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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: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
This commit is contained in:
Eugeniy Paltsev 2019-11-19 17:41:44 +03:00 committed by Alexey Brodkin
parent d1eef1c619
commit 4c5b36ee73
1 changed files with 7 additions and 5 deletions
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12
drivers/gpu/drm/arc/arcpgu_crtc.c
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@ -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 = {