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Index: sys/dev/acpi_support/acpi_ibm.c
===================================================================
--- sys/dev/acpi_support/acpi_ibm.c
+++ sys/dev/acpi_support/acpi_ibm.c
@@ -75,6 +75,7 @@
#define ACPI_IBM_METHOD_THERMAL 13
#define ACPI_IBM_METHOD_HANDLEREVENTS 14
#define ACPI_IBM_METHOD_MIC_LED 15
+#define ACPI_IBM_METHOD_PRIVACYGUARD 16
/* Hotkeys/Buttons */
#define IBM_RTC_HOTKEY1 0x64
@@ -123,6 +124,8 @@
#define IBM_NAME_MASK_WLAN (1 << 2)
#define IBM_NAME_THERMAL_GET "TMP7"
#define IBM_NAME_THERMAL_UPDT "UPDT"
+#define IBM_NAME_PRIVACYGUARD_GET "GSSS"
+#define IBM_NAME_PRIVACYGUARD_SET "SSSS"
#define IBM_NAME_EVENTS_STATUS_GET "DHKC"
#define IBM_NAME_EVENTS_MASK_GET "DHKN"
@@ -146,6 +149,10 @@
#define IBM_EVENT_MUTE 0x17
#define IBM_EVENT_ACCESS_IBM_BUTTON 0x18
+/* Device-specific register flags */
+#define IBM_FLAG_PRIVACYGUARD_DEVICE_PRESENT 0x10000
+#define IBM_FLAG_PRIVACYGUARD_ON 0x1
+
#define ABS(x) (((x) < 0)? -(x) : (x))
struct acpi_ibm_softc {
@@ -268,6 +275,11 @@
.method = ACPI_IBM_METHOD_MIC_LED,
.description = "Mic led",
},
+ {
+ .name = "privacyguard",
+ .method = ACPI_IBM_METHOD_PRIVACYGUARD,
+ .description = "PrivacyGuard enable",
+ },
{ NULL, 0, NULL, 0 }
};
@@ -327,6 +339,9 @@
static int acpi_ibm_thinklight_set(struct acpi_ibm_softc *sc, int arg);
static int acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg);
static int acpi_ibm_mute_set(struct acpi_ibm_softc *sc, int arg);
+static int acpi_ibm_privacyguard_get(struct acpi_ibm_softc *sc);
+static ACPI_STATUS acpi_ibm_privacyguard_set(struct acpi_ibm_softc *sc, int arg);
+static ACPI_STATUS acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc *sc, bool write, int *arg);
static device_method_t acpi_ibm_methods[] = {
/* Device interface */
@@ -821,6 +836,11 @@
else
val = -1;
break;
+
+ case ACPI_IBM_METHOD_PRIVACYGUARD:
+ val = acpi_ibm_privacyguard_get(sc);
+ break;
+
}
return (val);
@@ -877,6 +897,10 @@
return acpi_ibm_bluetooth_set(sc, arg);
break;
+ case ACPI_IBM_METHOD_PRIVACYGUARD:
+ return (ACPI_SUCCESS(acpi_ibm_privacyguard_set(sc, arg)) ? 0 : ENODEV);
+ break;
+
case ACPI_IBM_METHOD_FANLEVEL:
if (arg < 0 || arg > 7)
return (EINVAL);
@@ -1008,6 +1032,10 @@
case ACPI_IBM_METHOD_HANDLEREVENTS:
return (TRUE);
+
+ case ACPI_IBM_METHOD_PRIVACYGUARD:
+ return (acpi_ibm_privacyguard_get(sc) != -1);
+
}
return (FALSE);
}
@@ -1225,6 +1253,60 @@
return (0);
}
+/*
+ * Helper function to make a get or set ACPI call to the PrivacyGuard handle.
+ * Only meant to be used internally by the get/set functions below.
+ */
+static ACPI_STATUS
+acpi_ibm_privacyguard_acpi_call(struct acpi_ibm_softc *sc, bool write, int *arg) {
+ ACPI_OBJECT Arg;
+ ACPI_OBJECT_LIST Args;
+ ACPI_STATUS status;
+ ACPI_OBJECT out_obj;
+ ACPI_BUFFER result;
+
+ Arg.Type = ACPI_TYPE_INTEGER;
+ Arg.Integer.Value = (write ? *arg : 0);
+ Args.Count = 1;
+ Args.Pointer = &Arg;
+ result.Length = sizeof(out_obj);
+ result.Pointer = &out_obj;
+
+ status = AcpiEvaluateObject(sc->handle,
+ (write ? IBM_NAME_PRIVACYGUARD_SET : IBM_NAME_PRIVACYGUARD_GET),
+ &Args, &result);
+ if (ACPI_SUCCESS(status) && !write)
+ *arg = out_obj.Integer.Value;
+
+ return (status);
+}
+
+/*
+ * Returns -1 if the device is not present.
+ */
+static int
+acpi_ibm_privacyguard_get(struct acpi_ibm_softc *sc)
+{
+ ACPI_STATUS status;
+ int val;
+
+ status = acpi_ibm_privacyguard_acpi_call(sc, false, &val);
+ if (ACPI_SUCCESS(status) &&
+ (val & IBM_FLAG_PRIVACYGUARD_DEVICE_PRESENT))
+ return (val & IBM_FLAG_PRIVACYGUARD_ON);
+
+ return (-1);
+}
+
+static ACPI_STATUS
+acpi_ibm_privacyguard_set(struct acpi_ibm_softc *sc, int arg)
+{
+ if (arg < 0 || arg > 1)
+ return (EINVAL);
+
+ return (acpi_ibm_privacyguard_acpi_call(sc, true, &arg));
+}
+
static int
acpi_ibm_volume_set(struct acpi_ibm_softc *sc, int arg)
{

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