| /* |
| * 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 |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/delay.h> |
| #include <linux/init.h> |
| #include <linux/parport.h> |
| #include <linux/input.h> |
| #include <linux/mutex.h> |
| #include <linux/slab.h> |
| |
| MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
| MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver"); |
| MODULE_LICENSE("GPL"); |
| |
| struct db9_config { |
| int args[2]; |
| unsigned int nargs; |
| }; |
| |
| #define DB9_MAX_PORTS 3 |
| static struct db9_config db9_cfg[DB9_MAX_PORTS]; |
| |
| module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0); |
| MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)"); |
| module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0); |
| MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)"); |
| module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0); |
| MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)"); |
| |
| #define DB9_ARG_PARPORT 0 |
| #define DB9_ARG_MODE 1 |
| |
| #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_GENESIS6_DELAY 14 |
| #define DB9_REFRESH_TIME HZ/100 |
| |
| #define DB9_MAX_DEVICES 2 |
| |
| struct db9_mode_data { |
| const char *name; |
| const short *buttons; |
| int n_buttons; |
| int n_pads; |
| int n_axis; |
| int bidirectional; |
| int reverse; |
| }; |
| |
| struct db9 { |
| struct input_dev *dev[DB9_MAX_DEVICES]; |
| struct timer_list timer; |
| struct pardevice *pd; |
| int mode; |
| int used; |
| int parportno; |
| struct mutex mutex; |
| char phys[DB9_MAX_DEVICES][32]; |
| }; |
| |
| static struct db9 *db9_base[3]; |
| |
| static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB }; |
| static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE }; |
| static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START }; |
| 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 struct db9_mode_data db9_modes[] = { |
| { NULL, NULL, 0, 0, 0, 0, 0 }, |
| { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, |
| { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 }, |
| { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 }, |
| { NULL, NULL, 0, 0, 0, 0, 0 }, |
| { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 }, |
| { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 }, |
| { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 }, |
| { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, |
| { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 }, |
| { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 }, |
| { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 }, |
| { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 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; |
| } |
| /* else: fall through */ |
| 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 *devs[], int n, int max_pads) |
| { |
| struct input_dev *dev; |
| int tmp, i, j; |
| |
| tmp = (id == 0x41) ? 60 : 10; |
| for (j = 0; j < tmp && n < max_pads; j += 10, n++) { |
| dev = devs[n]; |
| switch (data[j]) { |
| case 0x16: /* multi controller (analog 4 axis) */ |
| input_report_abs(dev, db9_abs[5], data[j + 6]); |
| /* fall through */ |
| case 0x15: /* mission stick (analog 3 axis) */ |
| input_report_abs(dev, db9_abs[3], data[j + 4]); |
| input_report_abs(dev, db9_abs[4], data[j + 5]); |
| /* fall through */ |
| case 0x13: /* racing controller (analog 1 axis) */ |
| input_report_abs(dev, db9_abs[2], data[j + 3]); |
| /* fall through */ |
| case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ |
| case 0x02: /* digital pad (digital 2 axis + buttons) */ |
| input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); |
| input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); |
| for (i = 0; i < 9; i++) |
| input_report_key(dev, 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, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); |
| input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); |
| for (i = 0; i < 9; i++) |
| input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); |
| input_report_abs(dev, db9_abs[2], data[j + 3]); |
| input_report_abs(dev, db9_abs[3], data[j + 4]); |
| input_report_abs(dev, db9_abs[4], data[j + 5]); |
| /* |
| input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); |
| input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); |
| */ |
| input_report_abs(dev, db9_abs[6], data[j + 7]); |
| input_report_abs(dev, db9_abs[7], data[j + 8]); |
| input_report_abs(dev, db9_abs[5], data[j + 9]); |
| break; |
| case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ |
| input_report_key(dev, BTN_A, data[j + 3] & 0x80); |
| input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f); |
| break; |
| case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ |
| input_report_key(dev, BTN_START, data[j + 1] & 0x08); |
| input_report_key(dev, BTN_A, data[j + 1] & 0x04); |
| input_report_key(dev, BTN_C, data[j + 1] & 0x02); |
| input_report_key(dev, BTN_B, data[j + 1] & 0x01); |
| input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80); |
| input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ |
| break; |
| case 0xff: |
| default: /* no pad */ |
| input_report_abs(dev, db9_abs[0], 0); |
| input_report_abs(dev, db9_abs[1], 0); |
| for (i = 0; i < 9; i++) |
| input_report_key(dev, db9_cd32_btn[i], 0); |
| break; |
| } |
| } |
| return n; |
| } |
| |
| static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[]) |
| { |
| 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_modes[mode].n_pads, 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, devs, tmp, max_pads); |
| } |
| return 0; |
| } |
| |
| static void db9_timer(struct timer_list *t) |
| { |
