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path: root/sound/soc/codecs/sigmadsp-i2c.c
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2016-02-10ASoC: sigmadsp: Fix missleading return valuePascal Huerst1-1/+4
Forwarding the return value of i2c_master_send, leads to errors later on, since i2c_master_send returns the number of bytes transmittet. Check for ret < 0 instead and return 0 otherwise. Signed-off-by: Pascal Huerst <pascal.huerst@gmail.com> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-20ASoC: sigmadsp: Add support for fw v2Lars-Peter Clausen1-0/+29
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>
2014-11-20ASoC: sigmadsp: Restructure in preparation for fw v2 supportLars-Peter Clausen1-11/+41
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>
2014-06-06ASoC: sigmadsp: Split regmap and I2C support into separate modulesLars-Peter Clausen1-0/+35
When the SigmaDSP module is built-in, but the I2C core is build as a module we'll get a undefined reference: sound/built-in.o: In function `sigma_action_write_i2c': :(.text+0x5d8d4): undefined reference to `i2c_master_send' This can happen if a audio driver that is using the regmap SigmaDSP interface is built into the kernel, but core I2C support is build as a module. To fix this split the SigmaDSP module into three modules, one module providing the core infrastructure and two small modules implementing the regmap and I2C interfaces. This allows e.g. the core infrastructure and regmap support to be built into the kernel while I2C support can still be build as a module. Fixes: dab464b60 ("ASoC: Add ADAU1361/ADAU1761 audio CODEC support") Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org>