This is a driver for multimedia devices based on Techwell/Intersil TW5864 chip. It is basically written from scratch. There was an awful reference driver for 2.6 kernel, which is nearly million lines of code and requires half a dozen special userspace libraries, and still doesn't quite work. So currently submitted driver is a product of reverse-engineering and heuristics. tw68 driver was used as code skeleton. The device advertises many capabilities, but this version of driver only supports H.264 encoding of captured video channels. There is one known issue, which reproduces on two of five setups of which I know: P-frames are distorted, but I-frames are fine. Changing quality and framerate settings does not affect this. Currently such workaround is used: v4l2-ctl -d /dev/video$n -c video_gop_size=1 GOP size is set to 1, so that every output frame is I-frame. We are regularly contacting manufacturer regarding such issues, but unfortunately they can do little to help us. Andrey Utkin (1): Add tw5864 driver MAINTAINERS | 7 + drivers/staging/media/Kconfig | 2 + drivers/staging/media/Makefile | 1 + drivers/staging/media/tw5864/Kconfig | 11 + drivers/staging/media/tw5864/Makefile | 3 + drivers/staging/media/tw5864/tw5864-bs.h | 154 ++ drivers/staging/media/tw5864/tw5864-config.c | 359 +++++ drivers/staging/media/tw5864/tw5864-core.c | 453 ++++++ drivers/staging/media/tw5864/tw5864-h264.c | 183 +++ drivers/staging/media/tw5864/tw5864-reg.h | 2200 ++++++++++++++++++++++++++ drivers/staging/media/tw5864/tw5864-tables.h | 237 +++ drivers/staging/media/tw5864/tw5864-video.c | 1364 ++++++++++++++++ drivers/staging/media/tw5864/tw5864.h | 280 ++++ include/linux/pci_ids.h | 1 + 14 files changed, 5255 insertions(+) create mode 100644 drivers/staging/media/tw5864/Kconfig create mode 100644 drivers/staging/media/tw5864/Makefile create mode 100644 drivers/staging/media/tw5864/tw5864-bs.h create mode 100644 drivers/staging/media/tw5864/tw5864-config.c create mode 100644 drivers/staging/media/tw5864/tw5864-core.c create mode 100644 drivers/staging/media/tw5864/tw5864-h264.c create mode 100644 drivers/staging/media/tw5864/tw5864-reg.h create mode 100644 drivers/staging/media/tw5864/tw5864-tables.h create mode 100644 drivers/staging/media/tw5864/tw5864-video.c create mode 100644 drivers/staging/media/tw5864/tw5864.h -- 2.7.1.380.g0fea050.dirty _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
