au0828-dvb.c 9.6 KB

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  1. /*
  2. * Driver for the Auvitek USB bridge
  3. *
  4. * Copyright (c) 2008 Steven Toth <stoth@hauppauge.com>
  5. *
  6. * This program is free software; you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License as published by
  8. * the Free Software Foundation; either version 2 of the License, or
  9. * (at your option) any later version.
  10. *
  11. * This program is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. *
  15. * GNU General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with this program; if not, write to the Free Software
  19. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20. */
  21. #include <linux/module.h>
  22. #include <linux/init.h>
  23. #include <linux/device.h>
  24. #include <linux/suspend.h>
  25. #include <media/v4l2-common.h>
  26. #include "au0828.h"
  27. #include "au8522.h"
  28. #include "xc5000.h"
  29. DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  30. unsigned int dvb_debug = 1;
  31. #define _dbg(level, fmt, arg...)\
  32. do { if (dvb_debug >= level)\
  33. printk(KERN_DEBUG "%s/0: " fmt, DRIVER_NAME, ## arg);\
  34. } while (0)
  35. static struct au8522_config hauppauge_hvr950q_config = {
  36. .demod_address = 0x8e >> 1,
  37. .status_mode = AU8522_DEMODLOCKING,
  38. };
  39. static struct xc5000_config hauppauge_hvr950q_tunerconfig = {
  40. .i2c_address = 0x61,
  41. .if_khz = 6000,
  42. .tuner_callback = au0828_tuner_callback
  43. };
  44. /*-------------------------------------------------------------------*/
  45. static void urb_completion(struct urb *purb)
  46. {
  47. u8 *ptr;
  48. struct au0828_dev *dev = purb->context;
  49. int ptype = usb_pipetype(purb->pipe);
  50. if (!dev)
  51. return;
  52. if (dev->urb_streaming == 0)
  53. return;
  54. if (ptype != PIPE_BULK) {
  55. printk(KERN_ERR "%s() Unsupported URB type %d\n", __FUNCTION__, ptype);
  56. return;
  57. }
  58. ptr = (u8 *)purb->transfer_buffer;
  59. /* Feed the transport payload into the kernel demux */
  60. dvb_dmx_swfilter_packets(&dev->dvb.demux, purb->transfer_buffer, purb->actual_length / 188);
  61. /* Clean the buffer before we requeue */
  62. memset(purb->transfer_buffer, 0, URB_BUFSIZE);
  63. /* Requeue URB */
  64. usb_submit_urb(purb, GFP_ATOMIC);
  65. }
  66. static int stop_urb_transfer(struct au0828_dev *dev)
  67. {
  68. int i;
  69. printk(KERN_INFO "%s()\n", __FUNCTION__);
  70. /* FIXME: Do we need to free the transfer_buffers? */
  71. for (i = 0; i < URB_COUNT; i++) {
  72. usb_kill_urb(dev->urbs[i]);
  73. kfree(dev->urbs[i]->transfer_buffer);
  74. usb_free_urb(dev->urbs[i]);
  75. }
  76. dev->urb_streaming = 0;
  77. return 0;
  78. }
  79. #define _AU0828_BULKPIPE 0x83
  80. #define _BULKPIPESIZE 0xe522
  81. static int start_urb_transfer(struct au0828_dev *dev)
  82. {
  83. struct urb *purb;
  84. int i, ret = -ENOMEM;
  85. unsigned int pipe = usb_rcvbulkpipe(dev->usbdev, _AU0828_BULKPIPE);
  86. int pipesize = usb_maxpacket(dev->usbdev, pipe, usb_pipeout(pipe));
  87. int packets = _BULKPIPESIZE / pipesize;
  88. int transfer_buflen = packets * pipesize;
  89. printk(KERN_INFO "%s() transfer_buflen = %d\n", __FUNCTION__, transfer_buflen);
  90. if (dev->urb_streaming) {
  91. printk("%s: iso xfer already running!\n", __FUNCTION__);
  92. return 0;
  93. }
  94. for (i = 0; i < URB_COUNT; i++) {
  95. dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
  96. if (!dev->urbs[i]) {
  97. goto err;
  98. }
  99. purb = dev->urbs[i];
  100. purb->transfer_buffer = kzalloc(URB_BUFSIZE, GFP_KERNEL);
  101. if (!purb->transfer_buffer) {
