>-----Original Message----- >From: dri-devel [mailto:[email protected]] On Behalf Of >Ramalingam C >Sent: Tuesday, April 3, 2018 7:28 PM >To: [email protected]; [email protected]; >[email protected]; [email protected]; [email protected]; >[email protected]; Winkler, Tomas <[email protected]>; >Usyskin, Alexander <[email protected]> >Cc: Vivi, Rodrigo <[email protected]> >Subject: [PATCH v3 26/40] drm/i915: Implement HDCP2.2 En/Dis-able
May be calling enable/disable sequence separately will be better :) > >Implements a sequence of enabling and disabling the HDCP2.2 (auth and >encryption). > >v2: > Rebased. >v3: > No Changes. > >Signed-off-by: Ramalingam C <[email protected]> >--- > drivers/gpu/drm/i915/intel_hdcp.c | 75 >+++++++++++++++++++++++++++++++++++++++ > 1 file changed, 75 insertions(+) > >diff --git a/drivers/gpu/drm/i915/intel_hdcp.c >b/drivers/gpu/drm/i915/intel_hdcp.c >index 91cac643f083..005627746ca5 100644 >--- a/drivers/gpu/drm/i915/intel_hdcp.c >+++ b/drivers/gpu/drm/i915/intel_hdcp.c >@@ -21,6 +21,9 @@ > #define HDCP2_LC_RETRY_CNT 3 > #define TIME_FOR_ENCRYPT_STATUS_CHANGE 32 > >+static int _intel_hdcp2_enable(struct intel_connector *connector); >+static int _intel_hdcp2_disable(struct intel_connector *connector); >+ > static int intel_hdcp_poll_ksv_fifo(struct intel_digital_port *intel_dig_port, > const struct intel_hdcp_shim *shim) { @@ - >1384,3 +1387,75 @@ static int hdcp2_disable_encryption(struct intel_connector >*connector) > > return ret; > } >+ >+static int hdcp2_authenticate_and_encrypt(struct intel_connector >+*connector) { >+ int ret, i, tries = 3; >+ >+ for (i = 0; i < tries; i++) { >+ ret = hdcp2_authenticate_sink(connector); >+ if (!ret) >+ break; >+ >+ /* Clearing the mei hdcp session */ >+ hdcp2_deauthenticate_port(&connector->hdcp); >+ DRM_DEBUG_KMS("HDCP2.2 Auth %d of %d Failed.(%d)\n", >+ i + 1, tries, ret); >+ } >+ >+ if (i != tries) { >+ >+ /* >+ * Ensuring the required 200mSec min time interval between >+ * Session Key Exchange and encryption. >+ */ >+ msleep(HDCP_2_2_DELAY_BEFORE_ENCRYPTION_EN); >+ ret = hdcp2_enable_encryption(connector); >+ if (ret < 0) { >+ DRM_DEBUG_KMS("Encryption Enable Failed.(%d)\n", >ret); >+ hdcp2_deauthenticate_port(&connector->hdcp); >+ } >+ } >+ >+ return ret; >+} >+ >+static int _intel_hdcp2_disable(struct intel_connector *connector) { >+ int ret; >+ >+ DRM_DEBUG_KMS("[%s:%d] HDCP2.2 is being Disabled\n", >+ connector->base.name, connector->base.base.id); >+ >+ ret = hdcp2_disable_encryption(connector); Check for return and print a message. >+ >+ hdcp2_deauthenticate_port(&connector->hdcp); >+ >+ return ret; >+} >+ >+static int _intel_hdcp2_enable(struct intel_connector *connector) { >+ struct intel_hdcp *hdcp = &connector->hdcp; >+ int ret; >+ >+ DRM_DEBUG_KMS("[%s:%d] HDCP2.2 is being enabled. Type: %d\n", >+ connector->base.name, connector->base.base.id, >+ hdcp->content_type); >+ >+ ret = hdcp2_authenticate_and_encrypt(connector); >+ if (ret) { >+ DRM_ERROR("HDCP2 Type%d Enabling Failed. (%d)\n", >+ hdcp->content_type, ret); >+ return ret; >+ } >+ >+ DRM_DEBUG_KMS("[%s:%d] HDCP2.2 is enabled. Type %d\n", >+ connector->base.name, connector->base.base.id, >+ hdcp->content_type); >+ >+ hdcp->hdcp_value = DRM_MODE_CONTENT_PROTECTION_ENABLED; >+ schedule_work(&hdcp->hdcp_prop_work); >+ >+ return 0; >+} >-- >2.7.4 > >_______________________________________________ >dri-devel mailing list >[email protected] ;>https://lists.freedesktop.org/mailman/listinfo/dri-devel _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
