On Wed, Nov 27, 2024 at 11:02:20AM +0800, Xin Ji wrote:
> Update HDCP content_protection to DRM_MODE_CONTENT_PROTECTION_UNDESIRED
> in bridge .atomic_disable().
PLease describe why, not what.
>
> Signed-off-by: Xin Ji <x...@analogixsemi.com>
> ---
> drivers/gpu/drm/bridge/analogix/anx7625.c | 25 ++++++++++++++++++-----
> 1 file changed, 20 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c
> b/drivers/gpu/drm/bridge/analogix/anx7625.c
> index a2675b121fe4..a75f519ddcb8 100644
> --- a/drivers/gpu/drm/bridge/analogix/anx7625.c
> +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
> @@ -861,6 +861,22 @@ static int anx7625_hdcp_disable(struct anx7625_data *ctx)
> TX_HDCP_CTRL0, ~HARD_AUTH_EN & 0xFF);
> }
>
> +static void anx7625_hdcp_disable_and_update_cp(struct anx7625_data *ctx)
> +{
> + struct device *dev = ctx->dev;
> +
> + if (!ctx->connector)
> + return;
> +
> + anx7625_hdcp_disable(ctx);
> +
> + ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
> + drm_hdcp_update_content_protection(ctx->connector,
> + ctx->hdcp_cp);
> +
> + dev_dbg(dev, "update CP to UNDESIRE\n");
> +}
> +
> static int anx7625_hdcp_enable(struct anx7625_data *ctx)
> {
> u8 bcap;
> @@ -2165,11 +2181,8 @@ static int anx7625_connector_atomic_check(struct
> anx7625_data *ctx,
> dev_err(dev, "current CP is not ENABLED\n");
> return -EINVAL;
> }
> - anx7625_hdcp_disable(ctx);
> - ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
> - drm_hdcp_update_content_protection(ctx->connector,
> - ctx->hdcp_cp);
> - dev_dbg(dev, "update CP to UNDESIRE\n");
> +
> + anx7625_hdcp_disable_and_update_cp(ctx);
> }
>
> if (cp == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
> @@ -2449,6 +2462,8 @@ static void anx7625_bridge_atomic_disable(struct
> drm_bridge *bridge,
>
> dev_dbg(dev, "drm atomic disable\n");
>
> + anx7625_hdcp_disable_and_update_cp(ctx);
> +
> ctx->connector = NULL;
> anx7625_dp_stop(ctx);
>
> --
> 2.25.1
>
--
With best wishes
Dmitry
