Automatic merge of /spare/repo/netdev-2.6 branch veth
[linux-2.6] / drivers / media / dvb / b2c2 / flexcop.c
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
47 int b2c2_flexcop_debug;
48 module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
49 MODULE_PARM_DESC(debug, "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram (|-able))." DEBSTATUS);
50 #undef DEBSTATUS
51
52 /* global zero for ibi values */
53 flexcop_ibi_value ibi_zero;
54
55 static 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
61 static 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
67 static 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)) < 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         goto success;
120
121 err_connect_frontend:
122         fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->mem_frontend);
123 err_dmx_add_mem_frontend:
124         fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
125 err_dmx_add_hw_frontend:
126         dvb_dmxdev_release(&fc->dmxdev);
127 err_dmx_dev:
128         dvb_dmx_release(&fc->demux);
129 err_dmx:
130         dvb_unregister_adapter(&fc->dvb_adapter);
131         return ret;
132
133 success:
134         return 0;
135 }
136
137 static void flexcop_dvb_exit(struct flexcop_device *fc)
138 {
139         if (fc->init_state & FC_STATE_DVB_INIT) {
140                 dvb_net_release(&fc->dvbnet);
141
142                 fc->demux.dmx.close(&fc->demux.dmx);
143                 fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->mem_frontend);
144                 fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
145                 dvb_dmxdev_release(&fc->dmxdev);
146                 dvb_dmx_release(&fc->demux);
147                 dvb_unregister_adapter(&fc->dvb_adapter);
148
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(&fc->demux, buf, 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(&fc->demux, buf, 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_blocks = 0xff;
177         v210.sw_reset_210.Block_reset_enable = 0xb2;
178         fc->write_ibi_reg(fc,sw_reset_210,v210);
179
180 /* reset the periphical devices */
181
182         v204 = fc->read_ibi_reg(fc,misc_204);
183         v204.misc_204.Per_reset_sig = 0;
184         fc->write_ibi_reg(fc,misc_204,v204);
185         v204.misc_204.Per_reset_sig = 1;
186         fc->write_ibi_reg(fc,misc_204,v204);
187 }
188
189 struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
190 {
191         void *bus;
192         struct flexcop_device *fc = kmalloc(sizeof(struct flexcop_device), GFP_KERNEL);
193         if (!fc) {
194                 err("no memory");
195                 return NULL;
196         }
197         memset(fc, 0, sizeof(struct flexcop_device));
198
199         bus = kmalloc(bus_specific_len, GFP_KERNEL);
200         if (!bus) {
201                 err("no memory");
202                 kfree(fc);
203                 return NULL;
204         }
205         memset(bus, 0, bus_specific_len);
206
207         fc->bus_specific = bus;
208
209         return fc;
210 }
211 EXPORT_SYMBOL(flexcop_device_kmalloc);
212
213 void flexcop_device_kfree(struct flexcop_device *fc)
214 {
215         kfree(fc->bus_specific);
216         kfree(fc);
217 }
218 EXPORT_SYMBOL(flexcop_device_kfree);
219
220 int flexcop_device_initialize(struct flexcop_device *fc)
221 {
222         int ret;
223         ibi_zero.raw = 0;
224
225         flexcop_reset(fc);
226         flexcop_determine_revision(fc);
227         flexcop_sram_init(fc);
228         flexcop_hw_filter_init(fc);
229
230         flexcop_smc_ctrl(fc, 0);
231
232         if ((ret = flexcop_dvb_init(fc)))
233                 goto error;
234
235         /* do the MAC address reading after initializing the dvb_adapter */
236         if (fc->get_mac_addr(fc, 0) == 0) {
237                 u8 *b = fc->dvb_adapter.proposed_mac;
238                 info("MAC address = %02x:%02x:%02x:%02x:%02x:%02x", b[0],b[1],b[2],b[3],b[4],b[5]);
239                 flexcop_set_mac_filter(fc,b);
240                 flexcop_mac_filter_ctrl(fc,1);
241         } else
242                 warn("reading of MAC address failed.\n");
243
244
245         if ((ret = flexcop_i2c_init(fc)))
246                 goto error;
247
248         if ((ret = flexcop_frontend_init(fc)))
249                 goto error;
250
251         flexcop_device_name(fc,"initialization of","complete");
252
253         ret = 0;
254         goto success;
255 error:
256         flexcop_device_exit(fc);
257 success:
258         return ret;
259 }
260 EXPORT_SYMBOL(flexcop_device_initialize);
261
262 void flexcop_device_exit(struct flexcop_device *fc)
263 {
264         flexcop_frontend_exit(fc);
265         flexcop_i2c_exit(fc);
266         flexcop_dvb_exit(fc);
267 }
268 EXPORT_SYMBOL(flexcop_device_exit);
269
270 static int flexcop_module_init(void)
271 {
272         info(DRIVER_NAME " loaded successfully");
273         return 0;
274 }
275
276 static void flexcop_module_cleanup(void)
277 {
278         info(DRIVER_NAME " unloaded successfully");
279 }
280
281 module_init(flexcop_module_init);
282 module_exit(flexcop_module_cleanup);
283
284 MODULE_AUTHOR(DRIVER_AUTHOR);
285 MODULE_DESCRIPTION(DRIVER_NAME);
286 MODULE_LICENSE("GPL");