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Diffstat (limited to 'drivers/iio/adc/qcom-pm8xxx-xoadc.c')
-rw-r--r--drivers/iio/adc/qcom-pm8xxx-xoadc.c90
1 files changed, 43 insertions, 47 deletions
diff --git a/drivers/iio/adc/qcom-pm8xxx-xoadc.c b/drivers/iio/adc/qcom-pm8xxx-xoadc.c
index c599ffa45a04..eb424496ee1d 100644
--- a/drivers/iio/adc/qcom-pm8xxx-xoadc.c
+++ b/drivers/iio/adc/qcom-pm8xxx-xoadc.c
@@ -10,19 +10,18 @@
* Author: Linus Walleij <linus.walleij@linaro.org>
*/
+#include <linux/iio/adc/qcom-vadc-common.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/regulator/consumer.h>
-#include "qcom-vadc-common.h"
-
/*
* Definitions for the "user processor" registers lifted from the v3.4
* Qualcomm tree. Their kernel has two out-of-tree drivers for the ADC:
@@ -120,7 +119,7 @@
#define ADC_ARB_USRP_DATA0 0x19D
#define ADC_ARB_USRP_DATA1 0x19C
-/**
+/*
* Physical channels which MUST exist on all PM variants in order to provide
* proper reference points for calibration.
*
@@ -176,7 +175,7 @@ struct xoadc_channel {
const char *datasheet_name;
u8 pre_scale_mux:2;
u8 amux_channel:4;
- const struct vadc_prescale_ratio prescale;
+ const struct u32_fract prescale;
enum iio_chan_type type;
enum vadc_scale_fn_type scale_fn_type;
u8 amux_ip_rsv:3;
@@ -219,7 +218,9 @@ struct xoadc_variant {
.datasheet_name = __stringify(_dname), \
.pre_scale_mux = _presmux, \
.amux_channel = _amux, \
- .prescale = { .num = _prenum, .den = _preden }, \
+ .prescale = { \
+ .numerator = _prenum, .denominator = _preden, \
+ }, \
.type = _type, \
.scale_fn_type = _scale, \
.amux_ip_rsv = _amip, \
@@ -388,6 +389,7 @@ struct pm8xxx_chan_info {
* struct pm8xxx_xoadc - state container for the XOADC
* @dev: pointer to device
* @map: regmap to access registers
+ * @variant: XOADC variant characteristics
* @vref: reference voltage regulator
* characteristics of the channels, and sensible default settings
* @nchans: number of channels, configured by the device tree
@@ -692,8 +694,8 @@ static int pm8xxx_read_raw(struct iio_dev *indio_dev,
}
}
-static int pm8xxx_of_xlate(struct iio_dev *indio_dev,
- const struct of_phandle_args *iiospec)
+static int pm8xxx_fwnode_xlate(struct iio_dev *indio_dev,
+ const struct fwnode_reference_args *iiospec)
{
struct pm8xxx_xoadc *adc = iio_priv(indio_dev);
u8 pre_scale_mux;
@@ -704,10 +706,10 @@ static int pm8xxx_of_xlate(struct iio_dev *indio_dev,
* First cell is prescaler or premux, second cell is analog
* mux.
*/
- if (iiospec->args_count != 2) {
- dev_err(&indio_dev->dev, "wrong number of arguments for %pOFn need 2 got %d\n",
- iiospec->np,
- iiospec->args_count);
+ if (iiospec->nargs != 2) {
+ dev_err(&indio_dev->dev, "wrong number of arguments for %pfwP need 2 got %d\n",
+ iiospec->fwnode,
+ iiospec->nargs);
return -EINVAL;
}
pre_scale_mux = (u8)iiospec->args[0];
@@ -725,34 +727,34 @@ static int pm8xxx_of_xlate(struct iio_dev *indio_dev,
}
static const struct iio_info pm8xxx_xoadc_info = {
- .of_xlate = pm8xxx_of_xlate,
+ .fwnode_xlate = pm8xxx_fwnode_xlate,
.read_raw = pm8xxx_read_raw,
};
static int pm8xxx_xoadc_parse_channel(struct device *dev,
- struct device_node *np,
+ struct fwnode_handle *fwnode,
const struct xoadc_channel *hw_channels,
struct iio_chan_spec *iio_chan,
struct pm8xxx_chan_info *ch)
{
- const char *name = np->name;
+ const char *name = fwnode_get_name(fwnode);
const struct xoadc_channel *hwchan;
- u32 pre_scale_mux, amux_channel;
+ u32 pre_scale_mux, amux_channel, reg[2];
u32 rsv, dec;
int ret;
int chid;
- ret = of_property_read_u32_index(np, "reg", 0, &pre_scale_mux);
+ ret = fwnode_property_read_u32_array(fwnode, "reg", reg,
+ ARRAY_SIZE(reg));
if (ret) {
- dev_err(dev, "invalid pre scale/mux number %s\n", name);
- return ret;
- }
- ret = of_property_read_u32_index(np, "reg", 1, &amux_channel);
- if (ret) {
- dev_err(dev, "invalid amux channel number %s\n", name);
+ dev_err(dev, "invalid pre scale/mux or amux channel number %s\n",
+ name);
return ret;
