linux-kernel - [PATCH 6/8] ASoC: atmel: support CCF based clks

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Date:	Mon, 17 Mar 2014 17:45:39 +0800
From:	Bo Shen <voice.shen@...el.com>
To:	Mark Brown <broonie@...nel.org>, nicolas.ferre@...el.com
Cc:	Boris BREZILLON <b.brezillon@...rkiz.com>,
	Bo Shen <voice.shen@...el.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	Wolfram Sang <wsa@...-dreams.de>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 6/8] ASoC: atmel: support CCF based clks

From: Boris BREZILLON <b.brezillon@...rkiz.com>

Provide dev to clk_get function if we're using CCF based clks.
CCF based prog clks support automatic parent selection when asking for a
specific rate: remove the clk32k clk retrieval if we're using these clks.

Signed-off-by: Boris BREZILLON <b.brezillon@...rkiz.com>
[voice.shen@...el.com: switch to devm manage function]
Signed-off-by: Bo Shen <voice.shen@...el.com>

Signed-off-by: Bo Shen <voice.shen@...el.com>
---

 sound/soc/atmel/atmel_wm8904.c | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/sound/soc/atmel/atmel_wm8904.c b/sound/soc/atmel/atmel_wm8904.c
index b4e3690..a797d33 100644
--- a/sound/soc/atmel/atmel_wm8904.c
+++ b/sound/soc/atmel/atmel_wm8904.c
@@ -170,25 +170,26 @@ static int atmel_asoc_wm8904_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	mclk = clk_get(NULL, "pck0");
+	mclk = devm_clk_get(&pdev->dev, "pck0");
 	if (IS_ERR(mclk)) {
 		dev_err(&pdev->dev, "failed to get pck0\n");
 		ret = PTR_ERR(mclk);
 		goto err_set_audio;
 	}
 
-	clk_src = clk_get(NULL, "clk32k");
-	if (IS_ERR(clk_src)) {
-		dev_err(&pdev->dev, "failed to get clk32k\n");
-		ret = PTR_ERR(clk_src);
-		goto err_set_audio;
-	}
+	if (!IS_ENABLED(CONFIG_COMMON_CLK)) {
+		clk_src = devm_clk_get(&pdev->dev, "clk32k");
+		if (IS_ERR(clk_src)) {
+			dev_err(&pdev->dev, "failed to get clk32k\n");
+			ret = PTR_ERR(clk_src);
+			goto err_set_audio;
+		}
 
-	ret = clk_set_parent(mclk, clk_src);
-	clk_put(clk_src);
-	if (ret != 0) {
-		dev_err(&pdev->dev, "failed to set MCLK parent\n");
-		goto err_set_audio;
+		ret = clk_set_parent(mclk, clk_src);
+		if (ret != 0) {
+			dev_err(&pdev->dev, "failed to set MCLK parent\n");
+			goto err_set_audio;
+		}
 	}
 
 	dev_info(&pdev->dev, "setting pck0 to %dHz\n", MCLK_RATE);
-- 
1.8.5.2

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