Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa...
[linux-2.6] / arch / arm / mach-shark / core.c
1 /*
2  *  linux/arch/arm/mach-shark/arch.c
3  *
4  *  Architecture specific stuff.
5  */
6 #include <linux/kernel.h>
7 #include <linux/init.h>
8 #include <linux/interrupt.h>
9 #include <linux/irq.h>
10 #include <linux/sched.h>
11 #include <linux/serial_8250.h>
12 #include <linux/io.h>
13
14 #include <asm/setup.h>
15 #include <asm/mach-types.h>
16 #include <asm/leds.h>
17 #include <asm/param.h>
18
19 #include <mach/hardware.h>
20
21 #include <asm/mach/map.h>
22 #include <asm/mach/arch.h>
23 #include <asm/mach/time.h>
24
25 static struct plat_serial8250_port serial_platform_data[] = {
26         {
27                 .iobase         = 0x3f8,
28                 .irq            = 4,
29                 .uartclk        = 1843200,
30                 .regshift       = 0,
31                 .iotype         = UPIO_PORT,
32                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
33         },
34         {
35                 .iobase         = 0x2f8,
36                 .irq            = 3,
37                 .uartclk        = 1843200,
38                 .regshift       = 0,
39                 .iotype         = UPIO_PORT,
40                 .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
41         },
42         { },
43 };
44
45 static struct platform_device serial_device = {
46         .name                   = "serial8250",
47         .id                     = PLAT8250_DEV_PLATFORM,
48         .dev                    = {
49                 .platform_data  = serial_platform_data,
50         },
51 };
52
53 static int __init shark_init(void)
54 {
55         int ret;
56
57         if (machine_is_shark())
58                 ret = platform_device_register(&serial_device);
59
60         return ret;
61 }
62
63 arch_initcall(shark_init);
64
65 extern void shark_init_irq(void);
66
67 static struct map_desc shark_io_desc[] __initdata = {
68         {
69                 .virtual        = IO_BASE,
70                 .pfn            = __phys_to_pfn(IO_START),
71                 .length         = IO_SIZE,
72                 .type           = MT_DEVICE
73         }
74 };
75
76 static void __init shark_map_io(void)
77 {
78         iotable_init(shark_io_desc, ARRAY_SIZE(shark_io_desc));
79 }
80
81 #define IRQ_TIMER 0
82 #define HZ_TIME ((1193180 + HZ/2) / HZ)
83
84 static irqreturn_t
85 shark_timer_interrupt(int irq, void *dev_id)
86 {
87         timer_tick();
88         return IRQ_HANDLED;
89 }
90
91 static struct irqaction shark_timer_irq = {
92         .name           = "Shark Timer Tick",
93         .flags          = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
94         .handler        = shark_timer_interrupt,
95 };
96
97 /*
98  * Set up timer interrupt, and return the current time in seconds.
99  */
100 static void __init shark_timer_init(void)
101 {
102         outb(0x34, 0x43);               /* binary, mode 0, LSB/MSB, Ch 0 */
103         outb(HZ_TIME & 0xff, 0x40);     /* LSB of count */
104         outb(HZ_TIME >> 8, 0x40);
105
106         setup_irq(IRQ_TIMER, &shark_timer_irq);
107 }
108
109 static struct sys_timer shark_timer = {
110         .init           = shark_timer_init,
111 };
112
113 MACHINE_START(SHARK, "Shark")
114         /* Maintainer: Alexander Schulz */
115         .phys_io        = 0x40000000,
116         .io_pg_offst    = ((0xe0000000) >> 18) & 0xfffc,
117         .boot_params    = 0x08003000,
118         .map_io         = shark_map_io,
119         .init_irq       = shark_init_irq,
120         .timer          = &shark_timer,
121 MACHINE_END