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Several places rely on the [frame_]info member being the first member of
struct ia_css_frame, so that &frame->info will yield NULL when frame is
NULL (some places already explicitly check for a NULL frame pointer but
not nearly all).
For videobuf2 support the vb2_v4l2_buffer struct needs to be embedded
in the frame struct and it needs to be the first member. Breaking the
assumption that &frame->info will yield NULL when frame is NULL.
Add a ia_css_frame_get_info() helper to return either the ia_css_frame_info
struct embedded in the frame, or NULL when the frame pointer is NULL and
use this in places where a ia_css_frame_info ptr or NULL is expected.
To make sure that we catch all uses of the info field this patch also
renames the info field to frame_info.
This is a preparation patch for converting the driver to videobuf2.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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Now that the pipeline config functions can return errors, change
ia_css_dma_configure_from_info() and callers in order for them
to return errors at pipelines instead of using assert().
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Those functions can internally break, but, as they don't return
errors, internally there are some assert() calls, which is bad,
as it hangs the driver.
So, add return codes there, in preparation for removing such
assert() calls.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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This driver is licensed under GPL 2.0, as stated inside their
headers.
Add the proper tag there. We should probably latter cleanup
the reduntant licensing text, but this could be done later,
after we get rid of other abstraction layers.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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This driver has very long directories without a good
reason (IMHO). Let's drop two directories from such hierarchy,
in order to simplify things a little bit and make the dir
output a bit more readable.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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