Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * NES, SNES, N64, MultiSystem, PSX gamepad driver for Linux |
| 3 | * |
Dmitry Torokhov | ab0c344 | 2005-05-29 02:28:55 -0500 | [diff] [blame] | 4 | * Copyright (c) 1999-2004 Vojtech Pavlik <vojtech@suse.cz> |
| 5 | * Copyright (c) 2004 Peter Nelson <rufus-kernel@hackish.org> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * |
| 7 | * Based on the work of: |
Dmitry Torokhov | ab0c344 | 2005-05-29 02:28:55 -0500 | [diff] [blame] | 8 | * Andree Borrmann John Dahlstrom |
| 9 | * David Kuder Nathan Hand |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 10 | * Raphael Assenat |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | */ |
| 12 | |
| 13 | /* |
| 14 | * This program is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * This program is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with this program; if not, write to the Free Software |
| 26 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 27 | * |
| 28 | * Should you need to contact me, the author, you can do so either by |
| 29 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: |
| 30 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic |
| 31 | */ |
| 32 | |
| 33 | #include <linux/kernel.h> |
| 34 | #include <linux/delay.h> |
| 35 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <linux/init.h> |
| 37 | #include <linux/parport.h> |
| 38 | #include <linux/input.h> |
Ingo Molnar | 72ba9f0 | 2006-02-19 00:22:30 -0500 | [diff] [blame] | 39 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| 41 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
| 42 | MODULE_DESCRIPTION("NES, SNES, N64, MultiSystem, PSX gamepad driver"); |
| 43 | MODULE_LICENSE("GPL"); |
| 44 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 45 | #define GC_MAX_PORTS 3 |
| 46 | #define GC_MAX_DEVICES 5 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 48 | struct gc_config { |
| 49 | int args[GC_MAX_DEVICES + 1]; |
Dmitry Torokhov | 7816723 | 2007-05-03 00:52:51 -0400 | [diff] [blame] | 50 | unsigned int nargs; |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 51 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
Dmitry Torokhov | 7816723 | 2007-05-03 00:52:51 -0400 | [diff] [blame] | 53 | static struct gc_config gc_cfg[GC_MAX_PORTS] __initdata; |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 54 | |
Dmitry Torokhov | 7816723 | 2007-05-03 00:52:51 -0400 | [diff] [blame] | 55 | module_param_array_named(map, gc_cfg[0].args, int, &gc_cfg[0].nargs, 0); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 56 | MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<pad1>,<pad2>,..<pad5>)"); |
Dmitry Torokhov | 7816723 | 2007-05-03 00:52:51 -0400 | [diff] [blame] | 57 | module_param_array_named(map2, gc_cfg[1].args, int, &gc_cfg[1].nargs, 0); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 58 | MODULE_PARM_DESC(map2, "Describes second set of devices"); |
Dmitry Torokhov | 7816723 | 2007-05-03 00:52:51 -0400 | [diff] [blame] | 59 | module_param_array_named(map3, gc_cfg[2].args, int, &gc_cfg[2].nargs, 0); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 60 | MODULE_PARM_DESC(map3, "Describes third set of devices"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | /* see also gs_psx_delay parameter in PSX support section */ |
| 63 | |
| 64 | #define GC_SNES 1 |
| 65 | #define GC_NES 2 |
| 66 | #define GC_NES4 3 |
| 67 | #define GC_MULTI 4 |
| 68 | #define GC_MULTI2 5 |
| 69 | #define GC_N64 6 |
| 70 | #define GC_PSX 7 |
| 71 | #define GC_DDR 8 |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 72 | #define GC_SNESMOUSE 9 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 74 | #define GC_MAX 9 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
| 76 | #define GC_REFRESH_TIME HZ/100 |
| 77 | |
| 78 | struct gc { |
| 79 | struct pardevice *pd; |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 80 | struct input_dev *dev[GC_MAX_DEVICES]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | struct timer_list timer; |
| 82 | unsigned char pads[GC_MAX + 1]; |
| 83 | int used; |
Ingo Molnar | 72ba9f0 | 2006-02-19 00:22:30 -0500 | [diff] [blame] | 84 | struct mutex mutex; |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 85 | char phys[GC_MAX_DEVICES][32]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | }; |
| 87 | |
| 88 | static struct gc *gc_base[3]; |
| 89 | |
| 90 | static int gc_status_bit[] = { 0x40, 0x80, 0x20, 0x10, 0x08 }; |
| 91 | |
| 92 | static char *gc_names[] = { NULL, "SNES pad", "NES pad", "NES FourPort", "Multisystem joystick", |
