summaryrefslogtreecommitdiffstats
path: root/drivers/media/usb/as102/as102_drv.c
blob: 6b1d3528a0a7f1138eef3ff23d61c6a0974d737e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Abilis Systems Single DVB-T Receiver
 * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
 * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
 */
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/kref.h>
#include <linux/uaccess.h>
#include <linux/usb.h>

/* header file for usb device driver*/
#include "as102_drv.h"
#include "as10x_cmd.h"
#include "as102_fe.h"
#include "as102_fw.h"
#include <media/dvbdev.h>

int dual_tuner;
module_param_named(dual_tuner, dual_tuner, int, 0644);
MODULE_PARM_DESC(dual_tuner, "Activate Dual-Tuner config (default: off)");

static int fw_upload = 1;
module_param_named(fw_upload, fw_upload, int, 0644);
MODULE_PARM_DESC(fw_upload, "Turn on/off default FW upload (default: on)");

static int pid_filtering;
module_param_named(pid_filtering, pid_filtering, int, 0644);
MODULE_PARM_DESC(pid_filtering, "Activate HW PID filtering (default: off)");

static int ts_auto_disable;
module_param_named(ts_auto_disable, ts_auto_disable, int, 0644);
MODULE_PARM_DESC(ts_auto_disable, "Stream Auto Enable on FW (default: off)");

int elna_enable = 1;
module_param_named(elna_enable, elna_enable, int, 0644);
MODULE_PARM_DESC(elna_enable, "Activate eLNA (default: on)");

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

static void as102_stop_stream(struct as102_dev_t *dev)
{
	struct as10x_bus_adapter_t *bus_adap;

	if (dev != NULL)
		bus_adap = &dev->bus_adap;
	else
		return;

	if (bus_adap->ops->stop_stream != NULL)
		bus_adap->ops->stop_stream(dev);

	if (ts_auto_disable) {
		if (mutex_lock_interruptible(&dev->bus_adap.lock))
			return;

		if (as10x_cmd_stop_streaming(bus_adap) < 0)
			dev_dbg(&dev->bus_adap.usb_dev->dev,
				"as10x_cmd_stop_streaming failed\n");

		mutex_unlock(&dev->bus_adap.lock);
	}
}

static int as102_start_stream(struct as102_dev_t *dev)
{
	struct as10x_bus_adapter_t *bus_adap;
	int ret = -EFAULT;

	if (dev != NULL)
		bus_adap = &dev->bus_adap;
	else
		return ret;

	if (bus_adap->ops->start_stream != NULL)
		ret = bus_adap->ops->start_stream(dev);

	if (ts_auto_disable) {
		if (mutex_lock_interruptible(&dev->bus_adap.lock))
			return -EFAULT;

		ret = as10x_cmd_start_streaming(bus_adap);

		mutex_unlock(&dev->bus_adap.lock);
	}

	return ret;
}

static int as10x_pid_filter(struct as102_dev_t *dev,
			    int index, u16 pid, int onoff) {

	struct as10x_bus_adapter_t *bus_adap = &dev->bus_adap;
	int ret = -EFAULT;

	if (mutex_lock_interruptible(&dev->bus_adap.lock)) {
		dev_dbg(&dev->bus_adap.usb_dev->dev,
			"amutex_lock_interruptible(lock) failed !\n");
		return -EBUSY;
	}

	switch (onoff) {
	case 0:
		ret = as10x_cmd_del_PID_filter(bus_adap, (uint16_t) pid);
		dev_dbg(&dev->bus_adap.usb_dev->dev,
			"DEL_PID_FILTER([%02d] 0x%04x) ret = %d\n",
			index, pid, ret);
		break;
	case 1:
	{
		struct as10x_ts_filter filter;

		filter.type = TS_PID_TYPE_TS;
		filter.idx = 0xFF;
		filter.pid = pid;

		ret = as10x_cmd_add_PID_filter(bus_adap, &filter);
		dev_dbg(&dev->bus_adap.usb_dev->dev,
			"ADD_PID_FILTER([%02d -> %02d], 0x%04x) ret = %d\n",
			index, filter.idx, filter.pid, ret);
		break;
	}
	}

	mutex_unlock(&dev->bus_adap.lock);
	return ret;
}

static int as102_dvb_dmx_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
	int ret = 0;
	struct dvb_demux *demux = dvbdmxfeed->demux;
	struct as102_dev_t *as102_dev = demux->priv;

