summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-w90x900/mfp.c
blob: c58d142b8a467134d193d2252ce52a361e314fcf (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
/*
 * linux/arch/arm/mach-w90x900/mfp.c
 *
 * Copyright (c) 2008 Nuvoton technology corporation
 *
 * Wan ZongShun <mcuos.com@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation;version 2 of the License.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/string.h>
#include <linux/clk.h>
#include <linux/mutex.h>
#include <linux/io.h>

#include <mach/hardware.h>

#define REG_MFSEL	(W90X900_VA_GCR + 0xC)

#define GPSELF		(0x01 << 1)
#define GPSELC		(0x03 << 2)
#define GPSELD		(0x0f << 4)

#define GPSELEI0	(0x01 << 26)
#define GPSELEI1	(0x01 << 27)

#define GPIOG0TO1	(0x03 << 14)
#define GPIOG2TO3	(0x03 << 16)
#define GPIOG22TO23	(0x03 << 22)
#define GPIOG18TO20	(0x07 << 18)

#define ENSPI		(0x0a << 14)
#define ENI2C0		(0x01 << 14)
#define ENI2C1		(0x01 << 16)
#define ENAC97		(0x02 << 22)
#define ENSD1		(0x02 << 18)
#define ENSD0		(0x0a << 4)
#define ENKPI		(0x02 << 2)
#define ENNAND		(0x01 << 2)

static DEFINE_MUTEX(mfp_mutex);

void mfp_set_groupf(struct device *dev)
{
	unsigned long mfpen;
	const char *dev_id;

	BUG_ON(!dev);

	mutex_lock(&mfp_mutex);

	dev_id = dev_name(dev);

	mfpen = __raw_readl(REG_MFSEL);

	if (strcmp(dev_id, "nuc900-emc") == 0)
		mfpen |= GPSELF;/*enable mac*/
	else
		mfpen &= ~GPSELF;/*GPIOF[9:0]*/

	__raw_writel(mfpen, REG_MFSEL);

	mutex_unlock(&mfp_mutex);
}
EXPORT_SYMBOL(mfp_set_groupf);

void mfp_set_groupc(struct device *dev)
{
	unsigned long mfpen;
	const char *dev_id;

	BUG_ON(!dev);

	mutex_lock(&mfp_mutex);

	dev_id = dev_name(dev);

	mfpen = __raw_readl(REG_MFSEL);

	if (strcmp(dev_id, "nuc900-lcd") == 0)
		mfpen |= GPSELC;/*enable lcd*/
	else if (strcmp(dev_id, "nuc900-kpi") == 0) {
		mfpen &= (~GPSELC);/*enable kpi*/
		mfpen |= ENKPI;
	} else if (strcmp(dev_id, "nuc900-nand") == 0) {
		mfpen &= (~GPSELC);/*enable nand*/
		mfpen |= ENNAND;
	} else
		mfpen &= (~GPSELC);/*GPIOC[14:0]*/

	__raw_writel(mfpen, REG_MFSEL);

	mutex_unlock(&mfp_mutex);
}
EXPORT_SYMBOL(mfp_set_groupc);

void mfp_set_groupi(struct device *dev)
{
	unsigned long mfpen;
	const char *dev_id;

	BUG_ON(!dev);

	mutex_lock(&mfp_mutex);

	dev_id = dev_name(dev);

	mfpen = __raw_readl(REG_MFSEL);

	mfpen &= ~GPSELEI1;/*default gpio16*/

	if (strcmp(dev_id, "nuc900-wdog") == 0)
		mfpen |= GPSELEI1;/*enable wdog*/
	else if (strcmp(dev_id, "nuc900-atapi") == 0)
		mfpen |= GPSELEI0;/*enable atapi*/
	else if (strcmp(dev_id, "nuc900-keypad") == 0)
		mfpen &= ~GPSELEI0;/*enable keypad*/

	__raw_writel(mfpen, REG_MFSEL);

	mutex_unlock(&mfp_mutex);
}
EXPORT_SYMBOL(mfp_set_groupi);

void mfp_set_groupg(struct device *dev, const char *subname)
{
	unsigned long mfpen;
	const char *dev_id;

	BUG_ON((!dev) && (!subname));

	mutex_lock(&mfp_mutex);

	if (subname != NULL)
		dev_id = subname;
	else
		dev_id = dev_name(dev);

	mfpen = __raw_readl(REG_MFSEL);

	if (strcmp(dev_id, "nuc900-spi") == 0) {
		mfpen &= ~(GPIOG0TO1 | GPIOG2TO3);
		mfpen |= ENSPI;/*enable spi*/
	} else if (strcmp(dev_id, "nuc900-i2c0") == 0) {
		mfpen &= ~(GPIOG0TO1);
		mfpen |= ENI2C0;/*enable i2c0*/
	} else if (strcmp(dev_id, "nuc900-i2c1") == 0) {
		mfpen &= ~(GPIOG2TO3);
		mfpen |= ENI2C1;/*enable i2c1*/
	} else if (strcmp(dev_id, "nuc900-ac97") == 0) {
		mfpen &= ~(GPIOG22TO23);
		mfpen |= ENAC97;/*enable AC97*/
	} else if (strcmp(dev_id, "nuc900-mmc-port1") == 0) {
		mfpen &= ~(GPIOG18TO20);
		mfpen |= (ENSD1 | 0x01);/*enable sd1*/
	} else {
		mfpen &= ~(GPIOG0TO1 | GPIOG2TO3);/*GPIOG[3:0]*/
	}

	__raw_writel(mfpen, REG_MFSEL);

	mutex_unlock(&mfp_mutex);
}
EXPORT_SYMBOL(mfp_set_groupg);

void mfp_set_groupd(struct device *dev, const char *subname)
{
	unsigned long mfpen;
	const char *dev_id;

	BUG_ON((!dev) && (!subname));

	mutex_lock(&mfp_mutex);

	if (subname != NULL)
		dev_id = subname;
	else
		dev_id = dev_name(dev);

	mfpen = __raw_readl(REG_MFSEL);

	if (strcmp(dev_id, "nuc900-mmc-port0") == 0) {
		mfpen &= ~GPSELD;/*enable sd0*/
		mfpen |= ENSD0;
	} else
		mfpen &= (~GPSELD);

	__raw_writel(mfpen, REG_MFSEL);

	mutex_unlock(&mfp_mutex);
}
EXPORT_SYMBOL(mfp_set_groupd);
OpenPOWER on IntegriCloud