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iio: adc: ab8500-gpadc: convert to device properties

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Make the conversion to firmware agnostic device properties. As part of
the conversion the IIO inkern interface 'of_xlate()' is also converted to
'fwnode_xlate()'. The goal is to completely drop 'of_xlate' and hence OF
dependencies from IIO.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220715122903.332535-9-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Nuno Sá 2022-07-15 14:28:56 +02:00 committed by Jonathan Cameron
parent 9ac075972b
commit dec7e2c83e
1 changed files with 12 additions and 15 deletions
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27
drivers/iio/adc/ab8500-gpadc.c
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@ -925,8 +925,8 @@ static int ab8500_gpadc_read_raw(struct iio_dev *indio_dev,
return -EINVAL;
}
static int ab8500_gpadc_of_xlate(struct iio_dev *indio_dev,
const struct of_phandle_args *iiospec)
static int ab8500_gpadc_fwnode_xlate(struct iio_dev *indio_dev,
const struct fwnode_reference_args *iiospec)
{
int i;
@ -938,7 +938,7 @@ static int ab8500_gpadc_of_xlate(struct iio_dev *indio_dev,
}
static const struct iio_info ab8500_gpadc_info = {
.of_xlate = ab8500_gpadc_of_xlate,
.fwnode_xlate = ab8500_gpadc_fwnode_xlate,
.read_raw = ab8500_gpadc_read_raw,
};
@ -968,7 +968,7 @@ static int ab8500_gpadc_runtime_resume(struct device *dev)
/**
* ab8500_gpadc_parse_channel() - process devicetree channel configuration
* @dev: pointer to containing device
* @np: device tree node for the channel to configure
* @fwnode: fw node for the channel to configure
* @ch: channel info to fill in
* @iio_chan: IIO channel specification to fill in
*
@ -976,15 +976,15 @@ static int ab8500_gpadc_runtime_resume(struct device *dev)
* and define usage for things like AUX GPADC inputs more precisely.
*/
static int ab8500_gpadc_parse_channel(struct device *dev,
struct device_node *np,
struct fwnode_handle *fwnode,
struct ab8500_gpadc_chan_info *ch,
struct iio_chan_spec *iio_chan)
{
const char *name = np->name;
const char *name = fwnode_get_name(fwnode);
u32 chan;
int ret;
ret = of_property_read_u32(np, "reg", &chan);
ret = fwnode_property_read_u32(fwnode, "reg", &chan);
if (ret) {
dev_err(dev, "invalid channel number %s\n", name);
return ret;
@ -1021,22 +1021,20 @@ static int ab8500_gpadc_parse_channel(struct device *dev,
/**
* ab8500_gpadc_parse_channels() - Parse the GPADC channels from DT
* @gpadc: the GPADC to configure the channels for
* @np: device tree node containing the channel configurations
* @chans: the IIO channels we parsed
* @nchans: the number of IIO channels we parsed
*/
static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
struct device_node *np,
struct iio_chan_spec **chans_parsed,
unsigned int *nchans_parsed)
{
struct device_node *child;
struct fwnode_handle *child;
struct ab8500_gpadc_chan_info *ch;
struct iio_chan_spec *iio_chans;
unsigned int nchans;
int i;
nchans = of_get_available_child_count(np);
nchans = device_get_child_node_count(gpadc->dev);
if (!nchans) {
dev_err(gpadc->dev, "no channel children\n");
return -ENODEV;
@ -1054,7 +1052,7 @@ static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
return -ENOMEM;
i = 0;
for_each_available_child_of_node(np, child) {
device_for_each_child_node(gpadc->dev, child) {
struct iio_chan_spec *iio_chan;
int ret;
@ -1064,7 +1062,7 @@ static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
ret = ab8500_gpadc_parse_channel(gpadc->dev, child, ch,
iio_chan);
if (ret) {
of_node_put(child);
fwnode_handle_put(child);
return ret;
}
i++;
@ -1081,7 +1079,6 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
struct ab8500_gpadc *gpadc;
struct iio_dev *indio_dev;
struct device *dev = &pdev->dev;
struct device_node *np = pdev->dev.of_node;
struct iio_chan_spec *iio_chans;
unsigned int n_iio_chans;
int ret;
@ -1096,7 +1093,7 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
gpadc->dev = dev;
gpadc->ab8500 = dev_get_drvdata(dev->parent);
ret = ab8500_gpadc_parse_channels(gpadc, np, &iio_chans, &n_iio_chans);
ret = ab8500_gpadc_parse_channels(gpadc, &iio_chans, &n_iio_chans);
if (ret)
return ret;