This is a version 3 of the V4L2 API bits to support Software Digital Radio (SDR). Changes from version 2: - Patches got better described and named; - Merged all SDR analog TV into just one field; - Documented what parts of the [RFC v2013-04-11] SDR API REQUIREMENT SPECIFICATION are being addressed on the patches that touch on the V4L2 external API. With regards to the [RFC v2013-04-11] SDR requirements spec[1], v3 implements: - operation mode inquire (Rx/Tx) - implemented via VIDIOC_QUERYCAP; - get/set doesn't make sense, as different devnodes are used for RX and TX; - sampling resolution - implemented via VIDIOC_ENUM_FMT/VIDIOC_G_FMT/VIDIOC_S_FMT. - sampling rate - get/set - implemented via VIDIOC_G_TUNER/VIDIOC_S_TUNER. - inquire HW - TODO (planning is to also use the same ioctl's for it); - It may make sense to move it out of TUNER ioctl, as this is actually ADC/DAC settings. For the initial tests, I'll likely use as is, but IMO, the beter is to split it out of VIDIOC_G_TUNER/VIDIOC_S_TUNER. - inversion - TODO. If needed, probably will use VIDIOC_G_TUNER. - RF frequency - implemented using VIDIOC_S_FREQUENCY/VIDIOC_G_FREQUENCY - scale: 62.5 Hz. - TODO: add a lower scale, for very low freqs. - IF frequency - implemented via VIDIOC_G_TUNER/VIDIOC_S_TUNER. - tuner lock (frequency synthesizer / PLL) - TODO. May eventually use tuner->strength - tuner gains - TODO (V4L2 controls). - enable/disable auto gain - TODO (V4L2 controls). - tuner filters - TODO (V4L2 controls). - pass RF standard to tuner? - Partially implemented. It doesn't pass V4L2 analog TV types yet. - TODO: add VIDIOC_S_STD support for SDR radio - antenna switch - implemented via VIDIOC_G_TUNER/VIDIOC_S_TUNER. - external LNA - TODO (maybe there's already a V4L2 control for it) - device locking between multiple APIs - TODO (well, there are resource locking already between DVB and V4L at driver level) [1] http://permalink.gmane.org/gmane.linux.drivers.video-input-infrastructure/63323 TODO: - check if VB2 require changes (might require trivial ones, due to the new buffer type); - add a SDR driver testing the new features - likely a cx88 driver, but as cx88 doesn't use VB2, I might use some other driver. The advantage of using cx88 is that it has 2 ADC, one baseband and another IF that can be used at the same time, 8-bits or 10-bits and up to ~35 MHz of sampling rate. Mauro Carvalho Chehab (10): [media] Add initial SDR support at V4L2 API [media] videodev2.h: Remove the unused old V4L1 buffer types [media] V4L2 api: Add a buffer capture type for SDR [media] V4L2 sdr API: Add fields for VIDIOC_[G|S]_TUNER [media] v4l2-ioctl: Add tuner ioctl support for SDR radio type [media] tuner-core: consider SDR as radio [media] tuner-core: add SDR support for g_tuner [media] tuner-core: store tuner ranges at tuner struct [media] tuner-core: add support to get the tuner frequency range [media] tuner-core: add support for SDR set_tuner Documentation/DocBook/media/v4l/common.xml | 35 +++ Documentation/DocBook/media/v4l/dev-capture.xml | 26 +- Documentation/DocBook/media/v4l/io.xml | 6 + Documentation/DocBook/media/v4l/pixfmt.xml | 41 +++ Documentation/DocBook/media/v4l/v4l2.xml | 1 + Documentation/DocBook/media/v4l/vidioc-g-tuner.xml | 30 ++- .../DocBook/media/v4l/vidioc-querycap.xml | 7 + drivers/media/dvb-core/dvb_frontend.h | 2 + drivers/media/tuners/tuner-xc2028.c | 2 + drivers/media/v4l2-core/tuner-core.c | 297 ++++++++++++++------- drivers/media/v4l2-core/v4l2-dev.c | 3 + drivers/media/v4l2-core/v4l2-ioctl.c | 121 +++++++-- include/media/v4l2-dev.h | 3 +- include/media/v4l2-ioctl.h | 8 + include/uapi/linux/videodev2.h | 79 ++++-- 15 files changed, 503 insertions(+), 158 deletions(-) -- 1.8.1.4 -- 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
