From: Mathieu OTHACEHE Date: Wed, 24 Feb 2016 19:10:22 +0000 (+0100) Subject: tty: serial: 8250: add MOXA Smartio MUE boards support X-Git-Tag: v4.14-rc1~3636^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c216c4ad592e30342ab55aface6f928ac16412db;p=platform%2Fkernel%2Flinux-rpi.git tty: serial: 8250: add MOXA Smartio MUE boards support Add support for : - CP-102E: 2 ports RS232 PCIE card - CP-102EL: 2 ports RS232 PCIE card - CP-132EL: 2 ports RS422/485 PCIE card - CP-114EL: 4 ports RS232/422/485 PCIE card - CP-104EL-A: 4 ports RS232 PCIE card - CP-168EL-A: 8 ports RS232 PCIE card - CP-118EL-A: 8 ports RS232/422/485 PCIE card - CP-118E-A: 8 ports RS422/485 PCIE card - CP-138E-A: 8 ports RS422/485 PCIE card - CP-134EL-A: 4 ports RS422/485 PCIE card - CP-116E-A (A): 8 ports RS232/422/485 PCIE card - CP-116E-A (B): 8 ports RS232/422/485 PCIE card This patch is based on information extracted from vendor mxupcie driver available on MOXA website. I was able to test it on a CP-168EL-A on PC. Signed-off-by: Mathieu OTHACEHE Reviewed-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/8250/8250_moxa.c b/drivers/tty/serial/8250/8250_moxa.c new file mode 100644 index 0000000..26eb539 --- /dev/null +++ b/drivers/tty/serial/8250/8250_moxa.c @@ -0,0 +1,157 @@ +/* + * 8250_moxa.c - MOXA Smartio/Industio MUE multiport serial driver. + * + * Author: Mathieu OTHACEHE + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include + +#include "8250.h" + +#define PCI_DEVICE_ID_MOXA_CP102E 0x1024 +#define PCI_DEVICE_ID_MOXA_CP102EL 0x1025 +#define PCI_DEVICE_ID_MOXA_CP104EL_A 0x1045 +#define PCI_DEVICE_ID_MOXA_CP114EL 0x1144 +#define PCI_DEVICE_ID_MOXA_CP116E_A_A 0x1160 +#define PCI_DEVICE_ID_MOXA_CP116E_A_B 0x1161 +#define PCI_DEVICE_ID_MOXA_CP118EL_A 0x1182 +#define PCI_DEVICE_ID_MOXA_CP118E_A_I 0x1183 +#define PCI_DEVICE_ID_MOXA_CP132EL 0x1322 +#define PCI_DEVICE_ID_MOXA_CP134EL_A 0x1342 +#define PCI_DEVICE_ID_MOXA_CP138E_A 0x1381 +#define PCI_DEVICE_ID_MOXA_CP168EL_A 0x1683 + +#define MOXA_BASE_BAUD 921600 +#define MOXA_UART_OFFSET 0x200 +#define MOXA_BASE_BAR 1 + +struct moxa8250_board { + unsigned int num_ports; + int line[0]; +}; + +enum { + moxa8250_2p = 0, + moxa8250_4p, + moxa8250_8p +}; + +static struct moxa8250_board moxa8250_boards[] = { + [moxa8250_2p] = { .num_ports = 2}, + [moxa8250_4p] = { .num_ports = 4}, + [moxa8250_8p] = { .num_ports = 8}, +}; + +static int moxa8250_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct uart_8250_port uart; + struct moxa8250_board *brd; + void __iomem *ioaddr; + resource_size_t baseaddr; + unsigned int i, nr_ports; + unsigned int offset; + int ret; + + brd = &moxa8250_boards[id->driver_data]; + nr_ports = brd->num_ports; + + ret = pcim_enable_device(pdev); + if (ret) + return ret; + + brd = devm_kzalloc(&pdev->dev, sizeof(struct moxa8250_board) + + sizeof(unsigned int) * nr_ports, GFP_KERNEL); + if (!brd) + return -ENOMEM; + + memset(&uart, 0, sizeof(struct uart_8250_port)); + + uart.port.dev = &pdev->dev; + uart.port.irq = pdev->irq; + uart.port.uartclk = MOXA_BASE_BAUD * 16; + uart.port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ; + + baseaddr = pci_resource_start(pdev, MOXA_BASE_BAR); + ioaddr = pcim_iomap(pdev, MOXA_BASE_BAR, 0); + if (!ioaddr) + return -ENOMEM; + + for (i = 0; i < nr_ports; i++) { + + /* + * MOXA Smartio MUE boards with 4 ports have + * a different offset for port #3 + */ + if (nr_ports == 4 && i == 3) + offset = 7 * MOXA_UART_OFFSET; + else + offset = i * MOXA_UART_OFFSET; + + uart.port.iotype = UPIO_MEM; + uart.port.iobase = 0; + uart.port.mapbase = baseaddr + offset; + uart.port.membase = ioaddr + offset; + uart.port.regshift = 0; + + dev_dbg(&pdev->dev, "Setup PCI port: port %lx, irq %d, type %d\n", + uart.port.iobase, uart.port.irq, uart.port.iotype); + + brd->line[i] = serial8250_register_8250_port(&uart); + if (brd->line[i] < 