Commit 83e2908c authored by Sumit Gupta's avatar Sumit Gupta Committed by Rafael J. Wysocki
Browse files

ACPI: CPPC: Rename EPP constants for clarity 



Update EPP (Energy Performance Preference) constants for more clarity:

 - Add CPPC_EPP_PERFORMANCE_PREF (0x00) for performance preference.

 - Rename CPPC_ENERGY_PERF_MAX to CPPC_EPP_ENERGY_EFFICIENCY_PREF (0xFF)
   for energy efficiency.

Signed-off-by: default avatarSumit Gupta <sumitg@nvidia.com>
Reviewed-by: default avatarLifeng Zheng <zhenglifeng1@huawei.com>
[ rjw: Changelog edits ]
Link: https://patch.msgid.link/20260120145623.2959636-4-sumitg@nvidia.com


Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 7cb6f10c

drivers/acpi/cppc_acpi.c

+1 −1
Original line number Diff line number Diff line
@@ -1609,7 +1609,7 @@ EXPORT_SYMBOL_GPL(cppc_set_epp_perf); 
 */

int cppc_set_epp(int cpu, u64 epp_val)

{

	if (epp_val > CPPC_ENERGY_PERF_MAX)

	if (epp_val > CPPC_EPP_ENERGY_EFFICIENCY_PREF)

		return -EINVAL;



	return cppc_set_reg_val(cpu, ENERGY_PERF, epp_val);

include/acpi/cppc_acpi.h

+2 −1
Original line number Diff line number Diff line
@@ -39,7 +39,8 @@ 
/* CPPC_AUTO_ACT_WINDOW_MAX_SIG is 127, so 128 and 129 will decay to 127 when writing */

#define CPPC_AUTO_ACT_WINDOW_SIG_CARRY_THRESH 129



#define CPPC_ENERGY_PERF_MAX	(0xFF)

#define CPPC_EPP_PERFORMANCE_PREF		0x00

#define CPPC_EPP_ENERGY_EFFICIENCY_PREF		0xFF



/* Each register has the folowing format. */

struct cpc_reg {