ASoC: dwc: Reorder code in preparation for DT support

Move code that configures the DAI and DMA into a separate function.  This
reduces the size of the dw_i2s_probe function and will make it easier to
add support for device tree to the driver.

Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 39 insertions, 34 deletions

diff --git a/sound/soc/dwc/designware_i2s.c b/sound/soc/dwc/designware_i2s.c
index f81e747c1c12..23a7c13b914f 100644
--- a/sound/soc/dwc/designware_i2s.c
+++ b/sound/soc/dwc/designware_i2s.c
@@ -324,13 +324,47 @@ static int dw_i2s_resume(struct snd_soc_dai *dai)
 #define dw_i2s_resume   NULL
 #endif
 
+static void dw_configure_dai_by_pd(struct dw_i2s_dev *dev,
+                                   struct snd_soc_dai_driver *dw_i2s_dai,
+                                   struct resource *res,
+                                   const struct i2s_platform_data *pdata)
+{
+        /* Set DMA slaves info */
+
+        dev->play_dma_data.data = pdata->play_dma_data;
+        dev->capture_dma_data.data = pdata->capture_dma_data;
+        dev->play_dma_data.addr = res->start + I2S_TXDMA;
+        dev->capture_dma_data.addr = res->start + I2S_RXDMA;
+        dev->play_dma_data.max_burst = 16;
+        dev->capture_dma_data.max_burst = 16;
+        dev->play_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+        dev->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+        dev->play_dma_data.filter = pdata->filter;
+        dev->capture_dma_data.filter = pdata->filter;
+
+        if (pdata->cap & DWC_I2S_PLAY) {
+                dev_dbg(dev->dev, " designware: play supported\n");
+                dw_i2s_dai->playback.channels_min = MIN_CHANNEL_NUM;
+                dw_i2s_dai->playback.channels_max = pdata->channel;
+                dw_i2s_dai->playback.formats = pdata->snd_fmts;
+                dw_i2s_dai->playback.rates = pdata->snd_rates;
+        }
+
+        if (pdata->cap & DWC_I2S_RECORD) {
+                dev_dbg(dev->dev, "designware: record supported\n");
+                dw_i2s_dai->capture.channels_min = MIN_CHANNEL_NUM;
+                dw_i2s_dai->capture.channels_max = pdata->channel;
+                dw_i2s_dai->capture.formats = pdata->snd_fmts;
+                dw_i2s_dai->capture.rates = pdata->snd_rates;
+        }
+}
+
 static int dw_i2s_probe(struct platform_device *pdev)
 {
         const struct i2s_platform_data *pdata = pdev->dev.platform_data;
         struct dw_i2s_dev *dev;
         struct resource *res;
         int ret;
-        unsigned int cap;
         struct snd_soc_dai_driver *dw_i2s_dai;
 
         if (!pdata) {
@@ -357,23 +391,11 @@ static int dw_i2s_probe(struct platform_device *pdev)
         if (IS_ERR(dev->i2s_base))
                 return PTR_ERR(dev->i2s_base);
 
-        cap = pdata->cap;
-        dev->capability = cap;
-        dev->i2s_clk_cfg = pdata->i2s_clk_cfg;
-
-        /* Set DMA slaves info */
-
-        dev->play_dma_data.data = pdata->play_dma_data;
-        dev->capture_dma_data.data = pdata->capture_dma_data;
-        dev->play_dma_data.addr = res->start + I2S_TXDMA;
-        dev->capture_dma_data.addr = res->start + I2S_RXDMA;
-        dev->play_dma_data.max_burst = 16;
-        dev->capture_dma_data.max_burst = 16;
-        dev->play_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
-        dev->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
-        dev->play_dma_data.filter = pdata->filter;
-        dev->capture_dma_data.filter = pdata->filter;
+        dev->dev = &pdev->dev;
+        dw_configure_dai_by_pd(dev, dw_i2s_dai, res, pdata);
 
+        dev->capability = pdata->cap;
+        dev->i2s_clk_cfg = pdata->i2s_clk_cfg;
         dev->clk = clk_get(&pdev->dev, NULL);
         if (IS_ERR(dev->clk))
                 return  PTR_ERR(dev->clk);
@@ -382,23 +404,6 @@ static int dw_i2s_probe(struct platform_device *pdev)
         if (ret < 0)
                 goto err_clk_put;
 
-        if (cap & DWC_I2S_PLAY) {
-                dev_dbg(&pdev->dev, " designware: play supported\n");
-                dw_i2s_dai->playback.channels_min = MIN_CHANNEL_NUM;
-                dw_i2s_dai->playback.channels_max = pdata->channel;
-                dw_i2s_dai->playback.formats = pdata->snd_fmts;
-                dw_i2s_dai->playback.rates = pdata->snd_rates;
-        }
-
-        if (cap & DWC_I2S_RECORD) {
-                dev_dbg(&pdev->dev, "designware: record supported\n");
-                dw_i2s_dai->capture.channels_min = MIN_CHANNEL_NUM;
-                dw_i2s_dai->capture.channels_max = pdata->channel;
-                dw_i2s_dai->capture.formats = pdata->snd_fmts;
-                dw_i2s_dai->capture.rates = pdata->snd_rates;
-        }
-
-        dev->dev = &pdev->dev;
         dev_set_drvdata(&pdev->dev, dev);
         ret = snd_soc_register_component(&pdev->dev, &dw_i2s_component,
                                          dw_i2s_dai, 1);