diff options
Diffstat (limited to 'drivers/tty/serial/8250')
-rw-r--r-- | drivers/tty/serial/8250/8250_aspeed_vuart.c | 6 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_bcm2835aux.c | 50 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_core.c | 6 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_exar.c | 39 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_fsl.c | 4 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_gsc.c | 2 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_ioc3.c | 98 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_of.c | 5 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_omap.c | 7 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_pci.c | 6 | ||||
-rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 14 | ||||
-rw-r--r-- | drivers/tty/serial/8250/Kconfig | 21 | ||||
-rw-r--r-- | drivers/tty/serial/8250/Makefile | 1 |
13 files changed, 204 insertions, 55 deletions
diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c b/drivers/tty/serial/8250/8250_aspeed_vuart.c index 6e67fd89445a..c33e02cbde93 100644 --- a/drivers/tty/serial/8250/8250_aspeed_vuart.c +++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c @@ -5,10 +5,6 @@ * Copyright (C) 2016 Jeremy Kerr <jk@ozlabs.org>, IBM Corp. * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>, IBM Corp. */ -#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) -#define SUPPORT_SYSRQ -#endif - #include <linux/device.h> #include <linux/module.h> #include <linux/of_address.h> @@ -406,6 +402,7 @@ static int aspeed_vuart_probe(struct platform_device *pdev) port.port.unthrottle = aspeed_vuart_unthrottle; port.port.status = UPSTAT_SYNC_FIFO; port.port.dev = &pdev->dev; + port.port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_8250_CONSOLE); rc = sysfs_create_group(&vuart->dev->kobj, &aspeed_vuart_attr_group); if (rc < 0) @@ -449,7 +446,6 @@ static int aspeed_vuart_probe(struct platform_device *pdev) port.port.line = rc; port.port.irq = irq_of_parse_and_map(np, 0); - port.port.irqflags = IRQF_SHARED; port.port.handle_irq = aspeed_vuart_handle_irq; port.port.iotype = UPIO_MEM; port.port.type = PORT_16550A; diff --git a/drivers/tty/serial/8250/8250_bcm2835aux.c b/drivers/tty/serial/8250/8250_bcm2835aux.c index 8ce700c1a7fc..e70e3cc30050 100644 --- a/drivers/tty/serial/8250/8250_bcm2835aux.c +++ b/drivers/tty/serial/8250/8250_bcm2835aux.c @@ -16,14 +16,19 @@ #include "8250.h" +/** + * struct bcm2835aux_data - driver private data of BCM2835 auxiliary UART + * @clk: clock producer of the port's uartclk + * @line: index of the port's serial8250_ports[] entry + */ struct bcm2835aux_data { - struct uart_8250_port uart; struct clk *clk; int line; }; static int bcm2835aux_serial_probe(struct platform_device *pdev) { + struct uart_8250_port up = { }; struct bcm2835aux_data *data; struct resource *res; int ret; @@ -34,23 +39,21 @@ static int bcm2835aux_serial_probe(struct platform_device *pdev) return -ENOMEM; /* initialize data */ - spin_lock_init(&data->uart.port.lock); - data->uart.capabilities = UART_CAP_FIFO | UART_CAP_MINI; - data->uart.port.dev = &pdev->dev; - data->uart.port.regshift = 2; - data->uart.port.type = PORT_16550; - data->uart.port.iotype = UPIO_MEM; - data->uart.port.fifosize = 8; - data->uart.port.flags = UPF_SHARE_IRQ | - UPF_FIXED_PORT | - UPF_FIXED_TYPE | - UPF_SKIP_TEST; + up.capabilities = UART_CAP_FIFO | UART_CAP_MINI; + up.port.dev = &pdev->dev; + up.port.regshift = 2; + up.port.type = PORT_16550; + up.port.iotype = UPIO_MEM; + up.port.fifosize = 8; + up.port.flags = UPF_SHARE_IRQ | UPF_FIXED_PORT | UPF_FIXED_TYPE | + UPF_SKIP_TEST | UPF_IOREMAP; /* get the clock - this also enables the HW */ data->clk = devm_clk_get(&pdev->dev, NULL); ret = PTR_ERR_OR_ZERO(data->clk); if (ret) { - dev_err(&pdev->dev, "could