ASoC: msm: Add support for USB tunnel audio via ADSP

Add support for USB tunnel audio via ADSP in machine driver of msm8996.

Change-Id: I85ca1677b6d220a8eb54a641e49cb996dcd80877
Signed-off-by: Satya Krishna Pindiproli <satyak@codeaurora.org>

1 files changed, 426 insertions, 3 deletions

diff --git a/sound/soc/msm/msm8996.c b/sound/soc/msm/msm8996.c
index 010dfa3322a0..4bfce6cd3968 100644
--- a/sound/soc/msm/msm8996.c
+++ b/sound/soc/msm/msm8996.c
@@ -41,12 +41,16 @@
 #define DRV_NAME "msm8996-asoc-snd"
 
 #define SAMPLING_RATE_8KHZ      8000
+#define SAMPLING_RATE_11P025KHZ 11025
 #define SAMPLING_RATE_16KHZ     16000
+#define SAMPLING_RATE_22P05KHZ  22050
 #define SAMPLING_RATE_32KHZ     32000
+#define SAMPLING_RATE_44P1KHZ   44100
 #define SAMPLING_RATE_48KHZ     48000
+#define SAMPLING_RATE_88P2KHZ   88200
 #define SAMPLING_RATE_96KHZ     96000
+#define SAMPLING_RATE_176P4KHZ  176400
 #define SAMPLING_RATE_192KHZ    192000
-#define SAMPLING_RATE_44P1KHZ   44100
 
 #define MSM8996_SPK_ON     1
 #define MSM8996_HIFI_ON    1
@@ -104,6 +108,7 @@ static const char *const vi_feed_ch_text[] = {"One", "Two"};
 static char const *hdmi_rx_ch_text[] = {"Two", "Three", "Four", "Five",
 					"Six", "Seven", "Eight"};
 static char const *rx_bit_format_text[] = {"S16_LE", "S24_LE", "S24_3LE"};
+static char const *usb_bit_format_text[] = {"S16_LE", "S24_LE", "S24_3LE"};
 static char const *slim5_rx_bit_format_text[] = {"S16_LE", "S24_LE", "S24_3LE"};
 static char const *slim6_rx_bit_format_text[] = {"S16_LE", "S24_LE", "S24_3LE"};
 static char const *slim0_rx_sample_rate_text[] = {"KHZ_48", "KHZ_96",
@@ -119,11 +124,43 @@ static const char *const proxy_rx_ch_text[] = {"One", "Two", "Three", "Four",
 static char const *hdmi_rx_sample_rate_text[] = {"KHZ_48", "KHZ_96",
 					"KHZ_192"};
 
+static const char *const usb_ch_text[] = {"One", "Two", "Three", "Four",
+					"Five", "Six", "Seven", "Eight"};
+static char const *usb_sample_rate_text[] = {"KHZ_8", "KHZ_11P025",
+					"KHZ_16", "KHZ_22P05", "KHZ_32",
+					"KHZ_44P1", "KHZ_48", "KHZ_88P2",
+					"KHZ_96", "KHZ_176P4", "KHZ_192"};
+
+static SOC_ENUM_SINGLE_EXT_DECL(usb_rx_chs, usb_ch_text);
+static SOC_ENUM_SINGLE_EXT_DECL(usb_tx_chs, usb_ch_text);
+static SOC_ENUM_SINGLE_EXT_DECL(usb_rx_format, usb_bit_format_text);
+static SOC_ENUM_SINGLE_EXT_DECL(usb_tx_format, usb_bit_format_text);
+static SOC_ENUM_SINGLE_EXT_DECL(usb_rx_sample_rate, usb_sample_rate_text);
+static SOC_ENUM_SINGLE_EXT_DECL(usb_tx_sample_rate, usb_sample_rate_text);
+
 static const char *const auxpcm_rate_text[] = {"8000", "16000"};
 static const struct soc_enum msm8996_auxpcm_enum[] = {
 		SOC_ENUM_SINGLE_EXT(2, auxpcm_rate_text),
 };
 
