--- zzzz-none-000/linux-3.10.107/sound/soc/codecs/sigmadsp.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/soc/codecs/sigmadsp.h	2021-02-04 17:41:59.000000000 +0000
@@ -11,11 +11,56 @@
 
 #include <linux/device.h>
 #include <linux/regmap.h>
+#include <linux/list.h>
+
+#include <sound/pcm.h>
+
+struct sigmadsp;
+struct snd_soc_component;
+struct snd_pcm_substream;
+
+struct sigmadsp_ops {
+	int (*safeload)(struct sigmadsp *sigmadsp, unsigned int addr,
+			const uint8_t *data, size_t len);
+};
+
+struct sigmadsp {
+	const struct sigmadsp_ops *ops;
+
+	struct list_head ctrl_list;
+	struct list_head data_list;
+
+	struct snd_pcm_hw_constraint_list rate_constraints;
+
+	unsigned int current_samplerate;
+	struct snd_soc_component *component;
+	struct device *dev;
+
+	struct mutex lock;
+
+	void *control_data;
+	int (*write)(void *, unsigned int, const uint8_t *, size_t);
+	int (*read)(void *, unsigned int, uint8_t *, size_t);
+};
+
+struct sigmadsp *devm_sigmadsp_init(struct device *dev,
+	const struct sigmadsp_ops *ops, const char *firmware_name);
+void sigmadsp_reset(struct sigmadsp *sigmadsp);
+
+int sigmadsp_restrict_params(struct sigmadsp *sigmadsp,
+	struct snd_pcm_substream *substream);
 
 struct i2c_client;
 
-extern int process_sigma_firmware(struct i2c_client *client, const char *name);
-extern int process_sigma_firmware_regmap(struct device *dev,
-		struct regmap *regmap, const char *name);
+struct sigmadsp *devm_sigmadsp_init_regmap(struct device *dev,
+	struct regmap *regmap, const struct sigmadsp_ops *ops,
+	const char *firmware_name);
+struct sigmadsp *devm_sigmadsp_init_i2c(struct i2c_client *client,
+	const struct sigmadsp_ops *ops,	const char *firmware_name);
+
+int sigmadsp_attach(struct sigmadsp *sigmadsp,
+	struct snd_soc_component *component);
+int sigmadsp_setup(struct sigmadsp *sigmadsp, unsigned int rate);
+void sigmadsp_reset(struct sigmadsp *sigmadsp);
 
 #endif