[PATCH v9 2/9] media: qcom: camss: csiphy: Introduce PHY configuration

[David Heidelberg via B4 Relay <devnull+david.ixit.cz@kernel.org>]

From: David Heidelberg <david@ixit.cz>

Read PHY configuration from the device-tree bus-type and save it into
the csiphy structure for later use.

For C-PHY, skip clock line configuration, as there is none.

Acked-by: Cory Keitz <ckeitz@amazon.com>
Reviewed-by: Bryan O'Donoghue <bod@kernel.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
---
 drivers/media/platform/qcom/camss/camss-csiphy.h | 2 ++
 drivers/media/platform/qcom/camss/camss.c        | 8 ++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.h b/drivers/media/platform/qcom/camss/camss-csiphy.h
index 9d9657b82f748..2ebb307be18ba 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.h
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.h
@@ -25,21 +25,23 @@
 
 struct csiphy_lane {
 	u8 pos;
 	u8 pol;
 };
 
 /**
  * struct csiphy_lanes_cfg - CSIPHY lanes configuration
+ * @phy_cfg:  interface selection (C-PHY or D-PHY)
  * @num_data: number of data lanes
  * @data:     data lanes configuration
  * @clk:      clock lane configuration (only for D-PHY)
  */
 struct csiphy_lanes_cfg {
+	enum v4l2_mbus_type phy_cfg;
 	int num_data;
 	struct csiphy_lane *data;
 	struct csiphy_lane clk;
 };
 
 struct csiphy_csi2_cfg {
 	struct csiphy_lanes_cfg lane_cfg;
 };
diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index 2123f6388e3d7..072c428e25166 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -4761,19 +4761,23 @@ static int camss_parse_endpoint_node(struct device *dev,
 	if (vep.bus_type != V4L2_MBUS_CSI2_DPHY) {
 		dev_err(dev, "Unsupported bus type %d\n", vep.bus_type);
 		return -EINVAL;
 	}
 
 	csd->interface.csiphy_id = vep.base.port;
 
 	mipi_csi2 = &vep.bus.mipi_csi2;
-	lncfg->clk.pos = mipi_csi2->clock_lane;
-	lncfg->clk.pol = mipi_csi2->lane_polarities[0];
 	lncfg->num_data = mipi_csi2->num_data_lanes;
+	lncfg->phy_cfg = vep.bus_type;
+
+	if (lncfg->phy_cfg != V4L2_MBUS_CSI2_CPHY) {
+		lncfg->clk.pos = mipi_csi2->clock_lane;
+		lncfg->clk.pol = mipi_csi2->lane_polarities[0];
+	}
 
 	lncfg->data = devm_kcalloc(dev,
 				   lncfg->num_data, sizeof(*lncfg->data),
 				   GFP_KERNEL);
 	if (!lncfg->data)
 		return -ENOMEM;
 
 	for (i = 0; i < lncfg->num_data; i++) {

-- 
2.53.0