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Denton Gentry denton.gentry at gmail.com
Sat May 21 10:21:53 PDT 2016 

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On May 20, 2016 4:55 AM, <yocto-request at yoctoproject.org> wrote:

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Today's Topics:

   1. Re: [meta-raspberrypi][PATCH 5/8] Support for vc4 graphics
      driver: upgrade 4.4 kernel to 4.4.10 (Andrei Gherzan)
   2. Re: ***SPAM*** Re: [meta-raspberrypi][PATCH 5/8] Support for
      vc4 graphics driver: upgrade 4.4 kernel to 4.4.10 (Herve Jourdain)
   3. Re: ***SPAM*** Re: [meta-raspberrypi][PATCH 5/8] Support for
      vc4 graphics driver: upgrade 4.4 kernel to 4.4.10 (Andrei Gherzan)
   4. [meta-raspberrypi][PATCH v2 00/13] Support for VC4 graphics
      driver (Herve Jourdain)
   5. [meta-raspberrypi][PATCH v2 01/13] rpi-default-providers.inc:
      change default providers to support vc4graphics (Herve Jourdain)
   6. [meta-raspberrypi][PATCH v2 02/13] rpi-base.inc: add
      vc4-kms-v3d to the overlays to support vc4graphics (Herve Jourdain)


----------------------------------------------------------------------

Message: 1
Date: Fri, 20 May 2016 12:39:35 +0200
From: Andrei Gherzan <andrei at gherzan.ro>
To: Khem Raj <raj.khem at gmail.com>
Cc: Yocto Project <yocto at yoctoproject.org>
Subject: Re: [yocto] [meta-raspberrypi][PATCH 5/8] Support for vc4
        graphics driver: upgrade 4.4 kernel to 4.4.10
Message-ID: <20160520103935.GI9848 at resin.home>
Content-Type: text/plain; charset="iso-8859-1"

On Thu, May 19, 2016 at 09:02:04AM -0700, Khem Raj wrote:
> On Thu, May 19, 2016 at 8:11 AM, Andrei Gherzan <andrei at gherzan.ro> wrote:
> > On Wed, May 18, 2016 at 11:46:39PM +0200, Andreas M?ller wrote:
> >> On Wed, May 18, 2016 at 7:32 PM, Herve Jourdain <herve.jourdain at neuf.fr>
wrote:
> >> > One thing I didn't make configurable, but that maybe could be, is
the parameter passed to the overlay.
> >> > I selected cma-256, based on experience from other people, and
because my configuration is RPI2/3 with 1G of memory.
> >> > I realize it might not work well with RPI0/1, which have less memory
available...
> >> > So even if I believe cma-256 is a good default value, it might be
made selectable by the user, if we want to consider vc4 on RPI0/1.
> >> I played around with vc4 to but did not manage to get it work for an
> >> elder version 4.1 of kernel.
> >>
> >> I did in rpi-config:
> >>
> >> CMA_SIZE = "cma-256"
> >> CMA_SIZE_raspberrypi = "cma-64"
>
>
> >
> > I sent reply about this too. This is definitely one solution would I
> > would rather have a CMA_SIZE default value and a python function to
> > check its match with board variant. Cause in this way a user might be
> > able to use cma-96 on rapsberrypi.
> >
> >> CMA_SIZE_raspberrypi0 = "cma-128"
>
>
> setting CMA_SIZE should be moved into machine.conf file IMO
>

That's actually a good idea. I would say to have it in machine as a
default value for that specific machine. And then be able to overwrite
it as user needs. Optionally have a python function to check that what
user requested makes sense for the selected board.

