forked from Minki/linux
Merge branch 'mhi-net-immutable' of https://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi
Needed by mhi-net patches. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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commit
2bca263cda
@ -260,6 +260,18 @@ int mhi_destroy_device(struct device *dev, void *data)
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return 0;
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}
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int mhi_get_free_desc_count(struct mhi_device *mhi_dev,
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enum dma_data_direction dir)
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{
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struct mhi_controller *mhi_cntrl = mhi_dev->mhi_cntrl;
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struct mhi_chan *mhi_chan = (dir == DMA_TO_DEVICE) ?
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mhi_dev->ul_chan : mhi_dev->dl_chan;
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struct mhi_ring *tre_ring = &mhi_chan->tre_ring;
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return get_nr_avail_ring_elements(mhi_cntrl, tre_ring);
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}
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EXPORT_SYMBOL_GPL(mhi_get_free_desc_count);
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void mhi_notify(struct mhi_device *mhi_dev, enum mhi_callback cb_reason)
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{
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struct mhi_driver *mhi_drv;
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@ -598,6 +598,15 @@ void mhi_set_mhi_state(struct mhi_controller *mhi_cntrl,
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*/
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void mhi_notify(struct mhi_device *mhi_dev, enum mhi_callback cb_reason);
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/**
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* mhi_get_free_desc_count - Get transfer ring length
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* Get # of TD available to queue buffers
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* @mhi_dev: Device associated with the channels
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* @dir: Direction of the channel
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*/
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int mhi_get_free_desc_count(struct mhi_device *mhi_dev,
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enum dma_data_direction dir);
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/**
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* mhi_prepare_for_power_up - Do pre-initialization before power up.
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* This is optional, call this before power up if
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