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2019 15:07:24 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED4: 1 X-ANTISPAM-LEVEL: 2 X-SKE-CHECKED: 1 X-ABS-CHECKED: 1 Received: from [172.16.10.69] (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P30556T139942227334912S1570777641787203_; Fri, 11 Oct 2019 15:07:22 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: X-RL-SENDER: hjc@rock-chips.com X-SENDER: hjc@rock-chips.com X-LOGIN-NAME: hjc@rock-chips.com X-FST-TO: nd@arm.com X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 Subject: Re: [PATCH v2 1/3] drm: Add some new format DRM_FORMAT_NVXX_10 To: "james qian wang (Arm Technology China)" Cc: =?UTF-8?B?VmlsbGUgU3lyasOkbMOk?= , Maxime Ripard , "linux-kernel@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , David Airlie , Sean Paul , nd References: <1569486289-152061-1-git-send-email-hjc@rock-chips.com> <1569486289-152061-2-git-send-email-hjc@rock-chips.com> <20190930104849.GA1208@intel.com> <2c46d532-f810-392d-b9c0-3b9aaccae7f4@rock-chips.com> <20191008113338.GP1208@intel.com> <20191011064433.GA18503@jamwan02-TSP300> From: "sandy.huang" Message-ID: <5c932cb6-fdfb-88db-3757-4c1b602d4778@rock-chips.com> Date: Fri, 11 Oct 2019 15:07:22 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20191011064433.GA18503@jamwan02-TSP300> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 在 2019/10/11 下午2:44, james qian wang (Arm Technology China) 写道: > On Fri, Oct 11, 2019 at 11:35:53AM +0800, sandy.huang wrote: >> Hi james.qian.wang, >> >>     Thank for you remind, fou some unknow reason, i miss the the mail from >> you:(, i get this message from https://patchwork.kernel.org/patch/11161937/ >> >> sorry about that. >> >>     About the format block describe, I also found some unreasonable,  this >> format need 2 line aligned, so the block_h need to sed as 2, and the >> char_per_block need set as w * h * 10 for y plane, and w * h * 2 * 10 for uv >> plane, so the following describe maybe more correct, thanks. >> >>         { .format = DRM_FORMAT_NV12_10,        .depth = 0, .num_planes = 2, >>           .char_per_block = { 10, 10, 0 }, .block_w = { 4, 2, 0 }, .block_h >> = { 2, 2, 0 }, >>           .hsub = 2, .vsub = 2, .is_yuv = true}, > Hi Sandy: > I think for such NV12 YUV-422 (hsub = 2, vsub = 2) 2x2 subsampled format > the block size can be: > > the Y plane: 2x2; > The UV plane: 1x2; (H direction sample 1 Cb and 1Cr, V direction 2 lines got 2) > > Then: > > .char_per_block = {5, 5, 0} block_w = {2, 1, 0}. block_h = {2, 2, 0}; > > Thanks > James Hi James, If the block_w is 2 pixel, one line size at block is 2*10 bit %8 != 0,  although we use block to describe this format, but actually the data is still stored one line by one line, still need 4 pixel aligned. so i think here need use 4pixel*2line for per block, Thanks, sandy.huang. > >>           .hsub = 2, .vsub = 2, .is_yuv = true}, >>         { .format = DRM_FORMAT_NV21_10,        .depth = 0, .num_planes = 2, >>           .char_per_block = { 10, 10, 0 }, .block_w = { 4, 2, 0 }, .block_h >> = { 2, 2, 0 }, >>           .hsub = 2, .vsub = 2, .is_yuv = true}, >>         { .format = DRM_FORMAT_NV16_10,        .depth = 0, .num_planes = 2, >>           .char_per_block = { 10, 10, 0 }, .block_w = { 4, 2, 0 }, .block_h >> = { 2, 2, 0 }, >>           .hsub = 2, .vsub = 1, .is_yuv = true}, >>         { .format = DRM_FORMAT_NV61_10,        .depth = 0, .num_planes = 2, >>           .char_per_block = { 10, 10, 0 }, .block_w = { 4, 2, 0 }, .block_h >> = { 2, 2, 0 }, >>           .hsub = 2, .vsub = 1, .is_yuv = true}, >>         { .format = DRM_FORMAT_NV24_10,        .depth = 0, .num_planes = 2, >>           .char_per_block = { 10, 10, 0 }, .block_w = { 4, 