summaryrefslogtreecommitdiff
path: root/arch/arm/mach-sa1100/hackkit.c
blob: fc106aab7c7e4a9e4b175c5a74fc7902f254a53b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
/*
 * linux/arch/arm/mach-sa1100/hackkit.c
 *
 * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
 *
 * This file contains all HackKit tweaks. Based on original work from
 * Nicolas Pitre's assabet fixes
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/tty.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/cpufreq.h>
#include <linux/serial_core.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/tty.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/platform_device.h>

#include <asm/mach-types.h>
#include <asm/setup.h>
#include <asm/page.h>
#include <asm/pgtable.h>

#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/serial_sa1100.h>

#include <mach/hardware.h>
#include <mach/irqs.h>

#include "generic.h"

/**********************************************************************
 *  prototypes
 */

/* init funcs */
static void __init hackkit_map_io(void);

static u_int hackkit_get_mctrl(struct uart_port *port);
static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);

/**********************************************************************
 *  global data
 */

/**********************************************************************
 *  static data
 */

static struct map_desc hackkit_io_desc[] __initdata = {
	{	/* Flash bank 0 */
		.virtual	=  0xe8000000,
		.pfn		= __phys_to_pfn(0x00000000),
		.length		= 0x01000000,
		.type		= MT_DEVICE
	},
};

static struct sa1100_port_fns hackkit_port_fns __initdata = {
	.set_mctrl	= hackkit_set_mctrl,
	.get_mctrl	= hackkit_get_mctrl,
	.pm		= hackkit_uart_pm,
};

/**********************************************************************
 *  Static functions
 */

static void __init hackkit_map_io(void)
{
	sa1100_map_io();
	iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));

	sa1100_register_uart_fns(&hackkit_port_fns);
	sa1100_register_uart(0, 1);	/* com port */
	sa1100_register_uart(1, 2);
	sa1100_register_uart(2, 3);	/* radio module */

	Ser1SDCR0 |= SDCR0_SUS;
}

/**
 *	hackkit_uart_pm - powermgmt callback function for system 3 UART
 *	@port: uart port structure
 *	@state: pm state
 *	@oldstate: old pm state
 *
 */
static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
{
	/* TODO: switch on/off uart in powersave mode */
}

/*
 * Note! this can be called from IRQ context.
 * FIXME: No modem ctrl lines yet.
 */
static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
{
#if 0
	if (port->mapbase == _Ser1UTCR0) {
		u_int set = 0, clear = 0;

		if (mctrl & TIOCM_RTS)
			set |= PT_CTRL2_RS1_RTS;
		else
			clear |= PT_CTRL2_RS1_RTS;

		if (mctrl & TIOCM_DTR)
			set |= PT_CTRL2_RS1_DTR;
		else
			clear |= PT_CTRL2_RS1_DTR;

		PTCTRL2_clear(clear);
		PTCTRL2_set(set);
	}
#endif
}

static u_int hackkit_get_mctrl(struct uart_port *port)
{
	u_int ret = 0;
#if 0
	u_int irqsr = PT_IRQSR;

	/* need 2 reads to read current value */
	irqsr = PT_IRQSR;

	/* TODO: check IRQ source register for modem/com
	 status lines and set them correctly. */
#endif

	ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;

	return ret;
}

static struct mtd_partition hackkit_partitions[] = {
	{
		.name		= "BLOB",
		.size		= 0x00040000,
		.offset		= 0x00000000,
		.mask_flags	= MTD_WRITEABLE,  /* force read-only */
	}, {
		.name		= "config",
		.size		= 0x00040000,
		.offset		= MTDPART_OFS_APPEND,
	}, {
		.name		= "kernel",
		.size		= 0x00100000,
		.offset		= MTDPART_OFS_APPEND,
	}, {
		.name		= "initrd",
		.size		= 0x00180000,
		.offset		= MTDPART_OFS_APPEND,
	}, {
		.name		= "rootfs",
		.size		= 0x700000,
		.offset		= MTDPART_OFS_APPEND,
	}, {
		.name		= "data",
		.size		= MTDPART_SIZ_FULL,
		.offset		= MTDPART_OFS_APPEND,
	}
};

static struct flash_platform_data hackkit_flash_data = {
	.map_name	= "cfi_probe",
	.parts		= hackkit_partitions,
	.nr_parts	= ARRAY_SIZE(hackkit_partitions),
};

static struct resource hackkit_flash_resource =
	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);

/* LEDs */
struct gpio_led hackkit_gpio_leds[] = {
	{
		.name			= "hackkit:red",
		.default_trigger	= "cpu0",
		.gpio			= 22,
	},
	{
		.name			= "hackkit:green",
		.default_trigger	= "heartbeat",
		.gpio			= 23,
	},
};

static struct gpio_led_platform_data hackkit_gpio_led_info = {
	.leds		= hackkit_gpio_leds,
	.num_leds	= ARRAY_SIZE(hackkit_gpio_leds),
};

static struct platform_device hackkit_leds = {
	.name	= "leds-gpio",
	.id	= -1,
	.dev	= {
		.platform_data	= &hackkit_gpio_led_info,
	}
};

static void __init hackkit_init(void)
{
	sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1);
	platform_device_register(&hackkit_leds);
}

/**********************************************************************
 *  Exported Functions
 */

MACHINE_START(HACKKIT, "HackKit Cpu Board")
	.atag_offset	= 0x100,
	.map_io		= hackkit_map_io,
	.nr_irqs	= SA1100_NR_IRQS,
	.init_irq	= sa1100_init_irq,
	.timer		= &sa1100_timer,
	.init_machine	= hackkit_init,
	.init_late	= sa11x0_init_late,
	.restart	= sa11x0_restart,
MACHINE_END