1 /* 2 * Copyright (c) 1999-2001 Vojtech Pavlik 3 */ 4 5 /* 6 * Logitech WingMan Warrior joystick driver for Linux 7 */ 8 9 /* 10 * This program is free warftware; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 * Should you need to contact me, the author, you can do so either by 25 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 26 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 27 */ 28 29 #include <linux/kernel.h> 30 #include <linux/module.h> 31 #include <linux/slab.h> 32 #include <linux/input.h> 33 #include <linux/serio.h> 34 35 #define DRIVER_DESC "Logitech WingMan Warrior joystick driver" 36 37 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 38 MODULE_DESCRIPTION(DRIVER_DESC); 39 MODULE_LICENSE("GPL"); 40 41 /* 42 * Constants. 43 */ 44 45 #define WARRIOR_MAX_LENGTH 16 46 static char warrior_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 }; 47 48 /* 49 * Per-Warrior data. 50 */ 51 52 struct warrior { 53 struct input_dev *dev; 54 int idx, len; 55 unsigned char data[WARRIOR_MAX_LENGTH]; 56 char phys[32]; 57 }; 58 59 /* 60 * warrior_process_packet() decodes packets the driver receives from the 61 * Warrior. It updates the data accordingly. 62 */ 63 64 static void warrior_process_packet(struct warrior *warrior) 65 { 66 struct input_dev *dev = warrior->dev; 67 unsigned char *data = warrior->data; 68 69 if (!warrior->idx) return; 70 71 switch ((data[0] >> 4) & 7) { 72 case 1: /* Button data */ 73 input_report_key(dev, BTN_TRIGGER, data[3] & 1); 74 input_report_key(dev, BTN_THUMB, (data[3] >> 1) & 1); 75 input_report_key(dev, BTN_TOP, (data[3] >> 2) & 1); 76 input_report_key(dev, BTN_TOP2, (data[3] >> 3) & 1); 77 break; 78 case 3: /* XY-axis info->data */ 79 input_report_abs(dev, ABS_X, ((data[0] & 8) << 5) - (data[2] | ((data[0] & 4) << 5))); 80 input_report_abs(dev, ABS_Y, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7)); 81 break; 82 case 5: /* Throttle, spinner, hat info->data */ 83 input_report_abs(dev, ABS_THROTTLE, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7)); 84 input_report_abs(dev, ABS_HAT0X, (data[3] & 2 ? 1 : 0) - (data[3] & 1 ? 1 : 0)); 85 input_report_abs(dev, ABS_HAT0Y, (data[3] & 8 ? 1 : 0) - (data[3] & 4 ? 1 : 0)); 86 input_report_rel(dev, REL_DIAL, (data[2] | ((data[0] & 4) << 5)) - ((data[0] & 8) << 5)); 87 break; 88 } 89 input_sync(dev); 90 } 91 92 /* 93 * warrior_interrupt() is called by the low level driver when characters 94 * are ready for us. We then buffer them for further processing, or call the 95 * packet processing routine. 96 */ 97 98 static irqreturn_t warrior_interrupt(struct serio *serio, 99 unsigned char data, unsigned int flags) 100 { 101 struct warrior *warrior = serio_get_drvdata(serio); 102 103 if (data & 0x80) { 104 if (warrior->idx) warrior_process_packet(warrior); 105 warrior->idx = 0; 106 warrior->len = warrior_lengths[(data >> 4) & 7]; 107 } 108 109 if (warrior->idx < warrior->len) 110 warrior->data[warrior->idx++] = data; 111 112 if (warrior->idx == warrior->len) { 113 if (warrior->idx) warrior_process_packet(warrior); 114 warrior->idx = 0; 115 warrior->len = 0; 116 } 117 return IRQ_HANDLED; 118 } 119 120 /* 121 * warrior_disconnect() is the opposite of warrior_connect() 122 */ 123 124 static void warrior_disconnect(struct serio *serio) 125 { 126 struct warrior *warrior = serio_get_drvdata(serio); 127 128 serio_close(serio); 129 serio_set_drvdata(serio, NULL); 130 input_unregister_device(warrior->dev); 131 kfree(warrior); 132 } 133 134 /* 135 * warrior_connect() is the routine that is called when someone adds a 136 * new serio device. It looks for the Warrior, and if found, registers 137 * it as an input device. 138 */ 139 140 static int warrior_connect(struct serio *serio, struct serio_driver *drv) 141 { 142 struct warrior *warrior; 143 struct input_dev *input_dev; 144 int err = -ENOMEM; 145 146 warrior = kzalloc(sizeof(struct warrior), GFP_KERNEL); 147 input_dev = input_allocate_device(); 148 if (!warrior || !input_dev) 149 goto fail1; 150 151 warrior->dev = input_dev; 152 snprintf(warrior->phys, sizeof(warrior->phys), "%s/input0", serio->phys); 153 154 input_dev->name = "Logitech WingMan Warrior"; 155 input_dev->phys = warrior->phys; 156 input_dev->id.bustype = BUS_RS232; 157 input_dev->id.vendor = SERIO_WARRIOR; 158 input_dev->id.product = 0x0001; 159 input_dev->id.version = 0x0100; 160 input_dev->dev.parent = &serio->dev; 161 162 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) | 163 BIT_MASK(EV_ABS); 164 input_dev->keybit[BIT_WORD(BTN_TRIGGER)] = BIT_MASK(BTN_TRIGGER) | 165 BIT_MASK(BTN_THUMB) | BIT_MASK(BTN_TOP) | BIT_MASK(BTN_TOP2); 166 input_dev->relbit[0] = BIT_MASK(REL_DIAL); 167 input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 8); 168 input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 8); 169 input_set_abs_params(input_dev, ABS_THROTTLE, -112, 112, 0, 0); 170 input_set_abs_params(input_dev, ABS_HAT0X, -1, 1, 0, 0); 171 input_set_abs_params(input_dev, ABS_HAT0Y, -1, 1, 0, 0); 172 173 serio_set_drvdata(serio, warrior); 174 175 err = serio_open(serio, drv); 176 if (err) 177 goto fail2; 178 179 err = input_register_device(warrior->dev); 180 if (err) 181 goto fail3; 182 183 return 0; 184 185 fail3: serio_close(serio); 186 fail2: serio_set_drvdata(serio, NULL); 187 fail1: input_free_device(input_dev); 188 kfree(warrior); 189 return err; 190 } 191 192 /* 193 * The serio driver structure. 194 */ 195 196 static struct serio_device_id warrior_serio_ids[] = { 197 { 198 .type = SERIO_RS232, 199 .proto = SERIO_WARRIOR, 200 .id = SERIO_ANY, 201 .extra = SERIO_ANY, 202 }, 203 { 0 } 204 }; 205 206 MODULE_DEVICE_TABLE(serio, warrior_serio_ids); 207 208 static struct serio_driver warrior_drv = { 209 .driver = { 210 .name = "warrior", 211 }, 212 .description = DRIVER_DESC, 213 .id_table = warrior_serio_ids, 214 .interrupt = warrior_interrupt, 215 .connect = warrior_connect, 216 .disconnect = warrior_disconnect, 217 }; 218 219 module_serio_driver(warrior_drv); 220