mmc: sdhci-dove: Prepare for common clock framework
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>
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@ -20,11 +20,17 @@
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*/
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#include <linux/io.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/mmc/host.h>
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#include "sdhci-pltfm.h"
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struct sdhci_dove_priv {
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struct clk *clk;
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};
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static u16 sdhci_dove_readw(struct sdhci_host *host, int reg)
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{
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u16 ret;
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@ -72,11 +78,51 @@ static struct sdhci_pltfm_data sdhci_dove_pdata = {
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static int __devinit sdhci_dove_probe(struct platform_device *pdev)
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{
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return sdhci_pltfm_register(pdev, &sdhci_dove_pdata);
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struct sdhci_host *host;
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struct sdhci_pltfm_host *pltfm_host;
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struct sdhci_dove_priv *priv;
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int ret;
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ret = sdhci_pltfm_register(pdev, &sdhci_dove_pdata);
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if (ret)
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goto sdhci_dove_register_fail;
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priv = devm_kzalloc(&pdev->dev, sizeof(struct sdhci_dove_priv),
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GFP_KERNEL);
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if (!priv) {
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dev_err(&pdev->dev, "unable to allocate private data");
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ret = -ENOMEM;
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goto sdhci_dove_allocate_fail;
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}
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host = platform_get_drvdata(pdev);
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pltfm_host = sdhci_priv(host);
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pltfm_host->priv = priv;
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priv->clk = clk_get(&pdev->dev, NULL);
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if (!IS_ERR(priv->clk))
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clk_prepare_enable(priv->clk);
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return 0;
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sdhci_dove_allocate_fail:
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sdhci_pltfm_unregister(pdev);
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sdhci_dove_register_fail:
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return ret;
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}
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static int __devexit sdhci_dove_remove(struct platform_device *pdev)
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{
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struct sdhci_host *host = platform_get_drvdata(pdev);
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct sdhci_dove_priv *priv = pltfm_host->priv;
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if (priv->clk) {
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if (!IS_ERR(priv->clk)) {
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clk_disable_unprepare(priv->clk);
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clk_put(priv->clk);
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}
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devm_kfree(&pdev->dev, priv->clk);
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}
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return sdhci_pltfm_unregister(pdev);
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}
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