--
Andrei Gherzan
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------------------------------

Message: 2
Date: Fri, 20 May 2016 12:47:40 +0200
From: Herve Jourdain <herve.jourdain at neuf.fr>
To: 'Andrei Gherzan' <andrei at gherzan.ro>, 'Khem Raj'
        <raj.khem at gmail.com>
Cc: 'Yocto Project' <yocto at yoctoproject.org>
Subject: Re: [yocto] ***SPAM*** Re: [meta-raspberrypi][PATCH 5/8]
        Support for vc4 graphics driver: upgrade 4.4 kernel to 4.4.10
Message-ID: <03f601d1b285$0a8c81f0$1fa585d0$@neuf.fr>
Content-Type: text/plain; charset=iso-8859-1

Hi Andrei, Khem,

That's what I implemented in the upcoming v2 - except for the python
checking function part.
One thing, shall I call the variable CMA_SIZE, or VC4_CMA_SIZE?
I know CMA is kind of common, but we're using this only to trigger a
parameter to the v4c overlay.
Any opinion? (in the current implementation, I went with CMA_SIZE, but I
have doubts...)

Herve

-----Original Message-----
From: yocto-bounces at yoctoproject.org [mailto:yocto-bounces at yoctoproject.org]
On Behalf Of Andrei Gherzan
Sent: vendredi 20 mai 2016 12:40
To: Khem Raj <raj.khem at gmail.com>
Cc: Yocto Project <yocto at yoctoproject.org>
Subject: ***SPAM*** Re: [yocto] [meta-raspberrypi][PATCH 5/8] Support for
vc4 graphics driver: upgrade 4.4 kernel to 4.4.10

On Thu, May 19, 2016 at 09:02:04AM -0700, Khem Raj wrote:
> On Thu, May 19, 2016 at 8:11 AM, Andrei Gherzan <andrei at gherzan.ro> wrote:
> > On Wed, May 18, 2016 at 11:46:39PM +0200, Andreas M?ller wrote:
> >> On Wed, May 18, 2016 at 7:32 PM, Herve Jourdain
<herve.jourdain at neuf.fr> wrote:
> >> > One thing I didn't make configurable, but that maybe could be, is the
parameter passed to the overlay.
> >> > I selected cma-256, based on experience from other people, and
because my configuration is RPI2/3 with 1G of memory.
> >> > I realize it might not work well with RPI0/1, which have less memory
available...
> >> > So even if I believe cma-256 is a good default value, it might be
made selectable by the user, if we want to consider vc4 on RPI0/1.
> >> I played around with vc4 to but did not manage to get it work for
> >> an elder version 4.1 of kernel.
> >>
> >> I did in rpi-config:
> >>
> >> CMA_SIZE = "cma-256"
> >> CMA_SIZE_raspberrypi = "cma-64"
>
>
> >
> > I sent reply about this too. This is definitely one solution would I
> > would rather have a CMA_SIZE default value and a python function to
> > check its match with board variant. Cause in this way a user might
> > be able to use cma-96 on rapsberrypi.
> >
> >> CMA_SIZE_raspberrypi0 = "cma-128"
>
>
> setting CMA_SIZE should be moved into machine.conf file IMO
>

That's actually a good idea. I would say to have it in machine as a default
value for that specific machine. And then be able to overwrite it as user
needs. Optionally have a python function to check that what user requested
makes sense for the selected board.

--
Andrei Gherzan



------------------------------

Message: 3
Date: Fri, 20 May 2016 12:51:56 +0200
From: Andrei Gherzan <andrei at gherzan.ro>
To: Herve Jourdain <herve.jourdain at neuf.fr>
Cc: 'Yocto Project' <yocto at yoctoproject.org>
Subject: Re: [yocto] ***SPAM*** Re: [meta-raspberrypi][PATCH 5/8]
        Support for vc4 graphics driver: upgrade 4.4 kernel to 4.4.10
Message-ID: <20160520105156.GK9848 at resin.home>
Content-Type: text/plain; charset="us-ascii"

On Fri, May 20, 2016 at 12:47:40PM +0200, Herve Jourdain wrote:
> Hi Andrei, Khem,
>
> That's what I implemented in the upcoming v2 - except for the python
> checking function part.
> One thing, shall I call the variable CMA_SIZE, or VC4_CMA_SIZE?
> I know CMA is kind of common, but we're using this only to trigger a
> parameter to the v4c overlay.
> Any opinion? (in the current implementation, I went with CMA_SIZE, but I
> have doubts...)
>

Hint: Try to reply in line if possible. It is easier to follow the
discussion in this way.

