OMAP: DSS2: HDMI: change regn definition

regn divider is currently programmed to the registers without change,
but when calculating clock frequencies it is used as regn+1.

To make this similar to how DSI handles the dividers this patch changes
the regn value to be used as such for calculations, but the value
programmed to registers is regn-1.

This simplifies the clock frequency calculations, makes it similar to
DSI, and also allows us to use regn value 0 as undefined.

Cc: Mythri P K <mythripk@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/video/omapdss.h b/include/video/omapdss.h
index 44f423ff64bd..c7cfdad81242 100644
--- a/include/video/omapdss.h
+++ b/include/video/omapdss.h
@@ -520,6 +520,7 @@ struct omap_dss_device {
                 } dsi;
 
                 struct {
+                        /* regn is one greater than TRM's REGN value */
                         u16 regn;
                         u16 regm2;
                 } hdmi;