| 93 | "Multisystem 2-button joystick", "N64 controller", "PSX controller", |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 94 | "PSX DDR controller", "SNES mouse" }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | /* |
| 96 | * N64 support. |
| 97 | */ |
| 98 | |
| 99 | static unsigned char gc_n64_bytes[] = { 0, 1, 13, 15, 14, 12, 10, 11, 2, 3 }; |
| 100 | static short gc_n64_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_TRIGGER, BTN_START }; |
| 101 | |
| 102 | #define GC_N64_LENGTH 32 /* N64 bit length, not including stop bit */ |
| 103 | #define GC_N64_REQUEST_LENGTH 37 /* transmit request sequence is 9 bits long */ |
| 104 | #define GC_N64_DELAY 133 /* delay between transmit request, and response ready (us) */ |
| 105 | #define GC_N64_REQUEST 0x1dd1111111ULL /* the request data command (encoded for 000000011) */ |
| 106 | #define GC_N64_DWS 3 /* delay between write segments (required for sound playback because of ISA DMA) */ |
| 107 | /* GC_N64_DWS > 24 is known to fail */ |
| 108 | #define GC_N64_POWER_W 0xe2 /* power during write (transmit request) */ |
| 109 | #define GC_N64_POWER_R 0xfd /* power during read */ |
| 110 | #define GC_N64_OUT 0x1d /* output bits to the 4 pads */ |
| 111 | /* Reading the main axes of any N64 pad is known to fail if the corresponding bit */ |
| 112 | /* in GC_N64_OUT is pulled low on the output port (by any routine) for more */ |
| 113 | /* than 123 us */ |
| 114 | #define GC_N64_CLOCK 0x02 /* clock bits for read */ |
| 115 | |
| 116 | /* |
| 117 | * gc_n64_read_packet() reads an N64 packet. |
| 118 | * Each pad uses one bit per byte. So all pads connected to this port are read in parallel. |
| 119 | */ |
| 120 | |
| 121 | static void gc_n64_read_packet(struct gc *gc, unsigned char *data) |
| 122 | { |
| 123 | int i; |
| 124 | unsigned long flags; |
| 125 | |
| 126 | /* |
| 127 | * Request the pad to transmit data |
| 128 | */ |
| 129 | |
| 130 | local_irq_save(flags); |
| 131 | for (i = 0; i < GC_N64_REQUEST_LENGTH; i++) { |
| 132 | parport_write_data(gc->pd->port, GC_N64_POWER_W | ((GC_N64_REQUEST >> i) & 1 ? GC_N64_OUT : 0)); |
| 133 | udelay(GC_N64_DWS); |
| 134 | } |
| 135 | local_irq_restore(flags); |
| 136 | |
| 137 | /* |
| 138 | * Wait for the pad response to be loaded into the 33-bit register of the adapter |
| 139 | */ |
| 140 | |
| 141 | udelay(GC_N64_DELAY); |
| 142 | |
| 143 | /* |
| 144 | * Grab data (ignoring the last bit, which is a stop bit) |
| 145 | */ |
| 146 | |
| 147 | for (i = 0; i < GC_N64_LENGTH; i++) { |
| 148 | parport_write_data(gc->pd->port, GC_N64_POWER_R); |
| 149 | data[i] = parport_read_status(gc->pd->port); |
| 150 | parport_write_data(gc->pd->port, GC_N64_POWER_R | GC_N64_CLOCK); |
| 151 | } |
| 152 | |
| 153 | /* |
| 154 | * We must wait 200 ms here for the controller to reinitialize before the next read request. |
| 155 | * No worries as long as gc_read is polled less frequently than this. |
| 156 | */ |
| 157 | |
| 158 | } |
| 159 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 160 | static void gc_n64_process_packet(struct gc *gc) |
| 161 | { |
| 162 | unsigned char data[GC_N64_LENGTH]; |
| 163 | signed char axes[2]; |
| 164 | struct input_dev *dev; |
| 165 | int i, j, s; |
| 166 | |
| 167 | gc_n64_read_packet(gc, data); |
| 168 | |
| 169 | for (i = 0; i < GC_MAX_DEVICES; i++) { |
| 170 | |
| 171 | dev = gc->dev[i]; |
| 172 | if (!dev) |
| 173 | continue; |
| 174 | |
| 175 | s = gc_status_bit[i]; |
| 176 | |
| 177 | if (s & gc->pads[GC_N64] & ~(data[8] | data[9])) { |
| 178 | |
| 179 | axes[0] = axes[1] = 0; |
| 180 | |
| 181 | for (j = 0; j < 8; j++) { |
| 182 | if (data[23 - j] & s) |
| 183 | axes[0] |= 1 << j; |
| 184 | if (data[31 - j] & s) |
| 185 | axes[1] |= 1 << j; |
| 186 | } |
| 187 | |
| 188 | input_report_abs(dev, ABS_X, axes[0]); |
| 189 | input_report_abs(dev, ABS_Y, -axes[1]); |
| 190 | |
| 191 | input_report_abs(dev, ABS_HAT0X, !(s & data[6]) - !(s & data[7])); |
| 192 | input_report_abs(dev, ABS_HAT0Y, !(s & data[4]) - !(s & data[5])); |
| 193 | |
| 194 | for (j = 0; j < 10; j++) |
| 195 | input_report_key(dev, gc_n64_btn[j], s & data[gc_n64_bytes[j]]); |
| 196 | |
| 197 | input_sync(dev); |
| 198 | } |
| 199 | } |
| 200 | } |
| 201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | /* |
| 203 | * NES/SNES support. |
| 204 | */ |
| 205 | |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 206 | #define GC_NES_DELAY 6 /* Delay between bits - 6us */ |
| 207 | #define GC_NES_LENGTH 8 /* The NES pads use 8 bits of data */ |
