Add sysfs interfaces for CPPC autonomous selection in the cppc_cpufreq driver. The patch series is organized in two parts: - patch 1-2 refactor out the general CPPC register get and set functions in cppc_acpi.c - patches 3-4 expose sysfs files for users to control CPPC autonomous selection when supported Since Pierre and me have discussed about whether or not to show auto_act_window and energy_perf when auto_select is disabled. It seems like whether to show these two files has their own points. We'd like to ask for some advice. Relevant discussion: [1] https://lore.kernel.org/all/522721da-1a5c-439c-96a8-d0300dd0f906@xxxxxxxxxx/ Change since v2: - change cppc_get_reg() and cppc_set_reg() name to cppc_get_reg_val() and cppc_set_reg_val() - extract cppc_get_reg_val_in_pcc() and cppc_set_reg_val_in_pcc() - return the result of cpc_read() in cppc_get_reg_val() - add pr_debug() in cppc_get_reg_val_in_pcc() when pcc_ss_id < 0 - rename 'cpunum' to 'cpu' in cppc_get_reg_val() - move some macros from drivers/cpufreq/cppc_cpufreq.c to include/acpi/cppc_acpi.h with a CPPC_XXX prefix Change since v1: - fix some incorrect placeholder - change kstrtoul to kstrtobool in store_auto_select Lifeng Zheng (4): ACPI: CPPC: Add cppc_get_reg_val and cppc_set_reg_val function ACPI: CPPC: Refactor register value get and set ABIs ACPI: CPPC: Add autonomous selection ABIs cpufreq: CPPC: Support for autonomous selection in cppc_cpufreq .../ABI/testing/sysfs-devices-system-cpu | 54 ++++ drivers/acpi/cppc_acpi.c | 266 +++++++++--------- drivers/cpufreq/cppc_cpufreq.c | 129 +++++++++ include/acpi/cppc_acpi.h | 29 ++ 4 files changed, 347 insertions(+), 131 deletions(-) -- 2.33.0
