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 | * |
| 3 | * keyboard input driver for i2c IR remote controls |
| 4 | * |
| 5 | * Copyright (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org> |
| 6 | * modified for PixelView (BT878P+W/FM) by |
| 7 | * Michal Kochanowicz <mkochano@pld.org.pl> |
| 8 | * Christoph Bartelmus <lirc@bartelmus.de> |
| 9 | * modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by |
| 10 | * Ulrich Mueller <ulrich.mueller42@web.de> |
Markus Rechberger | c365864 | 2005-11-08 21:37:21 -0800 | [diff] [blame] | 11 | * modified for em2820 based USB TV tuners by |
| 12 | * Markus Rechberger <mrechberger@gmail.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
| 29 | |
| 30 | #include <linux/module.h> |
| 31 | #include <linux/moduleparam.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/kernel.h> |
| 34 | #include <linux/sched.h> |
| 35 | #include <linux/string.h> |
| 36 | #include <linux/timer.h> |
| 37 | #include <linux/delay.h> |
| 38 | #include <linux/errno.h> |
| 39 | #include <linux/slab.h> |
| 40 | #include <linux/i2c.h> |
| 41 | #include <linux/workqueue.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <asm/semaphore.h> |
Mauro Carvalho Chehab | 674434c | 2005-12-12 00:37:28 -0800 | [diff] [blame] | 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <media/ir-common.h> |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 45 | #include <media/ir-kbd-i2c.h> |
Markus Rechberger | c365864 | 2005-11-08 21:37:21 -0800 | [diff] [blame] | 46 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | /* ----------------------------------------------------------------------- */ |
| 48 | /* insmod parameters */ |
| 49 | |
| 50 | static int debug; |
| 51 | module_param(debug, int, 0644); /* debug level (0,1,2) */ |
| 52 | |
J.O. Aho | bf47e4e | 2006-01-23 09:34:06 -0200 | [diff] [blame] | 53 | static int hauppauge = 0; |
| 54 | module_param(hauppauge, int, 0644); /* Choose Hauppauge remote */ |
| 55 | MODULE_PARM_DESC(hauppauge, "Specify Hauppauge remote: 0=black, 1=grey (defaults to 0)"); |
| 56 | |
| 57 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #define DEVNAME "ir-kbd-i2c" |
| 59 | #define dprintk(level, fmt, arg...) if (debug >= level) \ |
| 60 | printk(KERN_DEBUG DEVNAME ": " fmt , ## arg) |
| 61 | |
| 62 | /* ----------------------------------------------------------------------- */ |
| 63 | |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 64 | static int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | { |
| 66 | unsigned char buf[3]; |
| 67 | int start, toggle, dev, code; |
| 68 | |
| 69 | /* poll IR chip */ |
| 70 | if (3 != i2c_master_recv(&ir->c,buf,3)) |
| 71 | return -EIO; |
| 72 | |
| 73 | /* split rc5 data block ... */ |
| 74 | start = (buf[0] >> 6) & 3; |
| 75 | toggle = (buf[0] >> 5) & 1; |
| 76 | dev = buf[0] & 0x1f; |
| 77 | code = (buf[1] >> 2) & 0x3f; |
| 78 | |
| 79 | if (3 != start) |
| 80 | /* no key pressed */ |
| 81 | return 0; |
| 82 | dprintk(1,"ir hauppauge (rc5): s%d t%d dev=%d code=%d\n", |
| 83 | start, toggle, dev, code); |
| 84 | |
| 85 | /* return key */ |
| 86 | *ir_key = code; |
| 87 | *ir_raw = (start << 12) | (toggle << 11) | (dev << 6) | code; |
| 88 | return 1; |
| 89 | } |
| 90 | |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 91 | static int get_key_pixelview(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | { |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 93 | unsigned char b; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
| 95 | /* poll IR chip */ |
| 96 | if (1 != i2c_master_recv(&ir->c,&b,1)) { |
| 97 | dprintk(1,"read error\n"); |
| 98 | return -EIO; |
