m68k: Atari keyboard and mouse support.

Atari keyboard and mouse support.
(reformating and Kconfig fixes by Roman Zippel)

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 146 insertions, 0 deletions

diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index f17e9c7d4b36..c845d5c4cbba 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -164,6 +164,17 @@ config KEYBOARD_AMIGA
           To compile this driver as a module, choose M here: the
           module will be called amikbd.
 
+config KEYBOARD_ATARI
+        tristate "Atari keyboard"
+        depends on ATARI
+        select ATARI_KBD_CORE
+        help
+          Say Y here if you are running Linux on any Atari and have a keyboard
+          attached.
+
+          To compile this driver as a module, choose M here: the
+          module will be called atakbd.
+
 config KEYBOARD_HIL_OLD
         tristate "HP HIL keyboard support (simple driver)"
         depends on GSC || HP300
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index 586a0fe53be6..7aa59ee5a0b6 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_KEYBOARD_SUNKBD)		+= sunkbd.o
 obj-$(CONFIG_KEYBOARD_LKKBD)            += lkkbd.o
 obj-$(CONFIG_KEYBOARD_XTKBD)            += xtkbd.o
 obj-$(CONFIG_KEYBOARD_AMIGA)            += amikbd.o
+obj-$(CONFIG_KEYBOARD_ATARI)            += atakbd.o
 obj-$(CONFIG_KEYBOARD_LOCOMO)           += locomokbd.o
 obj-$(CONFIG_KEYBOARD_NEWTON)           += newtonkbd.o
 obj-$(CONFIG_KEYBOARD_STOWAWAY)         += stowaway.o
diff --git a/drivers/input/keyboard/atakbd.c b/drivers/input/keyboard/atakbd.c
new file mode 100644
index 000000000000..ded1d6ac6ff3
--- /dev/null
+++ b/drivers/input/keyboard/atakbd.c
@@ -0,0 +1,134 @@
+/*
+ *  atakbd.c
+ *
+ *  Copyright (c) 2005 Michael Schmitz
+ *
+ * Based on amikbd.c, which is
+ *
+ *  Copyright (c) 2000-2001 Vojtech Pavlik
+ *
+ *  Based on the work of:
+ *      Hamish Macdonald
+ */
+
+/*
+ * Atari keyboard driver for Linux/m68k
+ *
+ * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c
+ * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard
+ * interrupt is shared with the MIDI ACIA so MIDI data also get handled there).
+ * This driver only deals with handing key events off to the input layer.
+ */
+
+/*
+ * 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 <vojtech@ucw.cz>, or by paper mail:
+ * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+
+#include <asm/atariints.h>
+#include <asm/atarihw.h>
+#include <asm/atarikb.h>
+#include <asm/irq.h>
+
+MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
+MODULE_DESCRIPTION("Atari keyboard driver");
+MODULE_LICENSE("GPL");
+
+static unsigned char atakbd_keycode[0x72];
+
+static struct input_dev *atakbd_dev;
+
+static void atakbd_interrupt(unsigned char scancode, char down)
+{
+
+        if (scancode < 0x72) {          /* scancodes < 0xf2 are keys */
+
+                // report raw events here?
+
+                scancode = atakbd_keycode[scancode];
+
+                if (scancode == KEY_CAPSLOCK) { /* CapsLock is a toggle switch key on Amiga */
+                        input_report_key(atakbd_dev, scancode, 1);
+                        input_report_key(atakbd_dev, scancode, 0);
+                        input_sync(atakbd_dev);
+                } else {
+                        input_report_key(atakbd_dev, scancode, down);
+                        input_sync(atakbd_dev);
+                }
+        } else                          /* scancodes >= 0xf2 are mouse data, most likely */
+                printk(KERN_INFO "atakbd: unhandled scancode %x\n", scancode);
+
+        return;
+}
+
+static int __init atakbd_init(void)
+{
+        int i;
+
+        if (!ATARIHW_PRESENT(ST_MFP))
+                return -EIO;
+
+        // TODO: request_mem_region if not done in arch code
+
+        if (!(atakbd_dev = input_allocate_device()))
+                return -ENOMEM;
+
+        // need to init core driver if not already done so
+        if (atari_keyb_init())
+                return -ENODEV;
+
+        atakbd_dev->name = "Atari Keyboard";
+        atakbd_dev->phys = "atakbd/input0";
+        atakbd_dev->id.bustype = BUS_ATARI;
+        atakbd_dev->id.vendor = 0x0001;
+        atakbd_dev->id.product = 0x0001;
+        atakbd_dev->id.version = 0x0100;
+
+        atakbd_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
+        atakbd_dev->keycode = atakbd_keycode;
+        atakbd_dev->keycodesize = sizeof(unsigned char);
+        atakbd_dev->keycodemax = ARRAY_SIZE(atakbd_keycode);
+
+        for (i = 1; i < 0x72; i++) {
+                atakbd_keycode[i] = i;
+                set_bit(atakbd_keycode[i], atakbd_dev->keybit);
+        }
+
+        input_register_device(atakbd_dev);
+
+        atari_input_keyboard_interrupt_hook = atakbd_interrupt;
+
+        printk(KERN_INFO "input: %s at IKBD ACIA\n", atakbd_dev->name);
+
+        return 0;
+}
+
+static void __exit atakbd_exit(void)
+{
+        atari_input_keyboard_interrupt_hook = NULL;
+        input_unregister_device(atakbd_dev);
+}
+
+module_init(atakbd_init);
+module_exit(atakbd_exit);