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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/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _I8042_SPARCIO_H
3#define _I8042_SPARCIO_H
4
5#include <linux/of_device.h>
6#include <linux/types.h>
7
8#include <asm/io.h>
9#include <asm/oplib.h>
10#include <asm/prom.h>
11
12static int i8042_kbd_irq = -1;
13static int i8042_aux_irq = -1;
14#define I8042_KBD_IRQ i8042_kbd_irq
15#define I8042_AUX_IRQ i8042_aux_irq
16
17#define I8042_KBD_PHYS_DESC "sparcps2/serio0"
18#define I8042_AUX_PHYS_DESC "sparcps2/serio1"
19#define I8042_MUX_PHYS_DESC "sparcps2/serio%d"
20
21static void __iomem *kbd_iobase;
22
23#define I8042_COMMAND_REG (kbd_iobase + 0x64UL)
24#define I8042_DATA_REG (kbd_iobase + 0x60UL)
25
26static inline int i8042_read_data(void)
27{
28 return readb(kbd_iobase + 0x60UL);
29}
30
31static inline int i8042_read_status(void)
32{
33 return readb(kbd_iobase + 0x64UL);
34}
35
36static inline void i8042_write_data(int val)
37{
38 writeb(val, kbd_iobase + 0x60UL);
39}
40
41static inline void i8042_write_command(int val)
42{
43 writeb(val, kbd_iobase + 0x64UL);
44}
45
46#ifdef CONFIG_PCI
47
48static struct resource *kbd_res;
49
50#define OBP_PS2KBD_NAME1 "kb_ps2"
51#define OBP_PS2KBD_NAME2 "keyboard"
52#define OBP_PS2MS_NAME1 "kdmouse"
53#define OBP_PS2MS_NAME2 "mouse"
54
55static int sparc_i8042_probe(struct platform_device *op)
56{
57 struct device_node *dp;
58
59 for_each_child_of_node(op->dev.of_node, dp) {
60 if (of_node_name_eq(dp, OBP_PS2KBD_NAME1) ||
61 of_node_name_eq(dp, OBP_PS2KBD_NAME2)) {
62 struct platform_device *kbd = of_find_device_by_node(dp);
63 unsigned int irq = kbd->archdata.irqs[0];
64 if (irq == 0xffffffff)
65 irq = op->archdata.irqs[0];
66 i8042_kbd_irq = irq;
67 kbd_iobase = of_ioremap(&kbd->resource[0],
68 0, 8, "kbd");
69 kbd_res = &kbd->resource[0];
70 } else if (of_node_name_eq(dp, OBP_PS2MS_NAME1) ||
71 of_node_name_eq(dp, OBP_PS2MS_NAME2)) {
72 struct platform_device *ms = of_find_device_by_node(dp);
73 unsigned int irq = ms->archdata.irqs[0];
74 if (irq == 0xffffffff)
75 irq = op->archdata.irqs[0];
76 i8042_aux_irq = irq;
77 }
78 }
79
80 return 0;
81}
82
83static int sparc_i8042_remove(struct platform_device *op)
84{
85 of_iounmap(kbd_res, kbd_iobase, 8);
86
87 return 0;
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 = 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 */