| 208 | #define GC_SNES_LENGTH 12 /* The SNES true length is 16, but the |
| 209 | last 4 bits are unused */ |
| 210 | #define GC_SNESMOUSE_LENGTH 32 /* The SNES mouse uses 32 bits, the first |
| 211 | 16 bits are equivalent to a gamepad */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
| 213 | #define GC_NES_POWER 0xfc |
| 214 | #define GC_NES_CLOCK 0x01 |
| 215 | #define GC_NES_LATCH 0x02 |
| 216 | |
| 217 | static unsigned char gc_nes_bytes[] = { 0, 1, 2, 3 }; |
| 218 | static unsigned char gc_snes_bytes[] = { 8, 0, 2, 3, 9, 1, 10, 11 }; |
| 219 | static short gc_snes_btn[] = { BTN_A, BTN_B, BTN_SELECT, BTN_START, BTN_X, BTN_Y, BTN_TL, BTN_TR }; |
| 220 | |
| 221 | /* |
| 222 | * gc_nes_read_packet() reads a NES/SNES packet. |
| 223 | * Each pad uses one bit per byte. So all pads connected to |
| 224 | * this port are read in parallel. |
| 225 | */ |
| 226 | |
| 227 | static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data) |
| 228 | { |
| 229 | int i; |
| 230 | |
| 231 | parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH); |
| 232 | udelay(GC_NES_DELAY * 2); |
| 233 | parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK); |
| 234 | |
| 235 | for (i = 0; i < length; i++) { |
| 236 | udelay(GC_NES_DELAY); |
| 237 | parport_write_data(gc->pd->port, GC_NES_POWER); |
| 238 | data[i] = parport_read_status(gc->pd->port) ^ 0x7f; |
| 239 | udelay(GC_NES_DELAY); |
| 240 | parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK); |
| 241 | } |
| 242 | } |
| 243 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 244 | static void gc_nes_process_packet(struct gc *gc) |
| 245 | { |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 246 | unsigned char data[GC_SNESMOUSE_LENGTH]; |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 247 | struct input_dev *dev; |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 248 | int i, j, s, len; |
| 249 | char x_rel, y_rel; |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 250 | |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 251 | len = gc->pads[GC_SNESMOUSE] ? GC_SNESMOUSE_LENGTH : |
| 252 | (gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH); |
| 253 | |
| 254 | gc_nes_read_packet(gc, len, data); |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 255 | |
| 256 | for (i = 0; i < GC_MAX_DEVICES; i++) { |
| 257 | |
| 258 | dev = gc->dev[i]; |
| 259 | if (!dev) |
| 260 | continue; |
| 261 | |
| 262 | s = gc_status_bit[i]; |
| 263 | |
| 264 | if (s & (gc->pads[GC_NES] | gc->pads[GC_SNES])) { |
| 265 | input_report_abs(dev, ABS_X, !(s & data[6]) - !(s & data[7])); |
| 266 | input_report_abs(dev, ABS_Y, !(s & data[4]) - !(s & data[5])); |
| 267 | } |
| 268 | |
| 269 | if (s & gc->pads[GC_NES]) |
| 270 | for (j = 0; j < 4; j++) |
| 271 | input_report_key(dev, gc_snes_btn[j], s & data[gc_nes_bytes[j]]); |
| 272 | |
| 273 | if (s & gc->pads[GC_SNES]) |
| 274 | for (j = 0; j < 8; j++) |
| 275 | input_report_key(dev, gc_snes_btn[j], s & data[gc_snes_bytes[j]]); |
| 276 | |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 277 | if (s & gc->pads[GC_SNESMOUSE]) { |
| 278 | /* |
| 279 | * The 4 unused bits from SNES controllers appear to be ID bits |
| 280 | * so use them to make sure iwe are dealing with a mouse. |
| 281 | * gamepad is connected. This is important since |
| 282 | * my SNES gamepad sends 1's for bits 16-31, which |
| 283 | * cause the mouse pointer to quickly move to the |
| 284 | * upper left corner of the screen. |
| 285 | */ |
| 286 | if (!(s & data[12]) && !(s & data[13]) && |
| 287 | !(s & data[14]) && (s & data[15])) { |
| 288 | input_report_key(dev, BTN_LEFT, s & data[9]); |
| 289 | input_report_key(dev, BTN_RIGHT, s & data[8]); |
| 290 | |
| 291 | x_rel = y_rel = 0; |
| 292 | for (j = 0; j < 7; j++) { |
| 293 | x_rel <<= 1; |
| 294 | if (data[25 + j] & s) |
| 295 | x_rel |= 1; |
| 296 | |
| 297 | y_rel <<= 1; |
| 298 | if (data[17 + j] & s) |
| 299 | y_rel |= 1; |
| 300 | } |
| 301 | |
| 302 | if (x_rel) { |
| 303 | if (data[24] & s) |
| 304 | x_rel = -x_rel; |
| 305 | input_report_rel(dev, REL_X, x_rel); |
| 306 | } |
| 307 | |
| 308 | if (y_rel) { |
| 309 | if (data[16] & s) |
| 310 | y_rel = -y_rel; |
| 311 | input_report_rel(dev, REL_Y, y_rel); |
| 312 | } |
| 313 | } |
| 314 | } |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 315 | input_sync(dev); |
| 316 | } |
| 317 | } |
| 318 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | /* |
| 320 | * Multisystem joystick support |
| 321 | */ |
| 322 | |
| 323 | #define GC_MULTI_LENGTH 5 /* Multi system joystick packet length is 5 */ |
