summaryrefslogtreecommitdiffstats
path: root/drivers/media/common/b2c2/flexcop.c
blob: 412c5daf2b48c4208f2fb0bd60ed50fb2f4acbef (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
/*
 * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
 * flexcop.c - main module part
 * Copyright (C) 2004-9 Patrick Boettcher <patrick.boettcher@desy.de>
 * based on skystar2-driver Copyright (C) 2003 Vadim Catana, skystar@moldova.cc
 *
 * Acknowledgements:
 *   John Jurrius from BBTI, Inc. for extensive support
 *                    with code examples and data books
 *   Bjarne Steinsbo, bjarne at steinsbo.com (some ideas for rewriting)
 *
 * Contributions to the skystar2-driver have been done by
 *   Vincenzo Di Massa, hawk.it at tiscalinet.it (several DiSEqC fixes)
 *   Roberto Ragusa, r.ragusa at libero.it (polishing, restyling the code)
 *   Uwe Bugla, uwe.bugla at gmx.de (doing tests, restyling code, writing docu)
 *   Niklas Peinecke, peinecke at gdv.uni-hannover.de (hardware pid/mac
 *               filtering)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include "flexcop.h"

#define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip"
#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de"

#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
#define DEBSTATUS ""
#else
#define DEBSTATUS " (debugging is not enabled)"
#endif

int b2c2_flexcop_debug;
EXPORT_SYMBOL_GPL(b2c2_flexcop_debug);
module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
MODULE_PARM_DESC(debug,
		"set debug level (1=info,2=tuner,4=i2c,8=ts,"
		"16=sram,32=reg (|-able))."
		DEBSTATUS);
#undef DEBSTATUS

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

/* global zero for ibi values */
flexcop_ibi_value ibi_zero;

static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
	return flexcop_pid_feed_control(fc, dvbdmxfeed, 1);
}

static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
	return flexcop_pid_feed_control(fc, dvbdmxfeed, 0);
}

static int flexcop_dvb_init(struct flexcop_device *fc)
{
	int ret = dvb_register_adapter(&fc->dvb_adapter,
			"FlexCop Digital TV device", fc->owner,
			fc->dev, adapter_nr);
	if (ret < 0) {
		err("error registering DVB adapter");
		return ret;
	}
	fc->dvb_adapter.priv = fc;

	fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING
			| DMX_MEMORY_BASED_FILTERING);
	fc->demux.priv = fc;
	fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
	fc->demux.start_feed = flexcop_dvb_start_feed;
	fc->demux.stop_feed = flexcop_dvb_stop_feed;
	fc->demux.write_to_decoder = NULL;

	ret = dvb_dmx_init(&fc->demux);
	if (ret < 0) {
		err("dvb_dmx failed: error %d", ret);
		goto err_dmx;
	}

	fc->hw_frontend.source = DMX_FRONTEND_0;

	fc->dmxdev.filternum = fc->demux.feednum;
	fc->dmxdev.demux = &fc->demux.dmx;
	fc->dmxdev.capabilities = 0;
	ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter);
	if (ret < 0) {
		err("dvb_dmxdev_init failed: error %d", ret);
		goto err_dmx_dev;
	}

	ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend);
	if (ret < 0) {
		err("adding hw_frontend to dmx failed: error %d", ret);
		goto err_dmx_add_hw_frontend;
	}

	fc->mem_frontend.source = DMX_MEMORY_FE;
	ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend);
	if (ret < 0) {
		err("adding mem_frontend to dmx failed: error %d", ret);
		goto err_dmx_add_mem_frontend;
	}

	ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend);
	if (ret < 0) {
		err("connect frontend failed: error %d", ret);
		goto err_connect_frontend;
	}

	ret = dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
	if (ret < 0) {
		err("dvb_net_init failed: error %d", ret);
		goto err_net;
	}

	fc->init_state |= FC_STATE_DVB_INIT;
	return 0;

err_net:
	fc->demux.dmx.disconnect_frontend(&fc->demux.dmx);
err_connect_frontend:
	fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
err_dmx_add_mem_frontend:
	fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
err_dmx_add_hw_frontend:
	dvb_dmxdev_release(&fc->dmxdev);
err_dmx_dev:
	dvb_dmx_release(&fc->demux);
err_dmx:
	dvb_unregister_adapter(&fc->dvb_adapter);
	return ret;
}

static void flexcop_dvb_exit(struct flexcop_device *fc)
{
	if (fc->init_state & FC_STATE_DVB_INIT) {
		dvb_net_release(&fc->dvbnet);

		fc->demux.dmx.close(&fc->demux.dmx);
		fc->demux.dmx.remove_frontend(&fc->demux.dmx,
			&fc->mem_frontend);
		fc->demux.dmx.remove_frontend(&fc->demux.dmx,
			&fc->hw_frontend);
		dvb_dmxdev_release(&fc->dmxdev);
		dvb_dmx_release(&fc->demux);
		dvb_unregister_adapter(&fc->dvb_adapter);
		deb_info("deinitialized dvb stuff\n");
	}
	fc->init_state &= ~FC_STATE_DVB_INIT;
}

