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@posteo.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
30#include "flexcop.h"
31
32#define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip"
33#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@posteo.de"
34
35#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
36#define DEBSTATUS ""
37#else
38#define DEBSTATUS " (debugging is not enabled)"
39#endif
40
41int b2c2_flexcop_debug;
42EXPORT_SYMBOL_GPL(b2c2_flexcop_debug);
43module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
44MODULE_PARM_DESC(debug,
45		"set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram,32=reg,64=i2cdump (|-able))."
46		DEBSTATUS);
47#undef DEBSTATUS
48
49DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
50
51/* global zero for ibi values */
52flexcop_ibi_value ibi_zero;
53
54static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
55{
56	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
57	return flexcop_pid_feed_control(fc, dvbdmxfeed, 1);
58}
59
60static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
61{
62	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
63	return flexcop_pid_feed_control(fc, dvbdmxfeed, 0);
64}
65
66static int flexcop_dvb_init(struct flexcop_device *fc)
67{
68	int ret = dvb_register_adapter(&fc->dvb_adapter,
69			"FlexCop Digital TV device", fc->owner,
70			fc->dev, adapter_nr);
71	if (ret < 0) {
72		err("error registering DVB adapter");
73		return ret;
74	}
75	fc->dvb_adapter.priv = fc;
76
77	fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING
78			| DMX_MEMORY_BASED_FILTERING);
79	fc->demux.priv = fc;
80	fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
81	fc->demux.start_feed = flexcop_dvb_start_feed;
82	fc->demux.stop_feed = flexcop_dvb_stop_feed;
83	fc->demux.write_to_decoder = NULL;
84
85	ret = dvb_dmx_init(&fc->demux);
86	if (ret < 0) {
87		err("dvb_dmx failed: error %d", ret);
88		goto err_dmx;
89	}
90
91	fc->hw_frontend.source = DMX_FRONTEND_0;
92
93	fc->dmxdev.filternum = fc->demux.feednum;
94	fc->dmxdev.demux = &fc->demux.dmx;
95	fc->dmxdev.capabilities = 0;
96	ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter);
97	if (ret < 0) {
98		err("dvb_dmxdev_init failed: error %d", ret);
99		goto err_dmx_dev;
100	}
101
102	ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend);
103	if (ret < 0) {
104		err("adding hw_frontend to dmx failed: error %d", ret);
105		goto err_dmx_add_hw_frontend;
106	}
107
108	fc->mem_frontend.source = DMX_MEMORY_FE;
109	ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend);
110	if (ret < 0) {
111		err("adding mem_frontend to dmx failed: error %d", ret);
112		goto err_dmx_add_mem_frontend;
113	}
114
115	ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend);
116	if (ret < 0) {
117		err("connect frontend failed: error %d", ret);
118		goto err_connect_frontend;
119	}
120
121	ret = dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
122	if (ret < 0) {
123		err("dvb_net_init failed: error %d", ret);
124		goto err_net;
125	}
126
127	fc->init_state |= FC_STATE_DVB_INIT;
128	return 0;
129
130err_net:
131	fc->demux.dmx.disconnect_frontend(&fc->demux.dmx);
132err_connect_frontend:
133	fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
134err_dmx_add_mem_frontend:
135	fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
136err_dmx_add_hw_frontend:
137	dvb_dmxdev_release(&fc->dmxdev);
138err_dmx_dev:
139	dvb_dmx_release(&fc->demux);
140err_dmx:
141	dvb_unregister_adapter(&fc->dvb_adapter);
142	return ret;
143}
144
145static void flexcop_dvb_exit(struct flexcop_device *fc)
146{
147	if (fc->init_state & FC_STATE_DVB_INIT) {
148		dvb_net_release(&fc->dvbnet);
149
150		fc->demux.dmx.close(&fc->demux.dmx);
151		fc->demux.dmx.remove_frontend(&fc->demux.dmx,
152			&fc->mem_frontend);
153		fc->demux.dmx.remove_frontend(&fc->demux.dmx,
154			&fc->hw_frontend);
155		dvb_dmxdev_release(&fc->dmxdev);
156		dvb_dmx_release(&fc->demux);
157		dvb_unregister_adapter(&fc->dvb_adapter);
158		deb_info("deinitialized dvb stuff\n");
159	}
160	fc->init_state &= ~FC_STATE_DVB_INIT;
161}
162
163/* these methods are necessary to achieve the long-term-goal of hiding the
