diff options
Diffstat (limited to 'arch/h8300/kernel/gpio.c')
-rw-r--r-- | arch/h8300/kernel/gpio.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/arch/h8300/kernel/gpio.c b/arch/h8300/kernel/gpio.c deleted file mode 100644 index 084bfd0c107e..000000000000 --- a/arch/h8300/kernel/gpio.c +++ /dev/null | |||
@@ -1,178 +0,0 @@ | |||
1 | /* | ||
2 | * linux/arch/h8300/kernel/gpio.c | ||
3 | * | ||
4 | * Yoshinori Sato <ysato@users.sourceforge.jp> | ||
5 | * | ||
6 | */ | ||
7 | |||
8 | /* | ||
9 | * Internal I/O Port Management | ||
10 | */ | ||
11 | |||
12 | #include <linux/stddef.h> | ||
13 | #include <linux/proc_fs.h> | ||
14 | #include <linux/seq_file.h> | ||
15 | #include <linux/kernel.h> | ||
16 | #include <linux/string.h> | ||
17 | #include <linux/fs.h> | ||
18 | #include <linux/init.h> | ||
19 | |||
20 | #define _(addr) (volatile unsigned char *)(addr) | ||
21 | #if defined(CONFIG_H83007) || defined(CONFIG_H83068) | ||
22 | #include <asm/regs306x.h> | ||
23 | static volatile unsigned char *ddrs[] = { | ||
24 | _(P1DDR),_(P2DDR),_(P3DDR),_(P4DDR),_(P5DDR),_(P6DDR), | ||
25 | NULL, _(P8DDR),_(P9DDR),_(PADDR),_(PBDDR), | ||
26 | }; | ||
27 | #define MAX_PORT 11 | ||
28 | #endif | ||
29 | |||
30 | #if defined(CONFIG_H83002) || defined(CONFIG_H8048) | ||
31 | /* Fix me!! */ | ||
32 | #include <asm/regs306x.h> | ||
33 | static volatile unsigned char *ddrs[] = { | ||
34 | _(P1DDR),_(P2DDR),_(P3DDR),_(P4DDR),_(P5DDR),_(P6DDR), | ||
35 | NULL, _(P8DDR),_(P9DDR),_(PADDR),_(PBDDR), | ||
36 | }; | ||
37 | #define MAX_PORT 11 | ||
38 | #endif | ||
39 | |||
40 | #if defined(CONFIG_H8S2678) | ||
41 | #include <asm/regs267x.h> | ||
42 | static volatile unsigned char *ddrs[] = { | ||
43 | _(P1DDR),_(P2DDR),_(P3DDR),NULL ,_(P5DDR),_(P6DDR), | ||
44 | _(P7DDR),_(P8DDR),NULL, _(PADDR),_(PBDDR),_(PCDDR), | ||
45 | _(PDDDR),_(PEDDR),_(PFDDR),_(PGDDR),_(PHDDR), | ||
46 | _(PADDR),_(PBDDR),_(PCDDR),_(PDDDR),_(PEDDR),_(PFDDR), | ||
47 | _(PGDDR),_(PHDDR) | ||
48 | }; | ||
49 | #define MAX_PORT 17 | ||
50 | #endif | ||
51 | #undef _ | ||
52 | |||
53 | #if !defined(P1DDR) | ||
54 | #error Unsuppoted CPU Selection | ||
55 | #endif | ||
56 | |||
57 | static struct { | ||
58 | unsigned char used; | ||
59 | unsigned char ddr; | ||
60 | } gpio_regs[MAX_PORT]; | ||
61 | |||
62 | extern char *_platform_gpio_table(int length); | ||
63 | |||
64 | int h8300_reserved_gpio(int port, unsigned int bits) | ||
65 | { | ||
66 | unsigned char *used; | ||
67 | |||
68 | if (port < 0 || port >= MAX_PORT) | ||
69 | return -1; | ||
70 | used = &(gpio_regs[port].used); | ||
71 | if ((*used & bits) != 0) | ||
72 | return 0; | ||
73 | *used |= bits; | ||
74 | return 1; | ||
75 | } | ||
76 | |||
77 | int h8300_free_gpio(int port, unsigned int bits) | ||
78 | { | ||
79 | unsigned char *used; | ||
80 | |||
81 | if (port < 0 || port >= MAX_PORT) | ||
