1 /*
2 * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
3 * flexcop.c - main module part
4 * Copyright (C) 2004-9 Patrick Boettcher <patrick.boettcher@desy.de>
5 * based on skystar2-driver Copyright (C) 2003 Vadim Catana, skystar@moldova.cc
6 *
7 * Acknowledgements:
8 * John Jurrius from BBTI, Inc. for extensive support
9 * with code examples and data books
10 * Bjarne Steinsbo, bjarne at steinsbo.com (some ideas for rewriting)
11 *
12 * Contributions to the skystar2-driver have been done by
13 * Vincenzo Di Massa, hawk.it at tiscalinet.it (several DiSEqC fixes)
14 * Roberto Ragusa, r.ragusa at libero.it (polishing, restyling the code)
15 * Uwe Bugla, uwe.bugla at gmx.de (doing tests, restyling code, writing docu)
16 * Niklas Peinecke, peinecke at gdv.uni-hannover.de (hardware pid/mac
17 * filtering)
18 *
19 * This program is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU Lesser General Public License
21 * as published by the Free Software Foundation; either version 2.1
22 * of the License, or (at your option) any later version.
23 *
24 * This program is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
28 *
29 * You should have received a copy of the GNU Lesser General Public License
30 * along with this program; if not, write to the Free Software
31 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
32 */
33
34 #include "flexcop.h"
35
36 #define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip"
37 #define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de"
38
39 #ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
40 #define DEBSTATUS ""
41 #else
42 #define DEBSTATUS " (debugging is not enabled)"
43 #endif
44
45 int b2c2_flexcop_debug;
46 module_param_named(debug, b2c2_flexcop_debug, int, 0644);
47 MODULE_PARM_DESC(debug,
48 "set debug level (1=info,2=tuner,4=i2c,8=ts,"
49 "16=sram,32=reg (|-able))."
50 DEBSTATUS);
51 #undef DEBSTATUS
52
53 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
54
55 /* global zero for ibi values */
56 flexcop_ibi_value ibi_zero;
57
flexcop_dvb_start_feed(struct dvb_demux_feed * dvbdmxfeed)58 static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
59 {
60 struct flexcop_device *fc = dvbdmxfeed->demux->priv;
61 return flexcop_pid_feed_control(fc, dvbdmxfeed, 1);
62 }
63
flexcop_dvb_stop_feed(struct dvb_demux_feed * dvbdmxfeed)64 static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
65 {
66 struct flexcop_device *fc = dvbdmxfeed->demux->priv;
67 return flexcop_pid_feed_control(fc, dvbdmxfeed, 0);
68 }
69
flexcop_dvb_init(struct flexcop_device * fc)70 static int flexcop_dvb_init(struct flexcop_device *fc)
71 {
72 int ret = dvb_register_adapter(&fc->dvb_adapter,
73 "FlexCop Digital TV device", fc->owner,
74 fc->dev, adapter_nr);
75 if (ret < 0) {
76 err("error registering DVB adapter");
77 return ret;
78 }
79 fc->dvb_adapter.priv = fc;
80
81 fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING
82 | DMX_MEMORY_BASED_FILTERING);
83 fc->demux.priv = fc;
84 fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
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 ret = dvb_dmx_init(&fc->demux);
90 if (ret < 0) {
91 err("dvb_dmx failed: error %d", ret);
92 goto err_dmx;
93 }
94
95 fc->hw_frontend.source = DMX_FRONTEND_0;
96
97 fc->dmxdev.filternum = fc->demux.feednum;
98 fc->dmxdev.demux = &fc->demux.dmx;
99 fc->dmxdev.capabilities = 0;
