/*
 * Copyright 2017 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.
 *
 * Authors: Rafał Miłecki <zajec5@gmail.com>
 *          Alex Deucher <alexdeucher@gmail.com>
 */

#include <drm/drm_debugfs.h>

#include "amdgpu.h"
#include "amdgpu_drv.h"
#include "amdgpu_pm.h"
#include "amdgpu_dpm.h"
#include "amdgpu_display.h"
#include "amdgpu_smu.h"
#include "atom.h"
#include <linux/power_supply.h>
#include <linux/pci.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/nospec.h>
#include "hwmgr.h"
#define WIDTH_4K 3840

static int amdgpu_debugfs_pm_init(struct amdgpu_device *adev);

static const struct cg_flag_name clocks[] = {
        {AMD_CG_SUPPORT_GFX_MGCG, "Graphics Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_GFX_MGLS, "Graphics Medium Grain memory Light Sleep"},
        {AMD_CG_SUPPORT_GFX_CGCG, "Graphics Coarse Grain Clock Gating"},
        {AMD_CG_SUPPORT_GFX_CGLS, "Graphics Coarse Grain memory Light Sleep"},
        {AMD_CG_SUPPORT_GFX_CGTS, "Graphics Coarse Grain Tree Shader Clock Gating"},
        {AMD_CG_SUPPORT_GFX_CGTS_LS, "Graphics Coarse Grain Tree Shader Light Sleep"},
        {AMD_CG_SUPPORT_GFX_CP_LS, "Graphics Command Processor Light Sleep"},
        {AMD_CG_SUPPORT_GFX_RLC_LS, "Graphics Run List Controller Light Sleep"},
        {AMD_CG_SUPPORT_GFX_3D_CGCG, "Graphics 3D Coarse Grain Clock Gating"},
        {AMD_CG_SUPPORT_GFX_3D_CGLS, "Graphics 3D Coarse Grain memory Light Sleep"},
        {AMD_CG_SUPPORT_MC_LS, "Memory Controller Light Sleep"},
        {AMD_CG_SUPPORT_MC_MGCG, "Memory Controller Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_SDMA_LS, "System Direct Memory Access Light Sleep"},
        {AMD_CG_SUPPORT_SDMA_MGCG, "System Direct Memory Access Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_BIF_MGCG, "Bus Interface Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_BIF_LS, "Bus Interface Light Sleep"},
        {AMD_CG_SUPPORT_UVD_MGCG, "Unified Video Decoder Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_VCE_MGCG, "Video Compression Engine Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_HDP_LS, "Host Data Path Light Sleep"},
        {AMD_CG_SUPPORT_HDP_MGCG, "Host Data Path Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_DRM_MGCG, "Digital Right Management Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_DRM_LS, "Digital Right Management Light Sleep"},
        {AMD_CG_SUPPORT_ROM_MGCG, "Rom Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_DF_MGCG, "Data Fabric Medium Grain Clock Gating"},

        {AMD_CG_SUPPORT_ATHUB_MGCG, "Address Translation Hub Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_ATHUB_LS, "Address Translation Hub Light Sleep"},
        {0, NULL},
};

static const struct hwmon_temp_label {
        enum PP_HWMON_TEMP channel;
        const char *label;
} temp_label[] = {
        {PP_TEMP_EDGE, "edge"},
        {PP_TEMP_JUNCTION, "junction"},
        {PP_TEMP_MEM, "mem"},
};

void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev)
{
        if (adev->pm.dpm_enabled) {
                mutex_lock(&adev->pm.mutex);
                if (power_supply_is_system_supplied() > 0)
                        adev->pm.ac_power = true;
                else
                        adev->pm.ac_power = false;
                if (adev->powerplay.pp_funcs->enable_bapm)
                        amdgpu_dpm_enable_bapm(adev, adev->pm.ac_power);
                mutex_unlock(&adev->pm.mutex);
        }
}

int amdgpu_dpm_read_sensor(struct amdgpu_device *adev, enum amd_pp_sensors sensor,
                           void *data, uint32_t *size)
{
        int ret = 0;

        if (!data || !size)
                return -EINVAL;

        if (is_support_sw_smu(adev))
                ret = smu_read_sensor(&adev->smu, sensor, data, size);
        else {
                if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->read_sensor)
                        ret = adev->powerplay.pp_funcs->read_sensor((adev)->powerplay.pp_handle,
                                                                    sensor, data, size);
                else
                        ret = -EINVAL;
        }

        return ret;
}

/**
 * DOC: power_dpm_state
 *
 * The power_dpm_state file is a legacy interface and is only provided for
 * backwards compatibility. The amdgpu driver provides a sysfs API for adjusting
 * certain power related parameters.  The file power_dpm_state is used for this.
 * It accepts the following arguments:
 *
 * - battery
 *
 * - balanced
 *
 * - performance
 *
 * battery
 *
 * On older GPUs, the vbios provided a special power state for battery
 * operation.  Selecting battery switched to this state.  This is no
 * longer provided on newer GPUs so the option does nothing in that case.
 *
 * balanced
 *
 * On older GPUs, the vbios provided a special power state for balanced
 * operation.  Selecting balanced switched to this state.  This is no
 * longer provided on newer GPUs so the option does nothing in that case.
 *
 * performance
 *
 * On older GPUs, the vbios provided a special power state for performance
 * operation.  Selecting performance switched to this state.  This is no
 * longer provided on newer GPUs so the option does nothing in that case.
 *
 */

static ssize_t amdgpu_get_dpm_state(struct device *dev,
                                    struct device_attribute *attr,
                                    char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        enum amd_pm_state_type pm;

        if (is_support_sw_smu(adev)) {
                if (adev->smu.ppt_funcs->get_current_power_state)
                        pm = amdgpu_smu_get_current_power_state(adev);
                else
                        pm = adev->pm.dpm.user_state;
        } else if (adev->powerplay.pp_funcs->get_current_power_state) {
                pm = amdgpu_dpm_get_current_power_state(adev);
        } else {
                pm = adev->pm.dpm.user_state;
        }

        return snprintf(buf, PAGE_SIZE, "%s\n",
                        (pm == POWER_STATE_TYPE_BATTERY) ? "battery" :
                        (pm == POWER_STATE_TYPE_BALANCED) ? "balanced" : "performance");
}

static ssize_t amdgpu_set_dpm_state(struct device *dev,
                                    struct device_attribute *attr,
                                    const char *buf,
                                    size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        enum amd_pm_state_type  state;

        if (strncmp("battery", buf, strlen("battery")) == 0)
                state = POWER_STATE_TYPE_BATTERY;
        else if (strncmp("balanced", buf, strlen("balanced")) == 0)
                state = POWER_STATE_TYPE_BALANCED;
        else if (strncmp("performance", buf, strlen("performance")) == 0)
                state = POWER_STATE_TYPE_PERFORMANCE;
        else {
                count = -EINVAL;
                goto fail;
        }

        if (is_support_sw_smu(adev)) {
                mutex_lock(&adev->pm.mutex);
                adev->pm.dpm.user_state = state;
                mutex_unlock(&adev->pm.mutex);
        } else if (adev->powerplay.pp_funcs->dispatch_tasks) {
                amdgpu_dpm_dispatch_task(adev, AMD_PP_TASK_ENABLE_USER_STATE, &state);
        } else {
                mutex_lock(&adev->pm.mutex);
                adev->pm.dpm.user_state = state;
                mutex_unlock(&adev->pm.mutex);

                /* Can't set dpm state when the card is off */
                if (!(adev->flags & AMD_IS_PX) ||
                    (ddev->switch_power_state == DRM_SWITCH_POWER_ON))
                        amdgpu_pm_compute_clocks(adev);
        }
fail:
        return count;
}


/**
 * DOC: power_dpm_force_performance_level
 *
 * The amdgpu driver provides a sysfs API for adjusting certain power
 * related parameters.  The file power_dpm_force_performance_level is
 * used for this.  It accepts the following arguments:
 *
 * - auto
 *
 * - low
 *
 * - high
 *
 * - manual
 *
 * - profile_standard
 *
 * - profile_min_sclk
 *
 * - profile_min_mclk
 *
 * - profile_peak
 *
 * auto
 *
 * When auto is selected, the driver will attempt to dynamically select
 * the optimal power profile for current conditions in the driver.
 *
 * low
 *
 * When low is selected, the clocks are forced to the lowest power state.
 *
 * high
 *
 * When high is selected, the clocks are forced to the highest power state.
 *
 * manual
 *
 * When manual is selected, the user can manually adjust which power states
 * are enabled for each clock domain via the sysfs pp_dpm_mclk, pp_dpm_sclk,
 * and pp_dpm_pcie files and adjust the power state transition heuristics
 * via the pp_power_profile_mode sysfs file.
 *
 * profile_standard
 * profile_min_sclk
 * profile_min_mclk
 * profile_peak
 *
 * When the profiling modes are selected, clock and power gating are
 * disabled and the clocks are set for different profiling cases. This
 * mode is recommended for profiling specific work loads where you do
 * not want clock or power gating for clock fluctuation to interfere
 * with your results. profile_standard sets the clocks to a fixed clock
 * level which varies from asic to asic.  profile_min_sclk forces the sclk
 * to the lowest level.  profile_min_mclk forces the mclk to the lowest level.
 * profile_peak sets all clocks (mclk, sclk, pcie) to the highest levels.
 *
 */

static ssize_t amdgpu_get_dpm_forced_performance_level(struct device *dev,
                                                struct device_attribute *attr,
                                                                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        enum amd_dpm_forced_level level = 0xff;

        if (amdgpu_sriov_vf(adev))
                return 0;

        if ((adev->flags & AMD_IS_PX) &&
            (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return snprintf(buf, PAGE_SIZE, "off\n");

        if (is_support_sw_smu(adev))
                level = smu_get_performance_level(&adev->smu);
        else if (adev->powerplay.pp_funcs->get_performance_level)
                level = amdgpu_dpm_get_performance_level(adev);
        else
                level = adev->pm.dpm.forced_level;

        return snprintf(buf, PAGE_SIZE, "%s\n",
                        (level == AMD_DPM_FORCED_LEVEL_AUTO) ? "auto" :
                        (level == AMD_DPM_FORCED_LEVEL_LOW) ? "low" :
                        (level == AMD_DPM_FORCED_LEVEL_HIGH) ? "high" :
                        (level == AMD_DPM_FORCED_LEVEL_MANUAL) ? "manual" :
                        (level == AMD_DPM_FORCED_LEVEL_PROFILE_STANDARD) ? "profile_standard" :
                        (level == AMD_DPM_FORCED_LEVEL_PROFILE_MIN_SCLK) ? "profile_min_sclk" :
                        (level == AMD_DPM_FORCED_LEVEL_PROFILE_MIN_MCLK) ? "profile_min_mclk" :
                        (level == AMD_DPM_FORCED_LEVEL_PROFILE_PEAK) ? "profile_peak" :
                        "unknown");
}

static ssize_t amdgpu_set_dpm_forced_performance_level(struct device *dev,
                                                       struct device_attribute *attr,
                                                       const char *buf,
                                                       size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        enum amd_dpm_forced_level level;
        enum amd_dpm_forced_level current_level = 0xff;
        int ret = 0;

        /* Can't force performance level when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        if (!amdgpu_sriov_vf(adev)) {
                if (is_support_sw_smu(adev))
                        current_level = smu_get_performance_level(&adev->smu);
                else if (adev->powerplay.pp_funcs->get_performance_level)
                        current_level = amdgpu_dpm_get_performance_level(adev);
        }

        if (strncmp("low", buf, strlen("low")) == 0) {
                level = AMD_DPM_FORCED_LEVEL_LOW;
        } else if (strncmp("high", buf, strlen("high")) == 0) {
                level = AMD_DPM_FORCED_LEVEL_HIGH;
        } else if (strncmp("auto", buf, strlen("auto")) == 0) {
                level = AMD_DPM_FORCED_LEVEL_AUTO;
        } else if (strncmp("manual", buf, strlen("manual")) == 0) {
                level = AMD_DPM_FORCED_LEVEL_MANUAL;
        } else if (strncmp("profile_exit", buf, strlen("profile_exit")) == 0) {
                level = AMD_DPM_FORCED_LEVEL_PROFILE_EXIT;
        } else if (strncmp("profile_standard", buf, strlen("profile_standard")) == 0) {
                level = AMD_DPM_FORCED_LEVEL_PROFILE_STANDARD;
        } else if (strncmp("profile_min_sclk", buf, strlen("profile_min_sclk")) == 0) {
                level = AMD_DPM_FORCED_LEVEL_PROFILE_MIN_SCLK;
        } else if (strncmp("profile_min_mclk", buf, strlen("profile_min_mclk")) == 0) {
                level = AMD_DPM_FORCED_LEVEL_PROFILE_MIN_MCLK;
        } else if (strncmp("profile_peak", buf, strlen("profile_peak")) == 0) {
                level = AMD_DPM_FORCED_LEVEL_PROFILE_PEAK;
        }  else {
                count = -EINVAL;
                goto fail;
        }

        if (amdgpu_sriov_vf(adev)) {
                if (amdgim_is_hwperf(adev) &&
                    adev->virt.ops->force_dpm_level) {
                        mutex_lock(&adev->pm.mutex);
                        adev->virt.ops->force_dpm_level(adev, level);
                        mutex_unlock(&adev->pm.mutex);
                        return count;
                } else {
                        return -EINVAL;
                }
        }

        if (current_level == level)
                return count;

