linux/drivers/media/common/b2c2/flexcop.c
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   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
  30#include "flexcop.h"
  31
  32#define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip"
  33#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@posteo.de"
  34
  35#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
  36#define DEBSTATUS ""
  37#else
  38#define DEBSTATUS " (debugging is not enabled)"
  39#endif
  40
  41int b2c2_flexcop_debug;
  42EXPORT_SYMBOL_GPL(b2c2_flexcop_debug);
  43module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
  44MODULE_PARM_DESC(debug,
  45                "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram,32=reg (|-able))."
  46                DEBSTATUS);
  47#undef DEBSTATUS
  48
  49DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  50
  51/* global zero for ibi values */
  52flexcop_ibi_value ibi_zero;
  53
  54static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
  55{
  56        struct flexcop_device *fc = dvbdmxfeed->demux->priv;
  57        return flexcop_pid_feed_control(fc, dvbdmxfeed, 1);
  58}
  59
  60static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
  61{
  62        struct flexcop_device *fc = dvbdmxfeed->demux->priv;
  63        return flexcop_pid_feed_control(fc, dvbdmxfeed, 0);
  64}
  65
  66static int flexcop_dvb_init(struct flexcop_device *fc)
  67{
  68        int ret = dvb_register_adapter(&fc->dvb_adapter,
  69                        "FlexCop Digital TV device", fc->owner,
  70                        fc->dev, adapter_nr);
  71        if (ret < 0) {
  72                err("error registering DVB adapter");
  73                return ret;
  74        }
  75        fc->dvb_adapter.priv = fc;
  76
  77        fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING
  78                        | DMX_MEMORY_BASED_FILTERING);
  79        fc->demux.priv = fc;
  80        fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
  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        ret = dvb_dmx_init(&fc->demux);
  86        if (ret < 0) {
  87                err("dvb_dmx failed: error %d", ret);
  88                goto err_dmx;
  89        }
  90
  91        fc->hw_frontend.source = DMX_FRONTEND_0;
  92
  93        fc->dmxdev.filternum = fc->demux.feednum;
  94        fc->dmxdev.demux = &fc->demux.dmx;
  95        fc->dmxdev.capabilities = 0;
  96        ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter);
  97        if (ret < 0) {
  98                err("dvb_dmxdev_init failed: error %d", ret);
  99                goto err_dmx_dev;
 100        }
 101
 102        ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend);
 103        if (ret < 0) {
 104                err("adding hw_frontend to dmx failed: error %d", ret);
 105                goto err_dmx_add_hw_frontend;
 106        }
 107
 108        fc->mem_frontend.source = DMX_MEMORY_FE;
 109        ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend);
 110        if (ret < 0) {
 111                err("adding mem_frontend to dmx failed: error %d", ret);
 112                goto err_dmx_add_mem_frontend;
 113        }
 114
 115        ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend);
 116        if (ret < 0) {
 117                err("connect frontend failed: error %d", ret);
 118                goto err_connect_frontend;
 119        }
 120
 121        ret = dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
 122        if (ret < 0) {
 123                err("dvb_net_init failed: error %d", ret);
 124                goto err_net;
 125        }
 126
 127        fc->init_state |= FC_STATE_DVB_INIT;
 128        return 0;
 129
 130err_net:
 131        fc->demux.dmx.disconnect_frontend(&fc->demux.dmx);
 132err_connect_frontend:
 133        fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
 134err_dmx_add_mem_frontend:
 135        fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
 136err_dmx_add_hw_frontend:
 137        dvb_dmxdev_release(&fc->dmxdev);
 138err_dmx_dev:
 139        dvb_dmx_release(&fc->demux);
 140err_dmx:
 141        dvb_unregister_adapter(&fc->dvb_adapter);
 142        return ret;
 143}
 144
 145static void flexcop_dvb_exit(struct flexcop_device *fc)
 146{
 147        if (fc->init_state & FC_STATE_DVB_INIT) {
 148                dvb_net_release(&fc->dvbnet);
 149
 150                fc->demux.dmx.close(&fc->demux.dmx);
 151                fc->demux.dmx.remove_frontend(&fc->demux.dmx,
 152                        &fc->mem_frontend);
 153                fc->demux.dmx.remove_frontend(&fc->demux.dmx,
 154                        &fc->hw_frontend);
 155                dvb_dmxdev_release(&fc->dmxdev);
 156                dvb_dmx_release(&fc->demux);
 157                dvb_unregister_adapter(&fc->dvb_adapter);
 158                deb_info("deinitialized dvb stuff\n");
 159        }
 160        fc->init_state &= ~FC_STATE_DVB_INIT;
 161}
 162
 163/* these methods are necessary to achieve the long-term-goal of hiding the
