spi: omap2-mcspi: Add calls for pinctrl state select

This adds calls to pinctrl subsystem in order to switch pin states
on suspend/resume if you provide a "sleep" state in DT.

If no "sleep" state is provided in DT, these calls turn
to NOPs.

Signed-off-by: Pascal Huerst <pascal.huerst@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 11 insertions, 1 deletions

diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index 1f8903d356e5..02aa1d0607b3 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -24,6 +24,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
 #include <linux/omap-dma.h>
+#include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
 #include <linux/err.h>
 #include <linux/clk.h>
@@ -1536,14 +1537,23 @@ static int omap2_mcspi_resume(struct device *dev)
         }
         pm_runtime_mark_last_busy(mcspi->dev);
         pm_runtime_put_autosuspend(mcspi->dev);
-        return 0;
+
+        return pinctrl_pm_select_default_state(dev);
+}
+
+static int omap2_mcspi_suspend(struct device *dev)
+{
+        return pinctrl_pm_select_sleep_state(dev);
 }
+
 #else
+#define omap2_mcspi_suspend     NULL
 #define omap2_mcspi_resume      NULL
 #endif
 
 static const struct dev_pm_ops omap2_mcspi_pm_ops = {
         .resume = omap2_mcspi_resume,
+        .suspend = omap2_mcspi_suspend,
         .runtime_resume = omap_mcspi_runtime_resume,
 };