82 | return -1; | ||
83 | used = &(gpio_regs[port].used); | ||
84 | if ((*used & bits) != bits) | ||
85 | return 0; | ||
86 | *used &= (~bits); | ||
87 | return 1; | ||
88 | } | ||
89 | |||
90 | int h8300_set_gpio_dir(int port_bit,int dir) | ||
91 | { | ||
92 | int port = (port_bit >> 8) & 0xff; | ||
93 | int bit = port_bit & 0xff; | ||
94 | |||
95 | if (ddrs[port] == NULL) | ||
96 | return 0; | ||
97 | if (gpio_regs[port].used & bit) { | ||
98 | if (dir) | ||
99 | gpio_regs[port].ddr |= bit; | ||
100 | else | ||
101 | gpio_regs[port].ddr &= ~bit; | ||
102 | *ddrs[port] = gpio_regs[port].ddr; | ||
103 | return 1; | ||
104 | } else | ||
105 | return 0; | ||
106 | } | ||
107 | |||
108 | int h8300_get_gpio_dir(int port_bit) | ||
109 | { | ||
110 | int port = (port_bit >> 8) & 0xff; | ||
111 | int bit = port_bit & 0xff; | ||
112 | |||
113 | if (ddrs[port] == NULL) | ||
114 | return 0; | ||
115 | if (gpio_regs[port].used & bit) { | ||
116 | return (gpio_regs[port].ddr & bit) != 0; | ||
117 | } else | ||
118 | return -1; | ||
119 | } | ||
120 | |||
121 | #if defined(CONFIG_PROC_FS) | ||
122 | static char *port_status(int portno) | ||
123 | { | ||
124 | static char result[10]; | ||
125 | static const char io[2]={'I','O'}; | ||
126 | char *rp; | ||
127 | int c; | ||
128 | unsigned char used,ddr; | ||
129 | |||
130 | used = gpio_regs[portno].used; | ||
131 | ddr = gpio_regs[portno].ddr; | ||
132 | result[8]='\0'; | ||
133 | rp = result + 7; | ||
134 | for (c = 8; c > 0; c--,rp--,used >>= 1, ddr >>= 1) | ||
135 | if (used & 0x01) | ||
136 | *rp = io[ ddr & 0x01]; | ||
137 | else | ||
138 | *rp = '-'; | ||
139 | return result; | ||
140 | } | ||
141 | |||
142 | static int gpio_proc_show(struct seq_file *m, void *v) | ||
143 | { | ||
144 | static const char port_name[]="123456789ABCDEFGH"; | ||
145 | int c; | ||
146 | |||
147 | for (c = 0; c < MAX_PORT; c++) { | ||
148 | if (ddrs[c] == NULL) | ||
149 | continue; | ||
150 | seq_printf(m, "P%c: %s\n", port_name[c], port_status(c)); | ||
151 | } | ||
152 | return 0; | ||
153 | } | ||
154 | |||
155 | static int gpio_proc_open(struct inode *inode, struct file *file) | ||
156 | { | ||
157 | return single_open(file, gpio_proc_show, PDE_DATA(inode)); | ||
158 | } | ||
159 | |||
160 | static const struct file_operations gpio_proc_fops = { | ||
161 | .open = gpio_proc_open, | ||
162 | .read = seq_read, | ||
163 | .llseek = seq_lseek, | ||
164 | .release = single_release, | ||
165 | }; | ||
166 | |||
167 | static __init int register_proc(void) | ||
168 | { | ||
169 | return proc_create("gpio", S_IRUGO, NULL, &gpio_proc_fops) != NULL; | ||
170 | } | ||
171 | |||
172 | __initcall(register_proc); | ||
173 | #endif | ||
174 | |||
175 | void __init h8300_gpio_init(void) | ||
176 | { | ||
177 | memcpy(gpio_regs,_platform_gpio_table(sizeof(gpio_regs)),sizeof(gpio_regs)); | ||
178 | } | ||