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