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ASoC: rt5677: fix SPI dependency 

The rt5677 codec has gained code that requires SPI to work correctly,
but there is no provision in Kconfig to prevent the driver from
being used when SPI is disabled or a loadable module, resulting
in this build error:

sound/built-in.o: In function `rt5677_spi_write':
:(.text+0xa7ba0): undefined reference to `spi_sync'
sound/built-in.o: In function `rt5677_spi_driver_init':
:(.init.text+0x253c): undefined reference to `spi_register_driver'

ERROR: "spi_sync" [sound/soc/codecs/snd-soc-rt5677-spi.ko] undefined!
ERROR: "spi_register_driver" [sound/soc/codecs/snd-soc-rt5677-spi.ko] undefined!

This makes the SPI portion of the driver depend on the SPI subsystem,
and disables the function that uses SPI for firmware download if SPI
is disabled. The latter may not be the correct solution, but I could
not come up with a better one.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: af48f1d08a ("ASoC: rt5677: Support DSP function for VAD application")
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Arnd Bergmann 2015-01-28 22:31:30 +01:00 committed by Mark Brown
parent 9913b9f549
commit 4c121129c9
2 changed files with 4 additions and 1 deletions
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2
sound/soc/codecs/Kconfig
View File

@ -525,7 +525,7 @@ config SND_SOC_RT5677
config SND_SOC_RT5677_SPI
tristate
default SND_SOC_RT5677
default SND_SOC_RT5677 && SPI
#Freescale sgtl5000 codec
config SND_SOC_SGTL5000

3
sound/soc/codecs/rt5677.c
View File

@ -702,6 +702,9 @@ static int rt5677_set_dsp_vad(struct snd_soc_codec *codec, bool on)
static bool activity;
int ret;
if (!IS_ENABLED(CONFIG_SND_SOC_RT5677_SPI))
return -ENXIO;
if (on && !activity) {
activity = true;