diff options
Diffstat (limited to 'include/linux/dmaengine.h')
-rw-r--r-- | include/linux/dmaengine.h | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index a3b6035b6c8..acbb364674f 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -29,7 +29,7 @@ #include <linux/dma-mapping.h> /** - * enum dma_state - resource PNP/power managment state + * enum dma_state - resource PNP/power management state * @DMA_RESOURCE_SUSPEND: DMA device going into low power state * @DMA_RESOURCE_RESUME: DMA device returning to full power * @DMA_RESOURCE_AVAILABLE: DMA device available to the system @@ -95,6 +95,15 @@ enum dma_transaction_type { #define DMA_TX_TYPE_END (DMA_INTERRUPT + 1) /** + * enum dma_prep_flags - DMA flags to augment operation preparation + * @DMA_PREP_INTERRUPT - trigger an interrupt (callback) upon completion of + * this transaction + */ +enum dma_prep_flags { + DMA_PREP_INTERRUPT = (1 << 0), +}; + +/** * dma_cap_mask_t - capabilities bitmap modeled after cpumask_t. * See linux/cpumask.h */ @@ -132,7 +141,7 @@ struct dma_chan { /* sysfs */ int chan_id; - struct class_device class_dev; + struct device dev; struct kref refcount; int slow_ref; @@ -142,6 +151,7 @@ struct dma_chan { struct dma_chan_percpu *local; }; +#define to_dma_chan(p) container_of(p, struct dma_chan, dev) void dma_chan_cleanup(struct kref *kref); @@ -208,8 +218,6 @@ typedef void (*dma_async_tx_callback)(void *dma_async_param); * descriptors * @chan: target channel for this operation * @tx_submit: set the prepared descriptor(s) to be executed by the engine - * @tx_set_dest: set a destination address in a hardware descriptor - * @tx_set_src: set a source address in a hardware descriptor * @callback: routine to call after this operation is complete * @callback_param: general parameter to pass to the callback routine * ---async_tx api specific fields--- @@ -226,10 +234,6 @@ struct dma_async_tx_descriptor { struct list_head tx_list; struct dma_chan *chan; dma_cookie_t (*tx_submit)(struct dma_async_tx_descriptor *tx); - void (*tx_set_dest)(dma_addr_t addr, - struct dma_async_tx_descriptor *tx, int index); - void (*tx_set_src)(dma_addr_t addr, - struct dma_async_tx_descriptor *tx, int index); dma_async_tx_callback callback; void *callback_param; struct list_head depend_list; @@ -278,15 +282,17 @@ struct dma_device { void (*device_free_chan_resources)(struct dma_chan *chan); struct dma_async_tx_descriptor *(*device_prep_dma_memcpy)( - struct dma_chan *chan, size_t len, int int_en); + struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, + size_t len, unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_xor)( - struct dma_chan *chan, unsigned int src_cnt, size_t len, - int int_en); + struct dma_chan *chan, dma_addr_t dest, dma_addr_t *src, + unsigned int src_cnt, size_t len, unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_zero_sum)( - struct dma_chan *chan, unsigned int src_cnt, size_t len, - u32 *result, int int_en); + struct dma_chan *chan, dma_addr_t *src, unsigned int src_cnt, + size_t len, u32 *result, unsigned long flags); struct dma_async_tx_descriptor *(*device_prep_dma_memset)( - struct dma_chan *chan, int value, size_t len, int int_en); + 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); |