Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Copyright (c) 2000-2001 Vojtech Pavlik |
| 3 | * Copyright (c) 2000 Mark Fletcher |
| 4 | */ |
| 5 | |
| 6 | /* |
| 7 | * Gravis Stinger gamepad driver for Linux |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * This program is free warftware; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 24 | * |
| 25 | * Should you need to contact me, the author, you can do so either by |
| 26 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: |
| 27 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic |
| 28 | */ |
| 29 | |
| 30 | #include <linux/kernel.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/slab.h> |
| 33 | #include <linux/input.h> |
| 34 | #include <linux/serio.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
| 36 | #define DRIVER_DESC "Gravis Stinger gamepad driver" |
| 37 | |
| 38 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
| 39 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 40 | MODULE_LICENSE("GPL"); |
| 41 | |
| 42 | /* |
| 43 | * Constants. |
| 44 | */ |
| 45 | |
| 46 | #define STINGER_MAX_LENGTH 8 |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | /* |
| 49 | * Per-Stinger data. |
| 50 | */ |
| 51 | |
| 52 | struct stinger { |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 53 | struct input_dev *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | int idx; |
| 55 | unsigned char data[STINGER_MAX_LENGTH]; |
| 56 | char phys[32]; |
| 57 | }; |
| 58 | |
| 59 | /* |
| 60 | * stinger_process_packet() decodes packets the driver receives from the |
| 61 | * Stinger. It updates the data accordingly. |
| 62 | */ |
| 63 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 64 | static void stinger_process_packet(struct stinger *stinger) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | { |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 66 | struct input_dev *dev = stinger->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | unsigned char *data = stinger->data; |
| 68 | |
| 69 | if (!stinger->idx) return; |
| 70 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | input_report_key(dev, BTN_A, ((data[0] & 0x20) >> 5)); |
| 72 | input_report_key(dev, BTN_B, ((data[0] & 0x10) >> 4)); |
| 73 | input_report_key(dev, BTN_C, ((data[0] & 0x08) >> 3)); |
| 74 | input_report_key(dev, BTN_X, ((data[0] & 0x04) >> 2)); |
| 75 | input_report_key(dev, BTN_Y, ((data[3] & 0x20) >> 5)); |
| 76 | input_report_key(dev, BTN_Z, ((data[3] & 0x10) >> 4)); |
| 77 | input_report_key(dev, BTN_TL, ((data[3] & 0x08) >> 3)); |
| 78 | input_report_key(dev, BTN_TR, ((data[3] & 0x04) >> 2)); |
| 79 | input_report_key(dev, BTN_SELECT, ((data[3] & 0x02) >> 1)); |
| 80 | input_report_key(dev, BTN_START, (data[3] & 0x01)); |
| 81 | |
| 82 | input_report_abs(dev, ABS_X, (data[1] & 0x3F) - ((data[0] & 0x01) << 6)); |
| 83 | input_report_abs(dev, ABS_Y, ((data[0] & 0x02) << 5) - (data[2] & 0x3F)); |
| 84 | |
| 85 | input_sync(dev); |
| 86 | |
| 87 | return; |
| 88 | } |
| 89 | |
| 90 | /* |
| 91 | * stinger_interrupt() is called by the low level driver when characters |
| 92 | * are ready for us. We then buffer them for further processing, or call the |
| 93 | * packet processing routine. |
| 94 | */ |
| 95 | |
| 96 | static irqreturn_t stinger_interrupt(struct serio *serio, |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 97 | unsigned char data, unsigned int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | { |
| 99 | struct stinger *stinger = serio_get_drvdata(serio); |
| 100 | |
| 101 | /* All Stinger packets are 4 bytes */ |
| 102 | |
| 103 | if (stinger->idx < STINGER_MAX_LENGTH) |
| 104 | stinger->data[stinger->idx++] = data; |
| 105 | |
| 106 | if (stinger->idx == 4) { |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 107 | stinger_process_packet(stinger); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | stinger->idx = 0; |
| 109 | } |
| 110 | |
| 111 | return IRQ_HANDLED; |
| 112 | } |
| 113 | |
| 114 | /* |
| 115 | * stinger_disconnect() is the opposite of stinger_connect() |
| 116 | */ |
| 117 | |
| 118 | static void stinger_disconnect(struct serio *serio) |
