4.14-stable review patch. If anyone has any objections, please let me know.
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From: Jaechul Lee jcsing.lee@samsung.com
commit 975b6a93088e83a41ba2f0dec2f086678fdb2a7a upstream.
devm_gpiod_get is called with GPIOF_OUT_INIT_LOW but the function doesn't allow the parameters. Unluckily, GPIOF_OUT_INIT_LOW is same value as GPIOD_ASIS and gpio direction isn't set properly.
Muted stream comes up when I try recording some sounds on TM2. mic-bias gpiod state can't be changed because the gpiod is created with the invalid parameter. The gpio should be set GPIOD_OUT_HIGH.
Fixes: 1bfbc260a5b4 ("ASoC: samsung: Add machine driver for Exynos5433 based TM2 board") Signed-off-by: Jaechul Lee jcsing.lee@samsung.com Reviewed-by: Krzysztof Kozlowski krzk@kernel.org Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sudip Mukherjee sudipm.mukherjee@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- sound/soc/samsung/tm2_wm5110.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- a/sound/soc/samsung/tm2_wm5110.c +++ b/sound/soc/samsung/tm2_wm5110.c @@ -436,8 +436,7 @@ static int tm2_probe(struct platform_dev snd_soc_card_set_drvdata(card, priv); card->dev = dev;
- priv->gpio_mic_bias = devm_gpiod_get(dev, "mic-bias", - GPIOF_OUT_INIT_LOW); + priv->gpio_mic_bias = devm_gpiod_get(dev, "mic-bias", GPIOD_OUT_HIGH); if (IS_ERR(priv->gpio_mic_bias)) { dev_err(dev, "Failed to get mic bias gpio\n"); return PTR_ERR(priv->gpio_mic_bias);