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