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Linux/drivers/media/usb/dvb-usb/gp8psk.c

  1 /* DVB USB compliant Linux driver for the
  2  *  - GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module
  3  *
  4  * Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com)
  5  * Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com)
  6  *
  7  * Thanks to GENPIX for the sample code used to implement this module.
  8  *
  9  * This module is based off the vp7045 and vp702x modules
 10  *
 11  *      This program is free software; you can redistribute it and/or modify it
 12  *      under the terms of the GNU General Public License as published by the Free
 13  *      Software Foundation, version 2.
 14  *
 15  * see Documentation/dvb/README.dvb-usb for more information
 16  */
 17 #include "gp8psk.h"
 18 #include "gp8psk-fe.h"
 19 
 20 /* debug */
 21 static char bcm4500_firmware[] = "dvb-usb-gp8psk-02.fw";
 22 int dvb_usb_gp8psk_debug;
 23 module_param_named(debug,dvb_usb_gp8psk_debug, int, 0644);
 24 MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,rc=4 (or-able))." DVB_USB_DEBUG_STATUS);
 25 
 26 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 27 
 28 struct gp8psk_state {
 29         unsigned char data[80];
 30 };
 31 
 32 static int gp8psk_usb_in_op(struct dvb_usb_device *d, u8 req, u16 value,
 33                             u16 index, u8 *b, int blen)
 34 {
 35         struct gp8psk_state *st = d->priv;
 36         int ret = 0,try = 0;
 37 
 38         if (blen > sizeof(st->data))
 39                 return -EIO;
 40 
 41         if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
 42                 return ret;
 43 
 44         while (ret >= 0 && ret != blen && try < 3) {
 45                 ret = usb_control_msg(d->udev,
 46                         usb_rcvctrlpipe(d->udev,0),
 47                         req,
 48                         USB_TYPE_VENDOR | USB_DIR_IN,
 49                         value, index, st->data, blen,
 50                         2000);
 51                 deb_info("reading number %d (ret: %d)\n",try,ret);
 52                 try++;
 53         }
 54 
 55         if (ret < 0 || ret != blen) {
 56                 warn("usb in %d operation failed.", req);
 57                 ret = -EIO;
 58         } else {
 59                 ret = 0;
 60                 memcpy(b, st->data, blen);
 61         }
 62 
 63         deb_xfer("in: req. %x, val: %x, ind: %x, buffer: ",req,value,index);
 64         debug_dump(b,blen,deb_xfer);
 65 
 66         mutex_unlock(&d->usb_mutex);
 67 
 68         return ret;
 69 }
 70 
 71 static int gp8psk_usb_out_op(struct dvb_usb_device *d, u8 req, u16 value,
 72                              u16 index, u8 *b, int blen)
 73 {
 74         struct gp8psk_state *st = d->priv;
 75         int ret;
 76 
 77         deb_xfer("out: req. %x, val: %x, ind: %x, buffer: ",req,value,index);
 78         debug_dump(b,blen,deb_xfer);
 79 
 80         if (blen > sizeof(st->data))
 81                 return -EIO;
 82 
 83         if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
 84                 return ret;
 85 
 86         memcpy(st->data, b, blen);
 87         if (usb_control_msg(d->udev,
 88                         usb_sndctrlpipe(d->udev,0),
 89                         req,
 90                         USB_TYPE_VENDOR | USB_DIR_OUT,
 91                         value, index, st->data, blen,
 92                         2000) != blen) {
 93                 warn("usb out operation failed.");
 94                 ret = -EIO;
 95         } else
 96                 ret = 0;
 97         mutex_unlock(&d->usb_mutex);
 98 
 99         return ret;
100 }
101 
102 
103 static int gp8psk_get_fw_version(struct dvb_usb_device *d, u8 *fw_vers)
104 {
105         return gp8psk_usb_in_op(d, GET_FW_VERS, 0, 0, fw_vers, 6);
106 }
107 
108 static int gp8psk_get_fpga_version(struct dvb_usb_device *d, u8 *fpga_vers)
109 {
110         return gp8psk_usb_in_op(d, GET_FPGA_VERS, 0, 0, fpga_vers, 1);
111 }
112 
113 static void gp8psk_info(struct dvb_usb_device *d)
114 {
115         u8 fpga_vers, fw_vers[6];
116 
117         if (!gp8psk_get_fw_version(d, fw_vers))
118                 info("FW Version = %i.%02i.%i (0x%x)  Build %4i/%02i/%02i",
119                 fw_vers[2], fw_vers[1], fw_vers[0], GP8PSK_FW_VERS(fw_vers),
120                 2000 + fw_vers[5], fw_vers[4], fw_vers[3]);
121         else
122                 info("failed to get FW version");
123 
124         if (!gp8psk_get_fpga_version(d, &fpga_vers))
125                 info("FPGA Version = %i", fpga_vers);
126         else
127                 info("failed to get FPGA version");
128 }
129 
130 static int gp8psk_load_bcm4500fw(struct dvb_usb_device *d)
131 {
132         int ret;
133         const struct firmware *fw = NULL;
134         const u8 *ptr;
135         u8 *buf;
136         if ((ret = request_firmware(&fw, bcm4500_firmware,
137                                         &d->udev->dev)) != 0) {