        /* profile_exit setting is valid only when current mode is in profile mode */
        if (!(current_level & (AMD_DPM_FORCED_LEVEL_PROFILE_STANDARD |
            AMD_DPM_FORCED_LEVEL_PROFILE_MIN_SCLK |
            AMD_DPM_FORCED_LEVEL_PROFILE_MIN_MCLK |
            AMD_DPM_FORCED_LEVEL_PROFILE_PEAK)) &&
            (level == AMD_DPM_FORCED_LEVEL_PROFILE_EXIT)) {
                pr_err("Currently not in any profile mode!\n");
                return -EINVAL;
        }

        if (is_support_sw_smu(adev)) {
                ret = smu_force_performance_level(&adev->smu, level);
                if (ret)
                        count = -EINVAL;
        } else if (adev->powerplay.pp_funcs->force_performance_level) {
                mutex_lock(&adev->pm.mutex);
                if (adev->pm.dpm.thermal_active) {
                        count = -EINVAL;
                        mutex_unlock(&adev->pm.mutex);
                        goto fail;
                }
                ret = amdgpu_dpm_force_performance_level(adev, level);
                if (ret)
                        count = -EINVAL;
                else
                        adev->pm.dpm.forced_level = level;
                mutex_unlock(&adev->pm.mutex);
        }

fail:
        return count;
}

static ssize_t amdgpu_get_pp_num_states(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        struct pp_states_info data;
        int i, buf_len, ret;

        if (is_support_sw_smu(adev)) {
                ret = smu_get_power_num_states(&adev->smu, &data);
                if (ret)
                        return ret;
        } else if (adev->powerplay.pp_funcs->get_pp_num_states)
                amdgpu_dpm_get_pp_num_states(adev, &data);

        buf_len = snprintf(buf, PAGE_SIZE, "states: %d\n", data.nums);
        for (i = 0; i < data.nums; i++)
                buf_len += snprintf(buf + buf_len, PAGE_SIZE, "%d %s\n", i,
                                (data.states[i] == POWER_STATE_TYPE_INTERNAL_BOOT) ? "boot" :
                                (data.states[i] == POWER_STATE_TYPE_BATTERY) ? "battery" :
                                (data.states[i] == POWER_STATE_TYPE_BALANCED) ? "balanced" :
                                (data.states[i] == POWER_STATE_TYPE_PERFORMANCE) ? "performance" : "default");

        return buf_len;
}

static ssize_t amdgpu_get_pp_cur_state(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        struct pp_states_info data;
        struct smu_context *smu = &adev->smu;
        enum amd_pm_state_type pm = 0;
        int i = 0, ret = 0;

        if (is_support_sw_smu(adev)) {
                pm = smu_get_current_power_state(smu);
                ret = smu_get_power_num_states(smu, &data);
                if (ret)
                        return ret;
        } else if (adev->powerplay.pp_funcs->get_current_power_state
                 && adev->powerplay.pp_funcs->get_pp_num_states) {
                pm = amdgpu_dpm_get_current_power_state(adev);
                amdgpu_dpm_get_pp_num_states(adev, &data);
        }

        for (i = 0; i < data.nums; i++) {
                if (pm == data.states[i])
                        break;
        }

        if (i == data.nums)
                i = -EINVAL;

        return snprintf(buf, PAGE_SIZE, "%d\n", i);
}

static ssize_t amdgpu_get_pp_force_state(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;

        if (adev->pp_force_state_enabled)
                return amdgpu_get_pp_cur_state(dev, attr, buf);
        else
                return snprintf(buf, PAGE_SIZE, "\n");
}

static ssize_t amdgpu_set_pp_force_state(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        enum amd_pm_state_type state = 0;
        unsigned long idx;
        int ret;

        if (strlen(buf) == 1)
                adev->pp_force_state_enabled = false;
        else if (is_support_sw_smu(adev))
                adev->pp_force_state_enabled = false;
        else if (adev->powerplay.pp_funcs->dispatch_tasks &&
                        adev->powerplay.pp_funcs->get_pp_num_states) {
                struct pp_states_info data;

                ret = kstrtoul(buf, 0, &idx);
                if (ret || idx >= ARRAY_SIZE(data.states)) {
                        count = -EINVAL;
                        goto fail;
                }
                idx = array_index_nospec(idx, ARRAY_SIZE(data.states));

                amdgpu_dpm_get_pp_num_states(adev, &data);
                state = data.states[idx];
                /* only set user selected power states */
                if (state != POWER_STATE_TYPE_INTERNAL_BOOT &&
                    state != POWER_STATE_TYPE_DEFAULT) {
                        amdgpu_dpm_dispatch_task(adev,
                                        AMD_PP_TASK_ENABLE_USER_STATE, &state);
                        adev->pp_force_state_enabled = true;
                }
        }
fail:
        return count;
}

/**
 * DOC: pp_table
 *
 * The amdgpu driver provides a sysfs API for uploading new powerplay
 * tables.  The file pp_table is used for this.  Reading the file
 * will dump the current power play table.  Writing to the file
 * will attempt to upload a new powerplay table and re-initialize
 * powerplay using that new table.
 *
 */

static ssize_t amdgpu_get_pp_table(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        char *table = NULL;
        int size;

        if (is_support_sw_smu(adev)) {
                size = smu_sys_get_pp_table(&adev->smu, (void **)&table);
                if (size < 0)
                        return size;
        }
        else if (adev->powerplay.pp_funcs->get_pp_table)
                size = amdgpu_dpm_get_pp_table(adev, &table);
        else
                return 0;

        if (size >= PAGE_SIZE)
                size = PAGE_SIZE - 1;

        memcpy(buf, table, size);

        return size;
}

static ssize_t amdgpu_set_pp_table(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int ret = 0;

        if (is_support_sw_smu(adev)) {
                ret = smu_sys_set_pp_table(&adev->smu, (void *)buf, count);
                if (ret)
                        return ret;
        } else if (adev->powerplay.pp_funcs->set_pp_table)
                amdgpu_dpm_set_pp_table(adev, buf, count);

        return count;
}

/**
 * DOC: pp_od_clk_voltage
 *
 * The amdgpu driver provides a sysfs API for adjusting the clocks and voltages
 * in each power level within a power state.  The pp_od_clk_voltage is used for
 * this.
 *
 * < For Vega10 and previous ASICs >
 *
 * Reading the file will display:
 *
 * - a list of engine clock levels and voltages labeled OD_SCLK
 *
 * - a list of memory clock levels and voltages labeled OD_MCLK
 *
 * - a list of valid ranges for sclk, mclk, and voltage labeled OD_RANGE
 *
 * To manually adjust these settings, first select manual using
 * power_dpm_force_performance_level. Enter a new value for each
 * level by writing a string that contains "s/m level clock voltage" to
 * the file.  E.g., "s 1 500 820" will update sclk level 1 to be 500 MHz
 * at 820 mV; "m 0 350 810" will update mclk level 0 to be 350 MHz at
 * 810 mV.  When you have edited all of the states as needed, write
 * "c" (commit) to the file to commit your changes.  If you want to reset to the
 * default power levels, write "r" (reset) to the file to reset them.
 *
 *
 * < For Vega20 >
 *
 * Reading the file will display:
 *
 * - minimum and maximum engine clock labeled OD_SCLK
 *
 * - maximum memory clock labeled OD_MCLK
 *
 * - three <frequency, voltage> points labeled OD_VDDC_CURVE.
 *   They can be used to calibrate the sclk voltage curve.
 *
 * - a list of valid ranges for sclk, mclk, and voltage curve points
 *   labeled OD_RANGE
 *
 * To manually adjust these settings:
 *
 * - First select manual using power_dpm_force_performance_level
 *
 * - For clock frequency setting, enter a new value by writing a
 *   string that contains "s/m index clock" to the file. The index
 *   should be 0 if to set minimum clock. And 1 if to set maximum
 *   clock. E.g., "s 0 500" will update minimum sclk to be 500 MHz.
 *   "m 1 800" will update maximum mclk to be 800Mhz.
 *
 *   For sclk voltage curve, enter the new values by writing a
 *   string that contains "vc point clock voltage" to the file. The
 *   points are indexed by 0, 1 and 2. E.g., "vc 0 300 600" will
 *   update point1 with clock set as 300Mhz and voltage as
 *   600mV. "vc 2 1000 1000" will update point3 with clock set
 *   as 1000Mhz and voltage 1000mV.
 *
 * - When you have edited all of the states as needed, write "c" (commit)
 *   to the file to commit your changes
 *
 * - If you want to reset to the default power levels, write "r" (reset)
 *   to the file to reset them
 *
 */

static ssize_t amdgpu_set_pp_od_clk_voltage(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int ret;
        uint32_t parameter_size = 0;
        long parameter[64];
        char buf_cpy[128];
        char *tmp_str;
        char *sub_str;
        const char delimiter[3] = {' ', '\n', '\0'};
        uint32_t type;

        if (count > 127)
                return -EINVAL;

        if (*buf == 's')
                type = PP_OD_EDIT_SCLK_VDDC_TABLE;
        else if (*buf == 'm')
                type = PP_OD_EDIT_MCLK_VDDC_TABLE;
        else if(*buf == 'r')
                type = PP_OD_RESTORE_DEFAULT_TABLE;
        else if (*buf == 'c')
                type = PP_OD_COMMIT_DPM_TABLE;
        else if (!strncmp(buf, "vc", 2))
                type = PP_OD_EDIT_VDDC_CURVE;
        else
                return -EINVAL;

        memcpy(buf_cpy, buf, count+1);

        tmp_str = buf_cpy;

        if (type == PP_OD_EDIT_VDDC_CURVE)
                tmp_str++;
        while (isspace(*++tmp_str));

        while (tmp_str[0]) {
                sub_str = strsep(&tmp_str, delimiter);
                ret = kstrtol(sub_str, 0, &parameter[parameter_size]);
                if (ret)
                        return -EINVAL;
                parameter_size++;

                while (isspace(*tmp_str))
                        tmp_str++;
        }

        if (is_support_sw_smu(adev)) {
                ret = smu_od_edit_dpm_table(&adev->smu, type,
                                            parameter, parameter_size);

                if (ret)
                        return -EINVAL;
        } else {
                if (adev->powerplay.pp_funcs->odn_edit_dpm_table) {
                        ret = amdgpu_dpm_odn_edit_dpm_table(adev, type,
                                                parameter, parameter_size);
                        if (ret)
                                return -EINVAL;
                }

                if (type == PP_OD_COMMIT_DPM_TABLE) {
                        if (adev->powerplay.pp_funcs->dispatch_tasks) {
                                amdgpu_dpm_dispatch_task(adev,
                                                AMD_PP_TASK_READJUST_POWER_STATE,
                                                NULL);
                                return count;
                        } else {
                                return -EINVAL;
                        }
                }
        }

        return count;
}

static ssize_t amdgpu_get_pp_od_clk_voltage(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        uint32_t size = 0;

        if (is_support_sw_smu(adev)) {
                size = smu_print_clk_levels(&adev->smu, SMU_OD_SCLK, buf);
                size += smu_print_clk_levels(&adev->smu, SMU_OD_MCLK, buf+size);
                size += smu_print_clk_levels(&adev->smu, SMU_OD_VDDC_CURVE, buf+size);
                size += smu_print_clk_levels(&adev->smu, SMU_OD_RANGE, buf+size);
                return size;
        } else if (adev->powerplay.pp_funcs->print_clock_levels) {
                size = amdgpu_dpm_print_clock_levels(adev, OD_SCLK, buf);
                size += amdgpu_dpm_print_clock_levels(adev, OD_MCLK, buf+size);
                size += amdgpu_dpm_print_clock_levels(adev, OD_VDDC_CURVE, buf+size);
                size += amdgpu_dpm_print_clock_levels(adev, OD_RANGE, buf+size);
                return size;
        } else {
                return snprintf(buf, PAGE_SIZE, "\n");
        }

