30 	receive_rb = &backend->isr.receive_rdb[backend->isr.receive_rdb_used];  in modem_backend_uart_isr_irq_handler_receive_ready()
71 	if (ring_buf_is_empty(&backend->isr.transmit_rb) == true) {  in modem_backend_uart_isr_irq_handler_transmit_ready()
77 	size = ring_buf_get_claim(&backend->isr.transmit_rb, &buffer, UINT32_MAX);  in modem_backend_uart_isr_irq_handler_transmit_ready()
80 		ring_buf_get_finish(&backend->isr.transmit_rb, 0);  in modem_backend_uart_isr_irq_handler_transmit_ready()
82 		ring_buf_get_finish(&backend->isr.transmit_rb, (uint32_t)ret);  in modem_backend_uart_isr_irq_handler_transmit_ready()
85 		atomic_sub(&backend->isr.transmit_buf_len, (uint32_t)ret);  in modem_backend_uart_isr_irq_handler_transmit_ready()
110 	ring_buf_reset(&backend->isr.receive_rdb[0]);  in modem_backend_uart_isr_open()
111 	ring_buf_reset(&backend->isr.receive_rdb[1]);  in modem_backend_uart_isr_open()
112 	ring_buf_reset(&backend->isr.transmit_rb);  in modem_backend_uart_isr_open()
113 	atomic_set(&backend->isr.transmit_buf_len, 0);  in modem_backend_uart_isr_open()
123 	return atomic_get(&backend->isr.transmit_buf_len);  in get_transmit_buf_length()
129 	return ring_buf_size_get(&backend->isr.receive_rdb[0]) +  in get_receive_buf_length()
130 	       ring_buf_size_get(&backend->isr.receive_rdb[1]);  in get_receive_buf_length()
135 	return ring_buf_capacity_get(&backend->isr.receive_rdb[0]) +  in get_receive_buf_size()
136 	       ring_buf_capacity_get(&backend->isr.receive_rdb[1]);  in get_receive_buf_size()
141 	return ring_buf_capacity_get(&backend->isr.transmit_rb);  in get_transmit_buf_size()
165 	return backend->isr.transmit_buf_put_limit < get_transmit_buf_length(backend);  in modem_backend_uart_isr_transmit_buf_above_limit()
178 	written = ring_buf_put(&backend->isr.transmit_rb, buf, size);  in modem_backend_uart_isr_transmit()
182 	atomic_add(&backend->isr.transmit_buf_len, written);  in modem_backend_uart_isr_transmit()
203 	receive_rdb_unused = (backend->isr.receive_rdb_used == 1) ? 0 : 1;  in modem_backend_uart_isr_receive()
206 	read_bytes += ring_buf_get(&backend->isr.receive_rdb[receive_rdb_unused], buf, size);  in modem_backend_uart_isr_receive()
208 	if (ring_buf_is_empty(&backend->isr.receive_rdb[receive_rdb_unused]) == false) {  in modem_backend_uart_isr_receive()
214 	backend->isr.receive_rdb_used = receive_rdb_unused;  in modem_backend_uart_isr_receive()
218 	receive_rdb_unused = (backend->isr.receive_rdb_used == 1) ? 0 : 1;  in modem_backend_uart_isr_receive()
220 	read_bytes += ring_buf_get(&backend->isr.receive_rdb[receive_rdb_unused],  in modem_backend_uart_isr_receive()
265 	backend->isr.transmit_buf_put_limit =  in modem_backend_uart_isr_init()
270 	ring_buf_init(&backend->isr.receive_rdb[0], receive_double_buf_size,  in modem_backend_uart_isr_init()
273 	ring_buf_init(&backend->isr.receive_rdb[1], receive_double_buf_size,  in modem_backend_uart_isr_init()
276 	ring_buf_init(&backend->isr.transmit_rb, config->transmit_buf_size,  in modem_backend_uart_isr_init()
279 	atomic_set(&backend->isr.transmit_buf_len, 0);  in modem_backend_uart_isr_init()