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path: root/drivers/gpu/drm/tegra/dc.c
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Diffstat (limited to 'drivers/gpu/drm/tegra/dc.c')
-rw-r--r--drivers/gpu/drm/tegra/dc.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 074410371e2a..656b2e3334a6 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -102,12 +102,12 @@ static int tegra_dc_set_timings(struct tegra_dc *dc,
((mode->hsync_end - mode->hsync_start) << 0);
tegra_dc_writel(dc, value, DC_DISP_SYNC_WIDTH);
- value = ((mode->vsync_start - mode->vdisplay) << 16) |
- ((mode->hsync_start - mode->hdisplay) << 0);
- tegra_dc_writel(dc, value, DC_DISP_BACK_PORCH);
-
value = ((mode->vtotal - mode->vsync_end) << 16) |
((mode->htotal - mode->hsync_end) << 0);
+ tegra_dc_writel(dc, value, DC_DISP_BACK_PORCH);
+
+ value = ((mode->vsync_start - mode->vdisplay) << 16) |
+ ((mode->hsync_start - mode->hdisplay) << 0);
tegra_dc_writel(dc, value, DC_DISP_FRONT_PORCH);
value = (mode->vdisplay << 16) | mode->hdisplay;
@@ -221,8 +221,7 @@ static int tegra_crtc_mode_set(struct drm_crtc *crtc,
win.stride = crtc->fb->pitches[0];
/* program window registers */
- value = tegra_dc_readl(dc, DC_CMD_DISPLAY_WINDOW_HEADER);
- value |= WINDOW_A_SELECT;
+ value = WINDOW_A_SELECT;
tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER);
tegra_dc_writel(dc, win.fmt, DC_WIN_COLOR_DEPTH);
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