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
45int b2c2_flexcop_debug;
46EXPORT_SYMBOL_GPL(b2c2_flexcop_debug);
47module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
48MODULE_PARM_DESC(debug,
49		"set debug level (1=info,2=tuner,4=i2c,8=ts,"
50		"16=sram,32=reg (|-able))."
51		DEBSTATUS);
52#undef DEBSTATUS
53
54DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
55
56/* global zero for ibi values */
57flexcop_ibi_value ibi_zero;
58
59static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
60{
61	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
62	return flexcop_pid_feed_control(fc, dvbdmxfeed, 1);
63}
64
65static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
66{
67	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
68	return flexcop_pid_feed_control(fc, dvbdmxfeed, 0);
69}
70
71static int flexcop_dvb_init(struct flexcop_device *fc)
72{
73	int ret = dvb_register_adapter(&fc->dvb_adapter,
74			"FlexCop Digital TV device", fc->owner,
75			fc->dev, adapter_nr);
76	if (ret < 0) {
77		err("error registering DVB adapter");
78		return ret;
79	}
80	fc->dvb_adapter.priv = fc;
81
82	fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING
83			| DMX_MEMORY_BASED_FILTERING);
84	fc->demux.priv = fc;
85	fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
86	fc->demux.start_feed = flexcop_dvb_start_feed;
87	fc->demux.stop_feed = flexcop_dvb_stop_feed;
88	fc->demux.write_to_decoder = NULL;
89
90	ret = dvb_dmx_init(&fc->demux);
91	if (ret < 0) {
92		err("dvb_dmx failed: error %d", ret);
93		goto err_dmx;
94	}
95
96	fc->hw_frontend.source = DMX_FRONTEND_0;
97
98	fc->dmxdev.filternum = fc->demux.feednum;
99	fc->dmxdev.demux = &fc->demux.dmx;
100	fc->dmxdev.capabilities = 0;
101	ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter);
102	if (ret < 0) {
103		err("dvb_dmxdev_init failed: error %d", ret);
104		goto err_dmx_dev;
105	}
106
107	ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend);
108	if (ret < 0) {
109		err("adding hw_frontend to dmx failed: error %d", ret);
110		goto err_dmx_add_hw_frontend;
111	}
112
113	fc->mem_frontend.source = DMX_MEMORY_FE;
114	ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend);
115	if (ret < 0) {
116		err("adding mem_frontend to dmx failed: error %d", ret);
117		goto err_dmx_add_mem_frontend;
118	}
119
120	ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend);
121	if (ret < 0) {
122		err("connect frontend failed: error %d", ret);
123		goto err_connect_frontend;
124	}
125
126	ret = dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
127	if (ret < 0) {
128		err("dvb_net_init failed: error %d", ret);
129		goto err_net;
130	}
131
132	fc->init_state |= FC_STATE_DVB_INIT;
133	return 0;
134
135err_net:
136	fc->demux.dmx.disconnect_frontend(&fc->demux.dmx);
137err_connect_frontend:
138	fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
139err_dmx_add_mem_frontend:
140	fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
141err_dmx_add_hw_frontend:
142	dvb_dmxdev_release(&fc->dmxdev);
143err_dmx_dev:
144	dvb_dmx_release(&fc->demux);
145err_dmx:
146	dvb_unregister_adapter(&fc->dvb_adapter);
147	return ret;
148}
149
150static void flexcop_dvb_exit(struct flexcop_device *fc)
151{
152	if (fc->init_state & FC_STATE_DVB_INIT) {
153		dvb_net_release(&fc->dvbnet);
154
155		fc->demux.dmx.close(&fc->demux.dmx);
156		fc->demux.dmx.remove_frontend(&fc->demux.dmx,
157			&fc->mem_frontend);
158		fc->demux.dmx.remove_frontend(&fc->demux.dmx,
159			&fc->hw_frontend);
160		dvb_dmxdev_release(&fc->dmxdev);
161		dvb_dmx_release(&fc->demux);
162		dvb_unregister_adapter(&fc->dvb_adapter);
163		deb_info("deinitialized dvb stuff\n");
164	}
165	fc->init_state &= ~FC_STATE_DVB_INIT;
166}
167
168/* these methods are necessary to achieve the long-term-goal of hiding the
169 * struct flexcop_device from the bus-parts */
170void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
171{
172	dvb_dmx_swfilter(&fc->demux, buf, len);
173}