100 ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter);
101 if (ret < 0) {
102 err("dvb_dmxdev_init failed: error %d", ret);
103 goto err_dmx_dev;
104 }
105
106 ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend);
107 if (ret < 0) {
108 err("adding hw_frontend to dmx failed: error %d", ret);
109 goto err_dmx_add_hw_frontend;
110 }
111
112 fc->mem_frontend.source = DMX_MEMORY_FE;
113 ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend);
114 if (ret < 0) {
115 err("adding mem_frontend to dmx failed: error %d", ret);
116 goto err_dmx_add_mem_frontend;
117 }
118
119 ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend);
120 if (ret < 0) {
121 err("connect frontend failed: error %d", ret);
122 goto err_connect_frontend;
123 }
124
125 ret = dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
126 if (ret < 0) {
127 err("dvb_net_init failed: error %d", ret);
128 goto err_net;
129 }
130
131 fc->init_state |= FC_STATE_DVB_INIT;
132 return 0;
133
134 err_net:
135 fc->demux.dmx.disconnect_frontend(&fc->demux.dmx);
136 err_connect_frontend:
137 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
138 err_dmx_add_mem_frontend:
139 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
140 err_dmx_add_hw_frontend:
141 dvb_dmxdev_release(&fc->dmxdev);
142 err_dmx_dev:
143 dvb_dmx_release(&fc->demux);
144 err_dmx:
145 dvb_unregister_adapter(&fc->dvb_adapter);
146 return ret;
147 }
148
flexcop_dvb_exit(struct flexcop_device * fc)149 static void flexcop_dvb_exit(struct flexcop_device *fc)
150 {
151 if (fc->init_state & FC_STATE_DVB_INIT) {
152 dvb_net_release(&fc->dvbnet);
153
154 fc->demux.dmx.close(&fc->demux.dmx);
155 fc->demux.dmx.remove_frontend(&fc->demux.dmx,
156 &fc->mem_frontend);
157 fc->demux.dmx.remove_frontend(&fc->demux.dmx,
158 &fc->hw_frontend);
159 dvb_dmxdev_release(&fc->dmxdev);
160 dvb_dmx_release(&fc->demux);
161 dvb_unregister_adapter(&fc->dvb_adapter);
162 deb_info("deinitialized dvb stuff\n");
163 }
164 fc->init_state &= ~FC_STATE_DVB_INIT;
165 }
166
167 /* these methods are necessary to achieve the long-term-goal of hiding the
168 * struct flexcop_device from the bus-parts */
flexcop_pass_dmx_data(struct flexcop_device * fc,u8 * buf,u32 len)169 void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
170 {
171 dvb_dmx_swfilter(&fc->demux, buf, len);
172 }
173 EXPORT_SYMBOL(flexcop_pass_dmx_data);
174
flexcop_pass_dmx_packets(struct flexcop_device * fc,u8 * buf,u32 no)175 void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
176 {
177 dvb_dmx_swfilter_packets(&fc->demux, buf, no);
178 }
179 EXPORT_SYMBOL(flexcop_pass_dmx_packets);
180
flexcop_reset(struct flexcop_device * fc)181 static void flexcop_reset(struct flexcop_device *fc)
182 {
183 flexcop_ibi_value v210, v204;
184
185 /* reset the flexcop itself */
186 fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
187
188 v210.raw = 0;
189 v210.sw_reset_210.reset_block_000 = 1;
190 v210.sw_reset_210.reset_block_100 = 1;
191 v210.sw_reset_210.reset_block_200 = 1;
192 v210.sw_reset_210.reset_block_300 = 1;
193 v210.sw_reset_210.reset_block_400 = 1;
194 v210.sw_reset_210.reset_block_500 = 1;
195 v210.sw_reset_210.reset_block_600 = 1;
196 v210.sw_reset_210.reset_block_700 = 1;
197 v210.sw_reset_210.Block_reset_enable = 0xb2;
198 v210.sw_reset_210.Special_controls = 0xc259;
199 fc->write_ibi_reg(fc,sw_reset_210,v210);
200 msleep(1);
