From 3ce8209735e120db6f0ef739480e3dc7e2cb6763 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Wed, 4 Dec 2019 20:05:41 +0200
Subject: drm/i915/hdcp: Nuke intel_hdcp_transcoder_config()
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Git-commit: 3ce8209735e120db6f0ef739480e3dc7e2cb6763
Patch-mainline: v5.5-rc2
References: bsc#1152489
intel_hdcp_transcoder_config() is clobbering some globally visible
state in .compute_config(). That is a big no no as .compute_config()
is supposed to have no visible side effects when either the commit
fails or it's just a TEST_ONLY commit.
Inline this stuff into intel_hdcp_enable() so that the state only
gets modified when we actually commit the state to the hardware.
Cc: Ramalingam C <ramalingam.c@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Fixes: 39e2df090c3c ("drm/i915/hdcp: update current transcoder into intel_hdcp")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204180549.1267-2-ville.syrjala@linux.intel.com
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
(cherry picked from commit 67e1d5ed85a83e232a9e0b995f5778a86722b96e)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 5 ++++-
drivers/gpu/drm/i915/display/intel_dp.c | 3 ---
drivers/gpu/drm/i915/display/intel_hdcp.c | 26 +++++++----------------
drivers/gpu/drm/i915/display/intel_hdcp.h | 5 ++---
drivers/gpu/drm/i915/display/intel_hdmi.c | 3 ---
5 files changed, 14 insertions(+), 28 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index c7c2b349858d..2a27fb5d7dc6 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3986,6 +3986,7 @@ static void intel_enable_ddi(struct intel_encoder *encoder,
if (conn_state->content_protection ==
DRM_MODE_CONTENT_PROTECTION_DESIRED)
intel_hdcp_enable(to_intel_connector(conn_state->connector),
+ crtc_state->cpu_transcoder,
(u8)conn_state->hdcp_content_type);
}
@@ -4089,7 +4090,9 @@ static void intel_ddi_update_pipe(struct intel_encoder *encoder,
if (conn_state->content_protection ==
DRM_MODE_CONTENT_PROTECTION_DESIRED ||
content_protection_type_changed)
- intel_hdcp_enable(connector, (u8)conn_state->hdcp_content_type);
+ intel_hdcp_enable(connector,
+ crtc_state->cpu_transcoder,
+ (u8)conn_state->hdcp_content_type);
}
static void
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 050655a1a3d8..b05b2191b919 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2414,9 +2414,6 @@ intel_dp_compute_config(struct intel_encoder *encoder,
intel_psr_compute_config(intel_dp, pipe_config);
- intel_hdcp_transcoder_config(intel_connector,
- pipe_config->cpu_transcoder);
-
return 0;
}
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index f1f41ca8402b..a448815d8fc2 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -1821,23 +1821,6 @@ enum mei_fw_tc intel_get_mei_fw_tc(enum transcoder cpu_transcoder)
}
}
-void intel_hdcp_transcoder_config(struct intel_connector *connector,
- enum transcoder cpu_transcoder)
-{
- struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
- struct intel_hdcp *hdcp = &connector->hdcp;
-
- if (!hdcp->shim)
- return;
-
- if (INTEL_GEN(dev_priv) >= 12) {
- mutex_lock(&hdcp->mutex);
- hdcp->cpu_transcoder = cpu_transcoder;
- hdcp->port_data.fw_tc = intel_get_mei_fw_tc(cpu_transcoder);
- mutex_unlock(&hdcp->mutex);
- }
-}
-
static inline int initialize_hdcp_port_data(struct intel_connector *connector,
const struct intel_hdcp_shim *shim)
{
@@ -1959,8 +1942,10 @@ int intel_hdcp_init(struct intel_connector *connector,
return 0;
}
-int intel_hdcp_enable(struct intel_connector *connector, u8 content_type)
+int intel_hdcp_enable(struct intel_connector *connector,
+ enum transcoder cpu_transcoder, u8 content_type)
{
+ struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
struct intel_hdcp *hdcp = &connector->hdcp;
unsigned long check_link_interval = DRM_HDCP_CHECK_PERIOD_MS;
int ret = -EINVAL;
@@ -1972,6 +1957,11 @@ int intel_hdcp_enable(struct intel_connector *connector, u8 content_type)
WARN_ON(hdcp->value == DRM_MODE_CONTENT_PROTECTION_ENABLED);
hdcp->content_type = content_type;
+ if (INTEL_GEN(dev_priv) >= 12) {
+ hdcp->cpu_transcoder = cpu_transcoder;
+ hdcp->port_data.fw_tc = intel_get_mei_fw_tc(cpu_transcoder);
+ }
+
/*
* Considering that HDCP2.2 is more secure than HDCP1.4, If the setup
* is capable of HDCP2.2, it is preferred to use HDCP2.2.
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.h b/drivers/gpu/drm/i915/display/intel_hdcp.h
index 41c1053d9e38..f3c3272e712a 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.h
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.h
@@ -21,11 +21,10 @@ enum transcoder;
void intel_hdcp_atomic_check(struct drm_connector *connector,
struct drm_connector_state *old_state,
struct drm_connector_state *new_state);
-void intel_hdcp_transcoder_config(struct intel_connector *connector,
- enum transcoder cpu_transcoder);
int intel_hdcp_init(struct intel_connector *connector,
const struct intel_hdcp_shim *hdcp_shim);
-int intel_hdcp_enable(struct intel_connector *connector, u8 content_type);
+int intel_hdcp_enable(struct intel_connector *connector,
+ enum transcoder cpu_transcoder, u8 content_type);
int intel_hdcp_disable(struct intel_connector *connector);
bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port);
bool intel_hdcp_capable(struct intel_connector *connector);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index f6f5312205c4..f56fffc474fa 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2489,9 +2489,6 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
return -EINVAL;
}
- intel_hdcp_transcoder_config(intel_hdmi->attached_connector,
- pipe_config->cpu_transcoder);
-
return 0;
}
--
2.28.0