iio: accel: fxls8962af: add padding to regmap for SPI

Add missing don't care padding between address and
data for SPI transfers

Fixes: a3e0b518 ("iio: accel: add support for FXLS8962AF/FXLS8964AF accelerometers")
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20211220125144.3630539-1-sean@geanix.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/accel/fxls8962af-core.c

@@ -173,12 +173,20 @@ struct fxls8962af_data {
 	u16 upper_thres;
 };
 
-const struct regmap_config fxls8962af_regmap_conf = {
+const struct regmap_config fxls8962af_i2c_regmap_conf = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = FXLS8962AF_MAX_REG,
 };
-EXPORT_SYMBOL_GPL(fxls8962af_regmap_conf);
+EXPORT_SYMBOL_GPL(fxls8962af_i2c_regmap_conf);
+
+const struct regmap_config fxls8962af_spi_regmap_conf = {
+	.reg_bits = 8,
+	.pad_bits = 8,
+	.val_bits = 8,
+	.max_register = FXLS8962AF_MAX_REG,
+};
+EXPORT_SYMBOL_GPL(fxls8962af_spi_regmap_conf);
 
 enum {
 	fxls8962af_idx_x,

drivers/iio/accel/fxls8962af-i2c.c

@@ -18,7 +18,7 @@ static int fxls8962af_probe(struct i2c_client *client)
 {
 	struct regmap *regmap;
 
-	regmap = devm_regmap_init_i2c(client, &fxls8962af_regmap_conf);
+	regmap = devm_regmap_init_i2c(client, &fxls8962af_i2c_regmap_conf);
 	if (IS_ERR(regmap)) {
 		dev_err(&client->dev, "Failed to initialize i2c regmap\n");
 		return PTR_ERR(regmap);

drivers/iio/accel/fxls8962af-spi.c

@@ -18,7 +18,7 @@ static int fxls8962af_probe(struct spi_device *spi)
 {
 	struct regmap *regmap;
 
-	regmap = devm_regmap_init_spi(spi, &fxls8962af_regmap_conf);
+	regmap = devm_regmap_init_spi(spi, &fxls8962af_spi_regmap_conf);
 	if (IS_ERR(regmap)) {
 		dev_err(&spi->dev, "Failed to initialize spi regmap\n");
 		return PTR_ERR(regmap);

drivers/iio/accel/fxls8962af.h

@@ -17,6 +17,7 @@ int fxls8962af_core_probe(struct device *dev, struct regmap *regmap, int irq);
 int fxls8962af_core_remove(struct device *dev);
 
 extern const struct dev_pm_ops fxls8962af_pm_ops;
-extern const struct regmap_config fxls8962af_regmap_conf;
+extern const struct regmap_config fxls8962af_i2c_regmap_conf;
+extern const struct regmap_config fxls8962af_spi_regmap_conf;
 
 #endif				/* _FXLS8962AF_H_ */