diff options
Diffstat (limited to 'arch/mips/mips-boards/malta')
| -rw-r--r-- | arch/mips/mips-boards/malta/Makefile | 3 | ||||
| -rw-r--r-- | arch/mips/mips-boards/malta/malta_platform.c | 65 |
2 files changed, 67 insertions, 1 deletions
diff --git a/arch/mips/mips-boards/malta/Makefile b/arch/mips/mips-boards/malta/Makefile index 377d9e8f250..a242b0fc377 100644 --- a/arch/mips/mips-boards/malta/Makefile +++ b/arch/mips/mips-boards/malta/Makefile @@ -19,6 +19,7 @@ # under Linux. # -obj-y := malta_int.o malta_setup.o +obj-y := malta_int.o malta_platform.o malta_setup.o + obj-$(CONFIG_MTD) += malta_mtd.o obj-$(CONFIG_MIPS_MT_SMTC) += malta_smtc.o diff --git a/arch/mips/mips-boards/malta/malta_platform.c b/arch/mips/mips-boards/malta/malta_platform.c new file mode 100644 index 00000000000..83b9bab3cd3 --- /dev/null +++ b/arch/mips/mips-boards/malta/malta_platform.c @@ -0,0 +1,65 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2007 MIPS Technologies, Inc. + * written by Ralf Baechle (ralf@linux-mips.org) + * + * Probe driver for the Malta's UART ports: + * + * o 2 ports in the SMC SuperIO + * o 1 port in the CBUS UART, a discrete 16550 which normally is only used + * for bringups. + * + * We don't use 8250_platform.c on Malta as it would result in the CBUS + * UART becoming ttyS0. + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/serial_8250.h> + +#define SMC_PORT(base, int) \ +{ \ + .iobase = base, \ + .irq = int, \ + .uartclk = 1843200, \ + .iotype = UPIO_PORT, \ + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \ + .regshift = 0, \ +} + +#define CBUS_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP) + +static struct plat_serial8250_port uart8250_data[] = { + SMC_PORT(0x3F8, 4), + SMC_PORT(0x2F8, 3), + { + .mapbase = 0x1f000900, /* The CBUS UART */ + .irq = MIPS_CPU_IRQ_BASE + 2, + .uartclk = 3686400, /* Twice the usual clk! */ + .iotype = UPIO_MEM32, + .flags = CBUS_UART_FLAGS, + .regshift = 3, + }, + { }, +}; + +static struct platform_device uart8250_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM2, + .dev = { + .platform_data = uart8250_data, + }, +}; + +static int __init uart8250_init(void) +{ + return platform_device_register(&uart8250_device); +} + +module_init(uart8250_init); + +MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("8250 UART probe driver for the Malta CBUS UART"); |