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Subject[PATCH] mtd: atmel-quadspi: add suspend/resume hooks
Date
Implement suspend/resume hooks.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/mtd/spi-nor/atmel-quadspi.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/drivers/mtd/spi-nor/atmel-quadspi.c b/drivers/mtd/spi-nor/atmel-quadspi.c
index 6c5708bacad8..85d7610fb920 100644
--- a/drivers/mtd/spi-nor/atmel-quadspi.c
+++ b/drivers/mtd/spi-nor/atmel-quadspi.c
@@ -737,6 +737,28 @@ static int atmel_qspi_remove(struct platform_device *pdev)
return 0;
}

+#ifdef CONFIG_PM_SLEEP
+static int atmel_qspi_suspend(struct device *dev)
+{
+ struct atmel_qspi *aq = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(aq->clk);
+
+ return 0;
+}
+
+static int atmel_qspi_resume(struct device *dev)
+{
+ struct atmel_qspi *aq = dev_get_drvdata(dev);
+
+ clk_prepare_enable(aq->clk);
+
+ return atmel_qspi_init(aq);
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(atmel_qspi_pm_ops, atmel_qspi_suspend,
+ atmel_qspi_resume);

static const struct of_device_id atmel_qspi_dt_ids[] = {
{ .compatible = "atmel,sama5d2-qspi" },
@@ -749,6 +771,7 @@ static struct platform_driver atmel_qspi_driver = {
.driver = {
.name = "atmel_qspi",
.of_match_table = atmel_qspi_dt_ids,
+ .pm = &atmel_qspi_pm_ops,
},
.probe = atmel_qspi_probe,
.remove = atmel_qspi_remove,
--
2.7.4
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