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");