| 119 | { |
| 120 | struct stinger *stinger = serio_get_drvdata(serio); |
| 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | serio_close(serio); |
| 123 | serio_set_drvdata(serio, NULL); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 124 | input_unregister_device(stinger->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | kfree(stinger); |
| 126 | } |
| 127 | |
| 128 | /* |
| 129 | * stinger_connect() is the routine that is called when someone adds a |
| 130 | * new serio device that supports Stinger protocol and registers it as |
| 131 | * an input device. |
| 132 | */ |
| 133 | |
| 134 | static int stinger_connect(struct serio *serio, struct serio_driver *drv) |
| 135 | { |
| 136 | struct stinger *stinger; |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 137 | struct input_dev *input_dev; |
| 138 | int err = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 140 | stinger = kmalloc(sizeof(struct stinger), GFP_KERNEL); |
| 141 | input_dev = input_allocate_device(); |
| 142 | if (!stinger || !input_dev) |
Dmitry Torokhov | 127278c | 2006-11-05 22:40:09 -0500 | [diff] [blame] | 143 | goto fail1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 145 | stinger->dev = input_dev; |
Dmitry Torokhov | 10ca4c0 | 2006-06-26 01:45:48 -0400 | [diff] [blame] | 146 | snprintf(stinger->phys, sizeof(stinger->phys), "%s/serio0", serio->phys); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 148 | input_dev->name = "Gravis Stinger"; |
| 149 | input_dev->phys = stinger->phys; |
| 150 | input_dev->id.bustype = BUS_RS232; |
| 151 | input_dev->id.vendor = SERIO_STINGER; |
| 152 | input_dev->id.product = 0x0001; |
| 153 | input_dev->id.version = 0x0100; |
Dmitry Torokhov | 935e658 | 2007-04-12 01:35:26 -0400 | [diff] [blame] | 154 | input_dev->dev.parent = &serio->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 156 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
| 157 | input_dev->keybit[BIT_WORD(BTN_A)] = BIT_MASK(BTN_A) | BIT_MASK(BTN_B) | |
| 158 | BIT_MASK(BTN_C) | BIT_MASK(BTN_X) | BIT_MASK(BTN_Y) | |
| 159 | BIT_MASK(BTN_Z) | BIT_MASK(BTN_TL) | BIT_MASK(BTN_TR) | |
| 160 | BIT_MASK(BTN_START) | BIT_MASK(BTN_SELECT); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 161 | input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 4); |
| 162 | input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
| 164 | serio_set_drvdata(serio, stinger); |
| 165 | |
| 166 | err = serio_open(serio, drv); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 167 | if (err) |
Dmitry Torokhov | 127278c | 2006-11-05 22:40:09 -0500 | [diff] [blame] | 168 | goto fail2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | |
Dmitry Torokhov | 127278c | 2006-11-05 22:40:09 -0500 | [diff] [blame] | 170 | err = input_register_device(stinger->dev); |
| 171 | if (err) |
| 172 | goto fail3; |
| 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | return 0; |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 175 | |
Dmitry Torokhov | 127278c | 2006-11-05 22:40:09 -0500 | [diff] [blame] | 176 | fail3: serio_close(serio); |
| 177 | fail2: serio_set_drvdata(serio, NULL); |
| 178 | fail1: input_free_device(input_dev); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 179 | kfree(stinger); |
| 180 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | /* |
| 184 | * The serio driver structure. |
| 185 | */ |
| 186 | |
| 187 | static struct serio_device_id stinger_serio_ids[] = { |
| 188 | { |
| 189 | .type = SERIO_RS232, |
| 190 | .proto = SERIO_STINGER, |
| 191 | .id = SERIO_ANY, |
| 192 | .extra = SERIO_ANY, |
| 193 | }, |
| 194 | { 0 } |
| 195 | }; |
| 196 | |
| 197 | MODULE_DEVICE_TABLE(serio, stinger_serio_ids); |
| 198 | |
| 199 | static struct serio_driver stinger_drv = { |
| 200 | .driver = { |
| 201 | .name = "stinger", |
| 202 | }, |
| 203 | .description = DRIVER_DESC, |
| 204 | .id_table = stinger_serio_ids, |
| 205 | .interrupt = stinger_interrupt, |
| 206 | .connect = stinger_connect, |
| 207 | .disconnect = stinger_disconnect, |
| 208 | }; |
| 209 | |
Axel Lin | 65ac9f7 | 2012-04-03 23:50:17 -0700 | [diff] [blame] | 210 | module_serio_driver(stinger_drv); |