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 /* 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,fc->dev)) < 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         return 0;
 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
 134 static void flexcop_dvb_exit(struct flexcop_device *fc)
 135 {
 136         if (fc->init_state & FC_STATE_DVB_INIT) {
 137                 dvb_net_release(&fc->dvbnet);
 138
 139                 fc->demux.dmx.close(&fc->demux.dmx);
 140                 fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->mem_frontend);
 141                 fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
 142                 dvb_dmxdev_release(&fc->dmxdev);
 143                 dvb_dmx_release(&fc->demux);
 144                 dvb_unregister_adapter(&fc->dvb_adapter);
 145
 146                 deb_info("deinitialized dvb stuff\n");
 147         }
 148         fc->init_state &= ~FC_STATE_DVB_INIT;
 149 }
 150
 151 /* these methods are necessary to achieve the long-term-goal of hiding the
 152  * struct flexcop_device from the bus-parts */
 153 void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
 154 {
 155         dvb_dmx_swfilter(&fc->demux, buf, len);
 156 }
 157 EXPORT_SYMBOL(flexcop_pass_dmx_data);
 158
 159 void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
 160 {
 161         dvb_dmx_swfilter_packets(&fc->demux, buf, no);
 162 }
 163 EXPORT_SYMBOL(flexcop_pass_dmx_packets);
 164
 165 static void flexcop_reset(struct flexcop_device *fc)
 166 {
 167         flexcop_ibi_value v210,v204;
 168
 169 /* reset the flexcop itself */
 170         fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
 171
 172         v210.raw = 0;
 173         v210.sw_reset_210.reset_block_000 = 1;
 174         v210.sw_reset_210.reset_block_100 = 1;
 175         v210.sw_reset_210.reset_block_200 = 1;
 176         v210.sw_reset_210.reset_block_300 = 1;
 177         v210.sw_reset_210.reset_block_400 = 1;
 178         v210.sw_reset_210.reset_block_500 = 1;
 179         v210.sw_reset_210.reset_block_600 = 1;
 180         v210.sw_reset_210.reset_block_700 = 1;
 181         v210.sw_reset_210.Block_reset_enable = 0xb2;
 182
 183         v210.sw_reset_210.Special_controls = 0xc259;
 184
 185         fc->write_ibi_reg(fc,sw_reset_210,v210);
 186         msleep(1);
 187
 188 /* reset the periphical devices */
 189
 190         v204 = fc->read_ibi_reg(fc,misc_204);
 191         v204.misc_204.Per_reset_sig = 0;
 192         fc->write_ibi_reg(fc,misc_204,v204);
 193         msleep(1);
 194         v204.misc_204.Per_reset_sig = 1;
 195         fc->write_ibi_reg(fc,misc_204,v204);
 196 }
 197
 198 void flexcop_reset_block_300(struct flexcop_device *fc)
 199 {
 200         flexcop_ibi_value v208_save = fc->read_ibi_reg(fc,ctrl_208),
 201                                           v210 = fc->read_ibi_reg(fc,sw_reset_210);
 202
 203         deb_rdump("208: %08x, 210: %08x\n",v208_save.raw,v210.raw);
 204
 205         fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
 206
 207         v210.sw_reset_210.reset_block_300 = 1;
 208         v210.sw_reset_210.Block_reset_enable = 0xb2;
 209
 210         fc->write_ibi_reg(fc,sw_reset_210,v210);
 211         msleep(1);
 212
 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), GFP_KERNEL);
 220         if (!fc) {
 221                 err("no memory");
 222                 return NULL;
 223         }
 224
 225         bus = kzalloc(bus_specific_len, GFP_KERNEL);
 226         if (!bus) {
 227                 err("no memory");
 228                 kfree(fc);
 229                 return NULL;
 230         }
 231
 232         fc->bus_specific = bus;
 233
 234         return fc;
 235 }
 236 EXPORT_SYMBOL(flexcop_device_kmalloc);
 237
 238 void flexcop_device_kfree(struct flexcop_device *fc)
 239 {
 240         kfree(fc->bus_specific);
 241         kfree(fc);
 242 }
 243 EXPORT_SYMBOL(flexcop_device_kfree);
 244
 245 int flexcop_device_initialize(struct flexcop_device *fc)
 246 {
 247         int ret;
 248         ibi_zero.raw = 0;
 249
 250         flexcop_reset(fc);
 251         flexcop_determine_revision(fc);
 252         flexcop_sram_init(fc);
 253         flexcop_hw_filter_init(fc);
 254
 255         flexcop_smc_ctrl(fc, 0);
 256
 257         if ((ret = flexcop_dvb_init(fc)))
 258                 goto error;
 259
 260         /* do the MAC address reading after initializing the dvb_adapter */
 261         if (fc->get_mac_addr(fc, 0) == 0) {
 262                 u8 *b = fc->dvb_adapter.proposed_mac;
 263                 info("MAC address = %02x:%02x:%02x:%02x:%02x:%02x", b[0],b[1],b[2],b[3],b[4],b[5]);
 264                 flexcop_set_mac_filter(fc,b);
 265                 flexcop_mac_filter_ctrl(fc,1);
 266         } else
 267                 warn("reading of MAC address failed.\n");
 268
 269
 270         if ((ret = flexcop_i2c_init(fc)))
 271                 goto error;
 272
 273         if ((ret = flexcop_frontend_init(fc)))
 274                 goto error;
 275
 276         flexcop_device_name(fc,"initialization of","complete");
 277
 278         return 0;
 279
 280 error:
 281         flexcop_device_exit(fc);
 282         return ret;
 283 }
 284 EXPORT_SYMBOL(flexcop_device_initialize);
 285
 286 void flexcop_device_exit(struct flexcop_device *fc)
 287 {
 288         flexcop_frontend_exit(fc);
 289         flexcop_i2c_exit(fc);
 290         flexcop_dvb_exit(fc);
 291 }
 292 EXPORT_SYMBOL(flexcop_device_exit);
 293
 294 static int flexcop_module_init(void)
 295 {
 296         info(DRIVER_NAME " loaded successfully");
 297         return 0;
 298 }
 299
 300 static void flexcop_module_cleanup(void)
 301 {
 302         info(DRIVER_NAME " unloaded successfully");
 303 }
 304
 305 module_init(flexcop_module_init);
 306 module_exit(flexcop_module_cleanup);
 307
 308 MODULE_AUTHOR(DRIVER_AUTHOR);
 309 MODULE_DESCRIPTION(DRIVER_NAME);
 310 MODULE_LICENSE("GPL");