diff options
Diffstat (limited to 'arch/mips/lasat/serial.c')
| -rw-r--r-- | arch/mips/lasat/serial.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/arch/mips/lasat/serial.c b/arch/mips/lasat/serial.c new file mode 100644 index 0000000..205bd39 --- /dev/null +++ b/arch/mips/lasat/serial.c @@ -0,0 +1,94 @@ +/* + * Registration of Lasat UART platform device. + * + * Copyright (C) 2007 Brian Murphy <brian@murphy.dk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/platform_device.h> +#include <linux/serial_8250.h> + +#include <asm/bootinfo.h> +#include <asm/lasat/lasat.h> +#include <asm/lasat/serial.h> + +static struct resource lasat_serial_res[2] __initdata; + +static struct plat_serial8250_port lasat_serial8250_port[] = { + { + .iotype = UPIO_MEM, + .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | + UPF_SKIP_TEST, + }, + {}, +}; + +static __init int lasat_uart_add(void) +{ + struct platform_device *pdev; + int retval; + + pdev = platform_device_alloc("serial8250", -1); + if (!pdev) + return -ENOMEM; + + if (mips_machtype == MACH_LASAT_100) { + lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_100); + lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_100 * 8 - 1; + lasat_serial_res[0].flags = IORESOURCE_MEM; + lasat_serial_res[1].start = LASATINT_UART_100; + lasat_serial_res[1].end = LASATINT_UART_100; + lasat_serial_res[1].flags = IORESOURCE_IRQ; + + lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_100; + lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_100 * 16; + lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_100; + lasat_serial8250_port[0].irq = LASATINT_UART_100; + } else { + lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_200); + lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_200 * 8 - 1; + lasat_serial_res[0].flags = IORESOURCE_MEM; + lasat_serial_res[1].start = LASATINT_UART_200; + lasat_serial_res[1].end = LASATINT_UART_200; + lasat_serial_res[1].flags = IORESOURCE_IRQ; + + lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_200; + lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_200 * 16; + lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_200; + lasat_serial8250_port[0].irq = LASATINT_UART_200; + } + + pdev->id = PLAT8250_DEV_PLATFORM; + pdev->dev.platform_data = lasat_serial8250_port; + + retval = platform_device_add_resources(pdev, lasat_serial_res, ARRAY_SIZE(lasat_serial_res)); + if (retval) + goto err_free_device; + + retval = platform_device_add(pdev); + if (retval) + goto err_free_device; + + return 0; + +err_free_device: + platform_device_put(pdev); + + return retval; +} +device_initcall(lasat_uart_add); |
