tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Registration of Lasat UART platform device.
3 *
4 * Copyright (C) 2007 Brian Murphy <brian@murphy.dk>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20#include <linux/errno.h>
21#include <linux/init.h>
22#include <linux/ioport.h>
23#include <linux/platform_device.h>
24#include <linux/serial_8250.h>
25
26#include <asm/bootinfo.h>
27#include <asm/lasat/lasat.h>
28#include <asm/lasat/serial.h>
29
30static struct resource lasat_serial_res[2] __initdata;
31
32static struct plat_serial8250_port lasat_serial8250_port[] = {
33 {
34 .iotype = UPIO_MEM,
35 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF |
36 UPF_SKIP_TEST,
37 },
38 {},
39};
40
41static __init int lasat_uart_add(void)
42{
43 struct platform_device *pdev;
44 int retval;
45
46 pdev = platform_device_alloc("serial8250", -1);
47 if (!pdev)
48 return -ENOMEM;
49
50 if (mips_machtype == MACH_LASAT_100) {
51 lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_100);
52 lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_100 * 8 - 1;
53 lasat_serial_res[0].flags = IORESOURCE_MEM;
54 lasat_serial_res[1].start = LASATINT_UART_100;
55 lasat_serial_res[1].end = LASATINT_UART_100;
56 lasat_serial_res[1].flags = IORESOURCE_IRQ;
57
58 lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_100;
59 lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_100 * 16;
60 lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_100;
61 lasat_serial8250_port[0].irq = LASATINT_UART_100;
62 } else {
63 lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_200);
64 lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_200 * 8 - 1;
65 lasat_serial_res[0].flags = IORESOURCE_MEM;
66 lasat_serial_res[1].start = LASATINT_UART_200;
67 lasat_serial_res[1].end = LASATINT_UART_200;
68 lasat_serial_res[1].flags = IORESOURCE_IRQ;
69
70 lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_200;
71 lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_200 * 16;
72 lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_200;
73 lasat_serial8250_port[0].irq = LASATINT_UART_200;
74 }
75
76 pdev->id = PLAT8250_DEV_PLATFORM;
77 pdev->dev.platform_data = lasat_serial8250_port;
78
79 retval = platform_device_add_resources(pdev, lasat_serial_res, ARRAY_SIZE(lasat_serial_res));
80 if (retval)
81 goto err_free_device;
82
83 retval = platform_device_add(pdev);
84 if (retval)
85 goto err_free_device;
86
87 return 0;
88
89err_free_device:
90 platform_device_put(pdev);
91
92 return retval;
93}
94device_initcall(lasat_uart_add);