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dmaengine: add wrapper functions for device control functions

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Add wrapper functions around the dma_device->device_control function
to bring back type safety. Also, add a wrapper function around
dma_async_tx_descriptor->tx_submit. This is named dmaengine_submit
instead of dmaengine_tx_submit to get rid of the confusing 'tx' in the
function name

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Sascha Hauer 2010-09-30 13:56:33 +00:00 committed by Dan Williams
parent 782bc950d8
commit 6e3ecaf0ad
1 changed files with 34 additions and 0 deletions
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34
include/linux/dmaengine.h
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@ -494,6 +494,40 @@ struct dma_device {
void (*device_issue_pending)(struct dma_chan *chan);
};
static inline int dmaengine_device_control(struct dma_chan *chan,
enum dma_ctrl_cmd cmd,
unsigned long arg)
{
return chan->device->device_control(chan, cmd, arg);
}
static inline int dmaengine_slave_config(struct dma_chan *chan,
struct dma_slave_config *config)
{
return dmaengine_device_control(chan, DMA_SLAVE_CONFIG,
(unsigned long)config);
}
static inline int dmaengine_terminate_all(struct dma_chan *chan)
{
return dmaengine_device_control(chan, DMA_TERMINATE_ALL, 0);
}
static inline int dmaengine_pause(struct dma_chan *chan)
{
return dmaengine_device_control(chan, DMA_PAUSE, 0);
}
static inline int dmaengine_resume(struct dma_chan *chan)
{
return dmaengine_device_control(chan, DMA_RESUME, 0);
}
static inline int dmaengine_submit(struct dma_async_tx_descriptor *desc)
{
return desc->tx_submit(desc);
}
static inline bool dmaengine_check_align(u8 align, size_t off1, size_t off2, size_t len)
{
size_t mask;