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https://github.com/edk2-porting/linux-next.git
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a35daac77a
This patch adds support for the v2 version of the SigmaDSP firmware file format. The new format has support for having different program and parameter settings for different samplerates. In addition it stores metadata describing the firmware. This metadata includes the set of supported samplerates which will be used to restrict the samplerates that can be selected by userspace. Also included is information about the modifiable parameters. Those will be exposed as ALSA controls so they can be changed at runtime. The new format is based on a binary type-length-value structure that makes it both forward and backwards compatible. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
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* Load firmware files from Analog Devices SigmaStudio
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*
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* Copyright 2009-2011 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#ifndef __SIGMA_FIRMWARE_H__
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#define __SIGMA_FIRMWARE_H__
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#include <linux/device.h>
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#include <linux/regmap.h>
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#include <linux/list.h>
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#include <sound/pcm.h>
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struct sigmadsp;
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struct snd_soc_component;
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struct snd_pcm_substream;
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struct sigmadsp_ops {
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int (*safeload)(struct sigmadsp *sigmadsp, unsigned int addr,
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const uint8_t *data, size_t len);
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};
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struct sigmadsp {
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const struct sigmadsp_ops *ops;
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struct list_head ctrl_list;
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struct list_head data_list;
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struct snd_pcm_hw_constraint_list rate_constraints;
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unsigned int current_samplerate;
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struct snd_soc_component *component;
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struct device *dev;
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struct mutex lock;
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void *control_data;
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int (*write)(void *, unsigned int, const uint8_t *, size_t);
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int (*read)(void *, unsigned int, uint8_t *, size_t);
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};
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struct sigmadsp *devm_sigmadsp_init(struct device *dev,
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const struct sigmadsp_ops *ops, const char *firmware_name);
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void sigmadsp_reset(struct sigmadsp *sigmadsp);
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int sigmadsp_restrict_params(struct sigmadsp *sigmadsp,
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struct snd_pcm_substream *substream);
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struct i2c_client;
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struct sigmadsp *devm_sigmadsp_init_regmap(struct device *dev,
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struct regmap *regmap, const struct sigmadsp_ops *ops,
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const char *firmware_name);
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struct sigmadsp *devm_sigmadsp_init_i2c(struct i2c_client *client,
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const struct sigmadsp_ops *ops, const char *firmware_name);
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int sigmadsp_attach(struct sigmadsp *sigmadsp,
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struct snd_soc_component *component);
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int sigmadsp_setup(struct sigmadsp *sigmadsp, unsigned int rate);
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void sigmadsp_reset(struct sigmadsp *sigmadsp);
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#endif
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