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From: Sean Paul <sean@poorly.run>
To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org
Cc: daniel.vetter@ffwll.ch, Sean Paul <seanpaul@chromium.org>,
	juston.li@intel.com, rodrigo.vivi@intel.com
Subject: [PATCH v5 03/16] drm/i915: WARN if HDCP signalling is enabled upon disable
Date: Thu,  5 Mar 2020 15:12:23 -0500	[thread overview]
Message-ID: <20200305201236.152307-4-sean@poorly.run> (raw)
In-Reply-To: <20200305201236.152307-1-sean@poorly.run>

From: Sean Paul <seanpaul@chromium.org>

HDCP signalling should not be left on, WARN if it is

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191212190230.188505-4-sean@poorly.run #v2
Link: https://patchwork.freedesktop.org/patch/msgid/20200117193103.156821-4-sean@poorly.run #v3
Link: https://patchwork.freedesktop.org/patch/msgid/20200218220242.107265-4-sean@poorly.run #v4

Changes in v2:
-Added to the set in lieu of just clearing the bit
Changes in v3:
-None
Changes in v4:
-None
Changes in v5:
-Change WARN_ON to drm_WARN_ON
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 73d0f4648c06a..4aff5717e9428 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -1593,6 +1593,8 @@ void intel_ddi_disable_transcoder_func(const struct intel_crtc_state *crtc_state
 	val = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
 	val &= ~TRANS_DDI_FUNC_ENABLE;
 
+	drm_WARN_ON(crtc->base.dev, val & TRANS_DDI_HDCP_SIGNALLING);
+
 	if (INTEL_GEN(dev_priv) >= 12) {
 		if (!intel_dp_mst_is_master_trans(crtc_state)) {
 			val &= ~(TGL_TRANS_DDI_PORT_MASK |
-- 
Sean Paul, Software Engineer, Google / Chromium OS

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  parent reply	other threads:[~2020-03-05 20:12 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-05 20:12 [PATCH v5 00/16] drm/i915: Add support for HDCP 1.4 over MST connectors Sean Paul
2020-03-05 20:12 ` [PATCH v5 01/16] drm/i915: Fix sha_text population code Sean Paul
2020-03-07 23:20   ` Sasha Levin
2020-03-05 20:12 ` [PATCH v5 02/16] drm/i915: Clear the repeater bit on HDCP disable Sean Paul
2020-03-07 23:20   ` Sasha Levin
2020-03-05 20:12 ` Sean Paul [this message]
2020-03-05 20:12 ` [PATCH v5 04/16] drm/i915: Intercept Aksv writes in the aux hooks Sean Paul
2020-03-05 20:12 ` [PATCH v5 05/16] drm/i915: Use the cpu_transcoder in intel_hdcp to toggle HDCP signalling Sean Paul
2020-03-05 20:12 ` [PATCH v5 06/16] drm/i915: Factor out hdcp->value assignments Sean Paul
2020-03-05 20:12 ` [PATCH v5 07/16] drm/i915: Protect workers against disappearing connectors Sean Paul
2020-03-05 20:12 ` [PATCH v5 08/16] drm/i915: Don't fully disable HDCP on a port if multiple pipes are using it Sean Paul
2020-03-05 20:12 ` [PATCH v5 09/16] drm/i915: Support DP MST in enc_to_dig_port() function Sean Paul
2020-03-05 20:12 ` [PATCH v5 10/16] drm/i915: Use ddi_update_pipe in intel_dp_mst Sean Paul
2020-03-05 20:12 ` [PATCH v5 11/16] drm/i915: Factor out HDCP shim functions from dp for use by dp_mst Sean Paul
2020-03-05 20:12 ` [PATCH v5 12/16] drm/i915: Plumb port through hdcp init Sean Paul
2020-03-05 20:12 ` [PATCH v5 13/16] drm/i915: Add connector to hdcp_shim->check_link() Sean Paul
2020-03-05 20:12 ` [PATCH v5 14/16] drm/mst: Add support for QUERY_STREAM_ENCRYPTION_STATUS MST sideband message Sean Paul
2020-03-26 16:46   ` [Intel-gfx] " Lyude Paul
2020-04-07 12:13     ` Jani Nikula
2020-03-05 20:12 ` [PATCH v5 15/16] drm/i915: Print HDCP version info for all connectors Sean Paul
2020-03-05 20:12 ` [PATCH v5 16/16] drm/i915: Add HDCP 1.4 support for MST connectors Sean Paul

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