}

/**
 * DOC: ppfeatures
 *
 * The amdgpu driver provides a sysfs API for adjusting what powerplay
 * features to be enabled. The file ppfeatures is used for this. And
 * this is only available for Vega10 and later dGPUs.
 *
 * Reading back the file will show you the followings:
 * - Current ppfeature masks
 * - List of the all supported powerplay features with their naming,
 *   bitmasks and enablement status('Y'/'N' means "enabled"/"disabled").
 *
 * To manually enable or disable a specific feature, just set or clear
 * the corresponding bit from original ppfeature masks and input the
 * new ppfeature masks.
 */
static ssize_t amdgpu_set_ppfeature_status(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        uint64_t featuremask;
        int ret;

        ret = kstrtou64(buf, 0, &featuremask);
        if (ret)
                return -EINVAL;

        pr_debug("featuremask = 0x%llx\n", featuremask);

        if (is_support_sw_smu(adev)) {
                ret = smu_set_ppfeature_status(&adev->smu, featuremask);
                if (ret)
                        return -EINVAL;
        } else if (adev->powerplay.pp_funcs->set_ppfeature_status) {
                ret = amdgpu_dpm_set_ppfeature_status(adev, featuremask);
                if (ret)
                        return -EINVAL;
        }

        return count;
}

static ssize_t amdgpu_get_ppfeature_status(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;

        if (is_support_sw_smu(adev)) {
                return smu_get_ppfeature_status(&adev->smu, buf);
        } else if (adev->powerplay.pp_funcs->get_ppfeature_status)
                return amdgpu_dpm_get_ppfeature_status(adev, buf);

        return snprintf(buf, PAGE_SIZE, "\n");
}

/**
 * DOC: pp_dpm_sclk pp_dpm_mclk pp_dpm_socclk pp_dpm_fclk pp_dpm_dcefclk
 * pp_dpm_pcie
 *
 * The amdgpu driver provides a sysfs API for adjusting what power levels
 * are enabled for a given power state.  The files pp_dpm_sclk, pp_dpm_mclk,
 * pp_dpm_socclk, pp_dpm_fclk, pp_dpm_dcefclk and pp_dpm_pcie are used for
 * this.
 *
 * pp_dpm_socclk and pp_dpm_dcefclk interfaces are only available for
 * Vega10 and later ASICs.
 * pp_dpm_fclk interface is only available for Vega20 and later ASICs.
 *
 * Reading back the files will show you the available power levels within
 * the power state and the clock information for those levels.
 *
 * To manually adjust these states, first select manual using
 * power_dpm_force_performance_level.
 * Secondly,Enter a new value for each level by inputing a string that
 * contains " echo xx xx xx > pp_dpm_sclk/mclk/pcie"
 * E.g., echo 4 5 6 to > pp_dpm_sclk will enable sclk levels 4, 5, and 6.
 *
 * NOTE: change to the dcefclk max dpm level is not supported now
 */

static ssize_t amdgpu_get_pp_dpm_sclk(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;

        if (amdgpu_sriov_vf(adev) && amdgim_is_hwperf(adev) &&
            adev->virt.ops->get_pp_clk)
                return adev->virt.ops->get_pp_clk(adev, PP_SCLK, buf);

        if (is_support_sw_smu(adev))
                return smu_print_clk_levels(&adev->smu, SMU_SCLK, buf);
        else if (adev->powerplay.pp_funcs->print_clock_levels)
                return amdgpu_dpm_print_clock_levels(adev, PP_SCLK, buf);
        else
                return snprintf(buf, PAGE_SIZE, "\n");
}

/*
 * Worst case: 32 bits individually specified, in octal at 12 characters
 * per line (+1 for \n).
 */
#define AMDGPU_MASK_BUF_MAX     (32 * 13)

static ssize_t amdgpu_read_mask(const char *buf, size_t count, uint32_t *mask)
{
        int ret;
        long level;
        char *sub_str = NULL;
        char *tmp;
        char buf_cpy[AMDGPU_MASK_BUF_MAX + 1];
        const char delimiter[3] = {' ', '\n', '\0'};
        size_t bytes;

        *mask = 0;

        bytes = min(count, sizeof(buf_cpy) - 1);
        memcpy(buf_cpy, buf, bytes);
        buf_cpy[bytes] = '\0';
        tmp = buf_cpy;
        while (tmp[0]) {
                sub_str = strsep(&tmp, delimiter);
                if (strlen(sub_str)) {
                        ret = kstrtol(sub_str, 0, &level);
                        if (ret)
                                return -EINVAL;
                        *mask |= 1 << level;
                } else
                        break;
        }

        return 0;
}

static ssize_t amdgpu_set_pp_dpm_sclk(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int ret;
        uint32_t mask = 0;

        if (amdgpu_sriov_vf(adev))
                return 0;

        ret = amdgpu_read_mask(buf, count, &mask);
        if (ret)
                return ret;

        if (is_support_sw_smu(adev))
                ret = smu_force_clk_levels(&adev->smu, SMU_SCLK, mask);
        else if (adev->powerplay.pp_funcs->force_clock_level)
                ret = amdgpu_dpm_force_clock_level(adev, PP_SCLK, mask);

        if (ret)
                return -EINVAL;

        return count;
}

static ssize_t amdgpu_get_pp_dpm_mclk(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;

        if (amdgpu_sriov_vf(adev) && amdgim_is_hwperf(adev) &&
            adev->virt.ops->get_pp_clk)
                return adev->virt.ops->get_pp_clk(adev, PP_MCLK, buf);

        if (is_support_sw_smu(adev))
                return smu_print_clk_levels(&adev->smu, SMU_MCLK, buf);
        else if (adev->powerplay.pp_funcs->print_clock_levels)
                return amdgpu_dpm_print_clock_levels(adev, PP_MCLK, buf);
        else
                return snprintf(buf, PAGE_SIZE, "\n");
}

static ssize_t amdgpu_set_pp_dpm_mclk(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int ret;
        uint32_t mask = 0;

        if (amdgpu_sriov_vf(adev))
                return 0;

        ret = amdgpu_read_mask(buf, count, &mask);
        if (ret)
                return ret;

        if (is_support_sw_smu(adev))
                ret = smu_force_clk_levels(&adev->smu, SMU_MCLK, mask);
        else if (adev->powerplay.pp_funcs->force_clock_level)
                ret = amdgpu_dpm_force_clock_level(adev, PP_MCLK, mask);

        if (ret)
                return -EINVAL;

        return count;
}

static ssize_t amdgpu_get_pp_dpm_socclk(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;

        if (is_support_sw_smu(adev))
                return smu_print_clk_levels(&adev->smu, SMU_SOCCLK, buf);
        else if (adev->powerplay.pp_funcs->print_clock_levels)
                return amdgpu_dpm_print_clock_levels(adev, PP_SOCCLK, buf);
        else
                return snprintf(buf, PAGE_SIZE, "\n");
}

static ssize_t amdgpu_set_pp_dpm_socclk(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int ret;
        uint32_t mask = 0;

        ret = amdgpu_read_mask(buf, count, &mask);
        if (ret)
                return ret;

        if (is_support_sw_smu(adev))
                ret = smu_force_clk_levels(&adev->smu, SMU_SOCCLK, mask);
        else if (adev->powerplay.pp_funcs->force_clock_level)
                ret = amdgpu_dpm_force_clock_level(adev, PP_SOCCLK, mask);

        if (ret)
                return -EINVAL;

        return count;

}

static ssize_t amdgpu_get_pp_dpm_fclk(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;

        if (is_support_sw_smu(adev))
                return smu_print_clk_levels(&adev->smu, SMU_FCLK, buf);
        else if (adev->powerplay.pp_funcs->print_clock_levels)
                return amdgpu_dpm_print_clock_levels(adev, PP_FCLK, buf);
        else
                return snprintf(buf, PAGE_SIZE, "\n");
}

static ssize_t amdgpu_set_pp_dpm_fclk(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int ret;
        uint32_t mask = 0;

        ret = amdgpu_read_mask(buf, count, &mask);
        if (ret)
                return ret;

        if (is_support_sw_smu(adev))
                ret = smu_force_clk_levels(&adev->smu, SMU_FCLK, mask);
        else if (adev->powerplay.pp_funcs->force_clock_level)
                ret = amdgpu_dpm_force_clock_level(adev, PP_FCLK, mask);

        if (ret)
                return -EINVAL;

        return count;
}

static ssize_t amdgpu_get_pp_dpm_dcefclk(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;

        if (is_support_sw_smu(adev))
                return smu_print_clk_levels(&adev->smu, SMU_DCEFCLK, buf);
        else if (adev->powerplay.pp_funcs->print_clock_levels)
                return amdgpu_dpm_print_clock_levels(adev, PP_DCEFCLK, buf);
        else
                return snprintf(buf, PAGE_SIZE, "\n");
}

static ssize_t amdgpu_set_pp_dpm_dcefclk(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int ret;
        uint32_t mask = 0;

        ret = amdgpu_read_mask(buf, count, &mask);
        if (ret)
                return ret;

        if (is_support_sw_smu(adev))
                ret = smu_force_clk_levels(&adev->smu, SMU_DCEFCLK, mask);
        else if (adev->powerplay.pp_funcs->force_clock_level)
                ret = amdgpu_dpm_force_clock_level(adev, PP_DCEFCLK, mask);

        if (ret)
                return -EINVAL;

        return count;
}

static ssize_t amdgpu_get_pp_dpm_pcie(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;

        if (is_support_sw_smu(adev))
                return smu_print_clk_levels(&adev->smu, SMU_PCIE, buf);
        else if (adev->powerplay.pp_funcs->print_clock_levels)
                return amdgpu_dpm_print_clock_levels(adev, PP_PCIE, buf);
        else
                return snprintf(buf, PAGE_SIZE, "\n");
}

static ssize_t amdgpu_set_pp_dpm_pcie(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int ret;
        uint32_t mask = 0;

        ret = amdgpu_read_mask(buf, count, &mask);
        if (ret)
                return ret;

        if (is_support_sw_smu(adev))
                ret = smu_force_clk_levels(&adev->smu, SMU_PCIE, mask);
        else if (adev->powerplay.pp_funcs->force_clock_level)
                ret = amdgpu_dpm_force_clock_level(adev, PP_PCIE, mask);

        if (ret)
                return -EINVAL;

        return count;
}

static ssize_t amdgpu_get_pp_sclk_od(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        uint32_t value = 0;

        if (is_support_sw_smu(adev))
                value = smu_get_od_percentage(&(adev->smu), SMU_OD_SCLK);
        else if (adev->powerplay.pp_funcs->get_sclk_od)
                value = amdgpu_dpm_get_sclk_od(adev);

        return snprintf(buf, PAGE_SIZE, "%d\n", value);
}

static ssize_t amdgpu_set_pp_sclk_od(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int ret;
        long int value;

        ret = kstrtol(buf, 0, &value);

        if (ret) {
                count = -EINVAL;
                goto fail;
        }

        if (is_support_sw_smu(adev)) {
                value = smu_set_od_percentage(&(adev->smu), SMU_OD_SCLK, (uint32_t)value);
        } else {
                if (adev->powerplay.pp_funcs->set_sclk_od)
                        amdgpu_dpm_set_sclk_od(adev, (uint32_t)value);

                if (adev->powerplay.pp_funcs->dispatch_tasks) {
                        amdgpu_dpm_dispatch_task(adev, AMD_PP_TASK_READJUST_POWER_STATE, NULL);
                } else {
                        adev->pm.dpm.current_ps = adev->pm.dpm.boot_ps;
                        amdgpu_pm_compute_clocks(adev);
                }
        }

fail:
        return count;
}

static ssize_t amdgpu_get_pp_mclk_od(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        uint32_t value = 0;

        if (is_support_sw_smu(adev))
                value = smu_get_od_percentage(&(adev->smu), SMU_OD_MCLK);
        else if (adev->powerplay.pp_funcs->get_mclk_od)
                value = amdgpu_dpm_get_mclk_od(adev);

        return snprintf(buf, PAGE_SIZE, "%d\n", value);
}

static ssize_t amdgpu_set_pp_mclk_od(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int ret;
        long int value;

        ret = kstrtol(buf, 0, &value);

