[PATCH v4 08/13] drm: bridge: icn6211: Disable DPI color swap

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The chip is capable of swapping DPI RGB channels. The driver currently
does not implement support for this functionality. Write the MIPI_PN_SWAP
register to 0 to assure the color swap is disabled.

Acked-by: Maxime Ripard <maxime@xxxxxxxxxx>
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
Cc: Maxime Ripard <maxime@xxxxxxxxxx>
Cc: Robert Foss <robert.foss@xxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
To: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
V2: Rebase on next-20220214
V3: Add AB from Maxime
V4: No change
---
 drivers/gpu/drm/bridge/chipone-icn6211.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/chipone-icn6211.c b/drivers/gpu/drm/bridge/chipone-icn6211.c
index b3212f3387615..11c5a1553e7e0 100644
--- a/drivers/gpu/drm/bridge/chipone-icn6211.c
+++ b/drivers/gpu/drm/bridge/chipone-icn6211.c
@@ -302,6 +302,7 @@ static void chipone_atomic_enable(struct drm_bridge *bridge,
 
 	ICN6211_DSI(icn, MIPI_PD_CK_LANE, 0xa0);
 	ICN6211_DSI(icn, PLL_CTRL(12), 0xff);
+	ICN6211_DSI(icn, MIPI_PN_SWAP, 0x00);
 
 	/* DPI HS/VS/DE polarity */
 	pol = ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? BIST_POL_HSYNC_POL : 0) |
-- 
2.34.1




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