ASoC: msm8998: add mixer controls for MI2S bit format

MI2S ports supports multiple bit formats for Rx and Tx paths.
Add new mixer controls for supporting bit format for Rx and
Tx paths of all 4 MI2S ports in MSM8998 target. The bit format
for the MI2S ports will be used to setup Backend DAI configuration
through fixup function.

Change-Id: I1b9d154c900c9f9cf12ae7b279dc41b61af15faa
Signed-off-by: Banajit Goswami <bgoswami@codeaurora.org>

1 files changed, 155 insertions, 0 deletions

diff --git a/sound/soc/msm/msm8998.c b/sound/soc/msm/msm8998.c
index 041a91e28988..d2c99bcc4626 100644
--- a/sound/soc/msm/msm8998.c
+++ b/sound/soc/msm/msm8998.c
@@ -496,6 +496,8 @@ static SOC_ENUM_SINGLE_EXT_DECL(tert_mi2s_rx_chs, mi2s_ch_text);
 static SOC_ENUM_SINGLE_EXT_DECL(tert_mi2s_tx_chs, mi2s_ch_text);
 static SOC_ENUM_SINGLE_EXT_DECL(quat_mi2s_rx_chs, mi2s_ch_text);
 static SOC_ENUM_SINGLE_EXT_DECL(quat_mi2s_tx_chs, mi2s_ch_text);
+static SOC_ENUM_SINGLE_EXT_DECL(mi2s_rx_format, bit_format_text);
+static SOC_ENUM_SINGLE_EXT_DECL(mi2s_tx_format, bit_format_text);
 static SOC_ENUM_SINGLE_EXT_DECL(hifi_function, hifi_text);
 
 static struct platform_device *spdev;
@@ -2263,6 +2265,54 @@ static int mi2s_get_sample_rate(int value)
 	return sample_rate;
 }
 
+static int mi2s_get_format(int value)
+{
+	int format;
+
+	switch (value) {
+	case 0:
+		format = SNDRV_PCM_FORMAT_S16_LE;
+		break;
+	case 1:
+		format = SNDRV_PCM_FORMAT_S24_LE;
+		break;
+	case 2:
+		format = SNDRV_PCM_FORMAT_S24_3LE;
+		break;
+	case 3:
+		format = SNDRV_PCM_FORMAT_S32_LE;
+		break;
+	default:
+		format = SNDRV_PCM_FORMAT_S16_LE;
+		break;
+	}
+	return format;
+}
+
+static int mi2s_get_format_value(int format)
+{
+	int value;
+
+	switch (format) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		value = 0;
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		value = 1;
+		break;
+	case SNDRV_PCM_FORMAT_S24_3LE:
+		value = 2;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		value = 3;
+		break;
+	default:
+		value = 0;
+		break;
+	}
+	return value;
+}
+
 static int mi2s_rx_sample_rate_put(struct snd_kcontrol *kcontrol,
 				   struct snd_ctl_elem_value *ucontrol)
 {
@@ -2395,6 +2445,78 @@ static int msm_mi2s_tx_ch_put(struct snd_kcontrol *kcontrol,
 	return 1;
 }
 
+static int msm_mi2s_rx_format_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	int idx = mi2s_get_port_idx(kcontrol);
+
+	if (idx < 0)
+		return idx;
+
+	ucontrol->value.enumerated.item[0] =
+		mi2s_get_format_value(mi2s_rx_cfg[idx].bit_format);
+
+	pr_debug("%s: idx[%d]_rx_format = %d, item = %d\n", __func__,
+		idx, mi2s_rx_cfg[idx].bit_format,
+		ucontrol->value.enumerated.item[0]);
+
+	return 0;
+}
+
+static int msm_mi2s_rx_format_put(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	int idx = mi2s_get_port_idx(kcontrol);
+
+	if (idx < 0)
+		return idx;
+
+	mi2s_rx_cfg[idx].bit_format =
+		mi2s_get_format(ucontrol->value.enumerated.item[0]);
+
+	pr_debug("%s: idx[%d]_rx_format = %d, item = %d\n", __func__,
+		  idx, mi2s_rx_cfg[idx].bit_format,
+		  ucontrol->value.enumerated.item[0]);
+
+	return 0;
+}
+
+static int msm_mi2s_tx_format_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	int idx = mi2s_get_port_idx(kcontrol);
+
+	if (idx < 0)
+		return idx;
+
+	ucontrol->value.enumerated.item[0] =
+		mi2s_get_format_value(mi2s_tx_cfg[idx].bit_format);
+
+	pr_debug("%s: idx[%d]_tx_format = %d, item = %d\n", __func__,
+		idx, mi2s_tx_cfg[idx].bit_format,
+		ucontrol->value.enumerated.item[0]);
+
+	return 0;
+}
+
+static int msm_mi2s_tx_format_put(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	int idx = mi2s_get_port_idx(kcontrol);
+
+	if (idx < 0)
+		return idx;
+
+	mi2s_tx_cfg[idx].bit_format =
+		mi2s_get_format(ucontrol->value.enumerated.item[0]);
+
+	pr_debug("%s: idx[%d]_tx_format = %d, item = %d\n", __func__,
+		  idx, mi2s_tx_cfg[idx].bit_format,
+		  ucontrol->value.enumerated.item[0]);
+
+	return 0;
+}
+
 static int msm_hifi_ctrl(struct snd_soc_codec *codec)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
@@ -2647,6 +2769,22 @@ static const struct snd_kcontrol_new msm_snd_controls[] = {
 			msm_mi2s_rx_ch_get, msm_mi2s_rx_ch_put),
 	SOC_ENUM_EXT("QUAT_MI2S_TX Channels", quat_mi2s_tx_chs,
 			msm_mi2s_tx_ch_get, msm_mi2s_tx_ch_put),
+	SOC_ENUM_EXT("PRIM_MI2S_RX Format", mi2s_rx_format,
+			msm_mi2s_rx_format_get, msm_mi2s_rx_format_put),
+	SOC_ENUM_EXT("PRIM_MI2S_TX Format", mi2s_tx_format,
+			msm_mi2s_tx_format_get, msm_mi2s_tx_format_put),
+	SOC_ENUM_EXT("SEC_MI2S_RX Format", mi2s_rx_format,
+			msm_mi2s_rx_format_get, msm_mi2s_rx_format_put),
+	SOC_ENUM_EXT("SEC_MI2S_TX Format", mi2s_tx_format,
+			msm_mi2s_tx_format_get, msm_mi2s_tx_format_put),
+	SOC_ENUM_EXT("TERT_MI2S_RX Format", mi2s_rx_format,
+			msm_mi2s_rx_format_get, msm_mi2s_rx_format_put),
+	SOC_ENUM_EXT("TERT_MI2S_TX Format", mi2s_tx_format,
+			msm_mi2s_tx_format_get, msm_mi2s_tx_format_put),
+	SOC_ENUM_EXT("QUAT_MI2S_RX Format", mi2s_rx_format,
+			msm_mi2s_rx_format_get, msm_mi2s_rx_format_put),
+	SOC_ENUM_EXT("QUAT_MI2S_TX Format", mi2s_tx_format,
+			msm_mi2s_tx_format_get, msm_mi2s_tx_format_put),
 	SOC_ENUM_EXT("HiFi Function", hifi_function, msm_hifi_get,
 			msm_hifi_put),
 };
@@ -3111,48 +3249,64 @@ static int msm_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 		break;
 
