Re: [PATCH v5 00/10] Add support for DMA2D of STMicroelectronics STM32 Soc series

From: Nicolas Dufresne
Date: Mon Oct 25 2021 - 16:13:11 EST

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Le lundi 18 octobre 2021 à 13:04 +0800, dillon.minfei@xxxxxxxxx a écrit :
> From: Dillon Min <dillon.minfei@xxxxxxxxx>
>
> This patchset introduces a basic support for DMA2D Interface
> of STMicroelectronics STM32 SoC series.
>
> This first basic support implements R2M, M2M, M2M_PFC
> M2M_BLEND support will be added later on.
>
> This has been tested on STM32469-DISCO board.
>
> history
> v5:
> - rebase to media_tree https://git.linuxtv.org/media_tree.git/
> - remove unused log from dma2d driver to avoid spam kernel log.
> - fix 0xFFFFFF to 0xffffff, 2^24 to 2^24 -1, etc.
> - introduce patch "media: v4l2-ctrls: Add V4L2_CID_COLORFX_CBCR max setting"
> to add V4L2_CID_COLORFX_CBCR entry.
> - thanks to Hans's patch, open nullptr check in v4l2-compliance, update new
> test result. thanks.
> https://lore.kernel.org/linux-media/3acd9ee4-5a58-6ed4-17fe-61596a5252b8@xxxxxxxxx/
>
> v4 link:
> https://lore.kernel.org/lkml/bc8e1cd1-0013-9062-88b6-fddca535919f@xxxxxxxxx/
>
> v4:
> - replace V4L2_COLORFX_SET_ARGB, V4L2_CID_COLORFX_ARGB to
> V4L2_COLORFX_SET_RGB, V4L2_CID_COLORFX_RGB since Alpha paramter not used
> in current. thanks Hans.
> v3 link:
> https://lore.kernel.org/lkml/1633689012-14492-1-git-send-email-dillon.minfei@xxxxxxxxx/
>
> v3:
> - use V4L2_COLORFX_SET_ARGB, V4L2_CID_COLORFX_ARGB to pass argb paramter to
> the dma2d driver, instead of add stm32 private ioctl.
> - some v2's patch are removed in this version.
> - "[PATCH v2 7/9] media: docs: add doc for the stm32 dma2d driver"
> - "[PATCH v2 8/9] media: v4l: uapi: Add user control base for stm32 dma2d
> controls"
> - dma2d's driver changes based on Hans's review result. detail can be found at
> "media: stm32-dma2d: STM32 DMA2D driver"
> - add stm32 clk drivers bugfix, ltdc clock disabled after kenerl boot up.
> v3 based on kernel and v4l-utils git:
>
> kernel:
> commit 9e1ff307c779ce1f0f810c7ecce3d95bbae40896
> Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> Date: Sun Oct 3 14:08:47 2021 -0700
>
> Linux 5.15-rc4
>
> v4l-utils:
> commit 700f5ded9c6de2c6dfe5d1b453d85566f95b4f0c
> Author: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
> Date: Sat Oct 2 11:01:05 2021 +0200
>
> test-media: show version info earlier and show cmd args
>
> Log the version info earlier and also log the command line arguments.
>
> Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
>
> v2 link:
> https://lore.kernel.org/lkml/1626341068-20253-11-git-send-email-dillon.minfei@xxxxxxxxx/
>
>
> v2:
> - update v4l2-compliance to SHA: a4f2e3a6f306 2021-07-13 08:04:15
> the test results at below [1].
> - introduce Documentation/userspace-api/media/drivers/stm32-uapi.rst
> to explain the detail of dma2d's ioctl.
> - reserved 16 ioctls from v4l2-controls.h for stm32, introduce stm32-media.h.
> - collect Reviewed-by tag from Rob Herring.
> - update dma2d driver from Hans's review. the details can be found
> at related patches.
