The patch corrects porch calculation. It should
be calculated as a difference between adjacent
respective fields of drm_display_mode.
Signed-off-by: Andrzej Hajda <a.ha...@samsung.com>
Reviewed-by: Daniel Kurtz <djku...@chromium.org>
---
drivers/gpu/drm/exynos/exynos_drm_fimd.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index f78fbf4..10431b0 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -221,7 +221,7 @@ static void fimd_commit(struct exynos_drm_manager *mgr)
struct drm_display_mode *mode = &ctx->mode;
struct fimd_driver_data *driver_data;
u32 val, clkdiv, vidcon1;
- int hblank, vblank, vsync_len, vbpd, vfpd, hsync_len, hbpd, hfpd;
+ int vsync_len, vbpd, vfpd, hsync_len, hbpd, hfpd;
driver_data = ctx->driver_data;
if (ctx->suspended)
@@ -240,10 +240,9 @@ static void fimd_commit(struct exynos_drm_manager *mgr)
writel(vidcon1, ctx->regs + driver_data->timing_base + VIDCON1);
/* setup vertical timing values. */
- vblank = mode->crtc_vblank_end - mode->crtc_vblank_start;
vsync_len = mode->crtc_vsync_end - mode->crtc_vsync_start;
- vbpd = (vblank - vsync_len) / 2;
- vfpd = vblank - vsync_len - vbpd;
+ vbpd = mode->crtc_vtotal - mode->crtc_vsync_end;
+ vfpd = mode->crtc_vsync_start - mode->crtc_vdisplay;
val = VIDTCON0_VBPD(vbpd - 1) |
VIDTCON0_VFPD(vfpd - 1) |
@@ -251,10 +250,9 @@ static void fimd_commit(struct exynos_drm_manager *mgr)
writel(val, ctx->regs + driver_data->timing_base + VIDTCON0);
/* setup horizontal timing values. */
- hblank = mode->crtc_hblank_end - mode->crtc_hblank_start;
hsync_len = mode->crtc_hsync_end - mode->crtc_hsync_start;
- hbpd = (hblank - hsync_len) / 2;
- hfpd = hblank - hsync_len - hbpd;
+ hbpd = mode->crtc_htotal - mode->crtc_hsync_end;
+ hfpd = mode->crtc_hsync_start - mode->crtc_hdisplay;
val = VIDTCON1_HBPD(hbpd - 1) |
VIDTCON1_HFPD(hfpd - 1) |
--
1.8.3.2
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