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, 172 insertions, 0 deletions

diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index 35d998c3e57..b40784a60aa 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -96,6 +96,17 @@ config MOUSE_AMIGA
           To compile this driver as a module, choose M here: the
           module will be called amimouse.
 
+config MOUSE_ATARI
+        tristate "Atari mouse"
+        depends on ATARI
+        select ATARI_KBD_CORE
+        help
+          Say Y here if you have an Atari and want its native mouse
+          supported by the kernel.
+
+          To compile this driver as a module, choose M here: the
+          module will be called atarimouse.
+
 config MOUSE_RISCPC
         tristate "Acorn RiscPC mouse"
         depends on ARCH_ACORN
diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile
index 21a1de61a79..700f61200df 100644
--- a/drivers/input/mouse/Makefile
+++ b/drivers/input/mouse/Makefile
@@ -5,6 +5,7 @@
 # Each configuration option enables a list of files.
 
 obj-$(CONFIG_MOUSE_AMIGA)       += amimouse.o
+obj-$(CONFIG_MOUSE_ATARI)       += atarimouse.o
 obj-$(CONFIG_MOUSE_RISCPC)      += rpcmouse.o
 obj-$(CONFIG_MOUSE_INPORT)      += inport.o
 obj-$(CONFIG_MOUSE_LOGIBM)      += logibm.o
diff --git a/drivers/input/mouse/atarimouse.c b/drivers/input/mouse/atarimouse.c
new file mode 100644
index 00000000000..43ab6566fb6
--- /dev/null
+++ b/drivers/input/mouse/atarimouse.c
@@ -0,0 +1,160 @@
+/*
+ *  Atari mouse driver for Linux/m68k
+ *
+ *  Copyright (c) 2005 Michael Schmitz
+ *
+ *  Based on:
+ *  Amiga mouse driver for Linux/m68k
+ *
+ *  Copyright (c) 2000-2002 Vojtech Pavlik
+ *
+ */
+/*
+ * 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.
+ *
+ * Largely based on the old:
+ *
+ * Atari Mouse Driver for Linux
+ * by Robert de Vries (robert@and.nl) 19Jul93
+ *
+ * 16 Nov 1994 Andreas Schwab
+ * Compatibility with busmouse
+ * Support for three button mouse (shamelessly stolen from MiNT)
+ * third button wired to one of the joystick directions on joystick 1
+ *
+ * 1996/02/11 Andreas Schwab
+ * Module support
+ * Allow multiple open's
+ *
+ * Converted to use new generic busmouse code.  5 Apr 1998
+ *   Russell King <rmk@arm.uk.linux.org>
+ */
+
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+
+#include <asm/irq.h>
+#include <asm/setup.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/atarihw.h>
+#include <asm/atarikb.h>
+#include <asm/atariints.h>
+
+MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
+MODULE_DESCRIPTION("Atari mouse driver");
+MODULE_LICENSE("GPL");
+
+static int mouse_threshold[2] = {2,2};
+
+#ifdef __MODULE__
+MODULE_PARM(mouse_threshold, "2i");
+#endif
+#ifdef FIXED_ATARI_JOYSTICK
+extern int atari_mouse_buttons;
+#endif
+static int atamouse_used = 0;
+
+static struct input_dev *atamouse_dev;
+
+static void atamouse_interrupt(char *buf)
+{
+        int buttons, dx, dy;
+
+/*      ikbd_mouse_disable(); */
+
+        buttons = (buf[0] & 1) | ((buf[0] & 2) << 1);
+#ifdef FIXED_ATARI_JOYSTICK
+        buttons |= atari_mouse_buttons & 2;
+        atari_mouse_buttons = buttons;
+#endif
+/*      ikbd_mouse_rel_pos(); */
+
+        /* only relative events get here */
+        dx =  buf[1];
+        dy = -buf[2];
+
+        input_report_rel(atamouse_dev, REL_X, dx);
+        input_report_rel(atamouse_dev, REL_Y, dy);
+
+        input_report_key(atamouse_dev, BTN_LEFT,   buttons & 0x1);
+        input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2);
+        input_report_key(atamouse_dev, BTN_RIGHT,  buttons & 0x4);
+
+        input_sync(atamouse_dev);
+
+        return;
+}
+
+static int atamouse_open(struct input_dev *dev)
+{
+        if (atamouse_used++)
+                return 0;
+
+#ifdef FIXED_ATARI_JOYSTICK
+        atari_mouse_buttons = 0;
+#endif
+        ikbd_mouse_y0_top();
+        ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]);
+        ikbd_mouse_rel_pos();
+        atari_input_mouse_interrupt_hook = atamouse_interrupt;
+        return 0;
+}
+
+static void atamouse_close(struct input_dev *dev)
+{
+        if (!--atamouse_used) {
+                ikbd_mouse_disable();
+                atari_mouse_interrupt_hook = NULL;
+        }
+}
+
+static int __init atamouse_init(void)
+{
+        if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
+                return -ENODEV;
+
+        if (!(atamouse_dev = input_allocate_device()))
+                return -ENOMEM;
+
+        if (!(atari_keyb_init()))
+                return -ENODEV;
+
+        atamouse_dev->name = "Atari mouse";
+        atamouse_dev->phys = "atamouse/input0";
+        atamouse_dev->id.bustype = BUS_ATARI;
+        atamouse_dev->id.vendor = 0x0001;
+        atamouse_dev->id.product = 0x0002;
+        atamouse_dev->id.version = 0x0100;
+
+        atamouse_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
+        atamouse_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
+        atamouse_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
+        atamouse_dev->open = atamouse_open;
+        atamouse_dev->close = atamouse_close;
+
+        input_register_device(atamouse_dev);
+
+        printk(KERN_INFO "input: %s at keyboard ACIA\n", atamouse_dev->name);
+        return 0;
+}
+
+static void __exit atamouse_exit(void)
+{
+        input_unregister_device(atamouse_dev);
+}
+
+module_init(atamouse_init);
+module_exit(atamouse_exit);