 	case MSM_BACKEND_DAI_PRI_MI2S_RX:
+		param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
+			mi2s_rx_cfg[PRIM_MI2S].bit_format);
 		rate->min = rate->max = mi2s_rx_cfg[PRIM_MI2S].sample_rate;
 		channels->min = channels->max =
 			mi2s_rx_cfg[PRIM_MI2S].channels;
 		break;
 
 	case MSM_BACKEND_DAI_PRI_MI2S_TX:
+		param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
+			mi2s_tx_cfg[PRIM_MI2S].bit_format);
 		rate->min = rate->max = mi2s_tx_cfg[PRIM_MI2S].sample_rate;
 		channels->min = channels->max =
 			mi2s_tx_cfg[PRIM_MI2S].channels;
 		break;
 
 	case MSM_BACKEND_DAI_SECONDARY_MI2S_RX:
+		param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
+			mi2s_rx_cfg[SEC_MI2S].bit_format);
 		rate->min = rate->max = mi2s_rx_cfg[SEC_MI2S].sample_rate;
 		channels->min = channels->max =
 			mi2s_rx_cfg[SEC_MI2S].channels;
 		break;
 
 	case MSM_BACKEND_DAI_SECONDARY_MI2S_TX:
+		param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
+			mi2s_tx_cfg[SEC_MI2S].bit_format);
 		rate->min = rate->max = mi2s_tx_cfg[SEC_MI2S].sample_rate;
 		channels->min = channels->max =
 			mi2s_tx_cfg[SEC_MI2S].channels;
 		break;
 
 	case MSM_BACKEND_DAI_TERTIARY_MI2S_RX:
+		param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
+			mi2s_rx_cfg[TERT_MI2S].bit_format);
 		rate->min = rate->max = mi2s_rx_cfg[TERT_MI2S].sample_rate;
 		channels->min = channels->max =
 			mi2s_rx_cfg[TERT_MI2S].channels;
 		break;
 
 	case MSM_BACKEND_DAI_TERTIARY_MI2S_TX:
+		param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
+			mi2s_tx_cfg[TERT_MI2S].bit_format);
 		rate->min = rate->max = mi2s_tx_cfg[TERT_MI2S].sample_rate;
 		channels->min = channels->max =
 			mi2s_tx_cfg[TERT_MI2S].channels;
 		break;
 
 	case MSM_BACKEND_DAI_QUATERNARY_MI2S_RX:
+		param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
+			mi2s_rx_cfg[QUAT_MI2S].bit_format);
 		rate->min = rate->max = mi2s_rx_cfg[QUAT_MI2S].sample_rate;
 		channels->min = channels->max =
 			mi2s_rx_cfg[QUAT_MI2S].channels;
 		break;
 
 	case MSM_BACKEND_DAI_QUATERNARY_MI2S_TX:
+		param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
+			mi2s_tx_cfg[QUAT_MI2S].bit_format);
 		rate->min = rate->max = mi2s_tx_cfg[QUAT_MI2S].sample_rate;
 		channels->min = channels->max =
 			mi2s_tx_cfg[QUAT_MI2S].channels;
@@ -3972,6 +4126,7 @@ static u32 get_mi2s_bits_per_sample(u32 bit_format)
 	u32 bit_per_sample;
 
 	switch (bit_format) {
+	case SNDRV_PCM_FORMAT_S32_LE:
 	case SNDRV_PCM_FORMAT_S24_3LE:
 	case SNDRV_PCM_FORMAT_S24_LE:
 		bit_per_sample = 32;