Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 1 | /* |
| 2 | DVB device driver for em28xx |
| 3 | |
| 4 | (c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org> |
| 5 | |
Devin Heitmueller | bdfbf95 | 2008-04-17 21:38:27 -0300 | [diff] [blame] | 6 | (c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com> |
| 7 | - Fixes for the driver to properly work with HVR-950 |
| 8 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 9 | (c) 2008 Aidan Thornton <makosoft@googlemail.com> |
| 10 | |
| 11 | Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by: |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 12 | (c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au> |
| 13 | (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] |
| 14 | |
| 15 | This program is free software; you can redistribute it and/or modify |
| 16 | it under the terms of the GNU General Public License as published by |
| 17 | the Free Software Foundation; either version 2 of the License. |
| 18 | */ |
| 19 | |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/usb.h> |
| 22 | |
| 23 | #include "em28xx.h" |
| 24 | #include <media/v4l2-common.h> |
| 25 | #include <media/videobuf-vmalloc.h> |
| 26 | |
| 27 | #include "lgdt330x.h" |
Aidan Thornton | 7e6388a | 2008-04-17 21:40:03 -0300 | [diff] [blame] | 28 | #include "zl10353.h" |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 29 | |
| 30 | MODULE_DESCRIPTION("driver for em28xx based DVB cards"); |
| 31 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>"); |
| 32 | MODULE_LICENSE("GPL"); |
| 33 | |
| 34 | static unsigned int debug; |
| 35 | module_param(debug, int, 0644); |
| 36 | MODULE_PARM_DESC(debug, "enable debug messages [dvb]"); |
| 37 | |
| 38 | DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); |
| 39 | |
| 40 | #define dprintk(level, fmt, arg...) do { \ |
| 41 | if (debug >= level) \ |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 42 | printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \ |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 43 | } while (0) |
| 44 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 45 | #define EM28XX_DVB_NUM_BUFS 5 |
| 46 | #define EM28XX_DVB_MAX_PACKETSIZE 564 |
| 47 | #define EM28XX_DVB_MAX_PACKETS 64 |
| 48 | |
| 49 | struct em28xx_dvb { |
| 50 | struct dvb_frontend *frontend; |
| 51 | |
| 52 | /* feed count management */ |
| 53 | struct mutex lock; |
| 54 | int nfeeds; |
| 55 | |
| 56 | /* general boilerplate stuff */ |
| 57 | struct dvb_adapter adapter; |
| 58 | struct dvb_demux demux; |
| 59 | struct dmxdev dmxdev; |
| 60 | struct dmx_frontend fe_hw; |
| 61 | struct dmx_frontend fe_mem; |
| 62 | struct dvb_net net; |
| 63 | }; |
| 64 | |
| 65 | |
| 66 | static inline void print_err_status(struct em28xx *dev, |
| 67 | int packet, int status) |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 68 | { |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 69 | char *errmsg = "Unknown"; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 70 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 71 | switch (status) { |
| 72 | case -ENOENT: |
| 73 | errmsg = "unlinked synchronuously"; |
| 74 | break; |
| 75 | case -ECONNRESET: |
| 76 | errmsg = "unlinked asynchronuously"; |
| 77 | break; |
| 78 | case -ENOSR: |
| 79 | errmsg = "Buffer error (overrun)"; |
| 80 | break; |
| 81 | case -EPIPE: |
| 82 | errmsg = "Stalled (device not responding)"; |
| 83 | break; |
| 84 | case -EOVERFLOW: |
| 85 | errmsg = "Babble (bad cable?)"; |
| 86 | break; |
| 87 | case -EPROTO: |
