Usage:

General/Common options:
  --all              display all device information available
  -D, --info         show driver info [VIDIOC_QUERYCAP]
  -d, --device <dev> use device <dev>
                     If <dev> starts with a digit, then /dev/radio<dev> is used
                     default: checks for RDS-capable devices,
                     uses device with lowest ID
  -h, --help         display this help message
  --list-devices     list all v4l radio devices with RDS capabilities

Tuner/Modulator options:
  -F, --get-freq     query the frequency [VIDIOC_G_FREQUENCY]
  -f, --set-freq <freq>
                     set the frequency to <freq> MHz [VIDIOC_S_FREQUENCY]
  -T, --get-tuner    query the tuner settings [VIDIOC_G_TUNER]
  --tuner-index <idx> Use idx as tuner idx for tuner/modulator commands
  --freq-seek dir=<0/1>,wrap=<0/1>,spacing=<hz>
                     perform a hardware frequency seek [VIDIOC_S_HW_FREQ_SEEK]
                     dir is 0 (seek downward) or 1 (seek upward)
                     wrap is 0 (do not wrap around) or 1 (wrap around)
                     spacing sets the seek resolution (use 0 for default)
  --list-freq-bands  display all frequency bands for the tuner/modulator
                     [VIDIOC_ENUM_FREQ_BANDS]

RDS options:
  -b, --rbds         parse the RDS data according to the RBDS standard
  -R, --read-rds     enable reading of RDS data from device
  --file <path>      open a RDS stream file dump instead of a device
                     all General and Tuner Options are disabled in this mode
  --wait-limit <ms>  defines the maximum wait duration for avaibility of new
                     RDS data
                     <default>: 5000 ms
  --print-block      prints all valid RDS fields, whenever a value is updated
                     instead of printing only updated values
  --tmc              print information about TMC (Traffic Message Channel) messages
  --silent           only set the result code, do not print any messages
  --verbose          turn on verbose mode - every received RDS group
                     will be printed