1 // SPDX-License-Identifier: GPL-2.0-only 2 /* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0 3 * receiver 4 * 5 * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@posteo.de) 6 * 7 * partly based on the SDK published by Nebula Electronics 8 * 9 * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information 10 */ 11 #include "digitv.h" 12 13 #include "mt352.h" 14 #include "nxt6000.h" 15 16 /* debug */ 17 static int dvb_usb_digitv_debug; 18 module_param_named(debug,dvb_usb_digitv_debug, int, 0644); 19 MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS); 20 21 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 22 23 #define deb_rc(args...) dprintk(dvb_usb_digitv_debug,0x01,args) 24 25 static 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 */ 54 static 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 } else 77 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 86 static u32 digitv_i2c_func(struct i2c_adapter *adapter) 87 { 88 return I2C_FUNC_I2C; 89 } 90 91 static struct i2c_algorithm digitv_i2c_algo = { 92 .master_xfer = digitv_i2c_xfer, 93 .functionality = digitv_i2c_func, 94 }; 95 96 /* Callbacks for DVB USB */ 97 static 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 } 105 106 static 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 } 125 126 static struct mt352_config digitv_mt352_config = { 127 .demod_init = digitv_mt352_demod_init, 128 }; 129 130 static 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 } 140 141 static struct nxt6000_config digitv_nxt6000_config = { 142 .clock_inversion = 1, 143 }; 144 145 static 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 } 164 165 static 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 } 177 178 static 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 }; 235 236 static 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 necessary 251 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 */ 276 static struct dvb_usb_device_properties digitv_properties; 277 278 static 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 } 297 298 enum { 299 ANCHOR_NEBULA_DIGITV, 300 }; 301 302 static struct usb_device_id digitv_table[] = { 303 DVB_USB_DEV(ANCHOR, ANCHOR_NEBULA_DIGITV), 304 { } 305 }; 306 307 MODULE_DEVICE_TABLE (usb, digitv_table); 308 309 static 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 }; 361 362 static 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 }; 368 369 module_usb_driver(digitv_driver); 370 371 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>"); 372 MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0"); 373 MODULE_VERSION("1.0-alpha"); 374 MODULE_LICENSE("GPL"); 375