platform/x86/amd/pmf: Implement util layer ioctl handler

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Implement the ioctl handler for the util layer character device. This
support adds the actual functionality to populate PMF metrics from the
TA shared memory buffer and return them to userspace.

The implementation includes:
- amd_pmf_populate_data() to extract metrics from TA shared memory
- amd_pmf_set_ioctl() to handle userspace ioctl requests
- Size negotiation for forward/backward compatibility
- Feature-based population of struct fields
- Export amd_pmf_get_ta_custom_bios_inputs()

Co-developed-by: Sanket Goswami <Sanket.Goswami@amd.com>
Signed-off-by: Sanket Goswami <Sanket.Goswami@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://patch.msgid.link/20260609081044.2416731-6-Shyam-sundar.S-k@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

...

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Shyam Sundar S K 2026-06-09 13:40:42 +05:30 • committed by Ilpo Järvinen

parent c7bdedfcb8

commit 5bda82c797

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3 changed files with 89 additions and 2 deletions

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1

drivers/platform/x86/amd/pmf/pmf.h

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3

drivers/platform/x86/amd/pmf/spc.c

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87

drivers/platform/x86/amd/pmf/util.c

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