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staging: usbip: bugfix for isochronous packets and optimization
[zen-stable.git] / drivers / media / dvb / dvb-usb / ec168.c
blob52f5d4f0f230f62d7015bd841e29393b93536562
1 /*
2 * E3C EC168 DVB USB driver
3 *
4 * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
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 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 */
21
22 #include "ec168.h"
23 #include "ec100.h"
24 #include "mxl5005s.h"
25
26 /* debug */
27 static int dvb_usb_ec168_debug;
28 module_param_named(debug, dvb_usb_ec168_debug, int, 0644);
29 MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
30 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
31
32 static struct ec100_config ec168_ec100_config;
33
34 static int ec168_rw_udev(struct usb_device *udev, struct ec168_req *req)
35 {
36 int ret;
37 unsigned int pipe;
38 u8 request, requesttype;
39 u8 buf[req->size];
40
41 switch (req->cmd) {
42 case DOWNLOAD_FIRMWARE:
43 case GPIO:
44 case WRITE_I2C:
45 case STREAMING_CTRL:
46 requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
47 request = req->cmd;
48 break;
49 case READ_I2C:
50 requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
51 request = req->cmd;
52 break;
53 case GET_CONFIG:
54 requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
55 request = CONFIG;
56 break;
57 case SET_CONFIG:
58 requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
59 request = CONFIG;
60 break;
61 case WRITE_DEMOD:
62 requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
63 request = DEMOD_RW;
64 break;
65 case READ_DEMOD:
66 requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
67 request = DEMOD_RW;
68 break;
69 default:
70 err("unknown command:%02x", req->cmd);
71 ret = -EPERM;
72 goto error;
73 }
74
75 if (requesttype == (USB_TYPE_VENDOR | USB_DIR_OUT)) {
76 /* write */
77 memcpy(buf, req->data, req->size);
78 pipe = usb_sndctrlpipe(udev, 0);
79 } else {
80 /* read */
81 pipe = usb_rcvctrlpipe(udev, 0);
82 }
83
84 msleep(1); /* avoid I2C errors */
85
86 ret = usb_control_msg(udev, pipe, request, requesttype, req->value,
87 req->index, buf, sizeof(buf), EC168_USB_TIMEOUT);
88
89 ec168_debug_dump(request, requesttype, req->value, req->index, buf,
90 req->size, deb_xfer);
91
92 if (ret < 0)
93 goto error;
94 else
95 ret = 0;
96
97 /* read request, copy returned data to return buf */
98 if (!ret && requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
99 memcpy(req->data, buf, req->size);
100
101 return ret;
102 error:
103 deb_info("%s: failed:%d\n", __func__, ret);
104 return ret;
105 }
106
107 static int ec168_ctrl_msg(struct dvb_usb_device *d, struct ec168_req *req)
108 {
109 return ec168_rw_udev(d->udev, req);
110 }
111
112 /* I2C */
113 static int ec168_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
114 int num)
115 {
116 struct dvb_usb_device *d = i2c_get_adapdata(adap);
117 struct ec168_req req;
118 int i = 0;
119 int ret;
120
121 if (num > 2)
122 return -EINVAL;
123
124 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
125 return -EAGAIN;
126
127 while (i < num) {
128 if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
129 if (msg[i].addr == ec168_ec100_config.demod_address) {
130 req.cmd = READ_DEMOD;
131 req.value = 0;
132 req.index = 0xff00 + msg[i].buf[0]; /* reg */
133 req.size = msg[i+1].len; /* bytes to read */
134 req.data = &msg[i+1].buf[0];
135 ret = ec168_ctrl_msg(d, &req);
136 i += 2;
137 } else {
138 err("I2C read not implemented");
139 ret = -ENOSYS;
140 i += 2;
141 }
142 } else {
143 if (msg[i].addr == ec168_ec100_config.demod_address) {
144 req.cmd = WRITE_DEMOD;
145 req.value = msg[i].buf[1]; /* val */
146 req.index = 0xff00 + msg[i].buf[0]; /* reg */