| 324 | #define GC_MULTI2_LENGTH 6 /* One more bit for one more button */ |
| 325 | |
| 326 | /* |
| 327 | * gc_multi_read_packet() reads a Multisystem joystick packet. |
| 328 | */ |
| 329 | |
| 330 | static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data) |
| 331 | { |
| 332 | int i; |
| 333 | |
| 334 | for (i = 0; i < length; i++) { |
| 335 | parport_write_data(gc->pd->port, ~(1 << i)); |
| 336 | data[i] = parport_read_status(gc->pd->port) ^ 0x7f; |
| 337 | } |
| 338 | } |
| 339 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 340 | static void gc_multi_process_packet(struct gc *gc) |
| 341 | { |
| 342 | unsigned char data[GC_MULTI2_LENGTH]; |
| 343 | struct input_dev *dev; |
| 344 | int i, s; |
| 345 | |
| 346 | gc_multi_read_packet(gc, gc->pads[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH, data); |
| 347 | |
| 348 | for (i = 0; i < GC_MAX_DEVICES; i++) { |
| 349 | |
| 350 | dev = gc->dev[i]; |
| 351 | if (!dev) |
| 352 | continue; |
| 353 | |
| 354 | s = gc_status_bit[i]; |
| 355 | |
| 356 | if (s & (gc->pads[GC_MULTI] | gc->pads[GC_MULTI2])) { |
| 357 | input_report_abs(dev, ABS_X, !(s & data[2]) - !(s & data[3])); |
| 358 | input_report_abs(dev, ABS_Y, !(s & data[0]) - !(s & data[1])); |
| 359 | input_report_key(dev, BTN_TRIGGER, s & data[4]); |
| 360 | } |
| 361 | |
| 362 | if (s & gc->pads[GC_MULTI2]) |
| 363 | input_report_key(dev, BTN_THUMB, s & data[5]); |
| 364 | |
| 365 | input_sync(dev); |
| 366 | } |
| 367 | } |
| 368 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | /* |
| 370 | * PSX support |
| 371 | * |
| 372 | * See documentation at: |
| 373 | * http://www.dim.com/~mackys/psxmemcard/ps-eng2.txt |
| 374 | * http://www.gamesx.com/controldata/psxcont/psxcont.htm |
| 375 | * ftp://milano.usal.es/pablo/ |
| 376 | * |
| 377 | */ |
| 378 | |
| 379 | #define GC_PSX_DELAY 25 /* 25 usec */ |
| 380 | #define GC_PSX_LENGTH 8 /* talk to the controller in bits */ |
| 381 | #define GC_PSX_BYTES 6 /* the maximum number of bytes to read off the controller */ |
| 382 | |
| 383 | #define GC_PSX_MOUSE 1 /* Mouse */ |
| 384 | #define GC_PSX_NEGCON 2 /* NegCon */ |
| 385 | #define GC_PSX_NORMAL 4 /* Digital / Analog or Rumble in Digital mode */ |
| 386 | #define GC_PSX_ANALOG 5 /* Analog in Analog mode / Rumble in Green mode */ |
| 387 | #define GC_PSX_RUMBLE 7 /* Rumble in Red mode */ |
| 388 | |
| 389 | #define GC_PSX_CLOCK 0x04 /* Pin 4 */ |
| 390 | #define GC_PSX_COMMAND 0x01 /* Pin 2 */ |
| 391 | #define GC_PSX_POWER 0xf8 /* Pins 5-9 */ |
| 392 | #define GC_PSX_SELECT 0x02 /* Pin 3 */ |
| 393 | |
| 394 | #define GC_PSX_ID(x) ((x) >> 4) /* High nibble is device type */ |
| 395 | #define GC_PSX_LEN(x) (((x) & 0xf) << 1) /* Low nibble is length in bytes/2 */ |
| 396 | |
| 397 | static int gc_psx_delay = GC_PSX_DELAY; |
| 398 | module_param_named(psx_delay, gc_psx_delay, uint, 0); |
| 399 | MODULE_PARM_DESC(psx_delay, "Delay when accessing Sony PSX controller (usecs)"); |
| 400 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | static short gc_psx_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_HAT0X, ABS_HAT0Y }; |
| 402 | static short gc_psx_btn[] = { BTN_TL, BTN_TR, BTN_TL2, BTN_TR2, BTN_A, BTN_B, BTN_X, BTN_Y, |
| 403 | BTN_START, BTN_SELECT, BTN_THUMBL, BTN_THUMBR }; |
| 404 | static short gc_psx_ddr_btn[] = { BTN_0, BTN_1, BTN_2, BTN_3 }; |
| 405 | |
| 406 | /* |
| 407 | * gc_psx_command() writes 8bit command and reads 8bit data from |
| 408 | * the psx pad. |
| 409 | */ |
| 410 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 411 | static void gc_psx_command(struct gc *gc, int b, unsigned char data[GC_MAX_DEVICES]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | { |
| 413 | int i, j, cmd, read; |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 414 | |
| 415 | for (i = 0; i < GC_MAX_DEVICES; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | data[i] = 0; |
| 417 | |
| 418 | for (i = 0; i < GC_PSX_LENGTH; i++, b >>= 1) { |
| 419 | cmd = (b & 1) ? GC_PSX_COMMAND : 0; |
| 420 | parport_write_data(gc->pd->port, cmd | GC_PSX_POWER); |
| 421 | udelay(gc_psx_delay); |
| 422 | read = parport_read_status(gc->pd->port) ^ 0x80; |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 423 | for (j = 0; j < GC_MAX_DEVICES; j++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | data[j] |= (read & gc_status_bit[j] & (gc->pads[GC_PSX] | gc->pads[GC_DDR])) ? (1 << i) : 0; |
| 425 | parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER); |
| 426 | udelay(gc_psx_delay); |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | /* |
