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drm/i915/hdcp: Nuke intel_hdcp_transcoder_config() 

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: 39e2df090c ("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 67e1d5ed85)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
This commit is contained in:
Ville Syrjälä 2019-12-04 20:05:41 +02:00 committed by Joonas Lahtinen
parent 0eb8e74f72
commit 3ce8209735
5 changed files with 14 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/i915/display/intel_ddi.c
View File

@ -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

3
drivers/gpu/drm/i915/display/intel_dp.c
View File

@ -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;
}

26
drivers/gpu/drm/i915/display/intel_hdcp.c
View File

@ -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.

5
drivers/gpu/drm/i915/display/intel_hdcp.h
View File

@ -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);

3
drivers/gpu/drm/i915/display/intel_hdmi.c
View File

@ -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;
}