That patch set adds V4L2 API support for SDR transmitters, with real life working example driver - HackRF. It also contains small change for old SDR API as I decided to rename tuner type from V4L2_TUNER_ADC to V4L2_TUNER_SDR. ADC is SDR receiver and DAC is SDR transmitter, so I eventually though it is better to rename ADC to common term than add new type for DAC. Old type works of course, it is defined also in order to avoid API breakage. Most of the V4L implementation stuff is pretty trivial, ~copy & paste from the SDR receiver. New capability flag V4L2_CAP_SDR_OUTPUT is added to indicate device is SDR transmitter. Old capability flag V4L2_CAP_MODULATOR is used to indicate there is 'tuner' to set radio frequency for transmitter. That capability flag name is pretty misleading in a case of SDR as SDR does not have hardware modulator at all - but as it is existing flag it is hard to change anymore (V4L API uses term TUNER for radio receiver and MODULATOR for radio transmitter). New v4l2 buffer type V4L2_BUF_TYPE_SDR_OUTPUT. Transmitter format is negotiated similarly than receiver. regards Antti Antti Palosaari (9): v4l2: rename V4L2_TUNER_ADC to V4L2_TUNER_SDR v4l2: add RF gain control DocBook: document tuner RF gain control v4l2: add support for SDR transmitter DocBook: document SDR transmitter hackrf: add control for RF amplifier hackrf: switch to single function which configures everything hackrf: add support for transmitter hackrf: do not set human readable name for formats Documentation/DocBook/media/v4l/compat.xml | 20 + Documentation/DocBook/media/v4l/controls.xml | 19 + Documentation/DocBook/media/v4l/dev-sdr.xml | 32 +- Documentation/DocBook/media/v4l/io.xml | 10 +- Documentation/DocBook/media/v4l/pixfmt.xml | 2 +- Documentation/DocBook/media/v4l/v4l2.xml | 9 + Documentation/DocBook/media/v4l/vidioc-g-fmt.xml | 2 +- .../DocBook/media/v4l/vidioc-querycap.xml | 6 + drivers/media/usb/hackrf/hackrf.c | 1019 ++++++++++++++------ drivers/media/v4l2-core/v4l2-ctrls.c | 4 + drivers/media/v4l2-core/v4l2-dev.c | 14 +- drivers/media/v4l2-core/v4l2-ioctl.c | 31 +- drivers/media/v4l2-core/videobuf-core.c | 4 +- include/media/v4l2-ioctl.h | 8 + include/trace/events/v4l2.h | 1 + include/uapi/linux/v4l2-controls.h | 2 + include/uapi/linux/videodev2.h | 10 +- 17 files changed, 898 insertions(+), 295 deletions(-) -- http://palosaari.fi/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
