ASoC: tas2783A: sdw_utils: support ch 3 & 4

 Currently the machine driver for tas2783A can only
support 2 channels. This patch adds support for
2 channel playback with 4 device setup.

Signed-off-by: Niranjan H Y <niranjan.hy@ti.com>
---
v2:
- commit message updated

Author: niranjanhyti

sound/soc/sdw_utils/soc_sdw_ti_amp.c

@@ -57,6 +57,10 @@ int asoc_sdw_ti_spk_rtd_init(struct snd_soc_pcm_runtime *rtd,
 			strscpy(speaker, "Left Spk", sizeof(speaker));
 		} else if (!strncmp(prefix, "tas2783-2", strlen("tas2783-2"))) {
 			strscpy(speaker, "Right Spk", sizeof(speaker));
+		} else if (!strncmp(prefix, "tas2783-3", strlen("tas2783-3"))) {
+			strscpy(speaker, "Left Spk2", sizeof(speaker));
+		} else if (!strncmp(prefix, "tas2783-4", strlen("tas2783-4"))) {
+			strscpy(speaker, "Right Spk2", sizeof(speaker));
 		} else {
 			ret = -EINVAL;
 			dev_err(card->dev, "unhandled prefix %s", prefix);

sound/soc/sdw_utils/soc_sdw_utils.c

@@ -40,11 +40,25 @@ static const struct snd_soc_dapm_widget lr_spk_widgets[] = {
 	SND_SOC_DAPM_SPK("Right Spk", NULL),
 };
 
+static const struct snd_soc_dapm_widget lr_4spk_widgets[] = {
+	SND_SOC_DAPM_SPK("Left Spk", NULL),
+	SND_SOC_DAPM_SPK("Right Spk", NULL),
+	SND_SOC_DAPM_SPK("Left Spk2", NULL),
+	SND_SOC_DAPM_SPK("Right Spk2", NULL),
+};
+
 static const struct snd_kcontrol_new lr_spk_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Left Spk"),
 	SOC_DAPM_PIN_SWITCH("Right Spk"),
 };
 
+static const struct snd_kcontrol_new lr_4spk_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Left Spk"),
+	SOC_DAPM_PIN_SWITCH("Right Spk"),
+	SOC_DAPM_PIN_SWITCH("Left Spk2"),
+	SOC_DAPM_PIN_SWITCH("Right Spk2"),
+};
+
 static const struct snd_soc_dapm_widget rt700_widgets[] = {
 	SND_SOC_DAPM_HP("Headphones", NULL),
 	SND_SOC_DAPM_MIC("AMIC", NULL),
@@ -69,10 +83,10 @@ struct asoc_sdw_codec_info codec_info_list[] = {
 				.dailink = {SOC_SDW_AMP_OUT_DAI_ID, SOC_SDW_AMP_IN_DAI_ID},
 				.init = asoc_sdw_ti_amp_init,
 				.rtd_init = asoc_sdw_ti_spk_rtd_init,
-				.controls = lr_spk_controls,
-				.num_controls = ARRAY_SIZE(lr_spk_controls),
-				.widgets = lr_spk_widgets,
-				.num_widgets = ARRAY_SIZE(lr_spk_widgets),
+				.controls = lr_4spk_controls,
+				.num_controls = ARRAY_SIZE(lr_4spk_controls),
+				.widgets = lr_4spk_widgets,
+				.num_widgets = ARRAY_SIZE(lr_4spk_widgets),
 			},
 		},
 		.dai_num = 1,