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@posteo.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
30 #include "flexcop.h"
31
32 #define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip"
33 #define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@posteo.de"
34
35 #ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
36 #define DEBSTATUS ""
37 #else
38 #define DEBSTATUS " (debugging is not enabled)"
39 #endif
40
41 int b2c2_flexcop_debug;
42 EXPORT_SYMBOL_GPL(b2c2_flexcop_debug);
43 module_param_named(debug, b2c2_flexcop_debug, int, 0644);
44 MODULE_PARM_DESC(debug,
45 "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram,32=reg,64=i2cdump (|-able))."
46 DEBSTATUS);
47 #undef DEBSTATUS
48
49 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
50
51 /* global zero for ibi values */
52 flexcop_ibi_value ibi_zero;
53
flexcop_dvb_start_feed(struct dvb_demux_feed * dvbdmxfeed)54 static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
55 {
56 struct flexcop_device *fc = dvbdmxfeed->demux->priv;
57 return flexcop_pid_feed_control(fc, dvbdmxfeed, 1);
58 }
59
flexcop_dvb_stop_feed(struct dvb_demux_feed * dvbdmxfeed)60 static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
61 {
62 struct flexcop_device *fc = dvbdmxfeed->demux->priv;
63 return flexcop_pid_feed_control(fc, dvbdmxfeed, 0);
64 }
65
flexcop_dvb_init(struct flexcop_device * fc)66 static int flexcop_dvb_init(struct flexcop_device *fc)
67 {
68 int ret = dvb_register_adapter(&fc->dvb_adapter,
69 "FlexCop Digital TV device", fc->owner,
70 fc->dev, adapter_nr);
71 if (ret < 0) {
72 err("error registering DVB adapter");
73 return ret;
74 }
75 fc->dvb_adapter.priv = fc;
76
77 fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING
78 | DMX_MEMORY_BASED_FILTERING);
79 fc->demux.priv = fc;
80 fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
81 fc->demux.start_feed = flexcop_dvb_start_feed;
82 fc->demux.stop_feed = flexcop_dvb_stop_feed;
83 fc->demux.write_to_decoder = NULL;
84
85 ret = dvb_dmx_init(&fc->demux);
86 if (ret < 0) {
87 err("dvb_dmx failed: error %d", ret);
88 goto err_dmx;
89 }
90
91 fc->hw_frontend.source = DMX_FRONTEND_0;
92
93 fc->dmxdev.filternum = fc->demux.feednum;
94 fc->dmxdev.demux = &fc->demux.dmx;
95 fc->dmxdev.capabilities = 0;
96 ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter);
97 if (ret < 0) {
98 err("dvb_dmxdev_init failed: error %d", ret);
99 goto err_dmx_dev;
100 }
101
102 ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend);
103 if (ret < 0) {
104 err("adding hw_frontend to dmx failed: error %d", ret);
105 goto err_dmx_add_hw_frontend;
106 }
107
108 fc->mem_frontend.source = DMX_MEMORY_FE;
109 ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend);
110 if (ret < 0) {
111 err("adding mem_frontend to dmx failed: error %d", ret);
112 goto err_dmx_add_mem_frontend;
113 }
114
115 ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend);
116 if (ret < 0) {
117 err("connect frontend failed: error %d", ret);
118 goto err_connect_frontend;
119 }
120
121 ret = dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
122 if (ret < 0) {
123 err("dvb_net_init failed: error %d", ret);
124 goto err_net;
125 }
126
127 fc->init_state |= FC_STATE_DVB_INIT;
128 return 0;
129
130 err_net:
131 fc->demux.dmx.disconnect_frontend(&fc->demux.dmx);
132 err_connect_frontend:
133 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
134 err_dmx_add_mem_frontend:
135 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
136 err_dmx_add_hw_frontend:
137 dvb_dmxdev_release(&fc->dmxdev);
138 err_dmx_dev:
139 dvb_dmx_release(&fc->demux);
140 err_dmx:
141 dvb_unregister_adapter(&fc->dvb_adapter);
142 return ret;
143 }
144
flexcop_dvb_exit(struct flexcop_device * fc)145 static void flexcop_dvb_exit(struct flexcop_device *fc)
146 {
147 if (fc->init_state & FC_STATE_DVB_INIT) {
148 dvb_net_release(&fc->dvbnet);
149
150 fc->demux.dmx.close(&fc->demux.dmx);
151 fc->demux.dmx.remove_frontend(&fc->demux.dmx,
152 &fc->mem_frontend);
153 fc->demux.dmx.remove_frontend(&fc->demux.dmx,
154 &fc->hw_frontend);
155 dvb_dmxdev_release(&fc->dmxdev);
156 dvb_dmx_release(&fc->demux);
157 dvb_unregister_adapter(&fc->dvb_adapter);
158 deb_info("deinitialized dvb stuff\n");
159 }
160 fc->init_state &= ~FC_STATE_DVB_INIT;
161 }
162
163 /* these methods are necessary to achieve the long-term-goal of hiding the
164 * struct flexcop_device from the bus-parts */
flexcop_pass_dmx_data(struct flexcop_device * fc,u8 * buf,u32 len)165 void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
