1/*
2 * flexcop.c - driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
3 *
4 * Copyright (C) 2004-5 Patrick Boettcher <patrick.boettcher@desy.de>
5 *
6 * based on the skystar2-driver
7 * Copyright (C) 2003 Vadim Catana, skystar@moldova.cc
8 *
9 * Acknowledgements:
10 *     John Jurrius from BBTI, Inc. for extensive support with
11 *         code examples and data books
12 *
13 *     Bjarne Steinsbo, bjarne at steinsbo.com (some ideas for rewriting)
14 *
15 * Contributions to the skystar2-driver have been done by
16 *     Vincenzo Di Massa, hawk.it at tiscalinet.it (several DiSEqC fixes)
17 *     Roberto Ragusa, r.ragusa at libero.it (polishing, restyling the code)
18 *     Niklas Peinecke, peinecke at gdv.uni-hannover.de (hardware pid/mac filtering)
19 *
20 *
21 * This program is free software; you can redistribute it and/or
22 * modify it under the terms of the GNU Lesser General Public License
23 * as published by the Free Software Foundation; either version 2.1
24 * of the License, or (at your option) any later version.
25 *
26 * This program is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
29 * GNU General Public License for more details.
30 *
31 * You should have received a copy of the GNU Lesser General Public License
32 * along with this program; if not, write to the Free Software
33 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
34 */
35
36#include "flexcop.h"
37
38#define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip"
39#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de"
40
41#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
42#define DEBSTATUS ""
43#else
44#define DEBSTATUS " (debugging is not enabled)"
45#endif
46
47int b2c2_flexcop_debug;
48module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
49MODULE_PARM_DESC(debug, "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram,32=reg (|-able))." DEBSTATUS);
50#undef DEBSTATUS
51
52/* global zero for ibi values */
53flexcop_ibi_value ibi_zero;
54
55static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
56{
57	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
58	return flexcop_pid_feed_control(fc,dvbdmxfeed,1);
59}
60
61static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
62{
63	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
64	return flexcop_pid_feed_control(fc,dvbdmxfeed,0);
65}
66
67static int flexcop_dvb_init(struct flexcop_device *fc)
68{
69	int ret;
70	if ((ret = dvb_register_adapter(&fc->dvb_adapter,"FlexCop Digital TV device",fc->owner,fc->dev)) < 0) {
71		err("error registering DVB adapter");
72		return ret;
73	}
74	fc->dvb_adapter.priv = fc;
75
76	fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
77	fc->demux.priv = fc;
78
79	fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
80
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	if ((ret = dvb_dmx_init(&fc->demux)) < 0) {
86		err("dvb_dmx failed: error %d",ret);
87		goto err_dmx;
88	}
89
90	fc->hw_frontend.source = DMX_FRONTEND_0;
91
92	fc->dmxdev.filternum = fc->demux.feednum;
93	fc->dmxdev.demux = &fc->demux.dmx;
94	fc->dmxdev.capabilities = 0;
95	if ((ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter)) < 0) {
96		err("dvb_dmxdev_init failed: error %d",ret);
97		goto err_dmx_dev;
98	}
99
100	if ((ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend)) < 0) {
101		err("adding hw_frontend to dmx failed: error %d",ret);
102		goto err_dmx_add_hw_frontend;
103	}
104
105	fc->mem_frontend.source = DMX_MEMORY_FE;
106	if ((ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend)) < 0) {
107		err("adding mem_frontend to dmx failed: error %d",ret);
108		goto err_dmx_add_mem_frontend;
109	}
110
111	if ((ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend)) < 0) {
112		err("connect frontend failed: error %d",ret);
113		goto err_connect_frontend;
114	}
115
116	dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
117
118	fc->init_state |= FC_STATE_DVB_INIT;
119	return 0;
120
121err_connect_frontend:
122	fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->mem_frontend);
123err_dmx_add_mem_frontend:
124	fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
125err_dmx_add_hw_frontend:
