1 files changed, 90 insertions, 0 deletions

diff --git a/drivers/gpu/drm/gma500/psb_lid.c b/drivers/gpu/drm/gma500/psb_lid.c
new file mode 100644
index 000000000000..af328516561e
--- /dev/null
+++ b/drivers/gpu/drm/gma500/psb_lid.c
@@ -0,0 +1,90 @@
+/**************************************************************************
+ * Copyright (c) 2007, 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: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
+ **************************************************************************/
+
+#include <drm/drmP.h>
+#include "psb_drv.h"
+#include "psb_reg.h"
+#include "psb_intel_reg.h"
+#include <linux/spinlock.h>
+
+static void psb_lid_timer_func(unsigned long data)
+{
+        struct drm_psb_private * dev_priv = (struct drm_psb_private *)data;
+        struct drm_device *dev = (struct drm_device *)dev_priv->dev;
+        struct timer_list *lid_timer = &dev_priv->lid_timer;
+        unsigned long irq_flags;
+        u32 *lid_state = dev_priv->lid_state;
+        u32 pp_status;
+
+        if (readl(lid_state) == dev_priv->lid_last_state)
+                goto lid_timer_schedule;
+
+        if ((readl(lid_state)) & 0x01) {
+                /*lid state is open*/
+                REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) | POWER_TARGET_ON);
+                do {
+                        pp_status = REG_READ(PP_STATUS);
+                } while ((pp_status & PP_ON) == 0);
+
+                /*FIXME: should be backlight level before*/
+                psb_intel_lvds_set_brightness(dev, 100);
+        } else {
+                psb_intel_lvds_set_brightness(dev, 0);
+
+                REG_WRITE(PP_CONTROL, REG_READ(PP_CONTROL) & ~POWER_TARGET_ON);
+                do {
+                        pp_status = REG_READ(PP_STATUS);
+                } while ((pp_status & PP_ON) == 0);
+        }
+                /* printk(KERN_INFO"%s: lid: closed\n", __FUNCTION__); */
+
+        dev_priv->lid_last_state =  readl(lid_state);
+
+lid_timer_schedule:
+        spin_lock_irqsave(&dev_priv->lid_lock, irq_flags);
+        if (!timer_pending(lid_timer)) {
+                lid_timer->expires = jiffies + PSB_LID_DELAY;
+                add_timer(lid_timer);
+        }
+        spin_unlock_irqrestore(&dev_priv->lid_lock, irq_flags);
+}
+
+void psb_lid_timer_init(struct drm_psb_private *dev_priv)
+{
+        struct timer_list *lid_timer = &dev_priv->lid_timer;
+        unsigned long irq_flags;
+
+        spin_lock_init(&dev_priv->lid_lock);
+        spin_lock_irqsave(&dev_priv->lid_lock, irq_flags);
+
+        init_timer(lid_timer);
+
+        lid_timer->data = (unsigned long)dev_priv;
+        lid_timer->function = psb_lid_timer_func;
+        lid_timer->expires = jiffies + PSB_LID_DELAY;
+
+        add_timer(lid_timer);
+        spin_unlock_irqrestore(&dev_priv->lid_lock, irq_flags);
+}
+
+void psb_lid_timer_takedown(struct drm_psb_private *dev_priv)
+{
+        del_timer_sync(&dev_priv->lid_timer);
+}
+