From 44f21855901b1fd618ac16b07dbd14e8fea4ee13 Mon Sep 17 00:00:00 2001 From: Mario Limonciello Date: Sat, 31 Aug 2024 21:49:11 -0500 Subject: cpufreq/amd-pstate: Export symbols for changing modes In order to effectively test all mode switch combinations export everything necessarily for amd-pstate-ut to trigger a mode switch. Signed-off-by: Mario Limonciello --- drivers/cpufreq/amd-pstate.c | 23 ++++++++++------------- drivers/cpufreq/amd-pstate.h | 14 ++++++++++++++ 2 files changed, 24 insertions(+), 13 deletions(-) --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -60,18 +60,6 @@ #define AMD_CPPC_EPP_BALANCE_POWERSAVE 0xBF #define AMD_CPPC_EPP_POWERSAVE 0xFF -/* - * enum amd_pstate_mode - driver working mode of amd pstate - */ -enum amd_pstate_mode { - AMD_PSTATE_UNDEFINED = 0, - AMD_PSTATE_DISABLE, - AMD_PSTATE_PASSIVE, - AMD_PSTATE_ACTIVE, - AMD_PSTATE_GUIDED, - AMD_PSTATE_MAX, -}; - static const char * const amd_pstate_mode_string[] = { [AMD_PSTATE_UNDEFINED] = "undefined", [AMD_PSTATE_DISABLE] = "disable", @@ -81,6 +69,14 @@ static const char * const amd_pstate_mod NULL, }; +const char *amd_pstate_get_mode_string(enum amd_pstate_mode mode) +{ + if (mode < 0 || mode >= AMD_PSTATE_MAX) + return NULL; + return amd_pstate_mode_string[mode]; +} +EXPORT_SYMBOL_GPL(amd_pstate_get_mode_string); + struct quirk_entry { u32 nominal_freq; u32 lowest_freq; @@ -1392,7 +1388,7 @@ static ssize_t amd_pstate_show_status(ch return sysfs_emit(buf, "%s\n", amd_pstate_mode_string[cppc_state]); } -static int amd_pstate_update_status(const char *buf, size_t size) +int amd_pstate_update_status(const char *buf, size_t size) { int mode_idx; @@ -1409,6 +1405,7 @@ static int amd_pstate_update_status(cons return 0; } +EXPORT_SYMBOL_GPL(amd_pstate_update_status); static ssize_t status_show(struct device *dev, struct device_attribute *attr, char *buf) --- a/drivers/cpufreq/amd-pstate.h +++ b/drivers/cpufreq/amd-pstate.h @@ -103,4 +103,18 @@ struct amd_cpudata { bool boost_state; }; +/* + * enum amd_pstate_mode - driver working mode of amd pstate + */ +enum amd_pstate_mode { + AMD_PSTATE_UNDEFINED = 0, + AMD_PSTATE_DISABLE, + AMD_PSTATE_PASSIVE, + AMD_PSTATE_ACTIVE, + AMD_PSTATE_GUIDED, + AMD_PSTATE_MAX, +}; +const char *amd_pstate_get_mode_string(enum amd_pstate_mode mode); +int amd_pstate_update_status(const char *buf, size_t size); + #endif /* _LINUX_AMD_PSTATE_H */