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mtd: spi-nor: atmel-quadspi: add suspend/resume hooks

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Implement suspend/resume hooks.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Claudiu Beznea 2018-06-04 11:46:33 +03:00 committed by Boris Brezillon
parent 38ebbe2b72
commit de217c1cca
1 changed files with 21 additions and 0 deletions
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21
drivers/mtd/spi-nor/atmel-quadspi.c
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@ -737,6 +737,26 @@ static int atmel_qspi_remove(struct platform_device *pdev)
return 0; return 0;
} }
static int __maybe_unused atmel_qspi_suspend(struct device *dev)
{
struct atmel_qspi *aq = dev_get_drvdata(dev);
clk_disable_unprepare(aq->clk);
return 0;
}
static int __maybe_unused atmel_qspi_resume(struct device *dev)
{
struct atmel_qspi *aq = dev_get_drvdata(dev);
clk_prepare_enable(aq->clk);
return atmel_qspi_init(aq);
}
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[] = { static const struct of_device_id atmel_qspi_dt_ids[] = {
{ .compatible = "atmel,sama5d2-qspi" }, { .compatible = "atmel,sama5d2-qspi" },
@ -749,6 +769,7 @@ static struct platform_driver atmel_qspi_driver = {
.driver = { .driver = {
.name = "atmel_qspi", .name = "atmel_qspi",
.of_match_table = atmel_qspi_dt_ids, .of_match_table = atmel_qspi_dt_ids,
.pm = &atmel_qspi_pm_ops,
}, },
.probe = atmel_qspi_probe, .probe = atmel_qspi_probe,
.remove = atmel_qspi_remove, .remove = atmel_qspi_remove,