Adding support to rotation on blizzard

[linux-2.6-omap-h63xx.git] / drivers / video / omap / blizzard.c

diff --git a/drivers/video/omap/blizzard.c b/drivers/video/omap/blizzard.c
index 4d8ad9cd0e19701c0b8c15135ac08610680f107d..82571eef1f702e298e259205b9c2f8346dc1a9b3 100644 (file)
--- a/drivers/video/omap/blizzard.c
+++ b/drivers/video/omap/blizzard.c
@@ -44,6 +44,7 @@
 #define BLIZZARD_CLK_SRC                       0x0e
 #define BLIZZARD_MEM_BANK0_ACTIVATE            0x10
 #define BLIZZARD_MEM_BANK0_STATUS              0x14
+#define BLIZZARD_PANEL_CONFIGURATION           0x28
 #define BLIZZARD_HDISP                         0x2a
 #define BLIZZARD_HNDP                          0x2c
 #define BLIZZARD_VDISP0                                0x2e
@@ -908,6 +909,35 @@ static int blizzard_set_scale(int plane, int orig_w, int orig_h,
        return 0;
 }
 
+static int blizzard_set_rotate(int angle)
+{
+       u32 l;
+
+       l = blizzard_read_reg(BLIZZARD_PANEL_CONFIGURATION);
+       l &= ~0x03;
+
+       switch (angle) {
+       case 0:
+               l = l | 0x00;
+               break;
+       case 90:
+               l = l | 0x03;
+               break;
+       case 180:
+               l = l | 0x02;
+               break;
+       case 270:
+               l = l | 0x01;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       blizzard_write_reg(BLIZZARD_PANEL_CONFIGURATION, l);
+
+       return 0;
+}
+
 static int blizzard_enable_plane(int plane, int enable)
 {
        if (enable)
@@ -1285,7 +1315,8 @@ static void blizzard_get_caps(int plane, struct omapfb_caps *caps)
        caps->ctrl |= OMAPFB_CAPS_MANUAL_UPDATE |
                OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE |
                OMAPFB_CAPS_WINDOW_SCALE |
-               OMAPFB_CAPS_WINDOW_OVERLAY;
+               OMAPFB_CAPS_WINDOW_OVERLAY |
+               OMAPFB_CAPS_WINDOW_ROTATE;
        if (blizzard.te_connected)
                caps->ctrl |= OMAPFB_CAPS_TEARSYNC;
        caps->wnd_color |= (1 << OMAPFB_COLOR_RGB565) |
@@ -1560,6 +1591,7 @@ struct lcd_ctrl blizzard_ctrl = {
        .setup_plane            = blizzard_setup_plane,
        .set_scale              = blizzard_set_scale,
        .enable_plane           = blizzard_enable_plane,
+       .set_rotate             = blizzard_set_rotate,
        .update_window          = blizzard_update_window_async,
        .sync                   = blizzard_sync,
        .suspend                = blizzard_suspend,