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([2a01:e0a:106d:1080:8cb:a891:9d12:1873]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4891bba6276sm68877325e9.0.2026.04.21.00.42.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 21 Apr 2026 00:42:09 -0700 (PDT) Message-ID: <23d27bbc-3491-4baf-bf05-be5ef4619aa7@linaro.org> Date: Tue, 21 Apr 2026 09:42:08 +0200 Precedence: bulk X-Mailing-List: linux-arm-msm@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 2/7] media: qcom: iris: gen2: add support for 10bit decoding To: Dikshita Agarwal , Vikash Garodia , Abhinav Kumar , Bryan O'Donoghue , Mauro Carvalho Chehab Cc: 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-v1-2-428c1ec2e3f3@linaro.org> 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: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 4/21/26 07:24, Dikshita Agarwal wrote: > > > On 4/17/2026 1:33 PM, Neil Armstrong wrote: >> On 4/17/26 09:22, Dikshita Agarwal wrote: >>> >>> >>> On 4/8/2026 10:13 PM, Neil Armstrong wrote: >>>> Add the necessary plumbing into the HFi Gen2 to signal the decoder >>>> the right 10bit pixel format and stride when in compressed mode. >>>> >>>> Signed-off-by: Neil Armstrong >>>> --- >>>>   .../platform/qcom/iris/iris_hfi_gen2_command.c     | 71 >>>> +++++++++++++++++++++- >>>>   .../platform/qcom/iris/iris_hfi_gen2_defines.h     |  1 + >>>>   drivers/media/platform/qcom/iris/iris_utils.c      |  4 +- >>>>   3 files changed, 72 insertions(+), 4 deletions(-) >>>> >>>> diff --git a/drivers/media/platform/qcom/iris/iris_hfi_gen2_command.c >>>> b/drivers/media/platform/qcom/iris/iris_hfi_gen2_command.c >>>> index 30bfd90d423b..8e547e390fa3 100644 >>>> --- a/drivers/media/platform/qcom/iris/iris_hfi_gen2_command.c >>>> +++ b/drivers/media/platform/qcom/iris/iris_hfi_gen2_command.c >>>> @@ -481,8 +481,20 @@ static int iris_hfi_gen2_set_colorformat(struct >>>> iris_inst *inst, u32 plane) >>>>         if (inst->domain == DECODER) { >>>>           pixelformat = inst->fmt_dst->fmt.pix_mp.pixelformat; >>>> -        hfi_colorformat = pixelformat == V4L2_PIX_FMT_NV12 ? >>>> -            HFI_COLOR_FMT_NV12 : HFI_COLOR_FMT_NV12_UBWC; >>>> +        switch (pixelformat) { >>>> +        case V4L2_PIX_FMT_NV12: >>>> +            hfi_colorformat = HFI_COLOR_FMT_NV12; >>>> +            break; >>>> +        case V4L2_PIX_FMT_QC08C: >>>> +            hfi_colorformat = HFI_COLOR_FMT_NV12_UBWC; >>>> +            break; >>>> +        case V4L2_PIX_FMT_P010: >>>> +            hfi_colorformat = HFI_COLOR_FMT_P010; >>>> +            break; >>>> +        case V4L2_PIX_FMT_QC10C: >>>> +            hfi_colorformat = HFI_COLOR_FMT_TP10_UBWC; >>>> +            break; >>>> +        }; >>>>       } else { >>>>           pixelformat = inst->fmt_src->fmt.pix_mp.pixelformat; >>>>           hfi_colorformat = pixelformat == V4L2_PIX_FMT_NV12 ? >>>> @@ -517,7 +529,8 @@ static int >>>> iris_hfi_gen2_set_linear_stride_scanline(struct iris_inst *inst, u32 >>>>       stride_uv = stride_y; >>>>       scanline_uv = scanline_y / 2; >>>>   -    if (pixelformat != V4L2_PIX_FMT_NV12) >>>> +    if (pixelformat != V4L2_PIX_FMT_NV12 && >>>> +        pixelformat != V4L2_PIX_FMT_P010) >>>>           return 0; >>>>         payload[0] = stride_y << 16 | scanline_y; >>>> @@ -532,6 +545,57 @@ static int >>>> iris_hfi_gen2_set_linear_stride_scanline(struct iris_inst *inst, u32 >>>>                             sizeof(u64)); >>>>   } >>>>   +static int iris_hfi_gen2_set_ubwc_stride_scanline(struct iris_inst >>>> *inst, u32 plane) >>>> +{ >>>> +    u32 meta_stride_y, meta_scanline_y, meta_stride_uv, meta_scanline_uv; >>>> +    u32 stride_y, scanline_y, stride_uv, scanline_uv; >>>> +    u32 port = iris_hfi_gen2_get_port(inst, plane); >>>> +    u32 pixelformat, width, height; >>>> +    u32 payload[4]; >>>> + >>>> +    pixelformat = inst->fmt_dst->fmt.pix_mp.pixelformat; >>>> +    width = inst->fmt_dst->fmt.pix_mp.width; >>>> +    height = inst->fmt_dst->fmt.pix_mp.height; >>> >>> This HFI is only applicable to AV1, you might see some corruption due to >>> this. Please check. >> >> This is what I saw looking at donwstream, but I had not implemented this >> initially >> but I got some corruption with some different width/height, which was >> solved adding >> this command. > > Even with your implementation, this API would only ever be triggered for > QC08C and QC10C formats, which I don’t believe are currently being tested > with your series. Since HFI defines this as AV1D‑specific, invoking it for > other codecs is unlikely to help and would be incorrect. > > Pls re-check. I actually did test QC08C and QC10C with dma-buf drm import, and it works fine with this API. Neil > > Thanks, > Dikshita >> I guess this in-firmware calculations are not exactly the same the DRM >> driver expects. >> >> Honestly I think it's preferable to sync the stride/scanlines calculations >> between the >> driver and the firmware. >> For example I used the same "ALIGN(width, 192)" for the v2 iris patchset >> which was wrong >> because ALIGN only works on Power Of Two number but it still worked because >> this HFI >> HFI_PROP_UBWC_STRIDE_SCANLINE command was called with the wrong aligned width. >> >> Neil >> >>> >>> Thanks, >>> Dikshita >>