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 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
125 err_connect_frontend:
126 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
127 err_dmx_add_mem_frontend:
128 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
129 err_dmx_add_hw_frontend:
130 dvb_dmxdev_release(&fc->dmxdev);
131 err_dmx_dev:
132 dvb_dmx_release(&fc->demux);
133 err_dmx:
134 dvb_unregister_adapter(&fc->dvb_adapter);
135 return ret;
136 }
137
flexcop_dvb_exit(struct flexcop_device * fc)138 static 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,
145 &fc->mem_frontend);
146 fc->demux.dmx.remove_frontend(&fc->demux.dmx,
147 &fc->hw_frontend);
148 dvb_dmxdev_release(&fc->dmxdev);
149 dvb_dmx_release(&fc->demux);
150 dvb_unregister_adapter(&fc->dvb_adapter);
151 deb_info("deinitialized dvb stuff\n");
152 }
153 fc->init_state &= ~FC_STATE_DVB_INIT;
154 }
155
156 /* these methods are necessary to achieve the long-term-goal of hiding the
157 * struct flexcop_device from the bus-parts */
flexcop_pass_dmx_data(struct flexcop_device * fc,u8 * buf,u32 len)158 void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
159 {
160 dvb_dmx_swfilter(&fc->demux, buf, len);
161 }
162 EXPORT_SYMBOL(flexcop_pass_dmx_data);
163
flexcop_pass_dmx_packets(struct flexcop_device * fc,u8 * buf,u32 no)164 void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
165 {
166 dvb_dmx_swfilter_packets(&fc->demux, buf, no);
167 }
168 EXPORT_SYMBOL(flexcop_pass_dmx_packets);
169
flexcop_reset(struct flexcop_device * fc)170 static void flexcop_reset(struct flexcop_device *fc)
171 {
172 flexcop_ibi_value v210, v204;
173
174 /* reset the flexcop itself */
175 fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
176
177 v210.raw = 0;
178 v210.sw_reset_210.reset_block_000 = 1;
179 v210.sw_reset_210.reset_block_100 = 1;
180 v210.sw_reset_210.reset_block_200 = 1;
181 v210.sw_reset_210.reset_block_300 = 1;
182 v210.sw_reset_210.reset_block_400 = 1;
183 v210.sw_reset_210.reset_block_500 = 1;
184 v210.sw_reset_210.reset_block_600 = 1;
185 v210.sw_reset_210.reset_block_700 = 1;
186 v210.sw_reset_210.Block_reset_enable = 0xb2;
187 v210.sw_reset_210.Special_controls = 0xc259;
188 fc->write_ibi_reg(fc,sw_reset_210,v210);
189 msleep(1);
190
191 /* reset the periphical devices */
192
193 v204 = fc->read_ibi_reg(fc,misc_204);
194 v204.misc_204.Per_reset_sig = 0;
195 fc->write_ibi_reg(fc,misc_204,v204);
196 msleep(1);
197 v204.misc_204.Per_reset_sig = 1;
198 fc->write_ibi_reg(fc,misc_204,v204);
199 }
200
flexcop_reset_block_300(struct flexcop_device * fc)201 void flexcop_reset_block_300(struct flexcop_device *fc)
202 {
203 flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208),
204 v210 = fc->read_ibi_reg(fc, sw_reset_210);
205
206 deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw);
207 fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
208
209 v210.sw_reset_210.reset_block_300 = 1;
210 v210.sw_reset_210.Block_reset_enable = 0xb2;
211
212 fc->write_ibi_reg(fc,sw_reset_210,v210);
213 fc->write_ibi_reg(fc,ctrl_208,v208_save);
214 }
215
flexcop_device_kmalloc(size_t bus_specific_len)216 struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
217 {
218 void *bus;
219 struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device),
220 GFP_KERNEL);
221 if (!fc) {
222 err("no memory");
223 return NULL;
224 }
225
226 bus = kzalloc(bus_specific_len, GFP_KERNEL);
227 if (!bus) {
228 err("no memory");
229 kfree(fc);
230 return NULL;
231 }
232
233 fc->bus_specific = bus;
234
235 return fc;
236 }
237 EXPORT_SYMBOL(flexcop_device_kmalloc);
238
flexcop_device_kfree(struct flexcop_device * fc)239 void flexcop_device_kfree(struct flexcop_device *fc)
240 {
241 kfree(fc->bus_specific);
242 kfree(fc);
243 }
244 EXPORT_SYMBOL(flexcop_device_kfree);
245
flexcop_device_initialize(struct flexcop_device * fc)246 int flexcop_device_initialize(struct flexcop_device *fc)
247 {
248 int ret;
249 ibi_zero.raw = 0;
250
251 flexcop_reset(fc);
252 flexcop_determine_revision(fc);
253 flexcop_sram_init(fc);
254 flexcop_hw_filter_init(fc);
255 flexcop_smc_ctrl(fc, 0);
256
257 if ((ret = flexcop_dvb_init(fc)))
258 goto error;
259
260 /* i2c has to be done before doing EEProm stuff -
261 * because the EEProm is accessed via i2c */
262 ret = flexcop_i2c_init(fc);
263 if (ret)
264 goto error;
265
266 /* do the MAC address reading after initializing the dvb_adapter */
267 if (fc->get_mac_addr(fc, 0) == 0) {
268 u8 *b = fc->dvb_adapter.proposed_mac;
269 info("MAC address = %pM", b);
270 flexcop_set_mac_filter(fc,b);
271 flexcop_mac_filter_ctrl(fc,1);
272 } else
273 warn("reading of MAC address failed.\n");
274
275 if ((ret = flexcop_frontend_init(fc)))
276 goto error;
277
278 flexcop_device_name(fc,"initialization of","complete");
279 return 0;
280
281 error:
282 flexcop_device_exit(fc);
283 return ret;
284 }
285 EXPORT_SYMBOL(flexcop_device_initialize);
286
flexcop_device_exit(struct flexcop_device * fc)287 void flexcop_device_exit(struct flexcop_device *fc)
288 {
289 flexcop_frontend_exit(fc);
290 flexcop_i2c_exit(fc);
291 flexcop_dvb_exit(fc);
292 }
293 EXPORT_SYMBOL(flexcop_device_exit);
294
flexcop_module_init(void)295 static int flexcop_module_init(void)
296 {
297 info(DRIVER_NAME " loaded successfully");
298 return 0;
299 }
300
flexcop_module_cleanup(void)301 static void flexcop_module_cleanup(void)
302 {
303 info(DRIVER_NAME " unloaded successfully");
304 }
305
306 module_init(flexcop_module_init);
307 module_exit(flexcop_module_cleanup);
308
309 MODULE_AUTHOR(DRIVER_AUTHOR);
310 MODULE_DESCRIPTION(DRIVER_NAME);
311 MODULE_LICENSE("GPL");
312