| 99 | } |
| 100 | *ir_key = b; |
| 101 | *ir_raw = b; |
| 102 | return 1; |
| 103 | } |
| 104 | |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 105 | static int get_key_pv951(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | { |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 107 | unsigned char b; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
| 109 | /* poll IR chip */ |
| 110 | if (1 != i2c_master_recv(&ir->c,&b,1)) { |
| 111 | dprintk(1,"read error\n"); |
| 112 | return -EIO; |
| 113 | } |
| 114 | |
| 115 | /* ignore 0xaa */ |
| 116 | if (b==0xaa) |
| 117 | return 0; |
| 118 | dprintk(2,"key %02x\n", b); |
| 119 | |
| 120 | *ir_key = b; |
| 121 | *ir_raw = b; |
| 122 | return 1; |
| 123 | } |
| 124 | |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 125 | static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | { |
| 127 | unsigned char b; |
| 128 | |
| 129 | /* poll IR chip */ |
| 130 | if (1 != i2c_master_recv(&ir->c,&b,1)) { |
| 131 | dprintk(1,"read error\n"); |
| 132 | return -EIO; |
| 133 | } |
| 134 | |
| 135 | /* it seems that 0xFE indicates that a button is still hold |
Mauro Carvalho Chehab | 4f9c05a | 2005-11-08 21:37:36 -0800 | [diff] [blame] | 136 | down, while 0xff indicates that no button is hold |
| 137 | down. 0xfe sequences are sometimes interrupted by 0xFF */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
| 139 | dprintk(2,"key %02x\n", b); |
| 140 | |
Mauro Carvalho Chehab | 4f9c05a | 2005-11-08 21:37:36 -0800 | [diff] [blame] | 141 | if (b == 0xff) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | return 0; |
| 143 | |
Mauro Carvalho Chehab | 4f9c05a | 2005-11-08 21:37:36 -0800 | [diff] [blame] | 144 | if (b == 0xfe) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | /* keep old data */ |
| 146 | return 1; |
| 147 | |
| 148 | *ir_key = b; |
| 149 | *ir_raw = b; |
| 150 | return 1; |
| 151 | } |
| 152 | |
Sylvain Pasche | b93eedb | 2006-03-25 23:14:42 -0300 | [diff] [blame] | 153 | /* Common (grey or coloured) pinnacle PCTV remote handling |
Ricardo Cerqueira | 8069695 | 2005-11-13 16:07:49 -0800 | [diff] [blame] | 154 | * |
Ricardo Cerqueira | 8069695 | 2005-11-13 16:07:49 -0800 | [diff] [blame] | 155 | */ |
Sylvain Pasche | b93eedb | 2006-03-25 23:14:42 -0300 | [diff] [blame] | 156 | static int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw, |
| 157 | int parity_offset, int marker, int code_modulo) |
Ricardo Cerqueira | 8069695 | 2005-11-13 16:07:49 -0800 | [diff] [blame] | 158 | { |
| 159 | unsigned char b[4]; |
| 160 | unsigned int start = 0,parity = 0,code = 0; |
| 161 | |
| 162 | /* poll IR chip */ |
| 163 | if (4 != i2c_master_recv(&ir->c,b,4)) { |
| 164 | dprintk(2,"read error\n"); |
| 165 | return -EIO; |
| 166 | } |
| 167 | |
| 168 | for (start = 0; start<4; start++) { |
Sylvain Pasche | b93eedb | 2006-03-25 23:14:42 -0300 | [diff] [blame] | 169 | if (b[start] == marker) { |
| 170 | code=b[(start+parity_offset+1)%4]; |
| 171 | parity=b[(start+parity_offset)%4]; |
Ricardo Cerqueira | 8069695 | 2005-11-13 16:07:49 -0800 | [diff] [blame] | 172 | } |
| 173 | } |
| 174 | |
| 175 | /* Empty Request */ |
| 176 | if (parity==0) |
| 177 | return 0; |
| 178 | |
| 179 | /* Repeating... */ |
| 180 | if (ir->old == parity) |
| 181 | return 0; |
| 182 | |
Ricardo Cerqueira | 8069695 | 2005-11-13 16:07:49 -0800 | [diff] [blame] | 183 | ir->old = parity; |
| 184 | |
Sylvain Pasche | b93eedb | 2006-03-25 23:14:42 -0300 | [diff] [blame] | 185 | /* drop special codes when a key is held down a long time for the grey controller |
| 186 | In this case, the second bit of the code is asserted */ |
| 187 | if (marker == 0xfe && (code & 0x40)) |
