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d48b088e3e
The v2 file format of the SigmaDSP takes a more declarative style compared to the imperative style of the v1 format. In addition some features that are supported with v2 require the driver to keep state around for the firmware. This requires a bit of restructuring of both the firmware loader itself and the drivers making use of the firmware loader. Instead of loading and executing the firmware in place when the DSP is configured the firmware is now loaded at driver probe time. This is required since the new firmware format will in addition to the firmware data itself contain meta information describing the firmware and its requirements and capabilities. Those will for example be used to restrict the supported samplerates advertised by the driver to userspace to the list of samplerates supported for the firmware. This only does the restructuring required by the v2 format, but does not yet add support for the new format itself. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
61 lines
1.5 KiB
C
61 lines
1.5 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 data_list;
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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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void *control_data;
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int (*write)(void *, unsigned int, const 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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