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drm: tegra: fix front_porch <-> back_porch mixup

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Fixes wrong picture offset observed when using HDMI output with a
Technisat HD TV.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Mark Zhang <markz@nvidia.com>
Tested-by: Mark Zhang <markz@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Lucas Stach 2012-12-19 21:38:52 +00:00 committed by Dave Airlie
parent 8be0e5c427
commit 4049508988
2 changed files with 7 additions and 7 deletions
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8
drivers/gpu/drm/tegra/dc.c
View File

@ -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;

6
drivers/gpu/drm/tegra/hdmi.c
View File

@ -479,7 +479,7 @@ static void tegra_hdmi_setup_avi_infoframe(struct tegra_hdmi *hdmi,
return;
}
h_front_porch = mode->htotal - mode->hsync_end;
h_front_porch = mode->hsync_start - mode->hdisplay;
memset(&frame, 0, sizeof(frame));
frame.r = HDMI_AVI_R_SAME;
@ -634,8 +634,8 @@ static int tegra_output_hdmi_enable(struct tegra_output *output)
pclk = mode->clock * 1000;
h_sync_width = mode->hsync_end - mode->hsync_start;
h_front_porch = mode->htotal - mode->hsync_end;
h_back_porch = mode->hsync_start - mode->hdisplay;
h_back_porch = mode->htotal - mode->hsync_end;
h_front_porch = mode->hsync_start - mode->hdisplay;
err = regulator_enable(hdmi->vdd);
if (err < 0) {