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From: Ville Syrjala <ville.syrjala@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: Jani Nikula <jani.nikula@intel.com>
Subject: [Intel-gfx] [PATCH 1/9] drm/i915/hdcp: Nuke intel_hdcp_transcoder_config()
Date: Wed,  4 Dec 2019 20:05:41 +0200	[thread overview]
Message-ID: <20191204180549.1267-2-ville.syrjala@linux.intel.com> (raw)
In-Reply-To: <20191204180549.1267-1-ville.syrjala@linux.intel.com>

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

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>
---
 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 ebcc7302706b..e692c0b28559 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -4026,6 +4026,7 @@ 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);
 }
 
@@ -4129,7 +4130,9 @@ 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 5c406a0fd045..0f496115c345 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2425,9 +2425,6 @@ 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 001ce27d7029..0fdbd39f6641 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 29a174af5314..a89a09b25260 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2490,9 +2490,6 @@ 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;
 }
 
-- 
2.23.0

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  reply	other threads:[~2019-12-04 18:06 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-04 18:05 [Intel-gfx] [PATCH 0/9] drm/i915: Cleanups around intel_attached_encoder() & co Ville Syrjala
2019-12-04 18:05 ` Ville Syrjala [this message]
2019-12-05  9:33   ` [Intel-gfx] [PATCH 1/9] drm/i915/hdcp: Nuke intel_hdcp_transcoder_config() Ramalingam C
2019-12-04 18:05 ` [Intel-gfx] [PATCH 2/9] drm/i915: Pass intel_connector to intel_attached_*() Ville Syrjala
2020-01-09  7:28   ` Kahola, Mika
2019-12-04 18:05 ` [Intel-gfx] [PATCH 3/9] drm/i915: Pass intel_encoder to enc_to_*() Ville Syrjala
2019-12-18 20:41   ` Juha-Pekka Heikkila
2019-12-04 18:05 ` [Intel-gfx] [PATCH 4/9] drm/i915: Use the passed in encoder Ville Syrjala
2019-12-05 10:24   ` Ramalingam C
2019-12-04 18:05 ` [Intel-gfx] [PATCH 5/9] drm/i915: Use intel_attached_encoder() Ville Syrjala
2019-12-05 10:59   ` Ramalingam C
2019-12-05 11:04     ` Ramalingam C
2019-12-09 15:52     ` Ville Syrjälä
2020-01-21 15:49   ` Juha-Pekka Heikkila
2019-12-04 18:05 ` [Intel-gfx] [PATCH 6/9] drm/i915: Relocate intel_attached_dp() Ville Syrjala
2020-01-13 13:53   ` Kahola, Mika
2019-12-04 18:05 ` [Intel-gfx] [PATCH 7/9] drm/i915: Use intel_attached_dp() instead of hand rolling it Ville Syrjala
2020-01-21 14:46   ` Juha-Pekka Heikkila
2019-12-04 18:05 ` [Intel-gfx] [PATCH 8/9] drm/i915: Rename conn_to_dig_port() to intel_attached_dig_port() Ville Syrjala
2020-01-21 14:46   ` Juha-Pekka Heikkila
2019-12-04 18:05 ` [Intel-gfx] [PATCH 9/9] drm/i915/hdcp: Clean up local variables Ville Syrjala
2019-12-05 10:22   ` Ramalingam C
2019-12-04 23:48 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915: Cleanups around intel_attached_encoder() & co Patchwork
2019-12-05  0:15 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
2019-12-05 11:58 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915: Cleanups around intel_attached_encoder() & co. (rev2) Patchwork
2019-12-05 12:19 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2019-12-05 15:06 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork

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