147 req.size = 0;
148 req.data = NULL;
149 ret = ec168_ctrl_msg(d, &req);
150 i += 1;
151 } else {
152 req.cmd = WRITE_I2C;
153 req.value = msg[i].buf[0]; /* val */
154 req.index = 0x0100 + msg[i].addr; /* I2C addr */
155 req.size = msg[i].len-1;
156 req.data = &msg[i].buf[1];
157 ret = ec168_ctrl_msg(d, &req);
158 i += 1;
159 }
160 }
161 if (ret)
162 goto error;
163
164 }
165 ret = i;
166
167 error:
168 mutex_unlock(&d->i2c_mutex);
169 return i;
170 }
171
172
173 static u32 ec168_i2c_func(struct i2c_adapter *adapter)
174 {
175 return I2C_FUNC_I2C;
176 }
177
178 static struct i2c_algorithm ec168_i2c_algo = {
179 .master_xfer = ec168_i2c_xfer,
180 .functionality = ec168_i2c_func,
181 };
182
183 /* Callbacks for DVB USB */
184 static struct ec100_config ec168_ec100_config = {
185 .demod_address = 0xff, /* not real address, demod is integrated */
186 };
187
188 static int ec168_ec100_frontend_attach(struct dvb_usb_adapter *adap)
189 {
190 deb_info("%s:\n", __func__);
191 adap->fe = dvb_attach(ec100_attach, &ec168_ec100_config,
192 &adap->dev->i2c_adap);
193 if (adap->fe == NULL)
194 return -ENODEV;
195
196 return 0;
197 }
198
199 static struct mxl5005s_config ec168_mxl5003s_config = {
200 .i2c_address = 0xc6,
201 .if_freq = IF_FREQ_4570000HZ,
202 .xtal_freq = CRYSTAL_FREQ_16000000HZ,
203 .agc_mode = MXL_SINGLE_AGC,
204 .tracking_filter = MXL_TF_OFF,
205 .rssi_enable = MXL_RSSI_ENABLE,
206 .cap_select = MXL_CAP_SEL_ENABLE,
207 .div_out = MXL_DIV_OUT_4,
208 .clock_out = MXL_CLOCK_OUT_DISABLE,
209 .output_load = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
210 .top = MXL5005S_TOP_25P2,
211 .mod_mode = MXL_DIGITAL_MODE,
212 .if_mode = MXL_ZERO_IF,
213 .AgcMasterByte = 0x00,
214 };
215
216 static int ec168_mxl5003s_tuner_attach(struct dvb_usb_adapter *adap)
217 {
218 deb_info("%s:\n", __func__);
219 return dvb_attach(mxl5005s_attach, adap->fe, &adap->dev->i2c_adap,
220 &ec168_mxl5003s_config) == NULL ? -ENODEV : 0;
221 }
222
223 static int ec168_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
224 {
225 struct ec168_req req = {STREAMING_CTRL, 0x7f01, 0x0202, 0, NULL};
226 deb_info("%s: onoff:%d\n", __func__, onoff);
227 if (onoff)
228 req.index = 0x0102;
229 return ec168_ctrl_msg(adap->dev, &req);
230 }
231
232 static int ec168_download_firmware(struct usb_device *udev,
233 const struct firmware *fw)
234 {
235 int i, len, packets, remainder, ret;
236 u16 addr = 0x0000; /* firmware start address */
237 struct ec168_req req = {DOWNLOAD_FIRMWARE, 0, 0, 0, NULL};
238 deb_info("%s:\n", __func__);
239
240 #define FW_PACKET_MAX_DATA 2048
241 packets = fw->size / FW_PACKET_MAX_DATA;
242 remainder = fw->size % FW_PACKET_MAX_DATA;
243 len = FW_PACKET_MAX_DATA;
244 for (i = 0; i <= packets; i++) {
245 if (i == packets) /* set size of the last packet */
246 len = remainder;
247
248 req.size = len;
249 req.data = (u8 *)(fw->data + i * FW_PACKET_MAX_DATA);
250 req.index = addr;
251 addr += FW_PACKET_MAX_DATA;
252
253 ret = ec168_rw_udev(udev, &req);
254 if (ret) {
255 err("firmware download failed:%d packet:%d", ret, i);
256 goto error;
257 }
258 }
259 req.size = 0;
260
261 /* set "warm"? */
262 req.cmd = SET_CONFIG;
263 req.value = 0;
264 req.index = 0x0001;
265 ret = ec168_rw_udev(udev, &req);
266 if (ret)
267 goto error;
268
269 /* really needed - no idea what does */
270 req.cmd = GPIO;
271 req.value = 0;
272 req.index = 0x0206;
273 ret = ec168_rw_udev(udev, &req);
274 if (ret)
275 goto error;
276
277 /* activate tuner I2C? */
278 req.cmd = WRITE_I2C;
279 req.value = 0;
280 req.index = 0x00c6;
281 ret = ec168_rw_udev(udev, &req);
282 if (ret)
283 goto error;
284
285 return ret;
286 error:
287 deb_info("%s: failed:%d\n", __func__, ret);
288 return ret;
289 }
290
