[PATCH] drivers: video: hdmi: log ext colorimetry applicability

[Johan Korsnes (jkorsnes)]

On 03/10/2019 15.44, Ville Syrjälä wrote:
> On Thu, Oct 03, 2019 at 09:15:49AM +0200, Johan Korsnes wrote:
>> When logging the AVI InfoFrame, clearly indicate whether or not the
>> extended colorimetry attribute is active. This is only the case when
>> the AVI InfoFrame colorimetry attribute is set to extended. [0]
>>
>> [0] CTA-861-G section 6.4 page 57
>>
>> Signed-off-by: Johan Korsnes <jkorsnes at cisco.com>
>> ---
>>  drivers/video/hdmi.c | 8 +++++++-
>>  1 file changed, 7 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c
>> index f29db728ff29..a709e38a53ca 100644
>> --- a/drivers/video/hdmi.c
>> +++ b/drivers/video/hdmi.c
>> @@ -682,8 +682,14 @@ static void hdmi_avi_infoframe_log(const char *level,
>>  	hdmi_log("    active aspect: %s\n",
>>  			hdmi_active_aspect_get_name(frame->active_aspect));
>>  	hdmi_log("    itc: %s\n", frame->itc ? "IT Content" : "No Data");
>> -	hdmi_log("    extended colorimetry: %s\n",
>> +
>> +	if (frame->colorimetry == HDMI_COLORIMETRY_EXTENDED)
>> +		hdmi_log("    extended colorimetry: %s\n",
>>  			hdmi_extended_colorimetry_get_name(frame->extended_colorimetry));
>> +	else
>> +		hdmi_log("    extended colorimetry: N/A (0x%x)\n",
>> +			frame->extended_colorimetry);
> 
> Yeah, seems fine. Might make the logs a bit less confusing at least.
> 
> Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> PS. would be nice it someone were to extend this code to deal with the
> ACE bits too. Do you have plans/interest in doing that?

I was actually going to deal with the ACE bits as part of this patch,
but noticed that things seem to be hard coded for AVI InfoFrame v2:

int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame) {
    memset(frame, 0, sizeof(*frame));
 
    frame->type = HDMI_INFOFRAME_TYPE_AVI;
    frame->version = 2;
    frame->length = HDMI_AVI_INFOFRAME_SIZE;

    return 0;
}

I have no plans to fix this, for now, unfortunately.

> 
>> +
>>  	hdmi_log("    quantization range: %s\n",
>>  			hdmi_quantization_range_get_name(frame->quantization_range));
>>  	hdmi_log("    nups: %s\n", hdmi_nups_get_name(frame->nups));
>> -- 
>> 2.20.1
>>
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>