From: Sean Paul <seanp...@chromium.org> On HDCP disable, clear the repeater bit. This ensures if we connect a non-repeater sink after a repeater, the bit is in the state we expect.
Fixes: ee5e5e7a5e0f (drm/i915: Add HDCP framework + base implementation) Cc: Chris Wilson <ch...@chris-wilson.co.uk> Cc: Ramalingam C <ramalinga...@intel.com> Cc: Daniel Vetter <daniel.vet...@ffwll.ch> Cc: Sean Paul <seanp...@chromium.org> Cc: Jani Nikula <jani.nik...@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahti...@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.v...@intel.com> Cc: intel-...@lists.freedesktop.org Cc: <sta...@vger.kernel.org> # v4.17+ Reviewed-by: Ramalingam C <ramalinga...@intel.com> Signed-off-by: Sean Paul <seanp...@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20191212190230.188505-3-s...@poorly.run #v2 Link: https://patchwork.freedesktop.org/patch/msgid/20200117193103.156821-3-s...@poorly.run #v3 Link: https://patchwork.freedesktop.org/patch/msgid/20200218220242.107265-3-s...@poorly.run #v4 Link: https://patchwork.freedesktop.org/patch/msgid/20200305201236.152307-3-s...@poorly.run #v5 Link: https://patchwork.freedesktop.org/patch/msgid/20200429195502.39919-3-s...@poorly.run #v6 Link: https://patchwork.freedesktop.org/patch/msgid/20200623155907.22961-3-s...@poorly.run #v7 Changes in v2: -Added to the set Changes in v3: -None I had previously agreed that clearing the rep_ctl bits on enable would also be a good idea. However when I committed that idea to code, it didn't look right. So let's rely on enables and disables being paired and everything outside of that will be considered a bug Changes in v4: -s/I915_(READ|WRITE)/intel_de_(read|write)/ Changes in v5: -None Changes in v6: -None Changes in v7: -None Changes in v8: -None --- drivers/gpu/drm/i915/display/intel_hdcp.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c index 6189b7583277..1a0d49af2a08 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c @@ -795,6 +795,7 @@ static int _intel_hdcp_disable(struct intel_connector *connector) struct intel_hdcp *hdcp = &connector->hdcp; enum port port = dig_port->base.port; enum transcoder cpu_transcoder = hdcp->cpu_transcoder; + u32 repeater_ctl; int ret; drm_dbg_kms(&dev_priv->drm, "[%s:%d] HDCP is being disabled...\n", @@ -810,6 +811,11 @@ static int _intel_hdcp_disable(struct intel_connector *connector) return -ETIMEDOUT; } + repeater_ctl = intel_hdcp_get_repeater_ctl(dev_priv, cpu_transcoder, + port); + intel_de_write(dev_priv, HDCP_REP_CTL, + intel_de_read(dev_priv, HDCP_REP_CTL) & ~repeater_ctl); + ret = hdcp->shim->toggle_signalling(dig_port, false); if (ret) { drm_err(&dev_priv->drm, "Failed to disable HDCP signalling\n"); -- Sean Paul, Software Engineer, Google / Chromium OS _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
