From: Jagath Jog J <jagathjog1996@gmail.com>
To: jic23@kernel.org, lars@metafoo.de, andy.shevchenko@gmail.com,
sst@poczta.fm, robh+dt@kernel.org
Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 2/4] iio: potentiometer: Add available functionality
Date: Mon, 14 Feb 2022 09:06:18 +0530 [thread overview]
Message-ID: <20220214033620.4059-3-jagathjog1996@gmail.com> (raw)
In-Reply-To: <20220214033620.4059-1-jagathjog1996@gmail.com>
Adding available functionality for ds1803 driver which
will show the minimum, step and maximum values
it can accepts through sysfs entry.
Signed-off-by: Jagath Jog J <jagathjog1996@gmail.com>
---
drivers/iio/potentiometer/ds1803.c | 38 ++++++++++++++++++++++--------
1 file changed, 28 insertions(+), 10 deletions(-)
diff --git a/drivers/iio/potentiometer/ds1803.c b/drivers/iio/potentiometer/ds1803.c
index 3481dd460525..bccb9ccac931 100644
--- a/drivers/iio/potentiometer/ds1803.c
+++ b/drivers/iio/potentiometer/ds1803.c
@@ -27,12 +27,13 @@ enum ds1803_type {
struct ds1803_cfg {
int kohms;
+ int avail[3];
};
static const struct ds1803_cfg ds1803_cfg[] = {
- [DS1803_010] = { .kohms = 10, },
- [DS1803_050] = { .kohms = 50, },
- [DS1803_100] = { .kohms = 100, },
+ [DS1803_010] = { .avail = { 0, 1, 255 }, .kohms = 10, },
+ [DS1803_050] = { .avail = { 0, 1, 255 }, .kohms = 50, },
+ [DS1803_100] = { .avail = { 0, 1, 255 }, .kohms = 100, },
};
struct ds1803_data {
@@ -40,13 +41,14 @@ struct ds1803_data {
const struct ds1803_cfg *cfg;
};
-#define DS1803_CHANNEL(ch) { \
- .type = IIO_RESISTANCE, \
- .indexed = 1, \
- .output = 1, \
- .channel = (ch), \
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
- .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+#define DS1803_CHANNEL(ch) { \
+ .type = IIO_RESISTANCE, \
+ .indexed = 1, \
+ .output = 1, \
+ .channel = (ch), \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ .info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_RAW), \
}
static const struct iio_chan_spec ds1803_channels[] = {
@@ -104,9 +106,25 @@ static int ds1803_write_raw(struct iio_dev *indio_dev,
return i2c_smbus_write_byte_data(data->client, DS1803_WRITE(pot), val);
}
+static int ds1803_read_avail(struct iio_dev *indio_dev, struct iio_chan_spec const *chan,
+ const int **vals, int *type, int *length, long mask)
+{
+ struct ds1803_data *data = iio_priv(indio_dev);
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ *vals = data->cfg->avail;
+ *length = ARRAY_SIZE(data->cfg->avail);
+ *type = IIO_VAL_INT;
+ return IIO_AVAIL_RANGE;
+ }
+ return -EINVAL;
+}
+
static const struct iio_info ds1803_info = {
.read_raw = ds1803_read_raw,
.write_raw = ds1803_write_raw,
+ .read_avail = ds1803_read_avail,
};
static int ds1803_probe(struct i2c_client *client,
--
2.17.1
next prev parent reply other threads:[~2022-02-14 3:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-14 3:36 [PATCH v2 0/4] iio: potentiometer: Add support for DS3502 Jagath Jog J
2022-02-14 3:36 ` [PATCH v2 1/4] iio: potentiometer: Alignment to match the open parenthesis Jagath Jog J
2022-02-14 11:14 ` Andy Shevchenko
2022-02-14 3:36 ` Jagath Jog J [this message]
2022-02-14 11:22 ` [PATCH v2 2/4] iio: potentiometer: Add available functionality Andy Shevchenko
2022-02-14 3:36 ` [PATCH v2 3/4] iio: potentiometer: Add support for Maxim DS3502 Jagath Jog J
2022-02-14 11:32 ` Andy Shevchenko
2022-02-14 19:52 ` Jagath Jog J
2022-02-18 12:24 ` Jonathan Cameron
2022-02-14 3:36 ` [PATCH v2 4/4] dt-bindings: iio: potentiometer: Add Maxim DS3502 in trivial-devices Jagath Jog J
2022-02-14 11:32 ` Andy Shevchenko
2022-02-15 22:56 ` Rob Herring
2022-02-14 11:33 ` [PATCH v2 0/4] iio: potentiometer: Add support for DS3502 Andy Shevchenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220214033620.4059-3-jagathjog1996@gmail.com \
--to=jagathjog1996@gmail.com \
--cc=andy.shevchenko@gmail.com \
--cc=devicetree@vger.kernel.org \
--cc=jic23@kernel.org \
--cc=lars@metafoo.de \
--cc=linux-iio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=robh+dt@kernel.org \
--cc=sst@poczta.fm \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).