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From: David Heidelberg via B4 Relay <devnull+david.ixit.cz@kernel.org>
Date: Sat, 08 Mar 2025 21:00:58 +0100
Subject: [PATCH 1/4] iio: light: al3320a: Drop deprecated email for Daniel
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To: Jonathan Cameron <jic23@kernel.org>,
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Cc: Svyatoslav Ryhel <clamor95@gmail.com>,
Robert Eckelmann <longnoserob@gmail.com>, linux-iio@vger.kernel.org,
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X-Original-From: David Heidelberg <david@ixit.cz>
Reply-To: david@ixit.cz
From: David Heidelberg <david@ixit.cz>
He no longer works at Intel.
Signed-off-by: David Heidelberg <david@ixit.cz>
---
drivers/iio/light/al3320a.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iio/light/al3320a.c b/drivers/iio/light/al3320a.c
index 497ea3fe337775b07efdfc56c80beb1aa55e394c..d34a91fdafa0affad4665d995e1=
f66d2aaa0373b 100644
--- a/drivers/iio/light/al3320a.c
+++ b/drivers/iio/light/al3320a.c
@@ -266,6 +266,6 @@ static struct i2c_driver al3320a_driver =3D {
=20
module_i2c_driver(al3320a_driver);
=20
-MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com>");
+MODULE_AUTHOR("Daniel Baluta");
MODULE_DESCRIPTION("AL3320A Ambient Light Sensor driver");
MODULE_LICENSE("GPL v2");
--=20
2.47.2
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From: David Heidelberg via B4 Relay <devnull+david.ixit.cz@kernel.org>
Date: Sat, 08 Mar 2025 21:00:59 +0100
Subject: [PATCH 2/4] iio: light: al3000a: Use DRV_NAME
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Cc: Svyatoslav Ryhel <clamor95@gmail.com>,
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Sync syntax with other similar drivers.
Signed-off-by: David Heidelberg <david@ixit.cz>
---
drivers/iio/light/al3000a.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/iio/light/al3000a.c b/drivers/iio/light/al3000a.c
index e2fbb1270040f43d9f0a97838861818a8eaef813..e1fa4543f336cec61140b5c44d3=
794df1fa485cd 100644
--- a/drivers/iio/light/al3000a.c
+++ b/drivers/iio/light/al3000a.c
@@ -13,6 +13,8 @@
=20
#include <linux/iio/iio.h>
=20
+#define AL3000A_DRV_NAME "al3000a"
+
#define AL3000A_REG_SYSTEM 0x00
#define AL3000A_REG_DATA 0x05
=20
@@ -148,7 +150,7 @@ static int al3000a_probe(struct i2c_client *client)
"failed to get vdd regulator\n");
=20
indio_dev->info =3D &al3000a_info;
- indio_dev->name =3D "al3000a";
+ indio_dev->name =3D AL3000A_DRV_NAME;
indio_dev->channels =3D al3000a_channels;
indio_dev->num_channels =3D ARRAY_SIZE(al3000a_channels);
indio_dev->modes =3D INDIO_DIRECT_MODE;
@@ -195,7 +197,7 @@ MODULE_DEVICE_TABLE(of, al3000a_of_match);
=20
static struct i2c_driver al3000a_driver =3D {
.driver =3D {
- .name =3D "al3000a",
+ .name =3D AL3000A_DRV_NAME,
.of_match_table =3D al3000a_of_match,
.pm =3D pm_sleep_ptr(&al3000a_pm_ops),
},
--=20
2.47.2
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From: David Heidelberg via B4 Relay <devnull+david.ixit.cz@kernel.org>
Date: Sat, 08 Mar 2025 21:01:00 +0100
Subject: [PATCH 3/4] iio: light: al3010: Implement regmap support
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X-Developer-Key: i=david@ixit.cz; a=openpgp;
fpr=D77A09CFEEDC2BBD53A7047460023FC4D3492072
X-Endpoint-Received: by B4 Relay for david@ixit.cz/default with auth_id=355
X-Original-From: David Heidelberg <david@ixit.cz>
Reply-To: david@ixit.cz
From: David Heidelberg <david@ixit.cz>
Modernize and make driver a bit cleaner.
Incorporate most of the feedback given on new AL3000A.
