diff options
| author |   Wu Zhangjin <wuzhangjin@gmail.com> | 2009-11-06 18:35:34 +0800 |
|---|---|---|
| committer |   Ralf Baechle <ralf@linux-mips.org> | 2009-12-17 01:57:09 +0000 |
| commit | a3ed495190ebe918f4584291ed8c76f1c97a84fd (patch) | |
| tree | 700cc7549624c08b38d6003d63a7bb514fe09605 /arch/mips/loongson/common/serial.c | |
| parent | MIPS: Loongson: Cleanup machtype support (diff) | |
| download | linux-dev-a3ed495190ebe918f4584291ed8c76f1c97a84fd.tar.xz linux-dev-a3ed495190ebe918f4584291ed8c76f1c97a84fd.zip | |
MIPS: Loongson: Cleanup the serial port support
To share the same kernel image amon different machines we have added the
machtype command line support.
In the old serial port implementation the UART base address is hardcoded as
a macro in machine.h which breaks with machtype, so change that to discover
the address dynamically. Also move the initialization of the UART base
address to uart_base.c to avoid remapping twice for early_printk.c and
serial.c.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/581/
Patchwork: http://patchwork.linux-mips.org/patch/682/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson/common/serial.c')
| -rw-r--r-- | arch/mips/loongson/common/serial.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/arch/mips/loongson/common/serial.c b/arch/mips/loongson/common/serial.c index 6d341e426f64..dc6488c14763 100644 --- a/arch/mips/loongson/common/serial.c +++ b/arch/mips/loongson/common/serial.c @@ -23,7 +23,6 @@ { \ .irq = int, \ .uartclk = 1843200, \ - .iobase = (LOONGSON_UART_BASE - LOONGSON_PCIIO_BASE),\ .iotype = UPIO_PORT, \ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \ .regshift = 0, \ @@ -52,20 +51,20 @@ static struct plat_serial8250_port uart8250_data[][2] = { static struct platform_device uart8250_device = { .name = "serial8250", .id = PLAT8250_DEV_PLATFORM, - .dev = { - .platform_data = uart8250_data[LOONGSON_MACHTYPE], - }, }; static int __init serial_init(void) { - if (uart8250_data[LOONGSON_MACHTYPE][0].iotype == UPIO_MEM) - uart8250_data[LOONGSON_MACHTYPE][0].membase = - ioremap_nocache(LOONGSON_UART_BASE, 8); + if (uart8250_data[mips_machtype][0].iotype == UPIO_MEM) + uart8250_data[mips_machtype][0].membase = + (void __iomem *)_loongson_uart_base; + else if (uart8250_data[mips_machtype][0].iotype == UPIO_PORT) + uart8250_data[mips_machtype][0].iobase = + uart8250_base[mips_machtype] - LOONGSON_PCIIO_BASE; - platform_device_register(&uart8250_device); + uart8250_device.dev.platform_data = uart8250_data[mips_machtype]; - return 0; + return platform_device_register(&uart8250_device); } device_initcall(serial_init); |