From: Jianqun <jay.xu@rock-chips.com>
Date: Sat, 13 Sep 2014 00:43:13 +0000 (+0800)
Subject: ASoC: rockchip-i2s: enable "hclk" for rockchip I2S controller
X-Git-Tag: firefly_0821_release~176^2~2610^2~90^2~4^3~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=01605ad12875c7b5ed71b486f9badb338f4f8c21;p=firefly-linux-kernel-4.4.55.git

ASoC: rockchip-i2s: enable "hclk" for rockchip I2S controller

As "hclk" is used for rockchip I2S controller, driver must to enable
it in probe.

Tested on RK3288 with max98090.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 8d8e4b59049f..dd423c611d96 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -419,6 +419,11 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "Can't retrieve i2s bus clock\n");
 		return PTR_ERR(i2s->hclk);
 	}
+	ret = clk_prepare_enable(i2s->hclk);
+	if (ret) {
+		dev_err(i2s->dev, "hclock enable failed %d\n", ret);
+		return ret;
+	}
 
 	i2s->mclk = devm_clk_get(&pdev->dev, "i2s_clk");
 	if (IS_ERR(i2s->mclk)) {