usb: chipidea: msm: Add device tree support

Allows controller to be specified via device tree.
Pass PHY phandle specified in DT to core driver.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 22 insertions, 1 deletions

diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c
index 2d51d852b474..736aeb2a53d6 100644
--- a/drivers/usb/chipidea/ci_hdrc_msm.c
+++ b/drivers/usb/chipidea/ci_hdrc_msm.c
@@ -57,9 +57,21 @@ static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = {
 static int ci_hdrc_msm_probe(struct platform_device *pdev)
 {
         struct platform_device *plat_ci;
+        struct usb_phy *phy;
 
         dev_dbg(&pdev->dev, "ci_hdrc_msm_probe\n");
 
+        /*
+         * OTG(PHY) driver takes care of PHY initialization, clock management,
+         * powering up VBUS, mapping of registers address space and power
+         * management.
+         */
+        phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0);
+        if (IS_ERR(phy))
+                return PTR_ERR(phy);
+
+        ci_hdrc_msm_platdata.phy = phy;
+
         plat_ci = ci_hdrc_add_device(&pdev->dev,
                                 pdev->resource, pdev->num_resources,
                                 &ci_hdrc_msm_platdata);
@@ -86,10 +98,19 @@ static int ci_hdrc_msm_remove(struct platform_device *pdev)
         return 0;
 }
 
+static const struct of_device_id msm_ci_dt_match[] = {
+        { .compatible = "qcom,ci-hdrc", },
+        { }
+};
+MODULE_DEVICE_TABLE(of, msm_ci_dt_match);
+
 static struct platform_driver ci_hdrc_msm_driver = {
         .probe = ci_hdrc_msm_probe,
         .remove = ci_hdrc_msm_remove,
-        .driver = { .name = "msm_hsusb", },
+        .driver = {
+                .name = "msm_hsusb",
+                .of_match_table = msm_ci_dt_match,
+        },
 };
 
 module_platform_driver(ci_hdrc_msm_driver);