[PATCH 63/72] drm_modes: videomode: add pos/neg pixel clock polarity flag

[Steve Longerbeam]

Signed-off-by: Steve Longerbeam <steve_longerbeam at mentor.com>
---
 drivers/gpu/drm/drm_modes.c |    4 ++++
 include/uapi/drm/drm_mode.h |    4 ++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index d1b7d20..5016099 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -611,6 +611,10 @@ void drm_display_mode_from_videomode(const struct 
videomode *vm,
                dmode->flags |= DRM_MODE_FLAG_DBLSCAN;
        if (vm->flags & DISPLAY_FLAGS_DOUBLECLK)
                dmode->flags |= DRM_MODE_FLAG_DBLCLK;
+       if (vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE)
+               dmode->flags |= DRM_MODE_FLAG_PCLK;
+       else if (vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
+               dmode->flags |= DRM_MODE_FLAG_NCLK;
        drm_mode_set_name(dmode);
 }
 EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode);
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 8d98cd0..d5d045c 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -72,6 +72,10 @@
 #define  DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH        (6<<14)
 #define  DRM_MODE_FLAG_3D_TOP_AND_BOTTOM       (7<<14)
 #define  DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF    (8<<14)
+/* drive data on rising pixclk edge */
+#define DRM_MODE_FLAG_PCLK                     (1<<19)
+/* drive data on falling pixclk edge */
+#define DRM_MODE_FLAG_NCLK                     (1<<20)


 /* DPMS flags */
-- 
1.7.9.5