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 | |
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, onoff: 1); |
49 | } |
50 | |
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, onoff: 0); |
55 | } |
56 | |
57 | static int flexcop_dvb_init(struct flexcop_device *fc) |
58 | { |
59 | int ret = dvb_register_adapter(adap: &fc->dvb_adapter, |
60 | name: "FlexCop Digital TV device" , module: fc->owner, |
61 | device: fc->dev, adapter_nums: 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(demux: &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(dmxdev: &fc->dmxdev, adap: &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(adap: &fc->dvb_adapter, dvbnet: &fc->dvbnet, dmxdemux: &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(dmxdev: &fc->dmxdev); |
129 | err_dmx_dev: |
130 | dvb_dmx_release(demux: &fc->demux); |
131 | err_dmx: |
132 | dvb_unregister_adapter(adap: &fc->dvb_adapter); |
133 | return ret; |
134 | } |
135 | |
136 | static void flexcop_dvb_exit(struct flexcop_device *fc) |
137 | { |
138 | if (fc->init_state & FC_STATE_DVB_INIT) { |
139 | dvb_net_release(dvbnet: &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(dmxdev: &fc->dmxdev); |
147 | dvb_dmx_release(demux: &fc->demux); |
148 | dvb_unregister_adapter(adap: &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 */ |
156 | void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len) |
157 | { |
158 | dvb_dmx_swfilter(demux: &fc->demux, buf, count: len); |
159 | } |
160 | EXPORT_SYMBOL(flexcop_pass_dmx_data); |
161 | |
162 | void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no) |
163 | { |
164 | dvb_dmx_swfilter_packets(demux: &fc->demux, buf, count: no); |
165 | } |
166 | EXPORT_SYMBOL(flexcop_pass_dmx_packets); |
167 | |
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(msecs: 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(msecs: 1); |
195 | v204.misc_204.Per_reset_sig = 1; |
196 | fc->write_ibi_reg(fc,misc_204,v204); |
197 | } |
198 | |
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 | |
214 | struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len) |
215 | { |
216 | void *bus; |
217 | struct flexcop_device *fc = kzalloc(size: sizeof(struct flexcop_device), |
218 | GFP_KERNEL); |
219 | if (!fc) { |
220 | err("no memory" ); |
221 | return NULL; |
222 | } |
223 | |
224 | bus = kzalloc(size: bus_specific_len, GFP_KERNEL); |
225 | if (!bus) { |
226 | err("no memory" ); |
227 | kfree(objp: fc); |
228 | return NULL; |
229 | } |
230 | |
231 | fc->bus_specific = bus; |
232 | |
233 | return fc; |
234 | } |
235 | EXPORT_SYMBOL(flexcop_device_kmalloc); |
236 | |
237 | void flexcop_device_kfree(struct flexcop_device *fc) |
238 | { |
239 | kfree(objp: fc->bus_specific); |
240 | kfree(objp: fc); |
241 | } |
242 | EXPORT_SYMBOL(flexcop_device_kfree); |
243 | |
244 | int flexcop_device_initialize(struct flexcop_device *fc) |
245 | { |
246 | int ret; |
247 | ibi_zero.raw = 0; |
248 | |
249 | flexcop_reset(fc); |
250 | flexcop_determine_revision(fc); |
251 | flexcop_sram_init(fc); |
252 | flexcop_hw_filter_init(fc); |
253 | flexcop_smc_ctrl(fc, onoff: 0); |
254 | |
255 | ret = flexcop_dvb_init(fc); |
256 | if (ret) |
257 | goto error; |
258 | |
259 | /* i2c has to be done before doing EEProm stuff - |
260 | * because the EEProm is accessed via i2c */ |
261 | ret = flexcop_i2c_init(fc); |
262 | if (ret) |
263 | goto error; |
264 | |
265 | /* do the MAC address reading after initializing the dvb_adapter */ |
266 | if (fc->get_mac_addr(fc, 0) == 0) { |
267 | u8 *b = fc->dvb_adapter.proposed_mac; |
268 | info("MAC address = %pM" , b); |
269 | flexcop_set_mac_filter(fc,mac: b); |
270 | flexcop_mac_filter_ctrl(fc,onoff: 1); |
271 | } else |
272 | warn("reading of MAC address failed.\n" ); |
273 | |
274 | ret = flexcop_frontend_init(fc); |
275 | if (ret) |
276 | goto error; |
277 | |
278 | flexcop_device_name(fc,prefix: "initialization of" ,suffix: "complete" ); |
279 | return 0; |
280 | |
281 | error: |
282 | flexcop_device_exit(fc); |
283 | return ret; |
284 | } |
285 | EXPORT_SYMBOL(flexcop_device_initialize); |
286 | |
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 | |
295 | static int flexcop_module_init(void) |
296 | { |
297 | info(DRIVER_NAME " loaded successfully" ); |
298 | return 0; |
299 | } |
300 | |
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 | |