/* Runs on the radio thread */
static void
initTavaruaRadio(hal::FMRadioSettings &aInfo)
{
mozilla::ScopedClose fd(sRadioFD);
char version[64];
int rc;
snprintf(version, sizeof(version), "%d", sTavaruaVersion);
property_set("hw.fm.version", version);
/* Set the mode for soc downloader */
property_set("hw.fm.mode", "normal");
/* start fm_dl service */
property_set("ctl.start", "fm_dl");
/*
* Fix bug 800263. Wait until the FM radio chips initialization is done
* then set other properties, or the system will hang and reboot. This
* work around is from codeaurora
* (git://codeaurora.org/platform/frameworks/base.git).
*/
for (int i = 0; i < 4; ++i) {
sleep(1);
char value[PROPERTY_VALUE_MAX];
property_get("hw.fm.init", value, "0");
if (!strcmp(value, "1")) {
break;
}
}
rc = setControl(V4L2_CID_PRIVATE_TAVARUA_STATE, FM_RECV);
if (rc < 0) {
HAL_LOG(("Unable to turn on radio |%s|", strerror(errno)));
return;
}
int preEmphasis = aInfo.preEmphasis() <= 50;
rc = setControl(V4L2_CID_PRIVATE_TAVARUA_EMPHASIS, preEmphasis);
if (rc) {
HAL_LOG(("Unable to configure preemphasis"));
return;
}
rc = setControl(V4L2_CID_PRIVATE_TAVARUA_RDS_STD, 0);
if (rc) {
HAL_LOG(("Unable to configure RDS"));
return;
}
int spacing;
switch (aInfo.spaceType()) {
case 50:
spacing = FM_CH_SPACE_50KHZ;
break;
case 100:
spacing = FM_CH_SPACE_100KHZ;
break;
case 200:
spacing = FM_CH_SPACE_200KHZ;
break;
default:
HAL_LOG(("Unsupported space value - %d", aInfo.spaceType()));
return;
}
rc = setControl(V4L2_CID_PRIVATE_TAVARUA_SPACING, spacing);
if (rc) {
HAL_LOG(("Unable to configure spacing"));
return;
}
/*
* Frequency conversions
*
* HAL uses units of 1k for frequencies
* V4L2 uses units of 62.5kHz
* Multiplying by (10000 / 625) converts from HAL units to V4L2.
*/
struct v4l2_tuner tuner = {0};
tuner.rangelow = (aInfo.lowerLimit() * 10000) / 625;
tuner.rangehigh = (aInfo.upperLimit() * 10000) / 625;
rc = ioctl(fd, VIDIOC_S_TUNER, &tuner);
if (rc < 0) {
HAL_LOG(("Unable to adjust band limits"));
return;
}
rc = setControl(V4L2_CID_PRIVATE_TAVARUA_REGION, TAVARUA_REGION_OTHER);
if (rc < 0) {
HAL_LOG(("Unable to configure region"));
return;
}
// Some devices do not support analog audio routing. This should be
// indicated by the 'ro.moz.fm.noAnalog' property at build time.
char propval[PROPERTY_VALUE_MAX];
property_get("ro.moz.fm.noAnalog", propval, "");
bool noAnalog = !strcmp(propval, "true");
rc = setControl(V4L2_CID_PRIVATE_TAVARUA_SET_AUDIO_PATH,
noAnalog ? FM_DIGITAL_PATH : FM_ANALOG_PATH);
if (rc < 0) {
HAL_LOG(("Unable to set audio path"));
return;
}
if (!noAnalog) {
/* Set the mode for soc downloader */
property_set("hw.fm.mode", "config_dac");
/* Use analog mode FM */
property_set("hw.fm.isAnalog", "true");
/* start fm_dl service */
property_set("ctl.start", "fm_dl");
for (int i = 0; i < 4; ++i) {
sleep(1);
char value[PROPERTY_VALUE_MAX];
property_get("hw.fm.init", value, "0");
if (!strcmp(value, "1")) {
break;
}
}
}
fd.forget();
sRadioEnabled = true;
}
/* This runs on the main thread but most of the
* initialization is pushed to the radio thread. */
void
EnableFMRadio(const hal::FMRadioSettings& aInfo)
{
if (sRadioEnabled) {
HAL_LOG("Radio already enabled!");
return;
}
hal::FMRadioOperationInformation info;
info.operation() = hal::FM_RADIO_OPERATION_ENABLE;
info.status() = hal::FM_RADIO_OPERATION_STATUS_FAIL;
mozilla::ScopedClose fd(open("/dev/radio0", O_RDWR));
if (fd < 0) {
HAL_LOG("Unable to open radio device");
hal::NotifyFMRadioStatus(info);
return;
}
struct v4l2_capability cap;
int rc = ioctl(fd, VIDIOC_QUERYCAP, &cap);
if (rc < 0) {
HAL_LOG("Unable to query radio device");
hal::NotifyFMRadioStatus(info);
return;
}
sMsmFMMode = !strcmp((char *)cap.driver, "radio-tavarua") ||
!strcmp((char *)cap.driver, "radio-iris");
HAL_LOG("Radio: %s (%s)\n", cap.driver, cap.card);
if (!(cap.capabilities & V4L2_CAP_RADIO)) {
HAL_LOG("/dev/radio0 isn't a radio");
hal::NotifyFMRadioStatus(info);
return;
}
if (!(cap.capabilities & V4L2_CAP_TUNER)) {
HAL_LOG("/dev/radio0 doesn't support the tuner interface");
hal::NotifyFMRadioStatus(info);
return;
}
sRDSSupported = cap.capabilities & V4L2_CAP_RDS_CAPTURE;
sRadioSettings = aInfo;
if (sMsmFMMode) {
sRadioFD = fd.forget();
sMsmFMVersion = cap.version;
if (pthread_create(&sRadioThread, nullptr, runMsmFMRadio, nullptr)) {
HAL_LOG("Couldn't create radio thread");
hal::NotifyFMRadioStatus(info);
}
return;
}
struct v4l2_tuner tuner = {0};
tuner.type = V4L2_TUNER_RADIO;
tuner.rangelow = (aInfo.lowerLimit() * 10000) / 625;
tuner.rangehigh = (aInfo.upperLimit() * 10000) / 625;
tuner.audmode = V4L2_TUNER_MODE_STEREO;
rc = ioctl(fd, VIDIOC_S_TUNER, &tuner);
if (rc < 0) {
HAL_LOG("Unable to adjust band limits");
}
int emphasis;
switch (aInfo.preEmphasis()) {
case 0:
emphasis = V4L2_DEEMPHASIS_DISABLED;
break;
case 50:
emphasis = V4L2_DEEMPHASIS_50_uS;
break;
case 75:
emphasis = V4L2_DEEMPHASIS_75_uS;
break;
default:
MOZ_CRASH("Invalid preemphasis setting");
break;
}
rc = setControl(V4L2_CID_TUNE_DEEMPHASIS, emphasis);
if (rc < 0) {
HAL_LOG("Unable to configure deemphasis");
}
sRadioFD = fd.forget();
sRadioEnabled = true;
info.status() = hal::FM_RADIO_OPERATION_STATUS_SUCCESS;
hal::NotifyFMRadioStatus(info);
}