164 * struct flexcop_device from the bus-parts */
165void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
166{
167	dvb_dmx_swfilter(&fc->demux, buf, len);
168}
169EXPORT_SYMBOL(flexcop_pass_dmx_data);
170
171void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
172{
173	dvb_dmx_swfilter_packets(&fc->demux, buf, no);
174}
175EXPORT_SYMBOL(flexcop_pass_dmx_packets);
176
177static void flexcop_reset(struct flexcop_device *fc)
178{
179	flexcop_ibi_value v210, v204;
180
181	/* reset the flexcop itself */
182	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
183
184	v210.raw = 0;
185	v210.sw_reset_210.reset_block_000 = 1;
186	v210.sw_reset_210.reset_block_100 = 1;
187	v210.sw_reset_210.reset_block_200 = 1;
188	v210.sw_reset_210.reset_block_300 = 1;
189	v210.sw_reset_210.reset_block_400 = 1;
190	v210.sw_reset_210.reset_block_500 = 1;
191	v210.sw_reset_210.reset_block_600 = 1;
192	v210.sw_reset_210.reset_block_700 = 1;
193	v210.sw_reset_210.Block_reset_enable = 0xb2;
194	v210.sw_reset_210.Special_controls = 0xc259;
195	fc->write_ibi_reg(fc,sw_reset_210,v210);
196	msleep(1);
197
198	/* reset the periphical devices */
199
200	v204 = fc->read_ibi_reg(fc,misc_204);
201	v204.misc_204.Per_reset_sig = 0;
202	fc->write_ibi_reg(fc,misc_204,v204);
203	msleep(1);
204	v204.misc_204.Per_reset_sig = 1;
205	fc->write_ibi_reg(fc,misc_204,v204);
206}
207
208void flexcop_reset_block_300(struct flexcop_device *fc)
209{
210	flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208),
211			  v210 = fc->read_ibi_reg(fc, sw_reset_210);
212
213	deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw);
214	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
215
216	v210.sw_reset_210.reset_block_300 = 1;
217	v210.sw_reset_210.Block_reset_enable = 0xb2;
218
219	fc->write_ibi_reg(fc,sw_reset_210,v210);
220	fc->write_ibi_reg(fc,ctrl_208,v208_save);
221}
222
223struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
224{
225	void *bus;
226	struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device),
227				GFP_KERNEL);
228	if (!fc) {
229		err("no memory");
230		return NULL;
231	}
232
233	bus = kzalloc(bus_specific_len, GFP_KERNEL);
234	if (!bus) {
235		err("no memory");
236		kfree(fc);
237		return NULL;
238	}
239
240	fc->bus_specific = bus;
241
242	return fc;
243}
244EXPORT_SYMBOL(flexcop_device_kmalloc);
245
246void flexcop_device_kfree(struct flexcop_device *fc)
247{
248	kfree(fc->bus_specific);
249	kfree(fc);
250}
251EXPORT_SYMBOL(flexcop_device_kfree);
252
253int flexcop_device_initialize(struct flexcop_device *fc)
254{
255	int ret;
256	ibi_zero.raw = 0;
257
258	flexcop_reset(fc);
259	flexcop_determine_revision(fc);
260	flexcop_sram_init(fc);
261	flexcop_hw_filter_init(fc);
262	flexcop_smc_ctrl(fc, 0);
263
264	ret = flexcop_dvb_init(fc);
265	if (ret)
266		goto error;
267
268	/* i2c has to be done before doing EEProm stuff -
269	 * because the EEProm is accessed via i2c */
270	ret = flexcop_i2c_init(fc);
271	if (ret)
272		goto error;
273
274	/* do the MAC address reading after initializing the dvb_adapter */
275	if (fc->get_mac_addr(fc, 0) == 0) {
276		u8 *b = fc->dvb_adapter.proposed_mac;
277		info("MAC address = %pM", b);
278		flexcop_set_mac_filter(fc,b);
279		flexcop_mac_filter_ctrl(fc,1);
280	} else
281		warn("reading of MAC address failed.\n");
282
283	ret = flexcop_frontend_init(fc);
284	if (ret)
285		goto error;
286
287	flexcop_device_name(fc,"initialization of","complete");
288	return 0;
289
290error:
291	flexcop_device_exit(fc);
292	return ret;
293}
294EXPORT_SYMBOL(flexcop_device_initialize);
295
296void flexcop_device_exit(struct flexcop_device *fc)
297{
298	flexcop_frontend_exit(fc);
299	flexcop_i2c_exit(fc);
300	flexcop_dvb_exit(fc);
301}
302EXPORT_SYMBOL(flexcop_device_exit);
303
304static int flexcop_module_init(void)
305{
306	info(DRIVER_NAME " loaded successfully");
307	return 0;
308}
309
310static void flexcop_module_cleanup(void)
311{
312	info(DRIVER_NAME " unloaded successfully");
313}
314
315module_init(flexcop_module_init);
316module_exit(flexcop_module_cleanup);
317
318MODULE_AUTHOR(DRIVER_AUTHOR);
319MODULE_DESCRIPTION(DRIVER_NAME);
320MODULE_LICENSE("GPL");
321