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authorFelipe Balbi <balbi@ti.com>2012-07-19 13:56:07 +0300
committerFelipe Balbi <balbi@ti.com>2012-09-10 19:29:42 +0300
commita418cc4ea552884e9f2aa875aaa0afa1f0ffe07d (patch)
tree4b3433e71d0f027312947328f0766e40a002f6b1 /drivers/usb/dwc3
parente3ec3eb79481d23b7d371b6e9567e2b6972efc92 (diff)
usb: dwc3: omap: 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. Note that once OMAP's transceiver drivers reach mainline, this glue layer will change accordingly. Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3')
-rw-r--r--drivers/usb/dwc3/dwc3-omap.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 479dc047da3..ee57a10d90d 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -48,6 +48,9 @@
#include <linux/io.h>
#include <linux/of.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/nop-usb-xceiv.h>
+
#include "core.h"
/*
@@ -131,6 +134,8 @@ struct dwc3_omap {
spinlock_t lock;
struct platform_device *dwc3;
+ struct platform_device *usb2_phy;
+ struct platform_device *usb3_phy;
struct device *dev;
int irq;
@@ -152,6 +157,59 @@ static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value)
writel(value, base + offset);
}
+static int __devinit dwc3_omap_register_phys(struct dwc3_omap *omap)
+{
+ 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;
+
+ omap->usb2_phy = pdev;
+ pdata.type = USB_PHY_TYPE_USB2;
+
+ ret = platform_device_add_data(omap->usb2_phy, &pdata, sizeof(pdata));
+ if (ret)
+ goto err1;
+
+ pdev = platform_device_alloc("nop_usb_xceiv", 1);
+ if (!pdev) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ omap->usb3_phy = pdev;
+ pdata.type = USB_PHY_TYPE_USB3;
+
+ ret = platform_device_add_data(omap->usb3_phy, &pdata, sizeof(pdata));
+ if (ret)
+ goto err2;
+
+ ret = platform_device_add(omap->usb2_phy);
+ if (ret)
+ goto err2;
+
+ ret = platform_device_add(omap->usb3_phy);
+ if (ret)
+ goto err3;
+
+ return 0;
+
+err3:
+ platform_device_del(omap->usb2_phy);
+
+err2:
+ platform_device_put(omap->usb3_phy);
+
+err1:
+ platform_device_put(omap->usb2_phy);
+
+ return ret;
+}
static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
{
@@ -251,6 +309,12 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev)
return -ENOMEM;
}
+ ret = dwc3_omap_register_phys(omap);
+ if (ret) {
+ dev_err(dev, "couldn't register PHYs\n");
+ return ret;
+ }
+
devid = dwc3_get_device_id();
if (devid < 0)
return -ENODEV;
@@ -371,6 +435,8 @@ static int __devexit dwc3_omap_remove(struct platform_device *pdev)
struct dwc3_omap *omap = platform_get_drvdata(pdev);
platform_device_unregister(omap->dwc3);
+ platform_device_unregister(omap->usb2_phy);
+ platform_device_unregister(omap->usb3_phy);
dwc3_put_device_id(omap->dwc3->id);