[RFC PATCH v1 12/12] usb: typec: qcom: define the bridge's path

[Dmitry Baryshkov]

In order to notify the userspace about the DRM connector's USB-C port,
export the corresponding port's name as the bridge's path field.

Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
---
 drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c     | 11 +++++++----
 drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.c |  4 +++-
 drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.h |  6 ++++--
 3 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c 
b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
index b9d4856101c7..452dc6437861 100644
--- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
+++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
@@ -156,6 +156,7 @@ static int qcom_pmic_typec_probe(struct platform_device 
*pdev)
        struct device_node *np = dev->of_node;
        const struct pmic_typec_resources *res;
        struct regmap *regmap;
+       char *tcpm_name;
        u32 base[2];
        int ret;
 
@@ -211,10 +212,6 @@ static int qcom_pmic_typec_probe(struct platform_device 
*pdev)
        mutex_init(&tcpm->lock);
        platform_set_drvdata(pdev, tcpm);
 
-       tcpm->pmic_typec_drm = qcom_pmic_typec_init_drm(dev);
-       if (IS_ERR(tcpm->pmic_typec_drm))
-               return PTR_ERR(tcpm->pmic_typec_drm);
-
        tcpm->tcpc.fwnode = device_get_named_child_node(tcpm->dev, "connector");
        if (!tcpm->tcpc.fwnode)
                return -EINVAL;
@@ -225,6 +222,12 @@ static int qcom_pmic_typec_probe(struct platform_device 
*pdev)
                goto fwnode_remove;
        }
 
+       tcpm_name = tcpm_port_get_name(tcpm->tcpm_port);
+       tcpm->pmic_typec_drm = qcom_pmic_typec_init_drm(dev, tcpm_name);
+       kfree(tcpm_name);
+       if (IS_ERR(tcpm->pmic_typec_drm))
+               return PTR_ERR(tcpm->pmic_typec_drm);
+
        ret = qcom_pmic_typec_port_start(tcpm->pmic_typec_port,
                                         tcpm->tcpm_port);
        if (ret)
diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.c 
b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.c
index e202eb7b52db..7bd7f4bf3539 100644
--- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.c
+++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.c
@@ -21,7 +21,8 @@ static const struct drm_bridge_funcs 
qcom_pmic_typec_bridge_funcs = {
        .attach = qcom_pmic_typec_attach,
 };
 
-struct pmic_typec_drm *qcom_pmic_typec_init_drm(struct device *dev)
+struct pmic_typec_drm *qcom_pmic_typec_init_drm(struct device *dev,
+                                               const char *path)
 {
        struct pmic_typec_drm *tcpm_drm;
 
@@ -33,6 +34,7 @@ struct pmic_typec_drm *qcom_pmic_typec_init_drm(struct device 
*dev)
        tcpm_drm->bridge.of_node = of_get_child_by_name(dev->of_node, 
"connector");
        tcpm_drm->bridge.ops = DRM_BRIDGE_OP_HPD;
        tcpm_drm->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
+       tcpm_drm->bridge.path = devm_kstrdup(dev, path, GFP_KERNEL);
 
        return ERR_PTR(devm_drm_bridge_add(dev, &tcpm_drm->bridge));
 }
diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.h 
b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.h
index 01f4bb71346b..259c047265f7 100644
--- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.h
+++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.h
@@ -9,9 +9,11 @@
 struct pmic_typec_drm;
 
 #if IS_ENABLED(CONFIG_DRM)
-struct pmic_typec_drm *qcom_pmic_typec_init_drm(struct device *dev);
+struct pmic_typec_drm *qcom_pmic_typec_init_drm(struct device *dev,
+                                               const char *path);
 #else
-static inline pmic_typec_drm *qcom_pmic_typec_init_drm(struct device *dev)
+static inline pmic_typec_drm *qcom_pmic_typec_init_drm(struct device *dev,
+                                                      const char *path)
 {
        return NULL;
 }
-- 
2.39.2