| 431 | * gc_psx_read_packet() reads a whole psx packet and returns |
| 432 | * device identifier code. |
| 433 | */ |
| 434 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 435 | static void gc_psx_read_packet(struct gc *gc, unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES], |
| 436 | unsigned char id[GC_MAX_DEVICES]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | { |
| 438 | int i, j, max_len = 0; |
| 439 | unsigned long flags; |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 440 | unsigned char data2[GC_MAX_DEVICES]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | |
| 442 | parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER); /* Select pad */ |
| 443 | udelay(gc_psx_delay); |
| 444 | parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER); /* Deselect, begin command */ |
| 445 | udelay(gc_psx_delay); |
| 446 | |
| 447 | local_irq_save(flags); |
| 448 | |
| 449 | gc_psx_command(gc, 0x01, data2); /* Access pad */ |
| 450 | gc_psx_command(gc, 0x42, id); /* Get device ids */ |
| 451 | gc_psx_command(gc, 0, data2); /* Dump status */ |
| 452 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 453 | for (i =0; i < GC_MAX_DEVICES; i++) /* Find the longest pad */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | if((gc_status_bit[i] & (gc->pads[GC_PSX] | gc->pads[GC_DDR])) |
| 455 | && (GC_PSX_LEN(id[i]) > max_len) |
| 456 | && (GC_PSX_LEN(id[i]) <= GC_PSX_BYTES)) |
| 457 | max_len = GC_PSX_LEN(id[i]); |
| 458 | |
| 459 | for (i = 0; i < max_len; i++) { /* Read in all the data */ |
| 460 | gc_psx_command(gc, 0, data2); |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 461 | for (j = 0; j < GC_MAX_DEVICES; j++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | data[j][i] = data2[j]; |
| 463 | } |
| 464 | |
| 465 | local_irq_restore(flags); |
| 466 | |
| 467 | parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER); |
| 468 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 469 | for(i = 0; i < GC_MAX_DEVICES; i++) /* Set id's to the real value */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | id[i] = GC_PSX_ID(id[i]); |
| 471 | } |
| 472 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 473 | static void gc_psx_process_packet(struct gc *gc) |
| 474 | { |
| 475 | unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES]; |
| 476 | unsigned char id[GC_MAX_DEVICES]; |
| 477 | struct input_dev *dev; |
| 478 | int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 480 | gc_psx_read_packet(gc, data, id); |
| 481 | |
| 482 | for (i = 0; i < GC_MAX_DEVICES; i++) { |
| 483 | |
| 484 | dev = gc->dev[i]; |
| 485 | if (!dev) |
| 486 | continue; |
| 487 | |
| 488 | switch (id[i]) { |
| 489 | |
| 490 | case GC_PSX_RUMBLE: |
| 491 | |
| 492 | input_report_key(dev, BTN_THUMBL, ~data[i][0] & 0x04); |
| 493 | input_report_key(dev, BTN_THUMBR, ~data[i][0] & 0x02); |
| 494 | |
| 495 | case GC_PSX_NEGCON: |
| 496 | case GC_PSX_ANALOG: |
| 497 | |
| 498 | if (gc->pads[GC_DDR] & gc_status_bit[i]) { |
| 499 | for(j = 0; j < 4; j++) |
| 500 | input_report_key(dev, gc_psx_ddr_btn[j], ~data[i][0] & (0x10 << j)); |
| 501 | } else { |
| 502 | for (j = 0; j < 4; j++) |
| 503 | input_report_abs(dev, gc_psx_abs[j + 2], data[i][j + 2]); |
| 504 | |
| 505 | input_report_abs(dev, ABS_X, 128 + !(data[i][0] & 0x20) * 127 - !(data[i][0] & 0x80) * 128); |
| 506 | input_report_abs(dev, ABS_Y, 128 + !(data[i][0] & 0x40) * 127 - !(data[i][0] & 0x10) * 128); |
| 507 | } |
| 508 | |
| 509 | for (j = 0; j < 8; j++) |
| 510 | input_report_key(dev, gc_psx_btn[j], ~data[i][1] & (1 << j)); |
| 511 | |
| 512 | input_report_key(dev, BTN_START, ~data[i][0] & 0x08); |
| 513 | input_report_key(dev, BTN_SELECT, ~data[i][0] & 0x01); |
| 514 | |
| 515 | input_sync(dev); |
| 516 | |
| 517 | break; |
| 518 | |
| 519 | case GC_PSX_NORMAL: |
| 520 | if (gc->pads[GC_DDR] & gc_status_bit[i]) { |
| 521 | for(j = 0; j < 4; j++) |
| 522 | input_report_key(dev, gc_psx_ddr_btn[j], ~data[i][0] & (0x10 << j)); |
| 523 | } else { |
| 524 | input_report_abs(dev, ABS_X, 128 + !(data[i][0] & 0x20) * 127 - !(data[i][0] & 0x80) * 128); |
| 525 | input_report_abs(dev, ABS_Y, 128 + !(data[i][0] & 0x40) * 127 - !(data[i][0] & 0x10) * 128); |
| 526 | |
| 527 | /* for some reason if the extra axes are left unset they drift */ |
| 528 | /* for (j = 0; j < 4; j++) |
| 529 | input_report_abs(dev, gc_psx_abs[j + 2], 128); |
| 530 | * This needs to be debugged properly, |
| 531 | * maybe fuzz processing needs to be done in input_sync() |
| 532 | * --vojtech |
| 533 | */ |
| 534 | } |
| 535 | |
| 536 | for (j = 0; j < 8; j++) |
