Merge branch 'next/soc-exynos5250-arch' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6.git] / arch / arm / mach-sa1100 / hackkit.c
1 /*
2  * linux/arch/arm/mach-sa1100/hackkit.c
3  *
4  * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
5  *
6  * This file contains all HackKit tweaks. Based on original work from
7  * Nicolas Pitre's assabet fixes
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  *
13  */
14 #include <linux/init.h>
15 #include <linux/kernel.h>
16 #include <linux/sched.h>
17 #include <linux/tty.h>
18 #include <linux/module.h>
19 #include <linux/errno.h>
20 #include <linux/cpufreq.h>
21 #include <linux/serial_core.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
24
25 #include <mach/hardware.h>
26 #include <asm/mach-types.h>
27 #include <asm/setup.h>
28 #include <asm/page.h>
29 #include <asm/pgtable.h>
30 #include <asm/irq.h>
31
32 #include <asm/mach/arch.h>
33 #include <asm/mach/flash.h>
34 #include <asm/mach/map.h>
35 #include <asm/mach/irq.h>
36 #include <asm/mach/serial_sa1100.h>
37
38 #include "generic.h"
39
40 /**********************************************************************
41  *  prototypes
42  */
43
44 /* init funcs */
45 static void __init hackkit_map_io(void);
46
47 static u_int hackkit_get_mctrl(struct uart_port *port);
48 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
49 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
50
51 /**********************************************************************
52  *  global data
53  */
54
55 /**********************************************************************
56  *  static data
57  */
58
59 static struct map_desc hackkit_io_desc[] __initdata = {
60         {       /* Flash bank 0 */
61                 .virtual        =  0xe8000000,
62                 .pfn            = __phys_to_pfn(0x00000000),
63                 .length         = 0x01000000,
64                 .type           = MT_DEVICE
65         },
66 };
67
68 static struct sa1100_port_fns hackkit_port_fns __initdata = {
69         .set_mctrl      = hackkit_set_mctrl,
70         .get_mctrl      = hackkit_get_mctrl,
71         .pm             = hackkit_uart_pm,
72 };
73
74 /**********************************************************************
75  *  Static functions
76  */
77
78 static void __init hackkit_map_io(void)
79 {
80         sa1100_map_io();
81         iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
82
83         sa1100_register_uart_fns(&hackkit_port_fns);
84         sa1100_register_uart(0, 1);     /* com port */
85         sa1100_register_uart(1, 2);
86         sa1100_register_uart(2, 3);     /* radio module */
87
88         Ser1SDCR0 |= SDCR0_SUS;
89 }
90
91 /**
92  *      hackkit_uart_pm - powermgmt callback function for system 3 UART
93  *      @port: uart port structure
94  *      @state: pm state
95  *      @oldstate: old pm state
96  *
97  */
98 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
99 {
100         /* TODO: switch on/off uart in powersave mode */
101 }
102
103 /*
104  * Note! this can be called from IRQ context.
105  * FIXME: No modem ctrl lines yet.
106  */
107 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
108 {
109 #if 0
110         if (port->mapbase == _Ser1UTCR0) {
111                 u_int set = 0, clear = 0;
112
113                 if (mctrl & TIOCM_RTS)
114                         set |= PT_CTRL2_RS1_RTS;
115                 else
116                         clear |= PT_CTRL2_RS1_RTS;
117
118                 if (mctrl & TIOCM_DTR)
119                         set |= PT_CTRL2_RS1_DTR;
120                 else
121                         clear |= PT_CTRL2_RS1_DTR;
122
123                 PTCTRL2_clear(clear);
124                 PTCTRL2_set(set);
125         }
126 #endif
127 }
128
129 static u_int hackkit_get_mctrl(struct uart_port *port)
130 {
131         u_int ret = 0;
132 #if 0
133         u_int irqsr = PT_IRQSR;
134
135         /* need 2 reads to read current value */
136         irqsr = PT_IRQSR;
137
138         /* TODO: check IRQ source register for modem/com
139          status lines and set them correctly. */
140 #endif
141
142         ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
143
144         return ret;
145 }
146
147 static struct mtd_partition hackkit_partitions[] = {
148         {
149                 .name           = "BLOB",
150                 .size           = 0x00040000,
151                 .offset         = 0x00000000,
152                 .mask_flags     = MTD_WRITEABLE,  /* force read-only */
153         }, {
154                 .name           = "config",
155                 .size           = 0x00040000,
156                 .offset         = MTDPART_OFS_APPEND,
157         }, {
158                 .name           = "kernel",
159                 .size           = 0x00100000,
160                 .offset         = MTDPART_OFS_APPEND,
161         }, {
162                 .name           = "initrd",
163                 .size           = 0x00180000,
164                 .offset         = MTDPART_OFS_APPEND,
165         }, {
166                 .name           = "rootfs",
167                 .size           = 0x700000,
168                 .offset         = MTDPART_OFS_APPEND,
169         }, {
170                 .name           = "data",
171                 .size           = MTDPART_SIZ_FULL,
172                 .offset         = MTDPART_OFS_APPEND,
173         }
174 };
175
176 static struct flash_platform_data hackkit_flash_data = {
177         .map_name       = "cfi_probe",
178         .parts          = hackkit_partitions,
179         .nr_parts       = ARRAY_SIZE(hackkit_partitions),
180 };
181
182 static struct resource hackkit_flash_resource = {
183         .start          = SA1100_CS0_PHYS,
184         .end            = SA1100_CS0_PHYS + SZ_32M,
185         .flags          = IORESOURCE_MEM,
186 };
187
188 static void __init hackkit_init(void)
189 {
190         sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1);
191 }
192
193 /**********************************************************************
194  *  Exported Functions
195  */
196
197 MACHINE_START(HACKKIT, "HackKit Cpu Board")
198         .atag_offset    = 0x100,
199         .map_io         = hackkit_map_io,
200         .init_irq       = sa1100_init_irq,
201         .timer          = &sa1100_timer,
202         .init_machine   = hackkit_init,
203         .restart        = sa11x0_restart,
204 MACHINE_END