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path: root/drivers/input/serio/i8042-sparcio.h
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Diffstat (limited to 'drivers/input/serio/i8042-sparcio.h')
-rw-r--r--drivers/input/serio/i8042-sparcio.h168
1 files changed, 168 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..c712c1fe0
--- /dev/null
+++ b/drivers/input/serio/i8042-sparcio.h
@@ -0,0 +1,168 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _I8042_SPARCIO_H
+#define _I8042_SPARCIO_H
+
+#include <linux/of_device.h>
+#include <linux/types.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 bool i8042_is_mr_coffee(void)
+{
+ struct device_node *root;
+ const char *name;
+ bool is_mr_coffee;
+
+ root = of_find_node_by_path("/");
+
+ name = of_get_property(root, "name", NULL);
+ is_mr_coffee = name && !strcmp(name, "SUNW,JavaStation-1");
+
+ of_node_put(root);
+
+ return is_mr_coffee;
+}
+
+static int __init i8042_platform_init(void)
+{
+ if (i8042_is_mr_coffee()) {
+ /* 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)
+{
+ if (!i8042_is_mr_coffee())
+ 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 */