        if (ret) {
                count = -EINVAL;
                goto fail;
        }

        if (is_support_sw_smu(adev)) {
                value = smu_set_od_percentage(&(adev->smu), SMU_OD_MCLK, (uint32_t)value);
        } else {
                if (adev->powerplay.pp_funcs->set_mclk_od)
                        amdgpu_dpm_set_mclk_od(adev, (uint32_t)value);

                if (adev->powerplay.pp_funcs->dispatch_tasks) {
                        amdgpu_dpm_dispatch_task(adev, AMD_PP_TASK_READJUST_POWER_STATE, NULL);
                } else {
                        adev->pm.dpm.current_ps = adev->pm.dpm.boot_ps;
                        amdgpu_pm_compute_clocks(adev);
                }
        }

fail:
        return count;
}

/**
 * DOC: pp_power_profile_mode
 *
 * The amdgpu driver provides a sysfs API for adjusting the heuristics
 * related to switching between power levels in a power state.  The file
 * pp_power_profile_mode is used for this.
 *
 * Reading this file outputs a list of all of the predefined power profiles
 * and the relevant heuristics settings for that profile.
 *
 * To select a profile or create a custom profile, first select manual using
 * power_dpm_force_performance_level.  Writing the number of a predefined
 * profile to pp_power_profile_mode will enable those heuristics.  To
 * create a custom set of heuristics, write a string of numbers to the file
 * starting with the number of the custom profile along with a setting
 * for each heuristic parameter.  Due to differences across asic families
 * the heuristic parameters vary from family to family.
 *
 */

static ssize_t amdgpu_get_pp_power_profile_mode(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;

        if (is_support_sw_smu(adev))
                return smu_get_power_profile_mode(&adev->smu, buf);
        else if (adev->powerplay.pp_funcs->get_power_profile_mode)
                return amdgpu_dpm_get_power_profile_mode(adev, buf);

        return snprintf(buf, PAGE_SIZE, "\n");
}


static ssize_t amdgpu_set_pp_power_profile_mode(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        int ret = 0xff;
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        uint32_t parameter_size = 0;
        long parameter[64];
        char *sub_str, buf_cpy[128];
        char *tmp_str;
        uint32_t i = 0;
        char tmp[2];
        long int profile_mode = 0;
        const char delimiter[3] = {' ', '\n', '\0'};

        tmp[0] = *(buf);
        tmp[1] = '\0';
        ret = kstrtol(tmp, 0, &profile_mode);
        if (ret)
                goto fail;

        if (profile_mode == PP_SMC_POWER_PROFILE_CUSTOM) {
                if (count < 2 || count > 127)
                        return -EINVAL;
                while (isspace(*++buf))
                        i++;
                memcpy(buf_cpy, buf, count-i);
                tmp_str = buf_cpy;
                while (tmp_str[0]) {
                        sub_str = strsep(&tmp_str, delimiter);
                        ret = kstrtol(sub_str, 0, &parameter[parameter_size]);
                        if (ret) {
                                count = -EINVAL;
                                goto fail;
                        }
                        parameter_size++;
                        while (isspace(*tmp_str))
                                tmp_str++;
                }
        }
        parameter[parameter_size] = profile_mode;
        if (is_support_sw_smu(adev))
                ret = smu_set_power_profile_mode(&adev->smu, parameter, parameter_size);
        else if (adev->powerplay.pp_funcs->set_power_profile_mode)
                ret = amdgpu_dpm_set_power_profile_mode(adev, parameter, parameter_size);
        if (!ret)
                return count;
fail:
        return -EINVAL;
}

/**
 * DOC: busy_percent
 *
 * The amdgpu driver provides a sysfs API for reading how busy the GPU
 * is as a percentage.  The file gpu_busy_percent is used for this.
 * The SMU firmware computes a percentage of load based on the
 * aggregate activity level in the IP cores.
 */
static ssize_t amdgpu_get_busy_percent(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int r, value, size = sizeof(value);

        /* read the IP busy sensor */
        r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_GPU_LOAD,
                                   (void *)&value, &size);

        if (r)
                return r;

        return snprintf(buf, PAGE_SIZE, "%d\n", value);
}

/**
 * DOC: mem_busy_percent
 *
 * The amdgpu driver provides a sysfs API for reading how busy the VRAM
 * is as a percentage.  The file mem_busy_percent is used for this.
 * The SMU firmware computes a percentage of load based on the
 * aggregate activity level in the IP cores.
 */
static ssize_t amdgpu_get_memory_busy_percent(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        int r, value, size = sizeof(value);

        /* read the IP busy sensor */
        r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_MEM_LOAD,
                                   (void *)&value, &size);

        if (r)
                return r;

        return snprintf(buf, PAGE_SIZE, "%d\n", value);
}

/**
 * DOC: pcie_bw
 *
 * The amdgpu driver provides a sysfs API for estimating how much data
 * has been received and sent by the GPU in the last second through PCIe.
 * The file pcie_bw is used for this.
 * The Perf counters count the number of received and sent messages and return
 * those values, as well as the maximum payload size of a PCIe packet (mps).
 * Note that it is not possible to easily and quickly obtain the size of each
 * packet transmitted, so we output the max payload size (mps) to allow for
 * quick estimation of the PCIe bandwidth usage
 */
static ssize_t amdgpu_get_pcie_bw(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;
        uint64_t count0, count1;

        amdgpu_asic_get_pcie_usage(adev, &count0, &count1);
        return snprintf(buf, PAGE_SIZE, "%llu %llu %i\n",
                        count0, count1, pcie_get_mps(adev->pdev));
}

/**
 * DOC: unique_id
 *
 * The amdgpu driver provides a sysfs API for providing a unique ID for the GPU
 * The file unique_id is used for this.
 * This will provide a Unique ID that will persist from machine to machine
 *
 * NOTE: This will only work for GFX9 and newer. This file will be absent
 * on unsupported ASICs (GFX8 and older)
 */
static ssize_t amdgpu_get_unique_id(struct device *dev,
                struct device_attribute *attr,
                char *buf)
{
        struct drm_device *ddev = dev_get_drvdata(dev);
        struct amdgpu_device *adev = ddev->dev_private;

        if (adev->unique_id)
                return snprintf(buf, PAGE_SIZE, "%016llx\n", adev->unique_id);

        return 0;
}

static DEVICE_ATTR(power_dpm_state, S_IRUGO | S_IWUSR, amdgpu_get_dpm_state, amdgpu_set_dpm_state);
static DEVICE_ATTR(power_dpm_force_performance_level, S_IRUGO | S_IWUSR,
                   amdgpu_get_dpm_forced_performance_level,
                   amdgpu_set_dpm_forced_performance_level);
static DEVICE_ATTR(pp_num_states, S_IRUGO, amdgpu_get_pp_num_states, NULL);
static DEVICE_ATTR(pp_cur_state, S_IRUGO, amdgpu_get_pp_cur_state, NULL);
static DEVICE_ATTR(pp_force_state, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_force_state,
                amdgpu_set_pp_force_state);
static DEVICE_ATTR(pp_table, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_table,
                amdgpu_set_pp_table);
static DEVICE_ATTR(pp_dpm_sclk, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_dpm_sclk,
                amdgpu_set_pp_dpm_sclk);
static DEVICE_ATTR(pp_dpm_mclk, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_dpm_mclk,
                amdgpu_set_pp_dpm_mclk);
static DEVICE_ATTR(pp_dpm_socclk, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_dpm_socclk,
                amdgpu_set_pp_dpm_socclk);
static DEVICE_ATTR(pp_dpm_fclk, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_dpm_fclk,
                amdgpu_set_pp_dpm_fclk);
static DEVICE_ATTR(pp_dpm_dcefclk, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_dpm_dcefclk,
                amdgpu_set_pp_dpm_dcefclk);
static DEVICE_ATTR(pp_dpm_pcie, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_dpm_pcie,
                amdgpu_set_pp_dpm_pcie);
static DEVICE_ATTR(pp_sclk_od, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_sclk_od,
                amdgpu_set_pp_sclk_od);
static DEVICE_ATTR(pp_mclk_od, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_mclk_od,
                amdgpu_set_pp_mclk_od);
static DEVICE_ATTR(pp_power_profile_mode, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_power_profile_mode,
                amdgpu_set_pp_power_profile_mode);
static DEVICE_ATTR(pp_od_clk_voltage, S_IRUGO | S_IWUSR,
                amdgpu_get_pp_od_clk_voltage,
                amdgpu_set_pp_od_clk_voltage);
static DEVICE_ATTR(gpu_busy_percent, S_IRUGO,
                amdgpu_get_busy_percent, NULL);
static DEVICE_ATTR(mem_busy_percent, S_IRUGO,
                amdgpu_get_memory_busy_percent, NULL);
static DEVICE_ATTR(pcie_bw, S_IRUGO, amdgpu_get_pcie_bw, NULL);
static DEVICE_ATTR(ppfeatures, S_IRUGO | S_IWUSR,
                amdgpu_get_ppfeature_status,
                amdgpu_set_ppfeature_status);
static DEVICE_ATTR(unique_id, S_IRUGO, amdgpu_get_unique_id, NULL);

static ssize_t amdgpu_hwmon_show_temp(struct device *dev,
                                      struct device_attribute *attr,
                                      char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        struct drm_device *ddev = adev->ddev;
        int channel = to_sensor_dev_attr(attr)->index;
        int r, temp = 0, size = sizeof(temp);

        /* Can't get temperature when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        if (channel >= PP_TEMP_MAX)
                return -EINVAL;

        switch (channel) {
        case PP_TEMP_JUNCTION:
                /* get current junction temperature */
                r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_HOTSPOT_TEMP,
                                           (void *)&temp, &size);
                if (r)
                        return r;
                break;
        case PP_TEMP_EDGE:
                /* get current edge temperature */
                r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_EDGE_TEMP,
                                           (void *)&temp, &size);
                if (r)
                        return r;
                break;
        case PP_TEMP_MEM:
                /* get current memory temperature */
                r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_MEM_TEMP,
                                           (void *)&temp, &size);
                if (r)
                        return r;
                break;
        }

        return snprintf(buf, PAGE_SIZE, "%d\n", temp);
}

static ssize_t amdgpu_hwmon_show_temp_thresh(struct device *dev,
                                             struct device_attribute *attr,
                                             char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int hyst = to_sensor_dev_attr(attr)->index;
        int temp;

        if (hyst)
                temp = adev->pm.dpm.thermal.min_temp;
        else
                temp = adev->pm.dpm.thermal.max_temp;

        return snprintf(buf, PAGE_SIZE, "%d\n", temp);
}

static ssize_t amdgpu_hwmon_show_hotspot_temp_thresh(struct device *dev,
                                             struct device_attribute *attr,
                                             char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int hyst = to_sensor_dev_attr(attr)->index;
        int temp;

        if (hyst)
                temp = adev->pm.dpm.thermal.min_hotspot_temp;
        else
                temp = adev->pm.dpm.thermal.max_hotspot_crit_temp;

        return snprintf(buf, PAGE_SIZE, "%d\n", temp);
}

static ssize_t amdgpu_hwmon_show_mem_temp_thresh(struct device *dev,
                                             struct device_attribute *attr,
                                             char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int hyst = to_sensor_dev_attr(attr)->index;
        int temp;

        if (hyst)
                temp = adev->pm.dpm.thermal.min_mem_temp;
        else
                temp = adev->pm.dpm.thermal.max_mem_crit_temp;

        return snprintf(buf, PAGE_SIZE, "%d\n", temp);
}

static ssize_t amdgpu_hwmon_show_temp_label(struct device *dev,
                                             struct device_attribute *attr,
                                             char *buf)
{
        int channel = to_sensor_dev_attr(attr)->index;

        if (channel >= PP_TEMP_MAX)
                return -EINVAL;

        return snprintf(buf, PAGE_SIZE, "%s\n", temp_label[channel].label);
}

static ssize_t amdgpu_hwmon_show_temp_emergency(struct device *dev,
                                             struct device_attribute *attr,
                                             char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int channel = to_sensor_dev_attr(attr)->index;
        int temp = 0;

        if (channel >= PP_TEMP_MAX)
                return -EINVAL;

        switch (channel) {
        case PP_TEMP_JUNCTION:
                temp = adev->pm.dpm.thermal.max_hotspot_emergency_temp;
                break;
        case PP_TEMP_EDGE:
                temp = adev->pm.dpm.thermal.max_edge_emergency_temp;
                break;
        case PP_TEMP_MEM:
                temp = adev->pm.dpm.thermal.max_mem_emergency_temp;
                break;
        }

        return snprintf(buf, PAGE_SIZE, "%d\n", temp);
}

static ssize_t amdgpu_hwmon_get_pwm1_enable(struct device *dev,
                                            struct device_attribute *attr,
                                            char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        u32 pwm_mode = 0;
        if (is_support_sw_smu(adev)) {
                pwm_mode = smu_get_fan_control_mode(&adev->smu);
        } else {
                if (!adev->powerplay.pp_funcs->get_fan_control_mode)
                        return -EINVAL;

                pwm_mode = amdgpu_dpm_get_fan_control_mode(adev);
        }

        return sprintf(buf, "%i\n", pwm_mode);
}

static ssize_t amdgpu_hwmon_set_pwm1_enable(struct device *dev,
                                            struct device_attribute *attr,
                                            const char *buf,
                                            size_t count)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int err;
        int value;

