drm/msm/hdmi: add hdmi hdcp support (V3)

Add HDMI HDCP support including HDCP PartI/II/III authentication.
V1: Initial Change
V2: Address Bjorn&Rob's comments
    Refactor the authentication process to use single work instead
    of multiple work for different authentication stages.
V3: Update to align with qcom SCM api.

Signed-off-by: Jilai Wang <jilaiw@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index a7a1d8267cf0..1dd093e3451c 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -102,6 +102,9 @@ static void hdmi_bridge_pre_enable(struct drm_bridge *bridge)
 
         phy->funcs->powerup(phy, hdmi->pixclock);
         hdmi_set_mode(hdmi, true);
+
+        if (hdmi->hdcp_ctrl)
+                hdmi_hdcp_on(hdmi->hdcp_ctrl);
 }
 
 static void hdmi_bridge_enable(struct drm_bridge *bridge)
@@ -118,6 +121,9 @@ static void hdmi_bridge_post_disable(struct drm_bridge *bridge)
         struct hdmi *hdmi = hdmi_bridge->hdmi;
         struct hdmi_phy *phy = hdmi->phy;
 
+        if (hdmi->hdcp_ctrl)
+                hdmi_hdcp_off(hdmi->hdcp_ctrl);
+
         DBG("power down");
         hdmi_set_mode(hdmi, false);
         phy->funcs->powerdown(phy);
@@ -142,8 +148,6 @@ static void hdmi_bridge_mode_set(struct drm_bridge *bridge,
 
         hdmi->pixclock = mode->clock * 1000;
 
-        hdmi->hdmi_mode = drm_match_cea_mode(mode) > 1;
-
         hstart = mode->htotal - mode->hsync_start;
         hend   = mode->htotal - mode->hsync_start + mode->hdisplay;