> v1 link:
> https://lore.kernel.org/lkml/1621508727-24486-1-git-send-email-dillon.minfei@xxxxxxxxx/
>
> v1:
> The commit based on kernel(master): c3d0e3fd41b7f0f5d5d5b6022ab7e813f04ea727
>
> Note for v4l2-compliance tool on nu-mmu platform:
> I add two change based on v4l-utils since commit:
> f0c7e3d71eaf4182bae7eb3ee0e43b4eeb047ea9
>
> - change fork() to vfork() in v4l2-test-controls.cpp
> since no-mmu platform don't include fork().
>
> with v4l2-compliance test log (with above modification):
> since the stm32f469-disco ram limitation, there are 25 failed on
> dma_alloc_coherent()
>
> Really appreciate if someone can help to test this patch on the STM32429I-EVAL
> evaluation board (https://www.st.com/en/evaluation-tools/stm32429i-eval.html)
> 8M x 32-bit SDRAM, 1M x 16-bit SRAM and 8M x 16-bit NOR Flash
>
> ~ # v4l2-compliance -f -d /dev/video0 > /dev/ttyprintk
> [ 1798.550690] [U] v4l2-compliance 1.21.0-4855, 32 bits, 32-bit time_t
> [ 1799.527504] [U] v4l2-compliance SHA: 700f5ded9c6d 2021-10-02 09:01:05
> [ 1800.534558] [U] Compliance test for stm-dma2d device /dev/video0:
> [ 1801.514999] [U] Driver Info:
> [ 1801.998840] [U] Driver name : stm-dma2d
> [ 1802.482151] [U] Card type : stm-dma2d
> [ 1802.959808] [U] Bus info : platform:stm-dma2d
> [ 1803.435715] [U] Driver version : 5.15.0
> [ 1803.904938] [U] Capabilities : 0x84208000
> [ 1804.371290] [U] Video Memory-to-Memory
> [ 1804.830870] [U] Streaming
> [ 1805.281465] [U] Extended Pix Format
> [ 1805.733249] [U] Device Capabilities
> [ 1806.181369] [U] Device Caps : 0x04208000
> [ 1806.622899] [U] Video Memory-to-Memory
> [ 1807.057208] [U] Streaming
> [ 1807.483866] [U] Extended Pix Format
> [ 1807.907678] [U] Required ioctls:
> [ 1808.325287] [U] test VIDIOC_QUERYCAP: OK
> [ 1808.785260] [U] test invalid ioctls: OK
> [ 1809.199015] [U] Allow for multiple opens:
> [ 1809.613894] [U] test second /dev/video0 open: OK
> [ 1810.416746] [U] test VIDIOC_QUERYCAP: OK
> [ 1810.827974] [U] test VIDIOC_G/S_PRIORITY: OK
> [ 1811.466506] [U] test for unlimited opens: OK
> [ 1811.868388] [U] Debug ioctls:
> [ 1812.257689] [U] test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
> [ 1813.034108] [U] test VIDIOC_LOG_STATUS: OK (Not Supported)
> [ 1813.807583] [U] Input ioctls:
> [ 1814.192271] [U] test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
> [ 1814.958053] [U] test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> [ 1815.721424] [U] test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
> [ 1816.486425] [U] test VIDIOC_ENUMAUDIO: OK (Not Supported)
> [ 1817.253873] [U] test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
> [ 1818.021773] [U] test VIDIOC_G/S_AUDIO: OK (Not Supported)
> [ 1818.783542] [U] Inputs: 0 Audio Inputs: 0 Tuners: 0
> [ 1819.170414] [U] Output ioctls:
> [ 1819.549601] [U] test VIDIOC_G/S_MODULATOR: OK (Not Supported)
> [ 1820.306132] [U] test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> [ 1821.085495] [U] test VIDIOC_ENUMAUDOUT: OK (Not Supported)
> [ 1821.883894] [U] test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
> [ 1822.698269] [U] test VIDIOC_G/S_AUDOUT: OK (Not Supported)
> [ 1823.541345] [U] Outputs: 0 Audio Outputs: 0 Modulators: 0
