1 // SPDX-License-Identifier: LGPL-2.1-or-later 2 /* 3 * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III 4 * flexcop.c - main module part 5 * Copyright (C) 2004-9 Patrick Boettcher <patrick.boettcher@posteo.de> 6 * based on skystar2-driver Copyright (C) 2003 Vadim Catana, skystar@moldova.cc 7 * 8 * Acknowledgements: 9 * John Jurrius from BBTI, Inc. for extensive support 10 * with code examples and data books 11 * Bjarne Steinsbo, bjarne at steinsbo.com (some ideas for rewriting) 12 * 13 * Contributions to the skystar2-driver have been done by 14 * Vincenzo Di Massa, hawk.it at tiscalinet.it (several DiSEqC fixes) 15 * Roberto Ragusa, r.ragusa at libero.it (polishing, restyling the code) 16 * Uwe Bugla, uwe.bugla at gmx.de (doing tests, restyling code, writing docu) 17 * Niklas Peinecke, peinecke at gdv.uni-hannover.de (hardware pid/mac 18 * filtering) 19 */ 20 21 #include "flexcop.h" 22 23 #define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip" 24 #define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@posteo.de" 25 26 #ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG 27 #define DEBSTATUS "" 28 #else 29 #define DEBSTATUS " (debugging is not enabled)" 30 #endif 31 32 int b2c2_flexcop_debug; 33 EXPORT_SYMBOL_GPL(b2c2_flexcop_debug); 34 module_param_named(debug, b2c2_flexcop_debug, int, 0644); 35 MODULE_PARM_DESC(debug, 36 "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram,32=reg,64=i2cdump (|-able))." 37 DEBSTATUS); 38 #undef DEBSTATUS 39 40 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 41 42 /* global zero for ibi values */ 43 flexcop_ibi_value ibi_zero; 44 45 static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed) 46 { 47 struct flexcop_device *fc = dvbdmxfeed->demux->priv; 48 return flexcop_pid_feed_control(fc, dvbdmxfeed, 1); 49 } 50 51 static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) 52 { 53 struct flexcop_device *fc = dvbdmxfeed->demux->priv; 54 return flexcop_pid_feed_control(fc, dvbdmxfeed, 0); 55 } 56 57 static int flexcop_dvb_init(struct flexcop_device *fc) 58 { 59 int ret = dvb_register_adapter(&fc->dvb_adapter, 60 "FlexCop Digital TV device", fc->owner, 61 fc->dev, adapter_nr); 62 if (ret < 0) { 63 err("error registering DVB adapter"); 64 return ret; 65 } 66 fc->dvb_adapter.priv = fc; 67 68 fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING 69 | DMX_MEMORY_BASED_FILTERING); 70 fc->demux.priv = fc; 71 fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED; 72 fc->demux.start_feed = flexcop_dvb_start_feed; 73 fc->demux.stop_feed = flexcop_dvb_stop_feed; 74 fc->demux.write_to_decoder = NULL; 75 76 ret = dvb_dmx_init(&fc->demux); 77 if (ret < 0) { 78 err("dvb_dmx failed: error %d", ret); 79 goto err_dmx; 80 } 81 82 fc->hw_frontend.source = DMX_FRONTEND_0; 83 84 fc->dmxdev.filternum = fc->demux.feednum; 85 fc->dmxdev.demux = &fc->demux.dmx; 86 fc->dmxdev.capabilities = 0; 87 ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter); 88 if (ret < 0) { 89 err("dvb_dmxdev_init failed: error %d", ret); 90 goto err_dmx_dev; 91 } 92 93 ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend); 94 if (ret < 0) { 95 err("adding hw_frontend to dmx failed: error %d", ret); 96 goto err_dmx_add_hw_frontend; 97 } 98 99 fc->mem_frontend.source = DMX_MEMORY_FE; 100 ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend); 101 if (ret < 0) { 102 err("adding mem_frontend to dmx failed: error %d", ret); 103 goto err_dmx_add_mem_frontend; 104 } 105 106 ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend); 107 if (ret < 0) { 108 err("connect frontend failed: error %d", ret); 109 goto err_connect_frontend; 110 } 111 112 ret = dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx); 113 if (ret < 0) { 