Lines Matching +full:auto +full:- +full:baud
1 // SPDX-License-Identifier: GPL-2.0
3 * Probe module for 8250/16550-type Exar chips PCI serial ports.
53 #define UART_FCTR_EXAR_485 0x20 /* Auto 485 half duplex dir ctl */
59 #define UART_EXAR_TXTRG 0x0a /* Tx FIFO trigger level write-only */
60 #define UART_EXAR_RXTRG 0x0b /* Rx FIFO trigger level write-only */
81 * ---- ---- --------
85 * 3 - <reserved>
89 * 7 - <reserved>
92 * 10 - Red LED
93 * 11..15 - <unused>
121 * struct exar8250_board - board information
124 * @setup: quirk run at ->probe() stage
125 * @exit: quirk run at ->remove() stage
155 * Calculate divisor with extra 4-bit fractional portion
157 static unsigned int xr17v35x_get_divisor(struct uart_port *p, unsigned int baud, in xr17v35x_get_divisor() argument
162 quot_16 = DIV_ROUND_CLOSEST(p->uartclk, baud); in xr17v35x_get_divisor()
168 static void xr17v35x_set_divisor(struct uart_port *p, unsigned int baud, in xr17v35x_set_divisor() argument
171 serial8250_do_set_divisor(p, baud, quot, quot_frac); in xr17v35x_set_divisor()
200 struct circ_buf *xmit = &port->state->xmit; in exar_shutdown()
219 const struct exar8250_board *board = priv->board; in default_setup()
223 port->port.iotype = UPIO_MEM; in default_setup()
224 port->port.mapbase = pci_resource_start(pcidev, bar) + offset; in default_setup()
225 port->port.membase = priv->virt + offset; in default_setup()
226 port->port.regshift = board->reg_shift; in default_setup()
235 status = readb(port->port.membase + UART_EXAR_DVID); in default_setup()
237 port->port.type = PORT_XR17V35X; in default_setup()
239 port->port.get_divisor = xr17v35x_get_divisor; in default_setup()
240 port->port.set_divisor = xr17v35x_set_divisor; in default_setup()
242 port->port.startup = xr17v35x_startup; in default_setup()
244 port->port.type = PORT_XR17D15X; in default_setup()
247 port->port.pm = exar_pm; in default_setup()
248 port->port.shutdown = exar_shutdown; in default_setup()
258 unsigned int baud = 1843200; in pci_fastcom335_setup() local
262 port->port.uartclk = baud * 16; in pci_fastcom335_setup()
268 p = port->port.membase; in pci_fastcom335_setup()
279 switch (pcidev->device) { in pci_fastcom335_setup()
306 unsigned int baud = 1843200; in pci_connect_tech_setup() local
308 port->port.uartclk = baud * 16; in pci_connect_tech_setup()
317 unsigned int baud = 921600; in pci_xr17c154_setup() local
319 port->port.uartclk = baud * 16; in pci_xr17c154_setup()
327 * devices will export them as GPIOs, so we pre-configure them safely in setup_gpio()
333 if ((pcidev->vendor == PCI_VENDOR_ID_EXAR) && in setup_gpio()
334 (pcidev->subsystem_vendor != PCI_VENDOR_ID_SEALEVEL)) { in setup_gpio()
365 pdev->dev.parent = &pcidev->dev; in __xr17v35x_register_gpio()
366 ACPI_COMPANION_SET(&pdev->dev, ACPI_COMPANION(&pcidev->dev)); in __xr17v35x_register_gpio()
368 if (device_add_software_node(&pdev->dev, node) < 0 || in __xr17v35x_register_gpio()
379 device_remove_software_node(&pdev->dev); in __xr17v35x_unregister_gpio()
384 PROPERTY_ENTRY_U32("exar,first-pin", 0),
395 if (pcidev->vendor == PCI_VENDOR_ID_EXAR) in xr17v35x_register_gpio()
396 port->port.private_data = in xr17v35x_register_gpio()
404 if (!port->port.private_data) in xr17v35x_unregister_gpio()
407 __xr17v35x_unregister_gpio(port->port.private_data); in xr17v35x_unregister_gpio()
408 port->port.private_data = NULL; in xr17v35x_unregister_gpio()
