Check if sink is HDMI capable when enabling an output. This disables
HDMI audio/infoframes if we are talking to a plain DVI sink. All things
except this check are already in place.
Signed-off-by: Lucas Stach <d...@lynxeye.de>
---
drivers/gpu/drm/tegra/hdmi.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
index e060c7e..3405313 100644
--- a/drivers/gpu/drm/tegra/hdmi.c
+++ b/drivers/gpu/drm/tegra/hdmi.c
@@ -660,6 +660,9 @@ static int tegra_output_hdmi_enable(struct tegra_output
*output)
usleep_range(1000, 2000);
tegra_periph_reset_deassert(hdmi->clk);
+ /* if the connected sink is not HDMI capable fall back to plain DVI */
+ hdmi->dvi = !drm_detect_hdmi_monitor(output->edid);
+
tegra_dc_writel(dc, VSYNC_H_POSITION(1),
DC_DISP_DISP_TIMING_OPTIONS);
tegra_dc_writel(dc, DITHER_CONTROL_DISABLE | BASE_COLOR_SIZE888,
--
1.8.0.2
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