diff options
| -rw-r--r-- | drivers/staging/comedi/drivers/mite.c | 23 | ||||
| -rw-r--r-- | drivers/staging/comedi/drivers/mite.h | 9 |
2 files changed, 28 insertions, 4 deletions
diff --git a/drivers/staging/comedi/drivers/mite.c b/drivers/staging/comedi/drivers/mite.c index ce479addf1b3..440090e87f2c 100644 --- a/drivers/staging/comedi/drivers/mite.c +++ b/drivers/staging/comedi/drivers/mite.c @@ -229,6 +229,10 @@ static u32 mite_device_bytes_transferred(struct mite_channel *mite_chan) return readl(mite->mmio + MITE_DAR(mite_chan->channel)); } +/** + * mite_bytes_in_transit() - Returns the number of unread bytes in the fifo. + * @mite_chan: MITE dma channel. + */ u32 mite_bytes_in_transit(struct mite_channel *mite_chan) { struct mite *mite = mite_chan->mite; @@ -349,6 +353,11 @@ static void mite_sync_output_dma(struct mite_channel *mite_chan, } } +/** + * mite_sync_dma() - Sync the MITE dma with the COMEDI async buffer. + * @mite_chan: MITE dma channel. + * @s: COMEDI subdevice. + */ void mite_sync_dma(struct mite_channel *mite_chan, struct comedi_subdevice *s) { if (mite_chan->dir == COMEDI_INPUT) @@ -376,6 +385,14 @@ static unsigned int mite_get_status(struct mite_channel *mite_chan) return status; } +/** + * mite_ack_linkc() - Check and ack the LINKC interrupt, + * @mite_chan: MITE dma channel. + * @s: COMEDI subdevice. + * @sync: flag to force a mite_sync_dma(). + * + * This will also ack the DONE interrupt if active. + */ void mite_ack_linkc(struct mite_channel *mite_chan, struct comedi_subdevice *s, bool sync) @@ -399,6 +416,12 @@ void mite_ack_linkc(struct mite_channel *mite_chan, } EXPORT_SYMBOL_GPL(mite_ack_linkc); +/** + * mite_done() - Check is a MITE dma transfer is complete. + * @mite_chan: MITE dma channel. + * + * This will also ack the DONE interrupt if active. + */ int mite_done(struct mite_channel *mite_chan) { struct mite *mite = mite_chan->mite; diff --git a/drivers/staging/comedi/drivers/mite.h b/drivers/staging/comedi/drivers/mite.h index c7ae3dbabc23..b6349aed97d0 100644 --- a/drivers/staging/comedi/drivers/mite.h +++ b/drivers/staging/comedi/drivers/mite.h @@ -60,11 +60,12 @@ struct mite { spinlock_t lock; }; -void mite_sync_dma(struct mite_channel *mite_chan, struct comedi_subdevice *s); -u32 mite_bytes_in_transit(struct mite_channel *mite_chan); -void mite_ack_linkc(struct mite_channel *, struct comedi_subdevice *, +u32 mite_bytes_in_transit(struct mite_channel *); + +void mite_sync_dma(struct mite_channel *, struct comedi_subdevice *); +void mite_ack_linkc(struct mite_channel *, struct comedi_subdevice *s, bool sync); -int mite_done(struct mite_channel *mite_chan); +int mite_done(struct mite_channel *); void mite_dma_arm(struct mite_channel *); void mite_dma_disarm(struct mite_channel *); |