[PATCH RFC 2/8] media: qcom: camss: csiphy: Introduce C-PHY

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

From: David Heidelberg <david@ixit.cz>

Read C-PHY 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.

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 895f80003c441..8f7d0e4c73075 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.h
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.h
@@ -28,11 +28,13 @@ struct csiphy_lane {
 
 /**
  * struct csiphy_lanes_cfg - CSIPHY lanes configuration
+ * @cphy:     true if C-PHY is used, false if D-PHY is used
  * @num_data: number of data lanes
  * @data:     data lanes configuration
  * @clk:      clock lane configuration (only for D-PHY)
  */
 struct csiphy_lanes_cfg {
+	bool cphy;
 	int num_data;
 	struct csiphy_lane *data;
 	struct csiphy_lane clk;
diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index fcc2b2c3cba07..549780f3f948b 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -4055,9 +4055,13 @@ static int camss_of_parse_endpoint_node(struct device *dev,
 	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->cphy = vep.bus_type == V4L2_MBUS_CSI2_CPHY;
+
+	if (!lncfg->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),

-- 
2.51.0