ASoC: sdp4430: Set McBSP format for voice call

MODEM frontend can be used with different backends
like McPDM or DMIC. McBSP2 needs to be configured
for modem voice call regardless of selected backend.

Change-Id: I6eaf1da312b4cb513a39fea5d5ed4dc7249865de
Signed-off-by: Francois Mazard <f-mazard@ti.com>
Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Margarita Olaya Cabrera <magi.olaya@ti.com>

1 files changed, 83 insertions, 2 deletions

diff --git a/sound/soc/omap/sdp4430.c b/sound/soc/omap/sdp4430.c
index a5f99889e7c..a385e79799e 100644
--- a/sound/soc/omap/sdp4430.c
+++ b/sound/soc/omap/sdp4430.c
@@ -43,6 +43,7 @@
 #endif
 
 static int twl6040_power_mode;
+static int mcbsp_cfg;
 
 static struct i2c_client *tps6130x_client;
 static struct i2c_board_info tps6130x_hwmon_info = {
@@ -66,13 +67,54 @@ static int sdp4430_tps6130x_configure(void)
 	return 0;
 }
 
+static int sdp4430_modem_mcbsp_configure(struct snd_pcm_substream *substream,
+					 int flag)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_pcm_substream *modem_substream;
+	struct snd_soc_pcm_runtime *modem_rtd;
+	int ret = 0;
+
+	/* already configured, nothing to do */
+	if (mcbsp_cfg == flag)
+		return ret;
+
+	if (flag) {
+		modem_substream = snd_soc_get_dai_substream(rtd->card,
+					OMAP_ABE_BE_MM_EXT1,
+					substream->stream);
+		if (unlikely(modem_substream == NULL)) {
+			ret = -ENODEV;
+			goto exit;
+		}
+
+		modem_rtd = modem_substream->private_data;
+
+		/* Set cpu DAI configuration */
+		ret = snd_soc_dai_set_fmt(modem_rtd->cpu_dai,
+					  SND_SOC_DAIFMT_I2S |
+					  SND_SOC_DAIFMT_NB_NF |
+					  SND_SOC_DAIFMT_CBM_CFM);
+		if (unlikely(ret < 0)) {
+			printk(KERN_ERR "can't set Modem cpu DAI configuration\n");
+			goto exit;
+		}
+		mcbsp_cfg = 1;
+	} else {
+		mcbsp_cfg = 0;
+	}
+
+exit:
+	return ret;
+}
+
 static int sdp4430_mcpdm_hw_params(struct snd_pcm_substream *substream,
 	struct snd_pcm_hw_params *params)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 	int clk_id, freq;
-	int ret;
+	int ret = 0;
 
 	if (twl6040_power_mode) {
 		clk_id = TWL6040_SYSCLK_SEL_HPPLL;
@@ -89,11 +131,31 @@ static int sdp4430_mcpdm_hw_params(struct snd_pcm_substream *substream,
 		printk(KERN_ERR "can't set codec system clock\n");
 		return ret;
 	}
+
+	if (rtd->current_fe == ABE_FRONTEND_DAI_MODEM) {
+		/* set Modem McBSP configuration  */
+		ret = sdp4430_modem_mcbsp_configure(substream, 1);
+	}
+
+	return ret;
+}
+
+static int sdp4430_mcpdm_hw_free(struct snd_pcm_substream *substream)
+{
+	int ret = 0;
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+
+	if (rtd->current_fe == ABE_FRONTEND_DAI_MODEM) {
+		/* freed Modem McBSP configuration */
+		ret = sdp4430_modem_mcbsp_configure(substream, 0);
+	}
+
 	return ret;
 }
 
 static struct snd_soc_ops sdp4430_mcpdm_ops = {
 	.hw_params = sdp4430_mcpdm_hw_params,
+	.hw_free = sdp4430_mcpdm_hw_free,
 };
 
 static int sdp4430_mcbsp_hw_params(struct snd_pcm_substream *substream,
@@ -163,11 +225,30 @@ static int sdp4430_dmic_hw_params(struct snd_pcm_substream *substream,
 		return ret;
 	}
 
-	return 0;
+	if (rtd->current_fe == ABE_FRONTEND_DAI_MODEM) {
+		/* set Modem McBSP configuration  */
+		ret = sdp4430_modem_mcbsp_configure(substream, 1);
+	}
+
+	return ret;
+}
+
+static int sdp4430_dmic_hw_free(struct snd_pcm_substream *substream)
+{
+	int ret = 0;
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+
+	if (rtd->current_fe == ABE_FRONTEND_DAI_MODEM) {
+		/* freed Modem McBSP configuration */
+		ret = sdp4430_modem_mcbsp_configure(substream, 0);
+	}
+
+	return ret;
 }
 
 static struct snd_soc_ops sdp4430_dmic_ops = {
 	.hw_params = sdp4430_dmic_hw_params,
+	.hw_free = sdp4430_dmic_hw_free,
 };
 
 /* Headset jack */