dsp: add scrambler support in DSP over split a2dp

Add support to enable scrambler in COP Packetizer module
over split A2DP path to fix 44.1Khz playback.

CRs-Fixed: 2143142
Change-Id: I52fec39e10a1c0939fd49d1e1303b03312544abf
Signed-off-by: Preetam Singh Ranawat <apranawat@codeaurora.org>

asoc/msm-dai-q6-v2.c

@@ -2419,6 +2419,36 @@ static int msm_dai_q6_afe_input_bit_format_put(
 	return 0;
 }
 
+static int msm_dai_q6_afe_scrambler_mode_get(
+			struct snd_kcontrol *kcontrol,
+			struct snd_ctl_elem_value *ucontrol)
+{
+	struct msm_dai_q6_dai_data *dai_data = kcontrol->private_data;
+
+	if (!dai_data) {
+		pr_err("%s: Invalid dai data\n", __func__);
+		return -EINVAL;
+	}
+	ucontrol->value.integer.value[0] = dai_data->enc_config.scrambler_mode;
+
+	return 0;
+}
+
+static int msm_dai_q6_afe_scrambler_mode_put(
+			struct snd_kcontrol *kcontrol,
+			struct snd_ctl_elem_value *ucontrol)
+{
+	struct msm_dai_q6_dai_data *dai_data = kcontrol->private_data;
+
+	if (!dai_data) {
+		pr_err("%s: Invalid dai data\n", __func__);
+		return -EINVAL;
+	}
+	dai_data->enc_config.scrambler_mode = ucontrol->value.integer.value[0];
+	pr_debug("%s: afe scrambler mode : %d\n",
+		  __func__, dai_data->enc_config.scrambler_mode);
+	return 0;
+}
 
 static const struct snd_kcontrol_new afe_enc_config_controls[] = {
 	{
@@ -2436,6 +2466,10 @@ static const struct snd_kcontrol_new afe_enc_config_controls[] = {
 	SOC_ENUM_EXT("AFE Input Bit Format", afe_input_bit_format_enum[0],
 		     msm_dai_q6_afe_input_bit_format_get,
 		     msm_dai_q6_afe_input_bit_format_put),
+	SOC_SINGLE_EXT("AFE Scrambler Mode",
+		       0, 0, 1, 0,
+		       msm_dai_q6_afe_scrambler_mode_get,
+		       msm_dai_q6_afe_scrambler_mode_put),
 };
 
 static int msm_dai_q6_slim_rx_drift_info(struct snd_kcontrol *kcontrol,
@@ -2598,6 +2632,9 @@ static int msm_dai_q6_dai_probe(struct snd_soc_dai *dai)
 		rc = snd_ctl_add(dai->component->card->snd_card,
 				 snd_ctl_new1(&afe_enc_config_controls[2],
 				 dai_data));
+		rc = snd_ctl_add(dai->component->card->snd_card,
+				 snd_ctl_new1(&afe_enc_config_controls[3],
+				 dai_data));
 		rc = snd_ctl_add(dai->component->card->snd_card,
 				snd_ctl_new1(&avd_drift_config_controls[2],
 					dai));

dsp/q6afe.c

@@ -2961,7 +2961,8 @@ exit:
 static int q6afe_send_enc_config(u16 port_id,
 				 union afe_enc_config_data *cfg, u32 format,
 				 union afe_port_config afe_config,
-				 u16 afe_in_channels, u16 afe_in_bit_width)
+				 u16 afe_in_channels, u16 afe_in_bit_width,
+				 u32 scrambler_mode)
 {
 	struct afe_audioif_config_command config;
 	int index;
@@ -3058,6 +3059,20 @@ static int q6afe_send_enc_config(u16 port_id,
 		goto exit;
 	}
 
