[yocto] [meta-raspberrypi][PATCH 1/3] udev: Create rules file to generate serial0/1

[Khem Raj]

On Wed, Apr 19, 2017 at 3:41 AM, Andrei Gherzan <andrei at gherzan.ro> wrote:
> On Tue, Apr 18, 2017 at 7:55 PM, Khem Raj <raj.khem at gmail.com> wrote:
>> On Tue, Apr 18, 2017 at 11:13 AM, Andrei Gherzan <andrei at gherzan.ro> wrote:
>>> Signed-off-by: Andrei Gherzan <andrei at gherzan.ro>
>>> ---
>>>  recipes-core/udev/udev-rules-rpi.bb           | 12 ++++++++++++
>>>  recipes-core/udev/udev-rules-rpi/99-com.rules | 21
>>
>> perhaps a bbappend to udev-extraconf recipe is better ?
>>
>> +++++++++++++++++++++
>>>  2 files changed, 33 insertions(+)
>>>  create mode 100644 recipes-core/udev/udev-rules-rpi.bb
>>>  create mode 100644 recipes-core/udev/udev-rules-rpi/99-com.rules
>>>
>>> diff --git a/recipes-core/udev/udev-rules-rpi.bb b/recipes-core/udev/udev-rules-rpi.bb
>>> new file mode 100644
>>> index 0000000..20443d3
>>> --- /dev/null
>>> +++ b/recipes-core/udev/udev-rules-rpi.bb
>>> @@ -0,0 +1,12 @@
>>> +DESCRIPTION = "udev rules for Raspberry Pi Boards"
>>> +LICENSE = "MIT"
>>> +LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
>>> +
>>> +SRC_URI = " file://99-com.rules"
>>> +
>>> +S = "${WORKDIR}"
>>> +
>>> +do_install () {
>>> +    install -d ${D}${sysconfdir}/udev/rules.d
>>> +    install -m 0644 ${WORKDIR}/99-com.rules ${D}${sysconfdir}/udev/rules.d/
>>> +}
>>> diff --git a/recipes-core/udev/udev-rules-rpi/99-com.rules b/recipes-core/udev/udev-rules-rpi/99-com.rules
>>> new file mode 100644
>>> index 0000000..6bf019b
>>> --- /dev/null
>>> +++ b/recipes-core/udev/udev-rules-rpi/99-com.rules
>>> @@ -0,0 +1,21 @@
>>> +KERNEL=="ttyAMA[01]", PROGRAM="/bin/sh -c '\
>>> +       ALIASES=/proc/device-tree/aliases; \
>>> +       if cmp -s $ALIASES/uart0 $ALIASES/serial0; then \
>>> +               echo 0;\
>>> +       elif cmp -s $ALIASES/uart0 $ALIASES/serial1; then \
>>> +               echo 1; \
>>> +       else \
>>> +               exit 1; \
>>> +       fi\
>>> +'", SYMLINK+="serial%c"
>>> +
>>> +KERNEL=="ttyS0", PROGRAM="/bin/sh -c '\
>>> +       ALIASES=/proc/device-tree/aliases; \
>>> +       if cmp -s $ALIASES/uart1 $ALIASES/serial0; then \
>>> +               echo 0; \
>>> +       elif cmp -s $ALIASES/uart1 $ALIASES/serial1; then \
>>> +               echo 1; \
>>> +       else \
>>> +               exit 1; \
>>> +       fi \
>>> +'", SYMLINK+="serial%c"
>>> --
>>> 2.12.2
>>>
>
> I was thinking about that but extraconf brings additional
> functionality (ex automount) that might not be of interest. I
> personally don't want that. What do you think?
>

yeah that seems fine on second thought, since its quite pi specific
rule

> --
> Andrei Gherzan