166 {
167 dvb_dmx_swfilter(&fc->demux, buf, len);
168 }
169 EXPORT_SYMBOL(flexcop_pass_dmx_data);
170
flexcop_pass_dmx_packets(struct flexcop_device * fc,u8 * buf,u32 no)171 void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
172 {
173 dvb_dmx_swfilter_packets(&fc->demux, buf, no);
174 }
175 EXPORT_SYMBOL(flexcop_pass_dmx_packets);
176
flexcop_reset(struct flexcop_device * fc)177 static void flexcop_reset(struct flexcop_device *fc)
178 {
179 flexcop_ibi_value v210, v204;
180
181 /* reset the flexcop itself */
182 fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
183
184 v210.raw = 0;
185 v210.sw_reset_210.reset_block_000 = 1;
186 v210.sw_reset_210.reset_block_100 = 1;
187 v210.sw_reset_210.reset_block_200 = 1;
188 v210.sw_reset_210.reset_block_300 = 1;
189 v210.sw_reset_210.reset_block_400 = 1;
190 v210.sw_reset_210.reset_block_500 = 1;
191 v210.sw_reset_210.reset_block_600 = 1;
192 v210.sw_reset_210.reset_block_700 = 1;
193 v210.sw_reset_210.Block_reset_enable = 0xb2;
194 v210.sw_reset_210.Special_controls = 0xc259;
195 fc->write_ibi_reg(fc,sw_reset_210,v210);
196 msleep(1);
197
198 /* reset the periphical devices */
199
200 v204 = fc->read_ibi_reg(fc,misc_204);
201 v204.misc_204.Per_reset_sig = 0;
202 fc->write_ibi_reg(fc,misc_204,v204);
203 msleep(1);
204 v204.misc_204.Per_reset_sig = 1;
205 fc->write_ibi_reg(fc,misc_204,v204);
206 }
207
flexcop_reset_block_300(struct flexcop_device * fc)208 void flexcop_reset_block_300(struct flexcop_device *fc)
209 {
210 flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208),
211 v210 = fc->read_ibi_reg(fc, sw_reset_210);
212
213 deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw);
214 fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
215
216 v210.sw_reset_210.reset_block_300 = 1;
217 v210.sw_reset_210.Block_reset_enable = 0xb2;
218
219 fc->write_ibi_reg(fc,sw_reset_210,v210);
220 fc->write_ibi_reg(fc,ctrl_208,v208_save);
221 }
222
flexcop_device_kmalloc(size_t bus_specific_len)223 struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
224 {
225 void *bus;
226 struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device),
227 GFP_KERNEL);
228 if (!fc) {
229 err("no memory");
230 return NULL;
231 }
232
233 bus = kzalloc(bus_specific_len, GFP_KERNEL);
234 if (!bus) {
235 err("no memory");
236 kfree(fc);
237 return NULL;
238 }
239
240 fc->bus_specific = bus;
241
242 return fc;
243 }
244 EXPORT_SYMBOL(flexcop_device_kmalloc);
245
flexcop_device_kfree(struct flexcop_device * fc)246 void flexcop_device_kfree(struct flexcop_device *fc)
247 {
248 kfree(fc->bus_specific);
249 kfree(fc);
250 }
251 EXPORT_SYMBOL(flexcop_device_kfree);
252
flexcop_device_initialize(struct flexcop_device * fc)253 int flexcop_device_initialize(struct flexcop_device *fc)
254 {
255 int ret;
256 ibi_zero.raw = 0;
257
258 flexcop_reset(fc);
259 flexcop_determine_revision(fc);
260 flexcop_sram_init(fc);
261 flexcop_hw_filter_init(fc);
262 flexcop_smc_ctrl(fc, 0);
263
264 ret = flexcop_dvb_init(fc);
265 if (ret)
266 goto error;
267
268 /* i2c has to be done before doing EEProm stuff -
269 * because the EEProm is accessed via i2c */
270 ret = flexcop_i2c_init(fc);
271 if (ret)
272 goto error;
273
274 /* do the MAC address reading after initializing the dvb_adapter */
275 if (fc->get_mac_addr(fc, 0) == 0) {
276 u8 *b = fc->dvb_adapter.proposed_mac;
277 info("MAC address = %pM", b);
278 flexcop_set_mac_filter(fc,b);
279 flexcop_mac_filter_ctrl(fc,1);
280 } else
281 warn("reading of MAC address failed.\n");
282
283 ret = flexcop_frontend_init(fc);
284 if (ret)
285 goto error;
286
287 flexcop_device_name(fc,"initialization of","complete");
288 return 0;
289
290 error:
291 flexcop_device_exit(fc);
292 return ret;
293 }
294 EXPORT_SYMBOL(flexcop_device_initialize);
295
flexcop_device_exit(struct flexcop_device * fc)296 void flexcop_device_exit(struct flexcop_device *fc)
297 {
298 flexcop_frontend_exit(fc);
299 flexcop_i2c_exit(fc);
300 flexcop_dvb_exit(fc);
301 }
302 EXPORT_SYMBOL(flexcop_device_exit);
303
flexcop_module_init(void)304 static int flexcop_module_init(void)
305 {
306 info(DRIVER_NAME " loaded successfully");
307 return 0;
308 }
309
flexcop_module_cleanup(void)310 static void flexcop_module_cleanup(void)
311 {
312 info(DRIVER_NAME " unloaded successfully");
313 }
314
315 module_init(flexcop_module_init);
316 module_exit(flexcop_module_cleanup);
317
318 MODULE_AUTHOR(DRIVER_AUTHOR);
319 MODULE_DESCRIPTION(DRIVER_NAME);
320 MODULE_LICENSE("GPL");
321