174EXPORT_SYMBOL(flexcop_pass_dmx_data);
175
176void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
177{
178	dvb_dmx_swfilter_packets(&fc->demux, buf, no);
179}
180EXPORT_SYMBOL(flexcop_pass_dmx_packets);
181
182static void flexcop_reset(struct flexcop_device *fc)
183{
184	flexcop_ibi_value v210, v204;
185
186	/* reset the flexcop itself */
187	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
188
189	v210.raw = 0;
190	v210.sw_reset_210.reset_block_000 = 1;
191	v210.sw_reset_210.reset_block_100 = 1;
192	v210.sw_reset_210.reset_block_200 = 1;
193	v210.sw_reset_210.reset_block_300 = 1;
194	v210.sw_reset_210.reset_block_400 = 1;
195	v210.sw_reset_210.reset_block_500 = 1;
196	v210.sw_reset_210.reset_block_600 = 1;
197	v210.sw_reset_210.reset_block_700 = 1;
198	v210.sw_reset_210.Block_reset_enable = 0xb2;
199	v210.sw_reset_210.Special_controls = 0xc259;
200	fc->write_ibi_reg(fc,sw_reset_210,v210);
201	msleep(1);
202
203	/* reset the periphical devices */
204
205	v204 = fc->read_ibi_reg(fc,misc_204);
206	v204.misc_204.Per_reset_sig = 0;
207	fc->write_ibi_reg(fc,misc_204,v204);
208	msleep(1);
209	v204.misc_204.Per_reset_sig = 1;
210	fc->write_ibi_reg(fc,misc_204,v204);
211}
212
213void flexcop_reset_block_300(struct flexcop_device *fc)
214{
215	flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208),
216			  v210 = fc->read_ibi_reg(fc, sw_reset_210);
217
218	deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw);
219	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
220
221	v210.sw_reset_210.reset_block_300 = 1;
222	v210.sw_reset_210.Block_reset_enable = 0xb2;
223
224	fc->write_ibi_reg(fc,sw_reset_210,v210);
225	fc->write_ibi_reg(fc,ctrl_208,v208_save);
226}
227
228struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
229{
230	void *bus;
231	struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device),
232				GFP_KERNEL);
233	if (!fc) {
234		err("no memory");
235		return NULL;
236	}
237
238	bus = kzalloc(bus_specific_len, GFP_KERNEL);
239	if (!bus) {
240		err("no memory");
241		kfree(fc);
242		return NULL;
243	}
244
245	fc->bus_specific = bus;
246
247	return fc;
248}
249EXPORT_SYMBOL(flexcop_device_kmalloc);
250
251void flexcop_device_kfree(struct flexcop_device *fc)
252{
253	kfree(fc->bus_specific);
254	kfree(fc);
255}
256EXPORT_SYMBOL(flexcop_device_kfree);
257
258int flexcop_device_initialize(struct flexcop_device *fc)
259{
260	int ret;
261	ibi_zero.raw = 0;
262
263	flexcop_reset(fc);
264	flexcop_determine_revision(fc);
265	flexcop_sram_init(fc);
266	flexcop_hw_filter_init(fc);
267	flexcop_smc_ctrl(fc, 0);
268
269	ret = flexcop_dvb_init(fc);
270	if (ret)
271		goto error;
272
273	/* i2c has to be done before doing EEProm stuff -
274	 * because the EEProm is accessed via i2c */
275	ret = flexcop_i2c_init(fc);
276	if (ret)
277		goto error;
278
279	/* do the MAC address reading after initializing the dvb_adapter */
280	if (fc->get_mac_addr(fc, 0) == 0) {
281		u8 *b = fc->dvb_adapter.proposed_mac;
282		info("MAC address = %pM", b);
283		flexcop_set_mac_filter(fc,b);
284		flexcop_mac_filter_ctrl(fc,1);
285	} else
286		warn("reading of MAC address failed.\n");
287
288	ret = flexcop_frontend_init(fc);
289	if (ret)
290		goto error;
291
292	flexcop_device_name(fc,"initialization of","complete");
293	return 0;
294
295error:
296	flexcop_device_exit(fc);
297	return ret;
298}
299EXPORT_SYMBOL(flexcop_device_initialize);
300
301void flexcop_device_exit(struct flexcop_device *fc)
302{
303	flexcop_frontend_exit(fc);
304	flexcop_i2c_exit(fc);
305	flexcop_dvb_exit(fc);
306}
307EXPORT_SYMBOL(flexcop_device_exit);
308
309static int flexcop_module_init(void)
310{
311	info(DRIVER_NAME " loaded successfully");
312	return 0;
313}
314
315static void flexcop_module_cleanup(void)
316{
317	info(DRIVER_NAME " unloaded successfully");
318}
319
320module_init(flexcop_module_init);
321module_exit(flexcop_module_cleanup);
322
323MODULE_AUTHOR(DRIVER_AUTHOR);
324MODULE_DESCRIPTION(DRIVER_NAME);
325MODULE_LICENSE("GPL");
326