diff options
| author | Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com> | 2018-03-16 16:08:13 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-03-18 17:57:54 -0700 |
| commit | 7c3c20f2bec1e8bdaadd551a4b75f1834a7cb974 (patch) | |
| tree | 020714b15ea8c8d115f43396bacc7b5edf33d676 /sound/soc/uniphier/aio-core.c | |
| parent | 8bde8fd64d1b8f8bc1577e28ff412553597b6adb (diff) | |
ASoC: uniphier: add syscon property for UniPhier sound system
This patch adds syscon property for specifying soc-glue core.
Currently, soc-glue core is used for changing the state of S/PDIF
signal output pin to signal output state or Hi-Z state. After
resetting of SoC Hi-Z state is selected. This driver set to signal
output state when syscon property is available.
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/uniphier/aio-core.c')
| -rw-r--r-- | sound/soc/uniphier/aio-core.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sound/soc/uniphier/aio-core.c b/sound/soc/uniphier/aio-core.c index 1711361fc0c2..6d50042a4571 100644 --- a/sound/soc/uniphier/aio-core.c +++ b/sound/soc/uniphier/aio-core.c @@ -84,6 +84,27 @@ u64 aio_rb_space_to_end(struct uniphier_aio_sub *sub) } /** + * aio_iecout_set_enable - setup IEC output via SoC glue + * @chip: the AIO chip pointer + * @enable: false to stop the output, true to start + * + * Set enabled or disabled S/PDIF signal output to out of SoC via AOnIEC pins. + * This function need to call at driver startup. + * + * The regmap of SoC glue is specified by 'socionext,syscon' optional property + * of DT. This function has no effect if no property. + */ +void aio_iecout_set_enable(struct uniphier_aio_chip *chip, bool enable) +{ + struct regmap *r = chip->regmap_sg; + + if (!r) + return; + + regmap_write(r, SG_AOUTEN, (enable) ? ~0 : 0); +} + +/** * aio_chip_set_pll - set frequency to audio PLL * @chip : the AIO chip pointer * @source: PLL |