1 /* 1
2 * Copyright (C) 2007-2009, OpenWrt.org, Flor
3 * GPIOLIB support for Alchemy chips.
4 *
5 * This program is free software; you can red
6 * under the terms of the GNU General Publ
7 * Free Software Foundation; either version
8 * option) any later version.
9 *
10 * THIS SOFTWARE IS PROVIDED ``AS IS'' A
11 * WARRANTIES, INCLUDING, BUT NOT LIMITED
12 * MERCHANTABILITY AND FITNESS FOR A PARTICUL
13 * NO EVENT SHALL THE AUTHOR BE LIABL
14 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQU
15 * NOT LIMITED TO, PROCUREMENT OF SUBSTITU
16 * USE, DATA, OR PROFITS; OR BUSINESS INTER
17 * ANY THEORY OF LIABILITY, WHETHER IN CONTR
18 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISIN
19 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSS
20 *
21 * You should have received a copy of the GN
22 * with this program; if not, write to the F
23 * 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 * Notes :
26 * au1000 SoC have only one GPIO block :
27 * Au1100, Au15x0, Au12x0 have a second o
28 * Au1300 is totally different: 1 block w
29 */
30
31 #include <linux/init.h>
32 #include <linux/kernel.h>
33 #include <linux/types.h>
34 #include <linux/gpio/driver.h>
35 #include <asm/mach-au1x00/gpio-au1000.h>
36 #include <asm/mach-au1x00/gpio-au1300.h>
37
38 static int gpio2_get(struct gpio_chip *chip, u
39 {
40 return !!alchemy_gpio2_get_value(offse
41 }
42
43 static void gpio2_set(struct gpio_chip *chip,
44 {
45 alchemy_gpio2_set_value(offset + ALCHE
46 }
47
48 static int gpio2_direction_input(struct gpio_c
49 {
50 return alchemy_gpio2_direction_input(o
51 }
52
53 static int gpio2_direction_output(struct gpio_
54 int value)
55 {
56 return alchemy_gpio2_direction_output(
57
58 }
59
60 static int gpio2_to_irq(struct gpio_chip *chip
61 {
62 return alchemy_gpio2_to_irq(offset + A
63 }
64
65
66 static int gpio1_get(struct gpio_chip *chip, u
67 {
68 return !!alchemy_gpio1_get_value(offse
69 }
70
71 static void gpio1_set(struct gpio_chip *chip,
72 unsigned offse
73 {
74 alchemy_gpio1_set_value(offset + ALCHE
75 }
76
77 static int gpio1_direction_input(struct gpio_c
78 {
79 return alchemy_gpio1_direction_input(o
80 }
81
82 static int gpio1_direction_output(struct gpio_
83 unsign
84 {
85 return alchemy_gpio1_direction_output(
86 v
87 }
88
89 static int gpio1_to_irq(struct gpio_chip *chip
90 {
91 return alchemy_gpio1_to_irq(offset + A
92 }
93
94 struct gpio_chip alchemy_gpio_chip[] = {
95 [0] = {
96 .label = "alc
97 .direction_input = gpio
98 .direction_output = gpio
99 .get = gpio
100 .set = gpio
101 .to_irq = gpio
102 .base = ALCH
103 .ngpio = ALCH
104 },
105 [1] = {
106 .label = "alc
107 .direction_input = gpio
108 .direction_output = gpio
109 .get = gpio
110 .set = gpio
111 .to_irq = gpio
112 .base = ALCH
113 .ngpio = ALCH
114 },
115 };
116
117 static int alchemy_gpic_get(struct gpio_chip *
118 {
119 return !!au1300_gpio_get_value(off + A
120 }
121
122 static void alchemy_gpic_set(struct gpio_chip
123 {
124 au1300_gpio_set_value(off + AU1300_GPI
125 }
126
127 static int alchemy_gpic_dir_input(struct gpio_
128 {
129 return au1300_gpio_direction_input(off
130 }
131
132 static int alchemy_gpic_dir_output(struct gpio
133 int v)
134 {
135 return au1300_gpio_direction_output(of
136 }
137
138 static int alchemy_gpic_gpio_to_irq(struct gpi
139 {
140 return au1300_gpio_to_irq(off + AU1300
141 }
142
143 static struct gpio_chip au1300_gpiochip = {
144 .label = "alchemy-gpi
145 .direction_input = alchemy_gpic
146 .direction_output = alchemy_gpic
147 .get = alchemy_gpic
148 .set = alchemy_gpic
149 .to_irq = alchemy_gpic
150 .base = AU1300_GPIO_
151 .ngpio = AU1300_GPIO_
152 };
153
154 static int __init alchemy_gpiochip_init(void)
155 {
156 int ret = 0;
157
158 switch (alchemy_get_cputype()) {
159 case ALCHEMY_CPU_AU1000:
160 ret = gpiochip_add_data(&alche
161 break;
162 case ALCHEMY_CPU_AU1500...ALCHEMY_CPU_
163 ret = gpiochip_add_data(&alche
164 ret |= gpiochip_add_data(&alch
165 break;
166 case ALCHEMY_CPU_AU1300:
167 ret = gpiochip_add_data(&au130
168 break;
169 }
170 return ret;
171 }
172 arch_initcall(alchemy_gpiochip_init);
173
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