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mmc: bcm2835: add suspend/resume pm support

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Add a minimalistic suspend/resume PM support.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Message-ID: <20241202115140.33492-1-wahrenst@gmx.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Stefan Wahren
2024-12-02 12:51:40 +01:00
committed by Ulf Hansson
parent 634717a2b8
commit aee2ae1423
1 changed files with 20 additions and 0 deletions
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drivers/mmc/host/bcm2835.c
+20
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@@ -1343,6 +1343,25 @@ static int bcm2835_add_host(struct bcm2835_host *host)
return 0;
}
static int bcm2835_suspend(struct device *dev)
{
struct bcm2835_host *host = dev_get_drvdata(dev);
clk_disable_unprepare(host->clk);
return 0;
}
static int bcm2835_resume(struct device *dev)
{
struct bcm2835_host *host = dev_get_drvdata(dev);
return clk_prepare_enable(host->clk);
}
static DEFINE_SIMPLE_DEV_PM_OPS(bcm2835_pm_ops, bcm2835_suspend,
bcm2835_resume);
static int bcm2835_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -1471,6 +1490,7 @@ static struct platform_driver bcm2835_driver = {
.name = "sdhost-bcm2835",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
.of_match_table = bcm2835_match,
.pm = pm_ptr(&bcm2835_pm_ops),
},
};
module_platform_driver(bcm2835_driver);