| 537 | input_report_key(dev, gc_psx_btn[j], ~data[i][1] & (1 << j)); |
| 538 | |
| 539 | input_report_key(dev, BTN_START, ~data[i][0] & 0x08); |
| 540 | input_report_key(dev, BTN_SELECT, ~data[i][0] & 0x01); |
| 541 | |
| 542 | input_sync(dev); |
| 543 | |
| 544 | break; |
| 545 | |
| 546 | case 0: /* not a pad, ignore */ |
| 547 | break; |
| 548 | } |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | /* |
| 553 | * gc_timer() initiates reads of console pads data. |
| 554 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | |
| 556 | static void gc_timer(unsigned long private) |
| 557 | { |
| 558 | struct gc *gc = (void *) private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | |
| 560 | /* |
| 561 | * N64 pads - must be read first, any read confuses them for 200 us |
| 562 | */ |
| 563 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 564 | if (gc->pads[GC_N64]) |
| 565 | gc_n64_process_packet(gc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
| 567 | /* |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 568 | * NES and SNES pads or mouse |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | */ |
| 570 | |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 571 | if (gc->pads[GC_NES] || gc->pads[GC_SNES] || gc->pads[GC_SNESMOUSE]) |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 572 | gc_nes_process_packet(gc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | |
| 574 | /* |
| 575 | * Multi and Multi2 joysticks |
| 576 | */ |
| 577 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 578 | if (gc->pads[GC_MULTI] || gc->pads[GC_MULTI2]) |
| 579 | gc_multi_process_packet(gc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | |
| 581 | /* |
| 582 | * PSX controllers |
| 583 | */ |
| 584 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 585 | if (gc->pads[GC_PSX] || gc->pads[GC_DDR]) |
| 586 | gc_psx_process_packet(gc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | |
| 588 | mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME); |
| 589 | } |
| 590 | |
| 591 | static int gc_open(struct input_dev *dev) |
| 592 | { |
Dmitry Torokhov | 8715c1c | 2007-04-12 01:34:14 -0400 | [diff] [blame] | 593 | struct gc *gc = input_get_drvdata(dev); |
Dmitry Torokhov | 8b1a198 | 2005-05-29 02:29:52 -0500 | [diff] [blame] | 594 | int err; |
| 595 | |
Ingo Molnar | 72ba9f0 | 2006-02-19 00:22:30 -0500 | [diff] [blame] | 596 | err = mutex_lock_interruptible(&gc->mutex); |
Dmitry Torokhov | 8b1a198 | 2005-05-29 02:29:52 -0500 | [diff] [blame] | 597 | if (err) |
| 598 | return err; |
| 599 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | if (!gc->used++) { |
| 601 | parport_claim(gc->pd); |
| 602 | parport_write_control(gc->pd->port, 0x04); |
| 603 | mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME); |
| 604 | } |
Dmitry Torokhov | 8b1a198 | 2005-05-29 02:29:52 -0500 | [diff] [blame] | 605 | |
Ingo Molnar | 72ba9f0 | 2006-02-19 00:22:30 -0500 | [diff] [blame] | 606 | mutex_unlock(&gc->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | static void gc_close(struct input_dev *dev) |
| 611 | { |
Dmitry Torokhov | 8715c1c | 2007-04-12 01:34:14 -0400 | [diff] [blame] | 612 | struct gc *gc = input_get_drvdata(dev); |
Dmitry Torokhov | 8b1a198 | 2005-05-29 02:29:52 -0500 | [diff] [blame] | 613 | |
Ingo Molnar | 72ba9f0 | 2006-02-19 00:22:30 -0500 | [diff] [blame] | 614 | mutex_lock(&gc->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | if (!--gc->used) { |
Dmitry Torokhov | 8b1a198 | 2005-05-29 02:29:52 -0500 | [diff] [blame] | 616 | del_timer_sync(&gc->timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | parport_write_control(gc->pd->port, 0x00); |
| 618 | parport_release(gc->pd); |
| 619 | } |
Ingo Molnar | 72ba9f0 | 2006-02-19 00:22:30 -0500 | [diff] [blame] | 620 | mutex_unlock(&gc->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | } |
| 622 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 623 | static int __init gc_setup_pad(struct gc *gc, int idx, int pad_type) |
| 624 | { |
| 625 | struct input_dev *input_dev; |
| 626 | int i; |
| 627 | |
| 628 | if (!pad_type) |
| 629 | return 0; |
| 630 | |
| 631 | if (pad_type < 1 || pad_type > GC_MAX) { |
| 632 | printk(KERN_WARNING "gamecon.c: Pad type %d unknown\n", pad_type); |
| 633 | return -EINVAL; |
| 634 | } |
| 635 | |
| 636 | gc->dev[idx] = input_dev = input_allocate_device(); |
| 637 | if (!input_dev) { |
| 638 | printk(KERN_ERR "gamecon.c: Not enough memory for input device\n"); |
| 639 | return -ENOMEM; |
| 640 | } |
| 641 | |
| 642 | input_dev->name = gc_names[pad_type]; |
