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cpufreq/amd-pstate: Export symbols for changing modes

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In order to effectively test all mode switch combinations export
everything necessarily for amd-pstate-ut to trigger a mode switch.

Reviewed-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
This commit is contained in:
Mario Limonciello 2024-08-31 21:49:11 -05:00
parent 15a2b764ea
commit 8d916815b0
2 changed files with 24 additions and 13 deletions
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23
drivers/cpufreq/amd-pstate.c
View file

@ -58,18 +58,6 @@
#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",
@ -79,6 +67,14 @@ static const char * const amd_pstate_mode_string[] = {
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;
@ -1286,7 +1282,7 @@ static ssize_t amd_pstate_show_status(char *buf)
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;
@ -1303,6 +1299,7 @@ static int amd_pstate_update_status(const char *buf, size_t size)
return 0;
}
EXPORT_SYMBOL_GPL(amd_pstate_update_status);
static ssize_t status_show(struct device *dev,
struct device_attribute *attr, char *buf)

14
drivers/cpufreq/amd-pstate.h
View file

@ -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 */