<feed xmlns='http://www.w3.org/2005/Atom'>
<title>kernel.git/drivers/gpu/drm/tegra/hub.c, branch linux-5.14.y</title>
<subtitle>Hosts the 0x221E linux distro kernel.
</subtitle>
<id>https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-5.14.y</id>
<link rel='self' href='https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-5.14.y'/>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/'/>
<updated>2021-05-31T12:30:11Z</updated>
<entry>
<title>drm/tegra: hub: Implement basic scaling support</title>
<updated>2021-05-31T12:30:11Z</updated>
<author>
<name>Thierry Reding</name>
</author>
<published>2021-05-27T18:27:21Z</published>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/commit/?id=ecc583e22d4689e38a528a8bf841ba1ce58edd7b'/>
<id>urn:sha1:ecc583e22d4689e38a528a8bf841ba1ce58edd7b</id>
<content type='text'>
Parameterize code in several places to allow scaling of windows. Note
that this currently still relies on static programming of the various
metering and memory pool allocation registers. This seems to work for
the common cases, but may eventually need to be updated to support
use-cases with multiple windows and higher bandwidth and latency
requirements.

Signed-off-by: Thierry Reding &lt;treding@nvidia.com&gt;
</content>
</entry>
<entry>
<title>drm/tegra: hub: Fix YUV support</title>
<updated>2021-05-31T12:30:11Z</updated>
<author>
<name>Thierry Reding</name>
</author>
<published>2021-05-27T18:15:46Z</published>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/commit/?id=e16efff4e5f490ce34a8c60d9ae7297dca5eb616'/>
<id>urn:sha1:e16efff4e5f490ce34a8c60d9ae7297dca5eb616</id>
<content type='text'>
The driver currently exposes several YUV formats but fails to properly
program all the registers needed to display such formats. Add the right
programming sequences so that overlay windows can be used to accelerate
color format conversions in multimedia playback use-cases.

Signed-off-by: Thierry Reding &lt;treding@nvidia.com&gt;
</content>
</entry>
<entry>
<title>drm/tegra: Fix shift overflow in tegra_shared_plane_atomic_update</title>
<updated>2021-05-17T10:31:05Z</updated>
<author>
<name>Nathan Chancellor</name>
</author>
<published>2021-04-15T15:29:14Z</published>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/commit/?id=dc9a91d279b721aef7c4f1a2e2e33631d388446f'/>
<id>urn:sha1:dc9a91d279b721aef7c4f1a2e2e33631d388446f</id>
<content type='text'>
Clang warns:

drivers/gpu/drm/tegra/hub.c:513:11: warning: shift count &gt;= width of
type [-Wshift-count-overflow]
                base |= BIT(39);
                        ^~~~~~~

BIT is unsigned long, which is 32-bit on ARCH=arm, hence the overflow
warning. Switch to BIT_ULL, which is 64-bit and will not overflow.

Fixes: 7b6f846785f4 ("drm/tegra: Support sector layout on Tegra194")
Link: https://github.com/ClangBuiltLinux/linux/issues/1351
Signed-off-by: Nathan Chancellor &lt;nathan@kernel.org&gt;
Signed-off-by: Thierry Reding &lt;treding@nvidia.com&gt;
</content>
</entry>
<entry>
<title>drm/tegra: Support sector layout on Tegra194</title>
<updated>2021-03-31T15:42:14Z</updated>
<author>
<name>Thierry Reding</name>
</author>
<published>2021-03-26T14:51:39Z</published>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/commit/?id=7b6f846785f41d57917e36851c120cfbe87f0809'/>
<id>urn:sha1:7b6f846785f41d57917e36851c120cfbe87f0809</id>
<content type='text'>
Tegra194 has a special physical address bit that enables some memory
swizzling logic to support different sector layouts. Support the bit
that selects the sector layout which is passed in the framebuffer
modifier.

