Merge branch 'for-2.6.30' into for-2.6.31
[linux-2.6] / drivers / media / dvb / b2c2 / flexcop.c
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
45 int b2c2_flexcop_debug;
46 module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
47 MODULE_PARM_DESC(debug,
48                 "set debug level (1=info,2=tuner,4=i2c,8=ts,"
49                 "16=sram,32=reg (|-able))."
50                 DEBSTATUS);
51 #undef DEBSTATUS
52
53 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
54
55 /* global zero for ibi values */
56 flexcop_ibi_value ibi_zero;
57
58 static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
59 {
60         struct flexcop_device *fc = dvbdmxfeed->demux->priv;
61         return flexcop_pid_feed_control(fc, dvbdmxfeed, 1);
62 }
63
64 static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
65 {
66         struct flexcop_device *fc = dvbdmxfeed->demux->priv;
67         return flexcop_pid_feed_control(fc, dvbdmxfeed, 0);
68 }
69
70 static int flexcop_dvb_init(struct flexcop_device *fc)
71 {
72         int ret = dvb_register_adapter(&fc->dvb_adapter,
73                         "FlexCop Digital TV device", fc->owner,
74                         fc->dev, adapter_nr);
75         if (ret < 0) {
76                 err("error registering DVB adapter");
77                 return ret;
78         }
79         fc->dvb_adapter.priv = fc;
80
81         fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING
82                         | DMX_MEMORY_BASED_FILTERING);
83         fc->demux.priv = fc;
84         fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
85         fc->demux.start_feed = flexcop_dvb_start_feed;
86         fc->demux.stop_feed = flexcop_dvb_stop_feed;
87         fc->demux.write_to_decoder = NULL;
88
89         if ((ret = dvb_dmx_init(&fc->demux)) < 0) {
90                 err("dvb_dmx failed: error %d", ret);
91                 goto err_dmx;
92         }
93
94         fc->hw_frontend.source = DMX_FRONTEND_0;
95
96         fc->dmxdev.filternum = fc->demux.feednum;
97         fc->dmxdev.demux = &fc->demux.dmx;
98         fc->dmxdev.capabilities = 0;
99         if ((ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter)) < 0) {
100                 err("dvb_dmxdev_init failed: error %d", ret);
101                 goto err_dmx_dev;
102         }
103
104         if ((ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend)) < 0) {
105                 err("adding hw_frontend to dmx failed: error %d", ret);
106                 goto err_dmx_add_hw_frontend;
107         }
108
109         fc->mem_frontend.source = DMX_MEMORY_FE;
110         if ((ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend)) < 0) {
111                 err("adding mem_frontend to dmx failed: error %d", ret);
112                 goto err_dmx_add_mem_frontend;
113         }
114
115         if ((ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend)) < 0) {
116                 err("connect frontend failed: error %d", ret);
117                 goto err_connect_frontend;
118         }
119
120         dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
121
122         fc->init_state |= FC_STATE_DVB_INIT;
123         return 0;
124
125 err_connect_frontend:
126         fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
127 err_dmx_add_mem_frontend:
128         fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
129 err_dmx_add_hw_frontend:
130         dvb_dmxdev_release(&fc->dmxdev);
131 err_dmx_dev:
132         dvb_dmx_release(&fc->demux);
133 err_dmx:
134         dvb_unregister_adapter(&fc->dvb_adapter);
135         return ret;
136 }
137
138 static void flexcop_dvb_exit(struct flexcop_device *fc)
139 {
140         if (fc->init_state & FC_STATE_DVB_INIT) {
141                 dvb_net_release(&fc->dvbnet);
142
143                 fc->demux.dmx.close(&fc->demux.dmx);
144                 fc->demux.dmx.remove_frontend(&fc->demux.dmx,
145                         &fc->mem_frontend);
146                 fc->demux.dmx.remove_frontend(&fc->demux.dmx,
147                         &fc->hw_frontend);
148                 dvb_dmxdev_release(&fc->dmxdev);
149                 dvb_dmx_release(&fc->demux);
150                 dvb_unregister_adapter(&fc->dvb_adapter);
151                 deb_info("deinitialized dvb stuff\n");
152         }
153         fc->init_state &= ~FC_STATE_DVB_INIT;
154 }
155
156 /* these methods are necessary to achieve the long-term-goal of hiding the