	if (mutex_lock_interruptible(&as102_dev->sem))
		return -ERESTARTSYS;

	if (pid_filtering)
		as10x_pid_filter(as102_dev, dvbdmxfeed->index,
				 dvbdmxfeed->pid, 1);

	if (as102_dev->streaming++ == 0)
		ret = as102_start_stream(as102_dev);

	mutex_unlock(&as102_dev->sem);
	return ret;
}

static int as102_dvb_dmx_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
	struct dvb_demux *demux = dvbdmxfeed->demux;
	struct as102_dev_t *as102_dev = demux->priv;

	if (mutex_lock_interruptible(&as102_dev->sem))
		return -ERESTARTSYS;

	if (--as102_dev->streaming == 0)
		as102_stop_stream(as102_dev);

	if (pid_filtering)
		as10x_pid_filter(as102_dev, dvbdmxfeed->index,
				 dvbdmxfeed->pid, 0);

	mutex_unlock(&as102_dev->sem);
	return 0;
}

static int as102_set_tune(void *priv, struct as10x_tune_args *tune_args)
{
	struct as10x_bus_adapter_t *bus_adap = priv;
	int ret;

	/* Set frontend arguments */
	if (mutex_lock_interruptible(&bus_adap->lock))
		return -EBUSY;

	ret =  as10x_cmd_set_tune(bus_adap, tune_args);
	if (ret != 0)
		dev_dbg(&bus_adap->usb_dev->dev,
			"as10x_cmd_set_tune failed. (err = %d)\n", ret);

	mutex_unlock(&bus_adap->lock);

	return ret;
}

static int as102_get_tps(void *priv, struct as10x_tps *tps)
{
	struct as10x_bus_adapter_t *bus_adap = priv;
	int ret;

	if (mutex_lock_interruptible(&bus_adap->lock))
		return -EBUSY;

	/* send abilis command: GET_TPS */
	ret = as10x_cmd_get_tps(bus_adap, tps);

	mutex_unlock(&bus_adap->lock);

	return ret;
}

static int as102_get_status(void *priv, struct as10x_tune_status *tstate)
{
	struct as10x_bus_adapter_t *bus_adap = priv;
	int ret;

	if (mutex_lock_interruptible(&bus_adap->lock))
		return -EBUSY;

	/* send abilis command: GET_TUNE_STATUS */
	ret = as10x_cmd_get_tune_status(bus_adap, tstate);
	if (ret < 0) {
		dev_dbg(&bus_adap->usb_dev->dev,
			"as10x_cmd_get_tune_status failed (err = %d)\n",
			ret);
	}

	mutex_unlock(&bus_adap->lock);

	return ret;
}

static int as102_get_stats(void *priv, struct as10x_demod_stats *demod_stats)
{
	struct as10x_bus_adapter_t *bus_adap = priv;
	int ret;

	if (mutex_lock_interruptible(&bus_adap->lock))
		return -EBUSY;

	/* send abilis command: GET_TUNE_STATUS */
	ret = as10x_cmd_get_demod_stats(bus_adap, demod_stats);
	if (ret < 0) {
		dev_dbg(&bus_adap->usb_dev->dev,
			"as10x_cmd_get_demod_stats failed (probably not tuned)\n");
	} else {
		dev_dbg(&bus_adap->usb_dev->dev,
			"demod status: fc: 0x%08x, bad fc: 0x%08x, bytes corrected: 0x%08x , MER: 0x%04x\n",
			demod_stats->frame_count,
			demod_stats->bad_frame_count,
			demod_stats->bytes_fixed_by_rs,
			demod_stats->mer);
	}
	mutex_unlock(&bus_adap->lock);

	return ret;
}

static int as102_stream_ctrl(void *priv, int acquire, uint32_t elna_cfg)
{
	struct as10x_bus_adapter_t *bus_adap = priv;
	int ret;

	if (mutex_lock_interruptible(&bus_adap->lock))
		return -EBUSY;

	if (acquire) {
		if (elna_enable)
			as10x_cmd_set_context(bus_adap,
					      CONTEXT_LNA, elna_cfg);

		ret = as10x_cmd_turn_on(bus_adap);
	} else {
		ret = as10x_cmd_turn_off(bus_adap);
	}

	mutex_unlock(&bus_adap->lock);

