diff options
Diffstat (limited to 'arch/mips/jazz')
| -rw-r--r-- | arch/mips/jazz/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/jazz/jazz-platform.c | 60 |
2 files changed, 61 insertions, 1 deletions
diff --git a/arch/mips/jazz/Makefile b/arch/mips/jazz/Makefile index dd9d99bfcf7a..ae4c402b5004 100644 --- a/arch/mips/jazz/Makefile +++ b/arch/mips/jazz/Makefile @@ -2,4 +2,4 @@ # Makefile for the Jazz family specific parts of the kernel # -obj-y := irq.o jazzdma.o reset.o setup.o +obj-y := irq.o jazzdma.o jazz-platform.o reset.o setup.o diff --git a/arch/mips/jazz/jazz-platform.c b/arch/mips/jazz/jazz-platform.c new file mode 100644 index 000000000000..fd736703eef2 --- /dev/null +++ b/arch/mips/jazz/jazz-platform.c @@ -0,0 +1,60 @@ +/* + * 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 Ralf Baechle (ralf@linux-mips.org) + */ +#include <linux/init.h> +#include <linux/module.h> +#include <linux/serial_8250.h> + +#include <asm/jazz.h> + +/* + * Confusion ... It seems the original Microsoft Jazz machine used to have a + * 4.096MHz clock for its UART while the MIPS Magnum and Millenium systems + * had 8MHz. The Olivetti M700-10 and the Acer PICA have 1.8432MHz like PCs. + */ +#ifdef CONFIG_OLIVETTI_M700 +#define JAZZ_BASE_BAUD 1843200 +#else +#define JAZZ_BASE_BAUD 8000000 /* 3072000 */ +#endif + +#define JAZZ_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP) + +#define JAZZ_PORT(base, int) \ +{ \ + .mapbase = base, \ + .irq = int, \ + .uartclk = JAZZ_BASE_BAUD, \ + .iotype = UPIO_MEM, \ + .flags = JAZZ_UART_FLAGS, \ + .regshift = 0, \ +} + +static struct plat_serial8250_port uart8250_data[] = { + JAZZ_PORT(JAZZ_SERIAL1_BASE, JAZZ_SERIAL1_IRQ), + JAZZ_PORT(JAZZ_SERIAL2_BASE, JAZZ_SERIAL2_IRQ), + { }, +}; + +static struct platform_device uart8250_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .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 Jazz family"); |