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path: root/drivers/input/joystick/db9.c
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Diffstat (limited to 'drivers/input/joystick/db9.c')
-rw-r--r--drivers/input/joystick/db9.c647
1 files changed, 647 insertions, 0 deletions
diff --git a/drivers/input/joystick/db9.c b/drivers/input/joystick/db9.c
new file mode 100644
index 000000000000..cfdd3acf06a1
--- /dev/null
+++ b/drivers/input/joystick/db9.c
@@ -0,0 +1,647 @@
+/*
+ * $Id: db9.c,v 1.13 2002/04/07 20:13:37 vojtech Exp $
+ *
+ * Copyright (c) 1999-2001 Vojtech Pavlik
+ *
+ * Based on the work of:
+ * Andree Borrmann Mats Sjövall
+ */
+
+/*
+ * Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver for Linux
+ */
+
+/*
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/parport.h>
+#include <linux/input.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver");
+MODULE_LICENSE("GPL");
+
+static int db9[] __initdata = { -1, 0 };
+static int db9_nargs __initdata = 0;
+module_param_array_named(dev, db9, int, &db9_nargs, 0);
+MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)");
+
+static int db9_2[] __initdata = { -1, 0 };
+static int db9_nargs_2 __initdata = 0;
+module_param_array_named(dev2, db9_2, int, &db9_nargs_2, 0);
+MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)");
+
+static int db9_3[] __initdata = { -1, 0 };
+static int db9_nargs_3 __initdata = 0;
+module_param_array_named(dev3, db9_3, int, &db9_nargs_3, 0);
+MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)");
+
+__obsolete_setup("db9=");
+__obsolete_setup("db9_2=");
+__obsolete_setup("db9_3=");
+
+#define DB9_MULTI_STICK 0x01
+#define DB9_MULTI2_STICK 0x02
+#define DB9_GENESIS_PAD 0x03
+#define DB9_GENESIS5_PAD 0x05
+#define DB9_GENESIS6_PAD 0x06
+#define DB9_SATURN_PAD 0x07
+#define DB9_MULTI_0802 0x08
+#define DB9_MULTI_0802_2 0x09
+#define DB9_CD32_PAD 0x0A
+#define DB9_SATURN_DPP 0x0B
+#define DB9_SATURN_DPP_2 0x0C
+#define DB9_MAX_PAD 0x0D
+
+#define DB9_UP 0x01
+#define DB9_DOWN 0x02
+#define DB9_LEFT 0x04
+#define DB9_RIGHT 0x08
+#define DB9_FIRE1 0x10
+#define DB9_FIRE2 0x20
+#define DB9_FIRE3 0x40
+#define DB9_FIRE4 0x80
+
+#define DB9_NORMAL 0x0a
+#define DB9_NOSELECT 0x08
+
+#define DB9_MAX_DEVICES 2
+
+#define DB9_GENESIS6_DELAY 14
+#define DB9_REFRESH_TIME HZ/100
+
+struct db9 {
+ struct input_dev dev[DB9_MAX_DEVICES];
+ struct timer_list timer;
+ struct pardevice *pd;
+ int mode;
+ int used;
+ char phys[2][32];
+};
+
+static struct db9 *db9_base[3];
+
+static short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB };
+static short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE };
+static short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START };
+
+static char db9_buttons[DB9_MAX_PAD] = { 0, 1, 2, 4, 0, 6, 8, 9, 1, 1, 7, 9, 9 };
+static short *db9_btn[DB9_MAX_PAD] = { NULL, db9_multi_btn, db9_multi_btn, db9_genesis_btn, NULL, db9_genesis_btn,
+ db9_genesis_btn, db9_cd32_btn, db9_multi_btn, db9_multi_btn, db9_cd32_btn,
+ db9_cd32_btn, db9_cd32_btn };
+static char *db9_name[DB9_MAX_PAD] = { NULL, "Multisystem joystick", "Multisystem joystick (2 fire)", "Genesis pad",
+ NULL, "Genesis 5 pad", "Genesis 6 pad", "Saturn pad", "Multisystem (0.8.0.2) joystick",
+ "Multisystem (0.8.0.2-dual) joystick", "Amiga CD-32 pad", "Saturn dpp", "Saturn dpp dual" };
+
+static const int db9_max_pads[DB9_MAX_PAD] = { 0, 1, 1, 1, 0, 1, 1, 6, 1, 2, 1, 6, 12 };
+static const int db9_num_axis[DB9_MAX_PAD] = { 0, 2, 2, 2, 0, 2, 2, 7, 2, 2, 2 ,7, 7 };
+static const short db9_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_RZ, ABS_Z, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
+static const int db9_bidirectional[DB9_MAX_PAD] = { 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0 };
+static const int db9_reverse[DB9_MAX_PAD] = { 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0 };
+
+/*
+ * Saturn controllers
+ */
+#define DB9_SATURN_DELAY 300
+static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 };
+static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 };
+
+/*
+ * db9_saturn_write_sub() writes 2 bit data.
