<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-toradex.git/drivers/hwmon/it87.c, branch v5.19</title>
<subtitle>Linux kernel for Apalis and Colibri modules</subtitle>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/'/>
<entry>
<title>hwmon: cleanup non-bool "valid" data fields</title>
<updated>2021-10-12T14:22:41+00:00</updated>
<author>
<name>Paul Fertser</name>
<email>fercerpav@gmail.com</email>
</author>
<published>2021-09-24T19:52:02+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=952a11ca32a6046ab86bf885a7805c935f71d5c8'/>
<id>952a11ca32a6046ab86bf885a7805c935f71d5c8</id>
<content type='text'>
We have bool so use it consistently in all the drivers.

The following Coccinelle script was used:

@@
identifier T;
type t = { char, int };
@@
struct T {
...
-	t valid;
+	bool valid;
...
}

@@
identifier v;
@@
(
- v-&gt;valid = 0
+ v-&gt;valid = false
|
- v-&gt;valid = 1
+ v-&gt;valid = true
)

followed by sed to fixup the comments:
sed '/bool valid;/{s/!=0/true/;s/zero/false/}'

Few whitespace changes were fixed manually. All modified drivers were
compile-tested.

Signed-off-by: Paul Fertser &lt;fercerpav@gmail.com&gt;
Link: https://lore.kernel.org/r/20210924195202.27917-1-fercerpav@gmail.com
[groeck: Fixed up 'u8 valid' to 'boool valid' in atxp1.c]
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
We have bool so use it consistently in all the drivers.

The following Coccinelle script was used:

@@
identifier T;
type t = { char, int };
@@
struct T {
...
-	t valid;
+	bool valid;
...
}

@@
identifier v;
@@
(
- v-&gt;valid = 0
+ v-&gt;valid = false
|
- v-&gt;valid = 1
+ v-&gt;valid = true
)

followed by sed to fixup the comments:
sed '/bool valid;/{s/!=0/true/;s/zero/false/}'

Few whitespace changes were fixed manually. All modified drivers were
compile-tested.

Signed-off-by: Paul Fertser &lt;fercerpav@gmail.com&gt;
Link: https://lore.kernel.org/r/20210924195202.27917-1-fercerpav@gmail.com
[groeck: Fixed up 'u8 valid' to 'boool valid' in atxp1.c]
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>hwmon: Use kobj_to_dev()</title>
<updated>2021-04-20T13:50:14+00:00</updated>
<author>
<name>Guenter Roeck</name>
<email>linux@roeck-us.net</email>
</author>
<published>2021-03-18T19:06:19+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=9d2227bb9bd4ae799e77c0575452e7e5716658ea'/>
<id>9d2227bb9bd4ae799e77c0575452e7e5716658ea</id>
<content type='text'>
coccinelle complains about

WARNING opportunity for kobj_to_dev()

in several files, resulting in one-by-one patch submissions.
Handle all remaining instances in one go.

Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
coccinelle complains about

WARNING opportunity for kobj_to_dev()

in several files, resulting in one-by-one patch submissions.
Handle all remaining instances in one go.

Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157</title>
<updated>2019-05-30T18:26:37+00:00</updated>
<author>
<name>Thomas Gleixner</name>
<email>tglx@linutronix.de</email>
</author>
<published>2019-05-27T06:55:06+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=c942fddf8793b2013be8c901b47d0a8dc02bf99f'/>
<id>c942fddf8793b2013be8c901b47d0a8dc02bf99f</id>
<content type='text'>
Based on 3 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] this program is distributed in the hope that
  it will be useful but without any warranty without even the implied
  warranty of merchantability or fitness for a particular purpose see
  the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] this program is distributed in the hope
  that it will be useful but without any warranty without even the
  implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Reviewed-by: Allison Randal &lt;allison@lohutok.net&gt;
Reviewed-by: Richard Fontana &lt;rfontana@redhat.com&gt;
Reviewed-by: Kate Stewart &lt;kstewart@linuxfoundation.org&gt;
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Based on 3 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] this program is distributed in the hope that
  it will be useful but without any warranty without even the implied
  warranty of merchantability or fitness for a particular purpose see
  the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] this program is distributed in the hope
  that it will be useful but without any warranty without even the
  implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Reviewed-by: Allison Randal &lt;allison@lohutok.net&gt;
Reviewed-by: Richard Fontana &lt;rfontana@redhat.com&gt;
Reviewed-by: Kate Stewart &lt;kstewart@linuxfoundation.org&gt;
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>hwmon: (it87) Reapply probe path chip registers settings after resume</title>
<updated>2017-08-13T15:24:38+00:00</updated>
<author>
<name>Maciej S. Szmigiero</name>
<email>mail@maciej.szmigiero.name</email>
</author>
<published>2017-08-09T15:15:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=384548e569c82dc1e018dcdfd7e19c4b9f87c6b5'/>
<id>384548e569c82dc1e018dcdfd7e19c4b9f87c6b5</id>
<content type='text'>
After a suspend / resume cycle we possibly need to reapply chip registers
settings that we had set or fixed in a probe path, since they might have
been reset to default values or set incorrectly by a BIOS again.

