Input: add driver for stowaway serial keyboards

Add support for stowaway and stowaway compatible (eg. dicota inutPDA)
serial keyboards. Reported to work on palm zire71 and palm tungsten T3.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

3 files changed, 199 insertions, 0 deletions

diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index a9dda56f62c4..ebd98d18cf0b 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -121,6 +121,17 @@ config KEYBOARD_NEWTON
           To compile this driver as a module, choose M here: the
           module will be called newtonkbd.
 
+config KEYBOARD_STOWAWAY
+        tristate "Stowaway keyboard"
+        select SERIO
+        help
+          Say Y here if you have a Stowaway keyboard on a serial port.
+          Stowaway compatible keyboards like Dicota Input-PDA keyboard
+          are also supported by this driver.
+
+          To compile this driver as a module, choose M here: the
+          module will be called stowaway.
+
 config KEYBOARD_CORGI
         tristate "Corgi keyboard"
         depends on PXA_SHARPSL
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index 2708167ba175..bb4525e59df7 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_KEYBOARD_XTKBD)		+= xtkbd.o
 obj-$(CONFIG_KEYBOARD_AMIGA)            += amikbd.o
 obj-$(CONFIG_KEYBOARD_LOCOMO)           += locomokbd.o
 obj-$(CONFIG_KEYBOARD_NEWTON)           += newtonkbd.o
+obj-$(CONFIG_KEYBOARD_STOWAWAY)         += stowaway.o
 obj-$(CONFIG_KEYBOARD_CORGI)            += corgikbd.o
 obj-$(CONFIG_KEYBOARD_SPITZ)            += spitzkbd.o
 obj-$(CONFIG_KEYBOARD_HIL)              += hil_kbd.o
diff --git a/drivers/input/keyboard/stowaway.c b/drivers/input/keyboard/stowaway.c
new file mode 100644
index 000000000000..04c54c57f25c
--- /dev/null
+++ b/drivers/input/keyboard/stowaway.c
@@ -0,0 +1,187 @@
+/*
+ * Stowaway keyboard driver for Linux
+ */
+
+/*
+ *  Copyright (c) 2006 Marek Vasut
+ *
+ *  Based on Newton keyboard driver for Linux
+ *  by Justin Cormack
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <marek.vasut@gmail.com>, or by paper mail:
+ * Marek Vasut, Liskovecka 559, Frydek-Mistek, 738 01 Czech Republic
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/init.h>
+#include <linux/serio.h>
+
+#define DRIVER_DESC     "Stowaway keyboard driver"
+
+MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+#define SKBD_KEY_MASK   0x7f
+#define SKBD_RELEASE    0x80
+
+static unsigned char skbd_keycode[128] = {
+        KEY_1, KEY_2, KEY_3, KEY_Z, KEY_4, KEY_5, KEY_6, KEY_7,
+        0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_GRAVE,
+        KEY_X, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_SPACE,
+        KEY_CAPSLOCK, KEY_TAB, KEY_LEFTCTRL, 0, 0, 0, 0, 0,
+        0, 0, 0, KEY_LEFTALT, 0, 0, 0, 0,
+        0, 0, 0, 0, KEY_C, KEY_V, KEY_B, KEY_N,
+        KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE, KEY_HOME, KEY_8, KEY_9, KEY_0, KEY_ESC,
+        KEY_LEFTBRACE, KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_END, KEY_U, KEY_I, KEY_O, KEY_P,
+        KEY_APOSTROPHE, KEY_ENTER, KEY_PAGEUP,0, KEY_J, KEY_K, KEY_L, KEY_SEMICOLON,
+        KEY_SLASH, KEY_UP, KEY_PAGEDOWN, 0,KEY_M, KEY_COMMA, KEY_DOT, KEY_INSERT,
+        KEY_DELETE, KEY_LEFT, KEY_DOWN, KEY_RIGHT,  0, 0, 0,
+        KEY_LEFTSHIFT, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7,
+        KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, 0, 0, 0
+};
+
+struct skbd {
+        unsigned char keycode[128];
