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drm/amdgpu: add the common code to support mclk OD

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This implements mclk OverDrive(OD) through sysfs.
The new entry pp_mclk_od is read/write. The value of input/output
is an integer of the overclocking percentage.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2016-05-24 15:11:17 -04:00 committed by Alex Deucher
parent 6bb6b2972d
commit f2bdc05f77
5 changed files with 107 additions and 0 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -1563,6 +1563,8 @@ struct amdgpu_dpm_funcs {
int (*print_clock_levels)(struct amdgpu_device *adev, enum pp_clock_type type, char *buf);
int (*get_sclk_od)(struct amdgpu_device *adev);
int (*set_sclk_od)(struct amdgpu_device *adev, uint32_t value);
int (*get_mclk_od)(struct amdgpu_device *adev);
int (*set_mclk_od)(struct amdgpu_device *adev, uint32_t value);
};
struct amdgpu_dpm {
@ -2351,6 +2353,12 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
#define amdgpu_dpm_set_sclk_od(adev, value) \
(adev)->powerplay.pp_funcs->set_sclk_od((adev)->powerplay.pp_handle, value)
#define amdgpu_dpm_get_mclk_od(adev) \
((adev)->powerplay.pp_funcs->get_mclk_od((adev)->powerplay.pp_handle))
#define amdgpu_dpm_set_mclk_od(adev, value) \
((adev)->powerplay.pp_funcs->set_mclk_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))

55
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
View File

@ -527,6 +527,52 @@ static ssize_t amdgpu_set_pp_sclk_od(struct device *dev,
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 (adev->pp_enabled)
value = amdgpu_dpm_get_mclk_od(adev);
else if (adev->pm.funcs->get_mclk_od)
value = adev->pm.funcs->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 (adev->pp_enabled) {
amdgpu_dpm_set_mclk_od(adev, (uint32_t)value);
amdgpu_dpm_dispatch_task(adev, AMD_PP_EVENT_READJUST_POWER_STATE, NULL, NULL);
} else if (adev->pm.funcs->set_mclk_od) {
adev->pm.funcs->set_mclk_od(adev, (uint32_t)value);
adev->pm.dpm.current_ps = adev->pm.dpm.boot_ps;
amdgpu_pm_compute_clocks(adev);
}
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,
@ -551,6 +597,9 @@ static DEVICE_ATTR(pp_dpm_pcie, S_IRUGO | S_IWUSR,
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 ssize_t amdgpu_hwmon_show_temp(struct device *dev,
struct device_attribute *attr,
@ -1191,6 +1240,11 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
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 = amdgpu_debugfs_pm_init(adev);
if (ret) {
@ -1219,6 +1273,7 @@ void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev)
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);
device_remove_file(adev->dev, &dev_attr_pp_mclk_od);
}
void amdgpu_pm_compute_clocks(struct amdgpu_device *adev)

40
drivers/gpu/drm/amd/powerplay/amd_powerplay.c
View File

@ -848,6 +848,44 @@ static int pp_dpm_set_sclk_od(void *handle, uint32_t value)
return hwmgr->hwmgr_func->set_sclk_od(hwmgr, value);
}
static int pp_dpm_get_mclk_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_mclk_od == NULL) {
printk(KERN_INFO "%s was not implemented.\n", __func__);
return 0;
}
return hwmgr->hwmgr_func->get_mclk_od(hwmgr);
}
static int pp_dpm_set_mclk_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_mclk_od == NULL) {
printk(KERN_INFO "%s was not implemented.\n", __func__);
return 0;
}
return hwmgr->hwmgr_func->set_mclk_od(hwmgr, value);
}
const struct amd_powerplay_funcs pp_dpm_funcs = {
.get_temperature = pp_dpm_get_temperature,
.load_firmware = pp_dpm_load_fw,
@ -872,6 +910,8 @@ const struct amd_powerplay_funcs pp_dpm_funcs = {
.print_clock_levels = pp_dpm_print_clock_levels,
.get_sclk_od = pp_dpm_get_sclk_od,
.set_sclk_od = pp_dpm_set_sclk_od,
.get_mclk_od = pp_dpm_get_mclk_od,
.set_mclk_od = pp_dpm_set_mclk_od,
};
static int amd_pp_instance_init(struct amd_pp_init *pp_init,

2
drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h
View File

@ -345,6 +345,8 @@ struct amd_powerplay_funcs {
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);
int (*get_mclk_od)(void *handle);
int (*set_mclk_od)(void *handle, uint32_t value);
};
struct amd_powerplay {

2
drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
View File

@ -340,6 +340,8 @@ struct pp_hwmgr_func {
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);
int (*get_mclk_od)(struct pp_hwmgr *hwmgr);
int (*set_mclk_od)(struct pp_hwmgr *hwmgr, uint32_t value);
};
struct pp_table_func {