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drm/nouveau/tegra: Skip manual unpowergating when not necessary

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On Tegra186, powergating is handled by the BPMP power domain provider
and the "legacy" powergating API is not available. Therefore skip
these calls if we are attached to a power domain.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Mikko Perttunen
2017-06-09 15:25:39 +03:00
committed by Ben Skeggs
parent 3a93dd2243
commit b1df242544
1 changed files with 6 additions and 4 deletions
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10
drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
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@@ -51,10 +51,12 @@ nvkm_device_tegra_power_up(struct nvkm_device_tegra *tdev)
reset_control_assert(tdev->rst);
udelay(10);
ret = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D);
if (ret)
goto err_clamp;
udelay(10);
if (!tdev->pdev->dev.pm_domain) {
ret = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D);
if (ret)
goto err_clamp;
udelay(10);
}
reset_control_deassert(tdev->rst);
udelay(10);