        /* Can't adjust fan when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        if (is_support_sw_smu(adev)) {
                err = kstrtoint(buf, 10, &value);
                if (err)
                        return err;

                smu_set_fan_control_mode(&adev->smu, value);
        } else {
                if (!adev->powerplay.pp_funcs->set_fan_control_mode)
                        return -EINVAL;

                err = kstrtoint(buf, 10, &value);
                if (err)
                        return err;

                amdgpu_dpm_set_fan_control_mode(adev, value);
        }

        return count;
}

static ssize_t amdgpu_hwmon_get_pwm1_min(struct device *dev,
                                         struct device_attribute *attr,
                                         char *buf)
{
        return sprintf(buf, "%i\n", 0);
}

static ssize_t amdgpu_hwmon_get_pwm1_max(struct device *dev,
                                         struct device_attribute *attr,
                                         char *buf)
{
        return sprintf(buf, "%i\n", 255);
}

static ssize_t amdgpu_hwmon_set_pwm1(struct device *dev,
                                     struct device_attribute *attr,
                                     const char *buf, size_t count)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int err;
        u32 value;
        u32 pwm_mode;

        /* Can't adjust fan when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;
        if (is_support_sw_smu(adev))
                pwm_mode = smu_get_fan_control_mode(&adev->smu);
        else
                pwm_mode = amdgpu_dpm_get_fan_control_mode(adev);
        if (pwm_mode != AMD_FAN_CTRL_MANUAL) {
                pr_info("manual fan speed control should be enabled first\n");
                return -EINVAL;
        }

        err = kstrtou32(buf, 10, &value);
        if (err)
                return err;

        value = (value * 100) / 255;

        if (is_support_sw_smu(adev)) {
                err = smu_set_fan_speed_percent(&adev->smu, value);
                if (err)
                        return err;
        } else if (adev->powerplay.pp_funcs->set_fan_speed_percent) {
                err = amdgpu_dpm_set_fan_speed_percent(adev, value);
                if (err)
                        return err;
        }

        return count;
}

static ssize_t amdgpu_hwmon_get_pwm1(struct device *dev,
                                     struct device_attribute *attr,
                                     char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int err;
        u32 speed = 0;

        /* Can't adjust fan when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        if (is_support_sw_smu(adev)) {
                err = smu_get_fan_speed_percent(&adev->smu, &speed);
                if (err)
                        return err;
        } else if (adev->powerplay.pp_funcs->get_fan_speed_percent) {
                err = amdgpu_dpm_get_fan_speed_percent(adev, &speed);
                if (err)
                        return err;
        }

        speed = (speed * 255) / 100;

        return sprintf(buf, "%i\n", speed);
}

static ssize_t amdgpu_hwmon_get_fan1_input(struct device *dev,
                                           struct device_attribute *attr,
                                           char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int err;
        u32 speed = 0;

        /* Can't adjust fan when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        if (is_support_sw_smu(adev)) {
                err = smu_get_fan_speed_rpm(&adev->smu, &speed);
                if (err)
                        return err;
        } else if (adev->powerplay.pp_funcs->get_fan_speed_rpm) {
                err = amdgpu_dpm_get_fan_speed_rpm(adev, &speed);
                if (err)
                        return err;
        }

        return sprintf(buf, "%i\n", speed);
}

static ssize_t amdgpu_hwmon_get_fan1_min(struct device *dev,
                                         struct device_attribute *attr,
                                         char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        u32 min_rpm = 0;
        u32 size = sizeof(min_rpm);
        int r;

        r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_MIN_FAN_RPM,
                                   (void *)&min_rpm, &size);
        if (r)
                return r;

        return snprintf(buf, PAGE_SIZE, "%d\n", min_rpm);
}

static ssize_t amdgpu_hwmon_get_fan1_max(struct device *dev,
                                         struct device_attribute *attr,
                                         char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        u32 max_rpm = 0;
        u32 size = sizeof(max_rpm);
        int r;

        r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_MAX_FAN_RPM,
                                   (void *)&max_rpm, &size);
        if (r)
                return r;

        return snprintf(buf, PAGE_SIZE, "%d\n", max_rpm);
}

static ssize_t amdgpu_hwmon_get_fan1_target(struct device *dev,
                                           struct device_attribute *attr,
                                           char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int err;
        u32 rpm = 0;

        /* Can't adjust fan when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        if (is_support_sw_smu(adev)) {
                err = smu_get_fan_speed_rpm(&adev->smu, &rpm);
                if (err)
                        return err;
        } else if (adev->powerplay.pp_funcs->get_fan_speed_rpm) {
                err = amdgpu_dpm_get_fan_speed_rpm(adev, &rpm);
                if (err)
                        return err;
        }

        return sprintf(buf, "%i\n", rpm);
}

static ssize_t amdgpu_hwmon_set_fan1_target(struct device *dev,
                                     struct device_attribute *attr,
                                     const char *buf, size_t count)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int err;
        u32 value;
        u32 pwm_mode;

        if (is_support_sw_smu(adev))
                pwm_mode = smu_get_fan_control_mode(&adev->smu);
        else
                pwm_mode = amdgpu_dpm_get_fan_control_mode(adev);

        if (pwm_mode != AMD_FAN_CTRL_MANUAL)
                return -ENODATA;

        /* Can't adjust fan when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        err = kstrtou32(buf, 10, &value);
        if (err)
                return err;

        if (is_support_sw_smu(adev)) {
                err = smu_set_fan_speed_rpm(&adev->smu, value);
                if (err)
                        return err;
        } else if (adev->powerplay.pp_funcs->set_fan_speed_rpm) {
                err = amdgpu_dpm_set_fan_speed_rpm(adev, value);
                if (err)
                        return err;
        }

        return count;
}

static ssize_t amdgpu_hwmon_get_fan1_enable(struct device *dev,
                                            struct device_attribute *attr,
                                            char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        u32 pwm_mode = 0;

        if (is_support_sw_smu(adev)) {
                pwm_mode = smu_get_fan_control_mode(&adev->smu);
        } else {
                if (!adev->powerplay.pp_funcs->get_fan_control_mode)
                        return -EINVAL;

                pwm_mode = amdgpu_dpm_get_fan_control_mode(adev);
        }
        return sprintf(buf, "%i\n", pwm_mode == AMD_FAN_CTRL_AUTO ? 0 : 1);
}

static ssize_t amdgpu_hwmon_set_fan1_enable(struct device *dev,
                                            struct device_attribute *attr,
                                            const char *buf,
                                            size_t count)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int err;
        int value;
        u32 pwm_mode;

        /* Can't adjust fan when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;


        err = kstrtoint(buf, 10, &value);
        if (err)
                return err;

        if (value == 0)
                pwm_mode = AMD_FAN_CTRL_AUTO;
        else if (value == 1)
                pwm_mode = AMD_FAN_CTRL_MANUAL;
        else
                return -EINVAL;

        if (is_support_sw_smu(adev)) {
                smu_set_fan_control_mode(&adev->smu, pwm_mode);
        } else {
                if (!adev->powerplay.pp_funcs->set_fan_control_mode)
                        return -EINVAL;
                amdgpu_dpm_set_fan_control_mode(adev, pwm_mode);
        }

        return count;
}

static ssize_t amdgpu_hwmon_show_vddgfx(struct device *dev,
                                        struct device_attribute *attr,
                                        char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        struct drm_device *ddev = adev->ddev;
        u32 vddgfx;
        int r, size = sizeof(vddgfx);

        /* Can't get voltage when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        /* get the voltage */
        r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_VDDGFX,
                                   (void *)&vddgfx, &size);
        if (r)
                return r;

        return snprintf(buf, PAGE_SIZE, "%d\n", vddgfx);
}

static ssize_t amdgpu_hwmon_show_vddgfx_label(struct device *dev,
                                              struct device_attribute *attr,
                                              char *buf)
{
        return snprintf(buf, PAGE_SIZE, "vddgfx\n");
}

static ssize_t amdgpu_hwmon_show_vddnb(struct device *dev,
                                       struct device_attribute *attr,
                                       char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        struct drm_device *ddev = adev->ddev;
        u32 vddnb;
        int r, size = sizeof(vddnb);

        /* only APUs have vddnb */
        if  (!(adev->flags & AMD_IS_APU))
                return -EINVAL;

        /* Can't get voltage when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        /* get the voltage */
        r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_VDDNB,
                                   (void *)&vddnb, &size);
        if (r)
                return r;

        return snprintf(buf, PAGE_SIZE, "%d\n", vddnb);
}

static ssize_t amdgpu_hwmon_show_vddnb_label(struct device *dev,
                                              struct device_attribute *attr,
                                              char *buf)
{
        return snprintf(buf, PAGE_SIZE, "vddnb\n");
}

static ssize_t amdgpu_hwmon_show_power_avg(struct device *dev,
                                           struct device_attribute *attr,
                                           char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        struct drm_device *ddev = adev->ddev;
        u32 query = 0;
        int r, size = sizeof(u32);
        unsigned uw;

        /* Can't get power when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        /* get the voltage */
        r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_GPU_POWER,
                                   (void *)&query, &size);
        if (r)
                return r;

        /* convert to microwatts */
        uw = (query >> 8) * 1000000 + (query & 0xff) * 1000;

        return snprintf(buf, PAGE_SIZE, "%u\n", uw);

}

static ssize_t amdgpu_hwmon_show_power_cap_min(struct device *dev,
                                         struct device_attribute *attr,
                                         char *buf)
{
        return sprintf(buf, "%i\n", 0);
}

static ssize_t amdgpu_hwmon_show_power_cap_max(struct device *dev,
                                         struct device_attribute *attr,
                                         char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        uint32_t limit = 0;

        if (is_support_sw_smu(adev)) {
                smu_get_power_limit(&adev->smu, &limit, true);
                return snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
        } else if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->get_power_limit) {
                adev->powerplay.pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit, true);
                return snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
        } else {
                return snprintf(buf, PAGE_SIZE, "\n");
        }
}

static ssize_t amdgpu_hwmon_show_power_cap(struct device *dev,
                                         struct device_attribute *attr,
                                         char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        uint32_t limit = 0;

        if (is_support_sw_smu(adev)) {
                smu_get_power_limit(&adev->smu, &limit, false);
                return snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
        } else if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->get_power_limit) {
                adev->powerplay.pp_funcs->get_power_limit(adev->powerplay.pp_handle, &limit, false);
                return snprintf(buf, PAGE_SIZE, "%u\n", limit * 1000000);
        } else {
                return snprintf(buf, PAGE_SIZE, "\n");
        }
}


static ssize_t amdgpu_hwmon_set_power_cap(struct device *dev,
                struct device_attribute *attr,
                const char *buf,
                size_t count)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        int err;
        u32 value;

        err = kstrtou32(buf, 10, &value);
        if (err)
                return err;

        value = value / 1000000; /* convert to Watt */
        if (is_support_sw_smu(adev)) {
                adev->smu.funcs->set_power_limit(&adev->smu, value);
        } else if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->set_power_limit) {
                err = adev->powerplay.pp_funcs->set_power_limit(adev->powerplay.pp_handle, value);
                if (err)
                        return err;
        } else {
                return -EINVAL;
        }

        return count;
}

static ssize_t amdgpu_hwmon_show_sclk(struct device *dev,
                                      struct device_attribute *attr,
                                      char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        struct drm_device *ddev = adev->ddev;
        uint32_t sclk;
        int r, size = sizeof(sclk);