| 88 | errmsg = "Bit-stuff error (bad cable?)"; |
| 89 | break; |
| 90 | case -EILSEQ: |
| 91 | errmsg = "CRC/Timeout (could be anything)"; |
| 92 | break; |
| 93 | case -ETIME: |
| 94 | errmsg = "Device does not respond"; |
| 95 | break; |
| 96 | } |
| 97 | if (packet < 0) { |
| 98 | dprintk(1, "URB status %d [%s].\n", status, errmsg); |
| 99 | } else { |
| 100 | dprintk(1, "URB packet %d, status %d [%s].\n", packet, status, errmsg); |
| 101 | } |
| 102 | } |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 103 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 104 | static inline int dvb_isoc_copy(struct em28xx *dev, struct urb *urb) |
| 105 | { |
| 106 | int i; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 107 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 108 | if (!dev) |
| 109 | return 0; |
| 110 | |
| 111 | if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED)) |
| 112 | return 0; |
| 113 | |
| 114 | if (urb->status < 0) { |
| 115 | print_err_status(dev, -1, urb->status); |
| 116 | if (urb->status == -ENOENT) |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | for (i = 0; i < urb->number_of_packets; i++) { |
| 121 | int status = urb->iso_frame_desc[i].status; |
| 122 | |
| 123 | if (status < 0) { |
| 124 | print_err_status(dev, i, status); |
| 125 | if (urb->iso_frame_desc[i].status != -EPROTO) |
| 126 | continue; |
| 127 | } |
| 128 | |
| 129 | dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer + |
| 130 | urb->iso_frame_desc[i].offset, |
| 131 | urb->iso_frame_desc[i].actual_length); |
| 132 | } |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 133 | |
| 134 | return 0; |
| 135 | } |
| 136 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 137 | static int start_streaming(struct em28xx_dvb* dvb) { |
| 138 | struct em28xx *dev = dvb->adapter.priv; |
| 139 | |
| 140 | usb_set_interface(dev->udev, 0, 1); |
| 141 | dev->em28xx_write_regs_req(dev,0x00,0x48,"\x00",1); |
| 142 | |
| 143 | return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS, |
| 144 | EM28XX_DVB_NUM_BUFS, EM28XX_DVB_MAX_PACKETSIZE, |
| 145 | dvb_isoc_copy, EM28XX_DIGITAL_CAPTURE); |
| 146 | } |
| 147 | |
| 148 | static int stop_streaming(struct em28xx_dvb* dvb) { |
| 149 | struct em28xx *dev = dvb->adapter.priv; |
| 150 | |
| 151 | em28xx_uninit_isoc(dev); |
| 152 | return 0; |
| 153 | } |
| 154 | |
| 155 | static int start_feed(struct dvb_demux_feed *feed) |
| 156 | { |
| 157 | struct dvb_demux *demux = feed->demux; |
| 158 | struct em28xx_dvb *dvb = demux->priv; |
| 159 | int rc, ret; |
| 160 | |
| 161 | if (!demux->dmx.frontend) |
| 162 | return -EINVAL; |
| 163 | |
| 164 | mutex_lock(&dvb->lock); |
| 165 | dvb->nfeeds++; |
| 166 | rc = dvb->nfeeds; |
| 167 | |
| 168 | if (dvb->nfeeds == 1) { |
| 169 | ret = start_streaming(dvb); |
| 170 | if(ret < 0) rc = ret; |
| 171 | } |
| 172 | |
| 173 | mutex_unlock(&dvb->lock); |
| 174 | return rc; |
| 175 | } |
| 176 | |
| 177 | static int stop_feed(struct dvb_demux_feed *feed) |
| 178 | { |
| 179 | struct dvb_demux *demux = feed->demux; |
| 180 | struct em28xx_dvb *dvb = demux->priv; |
| 181 | int err = 0; |
| 182 | |
| 183 | mutex_lock(&dvb->lock); |
| 184 | dvb->nfeeds--; |
| 185 | if (0 == dvb->nfeeds) { |
| 186 | err = stop_streaming(dvb); |
| 187 | } |
| 188 | mutex_unlock(&dvb->lock); |
| 189 | return err; |
| 190 | } |
| 191 | |
| 192 | |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 193 | /* ------------------------------------------------------------------ */ |
| 194 | |
