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 
9 static int i8042_kbd_irq = -1;
10 static 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 
18 static void __iomem *kbd_iobase;
19 static struct resource *kbd_res;
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 #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 
49 static 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 
80 static int __devexit sparc_i8042_remove(struct of_device *op)
81 {
82 	of_iounmap(kbd_res, kbd_iobase, 8);
83 
84 	return 0;
85 }
86 
87 static struct of_device_id sparc_i8042_match[] = {
88 	{
89 		.name = "8042",
90 	},
91 	{},
92 };
93 MODULE_DEVICE_TABLE(of, sparc_i8042_match);
94 
95 static 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 
102 static 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 
137 static 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 */
148