1 // SPDX-License-Identifier: LGPL-2.1-or-later
2 /*
3 * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
4 * flexcop.c - main module part
5 * Copyright (C) 2004-9 Patrick Boettcher <patrick.boettcher@posteo.de>
6 * based on skystar2-driver Copyright (C) 2003 Vadim Catana, skystar@moldova.cc
7 *
8 * Acknowledgements:
9 * John Jurrius from BBTI, Inc. for extensive support
10 * with code examples and data books
11 * Bjarne Steinsbo, bjarne at steinsbo.com (some ideas for rewriting)
12 *
13 * Contributions to the skystar2-driver have been done by
14 * Vincenzo Di Massa, hawk.it at tiscalinet.it (several DiSEqC fixes)
15 * Roberto Ragusa, r.ragusa at libero.it (polishing, restyling the code)
16 * Uwe Bugla, uwe.bugla at gmx.de (doing tests, restyling code, writing docu)
17 * Niklas Peinecke, peinecke at gdv.uni-hannover.de (hardware pid/mac
18 * filtering)
19 */
20
21 #include "flexcop.h"
22
23 #define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip"
24 #define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@posteo.de"
25
26 #ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
27 #define DEBSTATUS ""
28 #else
29 #define DEBSTATUS " (debugging is not enabled)"
30 #endif
31
32 int b2c2_flexcop_debug;
33 EXPORT_SYMBOL_GPL(b2c2_flexcop_debug);
34 module_param_named(debug, b2c2_flexcop_debug, int, 0644);
35 MODULE_PARM_DESC(debug,
36 "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram,32=reg,64=i2cdump (|-able))."
37 DEBSTATUS);
38 #undef DEBSTATUS
39
40 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
41
42 /* global zero for ibi values */
43 flexcop_ibi_value ibi_zero;
44
flexcop_dvb_start_feed(struct dvb_demux_feed * dvbdmxfeed)45 static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
46 {
47 struct flexcop_device *fc = dvbdmxfeed->demux->priv;
48 return flexcop_pid_feed_control(fc, dvbdmxfeed, 1);
49 }
50
flexcop_dvb_stop_feed(struct dvb_demux_feed * dvbdmxfeed)51 static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
52 {
53 struct flexcop_device *fc = dvbdmxfeed->demux->priv;
54 return flexcop_pid_feed_control(fc, dvbdmxfeed, 0);
55 }
56
flexcop_dvb_init(struct flexcop_device * fc)57 static int flexcop_dvb_init(struct flexcop_device *fc)
58 {
59 int ret = dvb_register_adapter(&fc->dvb_adapter,
60 "FlexCop Digital TV device", fc->owner,
61 fc->dev, adapter_nr);
62 if (ret < 0) {
63 err("error registering DVB adapter");
64 return ret;
65 }
66 fc->dvb_adapter.priv = fc;
67
68 fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING
69 | DMX_MEMORY_BASED_FILTERING);
70 fc->demux.priv = fc;
71 fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
72 fc->demux.start_feed = flexcop_dvb_start_feed;
73 fc->demux.stop_feed = flexcop_dvb_stop_feed;
74 fc->demux.write_to_decoder = NULL;
75
76 ret = dvb_dmx_init(&fc->demux);
77 if (ret < 0) {
78 err("dvb_dmx failed: error %d", ret);
79 goto err_dmx;
80 }
81
82 fc->hw_frontend.source = DMX_FRONTEND_0;
83
84 fc->dmxdev.filternum = fc->demux.feednum;
85 fc->dmxdev.demux = &fc->demux.dmx;
86 fc->dmxdev.capabilities = 0;
87 ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter);
88 if (ret < 0) {
89 err("dvb_dmxdev_init failed: error %d", ret);
90 goto err_dmx_dev;
91 }
92
93 ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend);
