1 files changed, 157 insertions, 0 deletions
diff --git a/drivers/input/serio/i8042-sparcio.h b/drivers/input/serio/i8042-sparcio.h
new file mode 100644
index 000000000..fce768128
--- /dev/null
+++ b/drivers/input/serio/i8042-sparcio.h
@@ -0,0 +1,157 @@
+/* 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;
+
+	for_each_child_of_node(op->dev.of_node, dp) {
+		if (of_node_name_eq(dp, OBP_PS2KBD_NAME1) ||
+		    of_node_name_eq(dp, 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 (of_node_name_eq(dp, OBP_PS2MS_NAME1) ||
+			   of_node_name_eq(dp, 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;
+		}
+	}
+
+	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("/");
+	const char *name = of_get_property(root, "name", NULL);
+
+	if (name && !strcmp(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("/");
+	const char *name = of_get_property(root, "name", NULL);
+
+	if (!name || strcmp(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 */