dmaengine: bcm2835: Split device_control

Split the device_control callback of the Broadcom BCM2835 DMA driver to make
use of the newly introduced callbacks, that will eventually be used to retrieve
slave capabilities.
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

drivers/dma/bcm2835-dma.c

@@ -436,9 +436,11 @@ static struct dma_async_tx_descriptor *bcm2835_dma_prep_dma_cyclic(
 	return vchan_tx_prep(&c->vc, &d->vd, flags);
 }
 
-static int bcm2835_dma_slave_config(struct bcm2835_chan *c,
+static int bcm2835_dma_slave_config(struct dma_chan *chan,
 				    struct dma_slave_config *cfg)
 {
+	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
+
 	if ((cfg->direction == DMA_DEV_TO_MEM &&
 	     cfg->src_addr_width != DMA_SLAVE_BUSWIDTH_4_BYTES) ||
 	    (cfg->direction == DMA_MEM_TO_DEV &&
@@ -452,8 +454,9 @@ static int bcm2835_dma_slave_config(struct bcm2835_chan *c,
 	return 0;
 }
 
-static int bcm2835_dma_terminate_all(struct bcm2835_chan *c)
+static int bcm2835_dma_terminate_all(struct dma_chan *chan)
 {
+	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
 	struct bcm2835_dmadev *d = to_bcm2835_dma_dev(c->vc.chan.device);
 	unsigned long flags;
 	int timeout = 10000;
@@ -495,24 +498,6 @@ static int bcm2835_dma_terminate_all(struct bcm2835_chan *c)
 	return 0;
 }
 
-static int bcm2835_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
-	unsigned long arg)
-{
-	struct bcm2835_chan *c = to_bcm2835_dma_chan(chan);
-
-	switch (cmd) {
-	case DMA_SLAVE_CONFIG:
-		return bcm2835_dma_slave_config(c,
-				(struct dma_slave_config *)arg);
-
-	case DMA_TERMINATE_ALL:
-		return bcm2835_dma_terminate_all(c);
-
-	default:
-		return -ENXIO;
-	}
-}
-
 static int bcm2835_dma_chan_init(struct bcm2835_dmadev *d, int chan_id, int irq)
 {
 	struct bcm2835_chan *c;
@@ -615,9 +600,9 @@ static int bcm2835_dma_probe(struct platform_device *pdev)
 	od->ddev.device_free_chan_resources = bcm2835_dma_free_chan_resources;
 	od->ddev.device_tx_status = bcm2835_dma_tx_status;
 	od->ddev.device_issue_pending = bcm2835_dma_issue_pending;
-	od->ddev.device_slave_caps = bcm2835_dma_device_slave_caps;
 	od->ddev.device_prep_dma_cyclic = bcm2835_dma_prep_dma_cyclic;
-	od->ddev.device_control = bcm2835_dma_control;
+	od->ddev.device_config = bcm2835_dma_slave_config;
+	od->ddev.device_terminate_all = bcm2835_dma_terminate_all;
 	od->ddev.dev = &pdev->dev;
 	INIT_LIST_HEAD(&od->ddev.channels);
 	spin_lock_init(&od->lock);