diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/common/b2c2/flexcop.c | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/drivers/media/common/b2c2/flexcop.c b/drivers/media/common/b2c2/flexcop.c new file mode 100644 index 0000000000..e7a88a2d24 --- /dev/null +++ b/drivers/media/common/b2c2/flexcop.c @@ -0,0 +1,311 @@ +// SPDX-License-Identifier: LGPL-2.1-or-later +/* + * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III + * flexcop.c - main module part + * Copyright (C) 2004-9 Patrick Boettcher <patrick.boettcher@posteo.de> + * based on skystar2-driver Copyright (C) 2003 Vadim Catana, skystar@moldova.cc + * + * Acknowledgements: + * John Jurrius from BBTI, Inc. for extensive support + * with code examples and data books + * Bjarne Steinsbo, bjarne at steinsbo.com (some ideas for rewriting) + * + * Contributions to the skystar2-driver have been done by + * Vincenzo Di Massa, hawk.it at tiscalinet.it (several DiSEqC fixes) + * Roberto Ragusa, r.ragusa at libero.it (polishing, restyling the code) + * Uwe Bugla, uwe.bugla at gmx.de (doing tests, restyling code, writing docu) + * Niklas Peinecke, peinecke at gdv.uni-hannover.de (hardware pid/mac + * filtering) + */ + +#include "flexcop.h" + +#define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip" +#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@posteo.de" + +#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG +#define DEBSTATUS "" +#else +#define DEBSTATUS " (debugging is not enabled)" +#endif + +int b2c2_flexcop_debug; +EXPORT_SYMBOL_GPL(b2c2_flexcop_debug); +module_param_named(debug, b2c2_flexcop_debug, int, 0644); +MODULE_PARM_DESC(debug, + "set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram,32=reg,64=i2cdump (|-able))." + DEBSTATUS); +#undef DEBSTATUS + +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); + +/* global zero for ibi values */ +flexcop_ibi_value ibi_zero; + +static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed) +{ + struct flexcop_device *fc = dvbdmxfeed->demux->priv; + return flexcop_pid_feed_control(fc, dvbdmxfeed, 1); +} + +static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) +{ + struct flexcop_device *fc = dvbdmxfeed->demux->priv; + return flexcop_pid_feed_control(fc, dvbdmxfeed, 0); +} + +static int flexcop_dvb_init(struct flexcop_device *fc) +{ + int ret = dvb_register_adapter(&fc->dvb_adapter, + "FlexCop Digital TV device", fc->owner, + fc->dev, adapter_nr); + if (ret < 0) { + err("error registering DVB adapter"); + return ret; + } + fc->dvb_adapter.priv = fc; + + fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING + | DMX_MEMORY_BASED_FILTERING); + fc->demux.priv = fc; + fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED; + fc->demux.start_feed = flexcop_dvb_start_feed; + fc->demux.stop_feed = flexcop_dvb_stop_feed; + fc->demux.write_to_decoder = NULL; + + ret = dvb_dmx_init(&fc->demux); + if (ret < 0) { + err("dvb_dmx failed: error %d", ret); + goto err_dmx; + } + + fc->hw_frontend.source = DMX_FRONTEND_0; + + fc->dmxdev.filternum = fc->demux.feednum; + fc->dmxdev.demux = &fc->demux.dmx; + fc->dmxdev.capabilities = 0; + ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter); + if (ret < 0) { + err("dvb_dmxdev_init failed: error %d", ret); + goto err_dmx_dev; + } + + ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend); + if (ret < 0) { + err("adding hw_frontend to dmx failed: error %d", ret); + goto err_dmx_add_hw_frontend; + } + + fc->mem_frontend.source = DMX_MEMORY_FE; + ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend); + if (ret < 0) { + err("adding mem_frontend to dmx failed: error %d", ret); + goto err_dmx_add_mem_frontend; + } + + ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend); + if (ret < 0) { + err("connect frontend failed: error %d", ret); + goto err_connect_frontend; + } + + ret = dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx); + if (ret < 0) { + err("dvb_net_init failed: error %d", ret); + goto err_net; + } + + fc->init_state |= FC_STATE_DVB_INIT; + return 0; + +err_net: + fc->demux.dmx.disconnect_frontend(&fc->demux.dmx); +err_connect_frontend: + fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend); +err_dmx_add_mem_frontend: + fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend); +err_dmx_add_hw_frontend: + dvb_dmxdev_release(&fc->dmxdev); +err_dmx_dev: + dvb_dmx_release(&fc->demux); +err_dmx: + dvb_unregister_adapter(&fc->dvb_adapter); + return