Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _I8042_SPARCIO_H
#define _I8042_SPARCIO_H
#include <linux/of_device.h>
#include <asm/io.h>
#include <asm/oplib.h>
#include <asm/prom.h>
static int i8042_kbd_irq = -1;
static int i8042_aux_irq = -1;
#define I8042_KBD_IRQ i8042_kbd_irq
#define I8042_AUX_IRQ i8042_aux_irq
#define I8042_KBD_PHYS_DESC "sparcps2/serio0"
#define I8042_AUX_PHYS_DESC "sparcps2/serio1"
#define I8042_MUX_PHYS_DESC "sparcps2/serio%d"
static void __iomem *kbd_iobase;
#define I8042_COMMAND_REG (kbd_iobase + 0x64UL)
#define I8042_DATA_REG (kbd_iobase + 0x60UL)
static inline int i8042_read_data(void)
{
return readb(kbd_iobase + 0x60UL);
}
static inline int i8042_read_status(void)
{
return readb(kbd_iobase + 0x64UL);
}
static inline void i8042_write_data(int val)
{
writeb(val, kbd_iobase + 0x60UL);
}
static inline void i8042_write_command(int val)
{
writeb(val, kbd_iobase + 0x64UL);
}
#ifdef CONFIG_PCI
static struct resource *kbd_res;
#define OBP_PS2KBD_NAME1 "kb_ps2"
#define OBP_PS2KBD_NAME2 "keyboard"
#define OBP_PS2MS_NAME1 "kdmouse"
#define OBP_PS2MS_NAME2 "mouse"
static int sparc_i8042_probe(struct platform_device *op)
{
struct device_node *dp = op->dev.of_node;
dp = dp->child;
while (dp) {
if (!strcmp(dp->name, OBP_PS2KBD_NAME1) ||
!strcmp(dp->name, OBP_PS2KBD_NAME2)) {
struct platform_device *kbd = of_find_device_by_node(dp);
unsigned int irq = kbd->archdata.irqs[0];
if (irq == 0xffffffff)
irq = op->archdata.irqs[0];
i8042_kbd_irq = irq;
kbd_iobase = of_ioremap(&kbd->resource[0],
0, 8, "kbd");
kbd_res = &kbd->resource[0];
} else if (!strcmp(dp->name, OBP_PS2MS_NAME1) ||
!strcmp(dp->name, OBP_PS2MS_NAME2)) {
struct platform_device *ms = of_find_device_by_node(dp);
unsigned int irq = ms->archdata.irqs[0];
if (irq == 0xffffffff)
irq = op->archdata.irqs[0];
i8042_aux_irq = irq;
}
dp = dp->sibling;
}
return 0;
}
static int sparc_i8042_remove(struct platform_device *op)
{
of_iounmap(kbd_res, kbd_iobase, 8);
return 0;
}
static const struct of_device_id sparc_i8042_match[] = {
{
.name = "8042",
},
{},
};
MODULE_DEVICE_TABLE(of, sparc_i8042_match);
static struct platform_driver sparc_i8042_driver = {
.driver = {
.name = "i8042",
.of_match_table = sparc_i8042_match,
},
.probe = sparc_i8042_probe,
.remove = sparc_i8042_remove,
};
static int __init i8042_platform_init(void)
{
struct device_node *root = of_find_node_by_path("/");
if (!strcmp(root->name, "SUNW,JavaStation-1")) {
/* Hardcoded values for MrCoffee. */
i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
kbd_iobase = ioremap(0x71300060, 8);
if (!kbd_iobase)
return -ENODEV;
} else {
int err = platform_driver_register(&sparc_i8042_driver);
if (err)
return err;
if (i8042_kbd_irq == -1 ||
i8042_aux_irq == -1) {
if (kbd_iobase) {
of_iounmap(kbd_res, kbd_iobase, 8);
kbd_iobase = (void __iomem *) NULL;
}
return -ENODEV;
}
}
i8042_reset = I8042_RESET_ALWAYS;
return 0;
}
static inline void i8042_platform_exit(void)
{
struct device_node *root = of_find_node_by_path("/");
if (strcmp(root->name, "SUNW,JavaStation-1"))
platform_driver_unregister(&sparc_i8042_driver);
}
#else /* !CONFIG_PCI */
static int __init i8042_platform_init(void)
{
return -ENODEV;
}
static inline void i8042_platform_exit(void)
{
}
#endif /* !CONFIG_PCI */
#endif /* _I8042_SPARCIO_H */
|