On 10/23/2014 09:50 PM, Jesse Barnes wrote:
This is useful for checking things later.
Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_drv.h | 4 +++
drivers/gpu/drm/i915/intel_hdmi.c | 61 +++++++++++++++++++++++++++++++++++++++
2 files changed, 65 insertions(+)
[...]
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 8b5f3aa..75efe4c 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
[...]
@@ -320,6 +362,17 @@ static void hsw_write_infoframe(struct drm_encoder *encoder,
POSTING_READ(ctl_reg);
}
+static bool hsw_infoframe_enabled(struct drm_encoder *encoder)
+{
+ struct drm_device *dev = encoder->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
+ u32 ctl_reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config.cpu_transcoder);
+ u32 val = I915_READ(ctl_reg);
+
+ return val & VIDEO_DIP_ENABLE;
Haswell docs list bit 31 of VIDEO_DIP_CTL as reserved. Looking at
hsw_set_infoframe(), it seems that you would have to test for the enable
bits for the different infoframe types instead.
Ander
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