aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-sa1100/badge4.c
blob: bda83e1ab0780e0d9bc44b46bc0a8b4ffde2313b (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
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
/*
 * linux/arch/arm/mach-sa1100/badge4.c
 *
 * BadgePAD 4 specific initialization
 *
 *   Tim Connors <connors@hpl.hp.com>
 *   Christopher Hoover <ch@hpl.hp.com>
 *
 * Copyright (C) 2002 Hewlett-Packard Company
 *
 * 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/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/tty.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/errno.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/setup.h>
#include <mach/irqs.h>

#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/hardware/sa1111.h>
#include <asm/mach/serial_sa1100.h>

#include <mach/badge4.h>

#include "generic.h"

static struct resource sa1111_resources[] = {
	[0] = {
		.start		= BADGE4_SA1111_BASE,
		.end		= BADGE4_SA1111_BASE + 0x00001fff,
		.flags		= IORESOURCE_MEM,
	},
	[1] = {
		.start		= BADGE4_IRQ_GPIO_SA1111,
		.end		= BADGE4_IRQ_GPIO_SA1111,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct sa1111_platform_data sa1111_info = {
	.irq_base	= IRQ_BOARD_END,
};

static u64 sa1111_dmamask = 0xffffffffUL;

static struct platform_device sa1111_device = {
	.name		= "sa1111",
	.id		= 0,
	.dev		= {
		.dma_mask = &sa1111_dmamask,
		.coherent_dma_mask = 0xffffffff,
		.platform_data = &sa1111_info,
	},
	.num_resources	= ARRAY_SIZE(sa1111_resources),
	.resource	= sa1111_resources,
};

static struct platform_device *devices[] __initdata = {
	&sa1111_device,
};

static int __init badge4_sa1111_init(void)
{
	/*
	 * Ensure that the memory bus request/grant signals are setup,
	 * and the grant is held in its inactive state
	 */
	sa1110_mb_disable();

	/*
	 * Probe for SA1111.
	 */
	return platform_add_devices(devices, ARRAY_SIZE(devices));
}


/*
 * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 *   Sixty-three 32 KiW Main Blocks (4032 Ki b)
 *
 * <or>
 *
 * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
 *   One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
 */
static struct mtd_partition badge4_partitions[] = {
	{
		.name	= "BLOB boot loader",
		.offset	= 0,
		.size	= 0x0000A000
	}, {
		.name	= "params",
		.offset	= MTDPART_OFS_APPEND,
		.size	= 0x00006000
	}, {
		.name	= "root",
		.offset	= MTDPART_OFS_APPEND,
		.size	= MTDPART_SIZ_FULL
	}
};

static struct flash_platform_data badge4_flash_data = {
	.map_name	= "cfi_probe",
	.parts		= badge4_partitions,
	.nr_parts	= ARRAY_SIZE(badge4_partitions),
};

static struct resource badge4_flash_resource = {
	.start		= SA1100_CS0_PHYS,
	.end		= SA1100_CS0_PHYS + SZ_64M - 1,
	.flags		= IORESOURCE_MEM,
};

static int five_v_on __initdata = 0;

static int __init five_v_on_setup(char *ignore)
{
	five_v_on = 1;
	return 1;
}
__setup("five_v_on", five_v_on_setup);


static int __init badge4_init(void)
{
	int ret;

	if (!machine_is_badge4())
		return -ENODEV;

	/* LCD */
	GPCR  = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
		 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
		 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
		 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
		 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
		 BADGE4_GPIO_GPC_VID);
	GPDR &= ~BADGE4_GPIO_INT_VID;
	GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
		 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
		 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
		 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
		 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
		 BADGE4_GPIO_GPC_VID);

	/* SDRAM SPD i2c */
	GPCR  = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
	GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);

	/* uart */
	GPCR  = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
	GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);

