From: Thierry Reding treding@nvidia.com
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 --- drivers/gpu/drm/tegra/sor.c | 18 ++++++++++++++++-- 1 file 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 = {