<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c, branch v5.12.2</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>drm/amdgpu/display: remove hdcp_srm sysfs on device removal</title>
<updated>2021-02-18T21:43:08+00:00</updated>
<author>
<name>Nirmoy Das</name>
<email>nirmoy.das@amd.com</email>
</author>
<published>2021-02-10T17:11:04+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=e96b1b2974989c6a25507b527843ede7594efc85'/>
<id>e96b1b2974989c6a25507b527843ede7594efc85</id>
<content type='text'>
Fixes: 9037246bb2da5 ("drm/amd/display: Add sysfs interface for set/get srm")

Signed-off-by: Nirmoy Das &lt;nirmoy.das@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Fixes: 9037246bb2da5 ("drm/amd/display: Add sysfs interface for set/get srm")

Signed-off-by: Nirmoy Das &lt;nirmoy.das@amd.com&gt;
Acked-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/display: correct some hdcp variable naming</title>
<updated>2021-02-02T17:09:09+00:00</updated>
<author>
<name>Wenjing Liu</name>
<email>wenjing.liu@amd.com</email>
</author>
<published>2020-12-10T19:21:25+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=aac6d4391a0a354bcb59885ce990ca934563143a'/>
<id>aac6d4391a0a354bcb59885ce990ca934563143a</id>
<content type='text'>
[why]
In HDCP update stream config interface, some variables are named as
xxx_supported, but in fact the variable indicates whether or not xxx_enabled.
Correct the naming so it is less confusing to read the code.

Signed-off-by: Wenjing Liu &lt;wenjing.liu@amd.com&gt;
Reviewed-by: George Shen &lt;George.Shen@amd.com&gt;
Acked-by: Anson Jacob &lt;Anson.Jacob@amd.com&gt;
Tested-by: Daniel Wheeler &lt;daniel.wheeler@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[why]
In HDCP update stream config interface, some variables are named as
xxx_supported, but in fact the variable indicates whether or not xxx_enabled.
Correct the naming so it is less confusing to read the code.

Signed-off-by: Wenjing Liu &lt;wenjing.liu@amd.com&gt;
Reviewed-by: George Shen &lt;George.Shen@amd.com&gt;
Acked-by: Anson Jacob &lt;Anson.Jacob@amd.com&gt;
Tested-by: Daniel Wheeler &lt;daniel.wheeler@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/display: fix return value check for hdcp_work</title>
<updated>2020-09-29T21:07:34+00:00</updated>
<author>
<name>Flora Cui</name>
<email>flora.cui@amd.com</email>
</author>
<published>2020-09-23T06:42:59+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=898c7302f4de1d91065e80fc46552b3ec70894ff'/>
<id>898c7302f4de1d91065e80fc46552b3ec70894ff</id>
<content type='text'>
max_caps might be 0, thus hdcp_work might be ZERO_SIZE_PTR

Signed-off-by: Flora Cui &lt;flora.cui@amd.com&gt;
Reviewed-by: Feifei Xu &lt;Feifei.Xu@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
max_caps might be 0, thus hdcp_work might be ZERO_SIZE_PTR

Signed-off-by: Flora Cui &lt;flora.cui@amd.com&gt;
Reviewed-by: Feifei Xu &lt;Feifei.Xu@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu/display: Unlock mutex on error</title>
<updated>2020-07-01T05:59:26+00:00</updated>
<author>
<name>John van der Kamp</name>
<email>sjonny@suffe.me.uk</email>
</author>
<published>2020-06-23T21:30:54+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=8ef51b428e6d935736d5fa7427cc063b6bb5b08a'/>
<id>8ef51b428e6d935736d5fa7427cc063b6bb5b08a</id>
<content type='text'>
Make sure we pass through ret label to unlock the mutex.

Signed-off-by: John van der Kamp &lt;sjonny@suffe.me.uk&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Make sure we pass through ret label to unlock the mutex.

