[PATCH 03/16] phy: cdns-dphy: Allow setting mode

Pratyush Yadav
2021-03-30T17:35:15Z

Allow callers to set the PHY mode. The main mode should always be
PHY_MODE_MIPI_DPHY but the submode can either be
PHY_MIPI_DPHY_SUBMODE_RX or PHY_MIPI_DPHY_SUBMODE_TX. Update the ops
based on the requested submode.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
---
drivers/phy/cadence/cdns-dphy.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)

diff --git a/drivers/phy/cadence/cdns-dphy.c b/drivers/phy/cadence/cdns-dphy.c
index 8656f2102a91..7d5f7b333893 100644
--- a/drivers/phy/cadence/cdns-dphy.c
+++ b/drivers/phy/cadence/cdns-dphy.c
@@ -365,11 +365,41 @@ static int cdns_dphy_configure(struct phy *phy, union phy_configure_opts *opts)
return 0;
}

+static int cdns_dphy_set_mode(struct phy *phy, enum phy_mode mode, int submode)
+{
+ struct cdns_dphy *dphy = phy_get_drvdata(phy);
+ const struct cdns_dphy_driver_data *ddata;
+
+ ddata = of_device_get_match_data(dphy->dev);
+ if (!ddata)
+ return -EINVAL;
+
+ if (mode != PHY_MODE_MIPI_DPHY)
+ return -EINVAL;
+
+ if (submode == PHY_MIPI_DPHY_SUBMODE_TX) {
+ if (!ddata->tx)
+ return -EOPNOTSUPP;
+
+ dphy->ops = ddata->tx;
+ } else if (submode == PHY_MIPI_DPHY_SUBMODE_RX) {
+ if (!ddata->rx)
+ return -EOPNOTSUPP;
+
+ dphy->ops = ddata->rx;
+ } else {
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
static const struct phy_ops cdns_dphy_ops = {
.configure = cdns_dphy_configure,
.validate = cdns_dphy_validate,
.power_on = cdns_dphy_power_on,
.power_off = cdns_dphy_power_off,
+ .set_mode = cdns_dphy_set_mode,
};

static int cdns_dphy_probe(struct platform_device *pdev)
--
2.30.0