linux-kernel - [PATCH 3/5 V2] staging: iio: adc: ad7192: removed spi_device

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Date:   Wed, 5 Feb 2020 19:15:09 +0200
From:   Alexandru Tachici <alexandru.tachici@...log.com>
To:     <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <jic23@...nel.org>,
        Alexandru Tachici <alexandru.tachici@...log.com>
Subject: [PATCH 3/5 V2] staging: iio: adc: ad7192: removed spi_device_id

This patch removes spi_device_id table and moves the
init data (id of the chip) in the .data field
of of_device_id table.

Signed-off-by: Alexandru Tachici <alexandru.tachici@...log.com>
---
 drivers/staging/iio/adc/ad7192.c | 29 +++++++++++++----------------
 1 file changed, 13 insertions(+), 16 deletions(-)

diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c
index 8f2fa154876a..e75d808a2f41 100644
--- a/drivers/staging/iio/adc/ad7192.c
+++ b/drivers/staging/iio/adc/ad7192.c
@@ -16,6 +16,7 @@
 #include <linux/err.h>
 #include <linux/sched.h>
 #include <linux/delay.h>
+#include <linux/of_device.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -876,8 +877,11 @@ static int ad7192_channels_config(struct iio_dev *indio_dev)
 	return 0;
 }
 
+static const struct of_device_id ad7192_of_match[];
+
 static int ad7192_probe(struct spi_device *spi)
 {
+	const struct of_device_id *match;
 	struct ad7192_state *st;
 	struct iio_dev *indio_dev;
 	int ret, voltage_uv = 0;
@@ -927,8 +931,12 @@ static int ad7192_probe(struct spi_device *spi)
 		goto error_disable_avdd;
 	}
 
+	match = of_match_device(ad7192_of_match, &spi->dev);
+	if (!match)
+		return -EINVAL;
+
 	spi_set_drvdata(spi, indio_dev);
-	st->devid = spi_get_device_id(spi)->driver_data;
+	st->devid = (unsigned long)match->data;
 	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -1010,21 +1018,11 @@ static int ad7192_remove(struct spi_device *spi)
 	return 0;
 }
 
-static const struct spi_device_id ad7192_id[] = {
-	{"ad7190", ID_AD7190},
-	{"ad7192", ID_AD7192},
-	{"ad7193", ID_AD7193},
-	{"ad7195", ID_AD7195},
-	{}
-};
-
-MODULE_DEVICE_TABLE(spi, ad7192_id);
-
 static const struct of_device_id ad7192_of_match[] = {
-	{ .compatible = "adi,ad7190" },
-	{ .compatible = "adi,ad7192" },
-	{ .compatible = "adi,ad7193" },
-	{ .compatible = "adi,ad7195" },
+	{ .compatible = "adi,ad7190", .data = (void *)ID_AD7190},
+	{ .compatible = "adi,ad7192", .data = (void *)ID_AD7192 },
+	{ .compatible = "adi,ad7193", .data = (void *)ID_AD7193 },
+	{ .compatible = "adi,ad7195", .data = (void *)ID_AD7195 },
 	{}
 };
 
@@ -1037,7 +1035,6 @@ static struct spi_driver ad7192_driver = {
 	},
 	.probe		= ad7192_probe,
 	.remove		= ad7192_remove,
-	.id_table	= ad7192_id,
 };
 module_spi_driver(ad7192_driver);
 
-- 
2.20.1