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([2a01:e0a:106d:1080:70d5:8219:5bd4:e213]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43d1e1fe0b0sm66705933f8f.0.2026.04.09.00.25.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 09 Apr 2026 00:25:05 -0700 (PDT) Message-ID: Date: Thu, 9 Apr 2026 09:25:04 +0200 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Neil Armstrong Reply-To: Neil Armstrong Subject: Re: [PATCH RFC 1/7] media: qcom: iris: add QC10C & P010 buffer size calculations To: Dmitry Baryshkov Cc: Vikash Garodia , Dikshita Agarwal , Abhinav Kumar , Bryan O'Donoghue , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260408-topic-sm8x50-iris-10bit-decoding-v1-0-428c1ec2e3f3@linaro.org> <20260408-topic-sm8x50-iris-10bit-decoding-v1-1-428c1ec2e3f3@linaro.org> <753kndrdrq6j67c3l7uvwrsj2ino7vb2chmvfwzmppo42kcd4h@x5wcdhdpzje2> Content-Language: en-US, fr Autocrypt: addr=neil.armstrong@linaro.org; keydata= xsBNBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAHNKk5laWwgQXJtc3Ryb25nIDxuZWlsLmFybXN0cm9uZ0BsaW5hcm8ub3JnPsLAkQQTAQoA OwIbIwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBInsPQWERiF0UPIoSBaat7Gkz/iuBQJk Q5wSAhkBAAoJEBaat7Gkz/iuyhMIANiD94qDtUTJRfEW6GwXmtKWwl/mvqQtaTtZID2dos04 YqBbshiJbejgVJjy+HODcNUIKBB3PSLaln4ltdsV73SBcwUNdzebfKspAQunCM22Mn6FBIxQ GizsMLcP/0FX4en9NaKGfK6ZdKK6kN1GR9YffMJd2P08EO8mHowmSRe/ExAODhAs9W7XXExw UNCY4pVJyRPpEhv373vvff60bHxc1k/FF9WaPscMt7hlkbFLUs85kHtQAmr8pV5Hy9ezsSRa GzJmiVclkPc2BY592IGBXRDQ38urXeM4nfhhvqA50b/nAEXc6FzqgXqDkEIwR66/Gbp0t3+r yQzpKRyQif3OwE0ETVkGzwEIALyKDN/OGURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYp QTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXMcoJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+ SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hiSvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY 4yG6xI99NIPEVE9lNBXBKIlewIyVlkOaYvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoM Mtsyw18YoX9BqMFInxqYQQ3j/HpVgTSvmo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUX oUk33HEAEQEAAcLAXwQYAQIACQUCTVkGzwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfn M7IbRuiSZS1unlySUVYu3SD6YBYnNi3G5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa3 3eDIHu/zr1HMKErm+2SD6PO9umRef8V82o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCS KmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy 4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJC3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTT QbM0WUIBIcGmq38+OgUsMYu4NzLu7uZFAcmp6h8g Organization: Linaro In-Reply-To: <753kndrdrq6j67c3l7uvwrsj2ino7vb2chmvfwzmppo42kcd4h@x5wcdhdpzje2> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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 >> --- >> 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... > >> + */ >