Signed-off-by: Thierry Reding &lt;treding@nvidia.com&gt;
</content>
</entry>
<entry>
<title>drm/tegra: Count number of display controllers at runtime</title>
<updated>2021-03-31T15:42:14Z</updated>
<author>
<name>Thierry Reding</name>
</author>
<published>2021-03-26T14:51:38Z</published>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/commit/?id=05d1adfe2a8b5c6a794a9927d1991a00c5d68f1d'/>
<id>urn:sha1:05d1adfe2a8b5c6a794a9927d1991a00c5d68f1d</id>
<content type='text'>
In order to be able to attach planes to all possible display controllers
the exact number of CRTCs must be known. Keep track of the number of the
display controllers that register during initialization.

Signed-off-by: Thierry Reding &lt;treding@nvidia.com&gt;
</content>
</entry>
<entry>
<title>drm/tegra: dc: Inherit DMA mask</title>
<updated>2021-03-31T15:42:14Z</updated>
<author>
<name>Thierry Reding</name>
</author>
<published>2021-03-26T14:51:32Z</published>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/commit/?id=86044e749be77a3544990027244abb20ddb3caf0'/>
<id>urn:sha1:86044e749be77a3544990027244abb20ddb3caf0</id>
<content type='text'>
Inherit the DMA mask from host1x (on Tegra210 and earlier) or the
display hub (on Tegra186 and later). This is necessary in order to
properly map buffers without SMMU support and use the maximum IOVA
space available with SMMU support.

Signed-off-by: Thierry Reding &lt;treding@nvidia.com&gt;
</content>
</entry>
<entry>
<title>Merge tag 'drm-misc-next-2021-03-03' of git://anongit.freedesktop.org/drm/drm-misc into drm-next</title>
<updated>2021-03-16T07:08:46Z</updated>
<author>
<name>Dave Airlie</name>
</author>
<published>2021-03-16T06:45:12Z</published>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/commit/?id=51c3b916a4d7e24b4918925965867fdd9bd8dd59'/>
<id>urn:sha1:51c3b916a4d7e24b4918925965867fdd9bd8dd59</id>
<content type='text'>
drm-misc-next for 5.13:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
  - %p4cc printk format modifier
  - atomic: introduce drm_crtc_commit_wait, rework atomic plane state
    helpers to take the drm_commit_state structure
  - dma-buf: heaps rework to return a struct dma_buf
  - simple-kms: Add plate state helpers
  - ttm: debugfs support, removal of sysfs

Driver Changes:
  - Convert drivers to shadow plane helpers
  - arc: Move to drm/tiny
  - ast: cursor plane reworks
  - gma500: Remove TTM and medfield support
  - mxsfb: imx8mm support
  - panfrost: MMU IRQ handling rework
  - qxl: rework to better handle resources deallocation, locking
  - sun4i: Add alpha properties for UI and VI layers
  - vc4: RPi4 CEC support
  - vmwgfx: doc cleanup

Signed-off-by: Dave Airlie &lt;airlied@redhat.com&gt;

From: Maxime Ripard &lt;maxime@cerno.tech&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20210303100600.dgnkadonzuvfnu22@gilmour
</content>
</entry>
<entry>
<title>drm: Use state helper instead of the plane state pointer</title>
<updated>2021-02-25T07:05:28Z</updated>
<author>
<name>Maxime Ripard</name>
</author>
<published>2021-02-19T12:00:30Z</published>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/commit/?id=37418bf14c1392260d633e3b4448b78c2f15044a'/>
<id>urn:sha1:37418bf14c1392260d633e3b4448b78c2f15044a</id>
<content type='text'>
Many drivers reference the plane-&gt;state pointer in order to get the
current plane state in their atomic_update or atomic_disable hooks,
which would be the new plane state in the global atomic state since
_swap_state happened when those hooks are run.

Use the drm_atomic_get_new_plane_state helper to get that state to make it
more obvious.

