asoc: Add support to read adsp variant and set sndcard name

Soundcard name might need to be modified based on adsp
sku variants. Add support to read the adsp variant from
nvmem and set the soundcard name.

Change-Id: I2ab0cef6f90a4dd512f736aa6b4540b21a74e917
Signed-off-by: Sarath Varma Ganapathiraju <[email protected]>

asoc/pineapple.c

@@ -19,6 +19,7 @@
 #include <linux/soc/qcom/wcd939x-i2c.h>
 #endif
 #include <linux/pm_qos.h>
+#include <linux/nvmem-consumer.h>
 #include <sound/control.h>
 #include <sound/core.h>
 #include <sound/soc.h>
@@ -2274,6 +2275,50 @@ void msm_common_set_pdata(struct snd_soc_card *card,
 	pdata->common_pdata = common_pdata;
 }
 
+static int msm_asoc_parse_soundcard_name(struct platform_device *pdev,
+				struct snd_soc_card *card)
+{
+	struct nvmem_cell *cell = NULL;
+	size_t len = 0;
+	u32 *buf = NULL;
+	u32 adsp_var_idx = 0;
+	int ret = 0;
+
+	/* get adsp variant idx */
+	cell = nvmem_cell_get(&pdev->dev, "adsp_variant");
+	if (IS_ERR_OR_NULL(cell)) {
+		dev_dbg(&pdev->dev, "%s: FAILED to get nvmem cell\n", __func__);
+		goto parse;
+	}
+	buf = nvmem_cell_read(cell, &len);
+	nvmem_cell_put(cell);
+	if (IS_ERR_OR_NULL(buf)) {
+		dev_dbg(&pdev->dev, "%s: FAILED to read nvmem cell\n", __func__);
+		goto parse;
+	}
+	if (len <= 0 || len > sizeof(u32)) {
+		dev_dbg(&pdev->dev, "%s: nvmem cell length out of range: %d\n",
+			__func__, len);
+		kfree(buf);
+		goto parse;
+	}
+
+	memcpy(&adsp_var_idx, buf, len);
+	kfree(buf);
+
+parse:
+	if (adsp_var_idx)
+		ret = snd_soc_of_parse_card_name(card, "qcom,sku-model");
+	else
+		ret = snd_soc_of_parse_card_name(card, "qcom,model");
+
+	if (ret)
+		dev_err(&pdev->dev, "%s: parse card name failed, err:%d\n",
+			__func__, ret);
+
+	return ret;
+}
+
 static int msm_asoc_machine_probe(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = NULL;
@@ -2328,9 +2373,9 @@ static int msm_asoc_machine_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, card);
 	snd_soc_card_set_drvdata(card, pdata);
 
-	ret = snd_soc_of_parse_card_name(card, "qcom,model");
+	ret = msm_asoc_parse_soundcard_name(pdev, card);
 	if (ret) {
-		dev_err(&pdev->dev, "%s: parse card name failed, err:%d\n",
+		dev_err(&pdev->dev, "%s: parse soundcard name failed, err:%d\n",
 			__func__, ret);
 		goto err;
 	}