138                 err("did not find the bcm4500 firmware file. (%s) Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
139                         bcm4500_firmware,ret);
140                 return ret;
141         }
142 
143         ret = -EINVAL;
144 
145         if (gp8psk_usb_out_op(d, LOAD_BCM4500,1,0,NULL, 0))
146                 goto out_rel_fw;
147 
148         info("downloading bcm4500 firmware from file '%s'",bcm4500_firmware);
149 
150         ptr = fw->data;
151         buf = kmalloc(64, GFP_KERNEL | GFP_DMA);
152         if (!buf) {
153                 ret = -ENOMEM;
154                 goto out_rel_fw;
155         }
156 
157         while (ptr[0] != 0xff) {
158                 u16 buflen = ptr[0] + 4;
159                 if (ptr + buflen >= fw->data + fw->size) {
160                         err("failed to load bcm4500 firmware.");
161                         goto out_free;
162                 }
163                 if (buflen > 64) {
164                         err("firmare chunk size bigger than 64 bytes.");
165                         goto out_free;
166                 }
167 
168                 memcpy(buf, ptr, buflen);
169                 if (dvb_usb_generic_write(d, buf, buflen)) {
170                         err("failed to load bcm4500 firmware.");
171                         goto out_free;
172                 }
173                 ptr += buflen;
174         }
175 
176         ret = 0;
177 
178 out_free:
179         kfree(buf);
180 out_rel_fw:
181         release_firmware(fw);
182 
183         return ret;
184 }
185 
186 static int gp8psk_power_ctrl(struct dvb_usb_device *d, int onoff)
187 {
188         u8 status, buf;
189         int gp_product_id = le16_to_cpu(d->udev->descriptor.idProduct);
190 
191         if (onoff) {
192                 gp8psk_usb_in_op(d, GET_8PSK_CONFIG,0,0,&status,1);
193                 if (! (status & bm8pskStarted)) {  /* started */
194                         if(gp_product_id == USB_PID_GENPIX_SKYWALKER_CW3K)
195                                 gp8psk_usb_out_op(d, CW3K_INIT, 1, 0, NULL, 0);
196                         if (gp8psk_usb_in_op(d, BOOT_8PSK, 1, 0, &buf, 1))
197                                 return -EINVAL;
198                         gp8psk_info(d);
199                 }
200 
201                 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
202                         if (! (status & bm8pskFW_Loaded)) /* BCM4500 firmware loaded */
203                                 if(gp8psk_load_bcm4500fw(d))
204                                         return -EINVAL;
205 
206                 if (! (status & bmIntersilOn)) /* LNB Power */
207                         if (gp8psk_usb_in_op(d, START_INTERSIL, 1, 0,
208                                         &buf, 1))
209                                 return -EINVAL;
210 
211                 /* Set DVB mode to 1 */
212                 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
213                         if (gp8psk_usb_out_op(d, SET_DVB_MODE, 1, 0, NULL, 0))
214                                 return -EINVAL;
215                 /* Abort possible TS (if previous tune crashed) */
216                 if (gp8psk_usb_out_op(d, ARM_TRANSFER, 0, 0, NULL, 0))
217                         return -EINVAL;
218         } else {
219                 /* Turn off LNB power */
220                 if (gp8psk_usb_in_op(d, START_INTERSIL, 0, 0, &buf, 1))
221                         return -EINVAL;
222                 /* Turn off 8psk power */
223                 if (gp8psk_usb_in_op(d, BOOT_8PSK, 0, 0, &buf, 1))
224                         return -EINVAL;
225                 if(gp_product_id == USB_PID_GENPIX_SKYWALKER_CW3K)
226                         gp8psk_usb_out_op(d, CW3K_INIT, 0, 0, NULL, 0);
227         }
228         return 0;
229 }
230 
231 static int gp8psk_bcm4500_reload(struct dvb_usb_device *d)
232 {
233         u8 buf;
234         int gp_product_id = le16_to_cpu(d->udev->descriptor.idProduct);
235 
236         deb_xfer("reloading firmware\n");
237 
238         /* Turn off 8psk power */
239         if (gp8psk_usb_in_op(d, BOOT_8PSK, 0, 0, &buf, 1))
240                 return -EINVAL;
241         /* Turn On 8psk power */
242         if (gp8psk_usb_in_op(d, BOOT_8PSK, 1, 0, &buf, 1))
243                 return -EINVAL;
244         /* load BCM4500 firmware */
245         if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
246                 if (gp8psk_load_bcm4500fw(d))
247                         return -EINVAL;
248         return 0;
249 }
250 
251 static int gp8psk_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
252 {
253         return gp8psk_usb_out_op(adap->dev, ARM_TRANSFER, onoff, 0 , NULL, 0);
254 }
255 
256 /* Callbacks for gp8psk-fe.c */
257 
258 static int gp8psk_fe_in(void *priv, u8 req, u16 value,
259                             u16 index, u8 *b, int blen)
260 {
261         struct dvb_usb_device *d = priv;
262 
263         return gp8psk_usb_in_op(d, req, value, index, b, blen);
264 }
265 
266 static int gp8psk_fe_out(void *priv, u8 req, u16 value,
