Author: iwasaki
Date: Sun Jun 17 16:19:09 2012
New Revision: 237197
URL: http://svn.freebsd.org/changeset/base/237197
Log:
Resotre LCD brightness level on resuming.
MFC after: 3 days
Modified:
head/sys/dev/acpica/acpi_video.c
Modified: head/sys/dev/acpica/acpi_video.c
==============================================================================
--- head/sys/dev/acpica/acpi_video.c Sun Jun 17 13:48:39 2012
(r237196)
+++ head/sys/dev/acpica/acpi_video.c Sun Jun 17 16:19:09 2012
(r237197)
@@ -75,6 +75,7 @@ static void acpi_video_identify(driver_t
static int acpi_video_probe(device_t);
static int acpi_video_attach(device_t);
static int acpi_video_detach(device_t);
+static int acpi_video_resume(device_t);
static int acpi_video_shutdown(device_t);
static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *);
static void acpi_video_power_profile(void *);
@@ -155,6 +156,7 @@ static device_method_t acpi_video_method
DEVMETHOD(device_probe, acpi_video_probe),
DEVMETHOD(device_attach, acpi_video_attach),
DEVMETHOD(device_detach, acpi_video_detach),
+ DEVMETHOD(device_resume, acpi_video_resume),
DEVMETHOD(device_shutdown, acpi_video_shutdown),
{ 0, 0 }
};
@@ -305,6 +307,36 @@ acpi_video_detach(device_t dev)
}
static int
+acpi_video_resume(device_t dev)
+{
+ struct acpi_video_softc *sc;
+ struct acpi_video_output *vo, *vn;
+ int level;
+
+ sc = device_get_softc(dev);
+
+ /* Restore brightness level */
+ ACPI_SERIAL_BEGIN(video);
+ ACPI_SERIAL_BEGIN(video_output);
+ STAILQ_FOREACH_SAFE(vo, &sc->vid_outputs, vo_next, vn) {
+ if ((vo->adr & DOD_DEVID_MASK_FULL) != DOD_DEVID_LCD &&
+ (vo->adr & DOD_DEVID_MASK) != DOD_DEVID_INTDFP)
+ continue;
+
+ if ((vo_get_device_status(vo->handle) & DCS_ACTIVE) == 0)
+ continue;
+
+ level = vo_get_brightness(vo->handle);
+ if (level != -1)
+ vo_set_brightness(vo->handle, level);
+ }
+ ACPI_SERIAL_END(video_output);
+ ACPI_SERIAL_END(video);
+
+ return (0);
+}
+
+static int
acpi_video_shutdown(device_t dev)
{
struct acpi_video_softc *sc;
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