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/* SPDX-License-Identifier: GPL-2.0-only */
#include <stdint.h>
#include <amdblocks/acpimmio.h>
#include <amdblocks/aoac.h>
/* This initiates the power on sequence, but doesn't wait for the device to be powered on. */
void power_on_aoac_device(unsigned int dev)
{
uint8_t byte = aoac_read8(AOAC_DEV_D3_CTL(dev));
byte |= FCH_AOAC_PWR_ON_DEV;
byte &= ~FCH_AOAC_TARGET_DEVICE_STATE;
byte |= FCH_AOAC_D0_INITIALIZED;
aoac_write8(AOAC_DEV_D3_CTL(dev), byte);
}
void power_off_aoac_device(unsigned int dev)
{
uint8_t byte = aoac_read8(AOAC_DEV_D3_CTL(dev));
byte &= ~FCH_AOAC_PWR_ON_DEV;
aoac_write8(AOAC_DEV_D3_CTL(dev), byte);
}
bool is_aoac_device_enabled(unsigned int dev)
{
uint8_t byte = aoac_read8(AOAC_DEV_D3_STATE(dev));
byte &= (FCH_AOAC_PWR_RST_STATE | FCH_AOAC_REF_CLK_OK_STATE);
if (byte == (FCH_AOAC_PWR_RST_STATE | FCH_AOAC_REF_CLK_OK_STATE))
return true;
else
return false;
}
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