[PATCH] spi: sh-msiof: Add spi_master_suspend/spi_master_resume

[Ulrich Hecht <ulrich.hecht+renesas@xxxxxxxxx>]

From: Gaku Inami <gaku.inami.xw@xxxxxxxxxxxxxx>

Add spi_master_suspend(), spi_master_resume() in PM callback since it needs
to start/stop the queue during suspend/resume.

Signed-off-by: Gaku Inami <gaku.inami.xw@xxxxxxxxxxxxxx>
Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@xxxxxxxxxxx>
[uli: simplified code, added pm field to platform driver]
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@xxxxxxxxx>
---
Slightly brushed up port from the BSP; tested to execute on suspend/resume
without breaking anything.

CU
Uli

 drivers/spi/spi-sh-msiof.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index ae086aa..db30aad 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -1415,12 +1415,35 @@ static const struct platform_device_id spi_driver_ids[] = {
 };
 MODULE_DEVICE_TABLE(platform, spi_driver_ids);
 
+#ifdef CONFIG_PM_SLEEP
+static int sh_msiof_spi_suspend(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct sh_msiof_spi_priv *p = platform_get_drvdata(pdev);
+
+	return spi_master_suspend(p->master);
+}
+
+static int sh_msiof_spi_resume(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct sh_msiof_spi_priv *p = platform_get_drvdata(pdev);
+
+	return spi_master_resume(p->master);
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(sh_msiof_spi_pm_ops,
+			 sh_msiof_spi_suspend,
+			 sh_msiof_spi_resume);
+
 static struct platform_driver sh_msiof_spi_drv = {
 	.probe		= sh_msiof_spi_probe,
 	.remove		= sh_msiof_spi_remove,
 	.id_table	= spi_driver_ids,
 	.driver		= {
 		.name		= "spi_sh_msiof",
+		.pm		= &sh_msiof_spi_pm_ops,
 		.of_match_table = of_match_ptr(sh_msiof_match),
 	},
 };
-- 
2.7.4

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