126	dvb_dmxdev_release(&fc->dmxdev);
127err_dmx_dev:
128	dvb_dmx_release(&fc->demux);
129err_dmx:
130	dvb_unregister_adapter(&fc->dvb_adapter);
131	return ret;
132}
133
134static void flexcop_dvb_exit(struct flexcop_device *fc)
135{
136	if (fc->init_state & FC_STATE_DVB_INIT) {
137		dvb_net_release(&fc->dvbnet);
138
139		fc->demux.dmx.close(&fc->demux.dmx);
140		fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->mem_frontend);
141		fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
142		dvb_dmxdev_release(&fc->dmxdev);
143		dvb_dmx_release(&fc->demux);
144		dvb_unregister_adapter(&fc->dvb_adapter);
145
146		deb_info("deinitialized dvb stuff\n");
147	}
148	fc->init_state &= ~FC_STATE_DVB_INIT;
149}
150
151/* these methods are necessary to achieve the long-term-goal of hiding the
152 * struct flexcop_device from the bus-parts */
153void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
154{
155	dvb_dmx_swfilter(&fc->demux, buf, len);
156}
157EXPORT_SYMBOL(flexcop_pass_dmx_data);
158
159void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
160{
161	dvb_dmx_swfilter_packets(&fc->demux, buf, no);
162}
163EXPORT_SYMBOL(flexcop_pass_dmx_packets);
164
165static void flexcop_reset(struct flexcop_device *fc)
166{
167	flexcop_ibi_value v210,v204;
168
169/* reset the flexcop itself */
170	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
171
172	v210.raw = 0;
173	v210.sw_reset_210.reset_block_000 = 1;
174	v210.sw_reset_210.reset_block_100 = 1;
175	v210.sw_reset_210.reset_block_200 = 1;
176	v210.sw_reset_210.reset_block_300 = 1;
177	v210.sw_reset_210.reset_block_400 = 1;
178	v210.sw_reset_210.reset_block_500 = 1;
179	v210.sw_reset_210.reset_block_600 = 1;
180	v210.sw_reset_210.reset_block_700 = 1;
181	v210.sw_reset_210.Block_reset_enable = 0xb2;
182
183	v210.sw_reset_210.Special_controls = 0xc259;
184
185	fc->write_ibi_reg(fc,sw_reset_210,v210);
186	msleep(1);
187
188/* reset the periphical devices */
189
190	v204 = fc->read_ibi_reg(fc,misc_204);
191	v204.misc_204.Per_reset_sig = 0;
192	fc->write_ibi_reg(fc,misc_204,v204);
193	msleep(1);
194	v204.misc_204.Per_reset_sig = 1;
195	fc->write_ibi_reg(fc,misc_204,v204);
196}
197
198void flexcop_reset_block_300(struct flexcop_device *fc)
199{
200	flexcop_ibi_value v208_save = fc->read_ibi_reg(fc,ctrl_208),
201					  v210 = fc->read_ibi_reg(fc,sw_reset_210);
202
203	deb_rdump("208: %08x, 210: %08x\n",v208_save.raw,v210.raw);
204
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	msleep(1);
212
213	fc->write_ibi_reg(fc,ctrl_208,v208_save);
214}
215EXPORT_SYMBOL(flexcop_reset_block_300);
216
217struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
218{
219	void *bus;
220	struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device), GFP_KERNEL);
221	if (!fc) {
222		err("no memory");
223		return NULL;
224	}
225
226	bus = kzalloc(bus_specific_len, GFP_KERNEL);
227	if (!bus) {
228		err("no memory");
229		kfree(fc);
230		return NULL;
231	}
232
233	fc->bus_specific = bus;
234
235	return fc;
236}
237EXPORT_SYMBOL(flexcop_device_kmalloc);
238
239void flexcop_device_kfree(struct flexcop_device *fc)
240{
241	kfree(fc->bus_specific);
242	kfree(fc);
243}
244EXPORT_SYMBOL(flexcop_device_kfree);
245
246int flexcop_device_initialize(struct flexcop_device *fc)
247{
248	int ret;
249	ibi_zero.raw = 0;
250
251	flexcop_reset(fc);
252	flexcop_determine_revision(fc);
253	flexcop_sram_init(fc);
254	flexcop_hw_filter_init(fc);
255
256	flexcop_smc_ctrl(fc, 0);
257
258	if ((ret = flexcop_dvb_init(fc)))
259		goto error;
260
261	/* do the MAC address reading after initializing the dvb_adapter */
262	if (fc->get_mac_addr(fc, 0) == 0) {
263		u8 *b = fc->dvb_adapter.proposed_mac;
264		info("MAC address = %02x:%02x:%02x:%02x:%02x:%02x", b[0],b[1],b[2],b[3],b[4],b[5]);
265		flexcop_set_mac_filter(fc,b);
266		flexcop_mac_filter_ctrl(fc,1);
267	} else
268		warn("reading of MAC address failed.\n");
269
270
271	if ((ret = flexcop_i2c_init(fc)))
272		goto error;
273
274	if ((ret = flexcop_frontend_init(fc)))
275		goto error;
276
277	flexcop_device_name(fc,"initialization of","complete");
278
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