157  * struct flexcop_device from the bus-parts */
158 void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
159 {
160         dvb_dmx_swfilter(&fc->demux, buf, len);
161 }
162 EXPORT_SYMBOL(flexcop_pass_dmx_data);
163
164 void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
165 {
166         dvb_dmx_swfilter_packets(&fc->demux, buf, no);
167 }
168 EXPORT_SYMBOL(flexcop_pass_dmx_packets);
169
170 static void flexcop_reset(struct flexcop_device *fc)
171 {
172         flexcop_ibi_value v210, v204;
173
174         /* reset the flexcop itself */
175         fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
176
177         v210.raw = 0;
178         v210.sw_reset_210.reset_block_000 = 1;
179         v210.sw_reset_210.reset_block_100 = 1;
180         v210.sw_reset_210.reset_block_200 = 1;
181         v210.sw_reset_210.reset_block_300 = 1;
182         v210.sw_reset_210.reset_block_400 = 1;
183         v210.sw_reset_210.reset_block_500 = 1;
184         v210.sw_reset_210.reset_block_600 = 1;
185         v210.sw_reset_210.reset_block_700 = 1;
186         v210.sw_reset_210.Block_reset_enable = 0xb2;
187         v210.sw_reset_210.Special_controls = 0xc259;
188         fc->write_ibi_reg(fc,sw_reset_210,v210);
189         msleep(1);
190
191         /* reset the periphical devices */
192
193         v204 = fc->read_ibi_reg(fc,misc_204);
194         v204.misc_204.Per_reset_sig = 0;
195         fc->write_ibi_reg(fc,misc_204,v204);
196         msleep(1);
197         v204.misc_204.Per_reset_sig = 1;
198         fc->write_ibi_reg(fc,misc_204,v204);
199 }
200
201 void flexcop_reset_block_300(struct flexcop_device *fc)
202 {
203         flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208),
204                           v210 = fc->read_ibi_reg(fc, sw_reset_210);
205
206         deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw);
207         fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
208
209         v210.sw_reset_210.reset_block_300 = 1;
210         v210.sw_reset_210.Block_reset_enable = 0xb2;
211
212         fc->write_ibi_reg(fc,sw_reset_210,v210);
213         fc->write_ibi_reg(fc,ctrl_208,v208_save);
214 }
215
216 struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
217 {
218         void *bus;
219         struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device),
220                                 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 }
237 EXPORT_SYMBOL(flexcop_device_kmalloc);
238
239 void flexcop_device_kfree(struct flexcop_device *fc)
240 {
241         kfree(fc->bus_specific);
242         kfree(fc);
243 }
244 EXPORT_SYMBOL(flexcop_device_kfree);
245
246 int 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         flexcop_smc_ctrl(fc, 0);
256
257         if ((ret = flexcop_dvb_init(fc)))
258                 goto error;
259
260         /* i2c has to be done before doing EEProm stuff -
261          * because the EEProm is accessed via i2c */
262         ret = flexcop_i2c_init(fc);
263         if (ret)
264                 goto error;
265
266         /* do the MAC address reading after initializing the dvb_adapter */
267         if (fc->get_mac_addr(fc, 0) == 0) {
268                 u8 *b = fc->dvb_adapter.proposed_mac;
269                 info("MAC address = %pM", b);
270                 flexcop_set_mac_filter(fc,b);
271                 flexcop_mac_filter_ctrl(fc,1);
272         } else
273                 warn("reading of MAC address failed.\n");
274
275         if ((ret = flexcop_frontend_init(fc)))
276                 goto error;
277
278         flexcop_device_name(fc,"initialization of","complete");
279         return 0;
280
281 error:
282         flexcop_device_exit(fc);
283         return ret;
284 }
285 EXPORT_SYMBOL(flexcop_device_initialize);
286
287 void flexcop_device_exit(struct flexcop_device *fc)
288 {
289         flexcop_frontend_exit(fc);
290         flexcop_i2c_exit(fc);
291         flexcop_dvb_exit(fc);
292 }
293 EXPORT_SYMBOL(flexcop_device_exit);
294
295 static int flexcop_module_init(void)
296 {
297         info(DRIVER_NAME " loaded successfully");
298         return 0;
299 }
300
301 static void flexcop_module_cleanup(void)
302 {
303         info(DRIVER_NAME " unloaded successfully");
304 }
305
306 module_init(flexcop_module_init);
307 module_exit(flexcop_module_cleanup);
308
309 MODULE_AUTHOR(DRIVER_AUTHOR);
310 MODULE_DESCRIPTION(DRIVER_NAME);
311 MODULE_LICENSE("GPL");