/*
* Copyright 2015 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include "pp_debug.h"
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/gfp.h>
#include <linux/slab.h>
#include "amd_shared.h"
#include "amd_powerplay.h"
#include "pp_instance.h"
#include "power_state.h"
static inline int pp_check(struct pp_instance *handle)
{
if (handle == NULL || handle->pp_valid != PP_VALID)
return -EINVAL;
if (handle->smu_mgr == NULL || handle->smu_mgr->smumgr_funcs == NULL)
return -EINVAL;
if (handle->pm_en == 0)
return PP_DPM_DISABLED;
if (handle->hwmgr == NULL || handle->hwmgr->hwmgr_func == NULL)
return PP_DPM_DISABLED;
return 0;
}
static int pp_early_init(void *handle)
{
int ret;
struct pp_instance *pp_handle = (struct pp_instance *)handle;
ret = smum_early_init(pp_handle);
if (ret)
return ret;
if ((pp_handle->pm_en == 0)
|| cgs_is_virtualization_enabled(pp_handle->device))
return PP_DPM_DISABLED;
ret = hwmgr_early_init(pp_handle);
if (ret) {
pp_handle->pm_en = 0;
return PP_DPM_DISABLED;
}
return 0;
}
static int pp_sw_init(void *handle)
{
struct pp_smumgr *smumgr;
int ret = 0;
struct pp_instance 