> [ 1824.391635] [U] Input/Output configuration ioctls:
> [ 1824.830293] [U] test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
> [ 1825.708848] [U] test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
> [ 1826.608994] [U] test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
> [ 1827.520616] [U] test VIDIOC_G/S_EDID: OK (Not Supported)
> [ 1828.438211] [U] Control ioctls:
> [ 1828.926449] [U] test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> [ 1829.856497] [U] test VIDIOC_QUERYCTRL: OK
> [ 1830.335647] [U] test VIDIOC_G/S_CTRL: OK
> [ 1830.816513] [U] test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> [ 1831.740067] [U] test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> [ 1832.666736] [U] test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> [ 1833.597005] [U] Standard Controls: 3 Private Controls: 0
> [ 1834.070452] [U] Format ioctls:
> [ 1834.540460] [U] test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> [ 1835.473065] [U] test VIDIOC_G/S_PARM: OK (Not Supported)
> [ 1836.395238] [U] test VIDIOC_G_FBUF: OK (Not Supported)
> [ 1837.322128] [U] test VIDIOC_G_FMT: OK
> [ 1837.798880] [U] test VIDIOC_TRY_FMT: OK
> [ 1838.267574] [U] test VIDIOC_S_FMT: OK
> [ 1838.724264] [U] test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> [ 1839.627408] [U] test Cropping: OK (Not Supported)
> [ 1840.526875] [U] test Composing: OK (Not Supported)
> [ 1841.428562] [U] test Scaling: OK
> [ 1841.882087] [U] Codec ioctls:
> [ 1842.331672] [U] test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> [ 1843.221419] [U] test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> [ 1844.105854] [U] test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)
> [ 1844.993986] [U] Buffer ioctls:
> [ 1845.558827] [U] test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> [ 1846.486226] [U] test VIDIOC_EXPBUF: OK
> [ 1846.936148] [U] test Requests: OK (Not Supported)
> [ 1847.805687] [U] test TIME32/64: OK
> [ 1848.255712] [U] Test input 0:
> [ 1848.685591] [U] Stream using all formats:
> [ 1853.598085] [U] BA24 (32-bit ARGB 8-8-8-8) 1x1 -> BA24 (32-bit ARGB 8-8-8-8) 1x1: OK
> [ 1858.085109] [U] BA24 (32-bit ARGB 8-8-8-8) 1x1 -> RGB3 (24-bit RGB 8-8-8) 1x1: OK
> [ 1861.799188] [U] BA24 (32-bit ARGB 8-8-8-8) 1x1 -> RGBP (16-bit RGB 5-6-5) 1x1: OK
> [ 1864.859534] [U] BA24 (32-bit ARGB 8-8-8-8) 1x1 -> AR15 (16-bit ARGB 1-5-5-5) 1x1: OK
> [ 1867.974755] [U] BA24 (32-bit ARGB 8-8-8-8) 1x1 -> AR12 (16-bit ARGB 4-4-4-4) 1x1: OK
> [ 1868.466365] stm-dma2d 4002b000.dma2d: dma alloc of size 4294643712 failed
> [ 1868.971398] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1869.487572] [U] BA24 (32-bit ARGB 8-8-8-8) 16383x65535 -> BA24 (32-bit ARGB 8-8-8-8) 16383x65535: FAIL

Have you considered adapting your maximum width/height to something reasonable ?
Consider V4L2 drivers will usually be used for streaming, so using 2 OUTPUT and
2 CAPTURE buffer isn't special, so perhaps find something that will be possible
to allocate ? I bet you can't even have more then 4G of ram on that device, so
even if theoretically you could program the HW for 16383x65535, it is physically
impossible to allocate a second buffer of that size (or any size).

