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| author | Andrew Bresticker <abrestic@chromium.org> | 2014-04-22 04:09:10 +0530 |
|---|---|---|
| committer | Inki Dae <daeinki@gmail.com> | 2014-06-02 02:07:05 +0900 |
| commit | b8b52471e87a713e61d26fa2f546fda0fb04e8fd (patch) | |
| tree | e9bdacf10aec08ea529220fbe76c43c0a2e1535f /drivers/gpu/drm/exynos/exynos_hdmi.c | |
| parent | fbc2063d7b76d58e47a74b845148b3a9db052f16 (diff) | |
| download | lwn-b8b52471e87a713e61d26fa2f546fda0fb04e8fd.tar.gz lwn-b8b52471e87a713e61d26fa2f546fda0fb04e8fd.zip | |
drm/exynos: dp: support hotplug detection via GPIO
Certain bridge chips use a GPIO to indicate the cable status instead
of the I_DP_HPD pin. This adds an optional device-tree property,
"samsung,hpd-gpio", to the exynos-dp controller which indicates that
the specified GPIO should be used for hotplug detection.
The GPIO is then set up as an edge-triggered interrupt where the
rising edge indicates hotplug-in and the falling edge indicates hotplug-out.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_hdmi.c')
0 files changed, 0 insertions, 0 deletions