Am Wed, 21 Feb 2007 12:04:52 -0200
schrieb Henrique de Moraes Holschuh <hmh@xxxxxxxxxx>:
> 3. Triple check the DSDTs to make sure the kill switch is not
> exported in higher level.
_SB.PCIO.LPC.EC.GSTS seems to be the switch. I wrote another patch
using that. Models without this DSDT should see "not supported".
Henning
--- drivers/acpi/ibm_acpi.c.orig 2007-02-21 13:35:07.000000000 +0100
+++ drivers/acpi/ibm_acpi.c 2007-02-21 22:41:38.000000000 +0100
@@ -1602,6 +1602,19 @@
return 0;
}
+static int killswitch_read(char *p)
+{
+ int state, len = 0;
+
+ if (!acpi_evalf(ec_handle, &state, "GSTS", "d")) {
+ len += sprintf(p + len, "status:\t\tnot supported\n");
+ } else {
+ len += sprintf(p + len, "status:\t\t%s\n", enabled(~state,0));
+ }
+
+ return len;
+}
+
static struct ibm_struct ibms[] = {
{
.name = "driver",
@@ -1714,6 +1727,11 @@
.write = fan_write,
.experimental = 1,
},
+ {
+ .name = "killswitch",
+ .read = killswitch_read,
+ .experimental = 1,
+ },
};
static int dispatch_read(char *page, char **start, off_t off, int count,
@@ -1962,6 +1980,7 @@
IBM_PARAM(brightness);
IBM_PARAM(volume);
IBM_PARAM(fan);
+IBM_PARAM(killswitch);
static void acpi_ibm_exit(void)
{
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