> [ 1870.017197] stm-dma2d 4002b000.dma2d: dma alloc of size 4294643712 failed
> [ 1870.562272] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1871.147644] [U] BA24 (32-bit ARGB 8-8-8-8) 16383x65535 -> RGB3 (24-bit RGB 8-8-8) 16383x65535: FAIL
> [ 1871.780530] stm-dma2d 4002b000.dma2d: dma alloc of size 4294643712 failed
> [ 1872.431797] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1873.112100] [U] BA24 (32-bit ARGB 8-8-8-8) 16383x65535 -> RGBP (16-bit RGB 5-6-5) 16383x65535: FAIL
> [ 1873.805156] stm-dma2d 4002b000.dma2d: dma alloc of size 4294643712 failed
> [ 1874.492353] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1875.221576] [U] BA24 (32-bit ARGB 8-8-8-8) 16383x65535 -> AR15 (16-bit ARGB 1-5-5-5) 16383x65535: FAIL
> [ 1876.000283] stm-dma2d 4002b000.dma2d: dma alloc of size 4294643712 failed
> [ 1876.808963] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1877.634785] [U] BA24 (32-bit ARGB 8-8-8-8) 16383x65535 -> AR12 (16-bit ARGB 4-4-4-4) 16383x65535: FAIL
> [ 1883.283141] [U] BA24 (32-bit ARGB 8-8-8-8) 240x320 -> BA24 (32-bit ARGB 8-8-8-8) 240x320: OK
> [ 1888.533587] [U] BA24 (32-bit ARGB 8-8-8-8) 240x320 -> RGB3 (24-bit RGB 8-8-8) 240x320: OK
> [ 1892.729322] [U] BA24 (32-bit ARGB 8-8-8-8) 240x320 -> RGBP (16-bit RGB 5-6-5) 240x320: OK
> [ 1896.013783] [U] BA24 (32-bit ARGB 8-8-8-8) 240x320 -> AR15 (16-bit ARGB 1-5-5-5) 240x320: OK
> [ 1899.195802] [U] BA24 (32-bit ARGB 8-8-8-8) 240x320 -> AR12 (16-bit ARGB 4-4-4-4) 240x320: OK
> [ 1902.318853] [U] RGB3 (24-bit RGB 8-8-8) 1x1 -> BA24 (32-bit ARGB 8-8-8-8) 1x1: OK
> [ 1905.399663] [U] RGB3 (24-bit RGB 8-8-8) 1x1 -> RGB3 (24-bit RGB 8-8-8) 1x1: OK
> [ 1908.515463] [U] RGB3 (24-bit RGB 8-8-8) 1x1 -> RGBP (16-bit RGB 5-6-5) 1x1: OK
> [ 1911.589775] [U] RGB3 (24-bit RGB 8-8-8) 1x1 -> AR15 (16-bit ARGB 1-5-5-5) 1x1: OK
> [ 1914.682147] [U] RGB3 (24-bit RGB 8-8-8) 1x1 -> AR12 (16-bit ARGB 4-4-4-4) 1x1: OK
> [ 1915.169478] stm-dma2d 4002b000.dma2d: dma alloc of size 3220983808 failed
> [ 1915.671278] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1916.184281] [U] RGB3 (24-bit RGB 8-8-8) 16383x65535 -> BA24 (32-bit ARGB 8-8-8-8) 16383x65535: FAIL
> [ 1916.709840] stm-dma2d 4002b000.dma2d: dma alloc of size 3220983808 failed
> [ 1917.252352] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1917.834611] [U] RGB3 (24-bit RGB 8-8-8) 16383x65535 -> RGB3 (24-bit RGB 8-8-8) 16383x65535: FAIL
> [ 1918.463784] stm-dma2d 4002b000.dma2d: dma alloc of size 3220983808 failed
> [ 1919.114290] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1919.789982] [U] RGB3 (24-bit RGB 8-8-8) 16383x65535 -> RGBP (16-bit RGB 5-6-5) 16383x65535: FAIL
> [ 1920.479624] stm-dma2d 4002b000.dma2d: dma alloc of size 3220983808 failed
> [ 1921.165202] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1921.893374] [U] RGB3 (24-bit RGB 8-8-8) 16383x65535 -> AR15 (16-bit ARGB 1-5-5-5) 16383x65535: FAIL
> [ 1922.668057] stm-dma2d 4002b000.dma2d: dma alloc of size 3220983808 failed