  102. usb_free_urb(purb);
  103. dev->urbs[i] = 0;
  104. goto err;
  105. }
  106. purb->status = -EINPROGRESS;
  107. usb_fill_bulk_urb(purb,
  108. dev->usbdev,
  109. usb_rcvbulkpipe(dev->usbdev, _AU0828_BULKPIPE),
  110. purb->transfer_buffer,
  111. URB_BUFSIZE,
  112. urb_completion,
  113. dev);
  114. }
  115. for (i = 0; i < URB_COUNT; i++) {
  116. ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
  117. if (ret != 0) {
  118. stop_urb_transfer(dev);
  119. printk("%s: failed urb submission, err = %d\n", __FUNCTION__, ret);
  120. return ret;
  121. }
  122. }
  123. dev->urb_streaming = 1;
  124. ret = 0;
  125. err:
  126. return ret;
  127. }
  128. static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
  129. {
  130. struct dvb_demux *demux = feed->demux;
  131. struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
  132. struct au0828_dvb *dvb = &dev->dvb;
  133. int ret = 0;
  134. printk(KERN_INFO "%s() pid = 0x%x index = %d\n", __FUNCTION__, feed->pid, feed->index);
  135. if (!demux->dmx.frontend)
  136. return -EINVAL;
  137. printk(KERN_INFO "%s() Preparing, feeding = %d\n", __FUNCTION__, dvb->feeding);
  138. if (dvb) {
  139. mutex_lock(&dvb->lock);
  140. if (dvb->feeding++ == 0) {
  141. printk(KERN_INFO "%s() Starting Transport DMA\n",
  142. __FUNCTION__);
  143. au0828_write(dev, 0x608, 0x90);
  144. au0828_write(dev, 0x609, 0x72);
  145. au0828_write(dev, 0x60a, 0x71);
  146. au0828_write(dev, 0x60b, 0x01);
  147. ret = start_urb_transfer(dev);
  148. }
  149. mutex_unlock(&dvb->lock);
  150. }
  151. return ret;
  152. }
  153. static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
  154. {
  155. struct dvb_demux *demux = feed->demux;
  156. struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
  157. struct au0828_dvb *dvb = &dev->dvb;
  158. int ret = 0;
  159. printk(KERN_INFO "%s() pid = 0x%x index = %d\n", __FUNCTION__, feed->pid, feed->index);
  160. if (dvb) {
  161. mutex_lock(&dvb->lock);
  162. if (--dvb->feeding == 0) {
  163. printk(KERN_INFO "%s() Stopping Transport DMA\n",
  164. __FUNCTION__);
  165. au0828_write(dev, 0x608, 0x00);
  166. au0828_write(dev, 0x609, 0x00);
  167. au0828_write(dev, 0x60a, 0x00);
  168. au0828_write(dev, 0x60b, 0x00);
  169. ret = stop_urb_transfer(dev);
  170. }
  171. mutex_unlock(&dvb->lock);
  172. }
  173. return ret;
  174. }
  175. int dvb_register(struct au0828_dev *dev)
  176. {
  177. struct au0828_dvb *dvb = &dev->dvb;
  178. int result;
  179. /* register adapter */
  180. result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
  181. &dev->usbdev->dev, adapter_nr);
  182. if (result < 0) {
  183. printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
  184. DRIVER_NAME, result);
  185. goto fail_adapter;
  186. }
  187. dvb->adapter.priv = dev;
  188. /* register frontend */
  189. result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
  190. if (result < 0) {
  191. printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
  192. DRIVER_NAME, result);
  193. goto fail_frontend;
  194. }
  195. /* register demux stuff */
  196. dvb->demux.dmx.capabilities =
  197. DMX_TS_FILTERING | DMX_SECTION_FILTERING |
  198. DMX_MEMORY_BASED_FILTERING;
  199. dvb->demux.priv = dev;
  200. dvb->demux.filternum = 256;
  201. dvb->demux.feednum = 256;
  202. dvb->demux.start_feed = au0828_dvb_start_feed;
  203. dvb->demux.stop_feed = au0828_dvb_stop_feed;
  204. result = dvb_dmx_init(&dvb->demux);
  205. if (result < 0) {
  206. printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
  207. DRIVER_NAME, result);
  208. goto fail_dmx;
  209. }
  210. dvb->dmxdev.filternum = 256;
  211. dvb->dmxdev.demux = &dvb->demux.dmx;
