drm/panel: simple: Allow GPIO accesses to sleep
The enable GPIO for panels may be provided by GPIO expanders on slow
busses (such as I2C), and therefore toggling the GPIO may sleep. Since
these accesses don't happen in interrupt context, use the *_cansleep()
variants of the GPIO API.
Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 71566d8..789c079 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -106,7 +106,7 @@
}
if (p->enable_gpio)
- gpiod_set_value(p->enable_gpio, 0);
+ gpiod_set_value_cansleep(p->enable_gpio, 0);
regulator_disable(p->supply);
p->enabled = false;
@@ -129,7 +129,7 @@
}
if (p->enable_gpio)
- gpiod_set_value(p->enable_gpio, 1);
+ gpiod_set_value_cansleep(p->enable_gpio, 1);
if (p->backlight) {
p->backlight->props.power = FB_BLANK_UNBLANK;