[PATCH v14 04/33] drm/i915: MEI interface implementation
C, Ramalingam
ramalingam.c at intel.com
Thu Feb 21 04:07:09 UTC 2019
> -----Original Message-----
> From: Daniel Vetter [mailto:daniel.vetter at ffwll.ch] On Behalf Of Daniel Vetter
> Sent: Thursday, February 21, 2019 1:10 AM
> To: C, Ramalingam <ramalingam.c at intel.com>
> Cc: intel-gfx at lists.freedesktop.org; dri-devel at lists.freedesktop.org;
> daniel.vetter at ffwll.ch; Winkler, Tomas <tomas.winkler at intel.com>; Shankar,
> Uma <uma.shankar at intel.com>
> Subject: Re: [PATCH v14 04/33] drm/i915: MEI interface implementation
>
> On Sat, Feb 16, 2019 at 11:06:51PM +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]
> > v7:
> > Component init and fini are moved out of connector ops [Daniel]
> > hdcp_disable is not called from unbind. [Daniel]
> > v8:
> > subcomponent name is dropped as it is already merged.
> >
> > Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
> > Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch> [v11]
>
> I think that r-b was for v7, not v8, and v11 of this patch doesn't even exist. Series
> itself is as v14. Anyways, merged, thanks for all your work!
Thanks Daniel. Series version at which R-b was received for the original patch was captured here.
But yes. Should have captured the patch version instead.
-Ram
> -Daniel
>
> > ---
> > 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_display.c | 4 +
> > drivers/gpu/drm/i915/intel_drv.h | 8 +
> > drivers/gpu/drm/i915/intel_hdcp.c | 398
> ++++++++++++++++++++++++++++++++-
> > 6 files changed, 419 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_drv.c
> > b/drivers/gpu/drm/i915/i915_drv.c index 6630212f2faf..c6354f6cdbdb
> > 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.c
> > +++ b/drivers/gpu/drm/i915/i915_drv.c
> > @@ -906,6 +906,7 @@ 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 5c8d0489a1cd..d375d1cf86f5
> > 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"
> > @@ -2052,6 +2053,12 @@ 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_display.c
> > b/drivers/gpu/drm/i915/intel_display.c
> > index 73a107b6eb9a..acb993ce7eaa 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -15453,6 +15453,8 @@ int intel_modeset_init(struct drm_device *dev)
> > intel_update_czclk(dev_priv);
> > intel_modeset_init_hw(dev);
> >
> > + intel_hdcp_component_init(dev_priv);
> > +
> > if (dev_priv->max_cdclk_freq == 0)
> > intel_update_max_cdclk(dev_priv);
> >
> > @@ -16314,6 +16316,8 @@ void intel_modeset_cleanup(struct drm_device
> *dev)
> > /* flush any delayed tasks or pending work */
> > flush_scheduled_work();
> >
> > + intel_hdcp_component_fini(dev_priv);
> > +
> > drm_mode_config_cleanup(dev);
> >
> > intel_overlay_cleanup(dev_priv);
> > diff --git a/drivers/gpu/drm/i915/intel_drv.h
> > b/drivers/gpu/drm/i915/intel_drv.h
> > index 11c696025085..f8e8482573c8 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;
> > @@ -395,6 +396,9 @@ 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 {
> > @@ -415,6 +419,7 @@ 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 {
> > @@ -2088,6 +2093,9 @@ 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_component_init(struct drm_i915_private *dev_priv);
> > +void intel_hdcp_component_fini(struct drm_i915_private *dev_priv);
> > +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..d06bef9d1ab2 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 +834,347 @@ 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);
> > +
> > + DRM_DEBUG("I915 HDCP comp unbind\n");
> > + 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 inline 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))
> > @@ -841,11 +1184,40 @@ static bool is_hdcp2_supported(struct
> drm_i915_private *dev_priv)
> > IS_KABYLAKE(dev_priv));
> > }
> >
> > +void intel_hdcp_component_init(struct drm_i915_private *dev_priv) {
> > + int ret;
> > +
> > + if (!is_hdcp2_supported(dev_priv))
> > + return;
> > +
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + WARN_ON(dev_priv->hdcp_comp_added);
> > +
> > + dev_priv->hdcp_comp_added = true;
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + 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);
> > + return;
> > + }
> > +}
> > +
> > static void intel_hdcp2_init(struct intel_connector *connector) {
> > struct intel_hdcp *hdcp = &connector->hdcp;
> > + int ret;
> > +
> > + ret = initialize_hdcp_port_data(connector);
> > + if (ret) {
> > + DRM_DEBUG_KMS("Mei hdcp data init failed\n");
> > + return;
> > + }
> >
> > - /* TODO: MEI interface needs to be initialized here */
> > hdcp->hdcp2_supported = true;
> > }
> >
> > @@ -917,6 +1289,30 @@ int intel_hdcp_disable(struct intel_connector
> *connector)
> > return ret;
> > }
> >
> > +void intel_hdcp_component_fini(struct drm_i915_private *dev_priv) {
> > + mutex_lock(&dev_priv->hdcp_comp_mutex);
> > + if (!dev_priv->hdcp_comp_added) {
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > + return;
> > + }
> > +
> > + dev_priv->hdcp_comp_added = false;
> > + mutex_unlock(&dev_priv->hdcp_comp_mutex);
> > +
> > + component_del(dev_priv->drm.dev, &i915_hdcp_component_ops); }
> > +
> > +void intel_hdcp_cleanup(struct intel_connector *connector) {
> > + if (!connector->hdcp.shim)
> > + return;
> > +
> > + mutex_lock(&connector->hdcp.mutex);
> > + kfree(connector->hdcp.port_data.streams);
> > + mutex_unlock(&connector->hdcp.mutex);
> > +}
> > +
> > void intel_hdcp_atomic_check(struct drm_connector *connector,
> > struct drm_connector_state *old_state,
> > struct drm_connector_state *new_state)
> > --
> > 2.7.4
> >
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
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