[RFC PATCH v2 10/16] mmc: omap_hsmmc: convert to dma_request_slave_channel_compat()

[Matt Porter]

Convert dmaengine channel requests to use
dma_request_slave_channel_compat(). This supports the DT case of
platforms requiring channel selection from either the OMAP DMA or
the EDMA engine. AM33xx only boots from DT and is the only user
implementing EDMA so in the !DT case we can default to the OMAP DMA
filter.

Signed-off-by: Matt Porter <mporter at ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |   10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 54bfd0c..b327cd0 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1866,14 +1866,20 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_SLAVE, mask);
 
-	host->rx_chan = dma_request_channel(mask, omap_dma_filter_fn, &rx_req);
+	host->rx_chan =
+		dma_request_slave_channel_compat(mask, omap_dma_filter_fn,
+						 &rx_req, &pdev->dev, "rx");
+
 	if (!host->rx_chan) {
 		dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel %u\n", rx_req);
 		ret = -ENXIO;
 		goto err_irq;
 	}
 
-	host->tx_chan = dma_request_channel(mask, omap_dma_filter_fn, &tx_req);
+	host->tx_chan =
+		dma_request_slave_channel_compat(mask, omap_dma_filter_fn,
+						 &tx_req, &pdev->dev, "tx");
+
 	if (!host->tx_chan) {
 		dev_err(mmc_dev(host->mmc), "unable to obtain TX DMA engine channel %u\n", tx_req);
 		ret = -ENXIO;
-- 
1.7.9.5