183         outb(0x81, LCR(dev->base_addr));        /* DLAB = 1 */  in ser12_set_divisor()
184         outb(divisor, DLL(dev->base_addr));  in ser12_set_divisor()
185         outb(divisor >> 8, DLM(dev->base_addr));  in ser12_set_divisor()
186         outb(0x01, LCR(dev->base_addr));        /* word length = 6 */  in ser12_set_divisor()
192         outb(0x00, THR(dev->base_addr));  in ser12_set_divisor()
293 	if ((iir = inb(IIR(dev->base_addr))) & 1) 	  in ser12_interrupt()
297 	msr = inb(MSR(dev->base_addr));  in ser12_interrupt()
304 			inb(LSR(dev->base_addr));  in ser12_interrupt()
308 			inb(RBR(dev->base_addr));  in ser12_interrupt()
317 			outb(0x00, THR(dev->base_addr));  in ser12_interrupt()
325 				outb(0x0e | (!!bc->modem.ser12.tx_bit), MCR(dev->base_addr));  in ser12_interrupt()
327 				outb(0x0d, MCR(dev->base_addr));       /* transmitter off */  in ser12_interrupt()
331 			msr = inb(MSR(dev->base_addr));  in ser12_interrupt()
337 		iir = inb(IIR(dev->base_addr));  in ser12_interrupt()
415 	if (!dev->base_addr || dev->base_addr > 0x1000-SER12_EXTENT ||  in ser12_open()
420 	if (!request_region(dev->base_addr, SER12_EXTENT, "baycom_ser_fdx")) {  in ser12_open()
422 		       dev->base_addr);  in ser12_open()
429 	if ((u = ser12_check_uart(dev->base_addr)) == c_uart_unknown){  in ser12_open()
430 		release_region(dev->base_addr, SER12_EXTENT);  in ser12_open()
433 	outb(0, FCR(dev->base_addr));  /* disable FIFOs */  in ser12_open()
434 	outb(0x0d, MCR(dev->base_addr));  in ser12_open()
435 	outb(0, IER(dev->base_addr));  in ser12_open()
438 		release_region(dev->base_addr, SER12_EXTENT);  in ser12_open()
452 	outb(0x0a, IER(dev->base_addr));  in ser12_open()
458 	outb(0x00, THR(dev->base_addr));  in ser12_open()
461 	       bc_drvname, dev->base_addr, dev->irq, bc->baud, uart_str[u]);  in ser12_open()
477 	outb(0, IER(dev->base_addr));  in ser12_close()
478 	outb(1, MCR(dev->base_addr));  in ser12_close()
480 	release_region(dev->base_addr, SER12_EXTENT);  in ser12_close()
482 	       bc_drvname, dev->base_addr, dev->irq);  in ser12_close()