Adding babble_recovery operation as part of musb->ops, used
to recover from babble condition during babble interrupt.
Signed-off-by: Ravi Babu <ravibabu@xxxxxx>
---
drivers/usb/musb/musb_core.c | 6 ++++++
drivers/usb/musb/musb_core.h | 7 +++++++
2 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index ab6fa39..411c29d 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -857,6 +857,12 @@ b_host:
}
}
+ /* handle babble condition */
+ if (int_usb & MUSB_INTR_BABBLE) {
+ pr_info("babble: restarting the musb controller..");
+ musb_babble_recovery(musb);
+ }
+
#if 0
/* REVISIT ... this would be for multiplexing periodic endpoints, or
* supporting transfer phasing to prevent exceeding ISO bandwidth
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index f96e899..bf37dc9 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -213,6 +213,8 @@ struct musb_platform_ops {
int (*adjust_channel_params)(struct dma_channel *channel,
u16 packet_sz, u8 *mode,
dma_addr_t *dma_addr, u32 *len);
+
+ void (*babble_recovery)(struct musb *musb);
};
/*
@@ -590,4 +592,9 @@ static inline int musb_platform_exit(struct musb *musb)
return musb->ops->exit(musb);
}
+static inline void musb_babble_recovery(struct musb *musb)
+{
+ if (musb->ops->babble_recovery)
+ musb->ops->babble_recovery(musb);
+}
#endif /* __MUSB_CORE_H__ */
--
1.7.0.4
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