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iio: sx9310: Support ACPI property 

Use device_property_read_... to support both device tree and ACPI
bindings.
Simplify the logic for reading "combined-sensors" array, as we assume
it has been vetted at firmware build time.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210728181757.187627-1-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Gwendal Grignou 2021-07-28 11:17:57 -07:00 committed by Jonathan Cameron
parent 9491b9177f
commit 7a3605bef8
1 changed files with 16 additions and 32 deletions
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48
drivers/iio/proximity/sx9310.c
View File

@ -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>
@ -1221,10 +1222,9 @@ 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;
@ -1232,39 +1232,23 @@ 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));
if (count > 0 && count <= ARRAY_SIZE(combined)) {
ret = of_property_read_u32_array(np, "semtech,combined-sensors",
combined, count);
if (ret)
break;
} else {
/*
* Either the property does not exist in the DT or the
* number of entries is incorrect.
*/
count = device_property_count_u32(dev, "semtech,combined-sensors");
if (count < 0 || count > ARRAY_SIZE(combined))
break;
}
for (i = 0; i < count; i++) {
if (combined[i] >= SX9310_NUM_CHANNELS) {
/* Invalid sensor (invalid DT). */
break;
}
ret = device_property_read_u32_array(dev, "semtech,combined-sensors",
combined, count);
if (ret)
break;
for (i = 0; i < count; i++)
comb_mask |= BIT(combined[i]);
}
if (i < count)
break;
reg_def->def &= ~SX9310_REG_PROX_CTRL2_COMBMODE_MASK;
if (comb_mask == (BIT(3) | BIT(2) | BIT(1) | BIT(0)))
@ -1278,7 +1262,7 @@ 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;
@ -1302,7 +1286,7 @@ 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);
@ -1312,7 +1296,7 @@ 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);
@ -1325,7 +1309,7 @@ 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;
@ -1361,7 +1345,7 @@ 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(&indio_dev->dev, i, &tmp);
ret = regmap_write(data->regmap, initval->reg, initval->def);
if (ret)
return ret;