+struct usb_be_config {
+	u32 sample_rate;
+	u32 bit_format;
+	u32 channels;
+};
+
+static struct usb_be_config usb_rx_cfg = {
+	.sample_rate = SAMPLING_RATE_48KHZ,
+	.bit_format = SNDRV_PCM_FORMAT_S16_LE,
+	.channels = 2,
+};
+
+static struct usb_be_config usb_tx_cfg = {
+	.sample_rate = SAMPLING_RATE_48KHZ,
+	.bit_format = SNDRV_PCM_FORMAT_S16_LE,
+	.channels = 2,
+};
+
 static struct afe_clk_set mi2s_tx_clk = {
 	AFE_API_VERSION_I2S_CONFIG,
 	Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
@@ -1256,6 +1293,328 @@ static int hdmi_rx_sample_rate_put(struct snd_kcontrol *kcontrol,
 	return 0;
 }
 
+static int usb_audio_rx_ch_get(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	pr_debug("%s: usb_audio_rx_ch  = %d\n", __func__,
+			usb_rx_cfg.channels);
+	ucontrol->value.integer.value[0] = usb_rx_cfg.channels - 1;
+	return 0;
+}
+
+static int usb_audio_rx_ch_put(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	usb_rx_cfg.channels = ucontrol->value.integer.value[0] + 1;
+
+	pr_debug("%s: usb_audio_rx_ch = %d\n", __func__, usb_rx_cfg.channels);
+	return 1;
+}
+
+static int usb_audio_rx_sample_rate_get(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	int sample_rate_val = 0;
+
+	switch (usb_rx_cfg.sample_rate) {
+	case SAMPLING_RATE_192KHZ:
+		sample_rate_val = 10;
+		break;
+	case SAMPLING_RATE_176P4KHZ:
+		sample_rate_val = 9;
+		break;
+	case SAMPLING_RATE_96KHZ:
+		sample_rate_val = 8;
+		break;
+	case SAMPLING_RATE_88P2KHZ:
+		sample_rate_val = 7;
+		break;
+	case SAMPLING_RATE_48KHZ:
+		sample_rate_val = 6;
+		break;
+	case SAMPLING_RATE_44P1KHZ:
+		sample_rate_val = 5;
+		break;
+	case SAMPLING_RATE_32KHZ:
+		sample_rate_val = 4;
+		break;
+	case SAMPLING_RATE_22P05KHZ:
+		sample_rate_val = 3;
+		break;
+	case SAMPLING_RATE_16KHZ:
+		sample_rate_val = 2;
+		break;
+	case SAMPLING_RATE_11P025KHZ:
+		sample_rate_val = 1;
+		break;
+	case SAMPLING_RATE_8KHZ:
+	default:
+		sample_rate_val = 0;
+		break;
+	}
+
+	ucontrol->value.integer.value[0] = sample_rate_val;
+	pr_debug("%s: usb_audio_rx_sample_rate = %d\n", __func__,
+		 usb_rx_cfg.sample_rate);
+	return 0;
+}
+
+static int usb_audio_rx_sample_rate_put(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	switch (ucontrol->value.integer.value[0]) {
+	case 10:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_192KHZ;
+		break;
+	case 9:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_176P4KHZ;
+		break;
+	case 8:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_96KHZ;
+		break;
+	case 7:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_88P2KHZ;
+		break;
+	case 6:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_48KHZ;
+		break;
+	case 5:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_44P1KHZ;
+		break;
+	case 4:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_32KHZ;
+		break;
+	case 3:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_22P05KHZ;
+		break;
+	case 2:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_16KHZ;
+		break;
+	case 1:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_11P025KHZ;
