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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) "
139                         "Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
140                         bcm4500_firmware,ret);
141                 return ret;
142         }
143 
144         ret = -EINVAL;
145 
146         if (gp8psk_usb_out_op(d, LOAD_BCM4500,1,0,NULL, 0))
147                 goto out_rel_fw;
148 
149         info("downloading bcm4500 firmware from file '%s'",bcm4500_firmware);
150 
151         ptr = fw->data;
152         buf = kmalloc(64, GFP_KERNEL | GFP_DMA);
153         if (!buf) {
154                 ret = -ENOMEM;
155                 goto out_rel_fw;
156         }
157 
158         while (ptr[0] != 0xff) {
159                 u16 buflen = ptr[0] + 4;
160                 if (ptr + buflen >= fw->data + fw->size) {
161                         err("failed to load bcm4500 firmware.");
162                         goto out_free;
163                 }
164                 if (buflen > 64) {
165                         err("firmare chunk size bigger than 64 bytes.");
166                         goto out_free;
167                 }
168 
169                 memcpy(buf, ptr, buflen);
170                 if (dvb_usb_generic_write(d, buf, buflen)) {
171                         err("failed to load bcm4500 firmware.");
172                         goto out_free;
173                 }
174                 ptr += buflen;
175         }
176 
177         ret = 0;
178 
179 out_free:
180         kfree(buf);
181 out_rel_fw:
182         release_firmware(fw);
183 
184         return ret;
185 }
186 
187 static int gp8psk_power_ctrl(struct dvb_usb_device *d, int onoff)
188 {
189         u8 status, buf;
190         int gp_product_id = le16_to_cpu(d->udev->descriptor.idProduct);
191 
192         if (onoff) {
193                 gp8psk_usb_in_op(d, GET_8PSK_CONFIG,0,0,&status,1);
194                 if (! (status & bm8pskStarted)) {  /* started */
195                         if(gp_product_id == USB_PID_GENPIX_SKYWALKER_CW3K)
196                                 gp8psk_usb_out_op(d, CW3K_INIT, 1, 0, NULL, 0);
197                         if (gp8psk_usb_in_op(d, BOOT_8PSK, 1, 0, &buf, 1))
198                                 return -EINVAL;
199                         gp8psk_info(d);
200                 }
201 
202                 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
203                         if (! (status & bm8pskFW_Loaded)) /* BCM4500 firmware loaded */
204                                 if(gp8psk_load_bcm4500fw(d))
205                                         return -EINVAL;
206 
207                 if (! (status & bmIntersilOn)) /* LNB Power */
208                         if (gp8psk_usb_in_op(d, START_INTERSIL, 1, 0,
209                                         &buf, 1))
210                                 return -EINVAL;
211 
212                 /* Set DVB mode to 1 */
213                 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
214                         if (gp8psk_usb_out_op(d, SET_DVB_MODE, 1, 0, NULL, 0))
215                                 return -EINVAL;
216                 /* Abort possible TS (if previous tune crashed) */
217                 if (gp8psk_usb_out_op(d, ARM_TRANSFER, 0, 0, NULL, 0))
218                         return -EINVAL;
219         } else {
220                 /* Turn off LNB power */
221                 if (gp8psk_usb_in_op(d, START_INTERSIL, 0, 0, &buf, 1))
222                         return -EINVAL;
223                 /* Turn off 8psk power */
224                 if (gp8psk_usb_in_op(d, BOOT_8PSK, 0, 0, &buf, 1))
225                         return -EINVAL;
226                 if(gp_product_id == USB_PID_GENPIX_SKYWALKER_CW3K)
227                         gp8psk_usb_out_op(d, CW3K_INIT, 0, 0, NULL, 0);
228         }
229         return 0;
230 }
231 
232 static int gp8psk_bcm4500_reload(struct dvb_usb_device *d)
233 {
234         u8 buf;
235         int gp_product_id = le16_to_cpu(d->udev->descriptor.idProduct);
236 
237         deb_xfer("reloading firmware\n");
238 
239         /* Turn off 8psk power */
240         if (gp8psk_usb_in_op(d, BOOT_8PSK, 0, 0, &buf, 1))
241                 return -EINVAL;
242         /* Turn On 8psk power */
243         if (gp8psk_usb_in_op(d, BOOT_8PSK, 1, 0, &buf, 1))
244                 return -EINVAL;
245         /* load BCM4500 firmware */
246         if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
247                 if (gp8psk_load_bcm4500fw(d))
248                         return -EINVAL;
249         return 0;
250 }
251 
252 static int gp8psk_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
253 {
254         return gp8psk_usb_out_op(adap->dev, ARM_TRANSFER, onoff, 0 , NULL, 0);
255 }
256 
257 /* Callbacks for gp8psk-fe.c */
258 
259 static int gp8psk_fe_in(void *priv, u8 req, u16 value,
260                             u16 index, u8 *b, int blen)
261 {
262         struct dvb_usb_device *d = priv;
263 
264         return gp8psk_usb_in_op(d, req, value, index, b, blen);
265 }
