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in previous commits, this is only a matter of adding the vip.c and tegra20.c implementations and registering them. Unfortunately there was no documentation available for the VI or VIP peripherals of Tegra20 (or any other Tegra chips). This implementation has been based entirely on the code from a vendor kernel based on Linux 3.1 and massively adapted to fit into the tegra-video driver. Parts of this code is definitely non-optimal to say the least (especially tegra20_vi_enable() and the single-frame capture logic), but it was impossible to improve it. Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> [hverkuil: fix host1x_client_unregister usage: it's now a void func] 2023-05-25staging: media: tegra-video: add H/V flip controlsLuca Ceresoli Tegra20 can do horizontal and vertical image flip, but Tegra210 cannot (either the hardware, or this driver). In preparation to adding Tegra20 support, add a flag in struct tegra_vi_soc so the generic vi.c code knows whether the flip controls should be added or not. Also provide a generic implementation that simply sets two flags in the channel struct. The Tegra20 implementation will enable flipping at stream start based on those flags. Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> 2023-05-25staging: media: tegra-video: add hooks for planar YUV and H/V flipLuca Ceresoli Tegra20 supports planar YUV422 capture, which can be implemented by writing U and V base address registers in addition to the "main" base buffer address register. It also supports H and V flip, which among others requires to write the start address (i.e. the 1st offset to write, at the end of the buffer or line) in more registers for Y and, for planar formats, U and V. Add minimal hooks in VI to allow per-SoC optional support to those features: - variables in struct tegra_vi for the U and V buffer base offsets - variables in struct tegra_vi for the Y, U and V buffer start offsets - an optional per-soc VI operation to compute those values on queue setup Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> 2023-05-25staging: media: tegra-video: add syncpts for Tegra20 to struct tegra_viLuca Ceresoli In preparation to implement Tegra20 parallel video capture, add a variable to hold the required syncpt and document all the syncpt variables. Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> 2023-05-25staging: media: tegra-video: move syncpt init/free to a per-soc opLuca Ceresoli tegra_channel_host1x_syncpt_init() gets the host1x syncpts needed for the Tegra210 implementation, and tegra_channel_host1x_syncpts_free() puts them. Tegra20 needs to get and put a different syncpt. In preparation for adding Tegra20 support, move these functions to new ops in the soc-specific `struct tegra_vi_ops` . No functional changes. Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> 2023-05-25staging: media: tegra-video: add a per-soc enable/disable opLuca Ceresoli The Tegra20 VI needs an additional operation to enable the VI, add an operation for that. Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> 2023-05-25staging: media: tegra-video: move default format to soc-specific dataLuca Ceresoli The tegra_default_format in vi.c is specific to Tegra210 CSI. In preparation for adding Tegra20 VIP support, move the default format to a new field in the soc-specific `struct tegra_vi_soc`. Instead of an entire format struct, only store a pointer to an item in the existing format array. No functional changes. The format pointed to is the same that used to be in vi.c. Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> 2023-05-25staging: media: tegra-video: move tegra_channel_fmt_align to a per-soc opLuca Ceresoli tegra_channel_fmt_align() takes care of the size constraints, alignment and rounding requirements of the Tegra210 VI peripheral. Tegra20 has different constraints. In preparation for adding Tegra20 support, move this function to a new op in the soc-specific `struct tegra_vi_ops` . Also move to tegra210.c the T210-specific defines used in the moved code. No functional changes. Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> 2023-05-25staging: media: tegra-video: move private struct declaration to C fileLuca Ceresoli struct tegra_vi_graph_entity is an internal implementation detail of the VI module. Move its declaration from vi.h to vi.c. Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> 2023-05-25staging: media: tegra-video: improve documentation of tegra_video_format fieldsLuca Ceresoli Some fields are irrelevant for Tegra20/VIP. Add a note to clarify that. Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> wells 2021-11-10netfs, 9p, afs, ceph: Use foliosDavid Howells 2021-11-049p: fix a bunch of checkpatch warningsDominique Martinet 2021-11-039p: fix file headersDominique Martinet 2021-11-039p: Convert to using the netfs helper lib to do reads and cachingDavid Howells 2021-10-049p: Fix a bunch of kerneldoc warnings shown up by W=1David Howells