[4/6] mmc: sdhci-brcmstb: Add shutdown callback

Message ID 20200113210706.11972-5-alcooperx@gmail.com
State New
Headers show
Series
  • [1/6] dt-bindings: mmc: brcm,sdhci-brcmstb: Add support for 7216b0
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Commit Message

Al Cooper Jan. 13, 2020, 9:07 p.m.
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>
---
 drivers/mmc/host/sdhci-brcmstb.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

Patch

diff --git a/drivers/mmc/host/sdhci-brcmstb.c b/drivers/mmc/host/sdhci-brcmstb.c
index 218176b79b6a..7ea426ba5cbc 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);