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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/gma500/backlight.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/gma500/backlight.c')
-rw-r--r--kernel/drivers/gpu/drm/gma500/backlight.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/gma500/backlight.c b/kernel/drivers/gpu/drm/gma500/backlight.c
new file mode 100644
index 000000000..ea7dfc59d
--- /dev/null
+++ b/kernel/drivers/gpu/drm/gma500/backlight.c
@@ -0,0 +1,94 @@
+/*
+ * GMA500 Backlight Interface
+ *
+ * Copyright (c) 2009-2011, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Authors: Eric Knopp
+ *
+ */
+
+#include "psb_drv.h"
+#include "psb_intel_reg.h"
+#include "psb_intel_drv.h"
+#include "intel_bios.h"
+#include "power.h"
+
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+static void do_gma_backlight_set(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ backlight_update_status(dev_priv->backlight_device);
+}
+#endif
+
+void gma_backlight_enable(struct drm_device *dev)
+{
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ dev_priv->backlight_enabled = true;
+ if (dev_priv->backlight_device) {
+ dev_priv->backlight_device->props.brightness = dev_priv->backlight_level;
+ do_gma_backlight_set(dev);
+ }
+#endif
+}
+
+void gma_backlight_disable(struct drm_device *dev)
+{
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ dev_priv->backlight_enabled = false;
+ if (dev_priv->backlight_device) {
+ dev_priv->backlight_device->props.brightness = 0;
+ do_gma_backlight_set(dev);
+ }
+#endif
+}
+
+void gma_backlight_set(struct drm_device *dev, int v)
+{
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ dev_priv->backlight_level = v;
+ if (dev_priv->backlight_device && dev_priv->backlight_enabled) {
+ dev_priv->backlight_device->props.brightness = v;
+ do_gma_backlight_set(dev);
+ }
+#endif
+}
+
+int gma_backlight_init(struct drm_device *dev)
+{
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ dev_priv->backlight_enabled = true;
+ return dev_priv->ops->backlight_init(dev);
+#else
+ return 0;
+#endif
+}
+
+void gma_backlight_exit(struct drm_device *dev)
+{
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ if (dev_priv->backlight_device) {
+ dev_priv->backlight_device->props.brightness = 0;
+ backlight_update_status(dev_priv->backlight_device);
+ backlight_device_unregister(dev_priv->backlight_device);
+ }
+#endif
+}