atmel_lcdfb: implement inverted contrast pwm

This patch introduces lcdc->lcdcon_pol_negative which set CONTRAST_CTR
 register to inverted polarity.

Signed-off-by: Andreas Bießmann <biessmann@corscience.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/video/atmel_lcdc.h b/include/video/atmel_lcdc.h
index 0c864db1a466..28447f1594fa 100644
--- a/include/video/atmel_lcdc.h
+++ b/include/video/atmel_lcdc.h
@@ -52,6 +52,7 @@ struct atmel_lcdfb_info {
         u8                      bl_power;
 #endif
         bool                    lcdcon_is_backlight;
+        bool                    lcdcon_pol_negative;
         u8                      saved_lcdcon;
 
         u8                      default_bpp;