201
202 /* reset the periphical devices */
203
204 v204 = fc->read_ibi_reg(fc,misc_204);
205 v204.misc_204.Per_reset_sig = 0;
206 fc->write_ibi_reg(fc,misc_204,v204);
207 msleep(1);
208 v204.misc_204.Per_reset_sig = 1;
209 fc->write_ibi_reg(fc,misc_204,v204);
210 }
211
flexcop_reset_block_300(struct flexcop_device * fc)212 void flexcop_reset_block_300(struct flexcop_device *fc)
213 {
214 flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208),
215 v210 = fc->read_ibi_reg(fc, sw_reset_210);
216
217 deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw);
218 fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
219
220 v210.sw_reset_210.reset_block_300 = 1;
221 v210.sw_reset_210.Block_reset_enable = 0xb2;
222
223 fc->write_ibi_reg(fc,sw_reset_210,v210);
224 fc->write_ibi_reg(fc,ctrl_208,v208_save);
225 }
226
flexcop_device_kmalloc(size_t bus_specific_len)227 struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
228 {
229 void *bus;
230 struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device),
231 GFP_KERNEL);
232 if (!fc) {
233 err("no memory");
234 return NULL;
235 }
236
237 bus = kzalloc(bus_specific_len, GFP_KERNEL);
238 if (!bus) {
239 err("no memory");
240 kfree(fc);
241 return NULL;
242 }
243
244 fc->bus_specific = bus;
245
246 return fc;
247 }
248 EXPORT_SYMBOL(flexcop_device_kmalloc);
249
flexcop_device_kfree(struct flexcop_device * fc)250 void flexcop_device_kfree(struct flexcop_device *fc)
251 {
252 kfree(fc->bus_specific);
253 kfree(fc);
254 }
255 EXPORT_SYMBOL(flexcop_device_kfree);
256
flexcop_device_initialize(struct flexcop_device * fc)257 int flexcop_device_initialize(struct flexcop_device *fc)
258 {
259 int ret;
260 ibi_zero.raw = 0;
261
262 flexcop_reset(fc);
263 flexcop_determine_revision(fc);
264 flexcop_sram_init(fc);
265 flexcop_hw_filter_init(fc);
266 flexcop_smc_ctrl(fc, 0);
267
268 ret = flexcop_dvb_init(fc);
269 if (ret)
270 goto error;
271
272 /* i2c has to be done before doing EEProm stuff -
273 * because the EEProm is accessed via i2c */
274 ret = flexcop_i2c_init(fc);
275 if (ret)
276 goto error;
277
278 /* do the MAC address reading after initializing the dvb_adapter */
279 if (fc->get_mac_addr(fc, 0) == 0) {
280 u8 *b = fc->dvb_adapter.proposed_mac;
281 info("MAC address = %pM", b);
282 flexcop_set_mac_filter(fc,b);
283 flexcop_mac_filter_ctrl(fc,1);
284 } else
285 warn("reading of MAC address failed.\n");
286
287 ret = flexcop_frontend_init(fc);
288 if (ret)
289 goto error;
290
291 flexcop_device_name(fc,"initialization of","complete");
292 return 0;
293
294 error:
295 flexcop_device_exit(fc);
296 return ret;
297 }
298 EXPORT_SYMBOL(flexcop_device_initialize);
299
flexcop_device_exit(struct flexcop_device * fc)300 void flexcop_device_exit(struct flexcop_device *fc)
301 {
302 flexcop_frontend_exit(fc);
303 flexcop_i2c_exit(fc);
304 flexcop_dvb_exit(fc);
305 }
306 EXPORT_SYMBOL(flexcop_device_exit);
307
flexcop_module_init(void)308 static int flexcop_module_init(void)
309 {
310 info(DRIVER_NAME " loaded successfully");
311 return 0;
312 }
313
flexcop_module_cleanup(void)314 static void flexcop_module_cleanup(void)
315 {
316 info(DRIVER_NAME " unloaded successfully");
317 }
318
319 module_init(flexcop_module_init);
320 module_exit(flexcop_module_cleanup);
321
322 MODULE_AUTHOR(DRIVER_AUTHOR);
323 MODULE_DESCRIPTION(DRIVER_NAME);
324 MODULE_LICENSE("GPL");
325