ASoC: mdm9615: Add DTMF FE to the machine driver

Add support to generate DTMF using DSP's audio front-end (AFE).
Add DTMF FE to the machine driver to enable DTMF generation.

Change-Id: Ied11b4aab1e1f9b5ac54b591ef50a8c69f913ea6
Signed-off-by: Shiv Maliyappanahalli <smaliyap@codeaurora.org>
diff --git a/sound/soc/msm/mdm9615.c b/sound/soc/msm/mdm9615.c
index 5a47efe..0125c1a 100644
--- a/sound/soc/msm/mdm9615.c
+++ b/sound/soc/msm/mdm9615.c
@@ -2014,6 +2014,21 @@
 		.no_host_mode = SND_SOC_DAI_LINK_NO_HOST,
 		.ignore_suspend = 1,
 	},
+	{
+		.name = "DTMF RX Hostless",
+		.stream_name = "DTMF RX Hostless",
+		.cpu_dai_name	= "DTMF_RX_HOSTLESS",
+		.platform_name  = "msm-pcm-dtmf",
+		.dynamic = 1,
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.codec_name = "snd-soc-dummy",
+		.trigger = {SND_SOC_DPCM_TRIGGER_POST,
+			    SND_SOC_DPCM_TRIGGER_POST},
+		.ignore_suspend = 1,
+		.be_id = MSM_FRONTEND_DAI_DTMF_RX,
+		.no_host_mode = SND_SOC_DAI_LINK_NO_HOST,
+	},
+
 	/* Backend BT DAI Links */
 	{
 		.name = LPASS_BE_INT_BT_SCO_RX,