drivers/dma/mxs-dma.c

110 	struct dma_chan			chan;
178 static struct mxs_dma_chan *to_mxs_dma_chan(struct dma_chan *chan)
180 	return container_of(chan, struct mxs_dma_chan, chan);
183 static void mxs_dma_reset_chan(struct dma_chan *chan)
185 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
187 	int chan_id = mxs_chan->chan.chan_id;
232 static void mxs_dma_enable_chan(struct dma_chan *chan)
234 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
236 	int chan_id = mxs_chan->chan.chan_id;
255 static void mxs_dma_disable_chan(struct dma_chan *chan)
257 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
262 static int mxs_dma_pause_chan(struct dma_chan *chan)
264 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
266 	int chan_id = mxs_chan->chan.chan_id;
280 static int mxs_dma_resume_chan(struct dma_chan *chan)
282 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
284 	int chan_id = mxs_chan->chan.chan_id;
327 	int chan = mxs_dma_irq_to_chan(mxs_dma, irq);
329 	if (chan < 0)
334 	completed = (completed >> chan) & 0x1;
337 	writel((1 << chan),
342 	err &= (1 << (MXS_DMA_CHANNELS + chan)) | (1 << chan);
349 	err = (err >> (MXS_DMA_CHANNELS + chan)) + (err >> chan);
352 	writel((1 << chan),
364 	mxs_chan = &mxs_dma->mxs_chans[chan];
369 			chan);
371 		mxs_dma_reset_chan(&mxs_chan->chan);
377 					HW_APBHX_CHn_SEMA(mxs_dma, chan));
395 static int mxs_dma_alloc_chan_resources(struct dma_chan *chan)
397 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
418 	mxs_dma_reset_chan(chan);
420 	dma_async_tx_descriptor_init(&mxs_chan->desc, chan);
437 static void mxs_dma_free_chan_resources(struct dma_chan *chan)
439 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
442 	mxs_dma_disable_chan(chan);
475 		struct dma_chan *chan, struct scatterlist *sgl,
479 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
574 		struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
578 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
638 static int mxs_dma_terminate_all(struct dma_chan *chan)
640 	mxs_dma_reset_chan(chan);
641 	mxs_dma_disable_chan(chan);
646 static enum dma_status mxs_dma_tx_status(struct dma_chan *chan,
649 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
662 				HW_APBHX_CHn_BAR(mxs_dma, chan->chan_id));
666 	dma_set_tx_state(txstate, chan->completed_cookie, chan->cookie,
705 static bool mxs_dma_filter_fn(struct dma_chan *chan, void *fn_param)
708 	struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
712 	if (chan->chan_id != param->chan_id)
782 		mxs_chan->chan.device = &mxs_dma->dma_device;
783 		dma_cookie_init(&mxs_chan->chan);
789 		list_add_tail(&mxs_chan->chan.device_node,