iio: ti_am335x_adc: remove platform_data support

This patch removes access to platform data mfd_tscadc_board because the
platform is DT only.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

1 files changed, 7 insertions, 14 deletions

diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index b24402cb5432..2868c0c1b7e0 100644
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c
@@ -26,7 +26,6 @@
 #include <linux/of_device.h>
 
 #include <linux/mfd/ti_am335x_tscadc.h>
-#include <linux/platform_data/ti_am335x_adc.h>
 
 struct tiadc_device {
         struct ti_tscadc_dev *mfd_tscadc;
@@ -153,14 +152,12 @@ static int tiadc_probe(struct platform_device *pdev)
 {
         struct iio_dev          *indio_dev;
         struct tiadc_device     *adc_dev;
-        struct ti_tscadc_dev    *tscadc_dev = ti_tscadc_dev_get(pdev);
-        struct mfd_tscadc_board *pdata = tscadc_dev->dev->platform_data;
         struct device_node      *node = pdev->dev.of_node;
         int                     err;
         u32                     val32;
 
-        if (!pdata && !node) {
-                dev_err(&pdev->dev, "Could not find platform data\n");
+        if (!node) {
+                dev_err(&pdev->dev, "Could not find valid DT data.\n");
                 return -EINVAL;
         }
 
@@ -174,15 +171,11 @@ static int tiadc_probe(struct platform_device *pdev)
 
         adc_dev->mfd_tscadc = ti_tscadc_dev_get(pdev);
 
-        if (pdata)
-                adc_dev->channels = pdata->adc_init->adc_channels;
-        else {
-                err = of_property_read_u32(node,
-                                "ti,adc-channels", &val32);
-                if (err < 0)
-                        goto err_free_device;
-                adc_dev->channels = val32;
-        }
+        err = of_property_read_u32(node,
+                        "ti,adc-channels", &val32);
+        if (err < 0)
+                goto err_free_device;
+        adc_dev->channels = val32;
 
         indio_dev->dev.parent = &pdev->dev;
         indio_dev->name = dev_name(&pdev->dev);