From a728f56094e7cf60a1dc0642fe86901d1a4dfb4e Mon Sep 17 00:00:00 2001 From: Vitaly Wool Date: Thu, 17 Aug 2017 13:42:36 +0200 Subject: ASoC: make clock direction configurable in asoc-simple Some CPU drivers (e. g. davinci-mcasp) may require the system clock to be configured as OUT, while there's no good way currently to set SND_SOC_CLK_OUT in simple-soc driver if the clock is fixed-rate. This patch makes asoc_simple_card_init_dai() initialize clock to SND_SOCK_CLK_OUT if explicitly stated in the relevant dts file. This change is transparent and doesn't change the default behavior. Signed-off-by: Vitaly Wool Signed-off-by: Mark Brown --- sound/soc/generic/simple-card-utils.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'sound/soc/generic/simple-card-utils.c') diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c index 26d64fa..af44c8c 100644 --- a/sound/soc/generic/simple-card-utils.c +++ b/sound/soc/generic/simple-card-utils.c @@ -196,7 +196,11 @@ int asoc_simple_card_parse_clk(struct device *dev, simple_dai->sysclk = clk_get_rate(clk); } - dev_dbg(dev, "%s : sysclk = %d\n", name, simple_dai->sysclk); + if (of_property_read_bool(node, "system-clock-direction-out")) + simple_dai->clk_direction = SND_SOC_CLOCK_OUT; + + dev_dbg(dev, "%s : sysclk = %d, direction %d\n", name, + simple_dai->sysclk, simple_dai->clk_direction); return 0; } @@ -310,7 +314,8 @@ int asoc_simple_card_init_dai(struct snd_soc_dai *dai, int ret; if (simple_dai->sysclk) { - ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk, 0); + ret = snd_soc_dai_set_sysclk(dai, 0, simple_dai->sysclk, + simple_dai->clk_direction); if (ret && ret != -ENOTSUPP) { dev_err(dai->dev, "simple-card: set_sysclk error\n"); return ret; -- cgit v1.1