[PATCH] drm: bridge/dw-hdmi: Fix colorspace and scan information registers values

From: Jose Abreu
Date: Thu Aug 18 2016 - 10:41:20 EST


Colorspace and scan information values were being written in wrong
offsets. This patch corrects this and writes the values at the
offsets specified in the databook.

Signed-off-by: Jose Abreu <joabreu@xxxxxxxxxxxx>
Cc: Carlos Palminha <palminha@xxxxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
drivers/gpu/drm/bridge/dw-hdmi.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c
index 77ab473..cdf39aa 100644
--- a/drivers/gpu/drm/bridge/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/dw-hdmi.c
@@ -940,10 +940,11 @@ static void hdmi_config_AVI(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
*/

/*
- * AVI data byte 1 differences: Colorspace in bits 4,5 rather than 5,6,
- * active aspect present in bit 6 rather than 4.
+ * AVI data byte 1 differences: Colorspace in bits 0,1 rather than 5,6,
+ * scan info in bits 4,5 rather than 0,1 and active aspect present in
+ * bit 6 rather than 4.
*/
- val = (frame.colorspace & 3) << 4 | (frame.scan_mode & 0x3);
+ val = (frame.scan_mode & 3) << 4 | (frame.colorspace & 3);
if (frame.active_aspect & 15)
val |= HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT;
if (frame.top_bar || frame.bottom_bar)
--
2.1.4