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-rw-r--r--drivers/gpu/drm/vc4/vc4_hdmi.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 6bcf51d..d8b8649 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -47,6 +47,7 @@ struct vc4_hdmi {
void __iomem *hdmicore_regs;
void __iomem *hd_regs;
int hpd_gpio;
+ bool hpd_active_low;
struct clk *pixel_clock;
struct clk *hsm_clock;
@@ -166,7 +167,8 @@ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force)
struct vc4_dev *vc4 = to_vc4_dev(dev);
if (vc4->hdmi->hpd_gpio) {
- if (gpio_get_value_cansleep(vc4->hdmi->hpd_gpio))
+ if (gpio_get_value_cansleep(vc4->hdmi->hpd_gpio) ^
+ vc4->hdmi->hpd_active_low)
return connector_status_connected;
else
return connector_status_disconnected;
@@ -517,11 +519,17 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
* we'll use the HDMI core's register.
*/
if (of_find_property(dev->of_node, "hpd-gpios", &value)) {
- hdmi->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0);
+ enum of_gpio_flags hpd_gpio_flags;
+
+ hdmi->hpd_gpio = of_get_named_gpio_flags(dev->of_node,
+ "hpd-gpios", 0,
+ &hpd_gpio_flags);
if (hdmi->hpd_gpio < 0) {
ret = hdmi->hpd_gpio;
goto err_unprepare_hsm;
}
+
+ hdmi->hpd_active_low = hpd_gpio_flags & OF_GPIO_ACTIVE_LOW;
}
vc4->hdmi = hdmi;
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