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| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2015-05-18 14:46:15 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-06-12 15:46:39 +0300 |
| commit | 4983a501afede12f95d26e1e213f8f2e9eda1871 (patch) | |
| tree | f16d35cf4bbd0aa3c97b09409e251d0f4ec63dae /include/linux/dmaengine.h | |
| parent | fbea28a2afb4251f985af52eb0180f097acaee16 (diff) | |
| download | linux-4983a501afede12f95d26e1e213f8f2e9eda1871.tar.xz | |
dmaengine: Revert "drivers/dma: remove unused support for MEMSET operations"
This reverts commit 48a9db462d99494583dad829969616ac90a8df4e.
Some platforms actually need support for the memset operations. Bring it back.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include/linux/dmaengine.h')
| -rw-r--r-- | include/linux/dmaengine.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index ad419757241f..19face3168b4 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -65,6 +65,7 @@ enum dma_transaction_type { DMA_PQ, DMA_XOR_VAL, DMA_PQ_VAL, + DMA_MEMSET, DMA_INTERRUPT, DMA_SG, DMA_PRIVATE, @@ -570,6 +571,7 @@ struct dma_tx_state { * @copy_align: alignment shift for memcpy operations * @xor_align: alignment shift for xor operations * @pq_align: alignment shift for pq operations + * @fill_align: alignment shift for memset operations * @dev_id: unique device ID * @dev: struct device reference for dma mapping api * @src_addr_widths: bit mask of src addr widths the device supports @@ -588,6 +590,7 @@ struct dma_tx_state { * @device_prep_dma_xor_val: prepares a xor validation operation * @device_prep_dma_pq: prepares a pq operation * @device_prep_dma_pq_val: prepares a pqzero_sum operation + * @device_prep_dma_memset: prepares a memset operation * @device_prep_dma_interrupt: prepares an end of chain interrupt operation * @device_prep_slave_sg: prepares a slave dma operation * @device_prep_dma_cyclic: prepare a cyclic dma operation suitable for audio. @@ -620,6 +623,7 @@ struct dma_device { u8 copy_align; u8 xor_align; u8 pq_align; + u8 fill_align; #define DMA_HAS_PQ_CONTINUE (1 << 15) int dev_id; @@ -650,6 +654,9 @@ struct dma_device { struct dma_chan *chan, dma_addr_t *pq, dma_addr_t *src, unsigned int src_cnt, const unsigned char *scf, size_t len, enum sum_check_flags *pqres, unsigned long flags); + struct dma_async_tx_descriptor *(*device_prep_dma_memset)( + struct dma_chan *chan, dma_addr_t dest, int value, size_t len, + unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_interrupt)( struct dma_chan *chan, unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_sg)( @@ -745,6 +752,17 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_interleaved_dma( return chan->device->device_prep_interleaved_dma(chan, xt, flags); } +static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memset( + struct dma_chan *chan, dma_addr_t dest, int value, size_t len, + unsigned long flags) +{ + if (!chan || !chan->device) + return NULL; + + return chan->device->device_prep_dma_memset(chan, dest, value, + len, flags); +} + static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_sg( struct dma_chan *chan, struct scatterlist *dst_sg, unsigned int dst_nents, @@ -820,6 +838,12 @@ static inline bool is_dma_pq_aligned(struct dma_device *dev, size_t off1, return dmaengine_check_align(dev->pq_align, off1, off2, len); } +static inline bool is_dma_fill_aligned(struct dma_device *dev, size_t off1, + size_t off2, size_t len) +{ + return dmaengine_check_align(dev->fill_align, off1, off2, len); +} + static inline void dma_set_maxpq(struct dma_device *dma, int maxpq, int has_pq_continue) { |