This was made using the coccinelle script below:

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

(
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_disable = func,
	...,
 };
|
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_update = func,
	...,
 };
)

@ adds_new_state @
identifier plane_atomic_func.func;
identifier plane, state;
identifier new_state;
@@

 func(struct drm_plane *plane, struct drm_atomic_state *state)
 {
 	...
-	struct drm_plane_state *new_state = plane-&gt;state;
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
	...
 }

@ include depends on adds_new_state @
@@

 #include &lt;drm/drm_atomic.h&gt;

@ no_include depends on !include &amp;&amp; adds_new_state @
@@

+ #include &lt;drm/drm_atomic.h&gt;
  #include &lt;drm/...&gt;

Reviewed-by: Ville Syrjälä &lt;ville.syrjala@linux.intel.com&gt;
Signed-off-by: Maxime Ripard &lt;maxime@cerno.tech&gt;
Acked-by: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Link: https://lore.kernel.org/r/20210219120032.260676-1-maxime@cerno.tech
</content>
</entry>
<entry>
<title>drm/atomic: Pass the full state to planes atomic disable and update</title>
<updated>2021-02-25T07:05:28Z</updated>
<author>
<name>Maxime Ripard</name>
</author>
<published>2021-02-19T12:00:29Z</published>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/commit/?id=977697e20b3d758786b67edc33941e5c410ffe4d'/>
<id>urn:sha1:977697e20b3d758786b67edc33941e5c410ffe4d</id>
<content type='text'>
The current atomic helpers have either their object state being passed as
an argument or the full atomic state.

The former is the pattern that was done at first, before switching to the
latter for new hooks or when it was needed.

Let's convert the remaining helpers to provide a consistent interface,
this time with the planes atomic_update and atomic_disable.

The conversion was done using the coccinelle script below, built tested on
all the drivers.

@@
identifier plane, plane_state;
symbol state;
@@

 struct drm_plane_helper_funcs {
 	...
	void (*atomic_update)(struct drm_plane *plane,
-			      struct drm_plane_state *plane_state);
+			      struct drm_atomic_state *state);
 	...
 }

@@
identifier plane, plane_state;
symbol state;
@@

 struct drm_plane_helper_funcs {
	...
	void (*atomic_disable)(struct drm_plane *plane,
-			       struct drm_plane_state *plane_state);
+			       struct drm_atomic_state *state);
	...
 }

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

(
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_update = func,
	...,
 };
|
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_disable = func,
	...,
 };
)

@@
struct drm_plane_helper_funcs *FUNCS;
identifier f;
identifier crtc_state;
identifier plane, plane_state, state;
expression e;
@@

 f(struct drm_crtc_state *crtc_state)
 {
 	...
 	struct drm_atomic_state *state = e;
 	&lt;+...
(
-	FUNCS-&gt;atomic_disable(plane, plane_state)
+	FUNCS-&gt;atomic_disable(plane, state)
|
-	FUNCS-&gt;atomic_update(plane, plane_state)
+	FUNCS-&gt;atomic_update(plane, state)
)
 	...+&gt;
 }

@@
identifier plane_atomic_func.func;
identifier plane;
symbol state;
@@

 func(struct drm_plane *plane,
-    struct drm_plane_state *state)
+    struct drm_plane_state *old_plane_state)
 {
	&lt;...
-	state
+	old_plane_state
	...&gt;
 }

@ ignores_old_state @
identifier plane_atomic_func.func;
identifier plane, old_state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *old_state)
 {
	... when != old_state
 }

@ adds_old_state depends on plane_atomic_func &amp;&amp; !ignores_old_state @
identifier plane_atomic_func.func;
identifier plane, plane_state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *plane_state)
 {
+	struct drm_plane_state *plane_state = drm_atomic_get_old_plane_state(state, plane);
 	...
 }

@ depends on plane_atomic_func @
identifier plane_atomic_func.func;
identifier plane, plane_state;
@@

 func(struct drm_plane *plane,
-     struct drm_plane_state *plane_state
+     struct drm_atomic_state *state
     )
 { ... }

