[v7,2/2] iio: sx9310: Support ACPI properties

Commit Message

Gwendal Grignou March 26, 2021, 6:46 p.m. UTC

Use device_property_read_uXX to support both device tree and ACPI
bindings when reading the properties we need to configure the SAR
sensor.

Signed-off-by: Gwendal Grignou <[e-mail]>
Reviewed-by: Andy Shevchenko <[e-mail]>
---
 Changes in v7:
 Use proper device object to access properties.
 Verify it works both on machines with device-tree or ACPI bindings.

 Changes in v6:
 Use proper function to gather the number of elements in an array.

 Changes in v5:
 Split in 2 patches, one for fixing access to propery array, the other
 to support ACPI.

 drivers/iio/proximity/sx9310.c | 26 +++++++++++---------------
 1 file changed, 11 insertions(+), 15 deletions(-)

Patch

diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c
index 289c76bb3b024..578d8841c5398 100644
--- a/drivers/iio/proximity/sx9310.c
+++ b/drivers/iio/proximity/sx9310.c
@@ -20,6 +20,7 @@ 
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/pm.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
@@ -1213,10 +1214,9 @@  static int sx9310_init_compensation(struct iio_dev *indio_dev)
 }
 
 static const struct sx9310_reg_default *
-sx9310_get_default_reg(struct sx9310_data *data, int idx,
+sx9310_get_default_reg(struct device *dev, int idx,
 		       struct sx9310_reg_default *reg_def)
 {
-	const struct device_node *np = data->client->dev.of_node;
 	u32 combined[SX9310_NUM_CHANNELS];
 	u32 start = 0, raw = 0, pos = 0;
 	unsigned long comb_mask = 0;
@@ -1224,21 +1224,17 @@  sx9310_get_default_reg(struct sx9310_data *data, int idx,
 	const char *res;
 
 	memcpy(reg_def, &sx9310_default_regs[idx], sizeof(*reg_def));
-	if (!np)
-		return reg_def;
-
 	switch (reg_def->reg) {
 	case SX9310_REG_PROX_CTRL2:
-		if (of_property_read_bool(np, "semtech,cs0-ground")) {
+		if (device_property_read_bool(dev, "semtech,cs0-ground")) {
 			reg_def->def &= ~SX9310_REG_PROX_CTRL2_SHIELDEN_MASK;
 			reg_def->def |= SX9310_REG_PROX_CTRL2_SHIELDEN_GROUND;
 		}
 
-		count = of_property_count_elems_of_size(np, "semtech,combined-sensors",
-							sizeof(u32));
+		count = device_property_count_u32(dev, "semtech,combined-sensors");
 		if (count > 0 && count <= ARRAY_SIZE(combined)) {
-			ret = of_property_read_u32_array(np, "semtech,combined-sensors",
-							 combined, count);
+			ret = device_property_read_u32_array(dev, "semtech,combined-sensors",
+							     combined, count);
 			if (ret)
 				break;
 		} else {
@@ -1270,7 +1266,7 @@  sx9310_get_default_reg(struct sx9310_data *data, int idx,
 
 		break;
 	case SX9310_REG_PROX_CTRL4:
-		ret = of_property_read_string(np, "semtech,resolution", &res);
+		ret = device_property_read_string(dev, "semtech,resolution", &res);
 		if (ret)
 			break;
 
@@ -1294,7 +1290,7 @@  sx9310_get_default_reg(struct sx9310_data *data, int idx,
 
 		break;
 	case SX9310_REG_PROX_CTRL5:
-		ret = of_property_read_u32(np, "semtech,startup-sensor", &start);
+		ret = device_property_read_u32(dev, "semtech,startup-sensor", &start);
 		if (ret) {
 			start = FIELD_GET(SX9310_REG_PROX_CTRL5_STARTUPSENS_MASK,
 					  reg_def->def);
@@ -1304,7 +1300,7 @@  sx9310_get_default_reg(struct sx9310_data *data, int idx,
 		reg_def->def |= FIELD_PREP(SX9310_REG_PROX_CTRL5_STARTUPSENS_MASK,
 					   start);
 
-		ret = of_property_read_u32(np, "semtech,proxraw-strength", &raw);
+		ret = device_property_read_u32(dev, "semtech,proxraw-strength", &raw);
 		if (ret) {
 			raw = FIELD_GET(SX9310_REG_PROX_CTRL5_RAWFILT_MASK,
 					reg_def->def);
@@ -1317,7 +1313,7 @@  sx9310_get_default_reg(struct sx9310_data *data, int idx,
 					   raw);
 		break;
 	case SX9310_REG_PROX_CTRL7:
-		ret = of_property_read_u32(np, "semtech,avg-pos-strength", &pos);
+		ret = device_property_read_u32(dev, "semtech,avg-pos-strength", &pos);
 		if (ret)
 			break;
 
@@ -1353,7 +1349,7 @@  static int sx9310_init_device(struct iio_dev *indio_dev)
 
 	/* Program some sane defaults. */
 	for (i = 0; i < ARRAY_SIZE(sx9310_default_regs); i++) {
-		initval = sx9310_get_default_reg(data, i, &tmp);
+		initval = sx9310_get_default_reg(&data->client->dev, i, &tmp);
 		ret = regmap_write(data->regmap, initval->reg, initval->def);
 		if (ret)
 			return ret;