I would vote for VC4_CMA_SIZE. It sounds safer.

--
Andrei Gherzan
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------------------------------

Message: 4
Date: Fri, 20 May 2016 19:51:40 +0800
From: Herve Jourdain <herve.jourdain at neuf.fr>
To: yocto at yoctoproject.org
Subject: [yocto] [meta-raspberrypi][PATCH v2 00/13] Support for VC4
        graphics driver
Message-ID: <1463745113-55142-1-git-send-email-herve.jourdain at neuf.fr>

This v2 series addresses the following issues with the first series:
a. Fix the 4.4.10 kernel revision
b. Effectively add vc4-kms-v3d overlay to the list of overlays to build
(forgotten previously)
c. Make the parameter to the v4c-kms-v3d overlay configurable
d. Add default values for the cma parameter to the v4c-kms-v3d overlay,
depending on the board (and the memory it has)

This patch series enables the support for the VC4 graphics driver from Eric
Anholt.
There was a previous patch series by Javier Martinez Canillas, but it
required use of a different kernel.
VC4 is now supported in the raspberrypi official kernel, at least for
4.4.9+.
The support in 4.1 exists, but it is NOT STABLE, so it has been deemed
unreasonable to support VC4 with 4.1 kernels.

THEREFORE, VC4 graphics is supported ONLY for kernel versions 4.4.9 and
later.

This patch series proposes to support VC4 by only adding 'vc4graphics' to
MACHINE_FEATURES, for raspberrypi. If this is set, it will trigger all the
necessary configuration/changes to use the VC4 driver, including
mesa/wayland/weston currently, and adding the overlay required.
In order for this series to work, some previous patches are needed (support
for .dtbo, and fix of the mesa packaging when there is no DRI driver).
The memory reserved for the VC4 driver has default values depending on the
version of the board used, but it can be configured by setting VC4_CMA_SIZE
to a value supported by the overlay ('cma-256', 'cma-192', 'cma-128',
'cma-96', 'cma-64').
'cma-256' is the recommended value, but it might not be possible on boards
with 512MB or DRAM, or less...
'cma-64' is known to not being able to support FHD/1080p.

It was tested with wayland/weston, without the support for X11.

This patch series depends on two other patch series previously posted, that
enable the support for .dtbo overlay files.

Herve Jourdain (13):
  rpi-default-providers.inc: change default providers to support
    vc4graphics
  rpi-base.inc: add vc4-kms-v3d to the overlays to support vc4graphics
  raspberrypi.conf: set the default value of VC4_CMA_SIZE to support
    vc4graphics
  raspberrypi0.conf: set the default value of VC4_CMA_SIZE to support
    vc4graphics
  raspberrypi2.conf: set the default value of VC4_CMA_SIZE to support
    vc4graphics
  raspberrypi3.conf: set the default value of VC4_CMA_SIZE to support
    vc4graphics
  firmware.inc: bump version to support vc4graphics
  rpi-config_git.bb: add v4c overlay to config.txt to support
    vc4graphics
  wayland/weston_%.bbappend: modify configuration options to support
    vc4graphics
  weston/weston_%.bbappend: modify configuration options to support
    vc4graphics
  mesa_%.bbappend: new file to add the correct configuration options to
    support vc4graphics
  linux-raspberrypi_4.4.bb: bump the kernel revision to 4.4.10 to
    support vc4graphics
  linux-rpi.inc: add the configuration options required to support
    vc4graphics