414 bool is_rs485 = !!(rs485->flags & SER_RS485_ENABLED); in generic_rs485_config()
415 u8 __iomem *p = port->membase; in generic_rs485_config()
429 port->rs485 = *rs485; in generic_rs485_config()
443 bool is_rs485 = !!(rs485->flags & SER_RS485_ENABLED); in iot2040_rs485_config()
444 u8 __iomem *p = port->membase; in iot2040_rs485_config()
449 if (rs485->flags & SER_RS485_RX_DURING_TX) in iot2040_rs485_config()
454 if (rs485->flags & SER_RS485_TERMINATE_BUS) in iot2040_rs485_config()
460 if (port->line == 3) { in iot2040_rs485_config()
474 PROPERTY_ENTRY_U32("exar,first-pin", 10),
486 u8 __iomem *p = port->port.membase; in iot2040_register_gpio()
493 port->port.private_data = in iot2040_register_gpio()
526 return dmi_match->driver_data; in exar_get_platform()
537 unsigned int baud = 7812500; in pci_xr17v35x_setup() local
541 port->port.uartclk = baud * 16; in pci_xr17v35x_setup()
542 port->port.rs485_config = platform->rs485_config; in pci_xr17v35x_setup()
549 port->port.uartclk /= 2; in pci_xr17v35x_setup()
555 p = port->port.membase; in pci_xr17v35x_setup()
566 ret = platform->register_gpio(pcidev, port); in pci_xr17v35x_setup()
576 struct uart_8250_port *port = serial8250_get_port(priv->line[0]); in pci_xr17v35x_exit()
578 platform->unregister_gpio(port); in pci_xr17v35x_exit()
584 readb(priv->virt + UART_EXAR_INT0); in exar_misc_clear()
587 if (priv->board->num_ports > 8) in exar_misc_clear()
588 readb(priv->virt + 0x2000 + UART_EXAR_INT0); in exar_misc_clear()
616 board = (struct exar8250_board *)ent->driver_data; in exar_pci_probe()
618 return -EINVAL; in exar_pci_probe()
624 maxnr = pci_resource_len(pcidev, bar) >> (board->reg_shift + 3); in exar_pci_probe()
626 nr_ports = board->num_ports ? board->num_ports : pcidev->device & 0x0f; in exar_pci_probe()
628 priv = devm_kzalloc(&pcidev->dev, struct_size(priv, line, nr_ports), GFP_KERNEL); in exar_pci_probe()
630 return -ENOMEM; in exar_pci_probe()
632 priv->board = board; in exar_pci_probe()
633 priv->virt = pcim_iomap(pcidev, bar, 0); in exar_pci_probe()
634 if (!priv->virt) in exar_pci_probe()
635 return -ENOMEM; in exar_pci_probe()
646 uart.port.dev = &pcidev->dev; in exar_pci_probe()
648 rc = devm_request_irq(&pcidev->dev, uart.port.irq, exar_misc_handler, in exar_pci_probe()
657 rc = board->setup(priv, pcidev, &uart, i); in exar_pci_probe()
659 dev_err(&pcidev->dev, "Failed to setup port %u\n", i); in exar_pci_probe()
663 dev_dbg(&pcidev->dev, "Setup PCI port: port %lx, irq %d, type %d\n", in exar_pci_probe()
666 priv->line[i] = serial8250_register_8250_port(&uart); in exar_pci_probe()
667 if (priv->line[i] < 0) { in exar_pci_probe()
668 dev_err(&pcidev->dev, in exar_pci_probe()
671 uart.port.iotype, priv->line[i]); in exar_pci_probe()
675 priv->nr = i; in exar_pci_probe()
685 for (i = 0; i < priv->nr; i++) in exar_pci_remove()
686 serial8250_unregister_port(priv->line[i]); in exar_pci_remove()
688 if (priv->board->exit) in exar_pci_remove()
689 priv->board->exit(pcidev); in exar_pci_remove()
698 for (i = 0; i < priv->nr; i++) in exar_suspend()
699 if (priv->line[i] >= 0) in exar_suspend()
700 serial8250_suspend_port(priv->line[i]); in exar_suspend()
703 if (priv->board->exit) in exar_suspend()
704 priv->board->exit(pcidev); in exar_suspend()
716 for (i = 0; i < priv->nr; i++) in exar_resume()
717 if (priv->line[i] >= 0) in exar_resume()
718 serial8250_resume_port(priv->line[i]); in exar_resume()