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1// SPDX-License-Identifier: GPL-2.0-only2/* Common methods for dibusb-based-receivers.3 *4 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)5 *6 * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information7 */8 9#include "dibusb.h"10 11/* Max transfer size done by I2C transfer functions */12#define MAX_XFER_SIZE 6413 14static int debug;15module_param(debug, int, 0644);16MODULE_PARM_DESC(debug, "set debugging level (1=info (|-able))." DVB_USB_DEBUG_STATUS);17MODULE_DESCRIPTION("Common methods for dibusb-based receivers");18MODULE_LICENSE("GPL");19 20#define deb_info(args...) dprintk(debug,0x01,args)21 22/* common stuff used by the different dibusb modules */23int dibusb_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)24{25 if (adap->priv != NULL) {26 struct dibusb_state *st = adap->priv;27 if (st->ops.fifo_ctrl != NULL)28 if (st->ops.fifo_ctrl(adap->fe_adap[0].fe, onoff)) {29 err("error while controlling the fifo of the demod.");30 return -ENODEV;31 }32 }33 return 0;34}35EXPORT_SYMBOL(dibusb_streaming_ctrl);36 37int dibusb_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid, int onoff)38{39 if (adap->priv != NULL) {40 struct dibusb_state *st = adap->priv;41 if (st->ops.pid_ctrl != NULL)42 st->ops.pid_ctrl(adap->fe_adap[0].fe,43 index, pid, onoff);44 }45 return 0;46}47EXPORT_SYMBOL(dibusb_pid_filter);48 49int dibusb_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)50{51 if (adap->priv != NULL) {52 struct dibusb_state *st = adap->priv;53 if (st->ops.pid_parse != NULL)54 if (st->ops.pid_parse(adap->fe_adap[0].fe, onoff) < 0)55 err("could not handle pid_parser");56 }57 return 0;58}59EXPORT_SYMBOL(dibusb_pid_filter_ctrl);60 61int dibusb_power_ctrl(struct dvb_usb_device *d, int onoff)62{63 u8 *b;64 int ret;65 66 b = kmalloc(3, GFP_KERNEL);67 if (!b)68 return -ENOMEM;69 70 b[0] = DIBUSB_REQ_SET_IOCTL;71 b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;72 b[2] = onoff ? DIBUSB_IOCTL_POWER_WAKEUP : DIBUSB_IOCTL_POWER_SLEEP;73 74 ret = dvb_usb_generic_write(d, b, 3);75 76 kfree(b);77 78 msleep(10);79 80 return ret;81}82EXPORT_SYMBOL(dibusb_power_ctrl);83 84int dibusb2_0_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)85{86 int ret;87 u8 *b;88 89 b = kmalloc(3, GFP_KERNEL);90 if (!b)91 return -ENOMEM;92 93 if ((ret = dibusb_streaming_ctrl(adap,onoff)) < 0)94 goto ret;95 96 if (onoff) {97 b[0] = DIBUSB_REQ_SET_STREAMING_MODE;98 b[1] = 0x00;99 ret = dvb_usb_generic_write(adap->dev, b, 2);100 if (ret < 0)101 goto ret;102 }103 104 b[0] = DIBUSB_REQ_SET_IOCTL;105 b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;106 ret = dvb_usb_generic_write(adap->dev, b, 3);107 108ret:109 kfree(b);110 return ret;111}112EXPORT_SYMBOL(dibusb2_0_streaming_ctrl);113 114int dibusb2_0_power_ctrl(struct dvb_usb_device *d, int onoff)115{116 u8 *b;117 int ret;118 119 if (!onoff)120 return 0;121 122 b = kmalloc(3, GFP_KERNEL);123 if (!b)124 return -ENOMEM;125 126 b[0] = DIBUSB_REQ_SET_IOCTL;127 b[1] = DIBUSB_IOCTL_CMD_POWER_MODE;128 b[2] = DIBUSB_IOCTL_POWER_WAKEUP;129 130 ret = dvb_usb_generic_write(d, b, 3);131 132 kfree(b);133 134 return ret;135}136EXPORT_SYMBOL(dibusb2_0_power_ctrl);137 138static int dibusb_i2c_msg(struct dvb_usb_device *d, u8 addr,139 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)140{141 u8 *sndbuf;142 int ret, wo, len;143 144 /* write only ? */145 wo = (rbuf == NULL || rlen == 0);146 147 len = 2 + wlen + (wo ? 