+		break;
+	case 0:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_8KHZ;
+		break;
+	default:
+		usb_rx_cfg.sample_rate = SAMPLING_RATE_48KHZ;
+		break;
+	}
+
+	pr_debug("%s: control value = %ld, usb_audio_rx_sample_rate = %d\n",
+		__func__, ucontrol->value.integer.value[0],
+		usb_rx_cfg.sample_rate);
+	return 0;
+}
+
+static int usb_audio_rx_format_get(struct snd_kcontrol *kcontrol,
+				   struct snd_ctl_elem_value *ucontrol)
+{
+	switch (usb_rx_cfg.bit_format) {
+	case SNDRV_PCM_FORMAT_S24_3LE:
+		ucontrol->value.integer.value[0] = 2;
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		ucontrol->value.integer.value[0] = 1;
+		break;
+	case SNDRV_PCM_FORMAT_S16_LE:
+	default:
+		ucontrol->value.integer.value[0] = 0;
+		break;
+	}
+
+	pr_debug("%s: usb_audio_rx_format = %d, ucontrol value = %ld\n",
+		 __func__, usb_rx_cfg.bit_format,
+		 ucontrol->value.integer.value[0]);
+	return 0;
+}
+
+static int usb_audio_rx_format_put(struct snd_kcontrol *kcontrol,
+				   struct snd_ctl_elem_value *ucontrol)
+{
+	int rc = 0;
+
+	switch (ucontrol->value.integer.value[0]) {
+	case 2:
+		usb_rx_cfg.bit_format = SNDRV_PCM_FORMAT_S24_3LE;
+		break;
+	case 1:
+		usb_rx_cfg.bit_format = SNDRV_PCM_FORMAT_S24_LE;
+		break;
+	case 0:
+	default:
+		usb_rx_cfg.bit_format = SNDRV_PCM_FORMAT_S16_LE;
+		break;
+	}
+	pr_debug("%s: usb_audio_rx_format = %d, ucontrol value = %ld\n",
+		 __func__, usb_rx_cfg.bit_format,
+		 ucontrol->value.integer.value[0]);
+
+	return rc;
+}
+
+static int usb_audio_tx_ch_get(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	pr_debug("%s: usb_audio_tx_ch  = %d\n", __func__,
+		 usb_tx_cfg.channels);
+	ucontrol->value.integer.value[0] = usb_tx_cfg.channels - 1;
+	return 0;
+}
+
+static int usb_audio_tx_ch_put(struct snd_kcontrol *kcontrol,
+			       struct snd_ctl_elem_value *ucontrol)
+{
+	usb_tx_cfg.channels = ucontrol->value.integer.value[0] + 1;
+
+	pr_debug("%s: usb_audio_tx_ch = %d\n", __func__, usb_tx_cfg.channels);
+	return 1;
+}
+
+static int usb_audio_tx_sample_rate_get(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	int sample_rate_val = 0;
+
+	switch (usb_tx_cfg.sample_rate) {
+	case SAMPLING_RATE_192KHZ:
+		sample_rate_val = 10;
+		break;
+	case SAMPLING_RATE_176P4KHZ:
+		sample_rate_val = 9;
+		break;
+	case SAMPLING_RATE_96KHZ:
+		sample_rate_val = 8;
+		break;
+	case SAMPLING_RATE_88P2KHZ:
+		sample_rate_val = 7;
+		break;
+	case SAMPLING_RATE_48KHZ:
+		sample_rate_val = 6;
+		break;
+	case SAMPLING_RATE_44P1KHZ:
+		sample_rate_val = 5;
+		break;
+	case SAMPLING_RATE_32KHZ:
+		sample_rate_val = 4;
+		break;
+	case SAMPLING_RATE_22P05KHZ:
+		sample_rate_val = 3;
+		break;
+	case SAMPLING_RATE_16KHZ:
+		sample_rate_val = 2;
+		break;
+	case SAMPLING_RATE_11P025KHZ:
+		sample_rate_val = 1;
+		break;
+	case SAMPLING_RATE_8KHZ:
+		sample_rate_val = 0;
+		break;
+	default:
+		sample_rate_val = 6;
+		break;
+	}
+
+	ucontrol->value.integer.value[0] = sample_rate_val;
+	pr_debug("%s: usb_audio_tx_sample_rate = %d\n", __func__,
+		 usb_tx_cfg.sample_rate);
