iio: adc: at91-sama5d2_adc: convert to device properties

Make the conversion to firmware agnostic device properties. As part of
the conversion the IIO inkern interface 'of_xlate()' is also converted to
'fwnode_xlate()'. The goal is to completely drop 'of_xlate' and hence OF
dependencies from IIO.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220715122903.332535-10-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 8d8aa96914991635a016c401e334e6af14eed96e..4294d6539cdb36439691aeb0c30850af3aea96f6 100644 (file)
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -16,8 +16,9 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/sched.h>
 #include <linux/units.h>
 #include <linux/wait.h>
@@ -763,8 +764,8 @@ at91_adc_chan_get(struct iio_dev *indio_dev, int chan)
        return indio_dev->channels + index;
 }
 
-static inline int at91_adc_of_xlate(struct iio_dev *indio_dev,
-                                   const struct of_phandle_args *iiospec)
+static inline int at91_adc_fwnode_xlate(struct iio_dev *indio_dev,
+                                       const struct fwnode_reference_args *iiospec)
 {
        return at91_adc_chan_xlate(indio_dev, iiospec->args[0]);
 }
@@ -2213,7 +2214,7 @@ static const struct iio_info at91_adc_info = {
        .read_raw = &at91_adc_read_raw,
        .write_raw = &at91_adc_write_raw,
        .update_scan_mode = &at91_adc_update_scan_mode,
-       .of_xlate = &at91_adc_of_xlate,
+       .fwnode_xlate = &at91_adc_fwnode_xlate,
        .hwfifo_set_watermark = &at91_adc_set_watermark,
 };
 
@@ -2306,6 +2307,7 @@ free_buf:
 
 static int at91_adc_probe(struct platform_device *pdev)
 {
+       struct device *dev = &pdev->dev;
        struct iio_dev *indio_dev;
        struct at91_adc_state *st;
        struct resource *res;
@@ -2319,7 +2321,7 @@ static int at91_adc_probe(struct platform_device *pdev)
        st = iio_priv(indio_dev);
        st->indio_dev = indio_dev;
 
-       st->soc_info.platform = of_device_get_match_data(&pdev->dev);
+       st->soc_info.platform = device_get_match_data(dev);
 
        ret = at91_adc_temp_sensor_init(st, &pdev->dev);
        /* Don't register temperature channel if initialization failed. */
@@ -2343,34 +2345,32 @@ static int at91_adc_probe(struct platform_device *pdev)
 
        st->oversampling_ratio = 1;
 
-       ret = of_property_read_u32(pdev->dev.of_node,
-                                  "atmel,min-sample-rate-hz",
-                                  &st->soc_info.min_sample_rate);
+       ret = device_property_read_u32(dev, "atmel,min-sample-rate-hz",
+                                      &st->soc_info.min_sample_rate);
        if (ret) {
                dev_err(&pdev->dev,
                        "invalid or missing value for atmel,min-sample-rate-hz\n");
                return ret;
        }
 
-       ret = of_property_read_u32(pdev->dev.of_node,
-                                  "atmel,max-sample-rate-hz",
-                                  &st->soc_info.max_sample_rate);
+       ret = device_property_read_u32(dev, "atmel,max-sample-rate-hz",
+                                      &st->soc_info.max_sample_rate);
        if (ret) {
                dev_err(&pdev->dev,
                        "invalid or missing value for atmel,max-sample-rate-hz\n");
                return ret;
        }
 
-       ret = of_property_read_u32(pdev->dev.of_node, "atmel,startup-time-ms",
-                                  &st->soc_info.startup_time);
+       ret = device_property_read_u32(dev, "atmel,startup-time-ms",
+                                      &st->soc_info.startup_time);
        if (ret) {
                dev_err(&pdev->dev,
                        "invalid or missing value for atmel,startup-time-ms\n");
                return ret;
        }
 
-       ret = of_property_read_u32(pdev->dev.of_node,
-                                  "atmel,trigger-edge-type", &edge_type);
+       ret = device_property_read_u32(dev, "atmel,trigger-edge-type",
+                                      &edge_type);
        if (ret) {
                dev_dbg(&pdev->dev,
                        "atmel,trigger-edge-type not specified, only software trigger available\n");