Re: [PATCH i-g-t 1/4] tools/intel_vbt_decode: sync intel_vbt_defs.h with commit 1b85a9b04681

["Nautiyal, Ankit K" <ankit.k.nautiyal@intel.com>]

On 4/18/2026 12:41 AM, Ville Syrjälä wrote:
> On Fri, Apr 17, 2026 at 02:54:32PM +0300, Jani Nikula wrote:
>> On Fri, 17 Apr 2026, Ville Syrjälä <ville.syrjala@linux.intel.com> wrote:
>>> On Fri, Apr 17, 2026 at 11:47:14AM +0530, Nautiyal, Ankit K wrote:
>>>> On 4/17/2026 11:09 AM, Karthik B S wrote:
>>>>> Hi Ankit,
>>>>>
>>>>> On 4/17/2026 9:40 AM, Ankit Nautiyal wrote:
>>>>>> Synchronize intel_vbt_defs.h with kernel commit:
>>>>>> 1b85a9b04681 ("drm/i915/vbt: Add edp pipe joiner enable/disable bits")
>>>>>>
>>>>>> Bspec:20142
>>>>>> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
>>>>>> Reviewed-by: Kamil Konieczny <kamil.konieczny@linux.intel.com>
>>>>>> ---
>>>>>>    tools/intel_vbt_defs.h | 1 +
>>>>>>    1 file changed, 1 insertion(+)
>>>>>>
>>>>>> diff --git a/tools/intel_vbt_defs.h b/tools/intel_vbt_defs.h
>>>>>> index 6612d3a4ec49..550a9bfba868 100644
>>>>>> --- a/tools/intel_vbt_defs.h
>>>>>> +++ b/tools/intel_vbt_defs.h
>>>>>> @@ -1090,6 +1090,7 @@ struct bdb_edp {
>>>>>>        u16 edp_dsc_disable;                    /* 251+ */
>>>>>>        u16 t6_delay_support;                    /* 260+ */
>>>>>>        u16 link_idle_time[16];                    /* 260+ */
>>>>>> +    u16 joiner_enable;                    /* 261+ */
>>>>> The variable name should be 'pipe_joiner_enable'. With this updated,
>>>>>
>>>>> Reviewed-by: Karthik B S <karthik.b.s@intel.com>
>>>>
>>>> Thanks Karthik, will fix this and send shortly.
>>> How was this even different? You didn't retype these by hand into the
>>> igt copy of the header did you?


Ohh yes I did type these by hand. I should have realized this after the 
3rd revision.



>>> The proper procedure is to actually
>>> copy the whole file from the kernel tree.


Noted. Will copy the whole file.


Regards,

Ankit


>> Yeah, this. The commits aren't in the same order as in the kernel
>> either, and they're missing one.
>>
>> I've scripted this years ago, for both PCI IDs and VBT defs, and I've
>> shared the scripts too. Here's my current version.
>>
>> Change KERNEL and IGT paths to yours, update the repos, cd to IGT, and
>> run.
>>
>> BR,
>> Jani.
>>
>>
>> #!/bin/bash
>>
>> SINCE=962601ac4c78
>> KERNEL=$HOME/src/linux
>> IGT=$HOME/src/intel-gpu-tools
>>
>> declare -g -A map
>> map["drivers/gpu/drm/i915/display/intel_vbt_defs.h"]="tools/intel_vbt_defs.h"
>> map["drivers/gpu/drm/i915/display/intel_dsi_vbt_defs.h"]="tools/intel_dsi_vbt_defs.h"
>> map["include/drm/intel/pciids.h"]="lib/pciids.h"
>>
>> cd $KERNEL
>>
>> for infile in "${!map[@]}"; do
>> 	outfile=${map[$infile]}
>>
>> 	echo "processing $infile -> $outfile"
>>
>> 	last=
>> 	for commit in $(git log --reverse --pretty=%h $SINCE..HEAD -- $infile); do
>> 		if ! git cat-file -e $commit:$infile 2>/dev/null; then
>> 			continue
>> 		fi
>> 		if git show $commit:$infile | diff -q $IGT/$outfile - >/dev/null; then
>> 			last=$commit
>> 			break
>> 		fi
>> 	done
>>
>> 	if [[ -z "$last" ]]; then
>> 		echo "last update to $infile not found"
>> 		continue
>> 	fi
>>
>> 	for commit in $(git log --reverse --pretty=%h $last..HEAD -- $infile); do
>> 		prefix="${outfile%.*}"
>> 		base="$(basename $outfile)"
>> 		ref=$(git cite $commit)
>> 		git show $commit:$infile > $IGT/$outfile
>> 		cd $IGT
>> 		git commit -as \
>> 		    -m "${prefix}: sync ${base} with kernel commit $commit" \
>> 		    -m "Synchronize ${base} with kernel commit:" \
>> 		    -m "$ref"
>> 		cd -
>> 	done
>> done
> Good enough to put this into scripts/ with a quick howto at the top?
> And then reference it from the generated commit messages so that the
> next person is more likely to find it as well.
>