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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _I8042_SPARCIO_H
3#define _I8042_SPARCIO_H
4
5#include <linux/of_device.h>
6
7#include <asm/io.h>
8#include <asm/oplib.h>
9#include <asm/prom.h>
10
11static int i8042_kbd_irq = -1;
12static int i8042_aux_irq = -1;
13#define I8042_KBD_IRQ i8042_kbd_irq
14#define I8042_AUX_IRQ i8042_aux_irq
15
16#define I8042_KBD_PHYS_DESC "sparcps2/serio0"
17#define I8042_AUX_PHYS_DESC "sparcps2/serio1"
18#define I8042_MUX_PHYS_DESC "sparcps2/serio%d"
19
20static void __iomem *kbd_iobase;
21
22#define I8042_COMMAND_REG (kbd_iobase + 0x64UL)
23#define I8042_DATA_REG (kbd_iobase + 0x60UL)
24
25static inline int i8042_read_data(void)
26{
27 return readb(kbd_iobase + 0x60UL);
28}
29
30static inline int i8042_read_status(void)
31{
32 return readb(kbd_iobase + 0x64UL);
33}
34
35static inline void i8042_write_data(int val)
36{
37 writeb(val, kbd_iobase + 0x60UL);
38}
39
40static inline void i8042_write_command(int val)
41{
42 writeb(val, kbd_iobase + 0x64UL);
43}
44
45#ifdef CONFIG_PCI
46
47static struct resource *kbd_res;
48
49#define OBP_PS2KBD_NAME1 "kb_ps2"
50#define OBP_PS2KBD_NAME2 "keyboard"
51#define OBP_PS2MS_NAME1 "kdmouse"
52#define OBP_PS2MS_NAME2 "mouse"
53
54static int sparc_i8042_probe(struct platform_device *op)
55{
56 struct device_node *dp;
57
58 for_each_child_of_node(op->dev.of_node, dp) {
59 if (of_node_name_eq(dp, OBP_PS2KBD_NAME1) ||
60 of_node_name_eq(dp, 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 (of_node_name_eq(dp, OBP_PS2MS_NAME1) ||
70 of_node_name_eq(dp, 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
79 return 0;
80}
81
82static int sparc_i8042_remove(struct platform_device *op)
83{
84 of_iounmap(kbd_res, kbd_iobase, 8);
85
86 return 0;
87}
88
89static const struct of_device_id sparc_i8042_match[] = {
90 {
91 .name = "8042",
92 },
93 {},
94};
95MODULE_DEVICE_TABLE(of, sparc_i8042_match);
96
97static struct platform_driver sparc_i8042_driver = {
98 .driver = {
99 .name = "i8042",
100 .of_match_table = sparc_i8042_match,
101 },
102 .probe = sparc_i8042_probe,
103 .remove = sparc_i8042_remove,
104};
105
106static int __init i8042_platform_init(void)
107{
108 struct device_node *root = of_find_node_by_path("/");
109 const char *name = of_get_property(root, "name", NULL);
110
111 if (name && !strcmp(name, "SUNW,JavaStation-1")) {
112 /* Hardcoded values for MrCoffee. */
113 i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
114 kbd_iobase = ioremap(0x71300060, 8);
115 if (!kbd_iobase)
116 return -ENODEV;
117 } else {
118 int err = platform_driver_register(&sparc_i8042_driver);
119 if (err)
120 return err;
121
122 if (i8042_kbd_irq == -1 ||
123 i8042_aux_irq == -1) {
124 if (kbd_iobase) {
125 of_iounmap(kbd_res, kbd_iobase, 8);
126 kbd_iobase = (void __iomem *) NULL;
127 }
128 return -ENODEV;
129 }
130 }
131
132 i8042_reset = I8042_RESET_ALWAYS;
133
134 return 0;
135}
136
137static inline void i8042_platform_exit(void)
138{
139 struct device_node *root = of_find_node_by_path("/");
140 const char *name = of_get_property(root, "name", NULL);
141
142 if (!name || strcmp(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

Warning: That file was not part of the compilation database. It may have many parsing errors.