| 188 | return 0; |
Ricardo Cerqueira | 8069695 | 2005-11-13 16:07:49 -0800 | [diff] [blame] | 189 | |
Sylvain Pasche | b93eedb | 2006-03-25 23:14:42 -0300 | [diff] [blame] | 190 | code %= code_modulo; |
Ricardo Cerqueira | 8069695 | 2005-11-13 16:07:49 -0800 | [diff] [blame] | 191 | |
| 192 | *ir_raw = code; |
| 193 | *ir_key = code; |
| 194 | |
| 195 | dprintk(1,"Pinnacle PCTV key %02x\n", code); |
| 196 | |
| 197 | return 1; |
| 198 | } |
| 199 | |
Sylvain Pasche | b93eedb | 2006-03-25 23:14:42 -0300 | [diff] [blame] | 200 | /* The grey pinnacle PCTV remote |
| 201 | * |
| 202 | * There are one issue with this remote: |
| 203 | * - I2c packet does not change when the same key is pressed quickly. The workaround |
| 204 | * is to hold down each key for about half a second, so that another code is generated |
| 205 | * in the i2c packet, and the function can distinguish key presses. |
| 206 | * |
| 207 | * Sylvain Pasche <sylvain.pasche@gmail.com> |
| 208 | */ |
| 209 | int get_key_pinnacle_grey(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
| 210 | { |
| 211 | |
| 212 | return get_key_pinnacle(ir, ir_key, ir_raw, 1, 0xfe, 0xff); |
| 213 | } |
| 214 | |
| 215 | EXPORT_SYMBOL_GPL(get_key_pinnacle_grey); |
| 216 | |
| 217 | |
| 218 | /* The new pinnacle PCTV remote (with the colored buttons) |
| 219 | * |
| 220 | * Ricardo Cerqueira <v4l@cerqueira.org> |
| 221 | */ |
| 222 | int get_key_pinnacle_color(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
| 223 | { |
| 224 | /* code_modulo parameter (0x88) is used to reduce code value to fit inside IR_KEYTAB_SIZE |
| 225 | * |
| 226 | * this is the only value that results in 42 unique |
| 227 | * codes < 128 |
| 228 | */ |
| 229 | |
| 230 | return get_key_pinnacle(ir, ir_key, ir_raw, 2, 0x80, 0x88); |
| 231 | } |
| 232 | |
| 233 | EXPORT_SYMBOL_GPL(get_key_pinnacle_color); |
Ricardo Cerqueira | 8069695 | 2005-11-13 16:07:49 -0800 | [diff] [blame] | 234 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | /* ----------------------------------------------------------------------- */ |
| 236 | |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 237 | static void ir_key_poll(struct IR_i2c *ir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | { |
| 239 | static u32 ir_key, ir_raw; |
| 240 | int rc; |
| 241 | |
| 242 | dprintk(2,"ir_poll_key\n"); |
| 243 | rc = ir->get_key(ir, &ir_key, &ir_raw); |
| 244 | if (rc < 0) { |
| 245 | dprintk(2,"error\n"); |
| 246 | return; |
| 247 | } |
| 248 | |
| 249 | if (0 == rc) { |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 250 | ir_input_nokey(ir->input, &ir->ir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | } else { |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 252 | ir_input_keydown(ir->input, &ir->ir, ir_key, ir_raw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | } |
| 254 | } |
| 255 | |
| 256 | static void ir_timer(unsigned long data) |
| 257 | { |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 258 | struct IR_i2c *ir = (struct IR_i2c*)data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | schedule_work(&ir->work); |
| 260 | } |
| 261 | |
| 262 | static void ir_work(void *data) |
| 263 | { |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 264 | struct IR_i2c *ir = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | ir_key_poll(ir); |
| 266 | mod_timer(&ir->timer, jiffies+HZ/10); |
| 267 | } |
| 268 | |
| 269 | /* ----------------------------------------------------------------------- */ |
| 270 | |
| 271 | static int ir_attach(struct i2c_adapter *adap, int addr, |
| 272 | unsigned short flags, int kind); |
| 273 | static int ir_detach(struct i2c_client *client); |