Signed-off-by: John van der Kamp &lt;sjonny@suffe.me.uk&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/display: enable assr</title>
<updated>2020-07-01T05:59:25+00:00</updated>
<author>
<name>Bhawanpreet Lakha</name>
<email>Bhawanpreet.Lakha@amd.com</email>
</author>
<published>2020-06-01T21:22:41+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ef9de1876aa774342c57299b70c1b8913ee5436a'/>
<id>ef9de1876aa774342c57299b70c1b8913ee5436a</id>
<content type='text'>
[Why]
assr is content protection for eDP, in order to use it we need to call
psp ta (dtm)

[How]
We have a enable_assr callback, hook into this and call the correct psp
cmd id to enable assr.

Signed-off-by: Bhawanpreet Lakha &lt;Bhawanpreet.Lakha@amd.com&gt;
Reviewed-by: Hersen Wu &lt;hersenxs.wu@amd.com&gt;
Acked-by: Rodrigo Siqueira &lt;Rodrigo.Siqueira@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[Why]
assr is content protection for eDP, in order to use it we need to call
psp ta (dtm)

[How]
We have a enable_assr callback, hook into this and call the correct psp
cmd id to enable assr.

Signed-off-by: Bhawanpreet Lakha &lt;Bhawanpreet.Lakha@amd.com&gt;
Reviewed-by: Hersen Wu &lt;hersenxs.wu@amd.com&gt;
Acked-by: Rodrigo Siqueira &lt;Rodrigo.Siqueira@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/amdgpu: Update update_config() logic</title>
<updated>2020-05-11T22:03:31+00:00</updated>
<author>
<name>Leo (Hanghong) Ma</name>
<email>hanghong.ma@amd.com</email>
</author>
<published>2020-05-08T18:18:07+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=3528cae940d75f3d6f9ce905acb3c3332e2d5067'/>
<id>3528cae940d75f3d6f9ce905acb3c3332e2d5067</id>
<content type='text'>
[Why]
For MST case: when update_config is called to disable a stream,
this clears the settings for all the streams on that link.
We should only clear the settings for the stream that was disabled.

[How]
Clear the settings after the call to remove display is called.

Reviewed-by: Harry Wentland &lt;harry.wentland@amd.com&gt;
Reviewed-by: Bhawanpreet Lakha &lt;Bhawanpreet.Lakha@amd.com&gt;
Signed-off-by: Leo (Hanghong) Ma &lt;hanghong.ma@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[Why]
For MST case: when update_config is called to disable a stream,
this clears the settings for all the streams on that link.
We should only clear the settings for the stream that was disabled.

[How]
Clear the settings after the call to remove display is called.

Reviewed-by: Harry Wentland &lt;harry.wentland@amd.com&gt;
Reviewed-by: Bhawanpreet Lakha &lt;Bhawanpreet.Lakha@amd.com&gt;
Signed-off-by: Leo (Hanghong) Ma &lt;hanghong.ma@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/display: increase HDCP authentication delay</title>
<updated>2020-03-31T16:44:29+00:00</updated>
<author>
<name>Bhawanpreet Lakha</name>
<email>Bhawanpreet.Lakha@amd.com</email>
</author>
<published>2020-03-30T17:43:23+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=d6e7042f4e80f2f139c23237da63ffcb060b0710'/>
<id>d6e7042f4e80f2f139c23237da63ffcb060b0710</id>
<content type='text'>
[Why]
Some displays have an issue where the hdcp chips are initialized after the
display has already lit up. This means we can sometimes authentication too early
and cause authentication failures.

This happens when HDCP is enabled and the display is power cycled. Normally we
will authenticate 2 seconds after the display is lit, but some displays need a
bit more time.

[How]
Increase delay to 3 second before we start authentication.

Signed-off-by: Bhawanpreet Lakha &lt;Bhawanpreet.Lakha@amd.com&gt;
Reviewed-by: Nicholas Kazlauskas &lt;nicholas.kazlauskas@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[Why]
Some displays have an issue where the hdcp chips are initialized after the
display has already lit up. This means we can sometimes authentication too early
and cause authentication failures.

This happens when HDCP is enabled and the display is power cycled. Normally we
will authenticate 2 seconds after the display is lit, but some displays need a
bit more time.

[How]
Increase delay to 3 second before we start authentication.

