platform/x86: ISST: Use PP level enable mask

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Add check for enabled levels only when reading MMIO. Some levels can be
disabled by BIOS. If the level is not enabled, return an error.

Reset the enable and allowed level masks if there is a failure to add a
perf level.

Fixes: ea009e4769 ("platform/x86: ISST: Add SST-PP support via TPMI")
Cc: stable@vger.kernel.org
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20260811221514.3905817-6-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

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Srinivas Pandruvada 2026-08-11 15:15:13 -07:00 • committed by Ilpo Järvinen

parent 574b59bb4b

commit 9b9026943b

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GPG key ID: 59AC4F6153E5CE31

1 changed files with 14 additions and 2 deletions

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drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c

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