not get clk: %d\n", ret); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "could not get clk: %d\n", ret); return ret; } @@ -58,7 +61,7 @@ static int bcm2835aux_serial_probe(struct platform_device *pdev) ret = platform_get_irq(pdev, 0); if (ret < 0) return ret; - data->uart.port.irq = ret; + up.port.irq = ret; /* map the main registers */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -66,15 +69,13 @@ static int bcm2835aux_serial_probe(struct platform_device *pdev) dev_err(&pdev->dev, "memory resource not found"); return -EINVAL; } - data->uart.port.membase = devm_ioremap_resource(&pdev->dev, res); - ret = PTR_ERR_OR_ZERO(data->uart.port.membase); - if (ret) - return ret; + up.port.mapbase = res->start; + up.port.mapsize = resource_size(res); /* Check for a fixed line number */ ret = of_alias_get_id(pdev->dev.of_node, "serial"); if (ret >= 0) - data->uart.port.line = ret; + up.port.line = ret; /* enable the clock as a last step */ ret = clk_prepare_enable(data->clk); @@ -89,13 +90,14 @@ static int bcm2835aux_serial_probe(struct platform_device *pdev) * so we have to multiply the actual clock by 2 * to get identical baudrates. */ - data->uart.port.uartclk = clk_get_rate(data->clk) * 2; + up.port.uartclk = clk_get_rate(data->clk) * 2; /* register the port */ - ret = serial8250_register_8250_port(&data->uart); + ret = serial8250_register_8250_port(&up); if (ret < 0) { - dev_err(&pdev->dev, "unable to register 8250 port - %d\n", - ret); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "unable to register 8250 port - %d\n", ret); goto dis_clk; } data->line = ret; @@ -113,7 +115,7 @@ static int bcm2835aux_serial_remove(struct platform_device *pdev) { struct bcm2835aux_data *data = platform_get_drvdata(pdev); - serial8250_unregister_port(data->uart.port.line); + serial8250_unregister_port(data->line); clk_disable_unprepare(data->clk); return 0; diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index e682390ce0de..f2a33c9082a6 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -174,7 +174,7 @@ static int serial_link_irq_chain(struct uart_8250_port *up) struct hlist_head *h; struct hlist_node *n; struct irq_info *i; - int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? IRQF_SHARED : 0; + int ret; mutex_lock(&hash_mutex); @@ -209,9 +209,8 @@ static int serial_link_irq_chain(struct uart_8250_port *up) INIT_LIST_HEAD(&up->list); i->head = &up->list; spin_unlock_irq(&i->lock); - irq_flags |= up->port.irqflags; ret = request_irq(up->port.irq, serial8250_interrupt, - irq_flags, up->port.name, i); + up->port.irqflags, up->port.name, i); if (ret < 0) serial_do_unlink(i, up); } @@ -816,6 +815,7 @@ static int serial8250_probe(struct platform_device *dev) uart.port.flags = p->flags; uart.port.mapbase = p->mapbase; uart.port.hub6 = p->hub6; + uart.port.has_sysrq = p->has_sysrq; uart.port.private_data = p->private_data; uart.port.type = p->type; uart.port.serial_in = p->serial_in; diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c index 108cd55f9c4d..d330da76d6b6 100644 --- a/drivers/tty/serial/8250/8250_exar.c +++ b/drivers/tty/serial/8250/8250_exar.c @@ -25,6 +25,14 @@ #include "8250.h" +#define PCI_DEVICE_ID_ACCES_COM_2S 0x1052 +#define PCI_DEVICE_ID_ACCES_COM_4S 0x105d +#define PCI_DEVICE_ID_ACCES_COM_8S 0x106c +#define PCI_DEVICE_ID_ACCES_COM232_8 0x10a8 +#define PCI_DEVICE_ID_ACCES_COM_2SM 0x10d2 +#define PCI_DEVICE_ID_ACCES_COM_4SM 0x10db +#define PCI_DEVICE_ID_ACCES_COM_8SM 0x10ea + #define PCI_DEVICE_ID_COMMTECH_4224PCI335 0x0002 #define PCI_DEVICE_ID_COMMTECH_4222PCI335 0x0004 #define PCI_DEVICE_ID_COMMTECH_2324PCI335 0x000a @@ -186,7 +194,7 @@ static int xr17v35x_startup(struct uart_port *port) static void exar_shutdown(struct uart_port *port) { unsigned char lsr; - bool tx_complete = 