> [ 1923.469342] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1924.297500] [U] RGB3 (24-bit RGB 8-8-8) 16383x65535 -> AR12 (16-bit ARGB 4-4-4-4) 16383x65535: FAIL
> [ 1929.890593] [U] RGB3 (24-bit RGB 8-8-8) 240x320 -> BA24 (32-bit ARGB 8-8-8-8) 240x320: OK
> [ 1935.098497] [U] RGB3 (24-bit RGB 8-8-8) 240x320 -> RGB3 (24-bit RGB 8-8-8) 240x320: OK
> [ 1939.250033] [U] RGB3 (24-bit RGB 8-8-8) 240x320 -> RGBP (16-bit RGB 5-6-5) 240x320: OK
> [ 1942.503854] [U] RGB3 (24-bit RGB 8-8-8) 240x320 -> AR15 (16-bit ARGB 1-5-5-5) 240x320: OK
> [ 1945.659254] [U] RGB3 (24-bit RGB 8-8-8) 240x320 -> AR12 (16-bit ARGB 4-4-4-4) 240x320: OK
> [ 1948.763903] [U] RGBP (16-bit RGB 5-6-5) 1x1 -> BA24 (32-bit ARGB 8-8-8-8) 1x1: OK
> [ 1951.832407] [U] RGBP (16-bit RGB 5-6-5) 1x1 -> RGB3 (24-bit RGB 8-8-8) 1x1: OK
> [ 1954.927592] [U] RGBP (16-bit RGB 5-6-5) 1x1 -> RGBP (16-bit RGB 5-6-5) 1x1: OK
> [ 1957.991536] [U] RGBP (16-bit RGB 5-6-5) 1x1 -> AR15 (16-bit ARGB 1-5-5-5) 1x1: OK
> [ 1961.086603] [U] RGBP (16-bit RGB 5-6-5) 1x1 -> AR12 (16-bit ARGB 4-4-4-4) 1x1: OK
> [ 1961.575893] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 1962.079572] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1962.594354] [U] RGBP (16-bit RGB 5-6-5) 16383x65535 -> BA24 (32-bit ARGB 8-8-8-8) 16383x65535: FAIL
> [ 1963.121249] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 1963.665788] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1964.249129] [U] RGBP (16-bit RGB 5-6-5) 16383x65535 -> RGB3 (24-bit RGB 8-8-8) 16383x65535: FAIL
> [ 1964.880104] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 1965.530670] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1966.210598] [U] RGBP (16-bit RGB 5-6-5) 16383x65535 -> RGBP (16-bit RGB 5-6-5) 16383x65535: FAIL
> [ 1966.902316] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 1967.590215] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1968.319871] [U] RGBP (16-bit RGB 5-6-5) 16383x65535 -> AR15 (16-bit ARGB 1-5-5-5) 16383x65535: FAIL
> [ 1969.097012] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 1969.900036] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 1970.729920] [U] RGBP (16-bit RGB 5-6-5) 16383x65535 -> AR12 (16-bit ARGB 4-4-4-4) 16383x65535: FAIL
> [ 1976.318963] [U] RGBP (16-bit RGB 5-6-5) 240x320 -> BA24 (32-bit ARGB 8-8-8-8) 240x320: OK
> [ 1981.494224] [U] RGBP (16-bit RGB 5-6-5) 240x320 -> RGB3 (24-bit RGB 8-8-8) 240x320: OK
> [ 1985.599406] [U] RGBP (16-bit RGB 5-6-5) 240x320 -> RGBP (16-bit RGB 5-6-5) 240x320: OK
> [ 1988.829141] [U] RGBP (16-bit RGB 5-6-5) 240x320 -> AR15 (16-bit ARGB 1-5-5-5) 240x320: OK
> [ 1991.998991] [U] RGBP (16-bit RGB 5-6-5) 240x320 -> AR12 (16-bit ARGB 4-4-4-4) 240x320: OK
> [ 1995.084529] [U] AR15 (16-bit ARGB 1-5-5-5) 1x1 -> BA24 (32-bit ARGB 8-8-8-8) 1x1: OK
> [ 1998.191853] [U] AR15 (16-bit ARGB 1-5-5-5) 1x1 -> RGB3 (24-bit RGB 8-8-8) 1x1: OK
> [ 2001.307217] [U] AR15 (16-bit ARGB 1-5-5-5) 1x1 -> RGBP (16-bit RGB 5-6-5) 1x1: OK
> [ 2004.413725] [U] AR15 (16-bit ARGB 1-5-5-5) 1x1 -> AR15 (16-bit ARGB 1-5-5-5) 1x1: OK
