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usb: musb: core: added helper function for parsing DT 

This adds the function musb_get_mode() to get the DT property "dr_mode"

Signed-off-by: Petr Kulhavy <petr@barix.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Tested-by: David Lechner <david@lechnology.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Petr Kulhavy 2016-11-21 08:59:28 -06:00 committed by Greg Kroah-Hartman
parent c92340ab32
commit 830fc64ca7
2 changed files with 25 additions and 0 deletions
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19
drivers/usb/musb/musb_core.c
View File

@ -100,6 +100,7 @@
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <linux/usb.h>
#include <linux/usb/of.h>
#include "musb_core.h"
#include "musb_trace.h"
@ -130,6 +131,24 @@ static inline struct musb *dev_to_musb(struct device *dev)
return dev_get_drvdata(dev);
}
enum musb_mode musb_get_mode(struct device *dev)
{
enum usb_dr_mode mode;
mode = usb_get_dr_mode(dev);
switch (mode) {
case USB_DR_MODE_HOST:
return MUSB_HOST;
case USB_DR_MODE_PERIPHERAL:
return MUSB_PERIPHERAL;
case USB_DR_MODE_OTG:
case USB_DR_MODE_UNKNOWN:
default:
return MUSB_OTG;
}
}
EXPORT_SYMBOL_GPL(musb_get_mode);
/*-------------------------------------------------------------------------*/
#ifndef CONFIG_BLACKFIN

6
drivers/usb/musb/musb_core.h
View File

@ -617,4 +617,10 @@ static inline void musb_platform_post_root_reset_end(struct musb *musb)
musb->ops->post_root_reset_end(musb);
}
/*
* gets the "dr_mode" property from DT and converts it into musb_mode
* if the property is not found or not recognized returns MUSB_OTG
*/
extern enum musb_mode musb_get_mode(struct device *dev);
#endif /* __MUSB_CORE_H__ */