Mauro Carvalho Chehab | 227ad4a | 2008-04-17 21:37:40 -0300 | [diff] [blame] | 195 | static struct lgdt330x_config em2880_lgdt3303_dev = { |
| 196 | .demod_address = 0x0e, |
| 197 | .demod_chip = LGDT3303, |
| 198 | }; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 199 | |
Aidan Thornton | 7e6388a | 2008-04-17 21:40:03 -0300 | [diff] [blame] | 200 | static struct zl10353_config em28xx_zl10353_with_xc3028 = { |
| 201 | .demod_address = (0x1e >> 1), |
| 202 | .no_tuner = 1, |
| 203 | .parallel_ts = 1, |
| 204 | .if2 = 45600, |
| 205 | }; |
| 206 | |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 207 | /* ------------------------------------------------------------------ */ |
| 208 | |
| 209 | static int attach_xc3028(u8 addr, struct em28xx *dev) |
| 210 | { |
| 211 | struct dvb_frontend *fe; |
| 212 | struct xc2028_ctrl ctl; |
Mauro Carvalho Chehab | 3ca9c09 | 2008-04-17 21:37:53 -0300 | [diff] [blame] | 213 | struct xc2028_config cfg; |
| 214 | |
| 215 | memset (&cfg, 0, sizeof(cfg)); |
| 216 | cfg.i2c_adap = &dev->i2c_adap; |
| 217 | cfg.i2c_addr = addr; |
| 218 | cfg.ctrl = &ctl; |
| 219 | cfg.callback = em28xx_tuner_callback; |
| 220 | |
| 221 | em28xx_setup_xc3028(dev, &ctl); |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 222 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 223 | if (!dev->dvb->frontend) { |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 224 | printk(KERN_ERR "%s/2: dvb frontend not attached. " |
| 225 | "Can't attach xc3028\n", |
| 226 | dev->name); |
| 227 | return -EINVAL; |
| 228 | } |
| 229 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 230 | fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg); |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 231 | if (!fe) { |
| 232 | printk(KERN_ERR "%s/2: xc3028 attach failed\n", |
| 233 | dev->name); |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 234 | dvb_frontend_detach(dev->dvb->frontend); |
| 235 | dvb_unregister_frontend(dev->dvb->frontend); |
| 236 | dev->dvb->frontend = NULL; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 237 | return -EINVAL; |
| 238 | } |
| 239 | |
| 240 | printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name); |
| 241 | |
| 242 | return 0; |
| 243 | } |
| 244 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 245 | /* ------------------------------------------------------------------ */ |
| 246 | |
| 247 | int register_dvb(struct em28xx_dvb *dvb, |
| 248 | struct module *module, |
| 249 | struct em28xx *dev, |
| 250 | struct device *device) |
| 251 | { |
| 252 | int result; |
| 253 | |
| 254 | mutex_init(&dvb->lock); |
| 255 | |
| 256 | /* register adapter */ |
| 257 | result = dvb_register_adapter(&dvb->adapter, dev->name, module, device, |
| 258 | adapter_nr); |
| 259 | if (result < 0) { |
| 260 | printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n", |
| 261 | dev->name, result); |
| 262 | goto fail_adapter; |
| 263 | } |
| 264 | dvb->adapter.priv = dev; |
| 265 | |
| 266 | /* register frontend */ |
| 267 | result = dvb_register_frontend(&dvb->adapter, dvb->frontend); |
| 268 | if (result < 0) { |
| 269 | printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n", |
| 270 | dev->name, result); |
| 271 | goto fail_frontend; |
| 272 | } |
| 273 | |
| 274 | /* register demux stuff */ |
| 275 | dvb->demux.dmx.capabilities = |
| 276 | DMX_TS_FILTERING | DMX_SECTION_FILTERING | |
| 277 | DMX_MEMORY_BASED_FILTERING; |
| 278 | dvb->demux.priv = dvb; |
| 279 | dvb->demux.filternum = 256; |
| 280 | dvb->demux.feednum = 256; |
