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 <linux/of_device.h>
5
6#include <asm/io.h>
7#include <asm/oplib.h>
8#include <asm/prom.h>
9
10static int i8042_kbd_irq = -1;
11static 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
19static void __iomem *kbd_iobase;
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#ifdef CONFIG_PCI
45
46static 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
53static 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
84static int sparc_i8042_remove(struct platform_device *op)
85{
86 of_iounmap(kbd_res, kbd_iobase, 8);
87
88 return 0;
89}
90
91static const struct of_device_id sparc_i8042_match[] = {
92 {
93 .name = "8042",
94 },
95 {},
96};
97MODULE_DEVICE_TABLE(of, sparc_i8042_match);
98
99static struct platform_driver sparc_i8042_driver = {
100 .driver = {
101 .name = "i8042",
102 .owner = THIS_MODULE,
103 .of_match_table = sparc_i8042_match,
104 },
105 .probe = sparc_i8042_probe,
106 .remove = sparc_i8042_remove,
107};
108
109static int __init i8042_platform_init(void)
110{
111 struct device_node *root = of_find_node_by_path("/");
112
113 if (!strcmp(root->name, "SUNW,JavaStation-1")) {
114 /* Hardcoded values for MrCoffee. */
115 i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
116 kbd_iobase = ioremap(0x71300060, 8);
117 if (!kbd_iobase)
118 return -ENODEV;
119 } else {
120 int err = platform_driver_register(&sparc_i8042_driver);
121 if (err)
122 return err;
123
124 if (i8042_kbd_irq == -1 ||
125 i8042_aux_irq == -1) {
126 if (kbd_iobase) {
127 of_iounmap(kbd_res, kbd_iobase, 8);
128 kbd_iobase = (void __iomem *) NULL;
129 }
130 return -ENODEV;
131 }
132 }
133
134 i8042_reset = 1;
135
136 return 0;
137}
138
139static inline void i8042_platform_exit(void)
140{
141 struct device_node *root = of_find_node_by_path("/");
142
143 if (strcmp(root->name, "SUNW,JavaStation-1"))
144 platform_driver_unregister(&sparc_i8042_driver);
145}
146
147#else /* !CONFIG_PCI */
148static int __init i8042_platform_init(void)
149{
150 return -ENODEV;
151}
152
153static inline void i8042_platform_exit(void)
154{
155}
156#endif /* !CONFIG_PCI */
157
158#endif /* _I8042_SPARCIO_H */