flexcop.c revision 7def728f558c99489cc89f4c5d62dd64dc0289b4 
1/*
2 * flexcop.c - driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
3 *
4 * Copyright (C) 2004-5 Patrick Boettcher <patrick.boettcher@desy.de>
5 *
6 * based on the skystar2-driver
7 * Copyright (C) 2003 Vadim Catana, skystar@moldova.cc
8 *
9 * Acknowledgements:
10 *     John Jurrius from BBTI, Inc. for extensive support with
11 *         code examples and data books
12 *
13 *     Bjarne Steinsbo, bjarne at steinsbo.com (some ideas for rewriting)
14 *
15 * Contributions to the skystar2-driver have been done by
16 *     Vincenzo Di Massa, hawk.it at tiscalinet.it (several DiSEqC fixes)
17 *     Roberto Ragusa, r.ragusa at libero.it (polishing, restyling the code)
18 *     Niklas Peinecke, peinecke at gdv.uni-hannover.de (hardware pid/mac filtering)
19 *
20 *
21 * This program is free software; you can redistribute it and/or
22 * modify it under the terms of the GNU Lesser General Public License
23 * as published by the Free Software Foundation; either version 2.1
24 * of the License, or (at your option) any later version.
25 *
26 * This program is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
29 * GNU General Public License for more details.
30 *
31 * You should have received a copy of the GNU Lesser General Public License
32 * along with this program; if not, write to the Free Software
33 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
34 */
35
36#include "flexcop.h"
37
38#define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip"
39#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de"
40
41#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
42#define DEBSTATUS ""
43#else
44#define DEBSTATUS " (debugging is not enabled)"
45#endif
46
47int b2c2_flexcop_debug;
48module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
49MODULE_PARM_DESC(debug, "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram,32=reg (|-able))." DEBSTATUS);
50#undef DEBSTATUS
51
52DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
53
54/* global zero for ibi values */
55flexcop_ibi_value ibi_zero;
56
57static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
58{
59	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
60	return flexcop_pid_feed_control(fc,dvbdmxfeed,1);
61}
62
63static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
64{
65	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
66	return flexcop_pid_feed_control(fc,dvbdmxfeed,0);
67}
68
69static int flexcop_dvb_init(struct flexcop_device *fc)
70{
71	int ret = dvb_register_adapter(&fc->dvb_adapter,
72				       "FlexCop Digital TV device", fc->owner,
73				       fc->dev, adapter_nr);
74	if (ret < 0) {
75		err("error registering DVB adapter");
76		return ret;
77	}
78	fc->dvb_adapter.priv = fc;
79
80	fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
81	fc->demux.priv = fc;
82
83	fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
84
85	fc->demux.start_feed = flexcop_dvb_start_feed;
86	fc->demux.stop_feed = flexcop_dvb_stop_feed;
87	fc->demux.write_to_decoder = NULL;
88
89	if ((ret = dvb_dmx_init(&fc->demux)) < 0) {
90		err("dvb_dmx failed: error %d",ret);
91		goto err_dmx;
92	}
93
94	fc->hw_frontend.source = DMX_FRONTEND_0;
95
96	fc->dmxdev.filternum = fc->demux.feednum;
97	fc->dmxdev.demux = &fc->demux.dmx;
98	fc->dmxdev.capabilities = 0;
99	if ((ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter)) < 0) {
100		err("dvb_dmxdev_init failed: error %d",ret);
101		goto err_dmx_dev;
102	}
103
104	if ((ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend)) < 0) {
105		err("adding hw_frontend to dmx failed: error %d",ret);
106		goto err_dmx_add_hw_frontend;
107	}
108
109	fc->mem_frontend.source = DMX_MEMORY_FE;
110	if ((ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend)) < 0) {
111		err("adding mem_frontend to dmx failed: error %d",ret);
112		goto err_dmx_add_mem_frontend;
113	}
114
115	if ((ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend)) < 0) {
116		err("connect frontend failed: error %d",ret);
117		goto err_connect_frontend;
118	}
119
120	dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
121
122	fc->init_state |= FC_STATE_DVB_INIT;
123	return 0;
124
125err_connect_frontend:
126	fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->mem_frontend);
127err_dmx_add_mem_frontend:
128	fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
129err_dmx_add_hw_frontend:
130	dvb_dmxdev_release(&fc->dmxdev);
131err_dmx_dev:
132	dvb_dmx_release(&fc->demux);
133err_dmx:
134	dvb_unregister_adapter(&fc->dvb_adapter);
135	return ret;
136}
137
138static void flexcop_dvb_exit(struct flexcop_device *fc)
139{
140	if (fc->init_state & FC_STATE_DVB_INIT) {