}
+ pre_scale_mux = reg[0];
+ amux_channel = reg[1];
+
/* Find the right channel setting */
chid = 0;
hwchan = &hw_channels[0];
@@ -776,7 +778,7 @@ static int pm8xxx_xoadc_parse_channel(struct device *dev,
/* Everyone seems to use default ("type 2") decimation */
ch->decimation = VADC_DEF_DECIMATION;
- if (!of_property_read_u32(np, "qcom,ratiometric", &rsv)) {
+ if (!fwnode_property_read_u32(fwnode, "qcom,ratiometric", &rsv)) {
ch->calibration = VADC_CALIB_RATIOMETRIC;
if (rsv > XOADC_RSV_MAX) {
dev_err(dev, "%s too large RSV value %d\n", name, rsv);
@@ -789,7 +791,7 @@ static int pm8xxx_xoadc_parse_channel(struct device *dev,
}
/* Optional decimation, if omitted we use the default */
- ret = of_property_read_u32(np, "qcom,decimation", &dec);
+ ret = fwnode_property_read_u32(fwnode, "qcom,decimation", &dec);
if (!ret) {
ret = qcom_vadc_decimation_from_dt(dec);
if (ret < 0) {
@@ -809,25 +811,23 @@ static int pm8xxx_xoadc_parse_channel(struct device *dev,
BIT(IIO_CHAN_INFO_PROCESSED);
iio_chan->indexed = 1;
- dev_dbg(dev, "channel [PRESCALE/MUX: %02x AMUX: %02x] \"%s\" "
- "ref voltage: %d, decimation %d "
- "prescale %d/%d, scale function %d\n",
+ dev_dbg(dev,
+ "channel [PRESCALE/MUX: %02x AMUX: %02x] \"%s\" ref voltage: %d, decimation %d prescale %d/%d, scale function %d\n",
hwchan->pre_scale_mux, hwchan->amux_channel, ch->name,
- ch->amux_ip_rsv, ch->decimation, hwchan->prescale.num,
- hwchan->prescale.den, hwchan->scale_fn_type);
+ ch->amux_ip_rsv, ch->decimation, hwchan->prescale.numerator,
+ hwchan->prescale.denominator, hwchan->scale_fn_type);
return 0;
}
-static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc,
- struct device_node *np)
+static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc)
{
- struct device_node *child;
+ struct fwnode_handle *child;
struct pm8xxx_chan_info *ch;
int ret;
int i;
- adc->nchans = of_get_available_child_count(np);
+ adc->nchans = device_get_child_node_count(adc->dev);
if (!adc->nchans) {
dev_err(adc->dev, "no channel children\n");
return -ENODEV;
@@ -845,14 +845,14 @@ static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc,
return -ENOMEM;
i = 0;
- for_each_available_child_of_node(np, child) {
+ device_for_each_child_node(adc->dev, child) {
ch = &adc->chans[i];
ret = pm8xxx_xoadc_parse_channel(adc->dev, child,
adc->variant->channels,
&adc->iio_chans[i],
ch);
if (ret) {
- of_node_put(child);
+ fwnode_handle_put(child);
return ret;
}
i++;
@@ -883,12 +883,11 @@ static int pm8xxx_xoadc_probe(struct platform_device *pdev)
const struct xoadc_variant *variant;
struct pm8xxx_xoadc *adc;
struct iio_dev *indio_dev;
- struct device_node *np = pdev->dev.of_node;
struct regmap *map;
struct device *dev = &pdev->dev;
int ret;
- variant = of_device_get_match_data(dev);
+ variant = device_get_match_data(dev);
if (!variant)
return -ENODEV;
@@ -903,23 +902,22 @@ static int pm8xxx_xoadc_probe(struct platform_device *pdev)
init_completion(&adc->complete);
mutex_init(&adc->lock);
- ret = pm8xxx_xoadc_parse_channels(adc, np);
+ ret = pm8xxx_xoadc_parse_channels(adc);
if (ret)
return ret;
map = dev_get_regmap(dev->parent, NULL);
if (!map) {
dev_err(dev, "parent regmap unavailable.\n");
- return -ENXIO;
+ return -ENODEV;
}
adc->map = map;
/* Bring up regulator */
adc->vref = devm_regulator_get(dev, "xoadc-ref");
- if (IS_ERR(adc->vref)) {
- dev_err(dev, "failed to get XOADC VREF regulator\n");
- return PTR_ERR(adc->vref);
- }
+ if (IS_ERR(adc->vref))
+ return dev_err_probe(dev, PTR_ERR(adc->vref),
+ "failed to get XOADC VREF regulator\n");
ret = regulator_enable(adc->vref);
if (ret) {
dev_err(dev, "failed to enable XOADC VREF regulator\n");
@@ -933,8 +931,6 @@ static int pm8xxx_xoadc_probe(struct platform_device *pdev)
goto out_disable_vref;
}
- indio_dev->dev.parent = dev;
- indio_dev->dev.of_node = np;
indio_dev->name = variant->name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &pm8xxx_xoadc_info;
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