Tested on a Gigabyte M720-US3 board, which requires routing internal VCCH5V
to in7 (and had it wrong again on resume from S3).

Signed-off-by: Maciej S. Szmigiero &lt;mail@maciej.szmigiero.name&gt;
[groeck: Return value from it87_resume_sio() is unused; make it void]
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
After a suspend / resume cycle we possibly need to reapply chip registers
settings that we had set or fixed in a probe path, since they might have
been reset to default values or set incorrectly by a BIOS again.

Tested on a Gigabyte M720-US3 board, which requires routing internal VCCH5V
to in7 (and had it wrong again on resume from S3).

Signed-off-by: Maciej S. Szmigiero &lt;mail@maciej.szmigiero.name&gt;
[groeck: Return value from it87_resume_sio() is unused; make it void]
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>hwmon: (it87) Split out chip registers setting code on probe path</title>
<updated>2017-08-13T15:24:38+00:00</updated>
<author>
<name>Maciej S. Szmigiero</name>
<email>mail@maciej.szmigiero.name</email>
</author>
<published>2017-08-09T10:05:30+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=557cbf49d20f371fb430335fa504f6a50a001705'/>
<id>557cbf49d20f371fb430335fa504f6a50a001705</id>
<content type='text'>
This commit splits out chip registers setting code on probe path to
separate functions so they can be reused for setting the device properly
again when system resumes from suspend.

While we are at it let's also make clear that on IT8720 and IT8782 it's
the VCCH5V line that is (possibly) routed to in7.
This will make it consistent with a similar message that it printed on
IT8783.

Signed-off-by: Maciej S. Szmigiero &lt;mail@maciej.szmigiero.name&gt;
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This commit splits out chip registers setting code on probe path to
separate functions so they can be reused for setting the device properly
again when system resumes from suspend.

While we are at it let's also make clear that on IT8720 and IT8782 it's
the VCCH5V line that is (possibly) routed to in7.
This will make it consistent with a similar message that it printed on
IT8783.

Signed-off-by: Maciej S. Szmigiero &lt;mail@maciej.szmigiero.name&gt;
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>hwmon: (it87) Avoid registering the same chip on both SIO addresses</title>
<updated>2017-03-22T07:18:21+00:00</updated>
<author>
<name>Guenter Roeck</name>
<email>linux@roeck-us.net</email>
</author>
<published>2017-03-12T13:18:58+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=8358378b22518d92424597503d3c1cd302a490b6'/>
<id>8358378b22518d92424597503d3c1cd302a490b6</id>
<content type='text'>
IT8705F is known to respond on both SIO addresses. Registering it twice
may result in system lockups.

Reported-by: Russell King &lt;linux@armlinux.org.uk&gt;
Fixes: e84bd9535e2b ("hwmon: (it87) Add support for second Super-IO chip")
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
IT8705F is known to respond on both SIO addresses. Registering it twice
may result in system lockups.

Reported-by: Russell King &lt;linux@armlinux.org.uk&gt;
Fixes: e84bd9535e2b ("hwmon: (it87) Add support for second Super-IO chip")
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>hwmon: (it87) Add support for IT8792E</title>
<updated>2017-02-11T05:35:08+00:00</updated>
<author>
<name>Guenter Roeck</name>
<email>linux@roeck-us.net</email>
</author>
<published>2017-02-08T23:10:27+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=e531ffc0ff796eca578367b1924b03103abdcca4'/>
<id>e531ffc0ff796eca578367b1924b03103abdcca4</id>
<content type='text'>
The chip is similar to IT8732E, but supports only three fans
and pwm outputs instead of four (the driver currently does not
support the 4th fan and pwm output of IT8732E).

