drm/i915: Add AVI infoframe support for LSPCON

In order to pass AVI infoframes to LSPCON devices, a source has to
write them in a vendor recommended method and location.

This patch series:
- adds generic LSPCON infoframe setup functions.
- registers these functions into existing AVI infoframe framework.
- triggers these functions from modeset sequence.

Next patches in the series will add vendor specific code.

V2: Added new parameter to align with new definition of
    drm_hdmi_avi_infoframe_quant_range
V3: Added r-b from Maarten (for V2)
    Added new parameter output_format in struct lspcon to accommodate
    Ville's review comments on last patch of the series
V4: Addressed Ville's review comment
    - Do not add output_format in LSPCON state, as its non-atomic. Add
      this into CRTC state (added in a later patch).
V5: Rebase
V6: Rebase
V7: Rebase
V8: Rebase
V9: Rebase
V10: Rebase
V11: Accommodated rebasing changes in intel_git_port fptrs (set_infoframes and infoframe_enabled)

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1539325394-20788-5-git-send-email-shashank.sharma@intel.com

1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index e2cc5edaeedd..d2232e32a059 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -2321,9 +2321,16 @@ void intel_infoframe_init(struct intel_digital_port *intel_dig_port)
 		intel_dig_port->set_infoframes = g4x_set_infoframes;
 		intel_dig_port->infoframe_enabled = g4x_infoframe_enabled;
 	} else if (HAS_DDI(dev_priv)) {
-		intel_dig_port->write_infoframe = hsw_write_infoframe;
-		intel_dig_port->set_infoframes = hsw_set_infoframes;
-		intel_dig_port->infoframe_enabled = hsw_infoframe_enabled;
+		if (intel_dig_port->lspcon.active) {
+			intel_dig_port->set_infoframes = lspcon_set_infoframes;
+			intel_dig_port->infoframe_enabled =
+						lspcon_infoframe_enabled;
+		} else {
+			intel_dig_port->set_infoframes = hsw_set_infoframes;
+			intel_dig_port->infoframe_enabled =
+						hsw_infoframe_enabled;
+			intel_dig_port->write_infoframe = hsw_write_infoframe;
+		}
 	} else if (HAS_PCH_IBX(dev_priv)) {
 		intel_dig_port->write_infoframe = ibx_write_infoframe;
 		intel_dig_port->set_infoframes = ibx_set_infoframes;