From: Viresh Kumar <viresh.kumar@linaro.org>
Date: Fri, 28 Sep 2012 10:28:23 +0000 (+0530)
Subject: mmc: sdhci-spear: Add clk_{un}prepare() support
X-Git-Tag: firefly_0821_release~3680^2~1873^2~1
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=da764f97df0e5e05e5453279f934531c0cf52e11;p=firefly-linux-kernel-4.4.55.git

mmc: sdhci-spear: Add clk_{un}prepare() support

clk_{un}prepare is mandatory for platforms using common clock framework.
Since this driver is used by SPEAr platform, which supports common clock
framework, add clk_{un}prepare() support for it.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

diff --git a/Documentation/devicetree/bindings/mmc/sdhci-spear.txt b/Documentation/devicetree/bindings/mmc/sdhci-spear.txt
index 84d6e297908f..fd3643e7e467 100644
--- a/Documentation/devicetree/bindings/mmc/sdhci-spear.txt
+++ b/Documentation/devicetree/bindings/mmc/sdhci-spear.txt
@@ -9,13 +9,10 @@ Required properties:
 Optional properties:
 - cd-gpios: card detect gpio, with zero flags.
 
-If your board don't support these gpios then don't pass the entry.
-
 Example:
 
 	sdhci@fc000000 {
 		compatible = "st,spear300-sdhci";
 		reg = <0xfc000000 0x1000>;
-
-		cd-gpios = <&gpio0 6 0>
+		cd-gpios = <&gpio0 6 0>;
 	};
diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index ecad282741d6..6be89c032deb 100644
--- a/drivers/mmc/host/sdhci-spear.c
+++ b/drivers/mmc/host/sdhci-spear.c
@@ -140,7 +140,7 @@ static int __devinit sdhci_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	ret = clk_enable(sdhci->clk);
+	ret = clk_prepare_enable(sdhci->clk);
 	if (ret) {
 		dev_dbg(&pdev->dev, "Error enabling clock\n");
 		goto put_clk;
@@ -260,7 +260,7 @@ set_drvdata:
 free_host:
 	sdhci_free_host(host);
 disable_clk:
-	clk_disable(sdhci->clk);
+	clk_disable_unprepare(sdhci->clk);
 put_clk:
 	clk_put(sdhci->clk);
 err:
@@ -282,7 +282,7 @@ static int __devexit sdhci_remove(struct platform_device *pdev)
 
 	sdhci_remove_host(host, dead);
 	sdhci_free_host(host);
-	clk_disable(sdhci->clk);
+	clk_disable_unprepare(sdhci->clk);
 	clk_put(sdhci->clk);
 
 	return 0;
@@ -297,7 +297,7 @@ static int sdhci_suspend(struct device *dev)
 
 	ret = sdhci_suspend_host(host);
 	if (!ret)
-		clk_disable(sdhci->clk);
+		clk_disable_unprepare(sdhci->clk);
 
 	return ret;
 }
@@ -308,7 +308,7 @@ static int sdhci_resume(struct device *dev)
 	struct spear_sdhci *sdhci = dev_get_platdata(dev);
 	int ret;
 
-	ret = clk_enable(sdhci->clk);
+	ret = clk_prepare_enable(sdhci->clk);
 	if (ret) {
 		dev_dbg(dev, "Resume: Error enabling clock\n");
 		return ret;