ASoC: rt1308-sdw: get BQ params property and apply them

If the machine driver level sets the BQ params into the device property,
the codec driver will get the BQ params and apply them.
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com
Link: https://lore.kernel.org/r/20221109091234.17180-1-shumingf@realtek.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt1308-sdw.c

@@ -197,6 +197,17 @@ static void rt1308_apply_calib_params(struct rt1308_sdw_priv *rt1308)
 		efuse_c_btl_l, efuse_c_btl_r);
 }
 
+static void rt1308_apply_bq_params(struct rt1308_sdw_priv *rt1308)
+{
+	unsigned int i, reg, data;
+
+	for (i = 0; i < rt1308->bq_params_cnt; i += 3) {
+		reg = rt1308->bq_params[i] | (rt1308->bq_params[i + 1] << 8);
+		data = rt1308->bq_params[i + 2];
+		regmap_write(rt1308->regmap, reg, data);
+	}
+}
+
 static int rt1308_io_init(struct device *dev, struct sdw_slave *slave)
 {
 	struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
@@ -619,14 +630,42 @@ static const struct sdw_slave_ops rt1308_slave_ops = {
 	.bus_config = rt1308_bus_config,
 };
 
+static int rt1308_sdw_parse_dt(struct rt1308_sdw_priv *rt1308, struct device *dev)
+{
+	int ret = 0;
+
+	device_property_read_u32(dev, "realtek,bq-params-cnt", &rt1308->bq_params_cnt);
+	if (rt1308->bq_params_cnt) {
+		rt1308->bq_params = devm_kzalloc(dev, rt1308->bq_params_cnt, GFP_KERNEL);
+		if (!rt1308->bq_params) {
+			dev_err(dev, "Could not allocate bq_params memory\n");
+			ret = -ENOMEM;
+		} else {
+			ret = device_property_read_u8_array(dev, "realtek,bq-params", rt1308->bq_params, rt1308->bq_params_cnt);
+			if (ret < 0)
+				dev_err(dev, "Could not read list of realtek,bq-params\n");
+		}
+	}
+
+	dev_dbg(dev, "bq_params_cnt=%d\n", rt1308->bq_params_cnt);
+	return ret;
+}
+
 static int rt1308_sdw_component_probe(struct snd_soc_component *component)
 {
+	struct rt1308_sdw_priv *rt1308 = snd_soc_component_get_drvdata(component);
 	int ret;
 
+	rt1308->component = component;
+	rt1308_sdw_parse_dt(rt1308, &rt1308->sdw_slave->dev);
+
 	ret = pm_runtime_resume(component->dev);
 	if (ret < 0 && ret != -EACCES)
 		return ret;
 
+	/* apply BQ params */
+	rt1308_apply_bq_params(rt1308);
+
 	return 0;
 }
 

sound/soc/codecs/rt1308-sdw.h

@@ -166,6 +166,8 @@ struct rt1308_sdw_priv {
 	int rx_mask;
 	int slots;
 	int hw_ver;
+	unsigned char *bq_params;
+	unsigned int bq_params_cnt;
 };
 
 struct sdw_stream_data {