94 if (ret < 0) {
95 err("adding hw_frontend to dmx failed: error %d", ret);
96 goto err_dmx_add_hw_frontend;
97 }
98
99 fc->mem_frontend.source = DMX_MEMORY_FE;
100 ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend);
101 if (ret < 0) {
102 err("adding mem_frontend to dmx failed: error %d", ret);
103 goto err_dmx_add_mem_frontend;
104 }
105
106 ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend);
107 if (ret < 0) {
108 err("connect frontend failed: error %d", ret);
109 goto err_connect_frontend;
110 }
111
112 ret = dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
113 if (ret < 0) {
114 err("dvb_net_init failed: error %d", ret);
115 goto err_net;
116 }
117
118 fc->init_state |= FC_STATE_DVB_INIT;
119 return 0;
120
121 err_net:
122 fc->demux.dmx.disconnect_frontend(&fc->demux.dmx);
123 err_connect_frontend:
124 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
125 err_dmx_add_mem_frontend:
126 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
127 err_dmx_add_hw_frontend:
128 dvb_dmxdev_release(&fc->dmxdev);
129 err_dmx_dev:
130 dvb_dmx_release(&fc->demux);
131 err_dmx:
132 dvb_unregister_adapter(&fc->dvb_adapter);
133 return ret;
134 }
135
flexcop_dvb_exit(struct flexcop_device * fc)136 static void flexcop_dvb_exit(struct flexcop_device *fc)
137 {
138 if (fc->init_state & FC_STATE_DVB_INIT) {
139 dvb_net_release(&fc->dvbnet);
140
141 fc->demux.dmx.close(&fc->demux.dmx);
142 fc->demux.dmx.remove_frontend(&fc->demux.dmx,
143 &fc->mem_frontend);
144 fc->demux.dmx.remove_frontend(&fc->demux.dmx,
145 &fc->hw_frontend);
146 dvb_dmxdev_release(&fc->dmxdev);
147 dvb_dmx_release(&fc->demux);
148 dvb_unregister_adapter(&fc->dvb_adapter);
149 deb_info("deinitialized dvb stuff\n");
150 }
151 fc->init_state &= ~FC_STATE_DVB_INIT;
152 }
153
154 /* these methods are necessary to achieve the long-term-goal of hiding the
155 * struct flexcop_device from the bus-parts */
flexcop_pass_dmx_data(struct flexcop_device * fc,u8 * buf,u32 len)156 void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
157 {
158 dvb_dmx_swfilter(&fc->demux, buf, len);
159 }
160 EXPORT_SYMBOL(flexcop_pass_dmx_data);
161
flexcop_pass_dmx_packets(struct flexcop_device * fc,u8 * buf,u32 no)162 void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
163 {
164 dvb_dmx_swfilter_packets(&fc->demux, buf, no);
165 }
166 EXPORT_SYMBOL(flexcop_pass_dmx_packets);
167
flexcop_reset(struct flexcop_device * fc)168 static void flexcop_reset(struct flexcop_device *fc)
169 {
170 flexcop_ibi_value v210, v204;
171
172 /* reset the flexcop itself */
173 fc->write_ibi_reg(fc, ctrl_208, ibi_zero);
174
175 v210.raw = 0;
176 v210.sw_reset_210.reset_block_000 = 1;
177 v210.sw_reset_210.reset_block_100 = 1;
178 v210.sw_reset_210.reset_block_200 = 1;
179 v210.sw_reset_210.reset_block_300 = 1;
180 v210.sw_reset_210.reset_block_400 = 1;
181 v210.sw_reset_210.reset_block_500 = 1;
182 v210.sw_reset_210.reset_block_600 = 1;
183 v210.sw_reset_210.reset_block_700 = 1;
184 v210.sw_reset_210.Block_reset_enable = 0xb2;
185 v210.sw_reset_210.Special_controls = 0xc259;
186 fc->write_ibi_reg(fc, sw_reset_210, v210);
187 msleep(1);
188
189 /* reset the periphical devices */
190
191 v204 = fc->read_ibi_reg(fc, misc_204);