 164 * struct flexcop_device from the bus-parts */
 165void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
 166{
 167        dvb_dmx_swfilter(&fc->demux, buf, len);
 168}
 169EXPORT_SYMBOL(flexcop_pass_dmx_data);
 170
 171void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
 172{
 173        dvb_dmx_swfilter_packets(&fc->demux, buf, no);
 174}
 175EXPORT_SYMBOL(flexcop_pass_dmx_packets);
 176
 177static void flexcop_reset(struct flexcop_device *fc)
 178{
 179        flexcop_ibi_value v210, v204;
 180
 181        /* reset the flexcop itself */
 182        fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
 183
 184        v210.raw = 0;
 185        v210.sw_reset_210.reset_block_000 = 1;
 186        v210.sw_reset_210.reset_block_100 = 1;
 187        v210.sw_reset_210.reset_block_200 = 1;
 188        v210.sw_reset_210.reset_block_300 = 1;
 189        v210.sw_reset_210.reset_block_400 = 1;
 190        v210.sw_reset_210.reset_block_500 = 1;
 191        v210.sw_reset_210.reset_block_600 = 1;
 192        v210.sw_reset_210.reset_block_700 = 1;
 193        v210.sw_reset_210.Block_reset_enable = 0xb2;
 194        v210.sw_reset_210.Special_controls = 0xc259;
 195        fc->write_ibi_reg(fc,sw_reset_210,v210);
 196        msleep(1);
 197
 198        /* reset the periphical devices */
 199
 200        v204 = fc->read_ibi_reg(fc,misc_204);
 201        v204.misc_204.Per_reset_sig = 0;
 202        fc->write_ibi_reg(fc,misc_204,v204);
 203        msleep(1);
 204        v204.misc_204.Per_reset_sig = 1;
 205        fc->write_ibi_reg(fc,misc_204,v204);
 206}
 207
 208void flexcop_reset_block_300(struct flexcop_device *fc)
 209{
 210        flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208),
 211                          v210 = fc->read_ibi_reg(fc, sw_reset_210);
 212
 213        deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw);
 214        fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
 215
 216        v210.sw_reset_210.reset_block_300 = 1;
 217        v210.sw_reset_210.Block_reset_enable = 0xb2;
 218
 219        fc->write_ibi_reg(fc,sw_reset_210,v210);
 220        fc->write_ibi_reg(fc,ctrl_208,v208_save);
 221}
 222
 223struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
 224{
 225        void *bus;
 226        struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device),
 227                                GFP_KERNEL);
 228        if (!fc) {
 229                err("no memory");
 230                return NULL;
 231        }
 232
 233        bus = kzalloc(bus_specific_len, GFP_KERNEL);
 234        if (!bus) {
 235                err("no memory");
 236                kfree(fc);
 237                return NULL;
 238        }
 239
 240        fc->bus_specific = bus;
 241
 242        return fc;
 243}
 244EXPORT_SYMBOL(flexcop_device_kmalloc);
 245
 246void flexcop_device_kfree(struct flexcop_device *fc)
 247{
 248        kfree(fc->bus_specific);
 249        kfree(fc);
 250}
 251EXPORT_SYMBOL(flexcop_device_kfree);
 252
 253int flexcop_device_initialize(struct flexcop_device *fc)
 254{
 255        int ret;
 256        ibi_zero.raw = 0;
 257
 258        flexcop_reset(fc);
 259        flexcop_determine_revision(fc);
 260        flexcop_sram_init(fc);
 261        flexcop_hw_filter_init(fc);
 262        flexcop_smc_ctrl(fc, 0);
 263
 264        ret = flexcop_dvb_init(fc);
 265        if (ret)
 266                goto error;
 267
 268        /* i2c has to be done before doing EEProm stuff -
 269         * because the EEProm is accessed via i2c */
 270        ret = flexcop_i2c_init(fc);
 271        if (ret)
 272                goto error;
 273
 274        /* do the MAC address reading after initializing the dvb_adapter */
 275        if (fc->get_mac_addr(fc, 0) == 0) {
 276                u8 *b = fc->dvb_adapter.proposed_mac;
 277                info("MAC address = %pM", b);
 278                flexcop_set_mac_filter(fc,b);
 279                flexcop_mac_filter_ctrl(fc,1);
 280        } else
 281                warn("reading of MAC address failed.\n");
 282
 283        ret = flexcop_frontend_init(fc);
 284        if (ret)
 285                goto error;
 286
 287        flexcop_device_name(fc,"initialization of","complete");
 288        return 0;
 289
 290error:
 291        flexcop_device_exit(fc);
 292        return ret;
 293}
 294EXPORT_SYMBOL(flexcop_device_initialize);
 295
 296void flexcop_device_exit(struct flexcop_device *fc)
 297{
 298        flexcop_frontend_exit(fc);
 299        flexcop_i2c_exit(fc);
 300        flexcop_dvb_exit(fc);
 301}
 302EXPORT_SYMBOL(flexcop_device_exit);
 303
 304static int flexcop_module_init(void)
 305{
 306        info(DRIVER_NAME " loaded successfully");
 307        return 0;
 308}
 309
 310static void flexcop_module_cleanup(void)
 311{
 312        info(DRIVER_NAME " unloaded successfully");
 313}
 314
 315module_init(flexcop_module_init);
 316module_exit(flexcop_module_cleanup);
 317
 318MODULE_AUTHOR(DRIVER_AUTHOR);
 319MODULE_DESCRIPTION(DRIVER_NAME);
 320MODULE_LICENSE("GPL");
 321