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