+ */
+static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub)
+{
+ unsigned char c;
+
+ switch (type) {
+ case 1: /* DPP1 */
+ c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data;
+ parport_write_data(port, c);
+ break;
+ case 2: /* DPP2 */
+ c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03;
+ parport_write_data(port, c);
+ break;
+ case 0: /* DB9 */
+ c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered;
+ parport_write_control(port, c);
+ break;
+ }
+}
+
+/*
+ * gc_saturn_read_sub() reads 4 bit data.
+ */
+static unsigned char db9_saturn_read_sub(struct parport *port, int type)
+{
+ unsigned char data;
+
+ if (type) {
+ /* DPP */
+ data = parport_read_status(port) ^ 0x80;
+ return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0)
+ | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0);
+ } else {
+ /* DB9 */
+ data = parport_read_data(port) & 0x0f;
+ return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0)
+ | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0);
+ }
+}
+
+/*
+ * db9_saturn_read_analog() sends clock and reads 8 bit data.
+ */
+static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered)
+{
+ unsigned char data;
+
+ db9_saturn_write_sub(port, type, 0, powered, 0);
+ udelay(DB9_SATURN_DELAY);
+ data = db9_saturn_read_sub(port, type) << 4;
+ db9_saturn_write_sub(port, type, 2, powered, 0);
+ udelay(DB9_SATURN_DELAY);
+ data |= db9_saturn_read_sub(port, type);
+ return data;
+}
+
+/*
+ * db9_saturn_read_packet() reads whole saturn packet at connector
+ * and returns device identifier code.
+ */
+static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered)
+{
+ int i, j;
+ unsigned char tmp;
+
+ db9_saturn_write_sub(port, type, 3, powered, 0);
+ data[0] = db9_saturn_read_sub(port, type);
+ switch (data[0] & 0x0f) {
+ case 0xf:
+ /* 1111 no pad */
+ return data[0] = 0xff;
+ case 0x4: case 0x4 | 0x8:
+ /* ?100 : digital controller */
+ db9_saturn_write_sub(port, type, 0, powered, 1);
+ data[2] = db9_saturn_read_sub(port, type) << 4;
+ db9_saturn_write_sub(port, type, 2, powered, 1);
+ data[1] = db9_saturn_read_sub(port, type) << 4;
+ db9_saturn_write_sub(port, type, 1, powered, 1);
+ data[1] |= db9_saturn_read_sub(port, type);
+ db9_saturn_write_sub(port, type, 3, powered, 1);
+ /* data[2] |= db9_saturn_read_sub(port, type); */
+ data[2] |= data[0];
+ return data[0] = 0x02;
+ case 0x1:
+ /* 0001 : analog controller or multitap */
+ db9_saturn_write_sub(port, type, 2, powered, 0);
+ udelay(DB9_SATURN_DELAY);
+ data[0] = db9_saturn_read_analog(port, type, powered);
+ if (data[0] != 0x41) {
+ /* read analog controller */
+ for (i = 0; i < (data[0] & 0x0f); i++)
+ data[i + 1] = db9_saturn_read_analog(port, type, powered);
+ db9_saturn_write_sub(port, type, 3, powered, 0);
+ return data[0];
+ } else {
+ /* read multitap */
+ if (db9_saturn_read_analog(port, type, powered) != 0x60)
+ return data[0] = 0xff;
+ for (i = 0; i < 60; i += 10) {
+ data[i] = db9_saturn_read_analog(port, type, powered);
+ if (data[i] != 0xff)
+ /* read each pad */
+ for (j = 0; j < (data[i] & 0x0f); j++)
+ data[i + j + 1] = db9_saturn_read_analog(port, type, powered);
+ }
+ db9_saturn_write_sub(port, type, 3, powered, 0);
+ return 0x41;
+ }
+ case 0x0:
+ /* 0000 : mouse */
+ db9_saturn_write_sub(port, type, 2, powered, 0);
+ udelay(DB9_SATURN_DELAY);
+ tmp = db9_saturn_read_analog(port, type, powered);
+ if (tmp == 0xff) {
+ for (i = 0; i < 3; i++)
+ data[i + 1] = db9_saturn_read_analog(port, type, powered);
+ db9_saturn_write_sub(port, type, 3, powered, 0);
+ return data[0] = 0xe3;
+ }
+ default:
+ return data[0];
+ }
+}
+
+/*
+ * db9_saturn_report() analyzes packet and reports.
