When device enters the suspend state, it prevents
HPD interrupts from occurring. To address this,
add an additional PM runtime vote in hpd_enable().
This vote is removed in hpd_disable().

Signed-off-by: Ayushi Makhija <quic_amakhija@quicinc.com>
---
 drivers/gpu/drm/bridge/analogix/anx7625.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index 0b97b66de577..99ef3f27ae42 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -2474,6 +2474,22 @@ static const struct drm_edid *anx7625_bridge_edid_read(struct drm_bridge *bridge
 	return anx7625_edid_read(ctx);
 }
 
+static void anx7625_bridge_hpd_enable(struct drm_bridge *bridge)
+{
+	struct anx7625_data *ctx = bridge_to_anx7625(bridge);
+	struct device *dev = ctx->dev;
+
+	pm_runtime_get_sync(dev);
+}
+
+static void anx7625_bridge_hpd_disable(struct drm_bridge *bridge)
+{
+	struct anx7625_data *ctx = bridge_to_anx7625(bridge);
+	struct device *dev = ctx->dev;
+
+	pm_runtime_put_sync(dev);
+}
+
 static const struct drm_bridge_funcs anx7625_bridge_funcs = {
 	.attach = anx7625_bridge_attach,
 	.detach = anx7625_bridge_detach,
@@ -2487,6 +2503,8 @@ static const struct drm_bridge_funcs anx7625_bridge_funcs = {
 	.atomic_reset = drm_atomic_helper_bridge_reset,
 	.detect = anx7625_bridge_detect,
 	.edid_read = anx7625_bridge_edid_read,
+	.hpd_enable = anx7625_bridge_hpd_enable,
+	.hpd_disable = anx7625_bridge_hpd_disable,
 };
 
 static int anx7625_register_i2c_dummy_clients(struct anx7625_data *ctx,
-- 
2.34.1

On Fri, Apr 04, 2025 at 05:25:37PM +0530, Ayushi Makhija wrote:
> When device enters the suspend state, it prevents
> HPD interrupts from occurring. To address this,
> add an additional PM runtime vote in hpd_enable().
> This vote is removed in hpd_disable().

Please re-wrap the commit message according to the recommendations. With
that fixed:


Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

> 
> Signed-off-by: Ayushi Makhija <quic_amakhija@quicinc.com>
> ---
>  drivers/gpu/drm/bridge/analogix/anx7625.c | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)

-- 
With best wishes
Dmitry