ASoC: rt1316-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/20221109091244.17198-1-shumingf@realtek.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt1316-sdw.c

@@ -254,6 +254,17 @@ static int rt1316_read_prop(struct sdw_slave *slave)
 	return 0;
 }
 
+static void rt1316_apply_bq_params(struct rt1316_sdw_priv *rt1316)
+{
+	unsigned int i, reg, data;
+
+	for (i = 0; i < rt1316->bq_params_cnt; i += 3) {
+		reg = rt1316->bq_params[i] | (rt1316->bq_params[i + 1] << 8);
+		data = rt1316->bq_params[i + 2];
+		regmap_write(rt1316->regmap, reg, data);
+	}
+}
+
 static int rt1316_io_init(struct device *dev, struct sdw_slave *slave)
 {
 	struct rt1316_sdw_priv *rt1316 = dev_get_drvdata(dev);
@@ -590,14 +601,42 @@ static struct sdw_slave_ops rt1316_slave_ops = {
 	.update_status = rt1316_update_status,
 };
 
+static int rt1316_sdw_parse_dt(struct rt1316_sdw_priv *rt1316, struct device *dev)
+{
+	int ret = 0;
+
+	device_property_read_u32(dev, "realtek,bq-params-cnt", &rt1316->bq_params_cnt);
+	if (rt1316->bq_params_cnt) {
+		rt1316->bq_params = devm_kzalloc(dev, rt1316->bq_params_cnt, GFP_KERNEL);
+		if (!rt1316->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", rt1316->bq_params, rt1316->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", rt1316->bq_params_cnt);
+	return ret;
+}
+
 static int rt1316_sdw_component_probe(struct snd_soc_component *component)
 {
+	struct rt1316_sdw_priv *rt1316 = snd_soc_component_get_drvdata(component);
 	int ret;
 
+	rt1316->component = component;
+	rt1316_sdw_parse_dt(rt1316, &rt1316->sdw_slave->dev);
+
 	ret = pm_runtime_resume(component->dev);
 	if (ret < 0 && ret != -EACCES)
 		return ret;
 
+	/* apply BQ params */
+	rt1316_apply_bq_params(rt1316);
+
 	return 0;
 }
 

sound/soc/codecs/rt1316-sdw.h

@@ -46,6 +46,8 @@ struct rt1316_sdw_priv {
 	struct sdw_bus_params params;
 	bool hw_init;
 	bool first_hw_init;
+	unsigned char *bq_params;
+	unsigned int bq_params_cnt;
 };
 
 struct sdw_stream_data {