114 err("dvb_net_init failed: error %d", ret); 115 goto err_net; 116 } 117 118 fc->init_state |= FC_STATE_DVB_INIT; 119 return 0; 120 121 err_net: 122 fc->demux.dmx.disconnect_frontend(&fc->demux.dmx); 123 err_connect_frontend: 124 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend); 125 err_dmx_add_mem_frontend: 126 fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend); 127 err_dmx_add_hw_frontend: 128 dvb_dmxdev_release(&fc->dmxdev); 129 err_dmx_dev: 130 dvb_dmx_release(&fc->demux); 131 err_dmx: 132 dvb_unregister_adapter(&fc->dvb_adapter); 133 return ret; 134 } 135 136 static void flexcop_dvb_exit(struct flexcop_device *fc) 137 { 138 if (fc->init_state & FC_STATE_DVB_INIT) { 139 dvb_net_release(&fc->dvbnet); 140 141 fc->demux.dmx.close(&fc->demux.dmx); 142 fc->demux.dmx.remove_frontend(&fc->demux.dmx, 143 &fc->mem_frontend); 144 fc->demux.dmx.remove_frontend(&fc->demux.dmx, 145 &fc->hw_frontend); 146 dvb_dmxdev_release(&fc->dmxdev); 147 dvb_dmx_release(&fc->demux); 148 dvb_unregister_adapter(&fc->dvb_adapter); 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_block_000 = 1; 177 v210.sw_reset_210.reset_block_100 = 1; 178 v210.sw_reset_210.reset_block_200 = 1; 179 v210.sw_reset_210.reset_block_300 = 1; 180 v210.sw_reset_210.reset_block_400 = 1; 181 v210.sw_reset_210.reset_block_500 = 1; 182 v210.sw_reset_210.reset_block_600 = 1; 183 v210.sw_reset_210.reset_block_700 = 1; 184 v210.sw_reset_210.Block_reset_enable = 0xb2; 185 v210.sw_reset_210.Special_controls = 0xc259; 186 fc->write_ibi_reg(fc,sw_reset_210,v210); 187 msleep(1); 188 189 /* reset the periphical devices */ 190 191 v204 = fc->read_ibi_reg(fc,misc_204); 192 v204.misc_204.Per_reset_sig = 0; 193 fc->write_ibi_reg(fc,misc_204,v204); 194 msleep(1); 195 v204.misc_204.Per_reset_sig = 1; 196 fc->write_ibi_reg(fc,misc_204,v204); 197 } 198 199 void flexcop_reset_block_300(struct flexcop_device *fc) 200 { 201 flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208), 202 v210 = fc->read_ibi_reg(fc, sw_reset_210); 203 204 deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw); 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 fc->write_ibi_reg(fc,ctrl_208,v208_save); 212 } 213 214 struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len) 215 { 216 void *bus; 217 struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device), 218 GFP_KERNEL); 219 if (!fc) { 220 err("no memory"); 221 return NULL; 222 } 223 224 bus = kzalloc(bus_specific_len, GFP_KERNEL); 225 if (!bus) { 226 err("no memory"); 227 kfree(fc); 228 return NULL; 229 } 230 231 fc->bus_specific = bus; 232 233 return fc; 234 } 235 EXPORT_SYMBOL(flexcop_device_kmalloc); 236 237 void flexcop_device_kfree(struct flexcop_device *fc) 238 { 239 kfree(fc->bus_specific); 240 kfree(fc); 241 } 242 EXPORT_SYMBOL(flexcop_device_kfree); 243 244 int flexcop_device_initialize(struct flexcop_device *fc) 245 { 246 int ret; 247 ibi_zero.raw = 0; 248 249 flexcop_reset(fc); 250 flexcop_determine_revision(fc); 251 flexcop_sram_init(fc); 252 flexcop_hw_filter_init(fc); 253 flexcop_smc_ctrl(fc, 0); 254 255 ret = flexcop_dvb_init(fc); 256 if (ret) 257 goto error; 258 259 /* i2c has to be done before doing EEProm stuff - 260 * because the EEProm is accessed via i2c */ 261 ret = flexcop_i2c_init(fc); 262 if (ret) 263 goto error; 264 265 /* do the MAC address reading after initializing the dvb_adapter */ 266 if (fc->get_mac_addr(fc, 0) == 0) { 267 u8 *b = fc->dvb_adapter.proposed_mac; 268 info("MAC address = %pM", b); 269 flexcop_set_mac_filter(fc,b); 270 flexcop_mac_filter_ctrl(fc,1); 271 } else 272 warn("reading of MAC address failed.\n"); 273 274 ret = flexcop_frontend_init(fc); 275 if (ret) 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"); 312