ASoC: fsi: Add fsi_dma_soft_push/pop function

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 07a0350..363b37a 100644 (file)
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -348,11 +348,59 @@ static int fsi_get_fifo_residue(struct fsi_priv *fsi, int is_play)
        return residue;
 }
 
+/*
+ *             dma function
+ */
+
 static u8 *fsi_dma_get_area(struct fsi_priv *fsi)
 {
        return fsi->substream->runtime->dma_area + fsi->byte_offset;
 }
 
+static void fsi_dma_soft_push16(struct fsi_priv *fsi, int size)
+{
+       u16 *start;
+       int i;
+
+       start  = (u16 *)fsi_dma_get_area(fsi);
+
+       for (i = 0; i < size; i++)
+               fsi_reg_write(fsi, DODT, ((u32)*(start + i) << 8));
+}
+
+static void fsi_dma_soft_pop16(struct fsi_priv *fsi, int size)
+{
+       u16 *start;
+       int i;
+
+       start  = (u16 *)fsi_dma_get_area(fsi);
+
+       for (i = 0; i < size; i++)
+               *(start + i) = (u16)(fsi_reg_read(fsi, DIDT) >> 8);
+}
+
+static void fsi_dma_soft_push32(struct fsi_priv *fsi, int size)
+{
+       u32 *start;
+       int i;
+
+       start  = (u32 *)fsi_dma_get_area(fsi);
+
+       for (i = 0; i < size; i++)
+               fsi_reg_write(fsi, DODT, *(start + i));
+}
+
+static void fsi_dma_soft_pop32(struct fsi_priv *fsi, int size)
+{
+       u32 *start;
+       int i;
+
+       start  = (u32 *)fsi_dma_get_area(fsi);
+
+       for (i = 0; i < size; i++)
+               *(start + i) = fsi_reg_read(fsi, DIDT);
+}
+
 /*
  *             irq function
  */
@@ -500,8 +548,7 @@ static int fsi_data_push(struct fsi_priv *fsi, int startup)
        int send;
        int fifo_free;
        int width;
-       u8 *start;
-       int i, over_period;
+       int over_period;
 
        if (!fsi                        ||
            !fsi->substream             ||
@@ -538,17 +585,12 @@ static int fsi_data_push(struct fsi_priv *fsi, int startup)
        if (fifo_free < send)
                send = fifo_free;
 
-       start = fsi_dma_get_area(fsi);
-
        switch (width) {
        case 2:
-               for (i = 0; i < send; i++)
-                       fsi_reg_write(fsi, DODT,
-                                     ((u32)*((u16 *)start + i) << 8));
+               fsi_dma_soft_push16(fsi, send);
                break;
        case 4:
-               for (i = 0; i < send; i++)
-                       fsi_reg_write(fsi, DODT, *((u32 *)start + i));
+               fsi_dma_soft_push32(fsi, send);
                break;
        default:
                return -EINVAL;
@@ -583,8 +625,7 @@ static int fsi_data_pop(struct fsi_priv *fsi, int startup)
        int free;
        int fifo_fill;
        int width;
-       u8 *start;
-       int i, over_period;
+       int over_period;
 
        if (!fsi                        ||
            !fsi->substream             ||
@@ -620,17 +661,12 @@ static int fsi_data_pop(struct fsi_priv *fsi, int startup)
        if (free < fifo_fill)
                fifo_fill = free;
 
-       start = fsi_dma_get_area(fsi);
-
        switch (width) {
        case 2:
-               for (i = 0; i < fifo_fill; i++)
-                       *((u16 *)start + i) =
-                               (u16)(fsi_reg_read(fsi, DIDT) >> 8);
+               fsi_dma_soft_pop16(fsi, fifo_fill);
                break;
        case 4:
-               for (i = 0; i < fifo_fill; i++)
-                       *((u32 *)start + i) = fsi_reg_read(fsi, DIDT);
+               fsi_dma_soft_pop32(fsi, fifo_fill);
                break;
        default:
                return -EINVAL;