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authorArmin Wolf <W_Armin@gmx.de>2021-09-27 00:10:43 +0200
committerGuenter Roeck <linux@roeck-us.net>2021-10-16 14:58:42 -0700
commitb1986c8e31a3e5f119a52aab50234fc65cf01f30 (patch)
tree079288213759c620f6a1ec34ed6c23390e217146 /Documentation/hwmon
parent51369c0f05347c1f4762cb05e9775e81eec04262 (diff)
hwmon: (dell-smm) Add support for fanX_min, fanX_max and fanX_target
The nominal speed of each fan can be obtained with i8k_get_fan_nominal_speed(), however the result is not available from userspace. Change that by adding fanX_min, fanX_max and fanX_target attributes. All are RO since fan control happens over pwm. Tested on a Dell Inspiron 3505 and a Dell Latitude C600. Signed-off-by: Armin Wolf <W_Armin@gmx.de> Reviewed-by: Pali Rohár <pali@kernel.org> Link: https://lore.kernel.org/r/20210926221044.14327-2-W_Armin@gmx.de Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/dell-smm-hwmon.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/hwmon/dell-smm-hwmon.rst b/Documentation/hwmon/dell-smm-hwmon.rst
index 3bf77a5df995..beec88491171 100644
--- a/Documentation/hwmon/dell-smm-hwmon.rst
+++ b/Documentation/hwmon/dell-smm-hwmon.rst
@@ -34,6 +34,9 @@ Name Perm Description
=============================== ======= =======================================
fan[1-3]_input RO Fan speed in RPM.
fan[1-3]_label RO Fan label.
+fan[1-3]_min RO Minimal Fan speed in RPM
+fan[1-3]_max RO Maximal Fan speed in RPM
+fan[1-3]_target RO Expected Fan speed in RPM
pwm[1-3] RW Control the fan PWM duty-cycle.
pwm1_enable WO Enable or disable automatic BIOS fan
control (not supported on all laptops,