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| author |   Thierry Reding <treding@nvidia.com> | 2019-12-03 17:19:13 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2019-12-04 13:38:01 +0100 |
| commit | b06e145f7030bea2f307d3dc68a6b9aaf2dd905c (patch) | |
| tree | 17da945a5599e3f2c27c36298645f26d75d91e72 /drivers/gpu | |
| parent | drm/tegra: Silence expected errors on IOMMU attach (diff) | |
| download | linux-dev-b06e145f7030bea2f307d3dc68a6b9aaf2dd905c.tar.xz linux-dev-b06e145f7030bea2f307d3dc68a6b9aaf2dd905c.zip | |
drm/tegra: sor: Make the +5V HDMI supply optional
The SOR supports multiple display modes, but only when driving an HDMI
monitor does it make sense to control the +5V power supply. eDP and DP
don't need this, so make it optional.
This fixes a crash observed during system suspend/resume.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/tegra/sor.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 2200f4cd397a..a68d3b36b972 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -3970,15 +3970,29 @@ static int tegra_sor_runtime_resume(struct device *dev) static int tegra_sor_suspend(struct device *dev) { struct tegra_sor *sor = dev_get_drvdata(dev); + int err; + + if (sor->hdmi_supply) { + err = regulator_disable(sor->hdmi_supply); + if (err < 0) + return err; + } - return regulator_disable(sor->hdmi_supply); + return 0; } static int tegra_sor_resume(struct device *dev) { struct tegra_sor *sor = dev_get_drvdata(dev); + int err; + + if (sor->hdmi_supply) { + err = regulator_enable(sor->hdmi_supply); + if (err < 0) + return err; + } - return regulator_enable(sor->hdmi_supply); + return 0; } static const struct dev_pm_ops tegra_sor_pm_ops = { |