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		.of_match_table = sparc_i8042_match,
103	},
104	.probe		= sparc_i8042_probe,
105	.remove		= sparc_i8042_remove,
106};
107
108static 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
138static 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 */
147static int __init i8042_platform_init(void)
148{
149	return -ENODEV;
150}
151
152static inline void i8042_platform_exit(void)
153{
154}
155#endif /* !CONFIG_PCI */
156
157#endif /* _I8042_SPARCIO_H */
158