Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[linux-2.6-block.git] / drivers / input / serio / i8042-sparcio.h
1 #ifndef _I8042_SPARCIO_H
2 #define _I8042_SPARCIO_H
3
4 #include <linux/of_device.h>
5
6 #include <asm/io.h>
7 #include <asm/oplib.h>
8 #include <asm/prom.h>
9
10 static int i8042_kbd_irq = -1;
11 static int i8042_aux_irq = -1;
12 #define I8042_KBD_IRQ i8042_kbd_irq
13 #define I8042_AUX_IRQ i8042_aux_irq
14
15 #define I8042_KBD_PHYS_DESC "sparcps2/serio0"
16 #define I8042_AUX_PHYS_DESC "sparcps2/serio1"
17 #define I8042_MUX_PHYS_DESC "sparcps2/serio%d"
18
19 static void __iomem *kbd_iobase;
20
21 #define I8042_COMMAND_REG       (kbd_iobase + 0x64UL)
22 #define I8042_DATA_REG          (kbd_iobase + 0x60UL)
23
24 static inline int i8042_read_data(void)
25 {
26         return readb(kbd_iobase + 0x60UL);
27 }
28
29 static inline int i8042_read_status(void)
30 {
31         return readb(kbd_iobase + 0x64UL);
32 }
33
34 static inline void i8042_write_data(int val)
35 {
36         writeb(val, kbd_iobase + 0x60UL);
37 }
38
39 static inline void i8042_write_command(int val)
40 {
41         writeb(val, kbd_iobase + 0x64UL);
42 }
43
44 #ifdef CONFIG_PCI
45
46 static struct resource *kbd_res;
47
48 #define OBP_PS2KBD_NAME1        "kb_ps2"
49 #define OBP_PS2KBD_NAME2        "keyboard"
50 #define OBP_PS2MS_NAME1         "kdmouse"
51 #define OBP_PS2MS_NAME2         "mouse"
52
53 static int sparc_i8042_probe(struct platform_device *op)
54 {
55         struct device_node *dp = op->dev.of_node;
56
57         dp = dp->child;
58         while (dp) {
59                 if (!strcmp(dp->name, OBP_PS2KBD_NAME1) ||
60                     !strcmp(dp->name, OBP_PS2KBD_NAME2)) {
61                         struct platform_device *kbd = of_find_device_by_node(dp);
62                         unsigned int irq = kbd->archdata.irqs[0];
63                         if (irq == 0xffffffff)
64                                 irq = op->archdata.irqs[0];
65                         i8042_kbd_irq = irq;
66                         kbd_iobase = of_ioremap(&kbd->resource[0],
67                                                 0, 8, "kbd");
68                         kbd_res = &kbd->resource[0];
69                 } else if (!strcmp(dp->name, OBP_PS2MS_NAME1) ||
70                            !strcmp(dp->name, OBP_PS2MS_NAME2)) {
71                         struct platform_device *ms = of_find_device_by_node(dp);
72                         unsigned int irq = ms->archdata.irqs[0];
73                         if (irq == 0xffffffff)
74                                 irq = op->archdata.irqs[0];
75                         i8042_aux_irq = irq;
76                 }
77
78                 dp = dp->sibling;
79         }
80
81         return 0;
82 }
83
84 static int sparc_i8042_remove(struct platform_device *op)
85 {
86         of_iounmap(kbd_res, kbd_iobase, 8);
87
88         return 0;
89 }
90
91 static const struct of_device_id sparc_i8042_match[] = {
92         {
93                 .name = "8042",
94         },
95         {},
96 };
97 MODULE_DEVICE_TABLE(of, sparc_i8042_match);
98
99 static struct platform_driver sparc_i8042_driver = {
100         .driver = {
101                 .name = "i8042",
102                 .of_match_table = sparc_i8042_match,
103         },
104         .probe          = sparc_i8042_probe,
105         .remove         = sparc_i8042_remove,
106 };
107
108 static int __init i8042_platform_init(void)
109 {
110         struct device_node *root = of_find_node_by_path("/");
111
112         if (!strcmp(root->name, "SUNW,JavaStation-1")) {
113                 /* Hardcoded values for MrCoffee.  */
114                 i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
115                 kbd_iobase = ioremap(0x71300060, 8);
116                 if (!kbd_iobase)
117                         return -ENODEV;
118         } else {
119                 int err = platform_driver_register(&sparc_i8042_driver);
120                 if (err)
121                         return err;
122
123                 if (i8042_kbd_irq == -1 ||
124                     i8042_aux_irq == -1) {
125                         if (kbd_iobase) {
126                                 of_iounmap(kbd_res, kbd_iobase, 8);
127                                 kbd_iobase = (void __iomem *) NULL;
128                         }
129                         return -ENODEV;
130                 }
131         }
132
133         i8042_reset = 1;
134
135         return 0;
136 }
137
138 static inline void i8042_platform_exit(void)
139 {
140         struct device_node *root = of_find_node_by_path("/");
141
142         if (strcmp(root->name, "SUNW,JavaStation-1"))
143                 platform_driver_unregister(&sparc_i8042_driver);
144 }
145
146 #else /* !CONFIG_PCI */
147 static int __init i8042_platform_init(void)
148 {
149         return -ENODEV;
150 }
151
152 static inline void i8042_platform_exit(void)
153 {
154 }
155 #endif /* !CONFIG_PCI */
156
157 #endif /* _I8042_SPARCIO_H */