Commit 9a251ada authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Yingbao Jia
Browse files

platform/x86: ISST: Use fuse enabled mask instead of allowed levels 

mainline inclusion
from mainline-v6.7-rc1
commit da4082841ccf022beae73e63d3f476f59777172b
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I8WOEO

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=da4082841ccf022beae73e63d3f476f59777172b



-------------------------------------

Allowed level mask is a mask of levels, which are currently allowed to
dynamically switch by the OS. Fused mask is a mask of all levels even if
OS is not allowed to switch.

Even if OS is not allowed to dynamically switch, it is still possible for
user to boot to a level by using BIOS option. To decide which level to
boot next time, user wants to check parameters (power, performance or
thermal) of that level to decide.

So, when passing the level mask for display to user space, use fuse
enabled mask, which has all levels.

Intel-SIG: commit da4082841ccf platform/x86: ISST: Use fuse enabled mask instead of allowed levels.
Backport Intel speed select ISST driver support on TPMI.

Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20231003163234.1856669-2-srinivas.pandruvada@linux.intel.com


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
[ Yingbao Jia: amend commit log ]
Signed-off-by: default avatarYingbao Jia <yingbao.jia@intel.com>
parent 01384948

drivers/platform/x86/intel_speed_select_if/isst_tpmi_core.c

+1 −1
Original line number Diff line number Diff line
@@ -704,7 +704,7 @@ static int isst_if_get_perf_level(void __user *argp) 
		return -EINVAL;



	perf_level.max_level = power_domain_info->max_level;

	perf_level.level_mask = power_domain_info->pp_header.allowed_level_mask;

	perf_level.level_mask = power_domain_info->pp_header.level_en_mask;

	perf_level.feature_rev = power_domain_info->pp_header.feature_rev;

	_read_pp_info("current_level", perf_level.current_level, SST_PP_STATUS_OFFSET,

		      SST_PP_LEVEL_START, SST_PP_LEVEL_WIDTH, SST_MUL_FACTOR_NONE)