+	return 0;
+}
+
+static int usb_audio_tx_sample_rate_put(struct snd_kcontrol *kcontrol,
+					struct snd_ctl_elem_value *ucontrol)
+{
+	switch (ucontrol->value.integer.value[0]) {
+	case 10:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_192KHZ;
+		break;
+	case 9:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_176P4KHZ;
+		break;
+	case 8:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_96KHZ;
+		break;
+	case 7:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_88P2KHZ;
+		break;
+	case 6:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_48KHZ;
+		break;
+	case 5:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_44P1KHZ;
+		break;
+	case 4:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_32KHZ;
+		break;
+	case 3:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_22P05KHZ;
+		break;
+	case 2:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_16KHZ;
+		break;
+	case 1:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_11P025KHZ;
+		break;
+	case 0:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_8KHZ;
+		break;
+	default:
+		usb_tx_cfg.sample_rate = SAMPLING_RATE_48KHZ;
+		break;
+	}
+
+	pr_debug("%s: control value = %ld, usb_audio_tx_sample_rate = %d\n",
+		__func__, ucontrol->value.integer.value[0],
+		usb_tx_cfg.sample_rate);
+	return 0;
+}
+
+static int usb_audio_tx_format_get(struct snd_kcontrol *kcontrol,
+				   struct snd_ctl_elem_value *ucontrol)
+{
+	switch (usb_tx_cfg.bit_format) {
+	case SNDRV_PCM_FORMAT_S24_3LE:
+		ucontrol->value.integer.value[0] = 2;
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		ucontrol->value.integer.value[0] = 1;
+		break;
+	case SNDRV_PCM_FORMAT_S16_LE:
+	default:
+		ucontrol->value.integer.value[0] = 0;
+		break;
+	}
+
+	pr_debug("%s: usb_audio_tx_format = %d, ucontrol value = %ld\n",
+		 __func__, usb_tx_cfg.bit_format,
+		 ucontrol->value.integer.value[0]);
+	return 0;
+}
+
+static int usb_audio_tx_format_put(struct snd_kcontrol *kcontrol,
+				   struct snd_ctl_elem_value *ucontrol)
+{
+	int rc = 0;
+
+	switch (ucontrol->value.integer.value[0]) {
+	case 2:
+		usb_tx_cfg.bit_format = SNDRV_PCM_FORMAT_S24_3LE;
+		break;
+	case 1:
+		usb_tx_cfg.bit_format = SNDRV_PCM_FORMAT_S24_LE;
+		break;
+	case 0:
+	default:
+		usb_tx_cfg.bit_format = SNDRV_PCM_FORMAT_S16_LE;
+		break;
+	}
+	pr_debug("%s: usb_audio_tx_format = %d, ucontrol value = %ld\n",
+		 __func__, usb_tx_cfg.bit_format,
+		 ucontrol->value.integer.value[0]);
+
+	return rc;
+}
+
 static int msm8996_auxpcm_rate_get(struct snd_kcontrol *kcontrol,
 				      struct snd_ctl_elem_value *ucontrol)
 {
@@ -1558,11 +1917,34 @@ static int msm_slim_5_tx_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 static int msm_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 				  struct snd_pcm_hw_params *params)
 {
+	struct snd_soc_dai_link *dai_link = rtd->dai_link;
 	struct snd_interval *rate = hw_param_interval(params,
 					SNDRV_PCM_HW_PARAM_RATE);
+	struct snd_interval *channels = hw_param_interval(params,
+					SNDRV_PCM_HW_PARAM_CHANNELS);
 
