On Thu, Feb 07, 2019 at 08:40:08PM +0100, Daniel Vetter wrote:
> On Thu, Feb 07, 2019 at 02:33:57AM +0530, Ramalingam C wrote:
> > Defining the mei-i915 interface functions and initialization of
> > the interface.
> >
> > v2:
> > Adjust to the new interface changes. [Tomas]
> > Added further debug logs for the failures at MEI i/f.
> > port in hdcp_port data is equipped to handle -ve values.
> > v3:
> > mei comp is matched for global i915 comp master. [Daniel]
> > In hdcp_shim hdcp_protocol() is replaced with const variable. [Daniel]
> > mei wrappers are adjusted as per the i/f change [Daniel]
> > v4:
> > port initialization is done only at hdcp2_init only [Danvet]
> > v5:
> > I915 registers a subcomponent to be matched with mei_hdcp [Daniel]
> > v6:
> > HDCP_disable for all connectors incase of comp_unbind.
> > Tear down HDCP comp interface at i915_unload [Daniel]
> >
> > Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/i915_drv.c | 1 +
> > drivers/gpu/drm/i915/i915_drv.h | 7 +
> > drivers/gpu/drm/i915/intel_connector.c | 2 +
> > drivers/gpu/drm/i915/intel_drv.h | 6 +
> > drivers/gpu/drm/i915/intel_hdcp.c | 423 ++++++++++++++++++++++++++++++++-
> > include/drm/i915_component.h | 3 +
> > 6 files changed, 441 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> > index 7de90701f6f1..9c4218b5d153 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.c
> > +++ b/drivers/gpu/drm/i915/i915_drv.c
> > @@ -904,6 +904,7 @@ static int i915_driver_init_early(struct drm_i915_private *dev_priv)
> > mutex_init(&dev_priv->av_mutex);
> > mutex_init(&dev_priv->wm.wm_mutex);
> > mutex_init(&dev_priv->pps_mutex);
> > + mutex_init(&dev_priv->hdcp_comp_mutex);
> >
> > i915_memcpy_init_early(dev_priv);
> > intel_runtime_pm_init_early(dev_priv);
> > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> > index a2293152cb6a..e3d030b73b5b 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.h
> > +++ b/drivers/gpu/drm/i915/i915_drv.h
> > @@ -55,6 +55,7 @@
> > #include <drm/drm_util.h>
> > #include <drm/drm_dsc.h>
> > #include <drm/drm_connector.h>
> > +#include <drm/i915_mei_hdcp_interface.h>
> >
> > #include "i915_fixed.h"
> > #include "i915_params.h"
> > @@ -2043,6 +2044,12 @@ struct drm_i915_private {
> >
> > struct i915_pmu pmu;
> >
> > + struct i915_hdcp_comp_master *hdcp_master;
> > + bool hdcp_comp_added;
> > +
> > + /* Mutex to protect the above hdcp component related values. */
> > + struct mutex hdcp_comp_mutex;
> > +
> > /*
> > * NOTE: This is the dri1/ums dungeon, don't add stuff here. Your patch
> > * will be rejected. Instead look for a better place.
> > diff --git a/drivers/gpu/drm/i915/intel_connector.c b/drivers/gpu/drm/i915/intel_connector.c
> > index ee16758747c5..66ed3ee5998a 100644
> > --- a/drivers/gpu/drm/i915/intel_connector.c
> > +++ b/drivers/gpu/drm/i915/intel_connector.c
> > @@ -88,6 +88,8 @@ void intel_connector_destroy(struct drm_connector *connector)
> >
> > kfree(intel_connector->detect_edid);
> >
> > + intel_hdcp_cleanup(intel_connector);
> > +
> > if (!IS_ERR_OR_NULL(intel_connector->edid))
> > kfree(intel_connector->edid);
> >
> > diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> > index 030d962697dd..b5c54c688256 100644
> > --- a/drivers/gpu/drm/i915/intel_drv.h
> > +++ b/drivers/gpu/drm/i915/intel_drv.h
> > @@ -41,6 +41,7 @@
> > #include <drm/drm_rect.h>
> > #include <drm/drm_vblank.h>
> > #include <drm/drm_atomic.h>
> > +#include <drm/i915_mei_hdcp_interface.h>
> > #include <media/cec-notifier.h>
> >
> > struct drm_printer;
> > @@ -385,6 +386,9 @@ struct intel_hdcp_shim {
> > /* Detects panel's hdcp capability. This is optional for HDMI. */
> > int (*hdcp_capable)(struct intel_digital_port *intel_dig_port,
> > bool *hdcp_capable);
> > +
> > + /* HDCP adaptation(DP/HDMI) required on the port */
> > + enum hdcp_wired_protocol protocol;
> > };
> >
> > struct intel_hdcp {
> > @@ -405,6 +409,7 @@ struct intel_hdcp {
> > * content can flow only through a link protected by HDCP2.2.
