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dmaengine: sa11x0: add DMA filters

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Add DMA filters for the sa11x0 DMA channels.  This will allow us to
migrate away from directly using the DMA filter function in drivers.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Russell King 2017-09-26 15:10:02 +01:00 • committed by Vinod Koul
parent 2bd6bf03f4
commit 73d2a3cef4
1 changed files with 11 additions and 0 deletions
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11
drivers/dma/sa11x0-dma.c
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@ -823,6 +823,13 @@ static const struct sa11x0_dma_channel_desc chan_desc[] = {
CD(Ser4SSPRc, DDAR_RW), CD(Ser4SSPRc, DDAR_RW),
}; };
static const struct dma_slave_map sa11x0_dma_map[] = {
{ "sa11x0-ir", "tx", "Ser2ICPTr" },
{ "sa11x0-ir", "rx", "Ser2ICPRc" },
{ "sa11x0-ssp", "tx", "Ser4SSPTr" },
{ "sa11x0-ssp", "rx", "Ser4SSPRc" },
};
static int sa11x0_dma_init_dmadev(struct dma_device *dmadev, static int sa11x0_dma_init_dmadev(struct dma_device *dmadev,
struct device *dev) struct device *dev)
{ {
@ -909,6 +916,10 @@ static int sa11x0_dma_probe(struct platform_device *pdev)
spin_lock_init(&d->lock); spin_lock_init(&d->lock);
INIT_LIST_HEAD(&d->chan_pending); INIT_LIST_HEAD(&d->chan_pending);
d->slave.filter.fn = sa11x0_dma_filter_fn;
d->slave.filter.mapcnt = ARRAY_SIZE(sa11x0_dma_map);
d->slave.filter.map = sa11x0_dma_map;
d->base = ioremap(res->start, resource_size(res)); d->base = ioremap(res->start, resource_size(res));
if (!d->base) { if (!d->base) {
ret = -ENOMEM; ret = -ENOMEM;