Signed-off-by: David Heidelberg <david@ixit.cz>
---
drivers/iio/light/al3010.c | 95 ++++++++++++++++++++++++++----------------=
----
1 file changed, 53 insertions(+), 42 deletions(-)
diff --git a/drivers/iio/light/al3010.c b/drivers/iio/light/al3010.c
index 7cbb8b203300907a88f4a0ab87da89cabdd087f3..f6ed7246864a777fdb7d3861b74=
f5834e8af4105 100644
--- a/drivers/iio/light/al3010.c
+++ b/drivers/iio/light/al3010.c
@@ -4,7 +4,7 @@
*
* Copyright (c) 2014, Intel Corporation.
* Copyright (c) 2016, Dyna-Image Corp.
- * Copyright (c) 2020, David Heidelberg, Micha=C5=82 Miros=C5=82aw, Dmitry=
Osipenko
+ * Copyright (c) 2020 - 2025, David Heidelberg, Micha=C5=82 Miros=C5=82aw,=
Dmitry Osipenko
*
* IIO driver for AL3010 (7-bit I2C slave address 0x1C).
*
@@ -17,6 +17,7 @@
#include <linux/bitfield.h>
#include <linux/i2c.h>
#include <linux/module.h>
+#include <linux/regmap.h>
#include <linux/mod_devicetable.h>
=20
#include <linux/iio/iio.h>
@@ -46,8 +47,14 @@ static const int al3010_scales[][2] =3D {
{0, 1187200}, {0, 296800}, {0, 74200}, {0, 18600}
};
=20
+static const struct regmap_config al3010_regmap_config =3D {
+ .reg_bits =3D 8,
+ .val_bits =3D 8,
+ .max_register =3D AL3010_REG_CONFIG,
+};
+
struct al3010_data {
- struct i2c_client *client;
+ struct regmap *regmap;
};
=20
static const struct iio_chan_spec al3010_channels[] =3D {
@@ -69,40 +76,32 @@ static const struct attribute_group al3010_attribute_gr=
oup =3D {
.attrs =3D al3010_attributes,
};
=20
-static int al3010_set_pwr(struct i2c_client *client, bool pwr)
+static int al3010_set_pwr_on(struct al3010_data *data)
{
- u8 val =3D pwr ? AL3010_CONFIG_ENABLE : AL3010_CONFIG_DISABLE;
- return i2c_smbus_write_byte_data(client, AL3010_REG_SYSTEM, val);
+ return regmap_write(data->regmap, AL3010_REG_SYSTEM, AL3010_CONFIG_ENABLE=
);
}
=20
static void al3010_set_pwr_off(void *_data)
{
struct al3010_data *data =3D _data;
+ struct device *dev =3D regmap_get_device(data->regmap);
+ int ret;
=20
- al3010_set_pwr(data->client, false);
+ ret =3D regmap_write(data->regmap, AL3010_REG_SYSTEM, AL3010_CONFIG_DISAB=
LE);
+ if (ret)
+ dev_err(dev, "failed to write system register\n");
}
=20
static int al3010_init(struct al3010_data *data)
{
int ret;
=20
- ret =3D al3010_set_pwr(data->client, true);
- if (ret < 0)
- return ret;
-
- ret =3D devm_add_action_or_reset(&data->client->dev,
- al3010_set_pwr_off,
- data);
- if (ret < 0)
- return ret;
-
- ret =3D i2c_smbus_write_byte_data(data->client, AL3010_REG_CONFIG,
- FIELD_PREP(AL3010_GAIN_MASK,
- AL3XXX_RANGE_3));
- if (ret < 0)
+ ret =3D al3010_set_pwr_on(data);
+ if (ret)
return ret;
=20
- return 0;
+ return regmap_write(data->regmap, AL3010_REG_CONFIG,
+ FIELD_PREP(AL3010_GAIN_MASK, AL3XXX_RANGE_3));
}
=20
static int al3010_read_raw(struct iio_dev *indio_dev,
@@ -110,7 +109,7 @@ static int al3010_read_raw(struct iio_dev *indio_dev,
int *val2, long mask)
{
struct al3010_data *data =3D iio_priv(indio_dev);
- int ret;
+ int ret, value;
=20
switch (mask) {
case IIO_CHAN_INFO_RAW:
@@ -119,21 +118,21 @@ static int al3010_read_raw(struct iio_dev *indio_dev,
* - low byte of output is stored at AL3010_REG_DATA_LOW
* - high byte of output is stored at AL3010_REG_DATA_LOW + 1
*/
- ret =3D i2c_smbus_read_word_data(data->client,
- AL3010_REG_DATA_LOW);
- if (ret < 0)
+ ret =3D regmap_read(data->regmap, AL3010_REG_DATA_LOW, &value);
+ if (ret)
return ret;
- *val =3D ret;
+
+ *val =3D value;
+
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
