From: Sean Paul <seanp...@chromium.org>

Currently we derive the connector from digital port in check_link(). For
MST, this isn't sufficient since the digital port passed into the
function can have multiple connectors downstream. This patch adds
connector to the check_link() arguments so we have it when we need it.

Reviewed-by: Anshuman Gupta <anshuman.gu...@intel.com>
Reviewed-by: Ramalingam C <ramalinga...@intel.com>
Signed-off-by: Sean Paul <seanp...@chromium.org>
Link: 
https://patchwork.freedesktop.org/patch/msgid/20200218220242.107265-13-s...@poorly.run
 #v4
Link: 
https://patchwork.freedesktop.org/patch/msgid/20200305201236.152307-14-s...@poorly.run
 #v5
Link: 
https://patchwork.freedesktop.org/patch/msgid/20200429195502.39919-14-s...@poorly.run
 #v6
Link: 
https://patchwork.freedesktop.org/patch/msgid/20200623155907.22961-15-s...@poorly.run
 #v7

Changes in v4:
-Added to the set
Changes in v5:
-None
Changes in v6:
-None
Changes in v7:
-None
Changes in v8:
-None
---
 drivers/gpu/drm/i915/display/intel_display_types.h |  3 ++-
 drivers/gpu/drm/i915/display/intel_dp_hdcp.c       |  3 ++-
 drivers/gpu/drm/i915/display/intel_hdcp.c          |  2 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c          | 10 +++++-----
 4 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h 
b/drivers/gpu/drm/i915/display/intel_display_types.h
index 5e01f2f840c9..413b60337a0b 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -318,7 +318,8 @@ struct intel_hdcp_shim {
                                 bool enable);
 
        /* Ensures the link is still protected */
-       bool (*check_link)(struct intel_digital_port *dig_port);
+       bool (*check_link)(struct intel_digital_port *dig_port,
+                          struct intel_connector *connector);
 
        /* Detects panel's hdcp capability. This is optional for HDMI. */
        int (*hdcp_capable)(struct intel_digital_port *dig_port,
diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c 
b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
index c164ad11e617..b744253a5924 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c
@@ -224,7 +224,8 @@ int intel_dp_hdcp_toggle_signalling(struct 
intel_digital_port *dig_port,
 }
 
 static
-bool intel_dp_hdcp_check_link(struct intel_digital_port *dig_port)
+bool intel_dp_hdcp_check_link(struct intel_digital_port *dig_port,
+                             struct intel_connector *connector)
 {
        struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
        ssize_t ret;
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c 
b/drivers/gpu/drm/i915/display/intel_hdcp.c
index f25cfb7a9565..028cf3ac548f 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -952,7 +952,7 @@ static int intel_hdcp_check_link(struct intel_connector 
*connector)
                goto out;
        }
 
-       if (hdcp->shim->check_link(dig_port)) {
+       if (hdcp->shim->check_link(dig_port, connector)) {
                if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
                        intel_hdcp_update_value(connector,
                                DRM_MODE_CONTENT_PROTECTION_ENABLED, true);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c 
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index c0ea16dae3b3..0978b0d8f4c6 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1546,11 +1546,10 @@ int intel_hdmi_hdcp_toggle_signalling(struct 
intel_digital_port *dig_port,
 }
 
 static
-bool intel_hdmi_hdcp_check_link_once(struct intel_digital_port *dig_port)
+bool intel_hdmi_hdcp_check_link_once(struct intel_digital_port *dig_port,
+                                    struct intel_connector *connector)
 {
        struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
-       struct intel_connector *connector =
-               dig_port->hdmi.attached_connector;
        enum port port = dig_port->base.port;
        enum transcoder cpu_transcoder = connector->hdcp.cpu_transcoder;
        int ret;
@@ -1578,13 +1577,14 @@ bool intel_hdmi_hdcp_check_link_once(struct 
intel_digital_port *dig_port)
 }
 
 static
-bool intel_hdmi_hdcp_check_link(struct intel_digital_port *dig_port)
+bool intel_hdmi_hdcp_check_link(struct intel_digital_port *dig_port,
+                               struct intel_connector *connector)
 {
        struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
        int retry;
 
        for (retry = 0; retry < 3; retry++)
-               if (intel_hdmi_hdcp_check_link_once(dig_port))
+               if (intel_hdmi_hdcp_check_link_once(dig_port, connector))
                        return true;
 
        drm_err(&i915->drm, "Link check failed\n");
-- 
Sean Paul, Software Engineer, Google / Chromium OS

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