@ include depends on adds_old_state @
@@

 #include &lt;drm/drm_atomic.h&gt;

@ no_include depends on !include &amp;&amp; adds_old_state @
@@

+ #include &lt;drm/drm_atomic.h&gt;
  #include &lt;drm/...&gt;

@@
identifier plane_atomic_func.func;
identifier plane, state;
identifier plane_state;
@@

 func(struct drm_plane *plane, struct drm_atomic_state *state) {
 	...
 	struct drm_plane_state *plane_state = drm_atomic_get_old_plane_state(state, plane);
 	&lt;+...
-	plane_state-&gt;state
+	state
 	...+&gt;
 }

Reviewed-by: Laurent Pinchart &lt;laurent.pinchart@ideasonboard.com&gt;
Signed-off-by: Maxime Ripard &lt;maxime@cerno.tech&gt;
Acked-by: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20210219120032.260676-9-maxime@cerno.tech
</content>
</entry>
<entry>
<title>drm: Rename plane-&gt;state variables in atomic update and disable</title>
<updated>2021-02-24T19:27:12Z</updated>
<author>
<name>Maxime Ripard</name>
</author>
<published>2021-02-19T12:00:28Z</published>
<link rel='alternate' type='text/html' href='https://git.0xinfinity.dev/distro/kernel.git/commit/?id=41016fe1028e4b0ee6f436f928564699898ec2b0'/>
<id>urn:sha1:41016fe1028e4b0ee6f436f928564699898ec2b0</id>
<content type='text'>
Some drivers are storing the plane-&gt;state pointer in atomic_update and
atomic_disable in a variable simply called state, while the state passed
as an argument is called old_state.

In order to ease subsequent reworks and to avoid confusing or
inconsistent names, let's rename those variables to new_state.

This was done using the following coccinelle script, plus some manual
changes for mtk and tegra.

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

(
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_disable = func,
	...,
 };
|
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_update = func,
	...,
 };
)

@ moves_new_state_old_state @
identifier plane_atomic_func.func;
identifier plane;
symbol old_state;
symbol state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *old_state)
 {
 	...
-	struct drm_plane_state *state = plane-&gt;state;
+	struct drm_plane_state *new_state = plane-&gt;state;
	...
 }

@ depends on moves_new_state_old_state @
identifier plane_atomic_func.func;
identifier plane;
identifier old_state;
symbol state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *old_state)
 {
 	&lt;...
-	state
+	new_state
	...&gt;
 }

@ moves_new_state_oldstate @
identifier plane_atomic_func.func;
identifier plane;
symbol oldstate;
symbol state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *oldstate)
 {
 	...
-	struct drm_plane_state *state = plane-&gt;state;
+	struct drm_plane_state *newstate = plane-&gt;state;
	...
 }

@ depends on moves_new_state_oldstate @
identifier plane_atomic_func.func;
identifier plane;
identifier old_state;
symbol state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *old_state)
 {
 	&lt;...
-	state
+	newstate
	...&gt;
 }

@ moves_new_state_old_pstate @
identifier plane_atomic_func.func;
identifier plane;
symbol old_pstate;
symbol state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *old_pstate)
 {
 	...
-	struct drm_plane_state *state = plane-&gt;state;
+	struct drm_plane_state *new_pstate = plane-&gt;state;
	...
 }

@ depends on moves_new_state_old_pstate @
identifier plane_atomic_func.func;
identifier plane;
identifier old_pstate;
symbol state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *old_pstate)
 {
 	&lt;...
-	state
+	new_pstate
	...&gt;
 }

Reviewed-by: Ville Syrjälä &lt;ville.syrjala@linux.intel.com&gt;
Signed-off-by: Maxime Ripard &lt;maxime@cerno.tech&gt;
Acked-by: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
Link: https://patchwork.freedesktop.org/patch/msgid/20210219120032.260676-8-maxime@cerno.tech
</content>
</entry>
</feed>