+        struct input_dev *dev;
+        struct serio *serio;
+        char phys[32];
+};
+
+static irqreturn_t skbd_interrupt(struct serio *serio, unsigned char data,
+                                  unsigned int flags, struct pt_regs *regs)
+{
+        struct skbd *skbd = serio_get_drvdata(serio);
+        struct input_dev *dev = skbd->dev;
+
+        if (skbd->keycode[data & SKBD_KEY_MASK]) {
+                input_regs(dev, regs);
+                input_report_key(dev, skbd->keycode[data & SKBD_KEY_MASK],
+                                 !(data & SKBD_RELEASE));
+                input_sync(dev);
+        }
+
+        return IRQ_HANDLED;
+}
+
+static int skbd_connect(struct serio *serio, struct serio_driver *drv)
+{
+        struct skbd *skbd;
+        struct input_dev *input_dev;
+        int err = -ENOMEM;
+        int i;
+
+        skbd = kzalloc(sizeof(struct skbd), GFP_KERNEL);
+        input_dev = input_allocate_device();
+        if (!skbd || !input_dev)
+                goto fail1;
+
+        skbd->serio = serio;
+        skbd->dev = input_dev;
+        snprintf(skbd->phys, sizeof(skbd->phys), "%s/input0", serio->phys);
+        memcpy(skbd->keycode, skbd_keycode, sizeof(skbd->keycode));
+
+        input_dev->name = "Stowaway Keyboard";
+        input_dev->phys = skbd->phys;
+        input_dev->id.bustype = BUS_RS232;
+        input_dev->id.vendor = SERIO_STOWAWAY;
+        input_dev->id.product = 0x0001;
+        input_dev->id.version = 0x0100;
+        input_dev->cdev.dev = &serio->dev;
+        input_dev->private = skbd;
+
+        input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
+        input_dev->keycode = skbd->keycode;
+        input_dev->keycodesize = sizeof(unsigned char);
+        input_dev->keycodemax = ARRAY_SIZE(skbd_keycode);
+        for (i = 0; i < ARRAY_SIZE(skbd_keycode); i++)
+                set_bit(skbd_keycode[i], input_dev->keybit);
+        clear_bit(0, input_dev->keybit);
+
+        serio_set_drvdata(serio, skbd);
+
+        err = serio_open(serio, drv);
+        if (err)
+                goto fail2;
+
+        err = input_register_device(skbd->dev);
+        if (err)
+                goto fail3;
+
+        return 0;
+
+ fail3: serio_close(serio);
+ fail2: serio_set_drvdata(serio, NULL);
+ fail1: input_free_device(input_dev);
+        kfree(skbd);
+        return err;
+}
+
+static void skbd_disconnect(struct serio *serio)
+{
+        struct skbd *skbd = serio_get_drvdata(serio);
+
+        serio_close(serio);
+        serio_set_drvdata(serio, NULL);
+        input_unregister_device(skbd->dev);
+        kfree(skbd);
+}
+
+static struct serio_device_id skbd_serio_ids[] = {
+        {
+                .type   = SERIO_RS232,
+                .proto  = SERIO_STOWAWAY,
+                .id     = SERIO_ANY,
+                .extra  = SERIO_ANY,
+        },
+        { 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, skbd_serio_ids);
+
+static struct serio_driver skbd_drv = {
+        .driver         = {
+                .name   = "stowaway",
+        },
+        .description    = DRIVER_DESC,
+        .id_table       = skbd_serio_ids,
+        .interrupt      = skbd_interrupt,
+        .connect        = skbd_connect,
+        .disconnect     = skbd_disconnect,
+};
+
+static int __init skbd_init(void)
+{
+        serio_register_driver(&skbd_drv);
+        return 0;
+}
+
+static void __exit skbd_exit(void)
+{
+        serio_unregister_driver(&skbd_drv);
+}
+
+module_init(skbd_init);
+module_exit(skbd_exit);