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 <[email protected]>
Signed-off-by: Cristian Ciocaltea <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: cristicc

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,
 };