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// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
/*
* OPAL calls to get/set Power Shift Ratio (PSR)
*
* i.e. when something has to be throttled, what gets throttled?
*
* Copyright 2017 IBM Corp.
*/
#include <psr.h>
static int opal_get_power_shift_ratio(u32 handle, int token __unused,
__be32 *__ratio)
{
if (!__ratio || !opal_addr_valid(__ratio))
return OPAL_PARAMETER;
if (psr_get_class(handle) == PSR_CLASS_OCC) {
u32 ratio;
int rc;
rc = occ_get_psr(handle, &ratio);
*__ratio = cpu_to_be32(ratio);
return rc;
}
return OPAL_UNSUPPORTED;
};
opal_call(OPAL_GET_POWER_SHIFT_RATIO, opal_get_power_shift_ratio, 3);
static int opal_set_power_shift_ratio(u32 handle, int token,
u32 ratio)
{
if (psr_get_class(handle) == PSR_CLASS_OCC)
return occ_set_psr(handle, token, ratio);
return OPAL_UNSUPPORTED;
};
opal_call(OPAL_SET_POWER_SHIFT_RATIO, opal_set_power_shift_ratio, 3);
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