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 (|-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)) < 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         goto success;
 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 success:
 134         return 0;
 135 }
 136
 137 static void flexcop_dvb_exit(struct flexcop_device *fc)
 138 {
 139         if (fc->init_state & FC_STATE_DVB_INIT) {
 140                 dvb_net_release(&fc->dvbnet);
 141
 142                 fc->demux.dmx.close(&fc->demux.dmx);
 143                 fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->mem_frontend);
 144                 fc->demux.dmx.remove_frontend(&fc->demux.dmx,&fc->hw_frontend);
 145                 dvb_dmxdev_release(&fc->dmxdev);
 146                 dvb_dmx_release(&fc->demux);
 147                 dvb_unregister_adapter(&fc->dvb_adapter);
 148
 149                 deb_info("deinitialized dvb stuff\n");
 150         }
 151         fc->init_state &= ~FC_STATE_DVB_INIT;
 152 }
 153
 154 /* these methods are necessary to achieve the long-term-goal of hiding the
 155  * struct flexcop_device from the bus-parts */
 156 void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
 157 {
 158         dvb_dmx_swfilter(&fc->demux, buf, len);
 159 }
 160 EXPORT_SYMBOL(flexcop_pass_dmx_data);
 161
 162 void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
 163 {
 164         dvb_dmx_swfilter_packets(&fc->demux, buf, no);
 165 }
 166 EXPORT_SYMBOL(flexcop_pass_dmx_packets);
 167
 168 static void flexcop_reset(struct flexcop_device *fc)
 169 {
 170         flexcop_ibi_value v210,v204;
 171
 172 /* reset the flexcop itself */
 173         fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
 174
 175         v210.raw = 0;
 176         v210.sw_reset_210.reset_blocks = 0xff;
 177         v210.sw_reset_210.Block_reset_enable = 0xb2;
 178         fc->write_ibi_reg(fc,sw_reset_210,v210);
 179
 180 /* reset the periphical devices */
 181
 182         v204 = fc->read_ibi_reg(fc,misc_204);
 183         v204.misc_204.Per_reset_sig = 0;
 184         fc->write_ibi_reg(fc,misc_204,v204);
 185         v204.misc_204.Per_reset_sig = 1;
 186         fc->write_ibi_reg(fc,misc_204,v204);
 187 }
 188
 189 struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
 190 {
 191         void *bus;
 192         struct flexcop_device *fc = kmalloc(sizeof(struct flexcop_device), GFP_KERNEL);
 193         if (!fc) {
 194                 err("no memory");
 195                 return NULL;
 196         }
 197         memset(fc, 0, sizeof(struct flexcop_device));
 198
 199         bus = kmalloc(bus_specific_len, GFP_KERNEL);
 200         if (!bus) {
 201                 err("no memory");
 202                 kfree(fc);
 203                 return NULL;
 204         }
 205         memset(bus, 0, bus_specific_len);
 206
 207         fc->bus_specific = bus;
 208
 209         return fc;
 210 }
 211 EXPORT_SYMBOL(flexcop_device_kmalloc);
 212
 213 void flexcop_device_kfree(struct flexcop_device *fc)
 214 {
 215         kfree(fc->bus_specific);
 216         kfree(fc);
 217 }
 218 EXPORT_SYMBOL(flexcop_device_kfree);
 219
 220 int flexcop_device_initialize(struct flexcop_device *fc)
 221 {
 222         int ret;
 223         ibi_zero.raw = 0;
 224
 225         flexcop_reset(fc);
 226         flexcop_determine_revision(fc);
 227         flexcop_sram_init(fc);
 228         flexcop_hw_filter_init(fc);
 229
 230         flexcop_smc_ctrl(fc, 0);
 231
 232         if ((ret = flexcop_dvb_init(fc)))
 233                 goto error;
 234
 235         /* do the MAC address reading after initializing the dvb_adapter */
 236         if (fc->get_mac_addr(fc, 0) == 0) {
 237                 u8 *b = fc->dvb_adapter.proposed_mac;
 238                 info("MAC address = %02x:%02x:%02x:%02x:%02x:%02x", b[0],b[1],b[2],b[3],b[4],b[5]);
 239                 flexcop_set_mac_filter(fc,b);
 240                 flexcop_mac_filter_ctrl(fc,1);
 241         } else
 242                 warn("reading of MAC address failed.\n");
 243
 244
 245         if ((ret = flexcop_i2c_init(fc)))
 246                 goto error;
 247
 248         if ((ret = flexcop_frontend_init(fc)))
 249                 goto error;
 250
 251         flexcop_device_name(fc,"initialization of","complete");
 252
 253         ret = 0;
 254         goto success;
 255 error:
 256         flexcop_device_exit(fc);
 257 success:
 258         return ret;
 259 }
 260 EXPORT_SYMBOL(flexcop_device_initialize);
 261
 262 void flexcop_device_exit(struct flexcop_device *fc)
 263 {
 264         flexcop_frontend_exit(fc);
 265         flexcop_i2c_exit(fc);
 266         flexcop_dvb_exit(fc);
 267 }
 268 EXPORT_SYMBOL(flexcop_device_exit);
 269
 270 static int flexcop_module_init(void)
 271 {
 272         info(DRIVER_NAME " loaded successfully");
 273         return 0;
 274 }
 275
 276 static void flexcop_module_cleanup(void)
 277 {
 278         info(DRIVER_NAME " unloaded successfully");
 279 }
 280
 281 module_init(flexcop_module_init);
 282 module_exit(flexcop_module_cleanup);
 283
 284 MODULE_AUTHOR(DRIVER_AUTHOR);
 285 MODULE_DESCRIPTION(DRIVER_NAME);
 286 MODULE_LICENSE("GPL");