From d16095adaa0337031438cbfc2cb8626037390f3d Mon Sep 17 00:00:00 2001
From: Biju Das <biju.das.jz@bp.renesas.com>
Date: Tue, 19 Apr 2022 15:24:53 +0100
Subject: drm: bridge: adv7511: Enable DRM_BRIDGE_OP_HPD based on HPD interrupt
Git-commit: 04b19d32213654e54ec819b6ac033360f1551902
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Connector detection using poll method won't work in case of bridge
attached to the encoder with the flag DRM_BRIDGE_ATTACH_NO_CONNECTOR, as
the code defaults to HPD.
Enable DRM_BRIDGE_OP_HPD based on HPD interrupt availability, so that
it will fall back to polling, if HPD is not available.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220419142453.48839-1-biju.das.jz@bp.renesas.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index 668dcefbae17..b3f10c54e064 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -1292,8 +1292,10 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
goto err_unregister_cec;
adv7511->bridge.funcs = &adv7511_bridge_funcs;
- adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
- | DRM_BRIDGE_OP_HPD;
+ adv7511->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID;
+ if (adv7511->i2c_main->irq)
+ adv7511->bridge.ops |= DRM_BRIDGE_OP_HPD;
+
adv7511->bridge.of_node = dev->of_node;
adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
--
2.38.1