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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2012-05-11 18:25:47 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-05-12 03:52:10 +0400
commit5f36e231e9dbffb5264612e5b5817ab574a5e5db (patch)
treea71027cded532334d3d51cbf737925240d34e7df /drivers/usb/chipidea/udc.h
parente443b333629f82ca0da91a05ca638050943bbedd (diff)
downloadlinux-5f36e231e9dbffb5264612e5b5817ab574a5e5db.tar.xz
usb: chipidea: add support for roles
Add some generic code for roles and implement simple role switching based on ID pin state and/or a sysfs file. At this, we also rename the device to ci_hdrc, which is what it is. The "manual" switch is made into a sysfs file and not debugfs, because it might be useful even in non-debug context. For some boards, like sheevaplug, it seems to be the only way to switch roles without modifying the hardware, since the ID pin is always grounded. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea/udc.h')
-rw-r--r--drivers/usb/chipidea/udc.h20
1 files changed, 5 insertions, 15 deletions
diff --git a/drivers/usb/chipidea/udc.h b/drivers/usb/chipidea/udc.h
index 82c9e3e772f7..3a9e6694f327 100644
--- a/drivers/usb/chipidea/udc.h
+++ b/drivers/usb/chipidea/udc.h
@@ -71,26 +71,16 @@ struct ci13xxx_req {
};
#ifdef CONFIG_USB_CHIPIDEA_UDC
-irqreturn_t udc_irq(int irq, void *data);
-int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
- void __iomem *regs, struct ci13xxx **_udc);
-void udc_remove(struct ci13xxx *udc);
+
+int ci_hdrc_gadget_init(struct ci13xxx *ci);
+
#else
-static inline irqreturn_t udc_irq(int irq, void *data)
-{
- return IRQ_NONE;
-}
-static inline
-int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
- void __iomem *regs, struct ci13xxx **_udc)
+static inline int ci_hdrc_gadget_init(struct ci13xxx *ci)
{
- return -ENODEV;
+ return -ENXIO;
}
-static inline void udc_remove(struct ci13xxx *udc)
-{
-}
#endif
#endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */