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DMAENGINE: define a dummy filter function for ste_dma40

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All platform data has to be made conditional on CONFIG_STEDMA40
or we can provide a simple dummy filter functions as to avoid
cluttering the code with other #ifdef:s.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Linus Walleij 2010-10-06 09:05:29 +00:00 committed by Dan Williams
parent 661385f9c3
commit 9646b7985e
1 changed files with 19 additions and 0 deletions
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19
arch/arm/plat-nomadik/include/plat/ste_dma40.h
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@ -162,6 +162,8 @@ struct stedma40_platform_data {
int disabled_channels[STEDMA40_MAX_PHYS]; int disabled_channels[STEDMA40_MAX_PHYS];
}; };
#ifdef CONFIG_STE_DMA40
/** /**
* stedma40_filter() - Provides stedma40_chan_cfg to the * stedma40_filter() - Provides stedma40_chan_cfg to the
* ste_dma40 dma driver via the dmaengine framework. * ste_dma40 dma driver via the dmaengine framework.
@ -223,4 +225,21 @@ dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan,
direction, flags); direction, flags);
} }
#else
static inline bool stedma40_filter(struct dma_chan *chan, void *data)
{
return false;
}
static inline struct
dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan,
dma_addr_t addr,
unsigned int size,
enum dma_data_direction direction,
unsigned long flags)
{
return NULL;
}
#endif
#endif #endif