| 281 | dvb->demux.start_feed = start_feed; |
| 282 | dvb->demux.stop_feed = stop_feed; |
| 283 | result = dvb_dmx_init(&dvb->demux); |
| 284 | if (result < 0) { |
| 285 | printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n", |
| 286 | dev->name, result); |
| 287 | goto fail_dmx; |
| 288 | } |
| 289 | |
| 290 | dvb->dmxdev.filternum = 256; |
| 291 | dvb->dmxdev.demux = &dvb->demux.dmx; |
| 292 | dvb->dmxdev.capabilities = 0; |
| 293 | result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter); |
| 294 | if (result < 0) { |
| 295 | printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n", |
| 296 | dev->name, result); |
| 297 | goto fail_dmxdev; |
| 298 | } |
| 299 | |
| 300 | dvb->fe_hw.source = DMX_FRONTEND_0; |
| 301 | result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw); |
| 302 | if (result < 0) { |
| 303 | printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n", |
| 304 | dev->name, result); |
| 305 | goto fail_fe_hw; |
| 306 | } |
| 307 | |
| 308 | dvb->fe_mem.source = DMX_MEMORY_FE; |
| 309 | result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem); |
| 310 | if (result < 0) { |
| 311 | printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n", |
| 312 | dev->name, result); |
| 313 | goto fail_fe_mem; |
| 314 | } |
| 315 | |
| 316 | result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw); |
| 317 | if (result < 0) { |
| 318 | printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n", |
| 319 | dev->name, result); |
| 320 | goto fail_fe_conn; |
| 321 | } |
| 322 | |
| 323 | /* register network adapter */ |
| 324 | dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx); |
| 325 | return 0; |
| 326 | |
| 327 | fail_fe_conn: |
| 328 | dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); |
| 329 | fail_fe_mem: |
| 330 | dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); |
| 331 | fail_fe_hw: |
| 332 | dvb_dmxdev_release(&dvb->dmxdev); |
| 333 | fail_dmxdev: |
| 334 | dvb_dmx_release(&dvb->demux); |
| 335 | fail_dmx: |
| 336 | dvb_unregister_frontend(dvb->frontend); |
| 337 | fail_frontend: |
| 338 | dvb_frontend_detach(dvb->frontend); |
| 339 | dvb_unregister_adapter(&dvb->adapter); |
| 340 | fail_adapter: |
| 341 | return result; |
| 342 | } |
| 343 | |
| 344 | static void unregister_dvb(struct em28xx_dvb *dvb) |
| 345 | { |
| 346 | dvb_net_release(&dvb->net); |
| 347 | dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); |
| 348 | dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw); |
| 349 | dvb_dmxdev_release(&dvb->dmxdev); |
| 350 | dvb_dmx_release(&dvb->demux); |
| 351 | dvb_unregister_frontend(dvb->frontend); |
| 352 | dvb_frontend_detach(dvb->frontend); |
| 353 | dvb_unregister_adapter(&dvb->adapter); |
| 354 | } |
| 355 | |
| 356 | |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 357 | static int dvb_init(struct em28xx *dev) |
| 358 | { |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 359 | int result = 0; |
| 360 | struct em28xx_dvb *dvb; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 361 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 362 | dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL); |
| 363 | if(dvb == NULL) { |
| 364 | printk("em28xx_dvb: memory allocation failed\n"); |
| 365 | return -ENOMEM; |
| 366 | } |
| 367 | dev->dvb = dvb; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 368 | |
| 369 | /* init frontend */ |
| 370 | switch (dev->model) { |
Mauro Carvalho Chehab | 227ad4a | 2008-04-17 21:37:40 -0300 | [diff] [blame] | 371 | case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950: |
