Re: [PATCH RFC 1/7] media: qcom: iris: add QC10C & P010 buffer size calculations

[Neil Armstrong <neil.armstrong@linaro.org>]

On 4/9/26 01:59, Dmitry Baryshkov wrote:
> On Wed, Apr 08, 2026 at 06:43:54PM +0200, Neil Armstrong wrote:
>> The P010 (YUV format with 16-bits per pixel with interleaved UV)
> 
> 10-bit, but with 16-bit alignment

Ack

> 
>> and QC10C (P010 compressed mode similar to QC08C) requires specific
>> buffer calculations to allocate the right buffer size for DPB frames
>> and frames consumed by userspace.
>>
>> Similar to 8bit, the 10bit DPB frames uses QC10C format.
>>
>> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
>> ---
>>   drivers/media/platform/qcom/iris/iris_buffer.c | 81 +++++++++++++++++++++++++-
>>   1 file changed, 80 insertions(+), 1 deletion(-)
> 
>> @@ -204,6 +226,55 @@ static u32 iris_yuv_buffer_size_qc08c(struct iris_inst *inst)
>>   	return ALIGN(y_meta_plane + y_plane + uv_meta_plane + uv_plane, PIXELS_4K);
>>   }
>>   
>> +/*
>> + * QC10C:
>> + * Compressed Macro-tile format for TP10.
> 
> UBWC-compressed format

I literally took the head comment of the QC08C buffer size function and replaced 8 by 10...

> 
>> + */
>