phy: rockchip: samsung-hdptx: Provide config params validation support

Implement the phy_ops.validate() callback to allow checking the PHY
configuration parameters without actually applying them.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20250318-phy-sam-hdptx-bpc-v6-10-8cb1678e7663@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c b/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c
index 62de40515338730a56a83972ad57a7e71c3ca5cb..80dd896861bcac6ef9dbde410327b893f8039627 100644 (file)
--- a/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c
+++ b/drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c
@@ -1799,10 +1799,22 @@ static int rk_hdptx_phy_configure(struct phy *phy, union phy_configure_opts *opt
        return 0;
 }
 
+static int rk_hdptx_phy_validate(struct phy *phy, enum phy_mode mode,
+                                int submode, union phy_configure_opts *opts)
+{
+       struct rk_hdptx_phy *hdptx = phy_get_drvdata(phy);
+
+       if (mode != PHY_MODE_DP)
+               return rk_hdptx_phy_verify_hdmi_config(hdptx, &opts->hdmi);
+
+       return rk_hdptx_phy_verify_dp_config(hdptx, &opts->dp);
+}
+
 static const struct phy_ops rk_hdptx_phy_ops = {
        .power_on  = rk_hdptx_phy_power_on,
        .power_off = rk_hdptx_phy_power_off,
        .configure = rk_hdptx_phy_configure,
+       .validate  = rk_hdptx_phy_validate,
        .owner     = THIS_MODULE,
 };