rcar-hpbdma: add parameter to set_slave() method

Commit 4981c4dc194efb18f0e9a02f1b43e926f2f0d2bb (DMA: shdma: switch DT mode to
use configuration data from a match table) added a new parameter to set_slave()
method but unfortunately got merged later than commit c4f6c41ba790bbbfcebb4c47a
(dma: add driver for R-Car HPB-DMAC), so that the HPB-DMAC driver retained the
old prototype which caused this warning:

drivers/dma/sh/rcar-hpbdma.c:485: warning: initialization from incompatible
pointer type

The newly added parameter  is used to override DMA slave address from 'struct
hpb_dmae_slave_config', so we have to add the 'slave_addr' field to 'struct
hpb_dmae_chan', conditionally assign it in set_slave() method, and return in
slave_addr() method.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/sh/rcar-hpbdma.c b/drivers/dma/sh/rcar-hpbdma.c
index b2f50d8..ebad845 100644 (file)
--- a/drivers/dma/sh/rcar-hpbdma.c
+++ b/drivers/dma/sh/rcar-hpbdma.c
@@ -93,6 +93,7 @@ struct hpb_dmae_chan {
        void __iomem *base;
        const struct hpb_dmae_slave_config *cfg;
        char dev_id[16];                /* unique name per DMAC of channel */
+       dma_addr_t slave_addr;
 };
 
 struct hpb_dmae_device {
@@ -445,7 +446,8 @@ hpb_dmae_alloc_chan_resources(struct hpb_dmae_chan *hpb_chan,
        return 0;
 }
 
-static int hpb_dmae_set_slave(struct shdma_chan *schan, int slave_id, bool try)
+static int hpb_dmae_set_slave(struct shdma_chan *schan, int slave_id,
+                             dma_addr_t slave_addr, bool try)
 {
        struct hpb_dmae_chan *chan = to_chan(schan);
        const struct hpb_dmae_slave_config *sc =
@@ -456,6 +458,7 @@ static int hpb_dmae_set_slave(struct shdma_chan *schan, int slave_id, bool try)
        if (try)
                return 0;
        chan->cfg = sc;
+       chan->slave_addr = slave_addr ? : sc->addr;
        return hpb_dmae_alloc_chan_resources(chan, sc);
 }
 
@@ -467,7 +470,7 @@ static dma_addr_t hpb_dmae_slave_addr(struct shdma_chan *schan)
 {
        struct hpb_dmae_chan *chan = to_chan(schan);
 
-       return chan->cfg->addr;
+       return chan->slave_addr;
 }
 
 static struct shdma_desc *hpb_dmae_embedded_desc(void *buf, int i)