	return ret;
}

static const struct as102_fe_ops as102_fe_ops = {
	.set_tune = as102_set_tune,
	.get_tps  = as102_get_tps,
	.get_status = as102_get_status,
	.get_stats = as102_get_stats,
	.stream_ctrl = as102_stream_ctrl,
};

int as102_dvb_register(struct as102_dev_t *as102_dev)
{
	struct device *dev = &as102_dev->bus_adap.usb_dev->dev;
	int ret;

	ret = dvb_register_adapter(&as102_dev->dvb_adap,
			   as102_dev->name, THIS_MODULE,
			   dev, adapter_nr);
	if (ret < 0) {
		dev_err(dev, "%s: dvb_register_adapter() failed: %d\n",
			__func__, ret);
		return ret;
	}

	as102_dev->dvb_dmx.priv = as102_dev;
	as102_dev->dvb_dmx.filternum = pid_filtering ? 16 : 256;
	as102_dev->dvb_dmx.feednum = 256;
	as102_dev->dvb_dmx.start_feed = as102_dvb_dmx_start_feed;
	as102_dev->dvb_dmx.stop_feed = as102_dvb_dmx_stop_feed;

	as102_dev->dvb_dmx.dmx.capabilities = DMX_TS_FILTERING |
					      DMX_SECTION_FILTERING;

	as102_dev->dvb_dmxdev.filternum = as102_dev->dvb_dmx.filternum;
	as102_dev->dvb_dmxdev.demux = &as102_dev->dvb_dmx.dmx;
	as102_dev->dvb_dmxdev.capabilities = 0;

	ret = dvb_dmx_init(&as102_dev->dvb_dmx);
	if (ret < 0) {
		dev_err(dev, "%s: dvb_dmx_init() failed: %d\n", __func__, ret);
		goto edmxinit;
	}

	ret = dvb_dmxdev_init(&as102_dev->dvb_dmxdev, &as102_dev->dvb_adap);
	if (ret < 0) {
		dev_err(dev, "%s: dvb_dmxdev_init() failed: %d\n",
			__func__, ret);
		goto edmxdinit;
	}

	/* Attach the frontend */
	as102_dev->dvb_fe = dvb_attach(as102_attach, as102_dev->name,
				       &as102_fe_ops,
				       &as102_dev->bus_adap,
				       as102_dev->elna_cfg);
	if (!as102_dev->dvb_fe) {
		ret = -ENODEV;
		dev_err(dev, "%s: as102_attach() failed: %d",
		    __func__, ret);
		goto efereg;
	}

	ret =  dvb_register_frontend(&as102_dev->dvb_adap, as102_dev->dvb_fe);
	if (ret < 0) {
		dev_err(dev, "%s: as102_dvb_register_frontend() failed: %d",
		    __func__, ret);
		goto efereg;
	}

	/* init bus mutex for token locking */
	mutex_init(&as102_dev->bus_adap.lock);

	/* init start / stop stream mutex */
	mutex_init(&as102_dev->sem);

	/*
	 * try to load as102 firmware. If firmware upload failed, we'll be
	 * able to upload it later.
	 */
	if (fw_upload)
		try_then_request_module(as102_fw_upload(&as102_dev->bus_adap),
				"firmware_class");

	pr_info("Registered device %s", as102_dev->name);
	return 0;

efereg:
	dvb_dmxdev_release(&as102_dev->dvb_dmxdev);
edmxdinit:
	dvb_dmx_release(&as102_dev->dvb_dmx);
edmxinit:
	dvb_unregister_adapter(&as102_dev->dvb_adap);
	return ret;
}

void as102_dvb_unregister(struct as102_dev_t *as102_dev)
{
	/* unregister as102 frontend */
	dvb_unregister_frontend(as102_dev->dvb_fe);

	/* detach frontend */
	dvb_frontend_detach(as102_dev->dvb_fe);

	/* unregister demux device */
	dvb_dmxdev_release(&as102_dev->dvb_dmxdev);
	dvb_dmx_release(&as102_dev->dvb_dmx);

	/* unregister dvb adapter */
	dvb_unregister_adapter(&as102_dev->dvb_adap);

	pr_info("Unregistered device %s", as102_dev->name);
}

module_usb_driver(as102_usb_driver);

/* modinfo details */
MODULE_DESCRIPTION(DRIVER_FULL_NAME);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pierrick Hascoet <pierrick.hascoet@abilis.com>");