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path: root/drivers/input/keyboard/newtonkbd.c
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Diffstat (limited to 'drivers/input/keyboard/newtonkbd.c')
-rw-r--r--drivers/input/keyboard/newtonkbd.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/drivers/input/keyboard/newtonkbd.c b/drivers/input/keyboard/newtonkbd.c
new file mode 100644
index 000000000..df00a119a
--- /dev/null
+++ b/drivers/input/keyboard/newtonkbd.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2000 Justin Cormack
+ */
+
+/*
+ * Newton keyboard driver for Linux
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+
+#define DRIVER_DESC "Newton keyboard driver"
+
+MODULE_AUTHOR("Justin Cormack <j.cormack@doc.ic.ac.uk>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+#define NKBD_KEY 0x7f
+#define NKBD_PRESS 0x80
+
+static unsigned char nkbd_keycode[128] = {
+ KEY_A, KEY_S, KEY_D, KEY_F, KEY_H, KEY_G, KEY_Z, KEY_X,
+ KEY_C, KEY_V, 0, KEY_B, KEY_Q, KEY_W, KEY_E, KEY_R,
+ KEY_Y, KEY_T, KEY_1, KEY_2, KEY_3, KEY_4, KEY_6, KEY_5,
+ KEY_EQUAL, KEY_9, KEY_7, KEY_MINUS, KEY_8, KEY_0, KEY_RIGHTBRACE, KEY_O,
+ KEY_U, KEY_LEFTBRACE, KEY_I, KEY_P, KEY_ENTER, KEY_L, KEY_J, KEY_APOSTROPHE,
+ KEY_K, KEY_SEMICOLON, KEY_BACKSLASH, KEY_COMMA, KEY_SLASH, KEY_N, KEY_M, KEY_DOT,
+ KEY_TAB, KEY_SPACE, KEY_GRAVE, KEY_DELETE, 0, 0, 0, KEY_LEFTMETA,
+ KEY_LEFTSHIFT, KEY_CAPSLOCK, KEY_LEFTALT, KEY_LEFTCTRL, KEY_RIGHTSHIFT, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ KEY_LEFT, KEY_RIGHT, KEY_DOWN, KEY_UP, 0
+};
+
+struct nkbd {
+ unsigned char keycode[128];
+ struct input_dev *dev;
+ struct serio *serio;
+ char phys[32];
+};
+
+static irqreturn_t nkbd_interrupt(struct serio *serio,
+ unsigned char data, unsigned int flags)
+{
+ struct nkbd *nkbd = serio_get_drvdata(serio);
+
+ /* invalid scan codes are probably the init sequence, so we ignore them */
+ if (nkbd->keycode[data & NKBD_KEY]) {
+ input_report_key(nkbd->dev, nkbd->keycode[data & NKBD_KEY], data & NKBD_PRESS);
+ input_sync(nkbd->dev);
+ }
+
+ else if (data == 0xe7) /* end of init sequence */
+ printk(KERN_INFO "input: %s on %s\n", nkbd->dev->name, serio->phys);
+ return IRQ_HANDLED;
+
+}
+
+static int nkbd_connect(struct serio *serio, struct serio_driver *drv)
+{
+ struct nkbd *nkbd;
+ struct input_dev *input_dev;
+ int err = -ENOMEM;
+ int i;
+
+ nkbd = kzalloc(sizeof(struct nkbd), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!nkbd || !input_dev)
+ goto fail1;
+
+ nkbd->serio = serio;
+ nkbd->dev = input_dev;
+ snprintf(nkbd->phys, sizeof(nkbd->phys), "%s/input0", serio->phys);
+ memcpy(nkbd->keycode, nkbd_keycode, sizeof(nkbd->keycode));
+
+ input_dev->name = "Newton Keyboard";
+ input_dev->phys = nkbd->phys;
+ input_dev->id.bustype = BUS_RS232;
+ input_dev->id.vendor = SERIO_NEWTON;
+ input_dev->id.product = 0x0001;
+ input_dev->id.version = 0x0100;
+ input_dev->dev.parent = &serio->dev;
+
+ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
+ input_dev->keycode = nkbd->keycode;
+ input_dev->keycodesize = sizeof(unsigned char);
+ input_dev->keycodemax = ARRAY_SIZE(nkbd_keycode);
+ for (i = 0; i < 128; i++)
+ set_bit(nkbd->keycode[i], input_dev->keybit);
+ clear_bit(0, input_dev->keybit);
+
+ serio_set_drvdata(serio, nkbd);
+
+ err = serio_open(serio, drv);
+ if (err)
+ goto fail2;
+
+ err = input_register_device(nkbd->dev);
+ if (err)
+ goto fail3;
+
+ return 0;
+
+ fail3: serio_close(serio);
+ fail2: serio_set_drvdata(serio, NULL);
+ fail1: input_free_device(input_dev);
+ kfree(nkbd);
+ return err;
+}
+
+static void nkbd_disconnect(struct serio *serio)
+{
+ struct nkbd *nkbd = serio_get_drvdata(serio);
+
+ serio_close(serio);
+ serio_set_drvdata(serio, NULL);
+ input_unregister_device(nkbd->dev);
+ kfree(nkbd);
+}
+
+static const struct serio_device_id nkbd_serio_ids[] = {
+ {
+ .type = SERIO_RS232,
+ .proto = SERIO_NEWTON,
+ .id = SERIO_ANY,
+ .extra = SERIO_ANY,
+ },
+ { 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, nkbd_serio_ids);
+
+static struct serio_driver nkbd_drv = {
+ .driver = {
+ .name = "newtonkbd",
+ },
+ .description = DRIVER_DESC,
+ .id_table = nkbd_serio_ids,
+ .interrupt = nkbd_interrupt,
+ .connect = nkbd_connect,
+ .disconnect = nkbd_disconnect,
+};
+
+module_serio_driver(nkbd_drv);