Commit Graph

168 Commits

Author SHA1 Message Date
Maciej S. Szmigiero 384548e569 hwmon: (it87) Reapply probe path chip registers settings after resume
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 <mail@maciej.szmigiero.name>
[groeck: Return value from it87_resume_sio() is unused; make it void]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-08-13 08:24:38 -07:00
Maciej S. Szmigiero 557cbf49d2 hwmon: (it87) Split out chip registers setting code on probe path
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 <mail@maciej.szmigiero.name>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-08-13 08:24:38 -07:00
Guenter Roeck 8358378b22 hwmon: (it87) Avoid registering the same chip on both SIO addresses
IT8705F is known to respond on both SIO addresses. Registering it twice
may result in system lockups.

Reported-by: Russell King <linux@armlinux.org.uk>
Fixes: e84bd9535e ("hwmon: (it87) Add support for second Super-IO chip")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-03-22 00:18:21 -07:00
Guenter Roeck e531ffc0ff hwmon: (it87) Add support for IT8792E
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 <linux@roeck-us.net>
2017-02-10 21:35:08 -08:00
Guenter Roeck 4c7b8ca1ae hwmon: (it87) Do not overwrite bit 2..6 of pwm control registers
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 <linux@roeck-us.net>
2017-02-10 21:35:08 -08:00
Guenter Roeck d66777caa5 hwmon: (it87) Fix pwm4 detection for IT8620 and IT8628
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: 36c4d98a78 ("hwmon: (it87) Add support for all pwm channels ...")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10 21:35:08 -08:00
Guenter Roeck 82dbe987b7 hwmon: (it87) Ensure that pwm control cache is current before updating values
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 <kfolz@evertz.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10 21:35:08 -08:00
Guenter Roeck 638c1c07f9 hwmon: (it87) Improve IT8622 support
Configuration registers on ITE8622 are different to 8620 and 8628 and
require special handling. Also, the chip supports up to 5 pwm controls.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10 21:35:08 -08:00
Guenter Roeck 8af1abae72 hwmon: (it87) Add support for IT8622E
IT8622E is similar to IT8620E, but only supports five pwm controls and
five fan tachometers.

Originally-from: Kevin Folz <kfolz@evertz.com>.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10 21:35:08 -08:00
Guenter Roeck a9eebd4f28 hwmon: (it87) Add feature flag indicating that VIN3 is connected to 5V
On IT8622E and IT8628E, VIN3 is expected to be connected to +5V.
Add feature flag and reflect in input label.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10 21:35:08 -08:00
Julia Lawall ddc64ae839 hwmon: (it87) use permission-specific DEVICE_ATTR variants
Use DEVICE_ATTR_RO for read only attributes and DEVICE_ATTR_RW for
read/write attributes. This simplifies the source code, improves
readbility, and reduces the chance of inconsistencies.

The conversion was done automatically using coccinelle. It was validated
by compiling both the old and the new source code and comparing its text,
data, and bss size.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
[groeck: Updated description]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-01-02 10:19:45 -08:00
Jean Delvare d5f3f6c812 hwmon: (it87) Drop useless comments
Remove the index comments at the end of it87_attributes_in. They
serve no purpose (as there is no reference to them in
it87_in_is_visible) and some of them were obviously wrong.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-09-08 21:34:17 -07:00
Jean Delvare 3c3292634f hwmon: (it87) Add missing sysfs attribute group terminator
Attribute array it87_attributes_in lacks its NULL terminator,
causing random behavior when operating on the attribute group.

Fixes: 5292971563 ("hwmon: (it87) Use is_visible for voltage sensors")
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-08-29 05:31:31 -07:00
Guenter Roeck aa8b187eea hwmon: (it87) Features mask must be 32 bit wide
Coverity reports:

result_independent_of_operands: data->features & (65536UL /* 1UL << 16 */)
is always 0 regardless of the values of its operands. This occurs as the
logical operand of if.

data->features needs to be 32 bit wide since there are more than 16 features.

