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,32=reg (|-able))." DEBSTATUS);
  50 #undef DEBSTATUS
  51
  52 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  53
  54 /* global zero for ibi values */
  55 flexcop_ibi_value ibi_zero;
  56
  57 static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
  58 {
  59         struct flexcop_device *fc = dvbdmxfeed->demux->priv;
  60         return flexcop_pid_feed_control(fc,dvbdmxfeed,1);
  61 }
  62
  63 static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
  64 {
  65         struct flexcop_device *fc = dvbdmxfeed->demux->priv;
  66         return flexcop_pid_feed_control(fc,dvbdmxfeed,0);
  67 }
  68
  69 static int flexcop_dvb_init(struct flexcop_device *fc)
  70 {
  71         int ret = dvb_register_adapter(&fc->dvb_adapter,
  72                                        "FlexCop Digital TV device", fc->owner,
  73                                        fc->dev, adapter_nr);
  74         if (ret < 0) {
  75                 err("error registering DVB adapter");
  76                 return ret;
  77         }
  78         fc->dvb_adapter.priv = fc;
  79
  80         fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
  81         fc->demux.priv = fc;
  82
  83         fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
  84
  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,&fc->mem_frontend);
 145                 fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
 146                 dvb_dmxdev_release(&fc->dmxdev);
 147                 dvb_dmx_release(&fc->demux);
 148                 dvb_unregister_adapter(&fc->dvb_adapter);
 149
 150                 deb_info("deinitialized dvb stuff\n");
 151         }
 152         fc->init_state &= ~FC_STATE_DVB_INIT;
 153 }
 154
 155 /* these methods are necessary to achieve the long-term-goal of hiding the
 156  * struct flexcop_device from the bus-parts */
 157 void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
 158 {
 159         dvb_dmx_swfilter(&fc->demux, buf, len);
 160 }
 161 EXPORT_SYMBOL(flexcop_pass_dmx_data);
 162
 163 void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
 164 {
 165         dvb_dmx_swfilter_packets(&fc->demux, buf, no);
 166 }
 167 EXPORT_SYMBOL(flexcop_pass_dmx_packets);
 168
 169 static void flexcop_reset(struct flexcop_device *fc)
 170 {
 171         flexcop_ibi_value v210,v204;
 172
 173 /* reset the flexcop itself */
 174         fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
 175
 176         v210.raw = 0;
 177         v210.sw_reset_210.reset_block_000 = 1;
 178         v210.sw_reset_210.reset_block_100 = 1;
 179         v210.sw_reset_210.reset_block_200 = 1;
 180         v210.sw_reset_210.reset_block_300 = 1;
 181         v210.sw_reset_210.reset_block_400 = 1;
 182         v210.sw_reset_210.reset_block_500 = 1;
 183         v210.sw_reset_210.reset_block_600 = 1;
 184         v210.sw_reset_210.reset_block_700 = 1;
 185         v210.sw_reset_210.Block_reset_enable = 0xb2;
 186
 187         v210.sw_reset_210.Special_controls = 0xc259;
 188
 189         fc->write_ibi_reg(fc,sw_reset_210,v210);
 190         msleep(1);
 191
 192 /* reset the periphical devices */
 193
 194         v204 = fc->read_ibi_reg(fc,misc_204);
 195         v204.misc_204.Per_reset_sig = 0;
 196         fc->write_ibi_reg(fc,misc_204,v204);
 197         msleep(1);
 198         v204.misc_204.Per_reset_sig = 1;
 199         fc->write_ibi_reg(fc,misc_204,v204);
 200 }
 201
 202 void flexcop_reset_block_300(struct flexcop_device *fc)
 203 {
 204         flexcop_ibi_value v208_save = fc->read_ibi_reg(fc,ctrl_208),
 205                                           v210 = fc->read_ibi_reg(fc,sw_reset_210);
 206
 207         deb_rdump("208: %08x, 210: %08x\n",v208_save.raw,v210.raw);
 208
 209         fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
 210
 211         v210.sw_reset_210.reset_block_300 = 1;
 212         v210.sw_reset_210.Block_reset_enable = 0xb2;
 213
 214         fc->write_ibi_reg(fc,sw_reset_210,v210);
 215         msleep(1);
 216
 217         fc->write_ibi_reg(fc,ctrl_208,v208_save);
 218 }
 219
 220 struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
 221 {
 222         void *bus;
 223         struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device), GFP_KERNEL);
 224         if (!fc) {
 225                 err("no memory");
 226                 return NULL;
 227         }
 228
 229         bus = kzalloc(bus_specific_len, GFP_KERNEL);
 230         if (!bus) {
 231                 err("no memory");
 232                 kfree(fc);
 233                 return NULL;
 234         }
 235
 236         fc->bus_specific = bus;
 237
 238         return fc;
 239 }
 240 EXPORT_SYMBOL(flexcop_device_kmalloc);
 241
 242 void flexcop_device_kfree(struct flexcop_device *fc)
 243 {
 244         kfree(fc->bus_specific);
 245         kfree(fc);
 246 }
 247 EXPORT_SYMBOL(flexcop_device_kfree);
 248
 249 int flexcop_device_initialize(struct flexcop_device *fc)
 250 {
 251         int ret;
 252         ibi_zero.raw = 0;
 253
 254         flexcop_reset(fc);
 255         flexcop_determine_revision(fc);
 256         flexcop_sram_init(fc);
 257         flexcop_hw_filter_init(fc);
 258
 259         flexcop_smc_ctrl(fc, 0);
 260
 261         if ((ret = flexcop_dvb_init(fc)))
 262                 goto error;
 263
 264         /* i2c has to be done before doing EEProm stuff -
 265          * because the EEProm is accessed via i2c */
 266         ret = flexcop_i2c_init(fc);
 267         if (ret)
 268                 goto error;
 269
 270         /* do the MAC address reading after initializing the dvb_adapter */
 271         if (fc->get_mac_addr(fc, 0) == 0) {
 272                 u8 *b = fc->dvb_adapter.proposed_mac;
 273                 info("MAC address = %02x:%02x:%02x:%02x:%02x:%02x", b[0],b[1],b[2],b[3],b[4],b[5]);
 274                 flexcop_set_mac_filter(fc,b);
 275                 flexcop_mac_filter_ctrl(fc,1);
 276         } else
 277                 warn("reading of MAC address failed.\n");
 278
 279         if ((ret = flexcop_frontend_init(fc)))
 280                 goto error;
 281
 282         flexcop_device_name(fc,"initialization of","complete");
 283
 284         return 0;
 285
 286 error:
 287         flexcop_device_exit(fc);
 288         return ret;
 289 }
 290 EXPORT_SYMBOL(flexcop_device_initialize);
 291
 292 void flexcop_device_exit(struct flexcop_device *fc)
 293 {
 294         flexcop_frontend_exit(fc);
 295         flexcop_i2c_exit(fc);
 296         flexcop_dvb_exit(fc);
 297 }
 298 EXPORT_SYMBOL(flexcop_device_exit);
 299
 300 static int flexcop_module_init(void)
 301 {
 302         info(DRIVER_NAME " loaded successfully");
 303         return 0;
 304 }
 305
 306 static void flexcop_module_cleanup(void)
 307 {
 308         info(DRIVER_NAME " unloaded successfully");
 309 }
 310
 311 module_init(flexcop_module_init);
 312 module_exit(flexcop_module_cleanup);
 313
 314 MODULE_AUTHOR(DRIVER_AUTHOR);
 315 MODULE_DESCRIPTION(DRIVER_NAME);
 316 MODULE_LICENSE("GPL");