This update eases to understand the VTG programming.
It also sets a VTG output id for each supported connectors.
Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
None of these exported symbols are used outside of the drm-sti driver,
so there is no reason to export them.
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Vincent Abriou <vincent.abriou@st.com>
There's no use building the individual drivers as separate modules
because they are all only useful if combined into a single DRM/KMS
device.
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Vincent Abriou <vincent.abriou@st.com>
Non-legacy drivers should only use this API to allow per-CRTC data to be
eventually moved into struct drm_crtc.
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Vincent Abriou <vincent.abriou@st.com>
HDMI analyzer tests showed that Vsync and Hsync signal were not
compliant with the HDMI protocol.
HDMI_DELAY should be taken into account in the VTG Vsync
programming to reflect the 6 pixels shift introduced in the VTG
Hsync programming.
Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
VTG interrupt names are badly displayed using "cat /proc/interrupts".
Simply use the VTG device name while registering the VTG interrupts
to fix it.
Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
The HDMI path introduce a delay of 6 pixels.
This delay should be take into account while programming
VTG for the HDMI. Without this delay, the HDMI active
window area is shift of 6 pixel on the right.
Set also timing for DVO output.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Video Time Generator drivers are used to synchronize the compositor
and tvout hardware IPs by providing line count, sample count,
synchronization signals (HSYNC, VSYNC) and top and bottom fields
indication.
VTG are used by pair for each data path (main or auxiliary)
one for master and one for slave.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>
