[PATCH 1/8] dmaengine: sa11x0: add DMA filters
From: Russell King <hidden>
Date: 2016-08-29 11:26:04
Also in:
linux-arm-kernel
Subsystem:
dma generic offload engine subsystem, the rest · Maintainers:
Vinod Koul, Linus Torvalds
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 <redacted> --- 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