ACPI: thinkpad-acpi: make EC-based thermal readings non-experimental

Henrique de Moraes Holschuh
2007-07-14T14:12:11Z

Reading the 16 thermal sensors directly from the EC has been stable for
about one year, in all supported ThinkPad models. Remove its
"experimental" label.

Signed-off-by: Henrique de Moraes Holschuh <hmh-N3TV7GIv+o9fyO9Q7EP/yw@public.gmane.org>
---
Documentation/thinkpad-acpi.txt | 18 +++++-------------
drivers/misc/thinkpad_acpi.c | 2 +-
2 files changed, 6 insertions(+), 14 deletions(-)

diff --git a/Documentation/thinkpad-acpi.txt b/Documentation/thinkpad-acpi.txt
index 5d827de..3eb949e 100644
--- a/Documentation/thinkpad-acpi.txt
+++ b/Documentation/thinkpad-acpi.txt
@@ -710,23 +710,15 @@ Temperature sensors
procfs: /proc/acpi/ibm/thermal
sysfs device attributes: (hwmon) temp*_input

-Most ThinkPads include six or more separate temperature sensors but
-only expose the CPU temperature through the standard ACPI methods.
-This feature shows readings from up to eight different sensors on older
-ThinkPads, and it has experimental support for up to sixteen different
-sensors on newer ThinkPads.
-
-EXPERIMENTAL: The 16-sensors feature is marked EXPERIMENTAL because the
-implementation directly accesses hardware registers and may not work as
-expected. USE WITH CAUTION! To use this feature, you need to supply the
-experimental=1 parameter when loading the module. When EXPERIMENTAL
-mode is enabled, reading the first 8 sensors on newer ThinkPads will
-also use an new experimental thermal sensor access mode.
+Most ThinkPads include six or more separate temperature sensors but only
+expose the CPU temperature through the standard ACPI methods. This
+feature shows readings from up to eight different sensors on older
+ThinkPads, and up to sixteen different sensors on newer ThinkPads.

For example, on the X40, a typical output may be:
temperatures: 42 42 45 41 36 -128 33 -128

-EXPERIMENTAL: On the T43/p, a typical output may be:
+On the T43/p, a typical output may be:
temperatures: 48 48 36 52 38 -128 31 -128 48 52 48 -128 -128 -128 -128 -128

The mapping of thermal sensors to physical locations varies depending on
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index edae74f..2a26941 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -2709,7 +2709,7 @@ static int __init thermal_init(struct ibm_init_struct *iibm)

acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");

- if (thinkpad_id.ec_model && experimental) {
+ if (thinkpad_id.ec_model) {
/*
* Direct EC access mode: sensors at registers
* 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
--
1.5.2.1