291 static int ec168_identify_state(struct usb_device *udev,
292 struct dvb_usb_device_properties *props,
293 struct dvb_usb_device_description **desc, int *cold)
294 {
295 int ret;
296 u8 reply;
297 struct ec168_req req = {GET_CONFIG, 0, 1, sizeof(reply), &reply};
298 deb_info("%s:\n", __func__);
299
300 ret = ec168_rw_udev(udev, &req);
301 if (ret)
302 goto error;
303
304 deb_info("%s: reply:%02x\n", __func__, reply);
305
306 if (reply == 0x01)
307 *cold = 0;
308 else
309 *cold = 1;
310
311 return ret;
312 error:
313 deb_info("%s: failed:%d\n", __func__, ret);
314 return ret;
315 }
316
317 /* DVB USB Driver stuff */
318 static struct dvb_usb_device_properties ec168_properties;
319
320 static int ec168_probe(struct usb_interface *intf,
321 const struct usb_device_id *id)
322 {
323 int ret;
324 deb_info("%s: interface:%d\n", __func__,
325 intf->cur_altsetting->desc.bInterfaceNumber);
326
327 ret = dvb_usb_device_init(intf, &ec168_properties, THIS_MODULE, NULL,
328 adapter_nr);
329 if (ret)
330 goto error;
331
332 return ret;
333 error:
334 deb_info("%s: failed:%d\n", __func__, ret);
335 return ret;
336 }
337
338 #define E3C_EC168_1689 0
339 #define E3C_EC168_FFFA 1
340 #define E3C_EC168_FFFB 2
341 #define E3C_EC168_1001 3
342 #define E3C_EC168_1002 4
343
344 static struct usb_device_id ec168_id[] = {
345 [E3C_EC168_1689] =
346 {USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168)},
347 [E3C_EC168_FFFA] =
348 {USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_2)},
349 [E3C_EC168_FFFB] =
350 {USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_3)},
351 [E3C_EC168_1001] =
352 {USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_4)},
353 [E3C_EC168_1002] =
354 {USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_5)},
355 {} /* terminating entry */
356 };
357
358 MODULE_DEVICE_TABLE(usb, ec168_id);
359
360 static struct dvb_usb_device_properties ec168_properties = {
361 .caps = DVB_USB_IS_AN_I2C_ADAPTER,
362
363 .usb_ctrl = DEVICE_SPECIFIC,
364 .download_firmware = ec168_download_firmware,
365 .firmware = "dvb-usb-ec168.fw",
366 .no_reconnect = 1,
367
368 .size_of_priv = 0,
369
370 .num_adapters = 1,
371 .adapter = {
372 {
373 .streaming_ctrl = ec168_streaming_ctrl,
374 .frontend_attach = ec168_ec100_frontend_attach,
375 .tuner_attach = ec168_mxl5003s_tuner_attach,
376 .stream = {
377 .type = USB_BULK,
378 .count = 6,
379 .endpoint = 0x82,
380 .u = {
381 .bulk = {
382 .buffersize = (32*512),
383 }
384 }
385 },
386 }
387 },
388
389 .identify_state = ec168_identify_state,
390
391 .i2c_algo = &ec168_i2c_algo,
392
393 .num_device_descs = 1,
394 .devices = {
395 {
396 .name = "E3C EC168 DVB-T USB2.0 reference design",
397 .cold_ids = {
398 &ec168_id[E3C_EC168_1689],
399 &ec168_id[E3C_EC168_FFFA],
400 &ec168_id[E3C_EC168_FFFB],
401 &ec168_id[E3C_EC168_1001],
402 &ec168_id[E3C_EC168_1002],
403 NULL},
404 .warm_ids = {NULL},
405 },
406 }
407 };
408
409 static struct usb_driver ec168_driver = {
410 .name = "dvb_usb_ec168",
411 .probe = ec168_probe,
412 .disconnect = dvb_usb_device_exit,
413 .id_table = ec168_id,
414 };
415
416 /* module stuff */
417 static int __init ec168_module_init(void)
418 {
419 int ret;
420 deb_info("%s:\n", __func__);
421 ret = usb_register(&ec168_driver);
422 if (ret)
423 err("module init failed:%d", ret);
424
425 return ret;
426 }
427
428 static void __exit ec168_module_exit(void)
429 {
430 deb_info("%s:\n", __func__);
431 /* deregister this driver from the USB subsystem */
432 usb_deregister(&ec168_driver);
433 }
434
435 module_init(ec168_module_init);
436 module_exit(ec168_module_exit);
437
438 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
439 MODULE_DESCRIPTION("E3C EC168 DVB-T USB2.0 driver");
440 MODULE_LICENSE("GPL");