267                             u16 index, u8 *b, int blen)
268 {
269         struct dvb_usb_device *d = priv;
270 
271         return gp8psk_usb_out_op(d, req, value, index, b, blen);
272 }
273 
274 static int gp8psk_fe_reload(void *priv)
275 {
276         struct dvb_usb_device *d = priv;
277 
278         return gp8psk_bcm4500_reload(d);
279 }
280 
281 const struct gp8psk_fe_ops gp8psk_fe_ops = {
282         .in = gp8psk_fe_in,
283         .out = gp8psk_fe_out,
284         .reload = gp8psk_fe_reload,
285 };
286 
287 static int gp8psk_frontend_attach(struct dvb_usb_adapter *adap)
288 {
289         struct dvb_usb_device *d = adap->dev;
290         int id = le16_to_cpu(d->udev->descriptor.idProduct);
291         int is_rev1;
292 
293         is_rev1 = (id == USB_PID_GENPIX_8PSK_REV_1_WARM) ? true : false;
294 
295         adap->fe_adap[0].fe = dvb_attach(gp8psk_fe_attach,
296                                          &gp8psk_fe_ops, d, is_rev1);
297         return 0;
298 }
299 
300 static struct dvb_usb_device_properties gp8psk_properties;
301 
302 static int gp8psk_usb_probe(struct usb_interface *intf,
303                 const struct usb_device_id *id)
304 {
305         int ret;
306         struct usb_device *udev = interface_to_usbdev(intf);
307         ret = dvb_usb_device_init(intf, &gp8psk_properties,
308                                   THIS_MODULE, NULL, adapter_nr);
309         if (ret == 0) {
310                 info("found Genpix USB device pID = %x (hex)",
311                         le16_to_cpu(udev->descriptor.idProduct));
312         }
313         return ret;
314 }
315 
316 static struct usb_device_id gp8psk_usb_table [] = {
317             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_1_COLD) },
318             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_1_WARM) },
319             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_2) },
320             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_1) },
321             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_2) },
322 /*          { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_CW3K) }, */
323             { 0 },
324 };
325 MODULE_DEVICE_TABLE(usb, gp8psk_usb_table);
326 
327 static struct dvb_usb_device_properties gp8psk_properties = {
328         .usb_ctrl = CYPRESS_FX2,
329         .firmware = "dvb-usb-gp8psk-01.fw",
330 
331         .size_of_priv = sizeof(struct gp8psk_state),
332 
333         .num_adapters = 1,
334         .adapter = {
335                 {
336                 .num_frontends = 1,
337                 .fe = {{
338                         .streaming_ctrl   = gp8psk_streaming_ctrl,
339                         .frontend_attach  = gp8psk_frontend_attach,
340                         /* parameter for the MPEG2-data transfer */
341                         .stream = {
342                                 .type = USB_BULK,
343                                 .count = 7,
344                                 .endpoint = 0x82,
345                                 .u = {
346                                         .bulk = {
347                                                 .buffersize = 8192,
348                                         }
349                                 }
350                         },
351                 }},
352                 }
353         },
354         .power_ctrl       = gp8psk_power_ctrl,
355 
356         .generic_bulk_ctrl_endpoint = 0x01,
357 
358         .num_device_descs = 4,
359         .devices = {
360                 { .name = "Genpix 8PSK-to-USB2 Rev.1 DVB-S receiver",
361                   .cold_ids = { &gp8psk_usb_table[0], NULL },
362                   .warm_ids = { &gp8psk_usb_table[1], NULL },
363                 },
364                 { .name = "Genpix 8PSK-to-USB2 Rev.2 DVB-S receiver",
365                   .cold_ids = { NULL },
366                   .warm_ids = { &gp8psk_usb_table[2], NULL },
367                 },
368                 { .name = "Genpix SkyWalker-1 DVB-S receiver",
369                   .cold_ids = { NULL },
370                   .warm_ids = { &gp8psk_usb_table[3], NULL },
371                 },
372                 { .name = "Genpix SkyWalker-2 DVB-S receiver",
373                   .cold_ids = { NULL },
374                   .warm_ids = { &gp8psk_usb_table[4], NULL },
375                 },
376                 { NULL },
377         }
378 };
379 
380 /* usb specific object needed to register this driver with the usb subsystem */
381 static struct usb_driver gp8psk_usb_driver = {
382         .name           = "dvb_usb_gp8psk",
383         .probe          = gp8psk_usb_probe,
384         .disconnect = dvb_usb_device_exit,
385         .id_table       = gp8psk_usb_table,
386 };
387 
388 module_usb_driver(gp8psk_usb_driver);
389 
390 MODULE_AUTHOR("Alan Nisota <alannisota@gamil.com>");
391 MODULE_DESCRIPTION("Driver for Genpix DVB-S");
392 MODULE_VERSION("1.1");
393 MODULE_LICENSE("GPL");
394 

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