From 7fd400297978a2cf7a74344fb22020e9479b4f69 Mon Sep 17 00:00:00 2001 From: Henrique de Moraes Holschuh Date: Tue, 25 Sep 2007 06:38:03 -0300 Subject: ACPI: thinkpad-acpi: use a separate platform device for hwmon and name it (v2) Use a separate platform device and driver ("thinkpad_hwmon") to attach hwmon attributes and class, and add a name attribute of "thinkpad" to it, which defines the hwmon device name for libsensors4. This makes thinkpad-acpi compatible with libsensors4 from lm-sensors, and the platform driver and device split will make it much easier to separate hwmon functionality into its own module later on. Signed-off-by: Henrique de Moraes Holschuh Cc: Jean Delvare Signed-off-by: Len Brown --- Documentation/thinkpad-acpi.txt | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) (limited to 'Documentation') diff --git a/Documentation/thinkpad-acpi.txt b/Documentation/thinkpad-acpi.txt index 60953d6c919..3b95bbacc77 100644 --- a/Documentation/thinkpad-acpi.txt +++ b/Documentation/thinkpad-acpi.txt @@ -105,10 +105,15 @@ The version of thinkpad-acpi's sysfs interface is exported by the driver as a driver attribute (see below). Sysfs driver attributes are on the driver's sysfs attribute space, -for 2.6.20 this is /sys/bus/platform/drivers/thinkpad_acpi/. +for 2.6.23 this is /sys/bus/platform/drivers/thinkpad_acpi/ and +/sys/bus/platform/drivers/thinkpad_hwmon/ -Sysfs device attributes are on the driver's sysfs attribute space, -for 2.6.20 this is /sys/devices/platform/thinkpad_acpi/. +Sysfs device attributes are on the thinkpad_acpi device sysfs attribute +space, for 2.6.23 this is /sys/devices/platform/thinkpad_acpi/. + +Sysfs device attributes for the sensors and fan are on the +thinkpad_hwmon device's sysfs attribute space, but you should locate it +looking for a hwmon device with the name attribute of "thinkpad". Driver version -------------- @@ -766,7 +771,7 @@ Temperature sensors ------------------- procfs: /proc/acpi/ibm/thermal -sysfs device attributes: (hwmon) temp*_input +sysfs device attributes: (hwmon "thinkpad") temp*_input Most ThinkPads include six or more separate temperature sensors but only expose the CPU temperature through the standard ACPI methods. This @@ -989,7 +994,9 @@ Fan control and monitoring: fan speed, fan enable/disable --------------------------------------------------------- procfs: /proc/acpi/ibm/fan -sysfs device attributes: (hwmon) fan_input, pwm1, pwm1_enable +sysfs device attributes: (hwmon "thinkpad") fan1_input, pwm1, + pwm1_enable +sysfs hwmon driver attributes: fan_watchdog NOTE NOTE NOTE: fan control operations are disabled by default for safety reasons. To enable them, the module parameter "fan_control=1" @@ -1131,7 +1138,7 @@ hwmon device attribute fan1_input: which can take up to two minutes. May return rubbish on older ThinkPads. -driver attribute fan_watchdog: +hwmon driver attribute fan_watchdog: Fan safety watchdog timer interval, in seconds. Minimum is 1 second, maximum is 120 seconds. 0 disables the watchdog. @@ -1233,3 +1240,9 @@ Sysfs interface changelog: layer, the radio switch generates input event EV_RADIO, and the driver enables hot key handling by default in the firmware. + +0x020000: ABI fix: added a separate hwmon platform device and + driver, which must be located by name (thinkpad) + and the hwmon class for libsensors4 (lm-sensors 3) + compatibility. Moved all hwmon attributes to this + new platform device. -- cgit v1.2.3