[alsa-devel] [PATCH v2] ASoC: cs42888: Add codec driver support
mark.rutland at arm.com
Tue Mar 11 12:30:53 CET 2014
On Tue, Mar 11, 2014 at 11:19:51AM +0000, Nicolin Chen wrote:
> This patch adds support for the Cirrus Logic CS42888 Audio CODEC that
> has four 24-bit A/D and eight 24-bit D/A converters.
> [ CS42888 supports both I2C and SPI control ports. As initial patch,
> this patch only adds the support for I2C. ]
> Signed-off-by: Nicolin Chen <Guangyu.Chen at freescale.com>
> * Separated driver into I2C and main part drivers.
> * Added error out if failed to get clock.
> * Enabled Auto-mute function as default.
> * Disabled runtime-pm in remove().
> * Added return value checking for regcache_sync().
> * Fixed some trival parts like 'const' as Lars mentioned.
> .../devicetree/bindings/sound/cs42888.txt | 27 ++
> sound/soc/codecs/Kconfig | 10 +
> sound/soc/codecs/Makefile | 4 +
> sound/soc/codecs/cs42888-i2c.c | 68 +++
> sound/soc/codecs/cs42888.c | 536 +++++++++++++++++++++
> sound/soc/codecs/cs42888.h | 213 ++++++++
> 6 files changed, 858 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/sound/cs42888.txt
> create mode 100644 sound/soc/codecs/cs42888-i2c.c
> create mode 100644 sound/soc/codecs/cs42888.c
> create mode 100644 sound/soc/codecs/cs42888.h
> diff --git a/Documentation/devicetree/bindings/sound/cs42888.txt b/Documentation/devicetree/bindings/sound/cs42888.txt
> new file mode 100644
> index 0000000..7736527
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/cs42888.txt
> @@ -0,0 +1,27 @@
> +CS42888 audio CODEC
> +Required properties:
> + - compatible : "cirrus,cs42888"
> + - reg : the I2C address of the device for I2C
> + - clocks : phandle to the clock source for MCLK
> + - clock-names : must contain "mclk".
If you use clock-names, please define the clocks property in terms of
clock-names to avoid redundancy. e.g.
- clocks: a list of phandles + clock-specifiers, one for each entry in
It makes the relationship between the two clearer, and makes it far
easier to alter the binding in future if required.
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