Signed-off-by: Bhawanpreet Lakha &lt;Bhawanpreet.Lakha@amd.com&gt;
Reviewed-by: Nicholas Kazlauskas &lt;nicholas.kazlauskas@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/display: Correctly cancel future watchdog and callback events</title>
<updated>2020-03-31T16:44:29+00:00</updated>
<author>
<name>Bhawanpreet Lakha</name>
<email>Bhawanpreet.Lakha@amd.com</email>
</author>
<published>2020-03-30T17:37:07+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=2ebbe7c9d11d7fea296c4997b80d2590a0928424'/>
<id>2ebbe7c9d11d7fea296c4997b80d2590a0928424</id>
<content type='text'>
[Why]
-We need to cancel future callbacks/watchdogs events when a callback/watchdog event happens

[How]
-fix typo in event_callback()
	-cancel callback, not watchdog
-cancel watchdog events in event_watchdog_timer().

Signed-off-by: Bhawanpreet Lakha &lt;Bhawanpreet.Lakha@amd.com&gt;
Reviewed-by: Nicholas Kazlauskas &lt;nicholas.kazlauskas@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[Why]
-We need to cancel future callbacks/watchdogs events when a callback/watchdog event happens

[How]
-fix typo in event_callback()
	-cancel callback, not watchdog
-cancel watchdog events in event_watchdog_timer().

Signed-off-by: Bhawanpreet Lakha &lt;Bhawanpreet.Lakha@amd.com&gt;
Reviewed-by: Nicholas Kazlauskas &lt;nicholas.kazlauskas@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/display: Don't try hdcp1.4 when content_type is set to type1</title>
<updated>2020-03-31T16:44:29+00:00</updated>
<author>
<name>Bhawanpreet Lakha</name>
<email>Bhawanpreet.Lakha@amd.com</email>
</author>
<published>2020-03-30T17:29:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=c2850c125d919efbb3a9ab46410d23912934f585'/>
<id>c2850c125d919efbb3a9ab46410d23912934f585</id>
<content type='text'>
[Why]
When content type property is set to 1. We should enable hdcp2.2 and if we cant
then stop. Currently the way it works in DC is that if we fail hdcp2, we will
try hdcp1 after.

[How]
Use link config to force disable hdcp1.4 when type1 is set.

Signed-off-by: Bhawanpreet Lakha &lt;Bhawanpreet.Lakha@amd.com&gt;
Reviewed-by: Nicholas Kazlauskas &lt;nicholas.kazlauskas@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[Why]
When content type property is set to 1. We should enable hdcp2.2 and if we cant
then stop. Currently the way it works in DC is that if we fail hdcp2, we will
try hdcp1 after.

[How]
Use link config to force disable hdcp1.4 when type1 is set.

Signed-off-by: Bhawanpreet Lakha &lt;Bhawanpreet.Lakha@amd.com&gt;
Reviewed-by: Nicholas Kazlauskas &lt;nicholas.kazlauskas@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/display: determine is mst hdcp based on stream instead of sink signal</title>
<updated>2020-03-09T17:49:06+00:00</updated>
<author>
<name>Wenjing Liu</name>
<email>Wenjing.Liu@amd.com</email>
</author>
<published>2020-02-24T22:22:36+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=b6a1a0e76084c541382050606830580740ef9e84'/>
<id>b6a1a0e76084c541382050606830580740ef9e84</id>
<content type='text'>
[why]
It is possible even if sink signal is MST but driver enables SST stream.
We should not determine if we should do MST authentication based on
sink's capability.
Instead we should determine whether to do MST authentication based on
what we have enabled in stream.

Signed-off-by: Wenjing Liu &lt;Wenjing.Liu@amd.com&gt;
Reviewed-by: Ashley Thomas &lt;Ashley.Thomas2@amd.com&gt;
Acked-by: Rodrigo Siqueira &lt;Rodrigo.Siqueira@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[why]
It is possible even if sink signal is MST but driver enables SST stream.
We should not determine if we should do MST authentication based on
sink's capability.
Instead we should determine whether to do MST authentication based on
what we have enabled in stream.

Signed-off-by: Wenjing Liu &lt;Wenjing.Liu@amd.com&gt;
Reviewed-by: Ashley Thomas &lt;Ashley.Thomas2@amd.com&gt;
Acked-by: Rodrigo Siqueira &lt;Rodrigo.Siqueira@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
</pre>
</div>
</content>
</entry>
</feed>
