> -----Original Message----- > From: Sean Paul [mailto:seanpaul@xxxxxxxxxxxx] > Sent: Tuesday, July 10, 2018 2:21 AM > To: C, Ramalingam <ramalingam.c@xxxxxxxxx> > Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; > daniel@xxxxxxxx; Winkler, Tomas <tomas.winkler@xxxxxxxxx>; Usyskin, > Alexander <alexander.usyskin@xxxxxxxxx>; Shankar, Uma > <uma.shankar@xxxxxxxxx>; chris@xxxxxxxxxxxxxxxxxx; > jani.nikula@xxxxxxxxxxxxxxx; Sharma, Shashank <shashank.sharma@xxxxxxxxx>; > Sean Paul <seanpaul@xxxxxxxxxxxx> > Subject: Re: [PATCH v5 20/40] drm/i915: Check HDCP 1.4 and 2.2 link on CP_IRQ > > On Wed, Jun 27, 2018 at 02:10:09PM +0530, Ramalingam C wrote: > > On DP HDCP1.4 and 2.2, when CP_IRQ is received, start the link > > integrity check for the HDCP version that is enabled. > > > > v2: > > Rebased. Function name is changed. > > v3: > > No Changes. > > v4: > > No Changes. > > v5: > > No Changes. > > > > Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx> > > cc: Sean Paul <seanpaul@xxxxxxxxxxxx> > > --- > > drivers/gpu/drm/i915/intel_dp.c | 2 +- > > drivers/gpu/drm/i915/intel_drv.h | 2 +- > > drivers/gpu/drm/i915/intel_hdcp.c | 31 ++++++++++++++++++++++++++++++- > > 3 files changed, 32 insertions(+), 3 deletions(-) > > > > diff --git a/drivers/gpu/drm/i915/intel_dp.c > > b/drivers/gpu/drm/i915/intel_dp.c index 7467e7b3f2df..a6ba27ef20ae > > 100644 > > --- a/drivers/gpu/drm/i915/intel_dp.c > > +++ b/drivers/gpu/drm/i915/intel_dp.c > > @@ -4484,7 +4484,7 @@ intel_dp_short_pulse(struct intel_dp *intel_dp) > > if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) > > intel_dp_handle_test_request(intel_dp); > > if (sink_irq_vector & DP_CP_IRQ) > > - intel_hdcp_check_link(intel_dp->attached_connector); > > + intel_hdcp_handle_cp_irq(intel_dp- > >attached_connector); > > if (sink_irq_vector & DP_SINK_SPECIFIC_IRQ) > > DRM_DEBUG_DRIVER("Sink specific irq unhandled\n"); > > } > > diff --git a/drivers/gpu/drm/i915/intel_drv.h > > b/drivers/gpu/drm/i915/intel_drv.h > > index 7624388eecd5..875657fd7d3c 100644 > > --- a/drivers/gpu/drm/i915/intel_drv.h > > +++ b/drivers/gpu/drm/i915/intel_drv.h > > @@ -1965,8 +1965,8 @@ int intel_hdcp_init(struct intel_connector > *connector, > > bool hdcp2_supported); > > int intel_hdcp_enable(struct intel_connector *connector); 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); > > +void intel_hdcp_handle_cp_irq(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 790f4a9f4793..b035274785c8 100644 > > --- a/drivers/gpu/drm/i915/intel_hdcp.c > > +++ b/drivers/gpu/drm/i915/intel_hdcp.c > > @@ -32,6 +32,7 @@ int intel_hdcp_read_valid_bksv(struct intel_digital_port > *intel_dig_port, > > const struct intel_hdcp_shim *shim, u8 *bksv); > static > > struct intel_digital_port *conn_to_dig_port(struct intel_connector > > *connector); > > +static int intel_hdcp_check_link(struct intel_connector *connector); > > > > static bool panel_supports_hdcp(struct intel_connector *connector) { > > @@ -80,6 +81,26 @@ static inline bool intel_hdcp2_capable(struct > intel_connector *connector) > > panel_supports_hdcp2(connector)); > > } > > > > +static inline bool intel_hdcp_in_force(struct intel_connector > > +*connector) > > nit: I'd use _in_use instead of in_force Sure I will rename it. > > With that fixed, > > Reviewed-by: Sean Paul <seanpaul@xxxxxxxxxxxx> Thanks, Ram. > > > > +{ > > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > + enum port port = connector->encoder->port; > > + u32 reg; > > + > > + reg = I915_READ(PORT_HDCP_STATUS(port)); > > + return reg & (HDCP_STATUS_AUTH | HDCP_STATUS_ENC); } > > + > > +static inline bool intel_hdcp2_in_force(struct intel_connector > > +*connector) { > > + struct drm_i915_private *dev_priv = to_i915(connector->base.dev); > > + enum port port = connector->encoder->port; > > + u32 reg; > > + > > + reg = I915_READ(HDCP2_STATUS_DDI(port)); > > + return reg & (LINK_ENCRYPTION_STATUS | LINK_AUTH_STATUS); } > > + > > static int intel_hdcp_poll_ksv_fifo(struct intel_digital_port *intel_dig_port, > > const struct intel_hdcp_shim *shim) { @@ - > 939,7 +960,7 @@ > > void intel_hdcp_atomic_check(struct drm_connector *connector, } > > > > /* Implements Part 3 of the HDCP authorization procedure */ -int > > intel_hdcp_check_link(struct intel_connector *connector) > > +static int intel_hdcp_check_link(struct intel_connector *connector) > > { > > struct intel_hdcp *hdcp = &connector->hdcp; > > struct drm_i915_private *dev_priv = > > connector->base.dev->dev_private; @@ -2011,3 +2032,11 @@ static void > intel_hdcp2_check_work(struct work_struct *work) > > schedule_delayed_work(&hdcp->hdcp2_check_work, > > DRM_HDCP2_CHECK_PERIOD_MS); } > > + > > +void intel_hdcp_handle_cp_irq(struct intel_connector *connector) { > > + if (intel_hdcp_in_force(connector)) > > + intel_hdcp_check_link(connector); > > + else if (intel_hdcp2_in_force(connector)) > > + intel_hdcp2_check_link(connector); > > +} > > -- > > 2.7.4 > > > > -- > Sean Paul, Software Engineer, Google / Chromium OS _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