-	pr_debug("%s:\n", __func__);
-	rate->min = rate->max = SAMPLING_RATE_48KHZ;
+	pr_debug("%s: format = %d, rate = %d\n",
+			__func__, params_format(params), params_rate(params));
+
+	switch (dai_link->be_id) {
+	case MSM_BACKEND_DAI_USB_RX:
+		param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
+				usb_rx_cfg.bit_format);
+		rate->min = rate->max = usb_rx_cfg.sample_rate;
+		channels->min = channels->max = usb_rx_cfg.channels;
+		break;
+
+	case MSM_BACKEND_DAI_USB_TX:
+		param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,
+				usb_tx_cfg.bit_format);
+		rate->min = rate->max = usb_tx_cfg.sample_rate;
+		channels->min = channels->max = usb_tx_cfg.channels;
+		break;
+
+	default:
+		rate->min = rate->max = SAMPLING_RATE_48KHZ;
+		break;
+	}
 	return 0;
 }
 
@@ -1633,6 +2015,20 @@ static const struct snd_kcontrol_new msm_snd_controls[] = {
 			msm8996_hifi_put),
 	SOC_ENUM_EXT("VI_FEED_TX Channels", msm_snd_enum[12],
 			msm_vi_feed_tx_ch_get, msm_vi_feed_tx_ch_put),
+	SOC_ENUM_EXT("USB_AUDIO_RX Channels", usb_rx_chs,
+			usb_audio_rx_ch_get, usb_audio_rx_ch_put),
+	SOC_ENUM_EXT("USB_AUDIO_TX Channels", usb_tx_chs,
+			usb_audio_tx_ch_get, usb_audio_tx_ch_put),
+	SOC_ENUM_EXT("USB_AUDIO_RX SampleRate", usb_rx_sample_rate,
+			usb_audio_rx_sample_rate_get,
+			usb_audio_rx_sample_rate_put),
+	SOC_ENUM_EXT("USB_AUDIO_TX SampleRate", usb_tx_sample_rate,
+			usb_audio_tx_sample_rate_get,
+			usb_audio_tx_sample_rate_put),
+	SOC_ENUM_EXT("USB_AUDIO_RX Format", usb_rx_format,
+			usb_audio_rx_format_get, usb_audio_rx_format_put),
+	SOC_ENUM_EXT("USB_AUDIO_TX Format", usb_tx_format,
+			usb_audio_tx_format_get, usb_audio_tx_format_put),
 };
 
 static bool msm8996_swap_gnd_mic(struct snd_soc_codec *codec)
@@ -3178,6 +3574,33 @@ static struct snd_soc_dai_link msm8996_common_be_dai_links[] = {
 		.be_hw_params_fixup = msm_tx_be_hw_params_fixup,
 		.ops = &msm8996_mi2s_be_ops,
 		.ignore_suspend = 1,
+	},
+	{
+		.name = LPASS_BE_USB_AUDIO_RX,
+		.stream_name = "USB Audio Playback",
+		.cpu_dai_name = "msm-dai-q6-dev.28672",
+		.platform_name = "msm-pcm-routing",
+		.codec_name = "msm-stub-codec.1",
+		.codec_dai_name = "msm-stub-rx",
+		.no_pcm = 1,
+		.dpcm_playback = 1,
+		.be_id = MSM_BACKEND_DAI_USB_RX,
+		.be_hw_params_fixup = msm_be_hw_params_fixup,
+		.ignore_pmdown_time = 1,
+		.ignore_suspend = 1,
+	},
+	{
+		.name = LPASS_BE_USB_AUDIO_TX,
+		.stream_name = "USB Audio Capture",
+		.cpu_dai_name = "msm-dai-q6-dev.28673",
+		.platform_name = "msm-pcm-routing",
+		.codec_name = "msm-stub-codec.1",
+		.codec_dai_name = "msm-stub-tx",
+		.no_pcm = 1,
+		.dpcm_capture = 1,
+		.be_id = MSM_BACKEND_DAI_USB_TX,
+		.be_hw_params_fixup = msm_be_hw_params_fixup,
+		.ignore_suspend = 1,
 	}
 };