0) { + dev_err(&pdev->dev, + "Couldn't register serial port %lx, irq %d, type %d, error %d\n", + uart.port.iobase, uart.port.irq, + uart.port.iotype, brd->line[i]); + break; + } + } + + pci_set_drvdata(pdev, brd); + return 0; +} + +static void moxa8250_remove(struct pci_dev *pdev) +{ + struct moxa8250_board *brd = pci_get_drvdata(pdev); + unsigned int i; + + for (i = 0; i < brd->num_ports; i++) + serial8250_unregister_port(brd->line[i]); +} + +#define MOXA_DEVICE(id, data) { PCI_VDEVICE(MOXA, id), (kernel_ulong_t)data } + +static const struct pci_device_id pci_ids[] = { + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP102E, moxa8250_2p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP102EL, moxa8250_2p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP104EL_A, moxa8250_4p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP114EL, moxa8250_4p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP116E_A_A, moxa8250_8p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP116E_A_B, moxa8250_8p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP118EL_A, moxa8250_8p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP118E_A_I, moxa8250_8p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP132EL, moxa8250_2p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP134EL_A, moxa8250_4p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP138E_A, moxa8250_8p), + MOXA_DEVICE(PCI_DEVICE_ID_MOXA_CP168EL_A, moxa8250_8p), + {0} +}; +MODULE_DEVICE_TABLE(pci, pci_ids); + +static struct pci_driver moxa8250_pci_driver = { + .name = "8250_moxa", + .id_table = pci_ids, + .probe = moxa8250_probe, + .remove = moxa8250_remove, +}; + +module_pci_driver(moxa8250_pci_driver); + +MODULE_AUTHOR("Mathieu OTHACEHE"); +MODULE_DESCRIPTION("MOXA SmartIO MUE driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index fb64c74..98862aa 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -3800,6 +3800,20 @@ static const struct pci_device_id blacklist[] = { { PCI_DEVICE(0x1c00, 0x3250), }, /* WCH CH382 2S1P */ { PCI_DEVICE(0x1c00, 0x3470), }, /* WCH CH384 4S */ + /* Moxa Smartio MUE boards handled by 8250_moxa */ + { PCI_VDEVICE(MOXA, 0x1024), }, + { PCI_VDEVICE(MOXA, 0x1025), }, + { PCI_VDEVICE(MOXA, 0x1045), }, + { PCI_VDEVICE(MOXA, 0x1144), }, + { PCI_VDEVICE(MOXA, 0x1160), }, + { PCI_VDEVICE(MOXA, 0x1161), }, + { PCI_VDEVICE(MOXA, 0x1182), }, + { PCI_VDEVICE(MOXA, 0x1183), }, + { PCI_VDEVICE(MOXA, 0x1322), }, + { PCI_VDEVICE(MOXA, 0x1342), }, + { PCI_VDEVICE(MOXA, 0x1381), }, + { PCI_VDEVICE(MOXA, 0x1683), }, + /* Intel platforms with MID UART */ { PCI_VDEVICE(INTEL, 0x081b), }, { PCI_VDEVICE(INTEL, 0x081c), }, diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig index bb1b95a..6d20600 100644 --- a/drivers/tty/serial/8250/Kconfig +++ b/drivers/tty/serial/8250/Kconfig @@ -404,6 +404,16 @@ config SERIAL_8250_MID present on the UART found on Intel Medfield SOC and various other Intel platforms. +config SERIAL_8250_MOXA + tristate "MOXA SmartIO MUE support" + depends on SERIAL_8250 && PCI + help + Say Y here if you have a Moxa SmartIO MUE multiport serial card. + If unsure, say N. + + This driver can also be built as a module. The module will be called + 8250_moxa. If you want to do that, say M here. + config SERIAL_OF_PLATFORM tristate "Devicetree based probing for 8250 ports" depends on SERIAL_8250 && OF diff --git a/drivers/tty/serial/8250/Makefile b/drivers/tty/serial/8250/Makefile index 5c1869f..c9a2d6e 100644 --- a/drivers/tty/serial/8250/Makefile +++ b/drivers/tty/serial/8250/Makefile @@ -29,6 +29,7 @@ obj-$(CONFIG_SERIAL_8250_MT6577) += 8250_mtk.o obj-$(CONFIG_SERIAL_8250_UNIPHIER) += 8250_uniphier.o obj-$(CONFIG_SERIAL_8250_INGENIC) += 8250_ingenic.o obj-$(CONFIG_SERIAL_8250_MID) += 8250_mid.o +obj-$(CONFIG_SERIAL_8250_MOXA) += 8250_moxa.o obj-$(CONFIG_SERIAL_OF_PLATFORM) += 8250_of.o CFLAGS_8250_ingenic.o += -I$(srctree)/scripts/dtc/libfdt