[PATCH 1/8] dmaengine: sa11x0: add DMA filters

Russell King
2016-08-29T11:26:04Z

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>
---
drivers/dma/sa11x0-dma.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c
index 43db255050d2..565bc67fac7e 100644
--- a/drivers/dma/sa11x0-dma.c
+++ b/drivers/dma/sa11x0-dma.c
@@ -823,6 +823,13 @@ static const struct sa11x0_dma_channel_desc chan_desc[] = {
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,
struct device *dev)
{
@@ -909,6 +916,10 @@ static int sa11x0_dma_probe(struct platform_device *pdev)
spin_lock_init(&d->lock);
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));
if (!d->base) {
ret = -ENOMEM;
--
2.1.0