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
32int b2c2_flexcop_debug;
33EXPORT_SYMBOL_GPL(b2c2_flexcop_debug);
34module_param_named(debug, b2c2_flexcop_debug, int, 0644);
35MODULE_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
40DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
41
42/* global zero for ibi values */
43flexcop_ibi_value ibi_zero;
44
45static 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
51static 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
57static 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
121err_net:
122 fc->demux.dmx.disconnect_frontend(&fc->demux.dmx);
123err_connect_frontend:
124 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
125err_dmx_add_mem_frontend:
126 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
127err_dmx_add_hw_frontend:
128 dvb_dmxdev_release(dmxdev: &fc->dmxdev);
129err_dmx_dev:
130 dvb_dmx_release(demux: &fc->demux);
131err_dmx:
132 dvb_unregister_adapter(adap: &fc->dvb_adapter);
133 return ret;
134}
135
136static 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 */
156void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
157{
158 dvb_dmx_swfilter(demux: &fc->demux, buf, count: len);
159}
160EXPORT_SYMBOL(flexcop_pass_dmx_data);
161
162void 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}
166EXPORT_SYMBOL(flexcop_pass_dmx_packets);
167
168static 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
199void 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
214struct 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}
235EXPORT_SYMBOL(flexcop_device_kmalloc);
236
237void flexcop_device_kfree(struct flexcop_device *fc)
238{
239 kfree(objp: fc->bus_specific);
240 kfree(objp: fc);
241}
242EXPORT_SYMBOL(flexcop_device_kfree);
243
244int 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
281error:
282 flexcop_device_exit(fc);
283 return ret;
284}
285EXPORT_SYMBOL(flexcop_device_initialize);
286
287void flexcop_device_exit(struct flexcop_device *fc)
288{
289 flexcop_frontend_exit(fc);
290 flexcop_i2c_exit(fc);
291 flexcop_dvb_exit(fc);
292}
293EXPORT_SYMBOL(flexcop_device_exit);
294
295static int flexcop_module_init(void)
296{
297 info(DRIVER_NAME " loaded successfully");
298 return 0;
299}
300
301static void flexcop_module_cleanup(void)
302{
303 info(DRIVER_NAME " unloaded successfully");
304}
305
306module_init(flexcop_module_init);
307module_exit(flexcop_module_cleanup);
308
309MODULE_AUTHOR(DRIVER_AUTHOR);
310MODULE_DESCRIPTION(DRIVER_NAME);
311MODULE_LICENSE("GPL");
312

source code of linux/drivers/media/common/b2c2/flexcop.c