- ret =3D i2c_smbus_read_byte_data(data->client,
- AL3010_REG_CONFIG);
- if (ret < 0)
+ ret =3D regmap_read(data->regmap, AL3010_REG_CONFIG, &value);
+ if (ret)
return ret;
=20
- ret =3D FIELD_GET(AL3010_GAIN_MASK, ret);
- *val =3D al3010_scales[ret][0];
- *val2 =3D al3010_scales[ret][1];
+ value =3D FIELD_GET(AL3010_GAIN_MASK, value);
+ *val =3D al3010_scales[value][0];
+ *val2 =3D al3010_scales[value][1];
=20
return IIO_VAL_INT_PLUS_MICRO;
}
@@ -145,7 +144,7 @@ static int al3010_write_raw(struct iio_dev *indio_dev,
int val2, long mask)
{
struct al3010_data *data =3D iio_priv(indio_dev);
- int i;
+ unsigned int i;
=20
switch (mask) {
case IIO_CHAN_INFO_SCALE:
@@ -154,9 +153,8 @@ static int al3010_write_raw(struct iio_dev *indio_dev,
val2 !=3D al3010_scales[i][1])
continue;
=20
- return i2c_smbus_write_byte_data(data->client,
- AL3010_REG_CONFIG,
- FIELD_PREP(AL3010_GAIN_MASK, i));
+ return regmap_write(data->regmap, AL3010_REG_CONFIG,
+ FIELD_PREP(AL3010_GAIN_MASK, i));
}
break;
}
@@ -172,16 +170,20 @@ static const struct iio_info al3010_info =3D {
static int al3010_probe(struct i2c_client *client)
{
struct al3010_data *data;
+ struct device *dev =3D &client->dev;
struct iio_dev *indio_dev;
int ret;
=20
- indio_dev =3D devm_iio_device_alloc(&client->dev, sizeof(*data));
+ indio_dev =3D devm_iio_device_alloc(dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
=20
data =3D iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
- data->client =3D client;
+ data->regmap =3D devm_regmap_init_i2c(client, &al3010_regmap_config);
+ if (IS_ERR(data->regmap))
+ return dev_err_probe(dev, PTR_ERR(data->regmap),
+ "cannot allocate regmap\n");
=20
indio_dev->info =3D &al3010_info;
indio_dev->name =3D AL3010_DRV_NAME;
@@ -191,21 +193,30 @@ static int al3010_probe(struct i2c_client *client)
=20
ret =3D al3010_init(data);
if (ret < 0) {
- dev_err(&client->dev, "al3010 chip init failed\n");
+ dev_err(dev, "failed to init ALS\n");
return ret;
}
=20
- return devm_iio_device_register(&client->dev, indio_dev);
+ ret =3D devm_add_action_or_reset(dev, al3010_set_pwr_off, data);
+ if (ret < 0)
+ return ret;
+
+ return devm_iio_device_register(dev, indio_dev);
}
=20
static int al3010_suspend(struct device *dev)
{
- return al3010_set_pwr(to_i2c_client(dev), false);
+ struct al3010_data *data =3D iio_priv(dev_get_drvdata(dev));
+
+ al3010_set_pwr_off(data);
+ return 0;
}
=20
static int al3010_resume(struct device *dev)
{
- return al3010_set_pwr(to_i2c_client(dev), true);
+ struct al3010_data *data =3D iio_priv(dev_get_drvdata(dev));
+
+ return al3010_set_pwr_on(data);
}
=20
static DEFINE_SIMPLE_DEV_PM_OPS(al3010_pm_ops, al3010_suspend, al3010_resu=
me);
--=20
2.47.2
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From: David Heidelberg via B4 Relay <devnull+david.ixit.cz@kernel.org>
Date: Sat, 08 Mar 2025 21:01:01 +0100
Subject: [PATCH 4/4] iio: light: al3320a: Implement regmap support
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In-Reply-To: <20250308-al3010-iio-regmap-v1-0-b672535e8213@ixit.cz>
To: Jonathan Cameron <jic23@kernel.org>,
Lars-Peter Clausen <lars@metafoo.de>
Cc: Svyatoslav Ryhel <clamor95@gmail.com>,
Robert Eckelmann <longnoserob@gmail.com>, linux-iio@vger.kernel.org,
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X-Original-From: David Heidelberg <david@ixit.cz>
Reply-To: david@ixit.cz
From: David Heidelberg <david@ixit.cz>
Modernize and make driver a bit cleaner.