  212. dvb->dmxdev.capabilities = 0;
  213. result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
  214. if (result < 0) {
  215. printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
  216. DRIVER_NAME, result);
  217. goto fail_dmxdev;
  218. }
  219. dvb->fe_hw.source = DMX_FRONTEND_0;
  220. result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
  221. if (result < 0) {
  222. printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
  223. DRIVER_NAME, result);
  224. goto fail_fe_hw;
  225. }
  226. dvb->fe_mem.source = DMX_MEMORY_FE;
  227. result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
  228. if (result < 0) {
  229. printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
  230. DRIVER_NAME, result);
  231. goto fail_fe_mem;
  232. }
  233. result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
  234. if (result < 0) {
  235. printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
  236. DRIVER_NAME, result);
  237. goto fail_fe_conn;
  238. }
  239. /* register network adapter */
  240. dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
  241. return 0;
  242. fail_fe_conn:
  243. dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
  244. fail_fe_mem:
  245. dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
  246. fail_fe_hw:
  247. dvb_dmxdev_release(&dvb->dmxdev);
  248. fail_dmxdev:
  249. dvb_dmx_release(&dvb->demux);
  250. fail_dmx:
  251. dvb_unregister_frontend(dvb->frontend);
  252. fail_frontend:
  253. dvb_frontend_detach(dvb->frontend);
  254. dvb_unregister_adapter(&dvb->adapter);
  255. fail_adapter:
  256. return result;
  257. }
  258. void au0828_dvb_unregister(struct au0828_dev *dev)
  259. {
  260. struct au0828_dvb *dvb = &dev->dvb;
  261. if(dvb->frontend == NULL)
  262. return;
  263. dvb_net_release(&dvb->net);
  264. dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
  265. dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
  266. dvb_dmxdev_release(&dvb->dmxdev);
  267. dvb_dmx_release(&dvb->demux);
  268. dvb_unregister_frontend(dvb->frontend);
  269. dvb_frontend_detach(dvb->frontend);
  270. dvb_unregister_adapter(&dvb->adapter);
  271. }
  272. /* All the DVB attach calls go here, this function get's modified
  273. * for each new card. No other function in this file needs
  274. * to change.
  275. */
  276. int au0828_dvb_register(struct au0828_dev *dev)
  277. {
  278. struct au0828_dvb *dvb = &dev->dvb;
  279. int ret;
  280. /* init frontend */
  281. switch (dev->board) {
  282. case AU0828_BOARD_HAUPPAUGE_HVR850:
  283. case AU0828_BOARD_HAUPPAUGE_HVR950Q:
  284. case AU0828_BOARD_DVICO_FUSIONHDTV7:
  285. dvb->frontend = dvb_attach(au8522_attach,
  286. &hauppauge_hvr950q_config,
  287. &dev->i2c_adap);
  288. if (dvb->frontend != NULL) {
  289. hauppauge_hvr950q_tunerconfig.priv = dev;
  290. dvb_attach(xc5000_attach, dvb->frontend,
  291. &dev->i2c_adap,
  292. &hauppauge_hvr950q_tunerconfig);
  293. }
  294. break;
  295. default:
  296. printk("The frontend of your DVB/ATSC card isn't supported yet\n");
  297. break;
  298. }
  299. if (NULL == dvb->frontend) {
  300. printk("Frontend initialization failed\n");
  301. return -1;
  302. }
  303. /* Put the analog decoder in standby to keep it quiet */
  304. au0828_call_i2c_clients(dev, TUNER_SET_STANDBY, NULL);
  305. if (dvb->frontend->ops.analog_ops.standby)
  306. dvb->frontend->ops.analog_ops.standby(dvb->frontend);
  307. /* register everything */
  308. ret = dvb_register(dev);
  309. if (ret < 0) {
  310. if (dvb->frontend->ops.release)
  311. dvb->frontend->ops.release(dvb->frontend);
  312. return ret;
  313. }
  314. return 0;
  315. }