192 v204.misc_204.Per_reset_sig = 0;
193 fc->write_ibi_reg(fc, misc_204, v204);
194 msleep(1);
195 v204.misc_204.Per_reset_sig = 1;
196 fc->write_ibi_reg(fc, misc_204, v204);
197 }
198
flexcop_reset_block_300(struct flexcop_device * fc)199 void flexcop_reset_block_300(struct flexcop_device *fc)
200 {
201 flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208),
202 v210 = fc->read_ibi_reg(fc, sw_reset_210);
203
204 deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw);
205 fc->write_ibi_reg(fc, ctrl_208, ibi_zero);
206
207 v210.sw_reset_210.reset_block_300 = 1;
208 v210.sw_reset_210.Block_reset_enable = 0xb2;
209
210 fc->write_ibi_reg(fc, sw_reset_210, v210);
211 fc->write_ibi_reg(fc, ctrl_208, v208_save);
212 }
213
flexcop_device_kmalloc(size_t bus_specific_len)214 struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
215 {
216 void *bus;
217 struct flexcop_device *fc = kzalloc_obj(struct flexcop_device);
218 if (!fc) {
219 err("no memory");
220 return NULL;
221 }
222
223 bus = kzalloc(bus_specific_len, GFP_KERNEL);
224 if (!bus) {
225 err("no memory");
226 kfree(fc);
227 return NULL;
228 }
229
230 fc->bus_specific = bus;
231
232 return fc;
233 }
234 EXPORT_SYMBOL(flexcop_device_kmalloc);
235
flexcop_device_kfree(struct flexcop_device * fc)236 void flexcop_device_kfree(struct flexcop_device *fc)
237 {
238 kfree(fc->bus_specific);
239 kfree(fc);
240 }
241 EXPORT_SYMBOL(flexcop_device_kfree);
242
flexcop_device_initialize(struct flexcop_device * fc)243 int flexcop_device_initialize(struct flexcop_device *fc)
244 {
245 int ret;
246 ibi_zero.raw = 0;
247
248 flexcop_reset(fc);
249 flexcop_determine_revision(fc);
250 flexcop_sram_init(fc);
251 flexcop_hw_filter_init(fc);
252 flexcop_smc_ctrl(fc, 0);
253
254 ret = flexcop_dvb_init(fc);
255 if (ret)
256 goto error;
257
258 /* i2c has to be done before doing EEProm stuff -
259 * because the EEProm is accessed via i2c */
260 ret = flexcop_i2c_init(fc);
261 if (ret)
262 goto error;
263
264 /* do the MAC address reading after initializing the dvb_adapter */
265 if (fc->get_mac_addr(fc, 0) == 0) {
266 u8 *b = fc->dvb_adapter.proposed_mac;
267 info("MAC address = %pM", b);
268 flexcop_set_mac_filter(fc, b);
269 flexcop_mac_filter_ctrl(fc, 1);
270 } else
271 warn("reading of MAC address failed.\n");
272
273 ret = flexcop_frontend_init(fc);
274 if (ret)
275 goto error;
276
277 flexcop_device_name(fc, "initialization of", "complete");
278 return 0;
279
280 error:
281 flexcop_device_exit(fc);
282 return ret;
283 }
284 EXPORT_SYMBOL(flexcop_device_initialize);
285
flexcop_device_exit(struct flexcop_device * fc)286 void flexcop_device_exit(struct flexcop_device *fc)
287 {
288 flexcop_frontend_exit(fc);
289 flexcop_i2c_exit(fc);
290 flexcop_dvb_exit(fc);
291 }
292 EXPORT_SYMBOL(flexcop_device_exit);
293
flexcop_module_init(void)294 static int flexcop_module_init(void)
295 {
296 info(DRIVER_NAME " loaded successfully");
297 return 0;
298 }
299
flexcop_module_cleanup(void)300 static void flexcop_module_cleanup(void)
301 {
302 info(DRIVER_NAME " unloaded successfully");
303 }
304
305 module_init(flexcop_module_init);
306 module_exit(flexcop_module_cleanup);
307
308 MODULE_AUTHOR(DRIVER_AUTHOR);
309 MODULE_DESCRIPTION(DRIVER_NAME);
310 MODULE_LICENSE("GPL");
311