Incorporate most of the feedback given on new AL3000A.
Signed-off-by: David Heidelberg <david@ixit.cz>
---
drivers/iio/light/al3320a.c | 101 ++++++++++++++++++++++++----------------=
----
1 file changed, 56 insertions(+), 45 deletions(-)
diff --git a/drivers/iio/light/al3320a.c b/drivers/iio/light/al3320a.c
index d34a91fdafa0affad4665d995e1f66d2aaa0373b..208b4f212f3543557e99342630c=
92f5e6bdaf05d 100644
--- a/drivers/iio/light/al3320a.c
+++ b/drivers/iio/light/al3320a.c
@@ -15,6 +15,7 @@
#include <linux/bitfield.h>
#include <linux/i2c.h>
#include <linux/module.h>
+#include <linux/regmap.h>
#include <linux/mod_devicetable.h>
=20
#include <linux/iio/iio.h>
@@ -59,8 +60,14 @@ static const int al3320a_scales[][2] =3D {
{0, 512000}, {0, 128000}, {0, 32000}, {0, 10000}
};
=20
+static const struct regmap_config al3320a_regmap_config =3D {
+ .reg_bits =3D 8,
+ .val_bits =3D 8,
+ .max_register =3D AL3320A_REG_HIGH_THRESH_HIGH,
+};
+
struct al3320a_data {
- struct i2c_client *client;
+ struct regmap *regmap;
};
=20
static const struct iio_chan_spec al3320a_channels[] =3D {
@@ -82,45 +89,42 @@ static const struct attribute_group al3320a_attribute_g=
roup =3D {
.attrs =3D al3320a_attributes,
};
=20
-static int al3320a_set_pwr(struct i2c_client *client, bool pwr)
+static int al3320a_set_pwr_on(struct al3320a_data *data)
{
- u8 val =3D pwr ? AL3320A_CONFIG_ENABLE : AL3320A_CONFIG_DISABLE;
- return i2c_smbus_write_byte_data(client, AL3320A_REG_CONFIG, val);
+ return regmap_write(data->regmap, AL3320A_REG_CONFIG, AL3320A_CONFIG_ENAB=
LE);
}
=20
static void al3320a_set_pwr_off(void *_data)
{
struct al3320a_data *data =3D _data;
+ struct device *dev =3D regmap_get_device(data->regmap);
+ int ret;
=20
- al3320a_set_pwr(data->client, false);
+ ret =3D regmap_write(data->regmap, AL3320A_REG_CONFIG, AL3320A_CONFIG_DIS=
ABLE);
+ if (ret)
+ dev_err(dev, "failed to write system register\n");
}
=20
static int al3320a_init(struct al3320a_data *data)
{
int ret;
=20
- ret =3D al3320a_set_pwr(data->client, true);
-
- if (ret < 0)
+ ret =3D al3320a_set_pwr_on(data);
+ if (ret)
return ret;
=20
- ret =3D i2c_smbus_write_byte_data(data->client, AL3320A_REG_CONFIG_RANGE,
- FIELD_PREP(AL3320A_GAIN_MASK,
- AL3320A_RANGE_3));
- if (ret < 0)
- return ret;
-
- ret =3D i2c_smbus_write_byte_data(data->client, AL3320A_REG_MEAN_TIME,
- AL3320A_DEFAULT_MEAN_TIME);
- if (ret < 0)
+ ret =3D regmap_write(data->regmap, AL3320A_REG_CONFIG_RANGE,
+ FIELD_PREP(AL3320A_GAIN_MASK, AL3320A_RANGE_3));
+ if (ret)
return ret;
=20
- ret =3D i2c_smbus_write_byte_data(data->client, AL3320A_REG_WAIT,
- AL3320A_DEFAULT_WAIT_TIME);
- if (ret < 0)
+ ret =3D regmap_write(data->regmap, AL3320A_REG_MEAN_TIME,
+ AL3320A_DEFAULT_MEAN_TIME);
+ if (ret)
return ret;
=20
- return 0;
+ return regmap_write(data->regmap, AL3320A_REG_WAIT,
+ AL3320A_DEFAULT_WAIT_TIME);
}
=20
static int al3320a_read_raw(struct iio_dev *indio_dev,
@@ -128,7 +132,7 @@ static int al3320a_read_raw(struct iio_dev *indio_dev,
int *val2, long mask)
{
struct al3320a_data *data =3D iio_priv(indio_dev);
- int ret;
+ int ret, value;
=20
switch (mask) {
case IIO_CHAN_INFO_RAW:
@@ -137,21 +141,21 @@ static int al3320a_read_raw(struct iio_dev *indio_dev,
