spi: omap2-mcspi: add pinctrl support

Adds pinctrl support to support OMAP platforms that boot from DT
and rely on pinctrl support to set pinmuxes.

Signed-off-by: Matt Porter <mporter@ti.com>
Acked-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index 5560b708e6286ca3333b6691c6a813246c258668..9926f2784bbaf0f643838e79efb5e68c87dd2944 100644 (file)
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -38,6 +38,8 @@
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/err.h>
 
 #include <linux/spi/spi.h>
 
@@ -1148,6 +1150,7 @@ static int __devinit omap2_mcspi_probe(struct platform_device *pdev)
        static int              bus_num = 1;
        struct device_node      *node = pdev->dev.of_node;
        const struct of_device_id *match;
+       struct pinctrl *pinctrl;
 
        master = spi_alloc_master(&pdev->dev, sizeof *mcspi);
        if (master == NULL) {
@@ -1243,6 +1246,11 @@ static int __devinit omap2_mcspi_probe(struct platform_device *pdev)
        if (status < 0)
                goto dma_chnl_free;
 
+       pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+       if (IS_ERR(pinctrl))
+               dev_warn(&pdev->dev,
+                       "pins are not configured from the driver\n");
+
        pm_runtime_use_autosuspend(&pdev->dev);
        pm_runtime_set_autosuspend_delay(&pdev->dev, SPI_AUTOSUSPEND_TIMEOUT);
        pm_runtime_enable(&pdev->dev);