Previously the panel and output were only enabled on encoder->dpms(). If userspace called dpms on before doing a modeset, the driver would get into a state where the connector had a dpms state of ON, but the encoder and output were not enabled (because the encoder is not yet attached to the connector). Subsequent dpms ON calls are ignored b/c the connector's state already matches the desired state.
This patch enables/disables the panel and output on modeset as well, so we can catch the above case.
Signed-off-by: Sean Paul seanpaul@chromium.org --- drivers/gpu/drm/tegra/output.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c index 0c67d7e..937a0ea 100644 --- a/drivers/gpu/drm/tegra/output.c +++ b/drivers/gpu/drm/tegra/output.c @@ -157,10 +157,12 @@ static bool tegra_encoder_mode_fixup(struct drm_encoder *encoder,
static void tegra_encoder_prepare(struct drm_encoder *encoder) { + tegra_encoder_dpms(encoder, DRM_MODE_DPMS_OFF); }
static void tegra_encoder_commit(struct drm_encoder *encoder) { + tegra_encoder_dpms(encoder, DRM_MODE_DPMS_ON); }
static void tegra_encoder_mode_set(struct drm_encoder *encoder,