mmc: sdhci-brcmstb: Add shutdown callback
Shutdown controller and disable it's clocks to insure max power
savings in S5 on systems that leave power on.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Link: https://lore.kernel.org/r/20200113210706.11972-5-alcooperx@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/host/sdhci-brcmstb.c b/drivers/mmc/host/sdhci-brcmstb.c
index 218176b..7ea426b 100644
--- a/drivers/mmc/host/sdhci-brcmstb.c
+++ b/drivers/mmc/host/sdhci-brcmstb.c
@@ -161,6 +161,15 @@ static int sdhci_brcmstb_probe(struct platform_device *pdev)
return res;
}
+static void sdhci_brcmstb_shutdown(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = sdhci_pltfm_unregister(pdev);
+ if (ret)
+ dev_err(&pdev->dev, "failed to shutdown\n");
+}
+
MODULE_DEVICE_TABLE(of, sdhci_brcm_of_match);
static struct platform_driver sdhci_brcmstb_driver = {
@@ -171,6 +180,7 @@ static struct platform_driver sdhci_brcmstb_driver = {
},
.probe = sdhci_brcmstb_probe,
.remove = sdhci_pltfm_unregister,
+ .shutdown = sdhci_brcmstb_shutdown,
};
module_platform_driver(sdhci_brcmstb_driver);