> [ 2007.527437] [U] AR15 (16-bit ARGB 1-5-5-5) 1x1 -> AR12 (16-bit ARGB 4-4-4-4) 1x1: OK
> [ 2008.016277] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 2008.523318] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 2009.038828] [U] AR15 (16-bit ARGB 1-5-5-5) 16383x65535 -> BA24 (32-bit ARGB 8-8-8-8) 16383x65535: FAIL
> [ 2009.567269] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 2010.112209] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 2010.697226] [U] AR15 (16-bit ARGB 1-5-5-5) 16383x65535 -> RGB3 (24-bit RGB 8-8-8) 16383x65535: FAIL
> [ 2011.329552] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 2011.979307] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 2012.658449] [U] AR15 (16-bit ARGB 1-5-5-5) 16383x65535 -> RGBP (16-bit RGB 5-6-5) 16383x65535: FAIL
> [ 2013.350104] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 2014.035612] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 2014.762649] [U] AR15 (16-bit ARGB 1-5-5-5) 16383x65535 -> AR15 (16-bit ARGB 1-5-5-5) 16383x65535: FAIL
> [ 2015.538183] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 2016.338784] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 2017.166692] [U] AR15 (16-bit ARGB 1-5-5-5) 16383x65535 -> AR12 (16-bit ARGB 4-4-4-4) 16383x65535: FAIL
> [ 2022.744387] [U] AR15 (16-bit ARGB 1-5-5-5) 240x320 -> BA24 (32-bit ARGB 8-8-8-8) 240x320: OK
> [ 2027.927575] [U] AR15 (16-bit ARGB 1-5-5-5) 240x320 -> RGB3 (24-bit RGB 8-8-8) 240x320: OK
> [ 2032.066337] [U] AR15 (16-bit ARGB 1-5-5-5) 240x320 -> RGBP (16-bit RGB 5-6-5) 240x320: OK
> [ 2035.295351] [U] AR15 (16-bit ARGB 1-5-5-5) 240x320 -> AR15 (16-bit ARGB 1-5-5-5) 240x320: OK
> [ 2038.476408] [U] AR15 (16-bit ARGB 1-5-5-5) 240x320 -> AR12 (16-bit ARGB 4-4-4-4) 240x320: OK
> [ 2041.591223] [U] AR12 (16-bit ARGB 4-4-4-4) 1x1 -> BA24 (32-bit ARGB 8-8-8-8) 1x1: OK
> [ 2044.678274] [U] AR12 (16-bit ARGB 4-4-4-4) 1x1 -> RGB3 (24-bit RGB 8-8-8) 1x1: OK
> [ 2047.774851] [U] AR12 (16-bit ARGB 4-4-4-4) 1x1 -> RGBP (16-bit RGB 5-6-5) 1x1: OK
> [ 2050.849788] [U] AR12 (16-bit ARGB 4-4-4-4) 1x1 -> AR15 (16-bit ARGB 1-5-5-5) 1x1: OK
> [ 2053.955560] [U] AR12 (16-bit ARGB 4-4-4-4) 1x1 -> AR12 (16-bit ARGB 4-4-4-4) 1x1: OK
> [ 2054.446212] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 2054.951517] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 2055.467584] [U] AR12 (16-bit ARGB 4-4-4-4) 16383x65535 -> BA24 (32-bit ARGB 8-8-8-8) 16383x65535: FAIL
> [ 2055.997127] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 2056.543193] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 2057.128457] [U] AR12 (16-bit ARGB 4-4-4-4) 16383x65535 -> RGB3 (24-bit RGB 8-8-8) 16383x65535: FAIL
> [ 2057.761407] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 2058.413191] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 2059.093749] [U] AR12 (16-bit ARGB 4-4-4-4) 16383x65535 -> RGBP (16-bit RGB 5-6-5) 16383x65535: FAIL
