receiver_send()
194 	} while (--size);  in mdm_receiver_send()
201 	uart_irq_rx_disable(ctx->uart_dev);  in mdm_receiver_sleep()
203 	pm_device_action_run(ctx->uart_dev, PM_DEVICE_ACTION_SUSPEND);  in mdm_receiver_sleep()
211 	pm_device_action_run(ctx->uart_dev, PM_DEVICE_ACTION_RESUME);  in mdm_receiver_wake()
213 	uart_irq_rx_enable(ctx->uart_dev);  in mdm_receiver_wake()
220 			  uint8_t *buf, size_t size)  in mdm_receiver_register()  argument
224 	if ((!ctx) || (size == 0)) {  in mdm_receiver_register()
225 		return -EINVAL;  in mdm_receiver_register()
230 			uart_dev ? uart_dev->name : "<null>");  in mdm_receiver_register()
231 		return -ENODEV;  in mdm_receiver_register()
234 	ctx->uart_dev = uart_dev;  in mdm_receiver_register()
235 	ring_buf_init(&ctx->rx_rb, size, buf);  in mdm_receiver_register()
236 	k_sem_init(&ctx->rx_sem, 0, 1);  in mdm_receiver_register()