| 372 | /* Enable lgdt330x */ |
Devin Heitmueller | bdfbf95 | 2008-04-17 21:38:27 -0300 | [diff] [blame] | 373 | dev->mode = EM28XX_DIGITAL_MODE; |
Mauro Carvalho Chehab | 227ad4a | 2008-04-17 21:37:40 -0300 | [diff] [blame] | 374 | em28xx_tuner_callback(dev, XC2028_TUNER_RESET, 0); |
| 375 | |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 376 | dvb->frontend = dvb_attach(lgdt330x_attach, |
| 377 | &em2880_lgdt3303_dev, |
| 378 | &dev->i2c_adap); |
| 379 | if (attach_xc3028(0x61, dev) < 0) { |
| 380 | result = -EINVAL; |
| 381 | goto out_free; |
| 382 | } |
Mauro Carvalho Chehab | 227ad4a | 2008-04-17 21:37:40 -0300 | [diff] [blame] | 383 | break; |
Aidan Thornton | 7e6388a | 2008-04-17 21:40:03 -0300 | [diff] [blame] | 384 | case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900: |
| 385 | /* Enable zl10353 */ |
| 386 | dev->mode = EM28XX_DIGITAL_MODE; |
| 387 | em28xx_tuner_callback(dev, XC2028_TUNER_RESET, 0); |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 388 | dvb->frontend = dvb_attach(zl10353_attach, |
| 389 | &em28xx_zl10353_with_xc3028, |
| 390 | &dev->i2c_adap); |
| 391 | if (attach_xc3028(0x61, dev) < 0) { |
| 392 | result = -EINVAL; |
| 393 | goto out_free; |
| 394 | } |
Aidan Thornton | 7e6388a | 2008-04-17 21:40:03 -0300 | [diff] [blame] | 395 | break; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 396 | default: |
| 397 | printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card" |
| 398 | " isn't supported yet\n", |
| 399 | dev->name); |
| 400 | break; |
| 401 | } |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 402 | if (NULL == dvb->frontend) { |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 403 | printk(KERN_ERR |
| 404 | "%s/2: frontend initialization failed\n", |
| 405 | dev->name); |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 406 | result = -EINVAL; |
| 407 | goto out_free; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | /* register everything */ |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 411 | result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev); |
| 412 | |
| 413 | if (result < 0) { |
| 414 | goto out_free; |
| 415 | } |
| 416 | |
Mauro Carvalho Chehab | 102a0b0 | 2008-04-17 21:40:45 -0300 | [diff] [blame^] | 417 | printk(KERN_INFO "Successfully loaded em28xx-dvb\n"); |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 418 | return 0; |
| 419 | |
| 420 | out_free: |
| 421 | kfree(dvb); |
| 422 | dev->dvb = NULL; |
| 423 | return result; |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 424 | } |
| 425 | |
| 426 | static int dvb_fini(struct em28xx *dev) |
| 427 | { |
Aidan Thornton | 3421b77 | 2008-04-17 21:40:36 -0300 | [diff] [blame] | 428 | if (dev->dvb) { |
| 429 | unregister_dvb(dev->dvb); |
| 430 | dev->dvb = NULL; |
| 431 | } |
Mauro Carvalho Chehab | 3aefb79 | 2008-04-17 21:36:41 -0300 | [diff] [blame] | 432 | |
| 433 | return 0; |
| 434 | } |
| 435 | |
| 436 | static struct em28xx_ops dvb_ops = { |
| 437 | .id = EM28XX_DVB, |
| 438 | .name = "Em28xx dvb Extension", |
| 439 | .init = dvb_init, |
| 440 | .fini = dvb_fini, |
| 441 | }; |
| 442 | |
| 443 | static int __init em28xx_dvb_register(void) |
| 444 | { |
| 445 | return em28xx_register_extension(&dvb_ops); |
| 446 | } |
| 447 | |
| 448 | static void __exit em28xx_dvb_unregister(void) |
| 449 | { |
| 450 | em28xx_unregister_extension(&dvb_ops); |
| 451 | } |
| 452 | |
| 453 | module_init(em28xx_dvb_register); |
| 454 | module_exit(em28xx_dvb_unregister); |