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authorAntonino A. Daplas <adaplas@gmail.com>2005-11-09 08:39:15 +0300
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-09 18:56:35 +0300
commita812c94b94e3db76d1af68208fb3edef69070401 (patch)
tree8dd2ecd1e1981e3423d8c3aaf796aeb3f38f91f1 /drivers/video/fbsysfs.c
parented8c0e99f27451a9b980adf0de318d60e6de811f (diff)
downloadlinux-a812c94b94e3db76d1af68208fb3edef69070401.tar.xz
[PATCH] fbcon: Console Rotation - Add ability to control rotation via sysfs
Add ability to set rotation via sysfs. The attributes are located in /sys/class/graphics/fb[n] and accepts 0 - unrotated; 1 - clockwise; 2 - upside down; 3 - counterclockwise. The attributes are: con_rotate (r/w) - set rotation of the active console con_rotate_all (w) - set rotation of all consoles rotate (r/w) - set rotation of the framebuffer, if supported. Currently, none of the drivers support this. This is probably temporary, since con_rotate and con_rotate_all are console-specific and has no business being under the fb device. However, until the console layer acquires it's own sysfs class, these attributes will temporarily reside here. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/fbsysfs.c')
-rw-r--r--drivers/video/fbsysfs.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/video/fbsysfs.c b/drivers/video/fbsysfs.c
index 007c8e9b2b39..08dac9580d15 100644
--- a/drivers/video/fbsysfs.c
+++ b/drivers/video/fbsysfs.c
@@ -213,6 +213,70 @@ static ssize_t show_bpp(struct class_device *class_device, char *buf)
return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->var.bits_per_pixel);
}
+static ssize_t store_rotate(struct class_device *class_device, const char *buf,
+ size_t count)
+{
+ struct fb_info *fb_info = class_get_devdata(class_device);
+ struct fb_var_screeninfo var;
+ char **last = NULL;
+ int err;
+
+ var = fb_info->var;
+ var.rotate = simple_strtoul(buf, last, 0);
+
+ if ((err = activate(fb_info, &var)))
+ return err;
+
+ return count;
+}
+
+
+static ssize_t show_rotate(struct class_device *class_device, char *buf)
+{
+ struct fb_info *fb_info = class_get_devdata(class_device);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->var.rotate);
+}
+
+static ssize_t store_con_rotate(struct class_device *class_device,
+ const char *buf, size_t count)
+{
+ struct fb_info *fb_info = class_get_devdata(class_device);
+ int rotate;
+ char **last = NULL;
+
+ acquire_console_sem();
+ rotate = simple_strtoul(buf, last, 0);
+ fb_con_duit(fb_info, FB_EVENT_SET_CON_ROTATE, &rotate);
+ release_console_sem();
+ return count;
+}
+
+static ssize_t store_con_rotate_all(struct class_device *class_device,
+ const char *buf, size_t count)
+{
+ struct fb_info *fb_info = class_get_devdata(class_device);
+ int rotate;
+ char **last = NULL;
+
+ acquire_console_sem();
+ rotate = simple_strtoul(buf, last, 0);
+ fb_con_duit(fb_info, FB_EVENT_SET_CON_ROTATE_ALL, &rotate);
+ release_console_sem();
+ return count;
+}
+
+static ssize_t show_con_rotate(struct class_device *class_device, char *buf)
+{
+ struct fb_info *fb_info = class_get_devdata(class_device);
+ int rotate;
+
+ acquire_console_sem();
+ rotate = fb_con_duit(fb_info, FB_EVENT_GET_CON_ROTATE, NULL);
+ release_console_sem();
+ return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
+}
+
static ssize_t store_virtual(struct class_device *class_device,
const char * buf, size_t count)
{
@@ -440,6 +504,9 @@ static struct class_device_attribute class_device_attrs[] = {
__ATTR(virtual_size, S_IRUGO|S_IWUSR, show_virtual, store_virtual),
__ATTR(name, S_IRUGO, show_name, NULL),
__ATTR(stride, S_IRUGO, show_stride, NULL),
+ __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
+ __ATTR(con_rotate, S_IRUGO|S_IWUSR, show_con_rotate, store_con_rotate),
+ __ATTR(con_rotate_all, S_IWUSR, NULL, store_con_rotate_all),
};
int fb_init_class_device(struct fb_info *fb_info)