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From c78da49092fd206943f77aa9ebc3fa2c1301ac5a Mon Sep 17 00:00:00 2001
From: Tim Yamin <plasm@roo.me.uk>
Date: Thu, 23 Apr 2009 18:19:32 -0700
Subject: [PATCH] DSS2: Export display status to sysfs
It is useful to know from userspace if the display has been turned off,
e.g. to toggle display power from userspace.
Signed-off-by: Tim Yamin <plasm@roo.me.uk>
---
drivers/video/omap2/omapfb/omapfb-sysfs.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/drivers/video/omap2/omapfb/omapfb-sysfs.c b/drivers/video/omap2/omapfb/omapfb-sysfs.c
index 2c88718..28438fb 100644
--- a/drivers/video/omap2/omapfb/omapfb-sysfs.c
+++ b/drivers/video/omap2/omapfb/omapfb-sysfs.c
@@ -326,6 +326,15 @@ static ssize_t show_virt(struct device *dev,
return snprintf(buf, PAGE_SIZE, "%p\n", ofbi->region.vaddr);
}
+static ssize_t show_display_state(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct fb_info *fbi = dev_get_drvdata(dev);
+ struct omap_display *display = fb2display(fbi);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", display->state);
+}
+
static struct device_attribute omapfb_attrs[] = {
__ATTR(rotate_type, S_IRUGO, show_rotate_type, NULL),
__ATTR(mirror, S_IRUGO | S_IWUSR, show_mirror, store_mirror),
@@ -333,6 +342,7 @@ static struct device_attribute omapfb_attrs[] = {
__ATTR(overlays, S_IRUGO | S_IWUSR, show_overlays, store_overlays),
__ATTR(phys_addr, S_IRUGO, show_phys, NULL),
__ATTR(virt_addr, S_IRUGO, show_virt, NULL),
+ __ATTR(display_state, S_IRUGO, show_display_state, NULL),
};
int omapfb_create_sysfs(struct omapfb2_device *fbdev)
--
1.5.6.3
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