From e6d2918173d88cf85752ec574d989fba5b29c895 Mon Sep 17 00:00:00 2001
From: iwasaki <iwasaki@FreeBSD.org>
Date: Tue, 5 Jan 2010 20:29:30 +0000
Subject: [PATCH] Update acpi_ibm syctl nodes on resume.

This should fix some Thinkpad specific problems such as
connecting to a headphone jack is not functional on X41.

Reviewed by:	takawata
MFC after:	1 week
---
 sys/dev/acpi_support/acpi_ibm.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/sys/dev/acpi_support/acpi_ibm.c b/sys/dev/acpi_support/acpi_ibm.c
index 25db9b0be961..22899820b1fa 100644
--- a/sys/dev/acpi_support/acpi_ibm.c
+++ b/sys/dev/acpi_support/acpi_ibm.c
@@ -255,6 +255,7 @@ ACPI_SERIAL_DECL(ibm, "ACPI IBM extras");
 static int	acpi_ibm_probe(device_t dev);
 static int	acpi_ibm_attach(device_t dev);
 static int	acpi_ibm_detach(device_t dev);
+static int	acpi_ibm_resume(device_t dev);
 
 static void	ibm_led(void *softc, int onoff);
 static void	ibm_led_task(struct acpi_ibm_softc *sc, int pending __unused);
@@ -273,6 +274,7 @@ static device_method_t acpi_ibm_methods[] = {
 	DEVMETHOD(device_probe, acpi_ibm_probe),
 	DEVMETHOD(device_attach, acpi_ibm_attach),
 	DEVMETHOD(device_detach, acpi_ibm_detach),
+	DEVMETHOD(device_resume, acpi_ibm_resume),
 
 	{0, 0}
 };
@@ -434,6 +436,34 @@ acpi_ibm_detach(device_t dev)
 	return (0);
 }
 
+static int
+acpi_ibm_resume(device_t dev)
+{
+	struct acpi_ibm_softc *sc = device_get_softc(dev);
+
+	ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
+
+	ACPI_SERIAL_BEGIN(ibm);
+	for (int i = 0; acpi_ibm_sysctls[i].name != NULL; i++) {
+		int val;
+
+		if ((acpi_ibm_sysctls[i].access & CTLFLAG_RD) == 0) {
+			continue;
+		}
+
+		val = acpi_ibm_sysctl_get(sc, i);
+
+		if ((acpi_ibm_sysctls[i].access & CTLFLAG_WR) == 0) {
+			continue;
+		}
+
+		acpi_ibm_sysctl_set(sc, i, val);
+	}
+	ACPI_SERIAL_END(ibm);
+
+	return (0);
+}
+
 static int
 acpi_ibm_eventmask_set(struct acpi_ibm_softc *sc, int val)
 {