+	config.param.payload_size =
+		payload_size + sizeof(config.port.enc_set_scrambler_param);
+	pr_debug("%s:sending AFE_ENCODER_PARAM_ID_ENABLE_SCRAMBLING mode= %d to DSP payload = %d\n",
+		  __func__, scrambler_mode, config.param.payload_size);
+	config.pdata.param_id = AFE_ENCODER_PARAM_ID_ENABLE_SCRAMBLING;
+	config.pdata.param_size = sizeof(config.port.enc_set_scrambler_param);
+	config.port.enc_set_scrambler_param.enable_scrambler = scrambler_mode;
+	ret = afe_apr_send_pkt(&config, &this_afe.wait[index]);
+	if (ret) {
+		pr_err("%s: AFE_ENCODER_PARAM_ID_ENABLE_SCRAMBLING for port 0x%x failed %d\n",
+			__func__, port_id, ret);
+		goto exit;
+	}
+
 	config.param.payload_size =
 			payload_size + sizeof(config.port.media_type);
 	config.pdata.param_size = sizeof(config.port.media_type);
@@ -3094,7 +3109,8 @@ exit:
 
 static int __afe_port_start(u16 port_id, union afe_port_config *afe_config,
 			    u32 rate, u16 afe_in_channels, u16 afe_in_bit_width,
-			    union afe_enc_config_data *cfg, u32 enc_format)
+			    union afe_enc_config_data *cfg, u32 enc_format,
+			    u32 scrambler_mode)
 {
 	struct afe_audioif_config_command config;
 	int ret = 0;
@@ -3357,7 +3373,8 @@ static int __afe_port_start(u16 port_id, union afe_port_config *afe_config,
 					__func__, enc_format);
 		ret = q6afe_send_enc_config(port_id, cfg, enc_format,
 					    *afe_config, afe_in_channels,
-					    afe_in_bit_width);
+					    afe_in_bit_width,
+					    scrambler_mode);
 		if (ret) {
 			pr_err("%s: AFE encoder config for port 0x%x failed %d\n",
 				__func__, port_id, ret);
@@ -3410,7 +3427,7 @@ int afe_port_start(u16 port_id, union afe_port_config *afe_config,
 		   u32 rate)
 {
 	return __afe_port_start(port_id, afe_config, rate,
-				0, 0, NULL, ASM_MEDIA_FMT_NONE);
+				0, 0, NULL, ASM_MEDIA_FMT_NONE, 0);
 }
 EXPORT_SYMBOL(afe_port_start);
 
@@ -3433,7 +3450,8 @@ int afe_port_start_v2(u16 port_id, union afe_port_config *afe_config,
 {
 	return __afe_port_start(port_id, afe_config, rate,
 				afe_in_channels, afe_in_bit_width,
-				&enc_cfg->data, enc_cfg->format);
+				&enc_cfg->data, enc_cfg->format,
+				enc_cfg->scrambler_mode);
 }
 EXPORT_SYMBOL(afe_port_start_v2);
 

include/dsp/apr_audio-v2.h

@@ -3118,6 +3118,12 @@ struct afe_param_id_aptx_sync_mode {
  */
 #define AFE_ENCODER_PARAM_ID_ENC_FMT_ID         0x0001322B
 
+/*
+ * Encoder scrambler parameter for the #AVS_MODULE_ID_ENCODER module.
+ * This parameter cannot be set runtime.
+ */
+#define AFE_ENCODER_PARAM_ID_ENABLE_SCRAMBLING         0x0001323C
+
 /*
  * Data format to send compressed data
  * is transmitted/received over Slimbus lines.
@@ -3451,6 +3457,7 @@ union afe_enc_config_data {
 
 struct afe_enc_config {
 	u32 format;
+	u32 scrambler_mode;
 	union afe_enc_config_data data;
 };
 
@@ -3474,6 +3481,18 @@ struct avs_enc_packetizer_id_param_t {
 	uint32_t enc_packetizer_id;
 };
 
+/*
+ * Payload of the AVS_ENCODER_PARAM_ID_ENABLE_SCRAMBLING parameter.
+ */
+struct avs_enc_set_scrambler_param_t {
+	/*
+	 *  Supported values:
+	 *  1 : enable scrambler
+	 *  0 : disable scrambler
+	 */
+	uint32_t enable_scrambler;
+};
+
 union afe_port_config {
 	struct afe_param_id_pcm_cfg               pcm;
 	struct afe_param_id_i2s_cfg               i2s;
@@ -3492,6 +3511,7 @@ union afe_port_config {
 	struct afe_port_media_type_t              media_type;
 	struct afe_enc_cfg_blk_param_t            enc_blk_param;
 	struct avs_enc_packetizer_id_param_t      enc_pkt_id_param;
+	struct avs_enc_set_scrambler_param_t      enc_set_scrambler_param;
 } __packed;
 
 struct afe_audioif_config_command_no_payload {