Fixes: cc18da79d9 ("hwmon: (it87) Support up to 6 temperature sensors ... ");
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-08-11 18:35:47 -07:00
Guenter Roeck 71a9c23246 hwmon: (it87) Add support for IT8628E
IT8628E is functionally identical to IT8620E.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:38 -07:00
Guenter Roeck 0624d86198 hwmon: (it87) Fix pwm_temp_map for system with 6 pwm channels
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck 2cbb9c370f hwmon: (it87) Support automatic pwm control on newer chips
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck a0df926d33 hwmon: (it87) Enhance validation for fan4 and fan5
Several of the chips supported by this driver have a configuration
register to enable fan4 and fan5. Use those registers to determine
if fan4 and fan5 tachometers are supported.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck f1bbe61860 hwmon: (it87) Support disabling fan control for all pwm control and chips
On/Off mode is only supported for pwm controls 0-2, and not supported at all for
IT8603E/IT8623E. For pwm controls 3-6 and for IT8603E/IT8623E, SmartGuardian mode
is always enabled. Use it and set the pwm value to the maximum if fan control
is disabled.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck c962024e30 hwmon: (it87) Formatting cleanup
Fix various checkpatch complaints to clean up the code and
make it easier to read.

CHECK: Do not include the paragraph about writing to the FSF
CHECK: Alignment should match open parenthesis
CHECK: Logical continuations should be on the previous line
CHECK: No space is necessary after a cast
CHECK: Please don't use multiple blank lines
CHECK: Please use a blank line after function/struct/union/enum
       declarations
CHECK: spaces preferred around that '+' (ctx:VxV)
WARNING: Missing a blank line after declarations

No functional change.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck 2310048db7 hwmon: (it87) Use defines for array sizes and sensor counts
Using array size defines makes it much easier to find errors
in index values and loop counts.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck 48b2ae7fe9 hwmon: (it87) Use BIT macro
Using the BIT macro makes the code a little easier to read and has the
added benefit of making checkpatch happy.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck f838aa2611 hwmon: (it87) Add support for VIN7 to VIN10 on IT8620E
IT8620E supports three additional voltage sensors.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck 559313c4e9 hwmon: (it87) Simplify reading voltage registers
Voltage registers are non-sequential. Use a register array instead
of a macro to map sensor index to register to simplify the code
and to make it easier to add additional voltage sensors.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck cc18da79d9 hwmon: (it87) Support up to 6 temperature sensors on IT8620E
Add support for the additional temperature sensors on IT8620E.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:37 -07:00
Guenter Roeck 8638d0afb4 hwmon: (it87) Convert to use new hwmon API
Convert to use devm_hwmon_device_register_with_groups to simplify
code and reduce code size. This also attaches sysfs attributes
to the hwmon device and no longer to the platform device.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck d376684880 hwmon: (it87) Use single group and is_visible for miscellaneous attributes
Use is_visible to determine if attributes should be generated or not.
This simplifies the code and reduces object size by about 120 bytes
on x86_64.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck 5c3912616d hwmon: (it87) Use is_visible for pwm attributes
Simplify code and reduce object size by about 250 bytes on x86_64.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck 9a70ee814d hwmon: (it87) Use is_visible for fan attributes
Simplify code and reduce object size by almost 500 bytes on x86_64.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck 87533770be hwmon: (it87) Use is_visible for temperature sensors
Simplify code and reduce object size by more than 200 bytes on x86_64.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck 5292971563 hwmon: (it87) Use is_visible for voltage sensors
Simplify code and reduce object size by more than 300 bytes on x86_64.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck c1e7a4ca6d hwmon: (it87) Rearrange code to avoid forward declarations
Cleanup only, no functional change.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck e84bd9535e hwmon: (it87) Add support for second Super-IO chip
The Super-IO chip can also reside at SIO address 0x4e, and there can be
two Super-IO chips in the system. Add support for it.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck 3c2e35126f hwmon: (it87) Pass SIO base address as parameter to superio functions
This will let us support more than one chip on different SIO addresses
with the same driver.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck 8e50e3c3f6 hwmon: (it87) Don't use pdev as static driver variable
Using the same varible name for function names and as static
variable invites misuse and prevents us from adding support
for a second chip. Rename pdev to it87_pdev and limit its use
to where it is needed.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:36 -07:00
Guenter Roeck 5cae84a58e hwmon: (it87) Simplify error return in it87_device_add
Return directly on errors if there is no cleanup necessary.
Don't create an error message on memory allocation errors.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:35 -07:00
Guenter Roeck 60878bcfd3 hwmon: (it87) Add support for second pwm frequency register
Recent chips have a separate register to select the pwm2 frequency.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:35 -07:00
Guenter Roeck 36c4d98a78 hwmon: (it87) Add support for all pwm channels on IT8620E
IT8620E supports up to 6 pwm channels. Add support for it.
Also check if fan tachometers 4..6 are enabled before instantiating
the respective sysfs attributes.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:35 -07:00
Guenter Roeck 730554059b hwmon: (it87) Add feature flag for AVCC3 support
AVCC3 is supported on IT8620E, similar to IT8603E. Add feature flag
to indicate AVCC3 support. Don't enable it for now on IT8620E since
it is unclear if this chip supports it correctly.

Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19 06:32:35 -07:00
Justin Maggard ead8080351 hwmon: (it87) Add support for IT8732F
Add support for the IT8732F.  This chip is pretty similar to IT8721F,
with the main difference being that the ADC LSB is 10.9 mV instead of
12 mV.

Signed-off-by: Justin Maggard <jmaggard@netgear.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-08-09 13:44:27 -07:00
Guenter Roeck f83a9cb622 hwmon: (it87) Use feature macros on sio_data
Feature macros work on sio_data as well, so use them there.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-09 06:39:11 -07:00
Guenter Roeck fa3f70d628 hwmon: (it87) Add support for 6th fan of IT8620E
IT8620E supports up to 6 fan tachometers.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05 06:01:00 -07:00
Guenter Roeck 3ba9d977a9 hwmon: (it87) Add support for IT8620E
IT8620E is mostly compatible to IT7828F. Add generic support for it.

IT8620E supports up to 6 fan tachometers and 6 pwm controls.
Support for the 6th tachometer and for the additional pwm controls
are addded in separate patches.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05 06:01:00 -07:00
Guenter Roeck 4ee07157d6 hwmon: (it87) Add support for IT8790E
IT8790E is a super-IO chip with three fan tachometers. It is mostly
compatible to IT8728F, but only supports three fan tachometers
instead of five.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05 06:00:59 -07:00
Guenter Roeck 7f5726c39a hwmon: (it87) Introduce feature flag to reflect internal in7 sensor
On some chips, in7 is always an internal voltage sensor. Introduce
feature flag to reflect this condition to simplify adding support
for new chips.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05 06:00:52 -07:00
Guenter Roeck faf392fb84 hwmon: (it87) Introduce configuration field for chip suffix
ITE chips may have 'E', 'F', or both 'E' and 'F' suffixes.
Introduce suffic configuration to the it87_devices structure
to simplify adding new chips.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05 06:00:51 -07:00
Guenter Roeck f56c9c0aa6 hwmon: (it87) Fix PWM frequency display for chips with newer PWM control
On chips with newer PWM control, the PWM frequency divider is 256
instead of 128. Since the base PWM frequency remained the same, the actual
PWM frequency is half of what it used to be with the older PWM control
mechanism.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05 06:00:42 -07:00
Guenter Roeck 1696d1deb0 hwmon: (it87) Fix pwm sysfs attribute removal
Detection if a pwm channel is supported was wrong on removal,
causing the code to try removing non-existing sysfs attributes.
That didn't matter much because sysfs attribute removal of non-existing
files fails silently, and because the wrong evaluation always returned
false, but should nevertheless be fixed.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-03-30 08:12:16 -07:00
Guenter Roeck e8433b42b6 hwmon: (it87) No need to skip fan4 for IT8603
IT8603 only supports three fans, so it is not necessary to skip fan4.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-03-09 09:59:36 -07:00
Thomas Lorblanches a0c1424acb hwmon: (it87) Add support for IT8786E
IT8786E is mostly compatible with IT8771 / IT8772.
Parameters determined by testing various combinations.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Thomas Lorblanches <zlika_ese@hotmail.com>
[Guenter Roeck: merged from github, addressed review comments]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-03-09 09:59:36 -07:00