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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.h>
6#include <linux/of_platform.h>
7#include <linux/platform_device.h>
8#include <linux/types.h>
9
10#include <asm/io.h>
11#include <asm/oplib.h>
12#include <asm/prom.h>
13
14static int i8042_kbd_irq = -1;
15static int i8042_aux_irq = -1;
16#define I8042_KBD_IRQ i8042_kbd_irq
17#define I8042_AUX_IRQ i8042_aux_irq
18
19#define I8042_KBD_PHYS_DESC "sparcps2/serio0"
20#define I8042_AUX_PHYS_DESC "sparcps2/serio1"
21#define I8042_MUX_PHYS_DESC "sparcps2/serio%d"
22
23static void __iomem *kbd_iobase;
24
25#define I8042_COMMAND_REG (kbd_iobase + 0x64UL)
26#define I8042_DATA_REG (kbd_iobase + 0x60UL)
27
28static inline int i8042_read_data(void)
29{
30 return readb(kbd_iobase + 0x60UL);
31}
32
33static inline int i8042_read_status(void)
34{
35 return readb(kbd_iobase + 0x64UL);
36}
37
38static inline void i8042_write_data(int val)
39{
40 writeb(val, kbd_iobase + 0x60UL);
41}
42
43static inline void i8042_write_command(int val)
44{
45 writeb(val, kbd_iobase + 0x64UL);
46}
47
48#ifdef CONFIG_PCI
49
50static struct resource *kbd_res;
51
52#define OBP_PS2KBD_NAME1 "kb_ps2"
53#define OBP_PS2KBD_NAME2 "keyboard"
54#define OBP_PS2MS_NAME1 "kdmouse"
55#define OBP_PS2MS_NAME2 "mouse"
56
57static int sparc_i8042_probe(struct platform_device *op)
58{
59 struct device_node *dp;
60
61 for_each_child_of_node(op->dev.of_node, dp) {
62 if (of_node_name_eq(dp, OBP_PS2KBD_NAME1) ||
63 of_node_name_eq(dp, OBP_PS2KBD_NAME2)) {
64 struct platform_device *kbd = of_find_device_by_node(dp);
65 unsigned int irq = kbd->archdata.irqs[0];
66 if (irq == 0xffffffff)
67 irq = op->archdata.irqs[0];
68 i8042_kbd_irq = irq;
69 kbd_iobase = of_ioremap(&kbd->resource[0],
70 0, 8, "kbd");
71 kbd_res = &kbd->resource[0];
72 } else if (of_node_name_eq(dp, OBP_PS2MS_NAME1) ||
73 of_node_name_eq(dp, OBP_PS2MS_NAME2)) {
74 struct platform_device *ms = of_find_device_by_node(dp);
75 unsigned int irq = ms->archdata.irqs[0];
76 if (irq == 0xffffffff)
77 irq = op->archdata.irqs[0];
78 i8042_aux_irq = irq;
79 }
80 }
81
82 return 0;
83}
84
85static void sparc_i8042_remove(struct platform_device *op)
86{
87 of_iounmap(kbd_res, kbd_iobase, 8);
88}
89
90static const struct of_device_id sparc_i8042_match[] = {
91 {
92 .name = "8042",
93 },
94 {},
95};
96MODULE_DEVICE_TABLE(of, sparc_i8042_match);
97
98static struct platform_driver sparc_i8042_driver = {
99 .driver = {
100 .name = "i8042",
101 .of_match_table = sparc_i8042_match,
102 },
103 .probe = sparc_i8042_probe,
104 .remove_new = sparc_i8042_remove,
105};
106
107static bool i8042_is_mr_coffee(void)
108{
109 struct device_node *root;
110 const char *name;
111 bool is_mr_coffee;
112
113 root = of_find_node_by_path("/");
114
115 name = of_get_property(root, "name", NULL);
116 is_mr_coffee = name && !strcmp(name, "SUNW,JavaStation-1");
117
118 of_node_put(root);
119
120 return is_mr_coffee;
121}
122
123static int __init i8042_platform_init(void)
124{
125 if (i8042_is_mr_coffee()) {
126 /* Hardcoded values for MrCoffee. */
127 i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
128 kbd_iobase = ioremap(0x71300060, 8);
129 if (!kbd_iobase)
130 return -ENODEV;
131 } else {
132 int err = platform_driver_register(&sparc_i8042_driver);
133 if (err)
134 return err;
135
136 if (i8042_kbd_irq == -1 ||
137 i8042_aux_irq == -1) {
138 if (kbd_iobase) {
139 of_iounmap(kbd_res, kbd_iobase, 8);
140 kbd_iobase = (void __iomem *) NULL;
141 }
142 return -ENODEV;
143 }
144 }
145
146 i8042_reset = I8042_RESET_ALWAYS;
147
148 return 0;
149}
150
151static inline void i8042_platform_exit(void)
152{
153 if (!i8042_is_mr_coffee())
154 platform_driver_unregister(&sparc_i8042_driver);
155}
156
157#else /* !CONFIG_PCI */
158static int __init i8042_platform_init(void)
159{
160 return -ENODEV;
161}
162
163static inline void i8042_platform_exit(void)
164{
165}
166#endif /* !CONFIG_PCI */
167
168#endif /* _I8042_SPARCIO_H */
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 */