0 : 2);148 149 sndbuf = kmalloc(MAX_XFER_SIZE, GFP_KERNEL);150 if (!sndbuf)151 return -ENOMEM;152 153 if (4 + wlen > MAX_XFER_SIZE) {154 warn("i2c wr: len=%d is too big!\n", wlen);155 ret = -EOPNOTSUPP;156 goto ret;157 }158 159 sndbuf[0] = wo ? DIBUSB_REQ_I2C_WRITE : DIBUSB_REQ_I2C_READ;160 sndbuf[1] = (addr << 1) | (wo ? 0 : 1);161 162 memcpy(&sndbuf[2], wbuf, wlen);163 164 if (!wo) {165 sndbuf[wlen + 2] = (rlen >> 8) & 0xff;166 sndbuf[wlen + 3] = rlen & 0xff;167 }168 169 ret = dvb_usb_generic_rw(d, sndbuf, len, rbuf, rlen, 0);170 171ret:172 kfree(sndbuf);173 return ret;174}175 176/*177 * I2C master xfer function178 */179static int dibusb_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)180{181 struct dvb_usb_device *d = i2c_get_adapdata(adap);182 int i;183 184 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)185 return -EAGAIN;186 187 for (i = 0; i < num; i++) {188 /* write/read request */189 if (i+1 < num && (msg[i].flags & I2C_M_RD) == 0190 && (msg[i+1].flags & I2C_M_RD)) {191 if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,192 msg[i+1].buf,msg[i+1].len) < 0)193 break;194 i++;195 } else if ((msg[i].flags & I2C_M_RD) == 0) {196 if (dibusb_i2c_msg(d, msg[i].addr, msg[i].buf,msg[i].len,NULL,0) < 0)197 break;198 } else if (msg[i].addr != 0x50) {199 /* 0x50 is the address of the eeprom - we need to protect it200 * from dibusb's bad i2c implementation: reads without201 * writing the offset before are forbidden */202 if (dibusb_i2c_msg(d, msg[i].addr, NULL, 0, msg[i].buf, msg[i].len) < 0)203 break;204 }205 }206 207 mutex_unlock(&d->i2c_mutex);208 return i;209}210 211static u32 dibusb_i2c_func(struct i2c_adapter *adapter)212{213 return I2C_FUNC_I2C;214}215 216struct i2c_algorithm dibusb_i2c_algo = {217 .master_xfer = dibusb_i2c_xfer,218 .functionality = dibusb_i2c_func,219};220EXPORT_SYMBOL(dibusb_i2c_algo);221 222int dibusb_read_eeprom_byte(struct dvb_usb_device *d, u8 offs, u8 *val)223{224 u8 *buf;225 int rc;226 227 buf = kzalloc(2, GFP_KERNEL);228 if (!buf)229 return -ENOMEM;230 231 buf[0] = offs;232 233 rc = dibusb_i2c_msg(d, 0x50, &buf[0], 1, &buf[1], 1);234 *val = buf[1];235 kfree(buf);236 237 return rc;238}239EXPORT_SYMBOL(dibusb_read_eeprom_byte);240 241/*242 * common remote control stuff243 */244struct rc_map_table rc_map_dibusb_table[] = {245 /* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */246 { 0x0016, KEY_POWER },247 { 0x0010, KEY_MUTE },248 { 0x0003, KEY_1 },249 { 0x0001, KEY_2 },250 { 0x0006, KEY_3 },251 { 0x0009, KEY_4 },252 { 0x001d, KEY_5 },253 { 0x001f, KEY_6 },254 { 0x000d, KEY_7 },255 { 0x0019, KEY_8 },256 { 0x001b, KEY_9 },257 { 0x0015, KEY_0 },258 { 0x0005, KEY_CHANNELUP },259 { 0x0002, KEY_CHANNELDOWN },260 { 0x001e, KEY_VOLUMEUP },261 { 0x000a, KEY_VOLUMEDOWN },262 { 0x0011, KEY_RECORD },263 { 0x0017, KEY_FAVORITES }, /* Heart symbol - Channel list. */264 { 0x0014, KEY_PLAY },265 { 0x001a, KEY_STOP },266 { 0x0040, KEY_REWIND },267 { 0x0012, KEY_FASTFORWARD },268 { 0x000e, KEY_PREVIOUS }, /* Recall - Previous channel. */269 { 0x004c, KEY_PAUSE },270 { 0x004d, KEY_SCREEN }, /* Full screen mode. */271 { 0x0054, KEY_AUDIO }, /* MTS - Switch to secondary audio. */272 /* additional keys TwinHan VisionPlus, the Artec seemingly not have */273 { 0x000c, KEY_CANCEL }, /* Cancel */274 { 0x001c, KEY_EPG }, /* EPG */275 { 0x0000, KEY_TAB }, /* Tab */276 { 0x0048, KEY_INFO }, /* Preview */277 { 0x0004, KEY_LIST }, /* RecordList */278 { 0x000f, KEY_TEXT }, /* Teletext */279 /* Key codes for the KWorld/ADSTech/JetWay remote. */280 { 0x8612, KEY_POWER },281 { 0x860f, KEY_SELECT }, /* source */282 { 0x860c, KEY_UNKNOWN }, /* scan */283 { 0x860b, KEY_EPG },284 { 0x8610, KEY_MUTE },285 { 0x8601, KEY_1 },286 { 0x8602, KEY_2 },287 { 0x8603, KEY_3 },288 { 0x8604, KEY_4 },289 { 0x8605, KEY_5 },290 { 0x8606, KEY_6 },291 { 0x8607, KEY_7 },292 { 0x8608, KEY_8 },293 { 0x8609, KEY_9 },294 { 0x860a, KEY_0 },295 { 0x8618, KEY_ZOOM },296 { 0x861c, KEY_UNKNOWN }, /* preview */297 { 0x8613, KEY_UNKNOWN }, /* snap */298 { 0x8600, KEY_UNDO },299 { 0x861d, KEY_RECORD },300 { 0x860d, KEY_STOP },301 { 0x860e, KEY_PAUSE },302 { 0x8616, KEY_PLAY },303 { 0x8611, KEY_BACK },304 { 0x8619, KEY_FORWARD },305 { 0x8614, KEY_UNKNOWN }, /* pip */306 { 0x8615, KEY_ESC },307 { 0x861a, KEY_UP },308 { 0x861e, KEY_DOWN },309 { 0x861f, KEY_LEFT },310 { 0x861b, KEY_RIGHT },311 312 /* Key codes for the DiBcom MOD3000 remote. */313 { 0x8000, KEY_MUTE },314 { 0x8001, KEY_TEXT },315 { 0x8002, KEY_HOME },316 { 0x8003, KEY_POWER },317 318 { 0x8004, KEY_RED },319 { 0x8005, KEY_GREEN },320 { 0x8006, KEY_YELLOW },321 { 0x8007, KEY_BLUE },322 323 { 0x8008, KEY_DVD },324 { 0x8009, KEY_AUDIO },325 { 0x800a, KEY_IMAGES }, /* Pictures */326 { 0x800b, KEY_VIDEO },327 328 { 0x800c, KEY_BACK },329 { 0x800d, KEY_UP },330 { 0x800e, KEY_RADIO },331 { 0x800f, KEY_EPG },332 333 { 0x8010, KEY_LEFT },334 { 0x8011, KEY_OK },335 { 0x8012, KEY_RIGHT },336 { 0x8013, KEY_UNKNOWN }, /* SAP */337 338 { 0x8014, KEY_TV },339 { 0x8015, KEY_DOWN },340 { 0x8016, KEY_MENU }, /* DVD Menu */341 { 0x8017, KEY_LAST },342 343 { 0x8018, KEY_RECORD },344 { 0x8019, KEY_STOP },345 { 0x801a, KEY_PAUSE },346 { 0x801b, KEY_PLAY },347 348 { 0x801c, KEY_PREVIOUS },349 { 0x801d, KEY_REWIND },350 { 0x801e, KEY_FASTFORWARD },351 { 0x801f, KEY_NEXT},352 353 { 0x8040, KEY_1 },354 { 0x8041, KEY_2 },355 { 0x8042, KEY_3 },356 { 0x8043, KEY_CHANNELUP },357 358 { 0x8044, KEY_4 },359 { 0x8045, KEY_5 },360 { 0x8046, KEY_6 },361 { 0x8047, KEY_CHANNELDOWN },362 363 { 0x8048, KEY_7 },364 { 0x8049, KEY_8 },365 { 0x804a, KEY_9 },366 { 0x804b, KEY_VOLUMEUP },367 368 { 0x804c, KEY_CLEAR },369 { 0x804d, KEY_0 },370 { 0x804e, KEY_ENTER },371 { 0x804f, KEY_VOLUMEDOWN },372};373EXPORT_SYMBOL(rc_map_dibusb_table);374 375int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)376{377 u8 *buf;378 int ret;379 380 buf = kmalloc(5, GFP_KERNEL);381 if (!buf)382 return -ENOMEM;383 384 buf[0] = DIBUSB_REQ_POLL_REMOTE;385 386 ret = dvb_usb_generic_rw(d, buf, 1, buf, 5, 0);387 if (ret < 0)388 goto ret;389 390 dvb_usb_nec_rc_key_to_event(d, buf, event, state);391 392 if (buf[0] != 0)393 deb_info("key: %*ph\n", 5, buf);394 395ret:396 kfree(buf);397 398 return ret;399}400EXPORT_SYMBOL(dibusb_rc_query);401