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drm/exynos: correct timing porch conversion

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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.hajda@samsung.com>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Andrzej Hajda 2014-03-17 11:27:19 +01:00 committed by Inki Dae
parent 8e527f0187
commit 8b4cad2353
1 changed files with 5 additions and 7 deletions
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12
drivers/gpu/drm/exynos/exynos_drm_fimd.c
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@ -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) |