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1// SPDX-License-Identifier: GPL-2.0-only2/* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.03 * receiver4 *5 * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@posteo.de)6 *7 * partly based on the SDK published by Nebula Electronics8 *9 * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information10 */11#include "digitv.h"12 13#include "mt352.h"14#include "nxt6000.h"15 16/* debug */17static int dvb_usb_digitv_debug;18module_param_named(debug,dvb_usb_digitv_debug, int, 0644);19MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);20 21DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);22 23#define deb_rc(args...) dprintk(dvb_usb_digitv_debug,0x01,args)24 25static int digitv_ctrl_msg(struct dvb_usb_device *d,26 u8 cmd, u8 vv, u8 *wbuf, int wlen, u8 *rbuf, int rlen)27{28 struct digitv_state *st = d->priv;29 int ret, wo;30 31 wo = (rbuf == NULL || rlen == 0); /* write-only */32 33 if (wlen > 4 || rlen > 4)34 return -EIO;35 36 memset(st->sndbuf, 0, 7);37 memset(st->rcvbuf, 0, 7);38 39 st->sndbuf[0] = cmd;40 st->sndbuf[1] = vv;41 st->sndbuf[2] = wo ? wlen : rlen;42 43 if (wo) {44 memcpy(&st->sndbuf[3], wbuf, wlen);45 ret = dvb_usb_generic_write(d, st->sndbuf, 7);46 } else {47 ret = dvb_usb_generic_rw(d, st->sndbuf, 7, st->rcvbuf, 7, 10);48 memcpy(rbuf, &st->rcvbuf[3], rlen);49 }50 return ret;51}52 53/* I2C */54static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)55{56 struct dvb_usb_device *d = i2c_get_adapdata(adap);57 int i;58 59 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)60 return -EAGAIN;61 62 if (num > 2)63 warn("more than 2 i2c messages at a time is not handled yet. TODO.");64 65 for (i = 0; i < num; i++) {66 if (msg[i].len < 1) {67 i = -EOPNOTSUPP;68 break;69 }70 /* write/read request */71 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {72 if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0,73 msg[i+1].buf,msg[i+1].len) < 0)74 break;75 i++;76 } else77 if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0],78 &msg[i].buf[1],msg[i].len-1,NULL,0) < 0)79 break;80 }81 82 mutex_unlock(&d->i2c_mutex);83 return i;84}85 86static u32 digitv_i2c_func(struct i2c_adapter *adapter)87{88 return I2C_FUNC_I2C;89}90 91static struct i2c_algorithm digitv_i2c_algo = {92 .master_xfer = digitv_i2c_xfer,93 .functionality = digitv_i2c_func,94};95 96/* Callbacks for DVB USB */97static int digitv_identify_state(struct usb_device *udev,98 const struct dvb_usb_device_properties *props,99 const struct dvb_usb_device_description **desc,100 int *cold)101{102 *cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;103 return 0;104}105 106static int digitv_mt352_demod_init(struct dvb_frontend *fe)107{108 static u8 reset_buf[] = { 0x89, 0x38, 0x8a, 0x2d, 0x50, 0x80 };109 static u8 init_buf[] = { 0x68, 0xa0, 0x8e, 0x40, 0x53, 0x50,110 0x67, 0x20, 0x7d, 0x01, 0x7c, 0x00, 0x7a, 0x00,111 0x79, 0x20, 0x57, 0x05, 0x56, 0x31, 0x88, 0x0f,112 0x75, 0x32 };113 int i;114 115 for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2)116 mt352_write(fe, &reset_buf[i], 2);117 118 msleep(1);119 120 for (i = 0; i < ARRAY_SIZE(init_buf); i += 2)121 mt352_write(fe, &init_buf[i], 2);122 123 return 0;124}125 126static struct mt352_config digitv_mt352_config = {127 .demod_init = digitv_mt352_demod_init,128};129 130static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe)131{132 struct dvb_usb_adapter *adap = fe->dvb->priv;133 u8 b[5];134 135 fe->ops.tuner_ops.calc_regs(fe, b, sizeof(b));136 if (fe->ops.i2c_gate_ctrl)137 fe->ops.i2c_gate_ctrl(fe, 1);138 return digitv_ctrl_msg(adap->dev, USB_WRITE_TUNER, 0, &b[1], 4, NULL, 0);139}140 141static struct nxt6000_config digitv_nxt6000_config = {142 .clock_inversion = 1,143};144 145static int digitv_frontend_attach(struct dvb_usb_adapter *adap)146{147 struct digitv_state *st = adap->dev->priv;148 149 adap->fe_adap[0].fe = dvb_attach(mt352_attach, &digitv_mt352_config,150 &adap->dev->i2c_adap);151 if ((adap->fe_adap[0].fe) != NULL) {152 st->is_nxt6000 = 0;153 return 0;154 }155 adap->fe_adap[0].fe = dvb_attach(nxt6000_attach,156 &digitv_nxt6000_config,157 &adap->dev->i2c_adap);158 if ((adap->fe_adap[0].fe) != NULL) {159 st->is_nxt6000 = 1;160 return 0;161 }162 return -EIO;163}164 165static int digitv_tuner_attach(struct dvb_usb_adapter *adap)166{167 struct digitv_state *st = adap->dev->priv;168 169 if (!dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60, NULL, DVB_PLL_TDED4))170 return -ENODEV;171 172 if (st->is_nxt6000)173 adap->fe_adap[0].fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params;174 175 return 0;176}177 178static struct rc_map_table rc_map_digitv_table[] = {179 { 0x5f55, KEY_0 },180 { 0x6f55, KEY_1 },181 { 0x9f55, KEY_2 },182 { 0xaf55, KEY_3 },183 { 0x5f56, KEY_4 },184 { 0x6f56, KEY_5 },185 { 0x9f56, KEY_6 },186 { 0xaf56, KEY_7 },187 { 0x5f59, KEY_8 },188 { 0x6f59, KEY_9 },189 { 0x9f59, KEY_TV },190 { 0xaf59, KEY_AUX },191 { 0x5f5a, KEY_DVD },192 { 0x6f5a, KEY_POWER },193 { 0x9f5a, KEY_CAMERA }, /* labelled 'Picture' */194 { 0xaf5a, KEY_AUDIO },195 { 0x5f65, KEY_INFO },196 { 0x6f65, KEY_F13 }, /* 16:9 */197 { 0x9f65, KEY_F14 }, /* 14:9 */198 { 0xaf65, KEY_EPG },199 { 0x5f66, KEY_EXIT },200 { 0x6f66, KEY_MENU },201 { 0x9f66, KEY_UP },202 { 0xaf66, KEY_DOWN },203 { 0x5f69, KEY_LEFT },204 { 0x6f69, KEY_RIGHT },205 { 0x9f69, KEY_ENTER },206 { 0xaf69, KEY_CHANNELUP },207 { 0x5f6a, KEY_CHANNELDOWN },208 { 0x6f6a, KEY_VOLUMEUP },209 { 0x9f6a, KEY_VOLUMEDOWN },210 { 0xaf6a, KEY_RED },211 { 0x5f95, KEY_GREEN },212 { 0x6f95, KEY_YELLOW },213 { 0x9f95, KEY_BLUE },214 { 0xaf95, KEY_SUBTITLE },215 { 0x5f96, KEY_F15 }, /* AD */216 { 0x6f96, KEY_TEXT },217 { 0x9f96, KEY_MUTE },218 { 0xaf96, KEY_REWIND },219 { 0x5f99, KEY_STOP },220 { 0x6f99, KEY_PLAY },221 { 0x9f99, KEY_FASTFORWARD },222 { 0xaf99, KEY_F16 }, /* chapter */223 { 0x5f9a, KEY_PAUSE },224 { 0x6f9a, KEY_PLAY },225 { 0x9f9a, KEY_RECORD },226 { 0xaf9a, KEY_F17 }, /* picture in picture */227 { 0x5fa5, KEY_KPPLUS }, /* zoom in */228 { 0x6fa5, KEY_KPMINUS }, /* zoom out */229 { 0x9fa5, KEY_F18 }, /* capture */230 { 0xafa5, KEY_F19 }, /* web */231 { 0x5fa6, KEY_EMAIL },232 { 0x6fa6, KEY_PHONE },233 { 0x9fa6, KEY_PC },234};235 236static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state)237{238 struct