Commit b70a7fab authored by Viresh Kumar's avatar Viresh Kumar Committed by Chris Ball

mmc: sdhci-spear: Implement suspend/resume

Suspend/Resume is missing from sdhci-spear driver. This patch adds
support for suspend/resume for this driver.
Signed-off-by: default avatarViresh Kumar <viresh.kumar@st.com>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 597dd9d7
...@@ -21,6 +21,7 @@ ...@@ -21,6 +21,7 @@
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/irq.h> #include <linux/irq.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/mmc/host.h> #include <linux/mmc/host.h>
#include <linux/mmc/sdhci-spear.h> #include <linux/mmc/sdhci-spear.h>
...@@ -271,10 +272,49 @@ static int __devexit sdhci_remove(struct platform_device *pdev) ...@@ -271,10 +272,49 @@ static int __devexit sdhci_remove(struct platform_device *pdev)
return 0; return 0;
} }
#ifdef CONFIG_PM
static int sdhci_suspend(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
struct spear_sdhci *sdhci = dev_get_platdata(dev);
pm_message_t state = {.event = 0};
int ret;
ret = sdhci_suspend_host(host, state);
if (!ret)
clk_disable(sdhci->clk);
return ret;
}
static int sdhci_resume(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
struct spear_sdhci *sdhci = dev_get_platdata(dev);
int ret;
ret = clk_enable(sdhci->clk);
if (ret) {
dev_dbg(dev, "Resume: Error enabling clock\n");
return ret;
}
return sdhci_resume_host(host);
}
const struct dev_pm_ops sdhci_pm_ops = {
.suspend = sdhci_suspend,
.resume = sdhci_resume,
};
#endif
static struct platform_driver sdhci_driver = { static struct platform_driver sdhci_driver = {
.driver = { .driver = {
.name = "sdhci", .name = "sdhci",
.owner = THIS_MODULE, .owner = THIS_MODULE,
#ifdef CONFIG_PM
.pm = &sdhci_pm_ops,
#endif
}, },
.probe = sdhci_probe, .probe = sdhci_probe,
.remove = __devexit_p(sdhci_remove), .remove = __devexit_p(sdhci_remove),
......
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