+ */
+static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *dev, int n, int max_pads)
+{
+ int tmp, i, j;
+
+ tmp = (id == 0x41) ? 60 : 10;
+ for (j = 0; (j < tmp) && (n < max_pads); j += 10, n++) {
+ switch (data[j]) {
+ case 0x16: /* multi controller (analog 4 axis) */
+ input_report_abs(dev + n, db9_abs[5], data[j + 6]);
+ case 0x15: /* mission stick (analog 3 axis) */
+ input_report_abs(dev + n, db9_abs[3], data[j + 4]);
+ input_report_abs(dev + n, db9_abs[4], data[j + 5]);
+ case 0x13: /* racing controller (analog 1 axis) */
+ input_report_abs(dev + n, db9_abs[2], data[j + 3]);
+ case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */
+ case 0x02: /* digital pad (digital 2 axis + buttons) */
+ input_report_abs(dev + n, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
+ input_report_abs(dev + n, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
+ for (i = 0; i < 9; i++)
+ input_report_key(dev + n, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
+ break;
+ case 0x19: /* mission stick x2 (analog 6 axis + buttons) */
+ input_report_abs(dev + n, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
+ input_report_abs(dev + n, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
+ for (i = 0; i < 9; i++)
+ input_report_key(dev + n, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
+ input_report_abs(dev + n, db9_abs[2], data[j + 3]);
+ input_report_abs(dev + n, db9_abs[3], data[j + 4]);
+ input_report_abs(dev + n, db9_abs[4], data[j + 5]);
+ /*
+ input_report_abs(dev + n, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1));
+ input_report_abs(dev + n, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1));
+ */
+ input_report_abs(dev + n, db9_abs[6], data[j + 7]);
+ input_report_abs(dev + n, db9_abs[7], data[j + 8]);
+ input_report_abs(dev + n, db9_abs[5], data[j + 9]);
+ break;
+ case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */
+ input_report_key(dev + n, BTN_A, data[j + 3] & 0x80);
+ input_report_abs(dev + n, db9_abs[2], data[j + 3] & 0x7f);
+ break;
+ case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */
+ input_report_key(dev + n, BTN_START, data[j + 1] & 0x08);
+ input_report_key(dev + n, BTN_A, data[j + 1] & 0x04);
+ input_report_key(dev + n, BTN_C, data[j + 1] & 0x02);
+ input_report_key(dev + n, BTN_B, data[j + 1] & 0x01);
+ input_report_abs(dev + n, db9_abs[2], data[j + 2] ^ 0x80);
+ input_report_abs(dev + n, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */
+ break;
+ case 0xff:
+ default: /* no pad */
+ input_report_abs(dev + n, db9_abs[0], 0);
+ input_report_abs(dev + n, db9_abs[1], 0);
+ for (i = 0; i < 9; i++)
+ input_report_key(dev + n, db9_cd32_btn[i], 0);
+ break;
+ }
+ }
+ return n;
+}
+
+static int db9_saturn(int mode, struct parport *port, struct input_dev *dev)
+{
+ unsigned char id, data[60];
+ int type, n, max_pads;
+ int tmp, i;
+
+ switch (mode) {
+ case DB9_SATURN_PAD:
+ type = 0;
+ n = 1;
+ break;
+ case DB9_SATURN_DPP:
+ type = 1;
+ n = 1;
+ break;
+ case DB9_SATURN_DPP_2:
+ type = 1;
+ n = 2;
+ break;
+ default:
+ return -1;
+ }
+ max_pads = min(db9_max_pads[mode], DB9_MAX_DEVICES);
+ for (tmp = 0, i = 0; i < n; i++) {
+ id = db9_saturn_read_packet(port, data, type + i, 1);
+ tmp = db9_saturn_report(id, data, dev, tmp, max_pads);
+ }
+ return 0;
+}
+
+static void db9_timer(unsigned long private)
+{
+ struct db9 *db9 = (void *) private;
+ struct parport *port = db9->pd->port;
+ struct input_dev *dev = db9->dev;
+ int data, i;
+
+ switch(db9->mode) {
+ case DB9_MULTI_0802_2:
+
+ data = parport_read_data(port) >> 3;
+
+ input_report_abs(dev + 1, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
+ input_report_abs(dev + 1, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
+ input_report_key(dev + 1, BTN_TRIGGER, ~data & DB9_FIRE1);
+
+ case DB9_MULTI_0802:
+
+ data = parport_read_status(port) >> 3;
