[ltp] [PATCH] ibm_acpi - Allow fan to be set to full speed
Leon Brokken
linux-thinkpad@linux-thinkpad.org
Mon, 22 Aug 2005 11:32:28 +0300
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Patch works on my T41.
However, the ibm_manage_fan script doesn't work anymore (ibm_manage_fan
script disables the fan when CPU temp is below a certain value). Anyone
else noticed this behaviour?
bash-bash-3.00# cat /proc/acpi/ibm/fan
status: enabled
speed: 3581
commands: enable, disable, full-speed
bash-3.00# echo full-speed > /proc/acpi/ibm/fan
bash-3.00# cat /proc/acpi/ibm/fan
status: disabled
speed: 4986
commands: enable, disable, full-speed
Cheers, Leon.
Thomas Renninger wrote:
>echo full-speed >/proc/acpi/ibm/fan
>sets the speed to max for most Thinkpads.
>
> Thomas
>
>
>------------------------------------------------------------------------
>
>--- drivers/acpi/ibm_acpi.c.orig 2005-08-20 19:42:16.000000000 -0600
>+++ drivers/acpi/ibm_acpi.c 2005-08-20 19:42:48.000000000 -0600
>@@ -1507,7 +1507,7 @@
> " (<level> is 0-7)\n");
> if (!gfan_handle)
> /* all except 570, 600e/x, 770e, 770x */
>- len += sprintf(p + len, "commands:\tenable, disable\n");
>+ len += sprintf(p + len, "commands:\tenable, disable, full-speed\n");
> if (fans_handle)
> /* X31, X40 */
> len += sprintf(p + len, "commands:\tspeed <speed>"
>@@ -1538,6 +1538,11 @@
> /* all except 570, 600e/x, 770e, 770x */
> if (!acpi_ec_write(fan_status_offset, 0x00))
> return -EIO;
>+ } else if (!gfan_handle &&
>+ strlencmp(cmd, "full-speed") == 0) {
>+ /* all except 570, 600e/x, 770e, 770x */
>+ if (!acpi_ec_write(fan_status_offset, 0x50))
>+ return -EIO;
> } else if (fans_handle &&
> sscanf(cmd, "speed %d", &speed) == 1 &&
> speed >= 0 && speed <= 65535) {
>
>
--
Leon J.S. Brokken
Dept. of Anatomy, Inst. of Biomedicine, University of Turku
Tykistökatu 6 A, 20520 Turku, Finland
Tel. +358(0)405845063, Fax +358(0)22502610
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Patch works on my T41.<br>
<br>
However, the ibm_manage_fan script doesn't work anymore (ibm_manage_fan
script disables the fan when CPU temp is below a certain value). Anyone
else noticed this behaviour?<br>
<br>
bash-bash-3.00# cat /proc/acpi/ibm/fan <br>
status: enabled<br>
speed: 3581<br>
commands: enable, disable, full-speed<br>
bash-3.00# echo full-speed > /proc/acpi/ibm/fan <br>
bash-3.00# cat /proc/acpi/ibm/fan <br>
status: disabled<br>
speed: 4986<br>
commands: enable, disable, full-speed<br>
<br>
Cheers, Leon.<br>
<br>
<br>
Thomas Renninger wrote:
<blockquote cite="mid43080397.9010106@gmx.net" type="cite">
<pre wrap="">echo full-speed >/proc/acpi/ibm/fan
sets the speed to max for most Thinkpads.
Thomas
</pre>
<pre wrap="">
<hr size="4" width="90%">
--- drivers/acpi/ibm_acpi.c.orig 2005-08-20 19:42:16.000000000 -0600
+++ drivers/acpi/ibm_acpi.c 2005-08-20 19:42:48.000000000 -0600
@@ -1507,7 +1507,7 @@
" (<level> is 0-7)\n");
if (!gfan_handle)
/* all except 570, 600e/x, 770e, 770x */
- len += sprintf(p + len, "commands:\tenable, disable\n");
+ len += sprintf(p + len, "commands:\tenable, disable, full-speed\n");
if (fans_handle)
/* X31, X40 */
len += sprintf(p + len, "commands:\tspeed <speed>"
@@ -1538,6 +1538,11 @@
/* all except 570, 600e/x, 770e, 770x */
if (!acpi_ec_write(fan_status_offset, 0x00))
return -EIO;
+ } else if (!gfan_handle &&
+ strlencmp(cmd, "full-speed") == 0) {
+ /* all except 570, 600e/x, 770e, 770x */
+ if (!acpi_ec_write(fan_status_offset, 0x50))
+ return -EIO;
} else if (fans_handle &&
sscanf(cmd, "speed %d", &speed) == 1 &&
speed >= 0 && speed <= 65535) {
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Leon J.S. Brokken
Dept. of Anatomy, Inst. of Biomedicine, University of Turku
Tykistökatu 6 A, 20520 Turku, Finland
Tel. +358(0)405845063, Fax +358(0)22502610
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GnuPG: 0x3C0E8DAE | 1EE8 511D A6D3 9F9C 2F43 EB6E 8387 B051 3C0E 8DAE
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</pre>
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