0; + bool tx_complete = false; struct uart_8250_port *up = up_to_u8250p(port); struct circ_buf *xmit = &port->state->xmit; int i = 0; @@ -194,9 +202,9 @@ static void exar_shutdown(struct uart_port *port) do { lsr = serial_in(up, UART_LSR); if (lsr & (UART_LSR_TEMT | UART_LSR_THRE)) - tx_complete = 1; + tx_complete = true; else - tx_complete = 0; + tx_complete = false; usleep_range(1000, 1100); } while (!uart_circ_empty(xmit) && !tx_complete && i++ < 1000); @@ -677,6 +685,22 @@ static int __maybe_unused exar_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(exar_pci_pm, exar_suspend, exar_resume); +static const struct exar8250_board acces_com_2x = { + .num_ports = 2, + .setup = pci_xr17c154_setup, +}; + +static const struct exar8250_board acces_com_4x = { + .num_ports = 4, + .setup = pci_xr17c154_setup, +}; + +static const struct exar8250_board acces_com_8x = { + .num_ports = 8, + .setup = pci_xr17c154_setup, +}; + + static const struct exar8250_board pbn_fastcom335_2 = { .num_ports = 2, .setup = pci_fastcom335_setup, @@ -745,6 +769,15 @@ static const struct exar8250_board pbn_exar_XR17V8358 = { } static const struct pci_device_id exar_pci_tbl[] = { + EXAR_DEVICE(ACCESSIO, ACCES_COM_2S, acces_com_2x), + EXAR_DEVICE(ACCESSIO, ACCES_COM_4S, acces_com_4x), + EXAR_DEVICE(ACCESSIO, ACCES_COM_8S, acces_com_8x), + EXAR_DEVICE(ACCESSIO, ACCES_COM232_8, acces_com_8x), + EXAR_DEVICE(ACCESSIO, ACCES_COM_2SM, acces_com_2x), + EXAR_DEVICE(ACCESSIO, ACCES_COM_4SM, acces_com_4x), + EXAR_DEVICE(ACCESSIO, ACCES_COM_8SM, acces_com_8x), + + CONNECT_DEVICE(XR17C152, UART_2_232, pbn_connect), CONNECT_DEVICE(XR17C154, UART_4_232, pbn_connect), CONNECT_DEVICE(XR17C158, UART_8_232, pbn_connect), diff --git a/drivers/tty/serial/8250/8250_fsl.c b/drivers/tty/serial/8250/8250_fsl.c index aa0e216d5ead..0d0c80905c58 100644 --- a/drivers/tty/serial/8250/8250_fsl.c +++ b/drivers/tty/serial/8250/8250_fsl.c @@ -1,8 +1,4 @@ // SPDX-License-Identifier: GPL-2.0 -#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) -#define SUPPORT_SYSRQ -#endif - #include <linux/serial_reg.h> #include <linux/serial_8250.h> diff --git a/drivers/tty/serial/8250/8250_gsc.c b/drivers/tty/serial/8250/8250_gsc.c index 0809ae2aa9b1..673cda3d011d 100644 --- a/drivers/tty/serial/8250/8250_gsc.c +++ b/drivers/tty/serial/8250/8250_gsc.c @@ -55,7 +55,7 @@ static int __init serial_init_chip(struct parisc_device *dev) uart.port.uartclk = (dev->id.sversion != 0xad) ? 7272727 : 1843200; uart.port.mapbase = address; - uart.port.membase = ioremap_nocache(address, 16); + uart.port.membase = ioremap(address, 16); if (!uart.port.membase) { dev_warn(&dev->dev, "Failed to map memory\n"); return -ENOMEM; diff --git a/drivers/tty/serial/8250/8250_ioc3.c b/drivers/tty/serial/8250/8250_ioc3.c new file mode 100644 index 000000000000..d5a39e105a76 --- /dev/null +++ b/drivers/tty/serial/8250/8250_ioc3.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * SGI IOC3 8250 UART driver + * + * Copyright (C) 2019 Thomas Bogendoerfer <tbogendoerfer@suse.de> + * + * based on code Copyright (C) 2005 Stanislaw Skowronek <skylark@unaligned.org> + * Copyright (C) 2014 Joshua Kinard <kumba@gentoo.org> + */ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/io.h> +#include <linux/platform_device.h> + +#include "8250.h" + +#define IOC3_UARTCLK (22000000 / 3) + +struct ioc3_8250_data { + int line; +}; + +static unsigned int ioc3_serial_in(struct uart_port *p, int offset) +{ + return readb(p->membase + (offset ^ 3)); +} + +static void ioc3_serial_out(struct uart_port *p, int offset, int value) +{ + writeb(value, p->membase + (offset ^ 3)); +} + +static int serial8250_ioc3_probe(struct platform_device *pdev) +{ + struct ioc3_8250_data *data; + struct uart_8250_port up; + struct resource *r; + void __iomem *membase; + int irq, line; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) + return -ENODEV; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + membase = devm_ioremap(&pdev->dev, r->start, resource_size(r)); + if (!membase) + return -ENOMEM; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + irq = 0; /* no interrupt -> use polling */ + + /* Register serial ports with 8250.c */ + memset(&up, 0, sizeof(struct uart_8250_port)); + up.port.iotype = UPIO_MEM; + up.port.uartclk = IOC3_UARTCLK; + up.port.type = PORT_16550A; + up.port.irq = irq; + up.port.flags = (UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ); + up.port.dev = &pdev->dev; + up.port.membase = membase; + up.port.mapbase = r->start; + up.port.serial_in = ioc3_serial_in; + up.port.serial_out = ioc3_serial_out; + line = serial8250_register_8250_port(&up); + if (line < 0) + return line; + + platform_set_drvdata(pdev, data); + return 0; +} + +static int serial8250_ioc3_remove(struct platform_device *pdev) +{ + struct ioc3_8250_data *data = platform_get_drvdata(pdev); + + serial8250_unregister_port(data->line); + return 0; +} + +static struct platform_driver serial8250_ioc3_driver = { + .probe = serial8250_ioc3_probe, + .remove = serial8250_ioc3_remove, + .driver = { + .name = "ioc3-serial8250", + } +}; + +module_platform_driver(serial8250_ioc3_driver); + +MODULE_AUTHOR("Thomas Bogendoerfer <tbogendoerfer@suse.de>"); +MODULE_DESCRIPTION("SGI IOC3 8250 UART driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c index 92fbf46ce3bd..f6687756ec5e 100644 --- a/drivers/tty/serial/8250/8250_of.c +++ b/drivers/tty/serial/8250/8250_of.c @@ -202,7 +202,6 @@ static int of_platform_serial_setup(struct platform_device *ofdev, port->type = type; port->uartclk = clk; - port->irqflags |= IRQF_SHARED; if (of_property_read_bool(np, "no-loopback-test")) port->flags |= UPF_SKIP_TEST; @@ -222,8 +221,10 @@ static int of_platform_serial_setup(struct platform_device *ofdev, if (IS_ENABLED(CONFIG_SERIAL_8250_FSL) && (of_device_is_compatible(np, "fsl,ns16550") || - of_device_is_compatible(np, "fsl,16550-FIFO64"))) + of_device_is_compatible(np, "fsl,16550-FIFO64"))) { port->handle_irq = fsl8250_handle_irq; + port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_8250_CONSOLE); + } return 0; err_unprepare: diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index 836e736ae188..6f343ca08440 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -8,10 +8,6 @@ * */ -#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) -#define SUPPORT_SYSRQ -#endif - #include <linux/clk.h> #include <linux/device.h> #include <linux/io.h> @@ -1147,7 +1143,7 @@ static int omap8250_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; - membase = devm_ioremap_nocache(&pdev->dev, regs->start, + membase = devm_ioremap(&pdev->dev, regs->start, resource_size(regs)); if (!membase) return -ENODEV; @@ -1192,6 +1188,7 @@ static int omap8250_probe(struct platform_device *pdev) up.port.throttle = omap_8250_throttle; up.port.unthrottle = omap_8250_unthrottle; up.port.rs485_config = omap_8250_rs485_config; + up.port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_8250_CONSOLE); ret = of_alias_get_id(np, "serial"); if (ret < 0) { diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index 022924d5ad54..939685fed396 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -275,7 +275,7 @@ static int pci_plx9050_init(struct pci_dev *dev) /* * enable/disable interrupts */ - p = ioremap_nocache(pci_resource_start(dev, 0), 0x80); + p = ioremap(pci_resource_start(dev, 0), 0x80); if (p == NULL) return -ENOMEM; writel(irq_config, p + 0x4c); @@ -299,7 +299,7 @@ static void pci_plx9050_exit(struct pci_dev *dev) /* * disable interrupts */ - p = ioremap_nocache(pci_resource_start(dev, 0), 0x80); + p = ioremap(pci_resource_start(dev, 