+
+ input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
+ input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
+ input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1);
+ break;
+
+ case DB9_MULTI_STICK:
+
+ data = parport_read_data(port);
+
+ input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
+ input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
+ input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
+ break;
+
+ case DB9_MULTI2_STICK:
+
+ data = parport_read_data(port);
+
+ input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
+ input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
+ input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
+ input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2);
+ break;
+
+ case DB9_GENESIS_PAD:
+
+ parport_write_control(port, DB9_NOSELECT);
+ data = parport_read_data(port);
+
+ input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
+ input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
+ input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
+ input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
+
+ parport_write_control(port, DB9_NORMAL);
+ data=parport_read_data(port);
+
+ input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
+ input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
+ break;
+
+ case DB9_GENESIS5_PAD:
+
+ parport_write_control(port, DB9_NOSELECT);
+ data=parport_read_data(port);
+
+ input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
+ input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
+ input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
+ input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
+
+ parport_write_control(port, DB9_NORMAL);
+ data=parport_read_data(port);
+
+ input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
+ input_report_key(dev, BTN_X, ~data & DB9_FIRE2);
+ input_report_key(dev, BTN_Y, ~data & DB9_LEFT);
+ input_report_key(dev, BTN_START, ~data & DB9_RIGHT);
+ break;
+
+ case DB9_GENESIS6_PAD:
+
+ parport_write_control(port, DB9_NOSELECT); /* 1 */
+ udelay(DB9_GENESIS6_DELAY);
+ data=parport_read_data(port);
+
+ input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
+ input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
+ input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
+ input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
+
+ parport_write_control(port, DB9_NORMAL);
+ udelay(DB9_GENESIS6_DELAY);
+ data=parport_read_data(port);
+
+ input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
+ input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
+
+ parport_write_control(port, DB9_NOSELECT); /* 2 */
+ udelay(DB9_GENESIS6_DELAY);
+ parport_write_control(port, DB9_NORMAL);
+ udelay(DB9_GENESIS6_DELAY);
+ parport_write_control(port, DB9_NOSELECT); /* 3 */
+ udelay(DB9_GENESIS6_DELAY);
+ data=parport_read_data(port);
+
+ input_report_key(dev, BTN_X, ~data & DB9_LEFT);
+ input_report_key(dev, BTN_Y, ~data & DB9_DOWN);
+ input_report_key(dev, BTN_Z, ~data & DB9_UP);
+ input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT);
+
+ parport_write_control(port, DB9_NORMAL);
+ udelay(DB9_GENESIS6_DELAY);
+ parport_write_control(port, DB9_NOSELECT); /* 4 */
+ udelay(DB9_GENESIS6_DELAY);
+ parport_write_control(port, DB9_NORMAL);
+ break;
+
+ case DB9_SATURN_PAD:
+ case DB9_SATURN_DPP:
+ case DB9_SATURN_DPP_2:
+
+ db9_saturn(db9->mode, port, dev);
+ break;
+
+ case DB9_CD32_PAD:
+
+ data=parport_read_data(port);
+
+ input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
+ input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1));
+
+ parport_write_control(port, 0x0a);
+
+ for (i = 0; i < 7; i++) {
+ data = parport_read_data(port);
+ parport_write_control(port, 0x02);
+ parport_write_control(port, 0x0a);
