mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-03 07:38:10 +00:00
bus: mhi: Add mhi_queue_is_full function
This function can be used by client driver to determine whether it's possible to queue new elements in a channel ring. Signed-off-by: Loic Poulain <loic.poulain@linaro.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/1604424234-24446-1-git-send-email-loic.poulain@linaro.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
parent
5aee9484df
commit
d8c4a22363
2 changed files with 18 additions and 0 deletions
|
@ -1165,6 +1165,17 @@ int mhi_queue_buf(struct mhi_device *mhi_dev, enum dma_data_direction dir,
|
||||||
}
|
}
|
||||||
EXPORT_SYMBOL_GPL(mhi_queue_buf);
|
EXPORT_SYMBOL_GPL(mhi_queue_buf);
|
||||||
|
|
||||||
|
bool mhi_queue_is_full(struct mhi_device *mhi_dev, enum dma_data_direction dir)
|
||||||
|
{
|
||||||
|
struct mhi_controller *mhi_cntrl = mhi_dev->mhi_cntrl;
|
||||||
|
struct mhi_chan *mhi_chan = (dir == DMA_TO_DEVICE) ?
|
||||||
|
mhi_dev->ul_chan : mhi_dev->dl_chan;
|
||||||
|
struct mhi_ring *tre_ring = &mhi_chan->tre_ring;
|
||||||
|
|
||||||
|
return mhi_is_ring_full(mhi_cntrl, tre_ring);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL_GPL(mhi_queue_is_full);
|
||||||
|
|
||||||
int mhi_send_cmd(struct mhi_controller *mhi_cntrl,
|
int mhi_send_cmd(struct mhi_controller *mhi_cntrl,
|
||||||
struct mhi_chan *mhi_chan,
|
struct mhi_chan *mhi_chan,
|
||||||
enum mhi_cmd_type cmd)
|
enum mhi_cmd_type cmd)
|
||||||
|
|
|
@ -737,4 +737,11 @@ int mhi_queue_buf(struct mhi_device *mhi_dev, enum dma_data_direction dir,
|
||||||
int mhi_queue_skb(struct mhi_device *mhi_dev, enum dma_data_direction dir,
|
int mhi_queue_skb(struct mhi_device *mhi_dev, enum dma_data_direction dir,
|
||||||
struct sk_buff *skb, size_t len, enum mhi_flags mflags);
|
struct sk_buff *skb, size_t len, enum mhi_flags mflags);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* mhi_queue_is_full - Determine whether queueing new elements is possible
|
||||||
|
* @mhi_dev: Device associated with the channels
|
||||||
|
* @dir: DMA direction for the channel
|
||||||
|
*/
|
||||||
|
bool mhi_queue_is_full(struct mhi_device *mhi_dev, enum dma_data_direction dir);
|
||||||
|
|
||||||
#endif /* _MHI_H_ */
|
#endif /* _MHI_H_ */
|
||||||
|
|
Loading…
Reference in a new issue