From: Mario Limonciello <[email protected]> In order to discover whether a GPU is part of a dGPU or APU userspace has to do some mental gymnastics or heuristics. Add a sysfs file that clearly indicates to userspace.
Signed-off-by: Mario Limonciello <[email protected]> --- drivers/gpu/drm/amd/pm/amdgpu_pm.c | 16 ++++++++++++++++ drivers/gpu/drm/amd/pm/inc/amdgpu_pm.h | 1 + 2 files changed, 17 insertions(+) diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c index edd9895b46c02..4e4c77488e334 100644 --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -945,6 +945,21 @@ static ssize_t amdgpu_get_pp_features(struct device *dev, return size; } +/** + * DOC: apu + * + * Represents whether GPU is on a dGPU (0) or APU (1) + */ +static ssize_t amdgpu_get_apu(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + + return sysfs_emit(buf, "%d\n", adev->flags & AMD_IS_APU ? 1 : 0); +} + /** * DOC: pp_dpm_sclk pp_dpm_mclk pp_dpm_socclk pp_dpm_fclk pp_dpm_dcefclk pp_dpm_pcie * @@ -2287,6 +2302,7 @@ static struct amdgpu_device_attr amdgpu_device_attrs[] = { .attr_update = ss_bias_attr_update), AMDGPU_DEVICE_ATTR_RO(pm_metrics, ATTR_FLAG_BASIC, .attr_update = amdgpu_pm_metrics_attr_update), + AMDGPU_DEVICE_ATTR_RO(apu, ATTR_FLAG_BASIC), }; static int default_attr_update(struct amdgpu_device *adev, struct amdgpu_device_attr *attr, diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_pm.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_pm.h index c12ced32f7808..ffd008c1e6ec2 100644 --- a/drivers/gpu/drm/amd/pm/inc/amdgpu_pm.h +++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_pm.h @@ -78,6 +78,7 @@ enum amdgpu_device_attr_id { device_attr_id__smartshift_dgpu_power, device_attr_id__smartshift_bias, device_attr_id__pm_metrics, + device_attr_id__apu, device_attr_id__count, }; -- 2.43.0