> > */
> > u8 content_type;
> > + struct hdcp_port_data port_data;
> > };
> >
> > struct intel_connector {
> > @@ -2070,6 +2075,7 @@ int intel_hdcp_disable(struct intel_connector *connector);
> > int intel_hdcp_check_link(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);
> > +void intel_hdcp_cleanup(struct intel_connector *connector);
> >
> > /* intel_psr.c */
> > #define CAN_PSR(dev_priv) (HAS_PSR(dev_priv) && dev_priv->psr.sink_support)
> > diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
> > index 7b1097d79fb8..79f8979b9150 100644
> > --- a/drivers/gpu/drm/i915/intel_hdcp.c
> > +++ b/drivers/gpu/drm/i915/intel_hdcp.c
> > @@ -7,8 +7,10 @@
> > */
> >
> > #include <drm/drm_hdcp.h>
> > +#include <drm/i915_component.h>
> > #include <linux/i2c.h>
> > #include <linux/random.h>
> > +#include <linux/component.h>
> >
> > #include "intel_drv.h"
> > #include "i915_reg.h"
> > @@ -832,6 +834,360 @@ bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port)
> > return INTEL_GEN(dev_priv) >= 9 && port < PORT_E;
> > }
> >
> > +static __attribute__((unused)) int
> > +hdcp2_prepare_ake_init(struct intel_connector *connector,
> > + struct hdcp2_ake_init *ake_data)
> > +{
> > + struct hdcp_port_data *data = &connector->hdcp.port_data;
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->initiate_hdcp2_session(comp->mei_dev, data, ake_data);
> > + if (ret)
> > + DRM_DEBUG_KMS("Prepare_ake_init failed. %d\n", ret);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused)) int
> > +hdcp2_verify_rx_cert_prepare_km(struct intel_connector *connector,
> > + struct hdcp2_ake_send_cert *rx_cert,
> > + bool *paired,
> > + struct hdcp2_ake_no_stored_km *ek_pub_km,
> > + size_t *msg_sz)
> > +{
> > + struct hdcp_port_data *data = &connector->hdcp.port_data;
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->verify_receiver_cert_prepare_km(comp->mei_dev, data,
> > + rx_cert, paired,
> > + ek_pub_km, msg_sz);
> > + if (ret < 0)
> > + DRM_DEBUG_KMS("Verify rx_cert failed. %d\n", ret);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused)) int
> > +hdcp2_verify_hprime(struct intel_connector *connector,
> > + struct hdcp2_ake_send_hprime *rx_hprime)
> > +{
> > + struct hdcp_port_data *data = &connector->hdcp.port_data;
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->verify_hprime(comp->mei_dev, data, rx_hprime);
> > + if (ret < 0)
> > + DRM_DEBUG_KMS("Verify hprime failed. %d\n", ret);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused)) int
> > +hdcp2_store_pairing_info(struct intel_connector *connector,
> > + struct hdcp2_ake_send_pairing_info *pairing_info)
> > +{
> > + struct hdcp_port_data *data = &connector->hdcp.port_data;
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->store_pairing_info(comp->mei_dev, data, pairing_info);
> > + if (ret < 0)
> > + DRM_DEBUG_KMS("Store pairing info failed. %d\n", ret);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused)) int
> > +hdcp2_prepare_lc_init(struct intel_connector *connector,
> > + struct hdcp2_lc_init *lc_init)
> > +{
> > + struct hdcp_port_data *data = &connector->hdcp.port_data;
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->initiate_locality_check(comp->mei_dev, data, lc_init);
> > + if (ret < 0)
> > + DRM_DEBUG_KMS("Prepare lc_init failed. %d\n", ret);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused)) int
> > +hdcp2_verify_lprime(struct intel_connector *connector,
> > + struct hdcp2_lc_send_lprime *rx_lprime)
> > +{
> > + struct hdcp_port_data *data = &connector->hdcp.port_data;
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->verify_lprime(comp->mei_dev, data, rx_lprime);
> > + if (ret < 0)
> > + DRM_DEBUG_KMS("Verify L_Prime failed. %d\n", ret);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused))
> > +int hdcp2_prepare_skey(struct intel_connector *connector,
> > + struct hdcp2_ske_send_eks *ske_data)
> > +{
> > + struct hdcp_port_data *data = &connector->hdcp.port_data;
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->get_session_key(comp->mei_dev, data, ske_data);
> > + if (ret < 0)
> > + DRM_DEBUG_KMS("Get session key failed. %d\n", ret);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused)) int