| 643 | input_dev->phys = gc->phys[idx]; |
| 644 | input_dev->id.bustype = BUS_PARPORT; |
| 645 | input_dev->id.vendor = 0x0001; |
| 646 | input_dev->id.product = pad_type; |
| 647 | input_dev->id.version = 0x0100; |
Dmitry Torokhov | 8715c1c | 2007-04-12 01:34:14 -0400 | [diff] [blame] | 648 | |
| 649 | input_set_drvdata(input_dev, gc); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 650 | |
| 651 | input_dev->open = gc_open; |
| 652 | input_dev->close = gc_close; |
| 653 | |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 654 | if (pad_type != GC_SNESMOUSE) { |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 655 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 656 | |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 657 | for (i = 0; i < 2; i++) |
| 658 | input_set_abs_params(input_dev, ABS_X + i, -1, 1, 0, 0); |
| 659 | } else |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 660 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 661 | |
| 662 | gc->pads[0] |= gc_status_bit[idx]; |
| 663 | gc->pads[pad_type] |= gc_status_bit[idx]; |
| 664 | |
| 665 | switch (pad_type) { |
| 666 | |
| 667 | case GC_N64: |
| 668 | for (i = 0; i < 10; i++) |
| 669 | set_bit(gc_n64_btn[i], input_dev->keybit); |
| 670 | |
| 671 | for (i = 0; i < 2; i++) { |
| 672 | input_set_abs_params(input_dev, ABS_X + i, -127, 126, 0, 2); |
| 673 | input_set_abs_params(input_dev, ABS_HAT0X + i, -1, 1, 0, 0); |
| 674 | } |
| 675 | |
| 676 | break; |
| 677 | |
Raphael Assenat | b157d55 | 2006-04-02 00:10:05 -0500 | [diff] [blame] | 678 | case GC_SNESMOUSE: |
| 679 | set_bit(BTN_LEFT, input_dev->keybit); |
| 680 | set_bit(BTN_RIGHT, input_dev->keybit); |
| 681 | set_bit(REL_X, input_dev->relbit); |
| 682 | set_bit(REL_Y, input_dev->relbit); |
| 683 | break; |
| 684 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 685 | case GC_SNES: |
| 686 | for (i = 4; i < 8; i++) |
| 687 | set_bit(gc_snes_btn[i], input_dev->keybit); |
| 688 | case GC_NES: |
| 689 | for (i = 0; i < 4; i++) |
| 690 | set_bit(gc_snes_btn[i], input_dev->keybit); |
| 691 | break; |
| 692 | |
| 693 | case GC_MULTI2: |
| 694 | set_bit(BTN_THUMB, input_dev->keybit); |
| 695 | case GC_MULTI: |
| 696 | set_bit(BTN_TRIGGER, input_dev->keybit); |
| 697 | break; |
| 698 | |
| 699 | case GC_PSX: |
| 700 | for (i = 0; i < 6; i++) |
| 701 | input_set_abs_params(input_dev, gc_psx_abs[i], 4, 252, 0, 2); |
| 702 | for (i = 0; i < 12; i++) |
| 703 | set_bit(gc_psx_btn[i], input_dev->keybit); |
| 704 | |
| 705 | break; |
| 706 | |
| 707 | case GC_DDR: |
| 708 | for (i = 0; i < 4; i++) |
| 709 | set_bit(gc_psx_ddr_btn[i], input_dev->keybit); |
| 710 | for (i = 0; i < 12; i++) |
| 711 | set_bit(gc_psx_btn[i], input_dev->keybit); |
| 712 | |
| 713 | break; |
| 714 | } |
| 715 | |
| 716 | return 0; |
| 717 | } |
| 718 | |
| 719 | static struct gc __init *gc_probe(int parport, int *pads, int n_pads) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | { |
| 721 | struct gc *gc; |
| 722 | struct parport *pp; |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 723 | struct pardevice *pd; |
| 724 | int i; |
| 725 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 727 | pp = parport_find_number(parport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | if (!pp) { |
| 729 | printk(KERN_ERR "gamecon.c: no such parport\n"); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 730 | err = -EINVAL; |
| 731 | goto err_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | } |
| 733 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 734 | pd = parport_register_device(pp, "gamecon", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); |
| 735 | if (!pd) { |
| 736 | printk(KERN_ERR "gamecon.c: parport busy already - lp.o loaded?\n"); |
| 737 | err = -EBUSY; |
| 738 | goto err_put_pp; |
| 739 | } |
| 740 | |
| 741 | gc = kzalloc(sizeof(struct gc), GFP_KERNEL); |
| 742 | if (!gc) { |
| 743 | printk(KERN_ERR "gamecon.c: Not enough memory\n"); |
| 744 | err = -ENOMEM; |
| 745 | goto err_unreg_pardev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | } |
Dmitry Torokhov | 8b1a198 | 2005-05-29 02:29:52 -0500 | [diff] [blame] | 747 | |
Ingo Molnar | 72ba9f0 | 2006-02-19 00:22:30 -0500 | [diff] [blame] | 748 | mutex_init(&gc->mutex); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 749 | gc->pd = pd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | init_timer(&gc->timer); |
| 751 | gc->timer.data = (long) gc; |
| 752 | gc->timer.function = gc_timer; |
| 753 | |
