[PATCH 3/4] DRM: ARC: PGU: replace unsupported by HW RGB888 format by XRGB888

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ARC PGU doesn't support RGB888 (24 bit) format but supports
XRGB888 (32 bit) format. Fix incorrect format list in a driver.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@xxxxxxxxxxxx>
---
 drivers/gpu/drm/arc/arcpgu_crtc.c | 6 +++---
 drivers/gpu/drm/arc/arcpgu_regs.h | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/arc/arcpgu_crtc.c b/drivers/gpu/drm/arc/arcpgu_crtc.c
index 5473b19a52ee..980e00180e6f 100644
--- a/drivers/gpu/drm/arc/arcpgu_crtc.c
+++ b/drivers/gpu/drm/arc/arcpgu_crtc.c
@@ -22,7 +22,7 @@
 
 static const u32 arc_pgu_supported_formats[] = {
 	DRM_FORMAT_RGB565,
-	DRM_FORMAT_RGB888,
+	DRM_FORMAT_XRGB8888,
 };
 
 static void arc_pgu_set_pxl_fmt(struct drm_crtc *crtc)
@@ -44,9 +44,9 @@ static void arc_pgu_set_pxl_fmt(struct drm_crtc *crtc)
 
 	reg_ctrl = arc_pgu_read(arcpgu, ARCPGU_REG_CTRL);
 	if (format == DRM_FORMAT_RGB565)
-		reg_ctrl &= ~ARCPGU_MODE_RGB888_MASK;
+		reg_ctrl &= ~ARCPGU_MODE_XRGB8888;
 	else
-		reg_ctrl |= ARCPGU_MODE_RGB888_MASK;
+		reg_ctrl |= ARCPGU_MODE_XRGB8888;
 	arc_pgu_write(arcpgu, ARCPGU_REG_CTRL, reg_ctrl);
 }
 
diff --git a/drivers/gpu/drm/arc/arcpgu_regs.h b/drivers/gpu/drm/arc/arcpgu_regs.h
index dab2c380f7f3..b689a382d556 100644
--- a/drivers/gpu/drm/arc/arcpgu_regs.h
+++ b/drivers/gpu/drm/arc/arcpgu_regs.h
@@ -25,7 +25,7 @@
 #define ARCPGU_CTRL_VS_POL_OFST	0x3
 #define ARCPGU_CTRL_HS_POL_MASK	0x1
 #define ARCPGU_CTRL_HS_POL_OFST	0x4
-#define ARCPGU_MODE_RGB888_MASK	0x04
+#define ARCPGU_MODE_XRGB8888	BIT(2)
 #define ARCPGU_STAT_BUSY_MASK	0x02
 
 #endif
-- 
2.21.0

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