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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2012-05-11 17:25:54 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-05-11 16:56:15 -0700
commiteb70e5ab8f95a81283623c03d2c99dfc59fcb319 (patch)
treefc20c9d10484171490cf6b69f7f5b6f934803366 /drivers/usb/chipidea/host.h
parent758fc9860c19eceb56e5886a5225db623c521971 (diff)
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usb: chipidea: add host role
This adds EHCI host support to the chipidea driver. We want it to be part of the hdrc driver and not a standalone (sub-)driver module, as the structure of ehci-hcd.c suggests, so for chipidea controller we hack it to not provide platform-related code, but only the ehci hcd. The ehci-platform driver won't work for us here too, because the controller uses the same registers for both device and host mode and also otg-related bits, so it's not really possible to put ehci registers into a separate resource. This is not a pretty solution, but the alternative is exporting symbols from the chipidea driver to a ehci-chipidea driver and doing all the module refcounting. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea/host.h')
-rw-r--r--drivers/usb/chipidea/host.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/host.h b/drivers/usb/chipidea/host.h
new file mode 100644
index 000000000000..761fb1fd6d99
--- /dev/null
+++ b/drivers/usb/chipidea/host.h
@@ -0,0 +1,17 @@
+#ifndef __DRIVERS_USB_CHIPIDEA_HOST_H
+#define __DRIVERS_USB_CHIPIDEA_HOST_H
+
+#ifdef CONFIG_USB_CHIPIDEA_HOST
+
+int ci_hdrc_host_init(struct ci13xxx *ci);
+
+#else
+
+static inline int ci_hdrc_host_init(struct ci13xxx *ci)
+{
+ return -ENXIO;
+}
+
+#endif
+
+#endif /* __DRIVERS_USB_CHIPIDEA_HOST_H */