drm/i915: add new Haswell DIP controls registers
Haswell has different DIP control registers and offsets which we need to
use for infoframes, which this patch adds.
Note that this does not adds full DIP frames support, but only the basic
functionality necessary for HDMI to work in early enablement.
v2: replace infoframe handling with a debug message, proper support will
be added via a patch from Paulo Zanoni later.
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Paulo Zanoni <przanoni@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index e240d99..4a9d553 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -277,6 +277,18 @@
I915_WRITE(reg, val);
}
+static void hsw_write_infoframe(struct drm_encoder *encoder,
+ struct dip_infoframe *frame)
+{
+ /* Not implemented yet, so avoid doing anything at all.
+ * This is the placeholder for Paulo Zanoni's infoframe writing patch
+ */
+ DRM_DEBUG_DRIVER("Attempting to write infoframe on Haswell, this is not implemented yet.\n");
+
+ return;
+
+}
+
static void intel_set_infoframe(struct drm_encoder *encoder,
struct dip_infoframe *frame)
{
@@ -660,6 +672,13 @@
intel_hdmi->write_infoframe = vlv_write_infoframe;
for_each_pipe(i)
I915_WRITE(VLV_TVIDEO_DIP_CTL(i), 0);
+ } else if (IS_HASWELL(dev)) {
+ /* FIXME: Haswell has a new set of DIP frame registers, but we are
+ * just doing the minimal required for HDMI to work at this stage.
+ */
+ intel_hdmi->write_infoframe = hsw_write_infoframe;
+ for_each_pipe(i)
+ I915_WRITE(HSW_TVIDEO_DIP_CTL(i), 0);
} else if (HAS_PCH_IBX(dev)) {
intel_hdmi->write_infoframe = ibx_write_infoframe;
for_each_pipe(i)