[PATCH] drm: bridge: adv7511: Enable DRM_BRIDGE_OP_HPD based on HPD interrupt

[Kieran Bingham]

Quoting Biju Das (2022-04-19 15:24:53)
> 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.


Reviewed-by: Kieran Bingham <kieran.bingham+renesas at ideasonboard.com>

> 
> Signed-off-by: Biju Das <biju.das.jz at bp.renesas.com>
> ---
>  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;
>  
> -- 
> 2.25.1
>