        /* Can't get voltage when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        /* get the sclk */
        r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_GFX_SCLK,
                                   (void *)&sclk, &size);
        if (r)
                return r;

        return snprintf(buf, PAGE_SIZE, "%d\n", sclk * 10 * 1000);
}

static ssize_t amdgpu_hwmon_show_sclk_label(struct device *dev,
                                            struct device_attribute *attr,
                                            char *buf)
{
        return snprintf(buf, PAGE_SIZE, "sclk\n");
}

static ssize_t amdgpu_hwmon_show_mclk(struct device *dev,
                                      struct device_attribute *attr,
                                      char *buf)
{
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        struct drm_device *ddev = adev->ddev;
        uint32_t mclk;
        int r, size = sizeof(mclk);

        /* Can't get voltage when the card is off */
        if  ((adev->flags & AMD_IS_PX) &&
             (ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;

        /* get the sclk */
        r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_GFX_MCLK,
                                   (void *)&mclk, &size);
        if (r)
                return r;

        return snprintf(buf, PAGE_SIZE, "%d\n", mclk * 10 * 1000);
}

static ssize_t amdgpu_hwmon_show_mclk_label(struct device *dev,
                                            struct device_attribute *attr,
                                            char *buf)
{
        return snprintf(buf, PAGE_SIZE, "mclk\n");
}

/**
 * DOC: hwmon
 *
 * The amdgpu driver exposes the following sensor interfaces:
 *
 * - GPU temperature (via the on-die sensor)
 *
 * - GPU voltage
 *
 * - Northbridge voltage (APUs only)
 *
 * - GPU power
 *
 * - GPU fan
 *
 * - GPU gfx/compute engine clock
 *
 * - GPU memory clock (dGPU only)
 *
 * hwmon interfaces for GPU temperature:
 *
 * - temp[1-3]_input: the on die GPU temperature in millidegrees Celsius
 *   - temp2_input and temp3_input are supported on SOC15 dGPUs only
 *
 * - temp[1-3]_label: temperature channel label
 *   - temp2_label and temp3_label are supported on SOC15 dGPUs only
 *
 * - temp[1-3]_crit: temperature critical max value in millidegrees Celsius
 *   - temp2_crit and temp3_crit are supported on SOC15 dGPUs only
 *
 * - temp[1-3]_crit_hyst: temperature hysteresis for critical limit in millidegrees Celsius
 *   - temp2_crit_hyst and temp3_crit_hyst are supported on SOC15 dGPUs only
 *
 * - temp[1-3]_emergency: temperature emergency max value(asic shutdown) in millidegrees Celsius
 *   - these are supported on SOC15 dGPUs only
 *
 * hwmon interfaces for GPU voltage:
 *
 * - in0_input: the voltage on the GPU in millivolts
 *
 * - in1_input: the voltage on the Northbridge in millivolts
 *
 * hwmon interfaces for GPU power:
 *
 * - power1_average: average power used by the GPU in microWatts
 *
 * - power1_cap_min: minimum cap supported in microWatts
 *
 * - power1_cap_max: maximum cap supported in microWatts
 *
 * - power1_cap: selected power cap in microWatts
 *
 * hwmon interfaces for GPU fan:
 *
 * - pwm1: pulse width modulation fan level (0-255)
 *
 * - pwm1_enable: pulse width modulation fan control method (0: no fan speed control, 1: manual fan speed control using pwm interface, 2: automatic fan speed control)
 *
 * - pwm1_min: pulse width modulation fan control minimum level (0)
 *
 * - pwm1_max: pulse width modulation fan control maximum level (255)
 *
 * - fan1_min: an minimum value Unit: revolution/min (RPM)
 *
 * - fan1_max: an maxmum value Unit: revolution/max (RPM)
 *
 * - fan1_input: fan speed in RPM
 *
 * - fan[1-*]_target: Desired fan speed Unit: revolution/min (RPM)
 *
 * - fan[1-*]_enable: Enable or disable the sensors.1: Enable 0: Disable
 *
 * hwmon interfaces for GPU clocks:
 *
 * - freq1_input: the gfx/compute clock in hertz
 *
 * - freq2_input: the memory clock in hertz
 *
 * You can use hwmon tools like sensors to view this information on your system.
 *
 */

static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, amdgpu_hwmon_show_temp, NULL, PP_TEMP_EDGE);
static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, amdgpu_hwmon_show_temp_thresh, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IRUGO, amdgpu_hwmon_show_temp_thresh, NULL, 1);
static SENSOR_DEVICE_ATTR(temp1_emergency, S_IRUGO, amdgpu_hwmon_show_temp_emergency, NULL, PP_TEMP_EDGE);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, amdgpu_hwmon_show_temp, NULL, PP_TEMP_JUNCTION);
static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, amdgpu_hwmon_show_hotspot_temp_thresh, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, amdgpu_hwmon_show_hotspot_temp_thresh, NULL, 1);
static SENSOR_DEVICE_ATTR(temp2_emergency, S_IRUGO, amdgpu_hwmon_show_temp_emergency, NULL, PP_TEMP_JUNCTION);
static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, amdgpu_hwmon_show_temp, NULL, PP_TEMP_MEM);
static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO, amdgpu_hwmon_show_mem_temp_thresh, NULL, 0);
static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO, amdgpu_hwmon_show_mem_temp_thresh, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_emergency, S_IRUGO, amdgpu_hwmon_show_temp_emergency, NULL, PP_TEMP_MEM);
static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, amdgpu_hwmon_show_temp_label, NULL, PP_TEMP_EDGE);
static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, amdgpu_hwmon_show_temp_label, NULL, PP_TEMP_JUNCTION);
static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, amdgpu_hwmon_show_temp_label, NULL, PP_TEMP_MEM);
static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_pwm1, amdgpu_hwmon_set_pwm1, 0);
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_pwm1_enable, amdgpu_hwmon_set_pwm1_enable, 0);
static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO, amdgpu_hwmon_get_pwm1_min, NULL, 0);
static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO, amdgpu_hwmon_get_pwm1_max, NULL, 0);
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, amdgpu_hwmon_get_fan1_input, NULL, 0);
static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO, amdgpu_hwmon_get_fan1_min, NULL, 0);
static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, amdgpu_hwmon_get_fan1_max, NULL, 0);
static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_fan1_target, amdgpu_hwmon_set_fan1_target, 0);
static SENSOR_DEVICE_ATTR(fan1_enable, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_fan1_enable, amdgpu_hwmon_set_fan1_enable, 0);
static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, amdgpu_hwmon_show_vddgfx, NULL, 0);
static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, amdgpu_hwmon_show_vddgfx_label, NULL, 0);
static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, amdgpu_hwmon_show_vddnb, NULL, 0);
static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, amdgpu_hwmon_show_vddnb_label, NULL, 0);
static SENSOR_DEVICE_ATTR(power1_average, S_IRUGO, amdgpu_hwmon_show_power_avg, NULL, 0);
static SENSOR_DEVICE_ATTR(power1_cap_max, S_IRUGO, amdgpu_hwmon_show_power_cap_max, NULL, 0);
static SENSOR_DEVICE_ATTR(power1_cap_min, S_IRUGO, amdgpu_hwmon_show_power_cap_min, NULL, 0);
static SENSOR_DEVICE_ATTR(power1_cap, S_IRUGO | S_IWUSR, amdgpu_hwmon_show_power_cap, amdgpu_hwmon_set_power_cap, 0);
static SENSOR_DEVICE_ATTR(freq1_input, S_IRUGO, amdgpu_hwmon_show_sclk, NULL, 0);
static SENSOR_DEVICE_ATTR(freq1_label, S_IRUGO, amdgpu_hwmon_show_sclk_label, NULL, 0);
static SENSOR_DEVICE_ATTR(freq2_input, S_IRUGO, amdgpu_hwmon_show_mclk, NULL, 0);
static SENSOR_DEVICE_ATTR(freq2_label, S_IRUGO, amdgpu_hwmon_show_mclk_label, NULL, 0);

static struct attribute *hwmon_attributes[] = {
        &sensor_dev_attr_temp1_input.dev_attr.attr,
        &sensor_dev_attr_temp1_crit.dev_attr.attr,
        &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
        &sensor_dev_attr_temp2_input.dev_attr.attr,
        &sensor_dev_attr_temp2_crit.dev_attr.attr,
        &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
        &sensor_dev_attr_temp3_input.dev_attr.attr,
        &sensor_dev_attr_temp3_crit.dev_attr.attr,
        &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
        &sensor_dev_attr_temp1_emergency.dev_attr.attr,
        &sensor_dev_attr_temp2_emergency.dev_attr.attr,
        &sensor_dev_attr_temp3_emergency.dev_attr.attr,
        &sensor_dev_attr_temp1_label.dev_attr.attr,
        &sensor_dev_attr_temp2_label.dev_attr.attr,
        &sensor_dev_attr_temp3_label.dev_attr.attr,
        &sensor_dev_attr_pwm1.dev_attr.attr,
        &sensor_dev_attr_pwm1_enable.dev_attr.attr,
        &sensor_dev_attr_pwm1_min.dev_attr.attr,
        &sensor_dev_attr_pwm1_max.dev_attr.attr,
        &sensor_dev_attr_fan1_input.dev_attr.attr,
        &sensor_dev_attr_fan1_min.dev_attr.attr,
        &sensor_dev_attr_fan1_max.dev_attr.attr,
        &sensor_dev_attr_fan1_target.dev_attr.attr,
        &sensor_dev_attr_fan1_enable.dev_attr.attr,
        &sensor_dev_attr_in0_input.dev_attr.attr,
        &sensor_dev_attr_in0_label.dev_attr.attr,
        &sensor_dev_attr_in1_input.dev_attr.attr,
        &sensor_dev_attr_in1_label.dev_attr.attr,
        &sensor_dev_attr_power1_average.dev_attr.attr,
        &sensor_dev_attr_power1_cap_max.dev_attr.attr,
        &sensor_dev_attr_power1_cap_min.dev_attr.attr,
        &sensor_dev_attr_power1_cap.dev_attr.attr,
        &sensor_dev_attr_freq1_input.dev_attr.attr,
        &sensor_dev_attr_freq1_label.dev_attr.attr,
        &sensor_dev_attr_freq2_input.dev_attr.attr,
        &sensor_dev_attr_freq2_label.dev_attr.attr,
        NULL
};

static umode_t hwmon_attributes_visible(struct kobject *kobj,
                                        struct attribute *attr, int index)
{
        struct device *dev = kobj_to_dev(kobj);
        struct amdgpu_device *adev = dev_get_drvdata(dev);
        umode_t effective_mode = attr->mode;

        /* Skip fan attributes if fan is not present */
        if (adev->pm.no_fan && (attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
            attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
            attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
            attr == &sensor_dev_attr_pwm1_min.dev_attr.attr ||
            attr == &sensor_dev_attr_fan1_input.dev_attr.attr ||
            attr == &sensor_dev_attr_fan1_min.dev_attr.attr ||
            attr == &sensor_dev_attr_fan1_max.dev_attr.attr ||
            attr == &sensor_dev_attr_fan1_target.dev_attr.attr ||
            attr == &sensor_dev_attr_fan1_enable.dev_attr.attr))
                return 0;

        /* Skip fan attributes on APU */
        if ((adev->flags & AMD_IS_APU) &&
            (attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
             attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
             attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
             attr == &sensor_dev_attr_pwm1_min.dev_attr.attr ||
             attr == &sensor_dev_attr_fan1_input.dev_attr.attr ||
             attr == &sensor_dev_attr_fan1_min.dev_attr.attr ||
             attr == &sensor_dev_attr_fan1_max.dev_attr.attr ||
             attr == &sensor_dev_attr_fan1_target.dev_attr.attr ||
             attr == &sensor_dev_attr_fan1_enable.dev_attr.attr))
                return 0;

