OMAP: DSS2: OMAPFB: implement OMAPFB_GET_DISPLAY_INFO

Previously the only place to get the size of the display was from the
DSS's sysfs interface, making, for example, configuring overlays and doing
updates on manual displays more difficult.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/video/omap2/omapfb/omapfb-ioctl.c b/drivers/video/omap2/omapfb/omapfb-ioctl.c
index 4c4bafdfaa43..33fc1459a7c9 100644
--- a/drivers/video/omap2/omapfb/omapfb-ioctl.c
+++ b/drivers/video/omap2/omapfb/omapfb-ioctl.c
@@ -483,6 +483,7 @@ int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
                 struct omapfb_memory_read       memory_read;
                 struct omapfb_vram_info         vram_info;
                 struct omapfb_tearsync_info     tearsync_info;
+                struct omapfb_display_info      display_info;
         } p;
 
         int r = 0;
@@ -741,6 +742,29 @@ int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
                 break;
         }
 
+        case OMAPFB_GET_DISPLAY_INFO: {
+                u16 xres, yres;
+
+                DBG("ioctl GET_DISPLAY_INFO\n");
+
+                if (display == NULL) {
+                        r = -ENODEV;
+                        break;
+                }
+
+                display->get_resolution(display, &xres, &yres);
+
+                p.display_info.xres = xres;
+                p.display_info.yres = yres;
+                p.display_info.width = 0;
+                p.display_info.height = 0;
+
+                if (copy_to_user((void __user *)arg, &p.display_info,
+                                        sizeof(p.display_info)))
+                        r = -EFAULT;
+                break;
+        }
+
         default:
                 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
                 r = -EINVAL;