> > +hdcp2_verify_rep_topology_prepare_ack(struct intel_connector *connector,
> > + struct hdcp2_rep_send_receiverid_list
> > + *rep_topology,
> > + struct hdcp2_rep_send_ack *rep_send_ack)
> > +{
> > + struct hdcp_port_data *data = &connector->hdcp.port_data;
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->repeater_check_flow_prepare_ack(comp->mei_dev, data,
> > + rep_topology,
> > + rep_send_ack);
> > + if (ret < 0)
> > + DRM_DEBUG_KMS("Verify rep topology failed. %d\n", ret);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused)) int
> > +hdcp2_verify_mprime(struct intel_connector *connector,
> > + struct hdcp2_rep_stream_ready *stream_ready)
> > +{
> > + struct hdcp_port_data *data = &connector->hdcp.port_data;
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->verify_mprime(comp->mei_dev, data, stream_ready);
> > + if (ret < 0)
> > + DRM_DEBUG_KMS("Verify mprime failed. %d\n", ret);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused))
> > +int hdcp2_authenticate_port(struct intel_connector *connector)
> > +{
> > + struct hdcp_port_data *data = &connector->hdcp.port_data;
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->enable_hdcp_authentication(comp->mei_dev, data);
> > + if (ret < 0)
> > + DRM_DEBUG_KMS("Enable hdcp auth failed. %d\n", ret);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused))
> > +int hdcp2_close_mei_session(struct intel_connector *connector)
> > +{
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > + struct i915_hdcp_comp_master *comp;
> > + int ret;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + comp = dev_priv->hdcp_master;
> > +
> > + if (!comp || !comp->ops) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return -EINVAL;
> > + }
> > +
> > + ret = comp->ops->close_hdcp_session(comp->mei_dev,
> > + &connector->hdcp.port_data);
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return ret;
> > +}
> > +
> > +static __attribute__((unused))
> > +int hdcp2_deauthenticate_port(struct intel_connector *connector)
> > +{
> > + return hdcp2_close_mei_session(connector);
> > +}
> > +
> > +static int i915_hdcp_component_bind(struct device *i915_kdev,
> > + struct device *mei_kdev, void *data)
> > +{
> > + struct drm_i915_private *dev_priv = kdev_to_i915(i915_kdev);
> > +
> > + DRM_DEBUG("I915 HDCP comp bind\n");
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + dev_priv->hdcp_master = (struct i915_hdcp_comp_master *)data;
> > + dev_priv->hdcp_master->mei_dev = mei_kdev;
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + return 0;
> > +}
> > +
> > +static void i915_hdcp_component_unbind(struct device *i915_kdev,
> > + struct device *mei_kdev, void *data)
> > +{
> > + struct drm_i915_private *dev_priv = kdev_to_i915(i915_kdev);
> > + struct drm_device *dev = &dev_priv->drm;
> > + struct intel_connector *intel_connector;
> > + struct drm_connector *connector;
> > + struct drm_connector_list_iter conn_iter;
> > +
> > + DRM_DEBUG("I915 HDCP comp unbind\n");
> > +
> > + /* Once the component is unbind, Disable HDCP2.2 on all connectors */
> > + drm_connector_list_iter_begin(dev, &conn_iter);
> > + drm_for_each_connector_iter(connector, &conn_iter) {
> > + intel_connector = to_intel_connector(connector);
> > + intel_hdcp_disable(intel_connector);
> > + }
> > + drm_connector_list_iter_end(&conn_iter);
>
> I played this through, and I think we have a bug here.
>
> 1. Userspace asks for hdcp, sets connector_state->content_protection to
> DESIRED
> 2. hdcp is enabled, userspace visible value is now ENABLED
> 2. mei unloads
> 3. we disable content protection here
> 4. hdcp->value is set to UNDESIRED
> 5. intel_hdcp_prop_work does _not_ update
> connector_state->content_protection (this is correct, because otherwise
> dpms off/on would break and we would not try to restore)
> 6. Userspace still sees ENABLED, which is wrong
>
> I think the better solution is to not call intel_hdcp_disable here at all,
> but instead wait for the link status check work to notice that ME is gone,
> which will the correctly change status from ENABLED to DESIRED.