| 274 | static int ir_probe(struct i2c_adapter *adap); |
| 275 | |
| 276 | static struct i2c_driver driver = { |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 277 | .driver = { |
Mauro Carvalho Chehab | cab462f | 2006-01-09 15:53:26 -0200 | [diff] [blame] | 278 | .name = "ir-kbd-i2c", |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 279 | }, |
Mauro Carvalho Chehab | dd81540 | 2005-12-12 00:37:31 -0800 | [diff] [blame] | 280 | .id = I2C_DRIVERID_INFRARED, |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 281 | .attach_adapter = ir_probe, |
| 282 | .detach_client = ir_detach, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | }; |
| 284 | |
| 285 | static struct i2c_client client_template = |
| 286 | { |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 287 | .name = "unset", |
| 288 | .driver = &driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | }; |
| 290 | |
| 291 | static int ir_attach(struct i2c_adapter *adap, int addr, |
| 292 | unsigned short flags, int kind) |
| 293 | { |
| 294 | IR_KEYTAB_TYPE *ir_codes = NULL; |
| 295 | char *name; |
| 296 | int ir_type; |
Mauro Carvalho Chehab | afd1a0c | 2005-12-12 00:37:27 -0800 | [diff] [blame] | 297 | struct IR_i2c *ir; |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 298 | struct input_dev *input_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | |
Mauro Carvalho Chehab | 674434c | 2005-12-12 00:37:28 -0800 | [diff] [blame] | 300 | ir = kzalloc(sizeof(struct IR_i2c),GFP_KERNEL); |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 301 | input_dev = input_allocate_device(); |
| 302 | if (!ir || !input_dev) { |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 303 | input_free_device(input_dev); |
Mauro Carvalho Chehab | d21838d | 2006-01-09 15:25:21 -0200 | [diff] [blame] | 304 | kfree(ir); |
Mauro Carvalho Chehab | afd1a0c | 2005-12-12 00:37:27 -0800 | [diff] [blame] | 305 | return -ENOMEM; |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 306 | } |
Mauro Carvalho Chehab | d21838d | 2006-01-09 15:25:21 -0200 | [diff] [blame] | 307 | memset(ir,0,sizeof(*ir)); |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 308 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | ir->c = client_template; |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 310 | ir->input = input_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | ir->c.adapter = adap; |
| 313 | ir->c.addr = addr; |
| 314 | |
Mauro Carvalho Chehab | d21838d | 2006-01-09 15:25:21 -0200 | [diff] [blame] | 315 | i2c_set_clientdata(&ir->c, ir); |
| 316 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | switch(addr) { |
| 318 | case 0x64: |
| 319 | name = "Pixelview"; |
| 320 | ir->get_key = get_key_pixelview; |
| 321 | ir_type = IR_TYPE_OTHER; |
| 322 | ir_codes = ir_codes_empty; |
| 323 | break; |
| 324 | case 0x4b: |
| 325 | name = "PV951"; |
| 326 | ir->get_key = get_key_pv951; |
| 327 | ir_type = IR_TYPE_OTHER; |
| 328 | ir_codes = ir_codes_pv951; |
| 329 | break; |
| 330 | case 0x18: |
| 331 | case 0x1a: |
| 332 | name = "Hauppauge"; |
| 333 | ir->get_key = get_key_haup; |
| 334 | ir_type = IR_TYPE_RC5; |
J.O. Aho | bf47e4e | 2006-01-23 09:34:06 -0200 | [diff] [blame] | 335 | if (hauppauge == 1) { |
Ricardo Cerqueira | 4c0f631 | 2006-01-23 09:42:06 -0200 | [diff] [blame] | 336 | ir_codes = ir_codes_hauppauge_new; |
J.O. Aho | bf47e4e | 2006-01-23 09:34:06 -0200 | [diff] [blame] | 337 | } else { |
| 338 | ir_codes = ir_codes_rc5_tv; |
| 339 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | break; |
| 341 | case 0x30: |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 342 | name = "KNC One"; |
