text: /*
   * Load firmware files from Analog Devices SigmaStudio
   *
   * Copyright 2009-2011 Analog Devices Inc.
   *
   * Licensed under the GPL-2 or later.
   */
  
  #ifndef __SIGMA_FIRMWARE_H__
  #define __SIGMA_FIRMWARE_H__
  
  #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;
  
  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
  