/* these methods are necessary to achieve the long-term-goal of hiding the
 * struct flexcop_device from the bus-parts */
void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
{
	dvb_dmx_swfilter(&fc->demux, buf, len);
}
EXPORT_SYMBOL(flexcop_pass_dmx_data);

void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
{
	dvb_dmx_swfilter_packets(&fc->demux, buf, no);
}
EXPORT_SYMBOL(flexcop_pass_dmx_packets);

static void flexcop_reset(struct flexcop_device *fc)
{
	flexcop_ibi_value v210, v204;

	/* reset the flexcop itself */
	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);

	v210.raw = 0;
	v210.sw_reset_210.reset_block_000 = 1;
	v210.sw_reset_210.reset_block_100 = 1;
	v210.sw_reset_210.reset_block_200 = 1;
	v210.sw_reset_210.reset_block_300 = 1;
	v210.sw_reset_210.reset_block_400 = 1;
	v210.sw_reset_210.reset_block_500 = 1;
	v210.sw_reset_210.reset_block_600 = 1;
	v210.sw_reset_210.reset_block_700 = 1;
	v210.sw_reset_210.Block_reset_enable = 0xb2;
	v210.sw_reset_210.Special_controls = 0xc259;
	fc->write_ibi_reg(fc,sw_reset_210,v210);
	msleep(1);

	/* reset the periphical devices */

	v204 = fc->read_ibi_reg(fc,misc_204);
	v204.misc_204.Per_reset_sig = 0;
	fc->write_ibi_reg(fc,misc_204,v204);
	msleep(1);
	v204.misc_204.Per_reset_sig = 1;
	fc->write_ibi_reg(fc,misc_204,v204);
}

void flexcop_reset_block_300(struct flexcop_device *fc)
{
	flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208),
			  v210 = fc->read_ibi_reg(fc, sw_reset_210);

	deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw);
	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);

	v210.sw_reset_210.reset_block_300 = 1;
	v210.sw_reset_210.Block_reset_enable = 0xb2;

	fc->write_ibi_reg(fc,sw_reset_210,v210);
	fc->write_ibi_reg(fc,ctrl_208,v208_save);
}

struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
{
	void *bus;
	struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device),
				GFP_KERNEL);
	if (!fc) {
		err("no memory");
		return NULL;
	}

	bus = kzalloc(bus_specific_len, GFP_KERNEL);
	if (!bus) {
		err("no memory");
		kfree(fc);
		return NULL;
	}

	fc->bus_specific = bus;

	return fc;
}
EXPORT_SYMBOL(flexcop_device_kmalloc);

void flexcop_device_kfree(struct flexcop_device *fc)
{
	kfree(fc->bus_specific);
	kfree(fc);
}
EXPORT_SYMBOL(flexcop_device_kfree);

int flexcop_device_initialize(struct flexcop_device *fc)
{
	int ret;
	ibi_zero.raw = 0;

	flexcop_reset(fc);
	flexcop_determine_revision(fc);
	flexcop_sram_init(fc);
	flexcop_hw_filter_init(fc);
	flexcop_smc_ctrl(fc, 0);

	ret = flexcop_dvb_init(fc);
	if (ret)
		goto error;

	/* i2c has to be done before doing EEProm stuff -
	 * because the EEProm is accessed via i2c */
	ret = flexcop_i2c_init(fc);
	if (ret)
		goto error;

	/* do the MAC address reading after initializing the dvb_adapter */
	if (fc->get_mac_addr(fc, 0) == 0) {
		u8 *b = fc->dvb_adapter.proposed_mac;
		info("MAC address = %pM", b);
		flexcop_set_mac_filter(fc,b);
		flexcop_mac_filter_ctrl(fc,1);
	} else
		warn("reading of MAC address failed.\n");

	ret = flexcop_frontend_init(fc);
	if (ret)
		goto error;

	flexcop_device_name(fc,"initialization of","complete");
	return 0;

error:
	flexcop_device_exit(fc);
	return ret;
}
EXPORT_SYMBOL(flexcop_device_initialize);

void flexcop_device_exit(struct flexcop_device *fc)
{
	flexcop_frontend_exit(fc);
	flexcop_i2c_exit(fc);
	flexcop_dvb_exit(fc);
}
EXPORT_SYMBOL(flexcop_device_exit);

static int flexcop_module_init(void)
{
	info(DRIVER_NAME " loaded successfully");
	return 0;
}

static void flexcop_module_cleanup(void)
{
	info(DRIVER_NAME " unloaded successfully");
}

module_init(flexcop_module_init);
module_exit(flexcop_module_cleanup);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_NAME);
MODULE_LICENSE("GPL");