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 /* write/read request */ 67 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) { 68 if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0, 69 msg[i+1].buf,msg[i+1].len) < 0) 70 break; 71 i++; 72 } else 73 if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0], 74 &msg[i].buf[1],msg[i].len-1,NULL,0) < 0) 75 break; 76 } 77 78 mutex_unlock(&d->i2c_mutex); 79 return i; 80 } 81 82 static u32 digitv_i2c_func(struct i2c_adapter *adapter) 83 { 84 return I2C_FUNC_I2C; 85 } 86 87 static struct i2c_algorithm digitv_i2c_algo = { 88 .master_xfer = digitv_i2c_xfer, 89 .functionality = digitv_i2c_func, 90 }; 91 92 /* Callbacks for DVB USB */ 93 static int digitv_identify_state(struct usb_device *udev, 94 const struct dvb_usb_device_properties *props, 95 const struct dvb_usb_device_description **desc, 96 int *cold) 97 { 98 *cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0; 99 return 0; 100 } 101 102 static int digitv_mt352_demod_init(struct dvb_frontend *fe) 103 { 104 static u8 reset_buf[] = { 0x89, 0x38, 0x8a, 0x2d, 0x50, 0x80 }; 105 static u8 init_buf[] = { 0x68, 0xa0, 0x8e, 0x40, 0x53, 0x50, 106 0x67, 0x20, 0x7d, 0x01, 0x7c, 0x00, 0x7a, 0x00, 107 0x79, 0x20, 0x57, 0x05, 0x56, 0x31, 0x88, 0x0f, 108 0x75, 0x32 }; 109 int i; 110 111 for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2) 112 mt352_write(fe, &reset_buf[i], 2); 113 114 msleep(1); 115 116 for (i = 0; i < ARRAY_SIZE(init_buf); i += 2) 117 mt352_write(fe, &init_buf[i], 2); 118 119 return 0; 120 } 121 122 static struct mt352_config digitv_mt352_config = { 123 .demod_init = digitv_mt352_demod_init, 124 }; 125 126 static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe) 127 { 128 struct dvb_usb_adapter *adap = fe->dvb->priv; 129 u8 b[5]; 130 131 fe->ops.tuner_ops.calc_regs(fe, b, sizeof(b)); 132 if (fe->ops.i2c_gate_ctrl) 133 fe->ops.i2c_gate_ctrl(fe, 1); 134 return digitv_ctrl_msg(adap->dev, USB_WRITE_TUNER, 0, &b[1], 4, NULL, 0); 135 } 136 137 static struct nxt6000_config digitv_nxt6000_config = { 138 .clock_inversion = 1, 139 }; 140 141 static int digitv_frontend_attach(struct dvb_usb_adapter *adap) 142 { 143 struct digitv_state *st = adap->dev->priv; 144 145 adap->fe_adap[0].fe = dvb_attach(mt352_attach, &digitv_mt352_config, 146 &adap->dev->i2c_adap); 147 if ((adap->fe_adap[0].fe) != NULL) { 148 st->is_nxt6000 = 0; 149 return 0; 150 } 151 adap->fe_adap[0].fe = dvb_attach(nxt6000_attach, 152 &digitv_nxt6000_config, 153 &adap->dev->i2c_adap); 154 if ((adap->fe_adap[0].fe) != NULL) { 155 st->is_nxt6000 = 1; 156 return 0; 157 } 158 return -EIO; 159 } 160 161 static int digitv_tuner_attach(struct dvb_usb_adapter *adap) 162 { 163 struct digitv_state *st = adap->dev->priv; 164 165 if (!dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60, NULL, DVB_PLL_TDED4)) 166 return -ENODEV; 167 168 if (st->is_nxt6000) 169 adap->fe_adap[0].fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params; 170 171 return 0; 172 } 173 174 static struct rc_map_table rc_map_digitv_table[] = { 175 { 0x5f55, KEY_0 }, 176 { 0x6f55, KEY_1 }, 177 { 0x9f55, KEY_2 }, 178 { 0xaf55, KEY_3 }, 179 { 0x5f56, KEY_4 }, 180 { 0x6f56, KEY_5 }, 181 { 0x9f56, KEY_6 }, 182 { 0xaf56, KEY_7 }, 183 { 0x5f59, KEY_8 }, 184 { 0x6f59, KEY_9 }, 185 { 0x9f59, KEY_TV }, 186 { 0xaf59, KEY_AUX }, 187 { 0x5f5a, KEY_DVD }, 188 { 0x6f5a, KEY_POWER }, 189 { 0x9f5a, KEY_CAMERA }, /* labelled 'Picture' */ 190 { 0xaf5a, KEY_AUDIO }, 191 { 0x5f65, KEY_INFO }, 192 { 0x6f65, KEY_F13 }, /* 16:9 */ 193 { 0x9f65, KEY_F14 }, /* 14:9 */ 194 { 0xaf65, KEY_EPG }, 195 { 0x5f66, KEY_EXIT }, 196 { 0x6f66, KEY_MENU }, 197 { 0x9f66, KEY_UP }, 198 { 0xaf66, KEY_DOWN }, 199 { 0x5f69, KEY_LEFT }, 200 { 0x6f69, KEY_RIGHT }, 201 { 0x9f69, KEY_ENTER }, 202 { 0xaf69, KEY_CHANNELUP }, 203 { 0x5f6a, KEY_CHANNELDOWN }, 204 { 0x6f6a, KEY_VOLUMEUP }, 205 { 0x9f6a, KEY_VOLUMEDOWN }, 206 { 0xaf6a, KEY_RED }, 207 { 0x5f95, KEY_GREEN }, 208 { 0x6f95, KEY_YELLOW }, 209 { 0x9f95, KEY_BLUE }, 210 { 0xaf95, KEY_SUBTITLE }, 211 { 0x5f96, KEY_F15 }, /* AD */ 212 { 0x6f96, KEY_TEXT }, 213 { 0x9f96, KEY_MUTE }, 214 { 0xaf96, KEY_REWIND }, 215 { 0x5f99, KEY_STOP }, 216 { 0x6f99, KEY_PLAY }, 217 { 0x9f99, KEY_FASTFORWARD }, 218 { 0xaf99, KEY_F16 }, /* chapter */ 219 { 0x5f9a, KEY_PAUSE }, 220 { 0x6f9a, KEY_PLAY }, 221 { 0x9f9a, KEY_RECORD }, 222 { 0xaf9a, KEY_F17 }, /* picture in picture */ 223 { 0x5fa5, KEY_KPPLUS }, /* zoom in */ 224 { 0x6fa5, KEY_KPMINUS }, /* zoom out */ 225 { 0x9fa5, KEY_F18 }, /* capture */ 226 { 0xafa5, KEY_F19 }, /* web */ 227 { 0x5fa6, KEY_EMAIL }, 228 { 0x6fa6, KEY_PHONE }, 229 { 0x9fa6, KEY_PC }, 230 }; 231 232 static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state) 233 { 234 struct rc_map_table *entry; 235 int ret, i; 236 u8 key[4]; 237 u8 b[4] = { 0 }; 238 239 *event = 0; 240 *state = REMOTE_NO_KEY_PRESSED; 241 242 ret = digitv_ctrl_msg(d, USB_READ_REMOTE, 0, NULL, 0, key, 4); 243 if (ret) 244 return ret; 245 246 /* Tell the device we've read the remote. Not sure how necessary 247 this is, but the Nebula SDK does it. */ 248 ret = digitv_ctrl_msg(d, USB_WRITE_REMOTE, 0, b, 4, NULL, 0); 249 if (ret) 250 return ret; 251 252 /* if something is inside the buffer, simulate key press */ 253 if (key[0] != 0) { 254 for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) { 255 entry = &d->props.rc.legacy.rc_map_table[i]; 256 257 if (rc5_custom(entry) == key[0] && 258 rc5_data(entry) == key[1]) { 259 *event = entry->keycode; 260 *state = REMOTE_KEY_PRESSED; 261 return 0; 262 } 263 } 264 265 deb_rc("key: %*ph\n", 4, key); 266 } 267 268 return 0; 269 } 270 271 /* DVB USB Driver stuff */ 272 static struct dvb_usb_device_properties digitv_properties; 273 274 static int digitv_probe(struct usb_interface *intf, 275 const struct usb_device_id *id) 276 { 277 struct dvb_usb_device *d; 278 int ret = dvb_usb_device_init(intf, &digitv_properties, THIS_MODULE, &d, 279 adapter_nr); 280 if (ret == 0) { 281 u8 b[4] = { 0 }; 282 283 if (d != NULL) { /* do that only when the firmware is loaded */ 284 b[0] = 1; 285 digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0); 286 287 b[0] = 0; 288 digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0); 289 } 290 } 291 return ret; 292 } 293 294 static struct usb_device_id digitv_table [] = { 295 { USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) }, 296 { } /* Terminating entry */ 297 }; 298 MODULE_DEVICE_TABLE (usb, digitv_table); 299 300 static struct dvb_usb_device_properties digitv_properties = { 301 .caps = DVB_USB_IS_AN_I2C_ADAPTER, 302 303 .usb_ctrl = CYPRESS_FX2, 304 .firmware = "dvb-usb-digitv-02.fw", 305 306 .size_of_priv = sizeof(struct digitv_state), 307 308 .num_adapters = 1, 309 .adapter = { 310 { 311 .num_frontends = 1, 312 .fe = {{ 313 .frontend_attach = digitv_frontend_attach, 314 .tuner_attach = digitv_tuner_attach, 315 316 /* parameter for the MPEG2-data transfer */ 317 .stream = { 318 .type = USB_BULK, 319 .count = 7, 320 .endpoint = 0x02, 321 .u = { 322 .bulk = { 323 .buffersize = 4096, 324 } 325 } 326 }, 327 }}, 328 } 329 }, 330 .identify_state = digitv_identify_state, 331 332 .rc.legacy = { 333 .rc_interval = 1000, 334 .rc_map_table = rc_map_digitv_table, 335 .rc_map_size = ARRAY_SIZE(rc_map_digitv_table), 336 .rc_query = digitv_rc_query, 337 }, 338 339 .i2c_algo = &digitv_i2c_algo, 340 341 .generic_bulk_ctrl_endpoint = 0x01, 342 343 .num_device_descs = 1, 344 .devices = { 345 { "Nebula Electronics uDigiTV DVB-T USB2.0)", 346 { &digitv_table[0], NULL }, 347 { NULL }, 348 }, 349 { NULL }, 350 } 351 }; 352 353 static struct usb_driver digitv_driver = { 354 .name = "dvb_usb_digitv", 355 .probe = digitv_probe, 356 .disconnect = dvb_usb_device_exit, 357 .id_table = digitv_table, 358 }; 359 360 module_usb_driver(digitv_driver); 361 362 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>"); 363 MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0"); 364 MODULE_VERSION("1.0-alpha"); 365 MODULE_LICENSE("GPL"); 366