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mmc: sdhci-dove: Prepare for common clock framework

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As mach-dove is moving towards common clock framework prepare
the sdhci driver to grab its clock.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Sebastian Hesselbarth
2012-07-05 12:14:01 +02:00
committed by Chris Ball
parent a9ca1d5477
commit 30b87c60e9
1 changed files with 47 additions and 1 deletions
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48
drivers/mmc/host/sdhci-dove.c
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@@ -20,11 +20,17 @@
*/ */
#include <linux/io.h> #include <linux/io.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/mmc/host.h> #include <linux/mmc/host.h>
#include "sdhci-pltfm.h" #include "sdhci-pltfm.h"
struct sdhci_dove_priv {
struct clk *clk;
};
static u16 sdhci_dove_readw(struct sdhci_host *host, int reg) static u16 sdhci_dove_readw(struct sdhci_host *host, int reg)
{ {
u16 ret; u16 ret;
@@ -72,11 +78,51 @@ static struct sdhci_pltfm_data sdhci_dove_pdata = {
static int __devinit sdhci_dove_probe(struct platform_device *pdev) static int __devinit sdhci_dove_probe(struct platform_device *pdev)
{ {
return sdhci_pltfm_register(pdev, &sdhci_dove_pdata); struct sdhci_host *host;
struct sdhci_pltfm_host *pltfm_host;
struct sdhci_dove_priv *priv;
int ret;
ret = sdhci_pltfm_register(pdev, &sdhci_dove_pdata);
if (ret)
goto sdhci_dove_register_fail;
priv = devm_kzalloc(&pdev->dev, sizeof(struct sdhci_dove_priv),
GFP_KERNEL);
if (!priv) {
dev_err(&pdev->dev, "unable to allocate private data");
ret = -ENOMEM;
goto sdhci_dove_allocate_fail;
}
host = platform_get_drvdata(pdev);
pltfm_host = sdhci_priv(host);
pltfm_host->priv = priv;
priv->clk = clk_get(&pdev->dev, NULL);
if (!IS_ERR(priv->clk))
clk_prepare_enable(priv->clk);
return 0;
sdhci_dove_allocate_fail:
sdhci_pltfm_unregister(pdev);
sdhci_dove_register_fail:
return ret;
} }
static int __devexit sdhci_dove_remove(struct platform_device *pdev) static int __devexit sdhci_dove_remove(struct platform_device *pdev)
{ {
struct sdhci_host *host = platform_get_drvdata(pdev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_dove_priv *priv = pltfm_host->priv;
if (priv->clk) {
if (!IS_ERR(priv->clk)) {
clk_disable_unprepare(priv->clk);
clk_put(priv->clk);
}
devm_kfree(&pdev->dev, priv->clk);
}
return sdhci_pltfm_unregister(pdev); return sdhci_pltfm_unregister(pdev);
} }