On 10/26/2016 10:03 AM, Alexandre Bailon wrote:
From: Petr Kulhavy <p...@barix.com>This adds the function musb_get_mode() to get the DT property "dr_mode" Signed-off-by: Petr Kulhavy <p...@barix.com> Acked-by: Sergei Shtylyov <sshtyl...@ru.mvista.com> Signed-off-by: Alexandre Bailon <abai...@baylibre.com> --- drivers/usb/musb/musb_core.c | 19 +++++++++++++++++++ drivers/usb/musb/musb_core.h | 5 +++++ 2 files changed, 24 insertions(+) diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 27dadc0..bba07e7 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -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 diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 2cb88a49..a406468 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -617,4 +617,9 @@ 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__ */
Tested working on LEGO MINDSTORMS EV3 using dr_mode = "peripheral" and no vbus-supply.
Tested-By: David Lechner <da...@lechnology.com>