> [ 2059.786201] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 2060.472393] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 2061.200709] [U] AR12 (16-bit ARGB 4-4-4-4) 16383x65535 -> AR15 (16-bit ARGB 1-5-5-5) 16383x65535: FAIL
> [ 2061.977728] stm-dma2d 4002b000.dma2d: dma alloc of size 2147323904 failed
> [ 2062.780816] [U] fail: v4l2-test-buffers.cpp(1349): q.reqbufs(node, 2)
> [ 2063.610351] [U] AR12 (16-bit ARGB 4-4-4-4) 16383x65535 -> AR12 (16-bit ARGB 4-4-4-4) 16383x65535: FAIL
> [ 2069.207680] [U] AR12 (16-bit ARGB 4-4-4-4) 240x320 -> BA24 (32-bit ARGB 8-8-8-8) 240x320: OK
> [ 2074.392036] [U] AR12 (16-bit ARGB 4-4-4-4) 240x320 -> RGB3 (24-bit RGB 8-8-8) 240x320: OK
> [ 2078.538621] [U] AR12 (16-bit ARGB 4-4-4-4) 240x320 -> RGBP (16-bit RGB 5-6-5) 240x320: OK
> [ 2081.749134] [U] AR12 (16-bit ARGB 4-4-4-4) 240x320 -> AR15 (16-bit ARGB 1-5-5-5) 240x320: OK
> [ 2084.922145] [U] AR12 (16-bit ARGB 4-4-4-4) 240x320 -> AR12 (16-bit ARGB 4-4-4-4) 240x320: OK
> [ 2085.416538] [U] Total for stm-dma2d device /dev/video0: 121, Succeeded: 96, Failed: 25, Warnings: 0
> *** BLURB HERE ***

^ I guess that was meant for you to justify the failures.

>
> Dillon Min (10):
> media: admin-guide: add stm32-dma2d description
> media: dt-bindings: media: add document for STM32 DMA2d bindings
> ARM: dts: stm32: Add DMA2D support for STM32F429 series soc
> ARM: dts: stm32: Enable DMA2D on STM32F469-DISCO board
> media: v4l2-mem2mem: add v4l2_m2m_get_unmapped_area for no-mmu
> platform
> media: videobuf2: Fix the size printk format
> media: v4l2-ctrls: Add V4L2_CID_COLORFX_CBCR max setting
> media: v4l2-ctrls: Add RGB color effects control
> clk: stm32: Fix ltdc's clock turn off by clk_disable_unused() after
> system enter shell
> media: stm32-dma2d: STM32 DMA2D driver
>
> .../admin-guide/media/platform-cardlist.rst | 1 +
> .../devicetree/bindings/media/st,stm32-dma2d.yaml | 71 ++
> Documentation/userspace-api/media/v4l/control.rst | 9 +
> arch/arm/boot/dts/stm32f429.dtsi | 10 +
> arch/arm/boot/dts/stm32f469-disco.dts | 4 +
> drivers/clk/clk-stm32f4.c | 4 -
> .../media/common/videobuf2/videobuf2-dma-contig.c | 4 +-
> drivers/media/platform/Kconfig | 11 +
> drivers/media/platform/Makefile | 1 +
> drivers/media/platform/stm32/Makefile | 2 +
> drivers/media/platform/stm32/dma2d/dma2d-hw.c | 143 ++++
> drivers/media/platform/stm32/dma2d/dma2d-regs.h | 113 ++++
> drivers/media/platform/stm32/dma2d/dma2d.c | 739 +++++++++++++++++++++
> drivers/media/platform/stm32/dma2d/dma2d.h | 135 ++++
> drivers/media/v4l2-core/v4l2-ctrls-defs.c | 12 +-
> drivers/media/v4l2-core/v4l2-mem2mem.c | 21 +
> include/media/v4l2-mem2mem.h | 5 +
> include/uapi/linux/v4l2-controls.h | 4 +-
> 18 files changed, 1280 insertions(+), 9 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/media/st,stm32-dma2d.yaml
> create mode 100644 drivers/media/platform/stm32/dma2d/dma2d-hw.c
> create mode 100644 drivers/media/platform/stm32/dma2d/dma2d-regs.h
> create mode 100644 drivers/media/platform/stm32/dma2d/dma2d.c
> create mode 100644 drivers/media/platform/stm32/dma2d/dma2d.h
>

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