aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-pxa/generic.c
blob: d327c127eddbefb6ece11b25e8e91e9536c43b97 (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
/*
 *  linux/arch/arm/mach-pxa/generic.c
 *
 *  Author:	Nicolas Pitre
 *  Created:	Jun 15, 2001
 *  Copyright:	MontaVista Software Inc.
 *
 * Code common to all PXA machines.
 *
 * 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.
 *
 * Since this file should be linked before any other machine specific file,
 * the __initcall() here will be executed first.  This serves as default
 * initialization stuff for PXA machines which can be overridden later if
 * need be.
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/ioport.h>
#include <linux/pm.h>

#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/mach/map.h>

#include <asm/arch/pxa-regs.h>
#include <asm/arch/udc.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/mmc.h>
#include <asm/arch/i2c.h>

#include "generic.h"

/*
 * Handy function to set GPIO alternate functions
 */

void pxa_gpio_mode(int gpio_mode)
{
	unsigned long flags;
	int gpio = gpio_mode & GPIO_MD_MASK_NR;
	int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
	int gafr;

	local_irq_save(flags);
	if (gpio_mode & GPIO_DFLT_LOW)
		GPCR(gpio) = GPIO_bit(gpio);
	else if (gpio_mode & GPIO_DFLT_HIGH)
		GPSR(gpio) = GPIO_bit(gpio);
	if (gpio_mode & GPIO_MD_MASK_DIR)
		GPDR(gpio) |= GPIO_bit(gpio);
	else
		GPDR(gpio) &= ~GPIO_bit(gpio);
	gafr = GAFR(gpio) & ~(0x3 << (((gpio) & 0xf)*2));
	GAFR(gpio) = gafr |  (fn  << (((gpio) & 0xf)*2));
	local_irq_restore(flags);
}

EXPORT_SYMBOL(pxa_gpio_mode);

/*
 * Routine to safely enable or disable a clock in the CKEN
 */
void pxa_set_cken(int clock, int enable)
{
	unsigned long flags;
	local_irq_save(flags);

	if (enable)
		CKEN |= clock;
	else
		CKEN &= ~clock;

	local_irq_restore(flags);
}

EXPORT_SYMBOL(pxa_set_cken);

/*
 * Intel PXA2xx internal register mapping.
 *
 * Note 1: not all PXA2xx variants implement all those addresses.
 *
 * Note 2: virtual 0xfffe0000-0xffffffff is reserved for the vector table
 *         and cache flush area.
 */
static struct map_desc standard_io_desc[] __initdata = {
 /* virtual     physical    length      type */
  { 0xf2000000, 0x40000000, 0x02000000, MT_DEVICE }, /* Devs */
  { 0xf4000000, 0x44000000, 0x00100000, MT_DEVICE }, /* LCD */
  { 0xf6000000, 0x48000000, 0x00100000, MT_DEVICE }, /* Mem Ctl */
  { 0xf8000000, 0x4c000000, 0x00100000, MT_DEVICE }, /* USB host */
  { 0xfa000000, 0x50000000, 0x00100000, MT_DEVICE }, /* Camera */
  { 0xfe000000, 0x58000000, 0x00100000, MT_DEVICE }, /* IMem ctl */
  { 0xff000000, 0x00000000, 0x00100000, MT_DEVICE }  /* UNCACHED_PHYS_0 */
};

void __init pxa_map_io(void)
{
	iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
	get_clk_frequency_khz(1);
}


static struct resource pxamci_resources[] = {
	[0] = {
		.start	= 0x41100000,
		.end	= 0x41100fff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_MMC,
		.end	= IRQ_MMC,
		.flags	= IORESOURCE_IRQ,
	},
};

static u64 pxamci_dmamask = 0xffffffffUL;

static struct platform_device pxamci_device = {
	.name		= "pxa2xx-mci",
	.id		= -1,
	.dev		= {
		.dma_mask = &pxamci_dmamask,
		.coherent_dma_mask = 0xffffffff,
	},
	.num_resources	= ARRAY_SIZE(pxamci_resources),
	.resource	= pxamci_resources,
};

void __init pxa_set_mci_info(struct pxamci_platform_data *info)
{
	pxamci_device.dev.platform_data = info;
}


static struct pxa2xx_udc_mach_info pxa_udc_info;

void __init pxa_set_udc_info(struct pxa2xx_udc_mach_info *info)
{
	memcpy(&pxa_udc_info, info, sizeof *info);
}

static struct resource pxa2xx_udc_resources[] = {
	[0] = {
		.start	= 0x40600000,
		.end	= 0x4060ffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_USB,
		.end	= IRQ_USB,
		.flags	= IORESOURCE_IRQ,
	},
};

static u64 udc_dma_mask = ~(u32)0;

static struct platform_device udc_device = {
	.name		= "pxa2xx-udc",
	.id		= -1,
	.resource	= pxa2xx_udc_resources,
	.num_resources	= ARRAY_SIZE(pxa2xx_udc_resources),
	.dev		=  {
		.platform_data	= &pxa_udc_info,
		.dma_mask	= &udc_dma_mask,
	}
};

static struct pxafb_mach_info pxa_fb_info;

void __init set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info)
{
	memcpy(&pxa_fb_info,hard_pxa_fb_info,sizeof(struct pxafb_mach_info));
}

static struct resource pxafb_resources[] = {
	[0] = {
		.start	= 0x44000000,
		.end	= 0x4400ffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= IRQ_LCD,
		.end	= IRQ_LCD,
		.flags	= IORESOURCE_IRQ,
	},
};

static u64 fb_dma_mask = ~(u64)0;

static struct platform_device pxafb_device = {
	.name		= "pxa2xx-fb",
	.id		= -1,
	.dev		= {
 		.platform_data	= &pxa_fb_info,
		.dma_mask	= &fb_dma_mask,
		.coherent_dma_mask = 0xffffffff,
	},
	.num_resources	= ARRAY_SIZE(pxafb_resources),
	.resource	= pxafb_resources,
};

void __init set_pxa_fb_parent(struct device *parent_dev)
{
	pxafb_device.dev.parent = parent_dev;
}

static struct platform_device ffuart_device = {
	.name		= "pxa2xx-uart",
	.id		= 0,
};
static struct platform_device btuart_device = {
	.name		= "pxa2xx-uart",
	.id		= 1,
};
static struct platform_device stuart_device = {
	.name		= "pxa2xx-uart",
	.id		= 2,
};

static struct resource i2c_resources[] = {
	{
		.start	= 0x40301680,
		.end	= 0x403016a3,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_I2C,
		.end	= IRQ_I2C,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device i2c_device = {
	.name		= "pxa2xx-i2c",
	.id		= 0,
	.resource	= i2c_resources,
	.num_resources	= ARRAY_SIZE(i2c_resources),
};

void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
{
	i2c_device.dev.platform_data = info;
}

static struct platform_device *devices[] __initdata = {
	&pxamci_device,
	&udc_device,
	&pxafb_device,
	&ffuart_device,
	&btuart_device,
	&stuart_device,
	&i2c_device,
};

static int __init pxa_init(void)
{
	return platform_add_devices(devices, ARRAY_SIZE(devices));
}

subsys_initcall(pxa_init);