0), 0x80); if (p != NULL) { writel(0, p + 0x4c); @@ -475,7 +475,7 @@ static int pci_siig10x_init(struct pci_dev *dev) break; } - p = ioremap_nocache(pci_resource_start(dev, 0), 0x80); + p = ioremap(pci_resource_start(dev, 0), 0x80); if (p == NULL) return -ENOMEM; diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 90655910b0c7..0325f2e53b74 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -11,10 +11,6 @@ * membase is an 'ioremapped' cookie. */ -#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) -#define SUPPORT_SYSRQ -#endif - #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/ioport.h> @@ -1001,6 +997,9 @@ static void autoconfig_16550a(struct uart_8250_port *up) up->port.type = PORT_16550A; up->capabilities |= UART_CAP_FIFO; + if (!IS_ENABLED(CONFIG_SERIAL_8250_16550A_VARIANTS)) + return; + /* * Check for presence of the EFR when DLAB is set. * Only ST16C650V1 UARTs pass this test. @@ -2178,6 +2177,10 @@ int serial8250_do_startup(struct uart_port *port) } } + /* Check if we need to have shared IRQs */ + if (port->irq && (up->port.flags & UPF_SHARE_IRQ)) + up->port.irqflags |= IRQF_SHARED; + if (port->irq && !(up->port.flags & UPF_NO_THRE_TEST)) { unsigned char iir1; /* @@ -2766,7 +2769,7 @@ static int serial8250_request_std_resource(struct uart_8250_port *up) } if (port->flags & UPF_IOREMAP) { - port->membase = ioremap_nocache(port->mapbase, size); + port->membase = ioremap(port->mapbase, size); if (!port->membase) { release_mem_region(port->mapbase, size); ret = -ENOMEM; @@ -3055,6 +3058,7 @@ void serial8250_init_port(struct uart_8250_port *up) spin_lock_init(&port->lock); port->ops = &serial8250_pops; + port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_8250_CONSOLE); up->cur_iotype = 0xFF; } diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig index fab3d4f20667..f16824bbb573 100644 --- a/drivers/tty/serial/8250/Kconfig +++ b/drivers/tty/serial/8250/Kconfig @@ -60,6 +60,16 @@ config SERIAL_8250_PNP This builds standard PNP serial support. You may be able to disable this feature if you only need legacy serial support. +config SERIAL_8250_16550A_VARIANTS + bool "Support for variants of the 16550A serial port" + depends on SERIAL_8250 + help + The 8250 driver can probe for many variants of the venerable 16550A + serial port. Doing so takes additional time at boot. + + On modern systems, especially those using serial only for a simple + console, you can say N here. + config SERIAL_8250_FINTEK bool "Support for Fintek F81216A LPC to 4 UART RS485 API" depends on SERIAL_8250 @@ -371,6 +381,17 @@ config SERIAL_8250_EM port hardware found on the Emma Mobile line of processors. If unsure, say N. +config SERIAL_8250_IOC3 + tristate "SGI IOC3 8250 UART support" + depends on SGI_MFD_IOC3 && SERIAL_8250 + select SERIAL_8250_EXTENDED + select SERIAL_8250_SHARE_IRQ + help + Enable this if you have a SGI Origin or Octane machine. This module + provides basic serial support by directly driving the UART chip + behind the IOC3 device on those systems. Maximum baud speed is + 38400bps using this driver. + config SERIAL_8250_RT288X bool "Ralink RT288x/RT305x/RT3662/RT3883 serial port support" depends on SERIAL_8250 diff --git a/drivers/tty/serial/8250/Makefile b/drivers/tty/serial/8250/Makefile index 08c1d8117506..51a6079d3f1f 100644 --- a/drivers/tty/serial/8250/Makefile +++ b/drivers/tty/serial/8250/Makefile @@ -28,6 +28,7 @@ obj-$(CONFIG_SERIAL_8250_FSL) += 8250_fsl.o obj-$(CONFIG_SERIAL_8250_MEN_MCB) += 8250_men_mcb.o obj-$(CONFIG_SERIAL_8250_DW) += 8250_dw.o obj-$(CONFIG_SERIAL_8250_EM) += 8250_em.o +obj-$(CONFIG_SERIAL_8250_IOC3) += 8250_ioc3.o obj-$(CONFIG_SERIAL_8250_OMAP) += 8250_omap.o obj-$(CONFIG_SERIAL_8250_LPC18XX) += 8250_lpc18xx.o obj-$(CONFIG_SERIAL_8250_MT6577) += 8250_mtk.o |