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Add support for compatible AHT20 temperature/humidity sensor. The only
difference between the two is that AHT20 has additional crc8 byte.
It seems like AHT15 is also supported by the driver but it wasn't
verified and tested yet.
Tested on Beaglebone black rev C.
Signed-off-by: Kirill Yatsenko <kiriyatsenko@gmail.com>
Link: https://lore.kernel.org/r/20230524201912.815993-1-kiriyatsenko@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Exit from the function immediately if the poll time hasn't yet expired.
Therefore the code after the check can be moved one tab to the left which
improves readability.
Signed-off-by: Kirill Yatsenko <kiriyatsenko@gmail.com>
Link: https://lore.kernel.org/r/20230511202633.299174-2-kiriyatsenko@gmail.com
[groeck: Dropped else after return]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Fix typos in the description of the return value section of the
functions. The word 'succesfull' is incorrect, it should be 'successful'.
Signed-off-by: Kirill Yatsenko <kiriyatsenko@gmail.com>
Link: https://lore.kernel.org/r/20230511202633.299174-1-kiriyatsenko@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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After commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert
back to (the new) .probe() to be able to eventually drop .probe_new() from
struct i2c_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230505131718.1210071-1-u.kleine-koenig@pengutronix.de
[groeck: Added missing change in pmbus/acbel-fsg032.c]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Statically allocated array of pointed to hwmon_channel_info can be made
const for safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Make the description of @aht10_data to @data in aht10_read_values()
and remove @client in aht10_init() to clear the below warnings:
drivers/hwmon/aht10.c:87: warning: Excess function parameter 'client' description in 'aht10_init'
drivers/hwmon/aht10.c:131: warning: Function parameter or member 'data' not described in 'aht10_read_values'
drivers/hwmon/aht10.c:131: warning: Excess function parameter 'aht10_data' description in 'aht10_read_values'
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3543
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20221223081056.88345-1-yang.lee@linux.alibaba.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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All these drivers have an i2c probe function which doesn't use the
"struct i2c_device_id *id" parameter, so they can trivially be
converted to the "probe_new" style of probe with a single argument.
This is part of an ongoing transition to single-argument i2c probe
functions. Old-style probe functions involve a call to i2c_match_id:
in drivers/i2c/i2c-core-base.c,
/*
* When there are no more users of probe(),
* rename probe_new to probe.
*/
if (driver->probe_new)
status = driver->probe_new(client);
else if (driver->probe)
status = driver->probe(client,
i2c_match_id(driver->id_table, client));
else
status = -EINVAL;
Drivers which don't need the second parameter can be declared using
probe_new instead, avoiding the call to i2c_match_id. Drivers which do
can still be converted to probe_new-style, calling i2c_match_id
themselves (as is done currently for of_match_id).
This change was done using the following Coccinelle script, and fixed
up for whitespace changes:
@ rule1 @
identifier fn;
identifier client, id;
@@
- static int fn(struct i2c_client *client, const struct i2c_device_id *id)
+ static int fn(struct i2c_client *client)
{
...when != id
}
@ rule2 depends on rule1 @
identifier rule1.fn;
identifier driver;
@@
struct i2c_driver driver = {
- .probe
+ .probe_new
=
(
fn
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- &fn
+ fn
)
,
};
Signed-off-by: Stephen Kitt <steve@sk2.org>
Link: https://lore.kernel.org/r/20221011143309.3141267-1-steve@sk2.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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This error path needs to drop the lock before returning.
Fixes: afd018716398 ("hwmon: Add AHT10 Temperature and Humidity Sensor Driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YBD5Ro549hMJSnW4@mwanda
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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This patch adds a hwmon driver for the AHT10 Temperature and
Humidity sensor. It has a maximum sample rate, as the datasheet
states that the chip may heat up if it is sampled more than once
every two seconds.
Has been tested a to work on a raspberrypi0w
Signed-off-by: Johannes Cornelis Draaijer (datdenkikniet) <jcdra1@gmail.com>
Link: https://lore.kernel.org/r/20210107194014.GA88780@desktop
[groeck: dropped AHT10_ADDR (unused) and use AHT10_MEAS_SIZE where
appropriate; dropped change log]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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