 conf/machine/include/rpi-base.inc              |  1 +
 conf/machine/include/rpi-default-providers.inc |  8 ++++----
 conf/machine/raspberrypi.conf                  |  2 ++
 conf/machine/raspberrypi0.conf                 |  2 ++
 conf/machine/raspberrypi2.conf                 |  2 ++
 conf/machine/raspberrypi3.conf                 |  2 ++
 recipes-bsp/bootfiles/rpi-config_git.bb        | 10 +++++++++-
 recipes-bsp/common/firmware.inc                |  4 ++--
 recipes-graphics/mesa/mesa_%.bbappend          |  4 ++++
 recipes-graphics/wayland/weston_%.bbappend     |  6 ++----
 recipes-graphics/weston/weston_%.bbappend      | 13 +++++++------
 recipes-kernel/linux/linux-raspberrypi_4.4.bb  |  4 ++--
 recipes-kernel/linux/linux-rpi.inc             | 10 ++++++++++
 13 files changed, 49 insertions(+), 19 deletions(-)
 create mode 100644 recipes-graphics/mesa/mesa_%.bbappend

--
2.7.4



------------------------------

Message: 5
Date: Fri, 20 May 2016 19:51:41 +0800
From: Herve Jourdain <herve.jourdain at neuf.fr>
To: yocto at yoctoproject.org
Subject: [yocto] [meta-raspberrypi][PATCH v2 01/13]
        rpi-default-providers.inc: change default providers to support
        vc4graphics
Message-ID: <1463745113-55142-2-git-send-email-herve.jourdain at neuf.fr>

Signed-off-by: Herve Jourdain <herve.jourdain at neuf.fr>
---
 conf/machine/include/rpi-default-providers.inc | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/conf/machine/include/rpi-default-providers.inc
b/conf/machine/include/rpi-default-providers.inc
index cabbd43..0bc8838 100644
--- a/conf/machine/include/rpi-default-providers.inc
+++ b/conf/machine/include/rpi-default-providers.inc
@@ -3,8 +3,8 @@
 PREFERRED_PROVIDER_virtual/kernel ?= "linux-raspberrypi"
 PREFERRED_PROVIDER_u-boot ?= "u-boot-rpi"
 PREFERRED_PROVIDER_virtual/xserver ?= "xserver-xorg"
-PREFERRED_PROVIDER_virtual/egl ?= "userland"
-PREFERRED_PROVIDER_virtual/libgles2 ?= "userland"
-PREFERRED_PROVIDER_virtual/libgl ?= "mesa-gl"
-PREFERRED_PROVIDER_virtual/mesa ?= "mesa-gl"
+PREFERRED_PROVIDER_virtual/egl ?=
"${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "mesa",
"userland", d)}"
+PREFERRED_PROVIDER_virtual/libgles2 ?=
"${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "mesa",
"userland", d)}"
+PREFERRED_PROVIDER_virtual/libgl ?=
"${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "mesa", "mesa-gl",
d)}"
+PREFERRED_PROVIDER_virtual/mesa ?=
"${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "mesa", "mesa-gl",
d)}"
 PREFERRED_PROVIDER_jpeg ?= "jpeg"
--
2.7.4



------------------------------

Message: 6
Date: Fri, 20 May 2016 19:51:42 +0800
From: Herve Jourdain <herve.jourdain at neuf.fr>
To: yocto at yoctoproject.org
Subject: [yocto] [meta-raspberrypi][PATCH v2 02/13] rpi-base.inc: add
        vc4-kms-v3d to the overlays to support vc4graphics
Message-ID: <1463745113-55142-3-git-send-email-herve.jourdain at neuf.fr>

Signed-off-by: Herve Jourdain <herve.jourdain at neuf.fr>
---
 conf/machine/include/rpi-base.inc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/conf/machine/include/rpi-base.inc
b/conf/machine/include/rpi-base.inc
index 2c9d8e0..23f8619 100644
--- a/conf/machine/include/rpi-base.inc
+++ b/conf/machine/include/rpi-base.inc
@@ -59,6 +59,7 @@ KERNEL_DEVICETREE_OVERLAYS_DTBO = " \
     overlays/w1-gpio.dtbo \
     overlays/w1-gpio-pullup.dtbo \
     overlays/pi3-miniuart-bt.dtbo \
+    overlays/vc4-kms-v3d.dtbo \
     "

 def cmpver_strings(ver1, ver2, truevalue, falsevalue):
--
2.7.4



------------------------------

--
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End of yocto Digest, Vol 68, Issue 81
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