Commit 428bafa8 authored by Eric Huang's avatar Eric Huang Committed by Alex Deucher

drm/amdgpu: add powerplay sclk OD support through sysfs (v2)

Add a new sysfs entry pp_sclk_od to support sclk overdrive(OD) overclocking,
the entry is read/write, the value of input/output is an integer which is the
over percentage of the highest sclk.

v2: drop extra semicolon
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarEric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent b2ea0dcd
......@@ -2342,6 +2342,12 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
#define amdgpu_dpm_force_clock_level(adev, type, level) \
(adev)->powerplay.pp_funcs->force_clock_level((adev)->powerplay.pp_handle, type, level)
#define amdgpu_dpm_get_sclk_od(adev) \
(adev)->powerplay.pp_funcs->get_sclk_od((adev)->powerplay.pp_handle)
#define amdgpu_dpm_set_sclk_od(adev, value) \
(adev)->powerplay.pp_funcs->set_sclk_od((adev)->powerplay.pp_handle, value)
#define amdgpu_dpm_dispatch_task(adev, event_id, input, output) \
(adev)->powerplay.pp_funcs->dispatch_tasks((adev)->powerplay.pp_handle, (event_id), (input), (output))
......
......@@ -469,6 +469,46 @@ static ssize_t amdgpu_set_pp_dpm_pcie(struct device *dev,
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 (adev->pp_enabled)
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 (adev->pp_enabled)
amdgpu_dpm_set_sclk_od(adev, (uint32_t)value);
amdgpu_dpm_dispatch_task(adev, AMD_PP_EVENT_READJUST_POWER_STATE, NULL, NULL);
fail:
return count;
}
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,
......@@ -490,6 +530,9 @@ static DEVICE_ATTR(pp_dpm_mclk, S_IRUGO | S_IWUSR,
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 ssize_t amdgpu_hwmon_show_temp(struct device *dev,
struct device_attribute *attr,
......@@ -1123,6 +1166,11 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
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 = amdgpu_debugfs_pm_init(adev);
if (ret) {
......@@ -1149,6 +1197,7 @@ void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev)
device_remove_file(adev->dev, &dev_attr_pp_dpm_sclk);
device_remove_file(adev->dev, &dev_attr_pp_dpm_mclk);
device_remove_file(adev->dev, &dev_attr_pp_dpm_pcie);
device_remove_file(adev->dev, &dev_attr_pp_sclk_od);
}
}
......
......@@ -536,6 +536,10 @@ int pp_dpm_dispatch_tasks(void *handle, enum amd_pp_event event_id, void *input,
case AMD_PP_EVENT_COMPLETE_INIT:
ret = pem_handle_event(pp_handle->eventmgr, event_id, &data);
break;
case AMD_PP_EVENT_READJUST_POWER_STATE:
pp_handle->hwmgr->current_ps = pp_handle->hwmgr->boot_ps;
ret = pem_handle_event(pp_handle->eventmgr, event_id, &data);
break;
default:
break;
}
......@@ -806,6 +810,44 @@ static int pp_dpm_print_clock_levels(void *handle,
return hwmgr->hwmgr_func->print_clock_levels(hwmgr, type, buf);
}
static int pp_dpm_get_sclk_od(void *handle)
{
struct pp_hwmgr *hwmgr;
if (!handle)
return -EINVAL;
hwmgr = ((struct pp_instance *)handle)->hwmgr;
PP_CHECK_HW(hwmgr);
if (hwmgr->hwmgr_func->get_sclk_od == NULL) {
printk(KERN_INFO "%s was not implemented.\n", __func__);
return 0;
}
return hwmgr->hwmgr_func->get_sclk_od(hwmgr);
}
static int pp_dpm_set_sclk_od(void *handle, uint32_t value)
{
struct pp_hwmgr *hwmgr;
if (!handle)
return -EINVAL;
hwmgr = ((struct pp_instance *)handle)->hwmgr;
PP_CHECK_HW(hwmgr);
if (hwmgr->hwmgr_func->set_sclk_od == NULL) {
printk(KERN_INFO "%s was not implemented.\n", __func__);
return 0;
}
return hwmgr->hwmgr_func->set_sclk_od(hwmgr, value);
}
const struct amd_powerplay_funcs pp_dpm_funcs = {
.get_temperature = pp_dpm_get_temperature,
.load_firmware = pp_dpm_load_fw,
......@@ -828,6 +870,8 @@ const struct amd_powerplay_funcs pp_dpm_funcs = {
.set_pp_table = pp_dpm_set_pp_table,
.force_clock_level = pp_dpm_force_clock_level,
.print_clock_levels = pp_dpm_print_clock_levels,
.get_sclk_od = pp_dpm_get_sclk_od,
.set_sclk_od = pp_dpm_set_sclk_od,
};
static int amd_pp_instance_init(struct amd_pp_init *pp_init,
......
......@@ -342,6 +342,8 @@ struct amd_powerplay_funcs {
int (*set_pp_table)(void *handle, const char *buf, size_t size);
int (*force_clock_level)(void *handle, enum pp_clock_type type, uint32_t mask);
int (*print_clock_levels)(void *handle, enum pp_clock_type type, char *buf);
int (*get_sclk_od)(void *handle);
int (*set_sclk_od)(void *handle, uint32_t value);
};
struct amd_powerplay {
......
......@@ -338,6 +338,8 @@ struct pp_hwmgr_func {
int (*force_clock_level)(struct pp_hwmgr *hwmgr, enum pp_clock_type type, uint32_t mask);
int (*print_clock_levels)(struct pp_hwmgr *hwmgr, enum pp_clock_type type, char *buf);
int (*enable_per_cu_power_gating)(struct pp_hwmgr *hwmgr, bool enable);
int (*get_sclk_od)(struct pp_hwmgr *hwmgr);
int (*set_sclk_od)(struct pp_hwmgr *hwmgr, uint32_t value);
};
struct pp_table_func {
......
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