        /* Skip limit attributes if DPM is not enabled */
        if (!adev->pm.dpm_enabled &&
            (attr == &sensor_dev_attr_temp1_crit.dev_attr.attr ||
             attr == &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr ||
             attr == &sensor_dev_attr_pwm1.dev_attr.attr ||
             attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr ||
             attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
             attr == &sensor_dev_attr_pwm1_min.dev_attr.attr ||
             attr == &sensor_dev_attr_fan1_input.dev_attr.attr ||
             attr == &sensor_dev_attr_fan1_min.dev_attr.attr ||
             attr == &sensor_dev_attr_fan1_max.dev_attr.attr ||
             attr == &sensor_dev_attr_fan1_target.dev_attr.attr ||
             attr == &sensor_dev_attr_fan1_enable.dev_attr.attr))
                return 0;

        if (!is_support_sw_smu(adev)) {
                /* mask fan attributes if we have no bindings for this asic to expose */
                if ((!adev->powerplay.pp_funcs->get_fan_speed_percent &&
                     attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't query fan */
                    (!adev->powerplay.pp_funcs->get_fan_control_mode &&
                     attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't query state */
                        effective_mode &= ~S_IRUGO;

                if ((!adev->powerplay.pp_funcs->set_fan_speed_percent &&
                     attr == &sensor_dev_attr_pwm1.dev_attr.attr) || /* can't manage fan */
                    (!adev->powerplay.pp_funcs->set_fan_control_mode &&
                     attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr)) /* can't manage state */
                        effective_mode &= ~S_IWUSR;
        }

        if ((adev->flags & AMD_IS_APU) &&
            (attr == &sensor_dev_attr_power1_average.dev_attr.attr ||
             attr == &sensor_dev_attr_power1_cap_max.dev_attr.attr ||
             attr == &sensor_dev_attr_power1_cap_min.dev_attr.attr||
             attr == &sensor_dev_attr_power1_cap.dev_attr.attr))
                return 0;

        if (!is_support_sw_smu(adev)) {
                /* hide max/min values if we can't both query and manage the fan */
                if ((!adev->powerplay.pp_funcs->set_fan_speed_percent &&
                     !adev->powerplay.pp_funcs->get_fan_speed_percent) &&
                     (!adev->powerplay.pp_funcs->set_fan_speed_rpm &&
                     !adev->powerplay.pp_funcs->get_fan_speed_rpm) &&
                    (attr == &sensor_dev_attr_pwm1_max.dev_attr.attr ||
                     attr == &sensor_dev_attr_pwm1_min.dev_attr.attr))
                        return 0;

                if ((!adev->powerplay.pp_funcs->set_fan_speed_rpm &&
                     !adev->powerplay.pp_funcs->get_fan_speed_rpm) &&
                    (attr == &sensor_dev_attr_fan1_max.dev_attr.attr ||
                     attr == &sensor_dev_attr_fan1_min.dev_attr.attr))
                        return 0;
        }

        /* only APUs have vddnb */
        if (!(adev->flags & AMD_IS_APU) &&
            (attr == &sensor_dev_attr_in1_input.dev_attr.attr ||
             attr == &sensor_dev_attr_in1_label.dev_attr.attr))
                return 0;

        /* no mclk on APUs */
        if ((adev->flags & AMD_IS_APU) &&
            (attr == &sensor_dev_attr_freq2_input.dev_attr.attr ||
             attr == &sensor_dev_attr_freq2_label.dev_attr.attr))
                return 0;

        /* only SOC15 dGPUs support hotspot and mem temperatures */
        if (((adev->flags & AMD_IS_APU) ||
             adev->asic_type < CHIP_VEGA10) &&
            (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr ||
             attr == &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr ||
             attr == &sensor_dev_attr_temp3_crit.dev_attr.attr ||
             attr == &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr ||
             attr == &sensor_dev_attr_temp1_emergency.dev_attr.attr ||
             attr == &sensor_dev_attr_temp2_emergency.dev_attr.attr ||
             attr == &sensor_dev_attr_temp3_emergency.dev_attr.attr ||
             attr == &sensor_dev_attr_temp2_input.dev_attr.attr ||
             attr == &sensor_dev_attr_temp3_input.dev_attr.attr ||
             attr == &sensor_dev_attr_temp2_label.dev_attr.attr ||
             attr == &sensor_dev_attr_temp3_label.dev_attr.attr))
                return 0;

        return effective_mode;
}

static const struct attribute_group hwmon_attrgroup = {
        .attrs = hwmon_attributes,
        .is_visible = hwmon_attributes_visible,
};

static const struct attribute_group *hwmon_groups[] = {
        &hwmon_attrgroup,
        NULL
};

void amdgpu_dpm_thermal_work_handler(struct work_struct *work)
{
        struct amdgpu_device *adev =
                container_of(work, struct amdgpu_device,
                             pm.dpm.thermal.work);
        /* switch to the thermal state */
        enum amd_pm_state_type dpm_state = POWER_STATE_TYPE_INTERNAL_THERMAL;
        int temp, size = sizeof(temp);

        if (!adev->pm.dpm_enabled)
                return;

        if (!amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_GPU_TEMP,
                                    (void *)&temp, &size)) {
                if (temp < adev->pm.dpm.thermal.min_temp)
                        /* switch back the user state */
                        dpm_state = adev->pm.dpm.user_state;
        } else {
                if (adev->pm.dpm.thermal.high_to_low)
                        /* switch back the user state */
                        dpm_state = adev->pm.dpm.user_state;
        }
        mutex_lock(&adev->pm.mutex);
        if (dpm_state == POWER_STATE_TYPE_INTERNAL_THERMAL)
                adev->pm.dpm.thermal_active = true;
        else
                adev->pm.dpm.thermal_active = false;
        adev->pm.dpm.state = dpm_state;
        mutex_unlock(&adev->pm.mutex);

        amdgpu_pm_compute_clocks(adev);
}

static struct amdgpu_ps *amdgpu_dpm_pick_power_state(struct amdgpu_device *adev,
                                                     enum amd_pm_state_type dpm_state)
{
        int i;
        struct amdgpu_ps *ps;
        u32 ui_class;
        bool single_display = (adev->pm.dpm.new_active_crtc_count < 2) ?
                true : false;

        /* check if the vblank period is too short to adjust the mclk */
        if (single_display && adev->powerplay.pp_funcs->vblank_too_short) {
                if (amdgpu_dpm_vblank_too_short(adev))
                        single_display = false;
        }

        /* certain older asics have a separare 3D performance state,
         * so try that first if the user selected performance
         */
        if (dpm_state == POWER_STATE_TYPE_PERFORMANCE)
                dpm_state = POWER_STATE_TYPE_INTERNAL_3DPERF;
        /* balanced states don't exist at the moment */
        if (dpm_state == POWER_STATE_TYPE_BALANCED)
                dpm_state = POWER_STATE_TYPE_PERFORMANCE;

restart_search:
        /* Pick the best power state based on current conditions */
        for (i = 0; i < adev->pm.dpm.num_ps; i++) {
                ps = &adev->pm.dpm.ps[i];
                ui_class = ps->class & ATOM_PPLIB_CLASSIFICATION_UI_MASK;
                switch (dpm_state) {
                /* user states */
                case POWER_STATE_TYPE_BATTERY:
                        if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BATTERY) {
                                if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
                                        if (single_display)
                                                return ps;
                                } else
                                        return ps;
                        }
                        break;
                case POWER_STATE_TYPE_BALANCED:
                        if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BALANCED) {
                                if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
                                        if (single_display)
                                                return ps;
                                } else
                                        return ps;
                        }
                        break;
                case POWER_STATE_TYPE_PERFORMANCE:
                        if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_PERFORMANCE) {
                                if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
                                        if (single_display)
                                                return ps;
                                } else
                                        return ps;
                        }
                        break;
                /* internal states */
                case POWER_STATE_TYPE_INTERNAL_UVD:
                        if (adev->pm.dpm.uvd_ps)
                                return adev->pm.dpm.uvd_ps;
                        else
                                break;
                case POWER_STATE_TYPE_INTERNAL_UVD_SD:
                        if (ps->class & ATOM_PPLIB_CLASSIFICATION_SDSTATE)
                                return ps;
                        break;
                case POWER_STATE_TYPE_INTERNAL_UVD_HD:
                        if (ps->class & ATOM_PPLIB_CLASSIFICATION_HDSTATE)
                                return ps;
                        break;
                case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
                        if (ps->class & ATOM_PPLIB_CLASSIFICATION_HD2STATE)
                                return ps;
                        break;
                case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
                        if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_MVC)
                                return ps;
                        break;
                case POWER_STATE_TYPE_INTERNAL_BOOT:
                        return adev->pm.dpm.boot_ps;
                case POWER_STATE_TYPE_INTERNAL_THERMAL:
                        if (ps->class & ATOM_PPLIB_CLASSIFICATION_THERMAL)
                                return ps;
                        break;
                case POWER_STATE_TYPE_INTERNAL_ACPI:
                        if (ps->class & ATOM_PPLIB_CLASSIFICATION_ACPI)
                                return ps;
                        break;
                case POWER_STATE_TYPE_INTERNAL_ULV:
                        if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_ULV)
                                return ps;
                        break;
                case POWER_STATE_TYPE_INTERNAL_3DPERF:
                        if (ps->class & ATOM_PPLIB_CLASSIFICATION_3DPERFORMANCE)
                                return ps;
                        break;
                default:
                        break;
                }
        }
        /* use a fallback state if we didn't match */
        switch (dpm_state) {
        case POWER_STATE_TYPE_INTERNAL_UVD_SD:
                dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
                goto restart_search;
        case POWER_STATE_TYPE_INTERNAL_UVD_HD:
        case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
        case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
                if (adev->pm.dpm.uvd_ps) {
                        return adev->pm.dpm.uvd_ps;
                } else {
                        dpm_state = POWER_STATE_TYPE_PERFORMANCE;
                        goto restart_search;
                }
        case POWER_STATE_TYPE_INTERNAL_THERMAL:
                dpm_state = POWER_STATE_TYPE_INTERNAL_ACPI;
                goto restart_search;
        case POWER_STATE_TYPE_INTERNAL_ACPI:
                dpm_state = POWER_STATE_TYPE_BATTERY;
                goto restart_search;
        case POWER_STATE_TYPE_BATTERY:
        case POWER_STATE_TYPE_BALANCED:
        case POWER_STATE_TYPE_INTERNAL_3DPERF:
                dpm_state = POWER_STATE_TYPE_PERFORMANCE;
                goto restart_search;
        default:
                break;
        }

        return NULL;
}

static void amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev)
{
        struct amdgpu_ps *ps;
        enum amd_pm_state_type dpm_state;
        int ret;
        bool equal = false;

        /* if dpm init failed */
        if (!adev->pm.dpm_enabled)
                return;

        if (adev->pm.dpm.user_state != adev->pm.dpm.state) {
                /* add other state override checks here */
                if ((!adev->pm.dpm.thermal_active) &&
                    (!adev->pm.dpm.uvd_active))
                        adev->pm.dpm.state = adev->pm.dpm.user_state;
        }
        dpm_state = adev->pm.dpm.state;

        ps = amdgpu_dpm_pick_power_state(adev, dpm_state);
        if (ps)
                adev->pm.dpm.requested_ps = ps;
        else
                return;

        if (amdgpu_dpm == 1 && adev->powerplay.pp_funcs->print_power_state) {
                printk("switching from power state:\n");
                amdgpu_dpm_print_power_state(adev, adev->pm.dpm.current_ps);
                printk("switching to power state:\n");
                amdgpu_dpm_print_power_state(adev, adev->pm.dpm.requested_ps);
        }

        /* update whether vce is active */
        ps->vce_active = adev->pm.dpm.vce_active;
        if (adev->powerplay.pp_funcs->display_configuration_changed)
                amdgpu_dpm_display_configuration_changed(adev);

        ret = amdgpu_dpm_pre_set_power_state(adev);
        if (ret)
                return;

        if (adev->powerplay.pp_funcs->check_state_equal) {
                if (0 != amdgpu_dpm_check_state_equal(adev, adev->pm.dpm.current_ps, adev->pm.dpm.requested_ps, &equal))
                        equal = false;
        }

        if (equal)
                return;

        amdgpu_dpm_set_power_state(adev);
        amdgpu_dpm_post_set_power_state(adev);

        adev->pm.dpm.current_active_crtcs = adev->pm.dpm.new_active_crtcs;
        adev->pm.dpm.current_active_crtc_count = adev->pm.dpm.new_active_crtc_count;

        if (adev->powerplay.pp_funcs->force_performance_level) {
                if (adev->pm.dpm.thermal_active) {
                        enum amd_dpm_forced_level level = adev->pm.dpm.forced_level;
                        /* force low perf level for thermal */
                        amdgpu_dpm_force_performance_level(adev, AMD_DPM_FORCED_LEVEL_LOW);
                        /* save the user's level */
                        adev->pm.dpm.forced_level = level;
                } else {
                        /* otherwise, user selected level */
                        amdgpu_dpm_force_performance_level(adev, adev->pm.dpm.forced_level);
                }
        }
}

void amdgpu_dpm_enable_uvd(struct amdgpu_device *adev, bool enable)
{
        int ret = 0;
        if (is_support_sw_smu(adev)) {
            ret = smu_dpm_set_power_gate(&adev->smu, AMD_IP_BLOCK_TYPE_UVD, enable);
            if (ret)
                DRM_ERROR("[SW SMU]: dpm enable uvd failed, state = %s, ret = %d. \n",
                          enable ? "true" : "false", ret);
        } else if (adev->powerplay.pp_funcs->set_powergating_by_smu) {
                /* enable/disable UVD */
                mutex_lock(&adev->pm.mutex);
                amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_UVD, !enable);
                mutex_unlock(&adev->pm.mutex);
        }
        /* enable/disable Low Memory PState for UVD (4k videos) */
        if (adev->asic_type == CHIP_STONEY &&
                adev->uvd.decode_image_width >= WIDTH_4K) {
                struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;

                if (hwmgr && hwmgr->hwmgr_func &&
                    hwmgr->hwmgr_func->update_nbdpm_pstate)
                        hwmgr->hwmgr_func->update_nbdpm_pstate(hwmgr,
                                                               !enable,
                                                               true);
        }
}

void amdgpu_dpm_enable_vce(struct amdgpu_device *adev, bool enable)
{
        int ret = 0;
        if (is_support_sw_smu(adev)) {
            ret = smu_dpm_set_power_gate(&adev->smu, AMD_IP_BLOCK_TYPE_VCE, enable);
            if (ret)
                DRM_ERROR("[SW SMU]: dpm enable vce failed, state = %s, ret = %d. \n",
                          enable ? "true" : "false", ret);
        } else if (adev->powerplay.pp_funcs->set_powergating_by_smu) {
                /* enable/disable VCE */
                mutex_lock(&adev->pm.mutex);
                amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_VCE, !enable);
                mutex_unlock(&adev->pm.mutex);
        }
}

void amdgpu_pm_print_power_states(struct amdgpu_device *adev)
{
        int i;

        if (adev->powerplay.pp_funcs->print_power_state == NULL)
                return;

        for (i = 0; i < adev->pm.dpm.num_ps; i++)
                amdgpu_dpm_print_power_state(adev, &adev->pm.dpm.ps[i]);

