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@xxxxxxxxxxx>
---
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 4be34d5c7a3b..764da1c1dc11 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
