ASoC: ep93xx: Drop legacy DMA support

And rely on OF DMA.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>
Tested-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

sound/soc/cirrus/ep93xx-i2s.c

@@ -24,7 +24,6 @@
 #include <sound/initval.h>
 #include <sound/soc.h>
 
-#include <linux/platform_data/dma-ep93xx.h>
 #include <linux/soc/cirrus/ep93xx.h>
 
 #include "ep93xx-pcm.h"
@@ -80,19 +79,6 @@ struct ep93xx_i2s_info {
 	struct snd_dmaengine_dai_dma_data dma_params_tx;
 };
 
-static struct ep93xx_dma_data ep93xx_i2s_dma_data[] = {
-	[SNDRV_PCM_STREAM_PLAYBACK] = {
-		.name		= "i2s-pcm-out",
-		.port		= EP93XX_DMA_I2S1,
-		.direction	= DMA_MEM_TO_DEV,
-	},
-	[SNDRV_PCM_STREAM_CAPTURE] = {
-		.name		= "i2s-pcm-in",
-		.port		= EP93XX_DMA_I2S1,
-		.direction	= DMA_DEV_TO_MEM,
-	},
-};
-
 static inline void ep93xx_i2s_write_reg(struct ep93xx_i2s_info *info,
 					unsigned reg, unsigned val)
 {
@@ -198,11 +184,6 @@ static int ep93xx_i2s_dai_probe(struct snd_soc_dai *dai)
 {
 	struct ep93xx_i2s_info *info = snd_soc_dai_get_drvdata(dai);
 
-	info->dma_params_tx.filter_data =
-		&ep93xx_i2s_dma_data[SNDRV_PCM_STREAM_PLAYBACK];
-	info->dma_params_rx.filter_data =
-		&ep93xx_i2s_dma_data[SNDRV_PCM_STREAM_CAPTURE];
-
 	snd_soc_dai_init_dma_data(dai,	&info->dma_params_tx,
 					&info->dma_params_rx);
 

sound/soc/cirrus/ep93xx-pcm.c

@@ -18,8 +18,6 @@
 #include <sound/soc.h>
 #include <sound/dmaengine_pcm.h>
 
-#include <linux/platform_data/dma-ep93xx.h>
-
 #include "ep93xx-pcm.h"
 
 static const struct snd_pcm_hardware ep93xx_pcm_hardware = {
@@ -35,30 +33,15 @@ static const struct snd_pcm_hardware ep93xx_pcm_hardware = {
 	.fifo_size		= 32,
 };
 
-static bool ep93xx_pcm_dma_filter(struct dma_chan *chan, void *filter_param)
-{
-	struct ep93xx_dma_data *data = filter_param;
-
-	if (data->direction == ep93xx_dma_chan_direction(chan)) {
-		chan->private = data;
-		return true;
-	}
-
-	return false;
-}
-
 static const struct snd_dmaengine_pcm_config ep93xx_dmaengine_pcm_config = {
 	.pcm_hardware = &ep93xx_pcm_hardware,
-	.compat_filter_fn = ep93xx_pcm_dma_filter,
 	.prealloc_buffer_size = 131072,
 };
 
 int devm_ep93xx_pcm_platform_register(struct device *dev)
 {
 	return devm_snd_dmaengine_pcm_register(dev,
-		&ep93xx_dmaengine_pcm_config,
-		SND_DMAENGINE_PCM_FLAG_NO_DT |
-		SND_DMAENGINE_PCM_FLAG_COMPAT);
+		&ep93xx_dmaengine_pcm_config, 0);
 }
 EXPORT_SYMBOL_GPL(devm_ep93xx_pcm_platform_register);