[ARM] 4780/1: S3C2412: Allow for seperate DMA channels for TX and RX

[firefly-linux-kernel-4.4.55.git] / arch / arm / plat-s3c24xx / dma.c

diff --git a/arch/arm/plat-s3c24xx/dma.c b/arch/arm/plat-s3c24xx/dma.c
index aae1b9cbaf44b77a0e9f4ea7e9f37c04cd1a1191..10ef3995b11483198025229a13b63e41b999f4db 100644 (file)
--- a/arch/arm/plat-s3c24xx/dma.c
+++ b/arch/arm/plat-s3c24xx/dma.c
@@ -1184,7 +1184,7 @@ int s3c2410_dma_devconfig(int channel,
                dma_wrreg(chan, S3C2410_DMA_DIDSTC, (0<<1) | (0<<0));
 
                chan->addr_reg = dma_regaddr(chan, S3C2410_DMA_DIDST);
-               return 0;
+               break;
 
        case S3C2410_DMASRC_MEM:
                /* source is memory */
@@ -1195,11 +1195,19 @@ int s3c2410_dma_devconfig(int channel,
                dma_wrreg(chan, S3C2410_DMA_DIDSTC, hwcfg & 3);
 
                chan->addr_reg = dma_regaddr(chan, S3C2410_DMA_DISRC);
-               return 0;
+               break;
+
+       default:
+               printk(KERN_ERR "dma%d: invalid source type (%d)\n",
+                      channel, source);
+
+               return -EINVAL;
        }
 
-       printk(KERN_ERR "dma%d: invalid source type (%d)\n", channel, source);
-       return -EINVAL;
+       if (dma_sel.direction != NULL)
+               (dma_sel.direction)(chan, chan->map, source);
+
+       return 0;
 }
 
 EXPORT_SYMBOL(s3c2410_dma_devconfig);