rc_map_table *entry;239 int ret, i;240 u8 key[4];241 u8 b[4] = { 0 };242 243 *event = 0;244 *state = REMOTE_NO_KEY_PRESSED;245 246 ret = digitv_ctrl_msg(d, USB_READ_REMOTE, 0, NULL, 0, key, 4);247 if (ret)248 return ret;249 250 /* Tell the device we've read the remote. Not sure how necessary251 this is, but the Nebula SDK does it. */252 ret = digitv_ctrl_msg(d, USB_WRITE_REMOTE, 0, b, 4, NULL, 0);253 if (ret)254 return ret;255 256 /* if something is inside the buffer, simulate key press */257 if (key[0] != 0) {258 for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) {259 entry = &d->props.rc.legacy.rc_map_table[i];260 261 if (rc5_custom(entry) == key[0] &&262 rc5_data(entry) == key[1]) {263 *event = entry->keycode;264 *state = REMOTE_KEY_PRESSED;265 return 0;266 }267 }268 269 deb_rc("key: %*ph\n", 4, key);270 }271 272 return 0;273}274 275/* DVB USB Driver stuff */276static struct dvb_usb_device_properties digitv_properties;277 278static int digitv_probe(struct usb_interface *intf,279 const struct usb_device_id *id)280{281 struct dvb_usb_device *d;282 int ret = dvb_usb_device_init(intf, &digitv_properties, THIS_MODULE, &d,283 adapter_nr);284 if (ret == 0) {285 u8 b[4] = { 0 };286 287 if (d != NULL) { /* do that only when the firmware is loaded */288 b[0] = 1;289 digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0);290 291 b[0] = 0;292 digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);293 }294 }295 return ret;296}297 298enum {299 ANCHOR_NEBULA_DIGITV,300};301 302static struct usb_device_id digitv_table[] = {303 DVB_USB_DEV(ANCHOR, ANCHOR_NEBULA_DIGITV),304 { }305};306 307MODULE_DEVICE_TABLE (usb, digitv_table);308 309static struct dvb_usb_device_properties digitv_properties = {310 .caps = DVB_USB_IS_AN_I2C_ADAPTER,311 312 .usb_ctrl = CYPRESS_FX2,313 .firmware = "dvb-usb-digitv-02.fw",314 315 .size_of_priv = sizeof(struct digitv_state),316 317 .num_adapters = 1,318 .adapter = {319 {320 .num_frontends = 1,321 .fe = {{322 .frontend_attach = digitv_frontend_attach,323 .tuner_attach = digitv_tuner_attach,324 325 /* parameter for the MPEG2-data transfer */326 .stream = {327 .type = USB_BULK,328 .count = 7,329 .endpoint = 0x02,330 .u = {331 .bulk = {332 .buffersize = 4096,333 }334 }335 },336 }},337 }338 },339 .identify_state = digitv_identify_state,340 341 .rc.legacy = {342 .rc_interval = 1000,343 .rc_map_table = rc_map_digitv_table,344 .rc_map_size = ARRAY_SIZE(rc_map_digitv_table),345 .rc_query = digitv_rc_query,346 },347 348 .i2c_algo = &digitv_i2c_algo,349 350 .generic_bulk_ctrl_endpoint = 0x01,351 352 .num_device_descs = 1,353 .devices = {354 { "Nebula Electronics uDigiTV DVB-T USB2.0)",355 { &digitv_table[ANCHOR_NEBULA_DIGITV], NULL },356 { NULL },357 },358 { NULL },359 }360};361 362static struct usb_driver digitv_driver = {363 .name = "dvb_usb_digitv",364 .probe = digitv_probe,365 .disconnect = dvb_usb_device_exit,366 .id_table = digitv_table,367};368 369module_usb_driver(digitv_driver);370 371MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");372MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");373MODULE_VERSION("1.0-alpha");374MODULE_LICENSE("GPL");375