X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=sound%2Fsoc%2Fomap%2Fomap3pandora.c;h=796484d6e4f4cb7e5a7101f27e07e6e2aed7ac60;hp=7605c37c91e79f085c81d952d0fc9d09f91fdf0d;hb=6b647d6ae1e9f1c6448d455f7a42d0857365d500;hpb=cdaeb578aca9e017deb0f55f1af8a94a4d63efb3

diff --git a/sound/soc/omap/omap3pandora.c b/sound/soc/omap/omap3pandora.c
index 7605c37c91e7..796484d6e4f4 100644
--- a/sound/soc/omap/omap3pandora.c
+++ b/sound/soc/omap/omap3pandora.c
@@ -29,6 +29,7 @@
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/soc.h>
+#include <sound/pcm_params.h>
 
 #include <asm/mach-types.h>
 #include <plat/mcbsp.h>
@@ -49,6 +50,7 @@ static int omap3pandora_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	int divider;
 	int ret;
 
 	/* Set the codec system clock for DAC and ADC */
@@ -68,9 +70,30 @@ static int omap3pandora_hw_params(struct snd_pcm_substream *substream,
 		return ret;
 	}
 
-	ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
+	divider = 8;
+	if (snd_pcm_format_physical_width(params_format(params)) > 16)
+		divider = 4;
+
+	ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, divider);
+	if (ret < 0) {
+		pr_err(PREFIX "can't set SRG clock divider to %d\n", divider);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int omap3pandora_hw_free(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	int ret;
+
+	/* Set McBSP clock back to internal for power saving to work */
+	ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_FCLK,
+				     0, SND_SOC_CLOCK_IN);
 	if (ret < 0) {
-		pr_err(PREFIX "can't set SRG clock divider\n");
+		pr_err(PREFIX "can't set cpu system clock\n");
 		return ret;
 	}
 
@@ -201,6 +224,7 @@ static int omap3pandora_in_init(struct snd_soc_pcm_runtime *rtd)
 
 static struct snd_soc_ops omap3pandora_ops = {
 	.hw_params = omap3pandora_hw_params,
+	.hw_free = omap3pandora_hw_free,
 };
 
 /* Digital audio interface glue - connects codec <--> CPU */