Commit 4c5b36ee authored by Eugeniy Paltsev's avatar Eugeniy Paltsev Committed by Alexey Brodkin
Browse files

DRM: ARC: PGU: fix framebuffer format switching 



Current implementation don't switch to RGB565 format if BGR888 was
previously used. Fix that.

Signed-off-by: default avatarEugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: default avatarAlexey Brodkin <abrodkin@synopsys.com>
parent d1eef1c6

drivers/gpu/drm/arc/arcpgu_crtc.c

+7 −5
Original line number Diff line number Diff line
@@ -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 = {

CRA Git | Maintained and supported by SUSTech CRA and CCSE