ASoC: SAMSUNG: 24-bit audio playback on Exynos4210

Using 256fs or 512fs will result in distortion of 24-bit audio samples. This is because the lrclk generated is not proper. Using 384 fs generates proper output. Signed-off-by: Giridhar Maruthy <[email protected]> Signed-off-by: Mark Brown <[email protected]>
chewitt · Jul 13, 2011 · b3d7615 · b3d7615
1 parent f05bdb8
commit b3d7615
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/sound/soc/samsung/smdk_wm8994.c b/sound/soc/samsung/smdk_wm8994.c
@@ -8,6 +8,7 @@
  */
 
 #include "../codecs/wm8994.h"
+#include <sound/pcm_params.h>
 
  /*
   * Default CFG switch settings to use this driver:
@@ -44,7 +45,9 @@ static int smdk_hw_params(struct snd_pcm_substream *substream,
 	int ret;
 
 	/* AIF1CLK should be >=3MHz for optimal performance */
-	if (params_rate(params) == 8000 || params_rate(params) == 11025)
+	if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE)
+		pll_out = params_rate(params) * 384;
+	else if (params_rate(params) == 8000 || params_rate(params) == 11025)
 		pll_out = params_rate(params) * 512;
 	else
 		pll_out = params_rate(params) * 256;