ASoC: msm: add mbhc support for wcd934x

Add wcd934x mbhc support in machine driver, so that headset
accessories can be detected properly.

Change-Id: I0a1ec6570848b8164cf46f8365b18d4c488f78f6
Signed-off-by: Walter Yang <yandongy@codeaurora.org>

sound/soc/msm/msmcobalt.c

@@ -36,6 +36,7 @@
 #include "qdsp6v2/msm-pcm-routing-v2.h"
 #include "../codecs/wcd9335.h"
 #include "../codecs/wcd934x/wcd934x.h"
+#include "../codecs/wcd934x/wcd934x-mbhc.h"
 #include "../codecs/wsa881x.h"
 
 #define DRV_NAME "msmcobalt-asoc-snd"
@@ -222,6 +223,7 @@ static struct msm_asoc_wcd93xx_codec msm_codec_fn;
 static void *adsp_state_notifier;
 
 static void *def_tasha_mbhc_cal(void);
+static void *def_tavil_mbhc_cal(void);
 static int msm_snd_enable_codec_ext_clk(struct snd_soc_codec *codec,
 					int enable, bool dapm);
 static int msm_wsa881x_init(struct snd_soc_component *component);
@@ -1815,6 +1817,40 @@ static void *def_tasha_mbhc_cal(void)
 	return tasha_wcd_cal;
 }
 
+static void *def_tavil_mbhc_cal(void)
+{
+	void *tavil_wcd_cal;
+	struct wcd_mbhc_btn_detect_cfg *btn_cfg;
+	u16 *btn_high;
+
+	tavil_wcd_cal = kzalloc(WCD_MBHC_CAL_SIZE(WCD_MBHC_DEF_BUTTONS,
+				WCD9XXX_MBHC_DEF_RLOADS), GFP_KERNEL);
+	if (!tavil_wcd_cal)
+		return NULL;
+
+#define S(X, Y) ((WCD_MBHC_CAL_PLUG_TYPE_PTR(tavil_wcd_cal)->X) = (Y))
+	S(v_hs_max, 1600);
+#undef S
+#define S(X, Y) ((WCD_MBHC_CAL_BTN_DET_PTR(tavil_wcd_cal)->X) = (Y))
+	S(num_btn, WCD_MBHC_DEF_BUTTONS);
+#undef S
+
+	btn_cfg = WCD_MBHC_CAL_BTN_DET_PTR(tavil_wcd_cal);
+	btn_high = ((void *)&btn_cfg->_v_btn_low) +
+		(sizeof(btn_cfg->_v_btn_low[0]) * btn_cfg->num_btn);
+
+	btn_high[0] = 75;
+	btn_high[1] = 150;
+	btn_high[2] = 237;
+	btn_high[3] = 500;
+	btn_high[4] = 500;
+	btn_high[5] = 500;
+	btn_high[6] = 500;
+	btn_high[7] = 500;
+
+	return tavil_wcd_cal;
+}
+
 static int msm_snd_hw_params(struct snd_pcm_substream *substream,
 			     struct snd_pcm_hw_params *params)
 {
@@ -3270,6 +3306,43 @@ err_pcm_runtime:
 	return ret;
 }
 
+static int msm_snd_card_tavil_late_probe(struct snd_soc_card *card)
+{
+	const char *be_dl_name = LPASS_BE_SLIMBUS_0_RX;
+	struct snd_soc_pcm_runtime *rtd;
+	int ret = 0;
+	void *mbhc_calibration;
+
+	rtd = snd_soc_get_pcm_runtime(card, be_dl_name);
+	if (!rtd) {
+		dev_err(card->dev,
+			"%s: snd_soc_get_pcm_runtime for %s failed!\n",
+			__func__, be_dl_name);
+		ret = -EINVAL;
+		goto err_pcm_runtime;
+	}
+
+	mbhc_calibration = def_tavil_mbhc_cal();
+	if (!mbhc_calibration) {
+		ret = -ENOMEM;
+		goto err_mbhc_cal;
+	}
+	wcd_mbhc_cfg.calibration = mbhc_calibration;
+	ret = tavil_mbhc_hs_detect(rtd->codec, &wcd_mbhc_cfg);
+	if (ret) {
+		dev_err(card->dev, "%s: mbhc hs detect failed, err:%d\n",
+			__func__, ret);
+		goto err_hs_detect;
+	}
+	return 0;
+
+err_hs_detect:
+	kfree(mbhc_calibration);
+err_mbhc_cal:
+err_pcm_runtime:
+	return ret;
+}
+
 struct snd_soc_card snd_soc_card_tasha_msm = {
 	.name		= "msmcobalt-tasha-snd-card",
 	.late_probe	= msm_snd_card_late_probe,
@@ -3277,6 +3350,7 @@ struct snd_soc_card snd_soc_card_tasha_msm = {
 
 struct snd_soc_card snd_soc_card_tavil_msm = {
 	.name		= "msmcobalt-tavil-snd-card",
+	.late_probe	= msm_snd_card_tavil_late_probe,
 };
 
 static int msm_populate_dai_link_component_of_node(