Index: dev/acpi/acpi_display.c
===================================================================
RCS file: /cvsroot/src/sys/dev/acpi/acpi_display.c,v
retrieving revision 1.15
diff -p -u -r1.15 acpi_display.c
--- dev/acpi/acpi_display.c 3 Apr 2016 10:32:47 -0000 1.15
+++ dev/acpi/acpi_display.c 29 Dec 2016 05:21:38 -0000
@@ -353,6 +353,7 @@ static int acpidisp_out_sysctl_status(SY
static int acpidisp_out_sysctl_state(SYSCTLFN_PROTO);
#endif
static int acpidisp_out_sysctl_brightness(SYSCTLFN_PROTO);
+static int acpidisp_out_sysctl_levels(SYSCTLFN_PROTO);
static struct acpidisp_odinfo *
acpidisp_init_odinfo(const struct acpidisp_vga_softc *);
@@ -1183,6 +1184,12 @@ acpidisp_out_sysctl_setup(struct acpidis
SYSCTL_DESCR("Current brightness level"),
acpidisp_out_sysctl_brightness, 0, (void *)osc, 0,
CTL_CREATE, CTL_EOL);
+
+ (void)sysctl_createv(&osc->sc_log, 0, &rnode, NULL,
+ CTLFLAG_READONLY, CTLTYPE_STRING, "levels",
+ SYSCTL_DESCR("Brightness levels"),
+ acpidisp_out_sysctl_levels, 0, (void *)osc, 0,
+ CTL_CREATE, CTL_EOL);
}
#ifdef ACPI_DISP_SWITCH_SYSCTLS
@@ -1381,6 +1388,51 @@ acpidisp_out_sysctl_brightness(SYSCTLFN_
return error;
}
+static int
+acpidisp_out_sysctl_levels(SYSCTLFN_ARGS)
+{
+ struct acpidisp_out_softc *osc;
+ struct acpidisp_brctl *bc;
+ char buf[10], *where;
+ size_t len, left, needed;
+ const char *sep;
+ int i, error = 0;
+
+ if (newp != NULL)
+ return EPERM;
+ if (namelen != 0 || oldlenp == NULL)
+ return EINVAL;
+
+ osc = rnode->sysctl_data;
+ bc = osc->sc_brctl;
+
+ if (bc == NULL)
+ return EINVAL;
+
+ where = oldp;
+ left = *oldlenp;
+ needed = 0;
+ sep = "";
+ for (i = 0; i < bc->bc_level_count; i++) {
+ len = snprintf(buf, sizeof(buf), "%s%u",
+ sep, bc->bc_level[i]);
+ sep = " ";
+ needed += len;
+ if (oldp == NULL || error)
+ continue;
+ if (left < len + 1) {
+ error = ENOMEM;
+ } else {
+ error = copyout(buf, where, len + 1);
+ where += len;
+ left -= len;
+ }
+ }
+ *oldlenp = needed;
+
+ return error;
+}
+
/*
* Initialization of acpidisp_odinfo (_DOD) and acpidisp_brctl (_BCL).
*/
