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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-21 20:05:46 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-21 20:05:46 -0400
commit6f68fbaafbaa033205cd131d3e1f3c4b914e9b78 (patch)
tree56b434496064ed170f94381e3ec4c6c340b71376 /drivers/dma/txx9dmac.c
parent6e4513972a5ad28517477d21f301a02ac7a0df76 (diff)
parent0b28330e39bbe0ffee4c56b09fc415fcec595ea3 (diff)
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: DMAENGINE: extend the control command to include an arg async_tx: trim dma_async_tx_descriptor in 'no channel switch' case DMAENGINE: DMA40 fix for allocation of logical channel 0 DMAENGINE: DMA40 support paused channel status dmaengine: mpc512x: Use resource_size DMA ENGINE: Do not reset 'private' of channel ioat: Remove duplicated devm_kzalloc() calls for ioatdma_device ioat3: disable cacheline-unaligned transfers for raid operations ioat2,3: convert to producer/consumer locking ioat: convert to circ_buf DMAENGINE: Support for ST-Ericssons DMA40 block v3 async_tx: use of kzalloc/kfree requires the include of slab.h dmaengine: provide helper for setting txstate DMAENGINE: generic channel status v2 DMAENGINE: generic slave control v2 dma: timb-dma: Update comment and fix compiler warning dma: Add timb-dma DMAENGINE: COH 901 318 fix bytesleft DMAENGINE: COH 901 318 rename confusing vars
Diffstat (limited to 'drivers/dma/txx9dmac.c')
-rw-r--r--drivers/dma/txx9dmac.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/dma/txx9dmac.c b/drivers/dma/txx9dmac.c
index 75fcf1ac8bb7..cbd83e362b5e 100644
--- a/drivers/dma/txx9dmac.c
+++ b/drivers/dma/txx9dmac.c
@@ -938,12 +938,17 @@ txx9dmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
938 return &first->txd; 938 return &first->txd;
939} 939}
940 940
941static void txx9dmac_terminate_all(struct dma_chan *chan) 941static int txx9dmac_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
942 unsigned long arg)
942{ 943{
943 struct txx9dmac_chan *dc = to_txx9dmac_chan(chan); 944 struct txx9dmac_chan *dc = to_txx9dmac_chan(chan);
944 struct txx9dmac_desc *desc, *_desc; 945 struct txx9dmac_desc *desc, *_desc;
945 LIST_HEAD(list); 946 LIST_HEAD(list);
946 947
948 /* Only supports DMA_TERMINATE_ALL */
949 if (cmd != DMA_TERMINATE_ALL)
950 return -EINVAL;
951
947 dev_vdbg(chan2dev(chan), "terminate_all\n"); 952 dev_vdbg(chan2dev(chan), "terminate_all\n");
948 spin_lock_bh(&dc->lock); 953 spin_lock_bh(&dc->lock);
949 954
@@ -958,12 +963,13 @@ static void txx9dmac_terminate_all(struct dma_chan *chan)
958 /* Flush all pending and queued descriptors */ 963 /* Flush all pending and queued descriptors */
959 list_for_each_entry_safe(desc, _desc, &list, desc_node) 964 list_for_each_entry_safe(desc, _desc, &list, desc_node)
960 txx9dmac_descriptor_complete(dc, desc); 965 txx9dmac_descriptor_complete(dc, desc);
966
967 return 0;
961} 968}
962 969
963static enum dma_status 970static enum dma_status
964txx9dmac_is_tx_complete(struct dma_chan *chan, 971txx9dmac_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
965 dma_cookie_t cookie, 972 struct dma_tx_state *txstate)
966 dma_cookie_t *done, dma_cookie_t *used)
967{ 973{
968 struct txx9dmac_chan *dc = to_txx9dmac_chan(chan); 974 struct txx9dmac_chan *dc = to_txx9dmac_chan(chan);
969 dma_cookie_t last_used; 975 dma_cookie_t last_used;
@@ -985,10 +991,7 @@ txx9dmac_is_tx_complete(struct dma_chan *chan,
985 ret = dma_async_is_complete(cookie, last_complete, last_used); 991 ret = dma_async_is_complete(cookie, last_complete, last_used);
986 } 992 }
987 993
988 if (done) 994 dma_set_tx_state(txstate, last_complete, last_used, 0);
989 *done = last_complete;
990 if (used)
991 *used = last_used;
992 995
993 return ret; 996 return ret;
994} 997}
@@ -1153,8 +1156,8 @@ static int __init txx9dmac_chan_probe(struct platform_device *pdev)
1153 dc->dma.dev = &pdev->dev; 1156 dc->dma.dev = &pdev->dev;
1154 dc->dma.device_alloc_chan_resources = txx9dmac_alloc_chan_resources; 1157 dc->dma.device_alloc_chan_resources = txx9dmac_alloc_chan_resources;
1155 dc->dma.device_free_chan_resources = txx9dmac_free_chan_resources; 1158 dc->dma.device_free_chan_resources = txx9dmac_free_chan_resources;
1156 dc->dma.device_terminate_all = txx9dmac_terminate_all; 1159 dc->dma.device_control = txx9dmac_control;
1157 dc->dma.device_is_tx_complete = txx9dmac_is_tx_complete; 1160 dc->dma.device_tx_status = txx9dmac_tx_status;
1158 dc->dma.device_issue_pending = txx9dmac_issue_pending; 1161 dc->dma.device_issue_pending = txx9dmac_issue_pending;
1159 if (pdata && pdata->memcpy_chan == ch) { 1162 if (pdata && pdata->memcpy_chan == ch) {
1160 dc->dma.device_prep_dma_memcpy = txx9dmac_prep_dma_memcpy; 1163 dc->dma.device_prep_dma_memcpy = txx9dmac_prep_dma_memcpy;