media: atomisp: ia_css_raw.host: Remove #ifdef ISP2401 to make the driver generic

Remove #ifdef from the code and made the code generic. The raw image
configuration was determined during runtime.

Link: https://lore.kernel.org/r/20230802095606.1298152-2-hpa@redhat.com

Signed-off-by: Kate Hsuan <hpa@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

media: atomisp: return errors from ia_css_dma_configure_from_info()

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>

media: atomisp: add return codes for pipeline config functions

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>

media: atomisp: propagate errors at ia_css_*_configure()

Propagate the lower lever ia_css config errors to the next
level.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: get rid of two unused functions

Those cause build to break with -Werror with clang-12:

drivers/staging/media/atomisp/pci/hive_isp_css_common/host/gdc.c:121:24: error: unused function 'gdc_reg_load' [-Werror,-Wunused-function]
drivers/staging/media/atomisp/pci/isp/kernels/raw/raw_1.0/ia_css_raw.host.c:33:1: error: unused function 'sh_css_elems_bytes_from_info' [-Werror,-Wunused-function]

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: get rid of version-dependent globals

Replace all occurrences along the atomisp tree for the conditional
compilation macros found at system_global.h, replacing them by
tests wheather ISP2401 is defined or not.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: add SPDX headers

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>

media: atomisp: cleanup directory hierarchy

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>