* - low byte of output is stored at AL3320A_REG_DATA_LOW
* - high byte of output is stored at AL3320A_REG_DATA_LOW + 1
*/
- ret =3D i2c_smbus_read_word_data(data->client,
- AL3320A_REG_DATA_LOW);
- if (ret < 0)
+ ret =3D regmap_read(data->regmap, AL3320A_REG_DATA_LOW, &value);
+ if (ret)
return ret;
- *val =3D ret;
+
+ *val =3D value;
+
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
- ret =3D i2c_smbus_read_byte_data(data->client,
- AL3320A_REG_CONFIG_RANGE);
- if (ret < 0)
+ ret =3D regmap_read(data->regmap, AL3320A_REG_CONFIG_RANGE, &value);
+ if (ret)
return ret;
=20
- ret =3D FIELD_GET(AL3320A_GAIN_MASK, ret);
- *val =3D al3320a_scales[ret][0];
- *val2 =3D al3320a_scales[ret][1];
+ value =3D FIELD_GET(AL3320A_GAIN_MASK, value);
+ *val =3D al3320a_scales[value][0];
+ *val2 =3D al3320a_scales[value][1];
=20
return IIO_VAL_INT_PLUS_MICRO;
}
@@ -163,7 +167,7 @@ static int al3320a_write_raw(struct iio_dev *indio_dev,
int val2, long mask)
{
struct al3320a_data *data =3D iio_priv(indio_dev);
- int i;
+ unsigned int i;
=20
switch (mask) {
case IIO_CHAN_INFO_SCALE:
@@ -172,9 +176,8 @@ static int al3320a_write_raw(struct iio_dev *indio_dev,
val2 !=3D al3320a_scales[i][1])
continue;
=20
- return i2c_smbus_write_byte_data(data->client,
- AL3320A_REG_CONFIG_RANGE,
- FIELD_PREP(AL3320A_GAIN_MASK, i));
+ return regmap_write(data->regmap, AL3320A_REG_CONFIG_RANGE,
+ FIELD_PREP(AL3320A_GAIN_MASK, i));
}
break;
}
@@ -190,16 +193,21 @@ static const struct iio_info al3320a_info =3D {
static int al3320a_probe(struct i2c_client *client)
{
struct al3320a_data *data;
+ struct device *dev =3D &client->dev;
struct iio_dev *indio_dev;
int ret;
=20
- indio_dev =3D devm_iio_device_alloc(&client->dev, sizeof(*data));
+ indio_dev =3D devm_iio_device_alloc(dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
=20
data =3D iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
- data->client =3D client;
+
+ data->regmap =3D devm_regmap_init_i2c(client, &al3320a_regmap_config);
+ if (IS_ERR(data->regmap))
+ return dev_err_probe(dev, PTR_ERR(data->regmap),
+ "cannot allocate regmap\n");
=20
indio_dev->info =3D &al3320a_info;
indio_dev->name =3D AL3320A_DRV_NAME;
@@ -209,27 +217,30 @@ static int al3320a_probe(struct i2c_client *client)
=20
ret =3D al3320a_init(data);
if (ret < 0) {
- dev_err(&client->dev, "al3320a chip init failed\n");
+ dev_err(dev, "failed to init ALS\n");
return ret;
}
=20
- ret =3D devm_add_action_or_reset(&client->dev,
- al3320a_set_pwr_off,
- data);
+ ret =3D devm_add_action_or_reset(dev, al3320a_set_pwr_off, data);
if (ret < 0)
return ret;
=20
- return devm_iio_device_register(&client->dev, indio_dev);
+ return devm_iio_device_register(dev, indio_dev);
}
=20
static int al3320a_suspend(struct device *dev)
{
- return al3320a_set_pwr(to_i2c_client(dev), false);
+ struct al3320a_data *data =3D iio_priv(dev_get_drvdata(dev));
+
+ al3320a_set_pwr_off(data);
+ return 0;
}
=20
static int al3320a_resume(struct device *dev)
{
- return al3320a_set_pwr(to_i2c_client(dev), true);
+ struct al3320a_data *data =3D iio_priv(dev_get_drvdata(dev));
+
+ return al3320a_set_pwr_on(data);
}
=20
static DEFINE_SIMPLE_DEV_PM_OPS(al3320a_pm_ops, al3320a_suspend,
--=20
2.47.2