| 343 | ir->get_key = get_key_knc1; |
| 344 | ir_type = IR_TYPE_OTHER; |
| 345 | ir_codes = ir_codes_empty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | break; |
| 347 | case 0x7a: |
Ricardo Cerqueira | ac9cd97 | 2005-11-08 21:37:56 -0800 | [diff] [blame] | 348 | case 0x47: |
| 349 | /* Handled by saa7134-input */ |
| 350 | name = "SAA713x remote"; |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 351 | ir_type = IR_TYPE_OTHER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | break; |
| 353 | default: |
| 354 | /* shouldn't happen */ |
| 355 | printk(DEVNAME ": Huh? unknown i2c address (0x%02x)?\n",addr); |
| 356 | kfree(ir); |
| 357 | return -1; |
| 358 | } |
| 359 | |
Ricardo Cerqueira | ac9cd97 | 2005-11-08 21:37:56 -0800 | [diff] [blame] | 360 | /* Sets name */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (%s)", name); |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 362 | ir->ir_codes=ir_codes; |
| 363 | |
| 364 | /* register i2c device |
| 365 | * At device register, IR codes may be changed to be |
| 366 | * board dependent. |
Mauro Carvalho Chehab | 674434c | 2005-12-12 00:37:28 -0800 | [diff] [blame] | 367 | */ |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 368 | i2c_attach_client(&ir->c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
Ricardo Cerqueira | ac9cd97 | 2005-11-08 21:37:56 -0800 | [diff] [blame] | 370 | /* If IR not supported or disabled, unregisters driver */ |
| 371 | if (ir->get_key == NULL) { |
| 372 | i2c_detach_client(&ir->c); |
| 373 | kfree(ir); |
| 374 | return -1; |
| 375 | } |
| 376 | |
| 377 | /* Phys addr can only be set after attaching (for ir->c.dev.bus_id) */ |
| 378 | snprintf(ir->phys, sizeof(ir->phys), "%s/%s/ir0", |
| 379 | ir->c.adapter->dev.bus_id, |
| 380 | ir->c.dev.bus_id); |
| 381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | /* init + register input device */ |
Mauro Carvalho Chehab | d21838d | 2006-01-09 15:25:21 -0200 | [diff] [blame] | 383 | ir_input_init(input_dev,&ir->ir,ir_type,ir->ir_codes); |
| 384 | input_dev->id.bustype = BUS_I2C; |
| 385 | input_dev->name = ir->c.name; |
| 386 | input_dev->phys = ir->phys; |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 387 | |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 388 | /* register event device */ |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 389 | input_register_device(ir->input); |
Mauro Carvalho Chehab | d21838d | 2006-01-09 15:25:21 -0200 | [diff] [blame] | 390 | printk(DEVNAME ": %s detected at %s [%s]\n", |
| 391 | ir->input->name,ir->input->phys,adap->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
| 393 | /* start polling via eventd */ |
| 394 | INIT_WORK(&ir->work, ir_work, ir); |
| 395 | init_timer(&ir->timer); |
| 396 | ir->timer.function = ir_timer; |
| 397 | ir->timer.data = (unsigned long)ir; |
| 398 | schedule_work(&ir->work); |
| 399 | |
| 400 | return 0; |
| 401 | } |
| 402 | |
| 403 | static int ir_detach(struct i2c_client *client) |
| 404 | { |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 405 | struct IR_i2c *ir = i2c_get_clientdata(client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
| 407 | /* kill outstanding polls */ |
| 408 | del_timer(&ir->timer); |
| 409 | flush_scheduled_work(); |
| 410 | |
| 411 | /* unregister devices */ |
Dmitry Torokhov | b7df391 | 2005-09-15 02:01:53 -0500 | [diff] [blame] | 412 | input_unregister_device(ir->input); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | i2c_detach_client(&ir->c); |
| 414 | |
| 415 | /* free memory */ |
| 416 | kfree(ir); |
| 417 | return 0; |
| 418 | } |
| 419 | |
| 420 | static int ir_probe(struct i2c_adapter *adap) |