Dmitry Torokhov | c7fd018 | 2006-01-29 21:52:04 -0500 | [diff] [blame] | 754 | for (i = 0; i < n_pads && i < GC_MAX_DEVICES; i++) { |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 755 | if (!pads[i]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | continue; |
| 757 | |
Dmitry Torokhov | 10ca4c0 | 2006-06-26 01:45:48 -0400 | [diff] [blame] | 758 | snprintf(gc->phys[i], sizeof(gc->phys[i]), |
| 759 | "%s/input%d", gc->pd->port->name, i); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 760 | err = gc_setup_pad(gc, i, pads[i]); |
| 761 | if (err) |
Dmitry Torokhov | 77fc46c | 2006-01-29 21:52:11 -0500 | [diff] [blame] | 762 | goto err_unreg_devs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
Dmitry Torokhov | 77fc46c | 2006-01-29 21:52:11 -0500 | [diff] [blame] | 764 | err = input_register_device(gc->dev[i]); |
| 765 | if (err) |
| 766 | goto err_free_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | } |
| 768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | if (!gc->pads[0]) { |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 770 | printk(KERN_ERR "gamecon.c: No valid devices specified\n"); |
| 771 | err = -EINVAL; |
| 772 | goto err_free_gc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | } |
| 774 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 775 | parport_put_port(pp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | return gc; |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 777 | |
Dmitry Torokhov | 77fc46c | 2006-01-29 21:52:11 -0500 | [diff] [blame] | 778 | err_free_dev: |
| 779 | input_free_device(gc->dev[i]); |
| 780 | err_unreg_devs: |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 781 | while (--i >= 0) |
Dmitry Torokhov | 77fc46c | 2006-01-29 21:52:11 -0500 | [diff] [blame] | 782 | if (gc->dev[i]) |
| 783 | input_unregister_device(gc->dev[i]); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 784 | err_free_gc: |
| 785 | kfree(gc); |
| 786 | err_unreg_pardev: |
| 787 | parport_unregister_device(pd); |
| 788 | err_put_pp: |
| 789 | parport_put_port(pp); |
| 790 | err_out: |
| 791 | return ERR_PTR(err); |
| 792 | } |
| 793 | |
Dmitry Torokhov | 77fc46c | 2006-01-29 21:52:11 -0500 | [diff] [blame] | 794 | static void gc_remove(struct gc *gc) |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 795 | { |
| 796 | int i; |
| 797 | |
| 798 | for (i = 0; i < GC_MAX_DEVICES; i++) |
| 799 | if (gc->dev[i]) |
| 800 | input_unregister_device(gc->dev[i]); |
| 801 | parport_unregister_device(gc->pd); |
| 802 | kfree(gc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | } |
| 804 | |
| 805 | static int __init gc_init(void) |
| 806 | { |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 807 | int i; |
| 808 | int have_dev = 0; |
| 809 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 811 | for (i = 0; i < GC_MAX_PORTS; i++) { |
Dmitry Torokhov | 7816723 | 2007-05-03 00:52:51 -0400 | [diff] [blame] | 812 | if (gc_cfg[i].nargs == 0 || gc_cfg[i].args[0] < 0) |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 813 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | |
Dmitry Torokhov | 7816723 | 2007-05-03 00:52:51 -0400 | [diff] [blame] | 815 | if (gc_cfg[i].nargs < 2) { |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 816 | printk(KERN_ERR "gamecon.c: at least one device must be specified\n"); |
| 817 | err = -EINVAL; |
| 818 | break; |
| 819 | } |
| 820 | |
Dmitry Torokhov | 7816723 | 2007-05-03 00:52:51 -0400 | [diff] [blame] | 821 | gc_base[i] = gc_probe(gc_cfg[i].args[0], |
| 822 | gc_cfg[i].args + 1, gc_cfg[i].nargs - 1); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 823 | if (IS_ERR(gc_base[i])) { |
| 824 | err = PTR_ERR(gc_base[i]); |
| 825 | break; |
| 826 | } |
| 827 | |
| 828 | have_dev = 1; |
| 829 | } |
| 830 | |
| 831 | if (err) { |
| 832 | while (--i >= 0) |
Dmitry Torokhov | 77fc46c | 2006-01-29 21:52:11 -0500 | [diff] [blame] | 833 | if (gc_base[i]) |
| 834 | gc_remove(gc_base[i]); |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 835 | return err; |
| 836 | } |
| 837 | |
| 838 | return have_dev ? 0 : -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | } |
| 840 | |
| 841 | static void __exit gc_exit(void) |
| 842 | { |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 843 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | |
Dmitry Torokhov | 17dd3f0 | 2005-09-15 02:01:52 -0500 | [diff] [blame] | 845 | for (i = 0; i < GC_MAX_PORTS; i++) |
| 846 | if (gc_base[i]) |
| 847 | gc_remove(gc_base[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | } |
| 849 | |
| 850 | module_init(gc_init); |
| 851 | module_exit(gc_exit); |