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From: Sean Paul <sean@poorly.run>
To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
	juston.li@intel.com, jani.nikula@linux.intel.com,
	joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com,
	anshuman.gupta@intel.com
Cc: David Airlie <airlied@linux.ie>,
	daniel.vetter@ffwll.ch, Sean Paul <seanpaul@chromium.org>
Subject: [Intel-gfx] [PATCH v8 03/17] drm/i915: WARN if HDCP signalling is enabled upon disable
Date: Tue, 18 Aug 2020 11:38:51 -0400	[thread overview]
Message-ID: <20200818153910.27894-4-sean@poorly.run> (raw)
In-Reply-To: <20200818153910.27894-1-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
Link: https://patchwork.freedesktop.org/patch/msgid/20200305201236.152307-4-sean@poorly.run #v5
Link: https://patchwork.freedesktop.org/patch/msgid/20200429195502.39919-4-sean@poorly.run #v6
Link: https://patchwork.freedesktop.org/patch/msgid/20200623155907.22961-4-sean@poorly.run #v7

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
Changes in v6:
-None
Changes in v7:
-Rebased, variable name changed from 'ctl' to 'val'
Changes in v8:
-None
---
 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 de5b216561d8..b02cd36647d6 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -1791,6 +1791,8 @@ void intel_ddi_disable_transcoder_func(const struct intel_crtc_state *crtc_state
 
 	ctl = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
 
+	drm_WARN_ON(crtc->base.dev, ctl & TRANS_DDI_HDCP_SIGNALLING);
+
 	ctl &= ~TRANS_DDI_FUNC_ENABLE;
 
 	if (IS_GEN_RANGE(dev_priv, 8, 10))
-- 
Sean Paul, Software Engineer, Google / Chromium OS

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  parent reply	other threads:[~2020-08-18 15:39 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-18 15:38 [Intel-gfx] [PATCH v8 00/17] drm/i915: Add support for HDCP 1.4 over MST Sean Paul
2020-08-18 15:38 ` [Intel-gfx] [PATCH v8 01/17] drm/i915: Fix sha_text population code Sean Paul
2020-08-26 13:53   ` Sasha Levin
2020-08-18 15:38 ` [Intel-gfx] [PATCH v8 02/17] drm/i915: Clear the repeater bit on HDCP disable Sean Paul
2020-08-26 13:53   ` Sasha Levin
2020-08-18 15:38 ` Sean Paul [this message]
2020-08-18 15:38 ` [Intel-gfx] [PATCH v8 04/17] drm/i915: Intercept Aksv writes in the aux hooks Sean Paul
2020-08-18 15:38 ` [Intel-gfx] [PATCH v8 05/17] drm/i915: Use the cpu_transcoder in intel_hdcp to toggle HDCP signalling Sean Paul
2020-08-18 15:38 ` [Intel-gfx] [PATCH v8 06/17] drm/i915: Factor out hdcp->value assignments Sean Paul
2020-08-18 15:38 ` [Intel-gfx] [PATCH v8 07/17] drm/i915: Protect workers against disappearing connectors Sean Paul
2020-08-18 15:38 ` [Intel-gfx] [PATCH v8 08/17] drm/i915: Clean up intel_hdcp_disable Sean Paul
2020-08-18 15:38 ` [Intel-gfx] [PATCH v8 09/17] drm/i915: Don't fully disable HDCP on a port if multiple pipes are using it Sean Paul
2020-08-18 15:38 ` [Intel-gfx] [PATCH v8 10/17] drm/i915: Support DP MST in enc_to_dig_port() function Sean Paul
2020-08-18 15:38 ` [Intel-gfx] [PATCH v8 11/17] drm/i915: Use ddi_update_pipe in intel_dp_mst Sean Paul
2020-08-18 15:39 ` [Intel-gfx] [PATCH v8 12/17] drm/i915: Factor out HDCP shim functions from dp for use by dp_mst Sean Paul
2020-08-18 15:39 ` [Intel-gfx] [PATCH v8 13/17] drm/i915: Plumb port through hdcp init Sean Paul
2020-08-18 15:39 ` [Intel-gfx] [PATCH v8 14/17] drm/i915: Add connector to hdcp_shim->check_link() Sean Paul
2020-08-18 15:39 ` [Intel-gfx] [PATCH v8 15/17] drm/mst: Add support for QUERY_STREAM_ENCRYPTION_STATUS MST sideband message Sean Paul
2020-08-18 22:12   ` Lyude Paul
2020-08-19 14:31     ` [Intel-gfx] [PATCH v8.5] " Sean Paul
2020-08-18 15:39 ` [Intel-gfx] [PATCH v8 16/17] drm/i915: Print HDCP version info for all connectors Sean Paul
2020-08-18 15:39 ` [Intel-gfx] [PATCH v8 17/17] drm/i915: Add HDCP 1.4 support for MST connectors Sean Paul
2020-08-18 16:04 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915: Add support for HDCP 1.4 over MST (rev2) Patchwork
2020-08-18 16:06 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2020-08-18 16:21 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-08-18 17:28 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2020-08-19 15:21 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915: Add support for HDCP 1.4 over MST (rev3) Patchwork
2020-08-19 15:23 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2020-08-19 15:38 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-08-20  7:24 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2020-09-01  7:39 ` [Intel-gfx] [PATCH v8 00/17] drm/i915: Add support for HDCP 1.4 over MST Ramalingam C

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