| 421 | { |
| 422 | |
| 423 | /* The external IR receiver is at i2c address 0x34 (0x35 for |
| 424 | reads). Future Hauppauge cards will have an internal |
| 425 | receiver at 0x30 (0x31 for reads). In theory, both can be |
| 426 | fitted, and Hauppauge suggest an external overrides an |
| 427 | internal. |
| 428 | |
| 429 | That's why we probe 0x1a (~0x34) first. CB |
| 430 | */ |
| 431 | |
| 432 | static const int probe_bttv[] = { 0x1a, 0x18, 0x4b, 0x64, 0x30, -1}; |
Ricardo Cerqueira | c2f6f9d | 2005-11-08 21:37:51 -0800 | [diff] [blame] | 433 | static const int probe_saa7134[] = { 0x7a, 0x47, -1 }; |
Mauro Carvalho Chehab | b296fc6 | 2005-11-08 21:38:37 -0800 | [diff] [blame] | 434 | static const int probe_em28XX[] = { 0x30, 0x47, -1 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | const int *probe = NULL; |
Mauro Carvalho Chehab | 4f9c05a | 2005-11-08 21:37:36 -0800 | [diff] [blame] | 436 | struct i2c_client c; |
| 437 | unsigned char buf; |
| 438 | int i,rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
| 440 | switch (adap->id) { |
Jean Delvare | c7a4653 | 2005-08-11 23:41:56 +0200 | [diff] [blame] | 441 | case I2C_HW_B_BT848: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | probe = probe_bttv; |
| 443 | break; |
Hans Verkuil | 51dab14 | 2006-03-25 08:10:12 -0300 | [diff] [blame] | 444 | case I2C_HW_B_CX2341X: |
Hans Verkuil | c097b04 | 2006-03-30 19:57:28 -0300 | [diff] [blame] | 445 | probe = probe_bttv; |
Hans Verkuil | 51dab14 | 2006-03-25 08:10:12 -0300 | [diff] [blame] | 446 | break; |
Jean Delvare | 1684a984 | 2005-08-11 23:51:10 +0200 | [diff] [blame] | 447 | case I2C_HW_SAA7134: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | probe = probe_saa7134; |
| 449 | break; |
Mauro Carvalho Chehab | b296fc6 | 2005-11-08 21:38:37 -0800 | [diff] [blame] | 450 | case I2C_HW_B_EM28XX: |
| 451 | probe = probe_em28XX; |
Markus Rechberger | c365864 | 2005-11-08 21:37:21 -0800 | [diff] [blame] | 452 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | } |
| 454 | if (NULL == probe) |
| 455 | return 0; |
| 456 | |
| 457 | memset(&c,0,sizeof(c)); |
| 458 | c.adapter = adap; |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 459 | for (i = 0; -1 != probe[i]; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | c.addr = probe[i]; |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 461 | rc = i2c_master_recv(&c,&buf,0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | dprintk(1,"probe 0x%02x @ %s: %s\n", |
| 463 | probe[i], adap->name, |
Mauro Carvalho Chehab | d5e5265 | 2005-11-08 21:37:32 -0800 | [diff] [blame] | 464 | (0 == rc) ? "yes" : "no"); |
| 465 | if (0 == rc) { |
| 466 | ir_attach(adap,probe[i],0,0); |
| 467 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | } |
| 469 | } |
| 470 | return 0; |
| 471 | } |
| 472 | |
| 473 | /* ----------------------------------------------------------------------- */ |
| 474 | |
| 475 | MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller"); |
| 476 | MODULE_DESCRIPTION("input driver for i2c IR remote controls"); |
| 477 | MODULE_LICENSE("GPL"); |
| 478 | |
| 479 | static int __init ir_init(void) |
| 480 | { |
| 481 | return i2c_add_driver(&driver); |
| 482 | } |
| 483 | |
| 484 | static void __exit ir_fini(void) |
| 485 | { |
| 486 | i2c_del_driver(&driver); |
| 487 | } |
| 488 | |
| 489 | module_init(ir_init); |
| 490 | module_exit(ir_fini); |
| 491 | |
| 492 | /* |
| 493 | * Overrides for Emacs so that we follow Linus's tabbing style. |
| 494 | * --------------------------------------------------------------------------- |
| 495 | * Local variables: |
| 496 | * c-basic-offset: 8 |
| 497 | * End: |
| 498 | */ |