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