}

int amdgpu_pm_virt_sysfs_init(struct amdgpu_device *adev)
{
        int ret = 0;

        if (!(amdgpu_sriov_vf(adev) && amdgim_is_hwperf(adev)))
                return ret;

        ret = device_create_file(adev->dev, &dev_attr_pp_dpm_sclk);
        if (ret) {
                DRM_ERROR("failed to create device file pp_dpm_sclk\n");
                return ret;
        }

        ret = device_create_file(adev->dev, &dev_attr_pp_dpm_mclk);
        if (ret) {
                DRM_ERROR("failed to create device file pp_dpm_mclk\n");
                return ret;
        }

        ret = device_create_file(adev->dev, &dev_attr_power_dpm_force_performance_level);
        if (ret) {
                DRM_ERROR("failed to create device file for dpm state\n");
                return ret;
        }

        return ret;
}

void amdgpu_pm_virt_sysfs_fini(struct amdgpu_device *adev)
{
        if (!(amdgpu_sriov_vf(adev) && amdgim_is_hwperf(adev)))
                return;

        device_remove_file(adev->dev, &dev_attr_power_dpm_force_performance_level);
        device_remove_file(adev->dev, &dev_attr_pp_dpm_sclk);
        device_remove_file(adev->dev, &dev_attr_pp_dpm_mclk);
}

int amdgpu_pm_load_smu_firmware(struct amdgpu_device *adev, uint32_t *smu_version)
{
        int r;

        if (adev->powerplay.pp_funcs && adev->powerplay.pp_funcs->load_firmware) {
                r = adev->powerplay.pp_funcs->load_firmware(adev->powerplay.pp_handle);
                if (r) {
                        pr_err("smu firmware loading failed\n");
                        return r;
                }
                *smu_version = adev->pm.fw_version;
        }
        return 0;
}

int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
{
        struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;
        int ret;

        if (adev->pm.sysfs_initialized)
                return 0;

        if (adev->pm.dpm_enabled == 0)
                return 0;

        adev->pm.int_hwmon_dev = hwmon_device_register_with_groups(adev->dev,
                                                                   DRIVER_NAME, adev,
                                                                   hwmon_groups);
        if (IS_ERR(adev->pm.int_hwmon_dev)) {
                ret = PTR_ERR(adev->pm.int_hwmon_dev);
                dev_err(adev->dev,
                        "Unable to register hwmon device: %d\n", ret);
                return ret;
        }

        ret = device_create_file(adev->dev, &dev_attr_power_dpm_state);
        if (ret) {
                DRM_ERROR("failed to create device file for dpm state\n");
                return ret;
        }
        ret = device_create_file(adev->dev, &dev_attr_power_dpm_force_performance_level);
        if (ret) {
                DRM_ERROR("failed to create device file for dpm state\n");
                return ret;
        }


        ret = device_create_file(adev->dev, &dev_attr_pp_num_states);
        if (ret) {
                DRM_ERROR("failed to create device file pp_num_states\n");
                return ret;
        }
        ret = device_create_file(adev->dev, &dev_attr_pp_cur_state);
        if (ret) {
                DRM_ERROR("failed to create device file pp_cur_state\n");
                return ret;
        }
        ret = device_create_file(adev->dev, &dev_attr_pp_force_state);
        if (ret) {
                DRM_ERROR("failed to create device file pp_force_state\n");
                return ret;
        }
        ret = device_create_file(adev->dev, &dev_attr_pp_table);
        if (ret) {
                DRM_ERROR("failed to create device file pp_table\n");
                return ret;
        }

        ret = device_create_file(adev->dev, &dev_attr_pp_dpm_sclk);
        if (ret) {
                DRM_ERROR("failed to create device file pp_dpm_sclk\n");
                return ret;
        }
        ret = device_create_file(adev->dev, &dev_attr_pp_dpm_mclk);
        if (ret) {
                DRM_ERROR("failed to create device file pp_dpm_mclk\n");
                return ret;
        }
        if (adev->asic_type >= CHIP_VEGA10) {
                ret = device_create_file(adev->dev, &dev_attr_pp_dpm_socclk);
                if (ret) {
                        DRM_ERROR("failed to create device file pp_dpm_socclk\n");
                        return ret;
                }
                ret = device_create_file(adev->dev, &dev_attr_pp_dpm_dcefclk);
                if (ret) {
                        DRM_ERROR("failed to create device file pp_dpm_dcefclk\n");
                        return ret;
                }
        }
        if (adev->asic_type >= CHIP_VEGA20) {
                ret = device_create_file(adev->dev, &dev_attr_pp_dpm_fclk);
                if (ret) {
                        DRM_ERROR("failed to create device file pp_dpm_fclk\n");
                        return ret;
                }
        }
        ret = device_create_file(adev->dev, &dev_attr_pp_dpm_pcie);
        if (ret) {
                DRM_ERROR("failed to create device file pp_dpm_pcie\n");
                return ret;
        }
        ret = device_create_file(adev->dev, &dev_attr_pp_sclk_od);
        if (ret) {
                DRM_ERROR("failed to create device file pp_sclk_od\n");
                return ret;
        }
        ret = device_create_file(adev->dev, &dev_attr_pp_mclk_od);
        if (ret) {
                DRM_ERROR("failed to create device file pp_mclk_od\n");
                return ret;
        }
        ret = device_create_file(adev->dev,
                        &dev_attr_pp_power_profile_mode);
        if (ret) {
                DRM_ERROR("failed to create device file "
                                "pp_power_profile_mode\n");
                return ret;
        }
        if ((is_support_sw_smu(adev) && adev->smu.od_enabled) ||
            (!is_support_sw_smu(adev) && hwmgr->od_enabled)) {
                ret = device_create_file(adev->dev,
                                &dev_attr_pp_od_clk_voltage);
                if (ret) {
                        DRM_ERROR("failed to create device file "
                                        "pp_od_clk_voltage\n");
                        return ret;
                }
        }
        ret = device_create_file(adev->dev,
                        &dev_attr_gpu_busy_percent);
        if (ret) {
                DRM_ERROR("failed to create device file "
                                "gpu_busy_level\n");
                return ret;
        }
        /* APU does not have its own dedicated memory */
        if (!(adev->flags & AMD_IS_APU) &&
             (adev->asic_type != CHIP_VEGA10)) {
                ret = device_create_file(adev->dev,
                                &dev_attr_mem_busy_percent);
                if (ret) {
                        DRM_ERROR("failed to create device file "
                                        "mem_busy_percent\n");
                        return ret;
                }
        }
        /* PCIe Perf counters won't work on APU nodes */
        if (!(adev->flags & AMD_IS_APU)) {
                ret = device_create_file(adev->dev, &dev_attr_pcie_bw);
                if (ret) {
                        DRM_ERROR("failed to create device file pcie_bw\n");
                        return ret;
                }
        }
        if (adev->unique_id)
                ret = device_create_file(adev->dev, &dev_attr_unique_id);
        if (ret) {
                DRM_ERROR("failed to create device file unique_id\n");
                return ret;
        }
        ret = amdgpu_debugfs_pm_init(adev);
        if (ret) {
                DRM_ERROR("Failed to register debugfs file for dpm!\n");
                return ret;
        }

        if ((adev->asic_type >= CHIP_VEGA10) &&
            !(adev->flags & AMD_IS_APU)) {
                ret = device_create_file(adev->dev,
                                &dev_attr_ppfeatures);
                if (ret) {
                        DRM_ERROR("failed to create device file "
                                        "ppfeatures\n");
                        return ret;
                }
        }

        adev->pm.sysfs_initialized = true;

        return 0;
}

void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev)
{
        struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;

        if (adev->pm.dpm_enabled == 0)
                return;

        if (adev->pm.int_hwmon_dev)
                hwmon_device_unregister(adev->pm.int_hwmon_dev);
        device_remove_file(adev->dev, &dev_attr_power_dpm_state);
        device_remove_file(adev->dev, &dev_attr_power_dpm_force_performance_level);

        device_remove_file(adev->dev, &dev_attr_pp_num_states);
        device_remove_file(adev->dev, &dev_attr_pp_cur_state);
        device_remove_file(adev->dev, &dev_attr_pp_force_state);
        device_remove_file(adev->dev, &dev_attr_pp_table);

        device_remove_file(adev->dev, &dev_attr_pp_dpm_sclk);
        device_remove_file(adev->dev, &dev_attr_pp_dpm_mclk);
        if (adev->asic_type >= CHIP_VEGA10) {
                device_remove_file(adev->dev, &dev_attr_pp_dpm_socclk);
                device_remove_file(adev->dev, &dev_attr_pp_dpm_dcefclk);
        }
        device_remove_file(adev->dev, &dev_attr_pp_dpm_pcie);
        if (adev->asic_type >= CHIP_VEGA20)
                device_remove_file(adev->dev, &dev_attr_pp_dpm_fclk);
        device_remove_file(adev->dev, &dev_attr_pp_sclk_od);
        device_remove_file(adev->dev, &dev_attr_pp_mclk_od);
        device_remove_file(adev->dev,
                        &dev_attr_pp_power_profile_mode);
        if ((is_support_sw_smu(adev) && adev->smu.od_enabled) ||
            (!is_support_sw_smu(adev) && hwmgr->od_enabled))
                device_remove_file(adev->dev,
                                &dev_attr_pp_od_clk_voltage);
        device_remove_file(adev->dev, &dev_attr_gpu_busy_percent);
        if (!(adev->flags & AMD_IS_APU) &&
             (adev->asic_type != CHIP_VEGA10))
                device_remove_file(adev->dev, &dev_attr_mem_busy_percent);
        if (!(adev->flags & AMD_IS_APU))
                device_remove_file(adev->dev, &dev_attr_pcie_bw);
        if (adev->unique_id)
                device_remove_file(adev->dev, &dev_attr_unique_id);
        if ((adev->asic_type >= CHIP_VEGA10) &&
            !(adev->flags & AMD_IS_APU))
                device_remove_file(adev->dev, &dev_attr_ppfeatures);
}

void amdgpu_pm_compute_clocks(struct amdgpu_device *adev)
{
        int i = 0;

        if (!adev->pm.dpm_enabled)
                return;

        if (adev->mode_info.num_crtc)
                amdgpu_display_bandwidth_update(adev);

        for (i = 0; i < AMDGPU_MAX_RINGS; i++) {
                struct amdgpu_ring *ring = adev->rings[i];
                if (ring && ring->sched.ready)
                        amdgpu_fence_wait_empty(ring);
        }

        if (is_support_sw_smu(adev)) {
                struct smu_dpm_context *smu_dpm = &adev->smu.smu_dpm;
                smu_handle_task(&adev->smu,
                                smu_dpm->dpm_level,
                                AMD_PP_TASK_DISPLAY_CONFIG_CHANGE);