266 
267 static int gp8psk_fe_out(void *priv, u8 req, u16 value,
268                             u16 index, u8 *b, int blen)
269 {
270         struct dvb_usb_device *d = priv;
271 
272         return gp8psk_usb_out_op(d, req, value, index, b, blen);
273 }
274 
275 static int gp8psk_fe_reload(void *priv)
276 {
277         struct dvb_usb_device *d = priv;
278 
279         return gp8psk_bcm4500_reload(d);
280 }
281 
282 const struct gp8psk_fe_ops gp8psk_fe_ops = {
283         .in = gp8psk_fe_in,
284         .out = gp8psk_fe_out,
285         .reload = gp8psk_fe_reload,
286 };
287 
288 static int gp8psk_frontend_attach(struct dvb_usb_adapter *adap)
289 {
290         struct dvb_usb_device *d = adap->dev;
291         int id = le16_to_cpu(d->udev->descriptor.idProduct);
292         int is_rev1;
293 
294         is_rev1 = (id == USB_PID_GENPIX_8PSK_REV_1_WARM) ? true : false;
295 
296         adap->fe_adap[0].fe = dvb_attach(gp8psk_fe_attach,
297                                          &gp8psk_fe_ops, d, is_rev1);
298         return 0;
299 }
300 
301 static struct dvb_usb_device_properties gp8psk_properties;
302 
303 static int gp8psk_usb_probe(struct usb_interface *intf,
304                 const struct usb_device_id *id)
305 {
306         int ret;
307         struct usb_device *udev = interface_to_usbdev(intf);
308         ret = dvb_usb_device_init(intf, &gp8psk_properties,
309                                   THIS_MODULE, NULL, adapter_nr);
310         if (ret == 0) {
311                 info("found Genpix USB device pID = %x (hex)",
312                         le16_to_cpu(udev->descriptor.idProduct));
313         }
314         return ret;
315 }
316 
317 static struct usb_device_id gp8psk_usb_table [] = {
318             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_1_COLD) },
319             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_1_WARM) },
320             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_2) },
321             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_1) },
322             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_2) },
323 /*          { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_CW3K) }, */
324             { 0 },
325 };
326 MODULE_DEVICE_TABLE(usb, gp8psk_usb_table);
327 
328 static struct dvb_usb_device_properties gp8psk_properties = {
329         .usb_ctrl = CYPRESS_FX2,
330         .firmware = "dvb-usb-gp8psk-01.fw",
331 
332         .size_of_priv = sizeof(struct gp8psk_state),
333 
334         .num_adapters = 1,
335         .adapter = {
336                 {
337                 .num_frontends = 1,
338                 .fe = {{
339                         .streaming_ctrl   = gp8psk_streaming_ctrl,
340                         .frontend_attach  = gp8psk_frontend_attach,
341                         /* parameter for the MPEG2-data transfer */
342                         .stream = {
343                                 .type = USB_BULK,
344                                 .count = 7,
345                                 .endpoint = 0x82,
346                                 .u = {
347                                         .bulk = {
348                                                 .buffersize = 8192,
349                                         }
350                                 }
351                         },
352                 }},
353                 }
354         },
355         .power_ctrl       = gp8psk_power_ctrl,
356 
357         .generic_bulk_ctrl_endpoint = 0x01,
358 
359         .num_device_descs = 4,
360         .devices = {
361                 { .name = "Genpix 8PSK-to-USB2 Rev.1 DVB-S receiver",
362                   .cold_ids = { &gp8psk_usb_table[0], NULL },
363                   .warm_ids = { &gp8psk_usb_table[1], NULL },
364                 },
365                 { .name = "Genpix 8PSK-to-USB2 Rev.2 DVB-S receiver",
366                   .cold_ids = { NULL },
367                   .warm_ids = { &gp8psk_usb_table[2], NULL },
368                 },
369                 { .name = "Genpix SkyWalker-1 DVB-S receiver",
370                   .cold_ids = { NULL },
371                   .warm_ids = { &gp8psk_usb_table[3], NULL },
372                 },
373                 { .name = "Genpix SkyWalker-2 DVB-S receiver",
374                   .cold_ids = { NULL },
375                   .warm_ids = { &gp8psk_usb_table[4], NULL },
376                 },
377                 { NULL },
378         }
379 };
380 
381 /* usb specific object needed to register this driver with the usb subsystem */
382 static struct usb_driver gp8psk_usb_driver = {
383         .name           = "dvb_usb_gp8psk",
384         .probe          = gp8psk_usb_probe,
385         .disconnect = dvb_usb_device_exit,
386         .id_table       = gp8psk_usb_table,
387 };
388 
389 module_usb_driver(gp8psk_usb_driver);
390 
391 MODULE_AUTHOR("Alan Nisota <alannisota@gamil.com>");
392 MODULE_DESCRIPTION("Driver for Genpix DVB-S");
393 MODULE_VERSION("1.1");
394 MODULE_LICENSE("GPL");
395 

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