Current implementation don't switch to RGB565 format if BGR888 was
previously used. Fix that.
Signed-off-by: Eugeniy Paltsev <eugeniy.palt...@synopsys.com>
---
drivers/gpu/drm/arc/arcpgu_crtc.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/arc/arcpgu_crtc.c
b/drivers/gpu/drm/arc/arcpgu_crtc.c
index dfaddbb7da0d..31d9824c46cc 100644
--- a/drivers/gpu/drm/arc/arcpgu_crtc.c
+++ b/drivers/gpu/drm/arc/arcpgu_crtc.c
@@ -32,6 +32,7 @@ static void arc_pgu_set_pxl_fmt(struct drm_crtc *crtc)
uint32_t pixel_format = fb->format->format;
struct simplefb_format *format = NULL;
int i;
+ u32 reg_ctrl;
for (i = 0; i < ARRAY_SIZE(supported_formats); i++) {
if (supported_formats[i].fourcc == pixel_format)
@@ -41,11 +42,12 @@ static void arc_pgu_set_pxl_fmt(struct drm_crtc *crtc)
if (WARN_ON(!format))
return;
- if (format->fourcc == DRM_FORMAT_RGB888)
- arc_pgu_write(arcpgu, ARCPGU_REG_CTRL,
- arc_pgu_read(arcpgu, ARCPGU_REG_CTRL) |
- ARCPGU_MODE_RGB888_MASK);
-
+ reg_ctrl = arc_pgu_read(arcpgu, ARCPGU_REG_CTRL);
+ if (format->fourcc == DRM_FORMAT_RGB565)
+ reg_ctrl &= ~ARCPGU_MODE_RGB888_MASK;
+ else
+ reg_ctrl |= ARCPGU_MODE_RGB888_MASK;
+ arc_pgu_write(arcpgu, ARCPGU_REG_CTRL, reg_ctrl);
}
static const struct drm_crtc_funcs arc_pgu_crtc_funcs = {
--
2.21.0
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