ret; +} + +static void flexcop_dvb_exit(struct flexcop_device *fc) +{ + if (fc->init_state & FC_STATE_DVB_INIT) { + dvb_net_release(&fc->dvbnet); + + fc->demux.dmx.close(&fc->demux.dmx); + fc->demux.dmx.remove_frontend(&fc->demux.dmx, + &fc->mem_frontend); + fc->demux.dmx.remove_frontend(&fc->demux.dmx, + &fc->hw_frontend); + dvb_dmxdev_release(&fc->dmxdev); + dvb_dmx_release(&fc->demux); + dvb_unregister_adapter(&fc->dvb_adapter); + deb_info("deinitialized dvb stuff\n"); + } + fc->init_state &= ~FC_STATE_DVB_INIT; +} + +/* these methods are necessary to achieve the long-term-goal of hiding the + * struct flexcop_device from the bus-parts */ +void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len) +{ + dvb_dmx_swfilter(&fc->demux, buf, len); +} +EXPORT_SYMBOL(flexcop_pass_dmx_data); + +void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no) +{ + dvb_dmx_swfilter_packets(&fc->demux, buf, no); +} +EXPORT_SYMBOL(flexcop_pass_dmx_packets); + +static void flexcop_reset(struct flexcop_device *fc) +{ + flexcop_ibi_value v210, v204; + + /* reset the flexcop itself */ + fc->write_ibi_reg(fc,ctrl_208,ibi_zero); + + v210.raw = 0; + v210.sw_reset_210.reset_block_000 = 1; + v210.sw_reset_210.reset_block_100 = 1; + v210.sw_reset_210.reset_block_200 = 1; + v210.sw_reset_210.reset_block_300 = 1; + v210.sw_reset_210.reset_block_400 = 1; + v210.sw_reset_210.reset_block_500 = 1; + v210.sw_reset_210.reset_block_600 = 1; + v210.sw_reset_210.reset_block_700 = 1; + v210.sw_reset_210.Block_reset_enable = 0xb2; + v210.sw_reset_210.Special_controls = 0xc259; + fc->write_ibi_reg(fc,sw_reset_210,v210); + msleep(1); + + /* reset the periphical devices */ + + v204 = fc->read_ibi_reg(fc,misc_204); + v204.misc_204.Per_reset_sig = 0; + fc->write_ibi_reg(fc,misc_204,v204); + msleep(1); + v204.misc_204.Per_reset_sig = 1; + fc->write_ibi_reg(fc,misc_204,v204); +} + +void flexcop_reset_block_300(struct flexcop_device *fc) +{ + flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208), + v210 = fc->read_ibi_reg(fc, sw_reset_210); + + deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw); + fc->write_ibi_reg(fc,ctrl_208,ibi_zero); + + v210.sw_reset_210.reset_block_300 = 1; + v210.sw_reset_210.Block_reset_enable = 0xb2; + + fc->write_ibi_reg(fc,sw_reset_210,v210); + fc->write_ibi_reg(fc,ctrl_208,v208_save); +} + +struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len) +{ + void *bus; + struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device), + GFP_KERNEL); + if (!fc) { + err("no memory"); + return NULL; + } + + bus = kzalloc(bus_specific_len, GFP_KERNEL); + if (!bus) { + err("no memory"); + kfree(fc); + return NULL; + } + + fc->bus_specific = bus; + + return fc; +} +EXPORT_SYMBOL(flexcop_device_kmalloc); + +void flexcop_device_kfree(struct flexcop_device *fc) +{ + kfree(fc->bus_specific); + kfree(fc); +} +EXPORT_SYMBOL(flexcop_device_kfree); + +int flexcop_device_initialize(struct flexcop_device *fc) +{ + int ret; + ibi_zero.raw = 0; + + flexcop_reset(fc); + flexcop_determine_revision(fc); + flexcop_sram_init(fc); + flexcop_hw_filter_init(fc); + flexcop_smc_ctrl(fc, 0); + + ret = flexcop_dvb_init(fc); + if (ret) + goto error; + + /* i2c has to be done before doing EEProm stuff - + * because the EEProm is accessed via i2c */ + ret = flexcop_i2c_init(fc); + if (ret) + goto error; + + /* do the MAC address reading after initializing the dvb_adapter */ + if (fc->get_mac_addr(fc, 0) == 0) { + u8 *b = fc->dvb_adapter.proposed_mac; + info("MAC address = %pM", b); + flexcop_set_mac_filter(fc,b); + flexcop_mac_filter_ctrl(fc,1); + } else + warn("reading of MAC address failed.\n"); + + ret = flexcop_frontend_init(fc); + if (ret) + goto error; + + flexcop_device_name(fc,"initialization of","complete"); + return 0; + +error: + flexcop_device_exit(fc); + return ret; +} +EXPORT_SYMBOL(flexcop_device_initialize); + +void flexcop_device_exit(struct flexcop_device *fc) +{ + flexcop_frontend_exit(fc); + flexcop_i2c_exit(fc); + flexcop_dvb_exit(fc); +} +EXPORT_SYMBOL(flexcop_device_exit); + +static int flexcop_module_init(void) +{ + info(DRIVER_NAME " loaded successfully"); + return 0; +} + +static void flexcop_module_cleanup(void) +{ + info(DRIVER_NAME " unloaded successfully"); +} + +module_init(flexcop_module_init); +module_exit(flexcop_module_cleanup); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_NAME); +MODULE_LICENSE("GPL"); |