2, 0 }, .block_h >> = { 2, 2, 0 }, >>           .hsub = 1, .vsub = 1, .is_yuv = true}, >>         { .format = DRM_FORMAT_NV42_10,        .depth = 0, .num_planes = 2, >>           .char_per_block = { 10, 10, 0 }, .block_w = { 4, 2, 0 }, .block_h >> = { 2, 2, 0 }, >>           .hsub = 1, .vsub = 1, .is_yuv = true}, >> >> >>>>           { .format = DRM_FORMAT_P016,        .depth = 0,  .num_planes = >> 2, >>>>             .char_per_block = { 2, 4, 0 }, .block_w = { 1, 0, 0 }, >> .block_h = { 1, 0, 0 }, >>>>             .hsub = 2, .vsub = 2, .is_yuv = true}, >>>> +        { .format = DRM_FORMAT_NV12_10,        .depth = 0,  .num_planes >> = 2, >>>> +          .char_per_block = { 5, 10, 0 }, .block_w = { 4, 4, 0 }, >> .block_h = { 4, 4, 0 }, >> >>> Hi Sandy: >>> Their is a problem here for char_per_block size of plane[0]: >>> Since: 5 * 8 != 4 * 4 * 10; >>> Seems you mis-set the block_w/h, per your block size the block is 2x2, and >> it should be: >>>   .char_per_block = { 5, 10, 0 }, .block_w = { 2, 2, 0 }, .block_h = { 2, >> 2, 0 }, >> >>> Best Regards: >>> James >> >> >> >> >> >> 在 2019/10/8 下午7:49, sandy.huang 写道: >>> 在 2019/10/8 下午7:33, Ville Syrjälä 写道: >>>> On Tue, Oct 08, 2019 at 10:40:20AM +0800, sandy.huang wrote: >>>>> Hi ville syrjala, >>>>> >>>>> 在 2019/9/30 下午6:48, Ville Syrjälä 写道: >>>>>> On Thu, Sep 26, 2019 at 04:24:47PM +0800, Sandy Huang wrote: >>>>>>> These new format is supported by some rockchip socs: >>>>>>> >>>>>>> DRM_FORMAT_NV12_10/DRM_FORMAT_NV21_10 >>>>>>> DRM_FORMAT_NV16_10/DRM_FORMAT_NV61_10 >>>>>>> DRM_FORMAT_NV24_10/DRM_FORMAT_NV42_10 >>>>>>> >>>>>>> Signed-off-by: Sandy Huang >>>>>>> --- >>>>>>>    drivers/gpu/drm/drm_fourcc.c  | 18 ++++++++++++++++++ >>>>>>>    include/uapi/drm/drm_fourcc.h | 14 ++++++++++++++ >>>>>>>    2 files changed, 32 insertions(+) >>>>>>> >>>>>>> diff --git a/drivers/gpu/drm/drm_fourcc.c >>>>>>> b/drivers/gpu/drm/drm_fourcc.c >>>>>>> index c630064..ccd78a3 100644 >>>>>>> --- a/drivers/gpu/drm/drm_fourcc.c >>>>>>> +++ b/drivers/gpu/drm/drm_fourcc.c >>>>>>> @@ -261,6 +261,24 @@ const struct drm_format_info >>>>>>> *__drm_format_info(u32 format) >>>>>>>            { .format = DRM_FORMAT_P016,        .depth = >>>>>>> 0,  .num_planes = 2, >>>>>>>              .char_per_block = { 2, 4, 0 }, .block_w = { >>>>>>> 1, 0, 0 }, .block_h = { 1, 0, 0 }, >>>>>>>              .hsub = 2, .vsub = 2, .is_yuv = true}, >>>>>>> +        { .format = DRM_FORMAT_NV12_10,        .depth = >>>>>>> 0,  .num_planes = 2, >>>>>>> +          .char_per_block = { 5, 10, 0 }, .block_w = { >>>>>>> 4, 4, 0 }, .block_h = { 4, 4, 0 }, >>>>>>> +          .hsub = 2, .vsub = 2, .is_yuv = true}, >>>>>>> +        { .format = DRM_FORMAT_NV21_10,        .depth = >>>>>>> 0,  .num_planes = 2, >>>>>>> +          .char_per_block = { 5, 10, 0 }, .block_w = { >>>>>>> 4, 4, 0 }, .block_h = { 4, 4, 0 }, >>>>>>> +          .hsub = 2, .vsub = 2, .is_yuv = true}, >>>>>>> +        { .format = DRM_FORMAT_NV16_10,        .depth = >>>>>>> 0,  .num_planes = 2, >>>>>>> +          .char_per_block = { 5, 10, 0 }, .block_w = { >>>>>>> 4, 4, 0 }, .block_h = { 4, 4, 0 }, >>>>>>> +          .hsub = 2, .vsub = 1, .is_yuv = true}, >>>>>>> +        { .format = DRM_FORMAT_NV61_10,        .depth = >>>>>>> 0,  .num_planes = 2, >>>>>>> +          .char_per_block = { 5, 10, 0 }, .block_w = { >>>>>>> 4, 4, 0 }, .block_h = { 4, 4, 0 }, >>>>>>> +          .hsub = 2, .vsub = 1, .is_yuv = true}, >>>>>>> +        { .format = DRM_FORMAT_NV24_10,        .depth = >>>>>>> 0,  .num_planes = 2, >>>>>>> +          .char_per_block = { 5, 10, 0 }, .block_w = { >>>>>>> 4, 4, 0 }, .block_h = { 4, 4, 0 }, >>>>>>> +          .hsub = 1, .vsub = 1, .is_yuv = true}, >>>>>>> +        { .format = DRM_FORMAT_NV42_10,        .depth = >>>>>>> 0,  .num_planes = 2, >>>>>>> +          .char_per_block = { 5, 10, 0 }, .block_w = { >>>>>>> 4, 4, 0 }, .block_h = { 4, 4, 0 }, >>>>>>> +          .hsub = 1, .vsub = 1, .is_yuv = true}, >>>>>>>            { .format = DRM_FORMAT_P210,        .depth = 0, >>>>>>>              .num_planes = 2, .char_per_block = { 2, 4, 0 }, >>>>>>>              .block_w = { 1, 0, 0 }, .block_h = { 1, 0, >>>>>>> 0 }, .hsub = 2, >>>>>>> diff --git a/include/uapi/drm/drm_fourcc.h >>>>>>> b/include/uapi/drm/drm_fourcc.h >>>>>>> index 3feeaa3..08e2221 100644 >>>>>>> --- a/include/uapi/drm/drm_fourcc.h >>>>>>> +++ b/include/uapi/drm/drm_fourcc.h >>>>>>> @@ -238,6 +238,20 @@ extern "C" { >>>>>>>    #define DRM_FORMAT_NV42        fourcc_code('N', 'V', >>>>>>> '4', '2') /* non-subsampled Cb:Cr plane */ >>>>>>>       /* >>>>>>> + * 2 plane YCbCr >>>>>>> + * index 0 = Y plane, Y3:Y2:Y1:Y0 10:10:10:10 >>>>>>> + * index 1 = Cb:Cr plane, >>>>>>> Cb3:Cr3:Cb2:Cr2:Cb1:Cr1:Cb0:Cr0 10:10:10:10:10:10:10:10 >>>>>>> + * or >>>>>>> + * index 1 = Cr:Cb plane, >>>>>>> Cr3:Cb3:Cr2:Cb2:Cr1:Cb1:Cr0:Cb0 10:10:10:10:10:10:10:10 >>>>>> So now you're defining it as some kind of byte aligned block. >>>>>> With that specifying endianness would now make sense since >>>>>> otherwise this tells us absolutely nothing about the memory >>>>>> layout. >>>>>> >>>>>> So I'd either do that, or go back to not specifying anything and >>>>>> use some weasel words like "mamory layout is implementation defined" >>>>>> which of course means no one can use it for anything that involves >>>>>> any kind of cross vendor stuff. >>>>> /* >>>>>    * 2 plane YCbCr >>>>>    * index 0 = Y plane, [39: 0] Y3:Y2:Y1:Y0 10:10:10:10 little endian >>>>>    * index 1 = Cb:Cr plane, [79: 0] Cb3:Cr3:Cb2:Cr2:Cb1:Cr1:Cb0:Cr0 >>>>> 10:10:10:10:10:10:10:10  little endian >>>>>    * or >>>>>    * index 1 = Cr:Cb plane, [79: 0] Cr3:Cb3:Cr2:Cb2:Cr1:Cb1:Cr0:Cb0 >>>>> 10:10:10:10:10:10:10:10  little endian >>>>>    */ >>>>> >>>>> Is this description ok? >>>> Seems OK to me, if it actually describes the format correctly. >>>> >>>> Though I'm not sure why the CbCr is defines as an 80bit block >>>> and Y has a 40bit block. 40bits should be enough for CbCr as well. >>>> >>> well, this is taken into account yuv444,  4 y point corresponding with 4 >>> uv point. >>> >>> if only describes the layout memory, here can change to 40bit block. >>> >>> thanks. >>> >>>>>>> + */ >>>>>>> +#define DRM_FORMAT_NV12_10    fourcc_code('N', 'A', >>>>>>> '1', '2') /* 2x2 subsampled Cr:Cb plane */ >>>>>>> +#define DRM_FORMAT_NV21_10    fourcc_code('N', 'A', >>>>>>> '2', '1') /* 2x2 subsampled Cb:Cr plane */ >>>>>>> +#define DRM_FORMAT_NV16_10    fourcc_code('N', 'A', >>>>>>> '1', '6') /* 2x1 subsampled Cr:Cb plane */ >>>>>>> +#define DRM_FORMAT_NV61_10    fourcc_code('N', 'A', >>>>>>> '6', '1') /* 2x1 subsampled Cb:Cr plane */ >>>>>>> +#define DRM_FORMAT_NV24_10    fourcc_code('N', 'A', >>>>>>> '2', '4') /* non-subsampled Cr:Cb plane */ >>>>>>> +#define DRM_FORMAT_NV42_10    fourcc_code('N', 'A', >>>>>>> '4', '2') /* non-subsampled Cb:Cr plane */ >>>>>>> + >>>>>>> +/* >>>>>>>     * 2 plane YCbCr MSB aligned >>>>>>>     * index 0 = Y plane, [15:0] Y:x [10:6] little endian >>>>>>>     * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x >>>>>>> [10:6:10:6] little endian >>>>>>> -- >>>>>>> 2.7.4 >>>>>>> >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> dri-devel mailing list >>>>>>> dri-devel@lists.freedesktop.org >>>>>>> https://lists.freedesktop.org/mailman/listinfo/dri-devel >>> >>> _______________________________________________ >>> dri-devel mailing list >>> dri-devel@lists.freedesktop.org >>> https://lists.freedesktop.org/mailman/listinfo/dri-devel