usb: dwc3: exynos: add nop transceiver support
We will be adding support for transceivers on
dwc3 driver but not all boards have controllable
transceivers.
For those which don't provide controllable transceivers
we will register nop transceivers.
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index b8f0038..ca65978 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -19,16 +19,74 @@
#include <linux/platform_data/dwc3-exynos.h>
#include <linux/dma-mapping.h>
#include <linux/clk.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/nop-usb-xceiv.h>
#include "core.h"
struct dwc3_exynos {
struct platform_device *dwc3;
+ struct platform_device *usb2_phy;
+ struct platform_device *usb3_phy;
struct device *dev;
struct clk *clk;
};
+static int __devinit dwc3_exynos_register_phys(struct dwc3_exynos *exynos)
+{
+ struct nop_usb_xceiv_platform_data pdata;
+ struct platform_device *pdev;
+ int ret;
+
+ memset(&pdata, 0x00, sizeof(pdata));
+
+ pdev = platform_device_alloc("nop_usb_xceiv", 0);
+ if (!pdev)
+ return -ENOMEM;
+
+ exynos->usb2_phy = pdev;
+ pdata.type = USB_PHY_TYPE_USB2;
+
+ ret = platform_device_add_data(exynos->usb2_phy, &pdata, sizeof(pdata));
+ if (ret)
+ goto err1;
+
+ pdev = platform_device_alloc("nop_usb_xceiv", 1);
+ if (!pdev) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ exynos->usb3_phy = pdev;
+ pdata.type = USB_PHY_TYPE_USB3;
+
+ ret = platform_device_add_data(exynos->usb3_phy, &pdata, sizeof(pdata));
+ if (ret)
+ goto err2;
+
+ ret = platform_device_add(exynos->usb2_phy);
+ if (ret)
+ goto err2;
+
+ ret = platform_device_add(exynos->usb3_phy);
+ if (ret)
+ goto err3;
+
+ return 0;
+
+err3:
+ platform_device_del(exynos->usb2_phy);
+
+err2:
+ platform_device_put(exynos->usb3_phy);
+
+err1:
+ platform_device_put(exynos->usb2_phy);
+
+ return ret;
+}
+
static int __devinit dwc3_exynos_probe(struct platform_device *pdev)
{
struct dwc3_exynos_data *pdata = pdev->dev.platform_data;
@@ -51,6 +109,12 @@
if (devid < 0)
goto err1;
+ ret = dwc3_exynos_register_phys(exynos);
+ if (ret) {
+ dev_err(&pdev->dev, "couldn't register PHYs\n");
+ goto err1;
+ }
+
dwc3 = platform_device_alloc("dwc3", devid);
if (!dwc3) {
dev_err(&pdev->dev, "couldn't allocate dwc3 device\n");
@@ -120,6 +184,8 @@
struct dwc3_exynos_data *pdata = pdev->dev.platform_data;
platform_device_unregister(exynos->dwc3);
+ platform_device_unregister(exynos->usb2_phy);
+ platform_device_unregister(exynos->usb3_phy);
dwc3_put_device_id(exynos->dwc3->id);