+ input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2);
+ }
+
+ parport_write_control(port, 0x00);
+ break;
+ }
+
+ input_sync(dev);
+
+ mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
+}
+
+static int db9_open(struct input_dev *dev)
+{
+ struct db9 *db9 = dev->private;
+ struct parport *port = db9->pd->port;
+
+ if (!db9->used++) {
+ parport_claim(db9->pd);
+ parport_write_data(port, 0xff);
+ if (db9_reverse[db9->mode]) {
+ parport_data_reverse(port);
+ parport_write_control(port, DB9_NORMAL);
+ }
+ mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
+ }
+
+ return 0;
+}
+
+static void db9_close(struct input_dev *dev)
+{
+ struct db9 *db9 = dev->private;
+ struct parport *port = db9->pd->port;
+
+ if (!--db9->used) {
+ del_timer(&db9->timer);
+ parport_write_control(port, 0x00);
+ parport_data_forward(port);
+ parport_release(db9->pd);
+ }
+}
+
+static struct db9 __init *db9_probe(int *config, int nargs)
+{
+ struct db9 *db9;
+ struct parport *pp;
+ int i, j;
+
+ if (config[0] < 0)
+ return NULL;
+
+ if (nargs < 2) {
+ printk(KERN_ERR "db9.c: Device type must be specified.\n");
+ return NULL;
+ }
+
+ if (config[1] < 1 || config[1] >= DB9_MAX_PAD || !db9_buttons[config[1]]) {
+ printk(KERN_ERR "db9.c: bad config\n");
+ return NULL;
+ }
+
+ pp = parport_find_number(config[0]);
+ if (!pp) {
+ printk(KERN_ERR "db9.c: no such parport\n");
+ return NULL;
+ }
+
+ if (db9_bidirectional[config[1]]) {
+ if (!(pp->modes & PARPORT_MODE_TRISTATE)) {
+ printk(KERN_ERR "db9.c: specified parport is not bidirectional\n");
+ parport_put_port(pp);
+ return NULL;
+ }
+ }
+
+ if (!(db9 = kmalloc(sizeof(struct db9), GFP_KERNEL))) {
+ parport_put_port(pp);
+ return NULL;
+ }
+ memset(db9, 0, sizeof(struct db9));
+
+ db9->mode = config[1];
+ init_timer(&db9->timer);
+ db9->timer.data = (long) db9;
+ db9->timer.function = db9_timer;
+
+ db9->pd = parport_register_device(pp, "db9", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
+ parport_put_port(pp);
+
+ if (!db9->pd) {
+ printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n");
+ kfree(db9);
+ return NULL;
+ }
+
+ for (i = 0; i < (min(db9_max_pads[db9->mode], DB9_MAX_DEVICES)); i++) {
+
+ sprintf(db9->phys[i], "%s/input%d", db9->pd->port->name, i);
+
+ db9->dev[i].private = db9;
+ db9->dev[i].open = db9_open;
+ db9->dev[i].close = db9_close;
+
+ db9->dev[i].name = db9_name[db9->mode];
+ db9->dev[i].phys = db9->phys[i];
+ db9->dev[i].id.bustype = BUS_PARPORT;
+ db9->dev[i].id.vendor = 0x0002;
+ db9->dev[i].id.product = config[1];
+ db9->dev[i].id.version = 0x0100;
+
+ db9->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ for (j = 0; j < db9_buttons[db9->mode]; j++)
+ set_bit(db9_btn[db9->mode][j], db9->dev[i].keybit);
+ for (j = 0; j < db9_num_axis[db9->mode]; j++) {
+ set_bit(db9_abs[j], db9->dev[i].absbit);
+ if (j < 2) {
+ db9->dev[i].absmin[db9_abs[j]] = -1;
+ db9->dev[i].absmax[db9_abs[j]] = 1;
+ } else {
+ db9->dev[i].absmin[db9_abs[j]] = 1;
+ db9->dev[i].absmax[db9_abs[j]] = 255;
+ db9->dev[i].absflat[db9_abs[j]] = 0;
+ }
+ }
+ input_register_device(db9->dev + i);
+ printk(KERN_INFO "input: %s on %s\n", db9->dev[i].name, db9->pd->port->name);
+ }
+
+ return db9;
+}
+
+static int __init db9_init(void)
+{
+ db9_base[0] = db9_probe(db9, db9_nargs);
+ db9_base[1] = db9_probe(db9_2, db9_nargs_2);
+ db9_base[2] = db9_probe(db9_3, db9_nargs_3);
+
+ if (db9_base[0] || db9_base[1] || db9_base[2])
+ return 0;
+
+ return -ENODEV;
+}
+
+static void __exit db9_exit(void)
+{
+ int i, j;
+
+ for (i = 0; i < 3; i++)
+ if (db9_base[i]) {
+ for (j = 0; j < min(db9_max_pads[db9_base[i]->mode], DB9_MAX_DEVICES); j++)
+ input_unregister_device(db9_base[i]->dev + j);
+ parport_unregister_device(db9_base[i]->pd);
+ }
+}
+
+module_init(db9_init);
+module_exit(db9_exit);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 10:02:27 +0000