/*
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* Copyright 2012 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "radeon.h"
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#include "trinityd.h"
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#include "trinity_dpm.h"
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#include "ppsmc.h"
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static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id)
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{
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int i;
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u32 v = 0;
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WREG32(SMC_MESSAGE_0, id);
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for (i = 0; i < rdev->usec_timeout; i++) {
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if (RREG32(SMC_RESP_0) != 0)
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break;
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udelay(1);
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}
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v = RREG32(SMC_RESP_0);
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if (v != 1) {
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if (v == 0xFF) {
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DRM_ERROR("SMC failed to handle the message!\n");
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return -EINVAL;
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} else if (v == 0xFE) {
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DRM_ERROR("Unknown SMC message!\n");
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return -EINVAL;
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}
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}
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return 0;
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}
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int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable)
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{
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if (enable)
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return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM);
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else
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return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM);
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}
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int trinity_dpm_config(struct radeon_device *rdev, bool enable)
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{
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if (enable)
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WREG32_SMC(SMU_SCRATCH0, 1);
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else
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WREG32_SMC(SMU_SCRATCH0, 0);
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return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config);
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}
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int trinity_dpm_force_state(struct radeon_device *rdev, u32 n)
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{
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WREG32_SMC(SMU_SCRATCH0, n);
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return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState);
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}
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int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n)
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{
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WREG32_SMC(SMU_SCRATCH0, n);
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return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled);
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}
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int trinity_uvd_dpm_config(struct radeon_device *rdev)
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{
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return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config);
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}
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int trinity_dpm_no_forced_level(struct radeon_device *rdev)
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{
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return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel);
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}
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int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev,
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bool enable)
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{
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if (enable)
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return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment);
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else
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return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment);
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}
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int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev)
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{
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return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config);
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}
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void trinity_acquire_mutex(struct radeon_device *rdev)
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{
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int i;
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WREG32(SMC_INT_REQ, 1);
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for (i = 0; i < rdev->usec_timeout; i++) {
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if ((RREG32(SMC_INT_REQ) & 0xffff) == 1)
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break;
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udelay(1);
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}
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}
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void trinity_release_mutex(struct radeon_device *rdev)
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{
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WREG32(SMC_INT_REQ, 0);
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}
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