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misc: atmel-ssc: register as sound DAI if #sound-dai-cells is present

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The SSC is currently not usable with the ASoC simple-audio-card, as
every SSC audio user has to build a platform driver that may do as
little as calling atmel_ssc_set_audio/atmel_ssc_put_audio (which
allocates the SSC and registers a DAI with the ASoC subsystem).

So, have that happen automatically, if the #sound-dai-cells property
is present in devicetree, which it has to be anyway for simple audio
card to work.

Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Rosin 2016-12-06 20:22:36 +01:00 • committed by Mark Brown
parent a5de5b74a5
commit e8314d7d53
3 changed files with 53 additions and 0 deletions
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1
include/linux/atmel-ssc.h
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@ -20,6 +20,7 @@ struct ssc_device {
int user;
int irq;
bool clk_from_rk_pin;
bool sound_dai;
};
struct ssc_device * __must_check ssc_request(unsigned int ssc_num);