>
> So just the below code is needed I think
>
> Otherwise looks good to me, with the ebove loop removed:
>
> Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
>
>
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + dev_priv->hdcp_master = NULL;
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +}
> > +
> > +static const struct component_ops i915_hdcp_component_ops = {
> > + .bind = i915_hdcp_component_bind,
> > + .unbind = i915_hdcp_component_unbind,
> > +};
> > +
> > +static int initialize_hdcp_port_data(struct intel_connector *connector)
> > +{
> > + struct intel_hdcp *hdcp = &connector->hdcp;
> > + struct hdcp_port_data *data = &hdcp->port_data;
> > +
> > + data->port = connector->encoder->port;
> > + data->port_type = (u8)HDCP_PORT_TYPE_INTEGRATED;
> > + data->protocol = (u8)hdcp->shim->protocol;
> > +
> > + data->k = 1;
> > + if (!data->streams)
> > + data->streams = kcalloc(data->k,
> > + sizeof(struct hdcp2_streamid_type),
> > + GFP_KERNEL);
> > + if (!data->streams) {
> > + DRM_ERROR("Out of Memory\n");
> > + return -ENOMEM;
> > + }
> > +
> > + data->streams[0].stream_id = 0;
> > + data->streams[0].stream_type = hdcp->content_type;
> > +
> > + return 0;
> > +}
> > +
> > static bool is_hdcp2_supported(struct drm_i915_private *dev_priv)
> > {
> > if (!IS_ENABLED(CONFIG_INTEL_MEI_HDCP))
> > @@ -843,9 +1199,42 @@ static bool is_hdcp2_supported(struct drm_i915_private *dev_priv)
> >
> > static void intel_hdcp2_init(struct intel_connector *connector)
> > {
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > struct intel_hdcp *hdcp = &connector->hdcp;
> > + bool add_component = false;
> > + int ret;
> > +
> > + ret = initialize_hdcp_port_data(connector);
> > + if (ret) {
> > + DRM_DEBUG_KMS("Mei hdcp data init failed\n");
> > + return;
> > + }
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + /*
> > + * Component for mei is common across the connector.
> > + * Adding the component once is sufficient.
> > + */
> > + if (!dev_priv->hdcp_comp_added) {
> > + dev_priv->hdcp_comp_added = true;
> > + add_component = true;
> > + }
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + if (add_component) {
This one (and the similar code in the destroy path) is a bit awkward for
two reasons:
- Because of dp mst hotplug/unplug you need a lock to make sure we
register only once, usually setup & teardown code doesn't need any
locking at all because it's all single-threaded.
- ->hdcp_comp_added boils down to "have we loaded i915".
I think it would be nice to have a separate intel_hdcp_mei_comp_init/fini,
which is called only once (from mode_config setup/teardown functions
perhaps) in the driver load/unload code, which would avoid both issues.
Because the code is already protected with the mutex against the mei hdcp
driver appearing/disappearing any time it wants to this will not cause an
additional problem. So would be nice to simplify.
Cheers, Daniel
> > + ret = component_add_typed(dev_priv->drm.dev,
> > + &i915_hdcp_component_ops,
> > + I915_COMPONENT_HDCP);
> > + if (ret < 0) {
> > + DRM_DEBUG_KMS("Failed at component add(%d)\n", ret);
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + dev_priv->hdcp_comp_added = false;
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + kfree(hdcp->port_data.streams);
> > + return;
> > + }
> > + }
> >
> > - /* TODO: MEI interface needs to be initialized here */
> > hdcp->hdcp2_supported = true;
> > }
> >
> > @@ -917,6 +1306,38 @@ int intel_hdcp_disable(struct intel_connector *connector)
> > return ret;
> > }
> >
> > +void intel_hdcp_cleanup(struct intel_connector *connector)
> > +{
> > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> > +
> > + if (!connector->hdcp.shim)
> > + return;
> > +
> > + mutex_lock(&connector->hdcp.mutex);
> > + if (!connector->hdcp.hdcp2_supported) {
> > + mutex_unlock(&connector->hdcp.mutex);
> > + return;
> > + }
> > +
> > + kfree(connector->hdcp.port_data.streams);
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + /*
> > + * Component for mei is common across the connector.
> > + * Removing the component once is sufficient.
> > + */
> > + if (!dev_priv->hdcp_comp_added) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + mutex_unlock(&connector->hdcp.mutex);
> > + return;
> > + }
> > +
> > + dev_priv->hdcp_comp_added = false;
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + mutex_unlock(&connector->hdcp.mutex);
> > +
> > + component_del(dev_priv->drm.dev, &i915_hdcp_component_ops);
> > +}
> > +
> > void intel_hdcp_atomic_check(struct drm_connector *connector,
> > struct drm_connector_state *old_state,
> > struct drm_connector_state *new_state)
> > diff --git a/include/drm/i915_component.h b/include/drm/i915_component.h
> > index 72fbb037f9b3..f3851ba3e4c3 100644
> > --- a/include/drm/i915_component.h
> > +++ b/include/drm/i915_component.h
> > @@ -24,10 +24,13 @@
> > #ifndef _I915_COMPONENT_H_
> > #define _I915_COMPONENT_H_
> >
> > +#include <linux/device.h>
> > +
> > #include "drm_audio_component.h"
> >
> > enum i915_component_type {
> > I915_COMPONENT_AUDIO = 1,
> > + I915_COMPONENT_HDCP,
> > };
> >
> > /* MAX_PORT is the number of port
> > --
> > 2.7.4
> >
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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