| struct db9 *db9 = from_timer(db9, t, timer); |
| struct parport *port = db9->pd->port; |
| struct input_dev *dev = db9->dev[0]; |
| struct input_dev *dev2 = db9->dev[1]; |
| int data, i; |
| |
| switch (db9->mode) { |
| case DB9_MULTI_0802_2: |
| |
| data = parport_read_data(port) >> 3; |
| |
| input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); |
| input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); |
| input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1); |
| /* fall through */ |
| |
| 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, db9->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 = input_get_drvdata(dev); |
| struct parport *port = db9->pd->port; |
| int err; |
| |
| err = mutex_lock_interruptible(&db9->mutex); |
| if (err) |
| return err; |
| |
| if (!db9->used++) { |
| parport_claim(db9->pd); |
| parport_write_data(port, 0xff); |
| if (db9_modes[db9->mode].reverse) { |
| parport_data_reverse(port); |
| parport_write_control(port, DB9_NORMAL); |
| } |
| mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); |
| } |
| |
| mutex_unlock(&db9->mutex); |
| return 0; |
| } |
| |
| static void db9_close(struct input_dev *dev) |
| { |
| struct db9 *db9 = input_get_drvdata(dev); |
| struct parport *port = db9->pd->port; |
| |
| mutex_lock(&db9->mutex); |
| if (!--db9->used) { |
| del_timer_sync(&db9->timer); |
| parport_write_control(port, 0x00); |
| parport_data_forward(port); |
| parport_release(db9->pd); |
| } |
| mutex_unlock(&db9->mutex); |
| } |
| |
| static void db9_attach(struct parport *pp) |
| { |
| struct db9 *db9; |
| const struct db9_mode_data *db9_mode; |
| struct pardevice *pd; |
| struct input_dev *input_dev; |
| int i, j, port_idx; |
| int mode; |
| struct pardev_cb db9_parport_cb; |
| |
| for (port_idx = 0; port_idx < DB9_MAX_PORTS; port_idx++) { |
| if (db9_cfg[port_idx].nargs == 0 || |
| db9_cfg[port_idx].args[DB9_ARG_PARPORT] < 0) |
| continue; |
| |
| if (db9_cfg[port_idx].args[DB9_ARG_PARPORT] == pp->number) |
| break; |
| } |
| |
| if (port_idx == DB9_MAX_PORTS) { |
| pr_debug("Not using parport%d.\n", pp->number); |
| return; |
| } |
| |
| mode = db9_cfg[port_idx].args[DB9_ARG_MODE]; |
| |
| if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) { |
| printk(KERN_ERR "db9.c: Bad device type %d\n", mode); |
| return; |
| } |
| |
| db9_mode = &db9_modes[mode]; |
| |
| if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) { |
| printk(KERN_ERR "db9.c: specified parport is not bidirectional\n"); |
| return; |
| } |
| |
| memset(&db9_parport_cb, 0, sizeof(db9_parport_cb)); |
| db9_parport_cb.flags = PARPORT_FLAG_EXCL; |
| |
| pd = parport_register_dev_model(pp, "db9", &db9_parport_cb, port_idx); |
| if (!pd) { |
| printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n"); |
| return; |
| } |
| |
| db9 = kzalloc(sizeof(struct db9), GFP_KERNEL); |
| if (!db9) |
| goto err_unreg_pardev; |
| |
| mutex_init(&db9->mutex); |
| db9->pd = pd; |
| db9->mode = mode; |
| db9->parportno = pp->number; |
| timer_setup(&db9->timer, db9_timer, 0); |
| |
| for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) { |
| |
| db9->dev[i] = input_dev = input_allocate_device(); |
| if (!input_dev) { |
| printk(KERN_ERR "db9.c: Not enough memory for input device\n"); |
| goto err_unreg_devs; |
| } |
| |
| snprintf(db9->phys[i], sizeof(db9->phys[i]), |
| "%s/input%d", db9->pd->port->name, i); |
| |
| input_dev->name = db9_mode->name; |
| input_dev->phys = db9->phys[i]; |
| input_dev->id.bustype = BUS_PARPORT; |
| input_dev->id.vendor = 0x0002; |
| input_dev->id.product = mode; |
| input_dev->id.version = 0x0100; |
| |
| input_set_drvdata(input_dev, db9); |
| |
| input_dev->open = db9_open; |
| input_dev->close = db9_close; |
| |
| input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
| for (j = 0; j < db9_mode->n_buttons; j++) |
| set_bit(db9_mode->buttons[j], input_dev->keybit); |
| for (j = 0; j < db9_mode->n_axis; j++) { |
| if (j < 2) |
| input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0); |
| else |
| input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0); |
| } |
| |
| if (input_register_device(input_dev)) |
| goto err_free_dev; |
| } |
| |
| db9_base[port_idx] = db9; |
| return; |
| |
| err_free_dev: |
| input_free_device(db9->dev[i]); |
| err_unreg_devs: |
| while (--i >= 0) |
| input_unregister_device(db9->dev[i]); |
| kfree(db9); |
| err_unreg_pardev: |
| parport_unregister_device(pd); |
| } |
| |
| static void db9_detach(struct parport *port) |
| { |
| int i; |
| struct db9 *db9; |
| |
| for (i = 0; i < DB9_MAX_PORTS; i++) { |
| if (db9_base[i] && db9_base[i]->parportno == port->number) |
| break; |
| } |
| |
| if (i == DB9_MAX_PORTS) |
| return; |
| |
| db9 = db9_base[i]; |
| db9_base[i] = NULL; |
| |
| for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++) |
| input_unregister_device(db9->dev[i]); |
| parport_unregister_device(db9->pd); |
| kfree(db9); |
| } |
| |
| static struct parport_driver db9_parport_driver = { |
| .name = "db9", |
| .match_port = db9_attach, |
| .detach = db9_detach, |
| .devmodel = true, |
| }; |
| |
| static int __init db9_init(void) |
| { |
| int i; |
| int have_dev = 0; |
| |
| for (i = 0; i < DB9_MAX_PORTS; i++) { |
| if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0) |
| continue; |
| |
| if (db9_cfg[i].nargs < 2) { |
| printk(KERN_ERR "db9.c: Device type must be specified.\n"); |
| return -EINVAL; |
| } |
| |
| have_dev = 1; |
| } |
| |
| if (!have_dev) |
| return -ENODEV; |
| |
| return parport_register_driver(&db9_parport_driver); |
| } |
| |
| static void __exit db9_exit(void) |
| { |
| parport_unregister_driver(&db9_parport_driver); |
| } |
| |
| module_init(db9_init); |
| module_exit(db9_exit); |