141		dvb_net_release(&fc->dvbnet);
142
143		fc->demux.dmx.close(&fc->demux.dmx);
144		fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->mem_frontend);
145		fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
146		dvb_dmxdev_release(&fc->dmxdev);
147		dvb_dmx_release(&fc->demux);
148		dvb_unregister_adapter(&fc->dvb_adapter);
149
150		deb_info("deinitialized dvb stuff\n");
151	}
152	fc->init_state &= ~FC_STATE_DVB_INIT;
153}
154
155/* these methods are necessary to achieve the long-term-goal of hiding the
156 * struct flexcop_device from the bus-parts */
157void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
158{
159	dvb_dmx_swfilter(&fc->demux, buf, len);
160}
161EXPORT_SYMBOL(flexcop_pass_dmx_data);
162
163void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
164{
165	dvb_dmx_swfilter_packets(&fc->demux, buf, no);
166}
167EXPORT_SYMBOL(flexcop_pass_dmx_packets);
168
169static void flexcop_reset(struct flexcop_device *fc)
170{
171	flexcop_ibi_value v210,v204;
172
173/* reset the flexcop itself */
174	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
175
176	v210.raw = 0;
177	v210.sw_reset_210.reset_block_000 = 1;
178	v210.sw_reset_210.reset_block_100 = 1;
179	v210.sw_reset_210.reset_block_200 = 1;
180	v210.sw_reset_210.reset_block_300 = 1;
181	v210.sw_reset_210.reset_block_400 = 1;
182	v210.sw_reset_210.reset_block_500 = 1;
183	v210.sw_reset_210.reset_block_600 = 1;
184	v210.sw_reset_210.reset_block_700 = 1;
185	v210.sw_reset_210.Block_reset_enable = 0xb2;
186
187	v210.sw_reset_210.Special_controls = 0xc259;
188
189	fc->write_ibi_reg(fc,sw_reset_210,v210);
190	msleep(1);
191
192/* reset the periphical devices */
193
194	v204 = fc->read_ibi_reg(fc,misc_204);
195	v204.misc_204.Per_reset_sig = 0;
196	fc->write_ibi_reg(fc,misc_204,v204);
197	msleep(1);
198	v204.misc_204.Per_reset_sig = 1;
199	fc->write_ibi_reg(fc,misc_204,v204);
200}
201
202void flexcop_reset_block_300(struct flexcop_device *fc)
203{
204	flexcop_ibi_value v208_save = fc->read_ibi_reg(fc,ctrl_208),
205					  v210 = fc->read_ibi_reg(fc,sw_reset_210);
206
207	deb_rdump("208: %08x, 210: %08x\n",v208_save.raw,v210.raw);
208
209	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
210
211	v210.sw_reset_210.reset_block_300 = 1;
212	v210.sw_reset_210.Block_reset_enable = 0xb2;
213
214	fc->write_ibi_reg(fc,sw_reset_210,v210);
215	fc->write_ibi_reg(fc,ctrl_208,v208_save);
216}
217
218struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
219{
220	void *bus;
221	struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device), GFP_KERNEL);
222	if (!fc) {
223		err("no memory");
224		return NULL;
225	}
226
227	bus = kzalloc(bus_specific_len, GFP_KERNEL);
228	if (!bus) {
229		err("no memory");
230		kfree(fc);
231		return NULL;
232	}
233
234	fc->bus_specific = bus;
235
236	return fc;
237}
238EXPORT_SYMBOL(flexcop_device_kmalloc);
239
240void flexcop_device_kfree(struct flexcop_device *fc)
241{
242	kfree(fc->bus_specific);
243	kfree(fc);
244}
245EXPORT_SYMBOL(flexcop_device_kfree);
246
247int flexcop_device_initialize(struct flexcop_device *fc)
248{
249	int ret;
250	ibi_zero.raw = 0;
251
252	flexcop_reset(fc);
253	flexcop_determine_revision(fc);
254	flexcop_sram_init(fc);
255	flexcop_hw_filter_init(fc);
256
257	flexcop_smc_ctrl(fc, 0);
258
259	if ((ret = flexcop_dvb_init(fc)))
260		goto error;
261
262	/* i2c has to be done before doing EEProm stuff -
263	 * because the EEProm is accessed via i2c */
264	ret = flexcop_i2c_init(fc);
265	if (ret)
266		goto error;
267
268	/* do the MAC address reading after initializing the dvb_adapter */
269	if (fc->get_mac_addr(fc, 0) == 0) {
270		u8 *b = fc->dvb_adapter.proposed_mac;
271		info("MAC address = %pM", b);
272		flexcop_set_mac_filter(fc,b);
273		flexcop_mac_filter_ctrl(fc,1);
274	} else
275		warn("reading of MAC address failed.\n");
276
277	if ((ret = flexcop_frontend_init(fc)))
278		goto error;
279
280	flexcop_device_name(fc,"initialization of","complete");
281
282	return 0;
283
284error:
285	flexcop_device_exit(fc);
286	return ret;
287}
288EXPORT_SYMBOL(flexcop_device_initialize);
289
290void flexcop_device_exit(struct flexcop_device *fc)
291{
292	flexcop_frontend_exit(fc);
293	flexcop_i2c_exit(fc);
294	flexcop_dvb_exit(fc);
295}
296EXPORT_SYMBOL(flexcop_device_exit);
297
298static int flexcop_module_init(void)
299{
300	info(DRIVER_NAME " loaded successfully");
301	return 0;
302}
303
304static void flexcop_module_cleanup(void)
305{
306	info(DRIVER_NAME " unloaded successfully");
307}
308
309module_init(flexcop_module_init);
310module_exit(flexcop_module_cleanup);
311
312MODULE_AUTHOR(DRIVER_AUTHOR);
313MODULE_DESCRIPTION(DRIVER_NAME);
314MODULE_LICENSE("GPL");
315