	/* CPLD muxsel0 input for mux/adc chip select */
	GPCR  = BADGE4_GPIO_MUXSEL0;
	GPDR |= BADGE4_GPIO_MUXSEL0;

	/* test points: J5, J6 as inputs, J7 outputs */
	GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
	GPCR  = BADGE4_GPIO_TESTPT_J7;
	GPDR |= BADGE4_GPIO_TESTPT_J7;

	/* 5V supply rail. */
	GPCR  = BADGE4_GPIO_PCMEN5V;		/* initially off */
	GPDR |= BADGE4_GPIO_PCMEN5V;

	/* CPLD sdram type inputs; set up by blob */
	//GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
	printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
		!!(GPLR & BADGE4_GPIO_SDTYP1),
		!!(GPLR & BADGE4_GPIO_SDTYP0));

	/* SA1111 reset pin; set up by blob */
	//GPSR  = BADGE4_GPIO_SA1111_NRST;
	//GPDR |= BADGE4_GPIO_SA1111_NRST;


	/* power management cruft */
	PGSR = 0;
	PWER = 0;
	PCFR = 0;
	PSDR = 0;

	PWER |= PWER_GPIO26;	/* wake up on an edge from TESTPT_J5 */
	PWER |= PWER_RTC;	/* wake up if rtc fires */

	/* drive sa1111_nrst during sleep */
	PGSR |= BADGE4_GPIO_SA1111_NRST;
	/* drive CPLD as is during sleep */
	PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));


	/* Now bring up the SA-1111. */
	ret = badge4_sa1111_init();
	if (ret < 0)
		printk(KERN_ERR
			"%s: SA-1111 initialization failed (%d)\n",
			__func__, ret);


	/* maybe turn on 5v0 from the start */
	badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);

	sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);

	return 0;
}

arch_initcall(badge4_init);


static unsigned badge4_5V_bitmap = 0;

void badge4_set_5V(unsigned subsystem, int on)
{
	unsigned long flags;
	unsigned old_5V_bitmap;

	local_irq_save(flags);

	old_5V_bitmap = badge4_5V_bitmap;

	if (on) {
		badge4_5V_bitmap |= subsystem;
	} else {
		badge4_5V_bitmap &= ~subsystem;
	}

	/* detect on->off and off->on transitions */
	if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
		/* was off, now on */
		printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
		GPSR = BADGE4_GPIO_PCMEN5V;
	} else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
		/* was on, now off */
		printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
		GPCR = BADGE4_GPIO_PCMEN5V;
	}

	local_irq_restore(flags);
}
EXPORT_SYMBOL(badge4_set_5V);


static struct map_desc badge4_io_desc[] __initdata = {
	{	/* SRAM  bank 1 */
		.virtual	= 0xf1000000,
		.pfn		= __phys_to_pfn(0x08000000),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}, {	/* SRAM  bank 2 */
		.virtual	= 0xf2000000,
		.pfn		= __phys_to_pfn(0x10000000),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}, {	/* SA-1111      */
		.virtual	= 0xf4000000,
		.pfn		= __phys_to_pfn(0x48000000),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}
};

static void
badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
{
	if (!state) {
		Ser1SDCR0 |= SDCR0_UART;
	}
}

static struct sa1100_port_fns badge4_port_fns __initdata = {
	//.get_mctrl	= badge4_get_mctrl,
	//.set_mctrl	= badge4_set_mctrl,
	.pm		= badge4_uart_pm,
};

static void __init badge4_map_io(void)
{
	sa1100_map_io();
	iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));

	sa1100_register_uart_fns(&badge4_port_fns);
	sa1100_register_uart(0, 3);
	sa1100_register_uart(1, 1);
}

MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
	.atag_offset	= 0x100,
	.map_io		= badge4_map_io,
	.init_irq	= sa1100_init_irq,
	.timer		= &sa1100_timer,
#ifdef CONFIG_SA1111
	.dma_zone_size	= SZ_1M,
#endif
MACHINE_END