Note that the chip ID is 0x8733, not 0x8792 as one would expect.

Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The chip is similar to IT8732E, but supports only three fans
and pwm outputs instead of four (the driver currently does not
support the 4th fan and pwm output of IT8732E).

Note that the chip ID is 0x8733, not 0x8792 as one would expect.

Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>hwmon: (it87) Do not overwrite bit 2..6 of pwm control registers</title>
<updated>2017-02-11T05:35:08+00:00</updated>
<author>
<name>Guenter Roeck</name>
<email>linux@roeck-us.net</email>
</author>
<published>2017-02-08T22:07:42+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=4c7b8ca1ae5ed9e27014732c8a918ba11a86cf09'/>
<id>4c7b8ca1ae5ed9e27014732c8a918ba11a86cf09</id>
<content type='text'>
In IT8620E, after setting pwm control to manual, it was observed that
pwm values for fan 4..6 have reversed results (writing 0 results in fans
running at full speed, writing 255 results in fans turned off).

With the new PWM control, pwm polarity for pwm control 4..6 is specified
in its pwm control registers. Those registers are overwritten when setting
the pwm mode or the temperature mapping. Do not touch bit 2..6 of pwm
control registers on register writes to fix the problem.

Cc: stable@vger.kernel.org # 4.9+
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
In IT8620E, after setting pwm control to manual, it was observed that
pwm values for fan 4..6 have reversed results (writing 0 results in fans
running at full speed, writing 255 results in fans turned off).

With the new PWM control, pwm polarity for pwm control 4..6 is specified
in its pwm control registers. Those registers are overwritten when setting
the pwm mode or the temperature mapping. Do not touch bit 2..6 of pwm
control registers on register writes to fix the problem.

Cc: stable@vger.kernel.org # 4.9+
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>hwmon: (it87) Fix pwm4 detection for IT8620 and IT8628</title>
<updated>2017-02-11T05:35:08+00:00</updated>
<author>
<name>Guenter Roeck</name>
<email>linux@roeck-us.net</email>
</author>
<published>2017-02-08T22:05:56+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=d66777caa57ffade6061782f3a4d4056f0b0c1ac'/>
<id>d66777caa57ffade6061782f3a4d4056f0b0c1ac</id>
<content type='text'>
pwm4 is enabled if bit 2 of GPIO control register 4 is disabled,
not when it is enabled. Since the check is for the skip condition,
it is reversed. This applies to both IT8620 and IT8628.

Fixes: 36c4d98a7883d ("hwmon: (it87) Add support for all pwm channels ...")
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
pwm4 is enabled if bit 2 of GPIO control register 4 is disabled,
not when it is enabled. Since the check is for the skip condition,
it is reversed. This applies to both IT8620 and IT8628.

Fixes: 36c4d98a7883d ("hwmon: (it87) Add support for all pwm channels ...")
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>hwmon: (it87) Ensure that pwm control cache is current before updating values</title>
<updated>2017-02-11T05:35:08+00:00</updated>
<author>
<name>Guenter Roeck</name>
<email>linux@roeck-us.net</email>
</author>
<published>2017-02-08T22:02:59+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=82dbe987b70042b340f851bdc969a971081e5f02'/>
<id>82dbe987b70042b340f851bdc969a971081e5f02</id>
<content type='text'>
If sensor attributes were never read, the pwm control data has not been
initiialized, which can cause wrong driver behavior. Ensure that cached
data is current before acting on it.

Cc: stable@vger.kernel.org # 4.4+
Reported-by: Kevin Folz &lt;kfolz@evertz.com&gt;
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
If sensor attributes were never read, the pwm control data has not been
initiialized, which can cause wrong driver behavior. Ensure that cached
data is current before acting on it.

Cc: stable@vger.kernel.org # 4.4+
Reported-by: Kevin Folz &lt;kfolz@evertz.com&gt;
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
</pre>
</div>
</content>
</entry>
</feed>
