[PATCH v2 0/9] Add support for DMA2D of STMicroelectronics STM32 Soc series

[dillon.minfei@gmail.com]

From: Dillon Min <dillon.minfei@gmail.com>

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

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@gmail.com/

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().

- bypass VIDIOC_QUERYCAP nullptr check
  I'm not sure if this is the bug from my cross compile tool
  which created by buildroot. user area's nullptr can't be
  detected by kernel side, i was try to add access_ok()
  in v4l2-ioctl.c, but no help

  If this case must be fixed, i will continue to debug it.
  the error log:
  ...
  fail: v4l2-compliance.cpp(623): doioctl(node, VIDIOC_QUERYCAP, nullptr) !=
  EFAULT
  ..

My changes on v4l2-compliance:

diff --git a/utils/v4l2-compliance/v4l2-compliance.cpp
b/utils/v4l2-compliance/v4l2-compliance.cpp
index 90a5036..a25fe4f 100644
--- a/utils/v4l2-compliance/v4l2-compliance.cpp
+++ b/utils/v4l2-compliance/v4l2-compliance.cpp
@@ -620,7 +620,7 @@ static int testCap(struct node *node)

        memset(&vcap, 0xff, sizeof(vcap));
        // Must always be there
-       fail_on_test(doioctl(node, VIDIOC_QUERYCAP, nullptr) != EFAULT);
+       //fail_on_test(doioctl(node, VIDIOC_QUERYCAP, nullptr) != EFAULT);
        fail_on_test(doioctl(node, VIDIOC_QUERYCAP, &vcap));
        fail_on_test(check_ustring(vcap.driver, sizeof(vcap.driver)));
        fail_on_test(check_ustring(vcap.card, sizeof(vcap.card)));

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

/ # free
            total       used       free     shared    buffers     cached
Mem:        15604       6104       9500     0         0           2488
-/+ buffers/cache:      3616       11988

[1] v4l2-compliance test result:

./v4l2-compliance -s -f -d /dev/video0 &
[1] 34 ./v4l2-compliance -s -f -d /dev/video0
/ # v4l2-compliance 1.21.0-4831, 32 bits, 32-bit time_t
v4l2-compliance SHA: a4f2e3a6f306 2021-07-13 08:04:15

Compliance test for stm-dma2d device /dev/video0:

Driver Info:
        Driver name      : stm-dma2d
        Card type        : stm-dma2d
        Bus info         : platform:stm-dma2d
        Driver version   : 5.14.0
        Capabilities     : 0x84208000
                Video Memory-to-Memory
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps      : 0x04208000
                Video Memory-to-Memory
                Streaming
                Extended Pix Format

Required ioctls:
        test VIDIOC_QUERYCAP: OK
        test invalid ioctls: OK

Allow for multiple opens:
        test second /dev/video0 open: OK
        test VIDIOC_QUERYCAP: OK
        test VIDIOC_G/S_PRIORITY: OK
        test for unlimited opens: OK

Debug ioctls:
        test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
        test VIDIOC_LOG_STATUS: OK (Not Supported)

Input ioctls:
        test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
        test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
        test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
        test VIDIOC_ENUMAUDIO: OK (Not Supported)
        test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
        test VIDIOC_G/S_AUDIO: OK (Not Supported)
        Inputs: 0 Audio Inputs: 0 Tuners: 0

Output ioctls:
        test VIDIOC_G/S_MODULATOR: OK (Not Supported)
        test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
        test VIDIOC_ENUMAUDOUT: OK (Not Supported)
        test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
        test VIDIOC_G/S_AUDOUT: OK (Not Supported)
        Outputs: 0 Audio Outputs: 0 Modulators: 0

Input/Output configuration ioctls:
        test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
        test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
        test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
        test VIDIOC_G/S_EDID: OK (Not Supported)[

Control ioctls:
 test VIDIOC_QUERY_EX _CTRL/QUERY ENU: 55.029750] stm-dma2d 4002b000.dma2d: Format not supported: ▒▒▒▒, use the default.
OK
        test VIDIOC_QUERYCTRL: OK
        test VIDIOC_G[S_CTRL: OK
        test VIDIOC_G/S/TRY_EXT_CTRLS  OK
        test VI I C_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
        test 55DIOC_G/S_JP.784007] stm-dma2d 4002b000.dma2d: Format not supported: ▒▒▒▒, use the default.
EGCOMP: OK (Not Supported)
        Standard Controls: 2 Private[Controls: 2

For a  ioctls:
        5est VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK0m
        test VI.IOC_G/S_PAR5: OK (Not 50538] stm-dma2d 4002b000.dma2d: Format not supported: ▒▒▒▒, use the default.
Supported)
        test VIDIOC_G_FBUF: OK (Not Supported)
        test[V DIOC_G_FM : OK
        test VID5OC_T7Y_FMT: OK
.316175] stm-dma2d 4002b000.dma2d: Format not supported: ▒▒▒▒, use the default.
        test VIDIOC_S_FMT: OK
        test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
        test Cropping: OK (Not Supported)
        test Composing: OK (Not Supported)
        test Scaling: OK

Codec ioctls:
        test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
        test VIDIOC_G_ENC_INDEX: OK (Not Supported)
        test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)

Buffer ioctls:
        test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
        test VIDIOC_EXPBUF: OK
        test Requests: OK (Not Supported)

Test input 0:

Streaming ioctls:
        test read/write: OK (Not Supported)
        test blocking wait: OK
[   59.905900] use of bytesused == 0 is deprecated and will be removed in the future,
[   60.665190] use the actual size instead.
        Video Capture: Captured 58 buffers
        test MMAP (no poll): OK
        Video Capture: Captured 58 buffers
        test MMAP (select): OK
        Video Capture: Captured 58 buffers
        test MMAP (epoll): OK
        test USERPTR (no poll): OK (Not Supported)
        test USERPTR (select): OK (Not Supported)
        test DMABUF: Cannot test, specify --expbuf-device

Stream using all formats:
        Video Capture: Captured 8 buffers
        BA24 (32-bit ARGB 8-8-8-8) 1x1 -> BA24 (32-bit ARGB 8-8-8-8) 1x1: OK
        Video Capture: Captured 8 buffers
        BA24 (32-bit ARGB 8-8-8-8) 1x1 -> RGB3 (24-bit RGB 8-8-8) 1x1: OK
        Video Capture: Captured 8 buffers
        BA24 (32-bit ARGB 8-8-8-8) 1x1 -> RGBP (16-bit RGB 5-6-5) 1x1: OK
        Video Capture: Captured 8 buffers
        BA24 (32-bit ARGB 8-8-8-8) 1x1 -> AR15 (16-bit ARGB 1-5-5-5) 1x1: OK
        Video Capture: Captured 8 buffers
        BA24 (32-bit ARGB 8-8-8-8) 1x1 -> AR12 (16-bit ARGB 4-4-4-4) 1x1: OK
[   83.015780] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size -323584 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        BA24 (32-bit ARGB 8-8-8-8) 16383x65535 -> BA24 (32-bit ARGB 8-8-8-8) 16383x65535: FAIL
[   83.959807] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size -323584 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        BA24 (32-bit ARGB[8-8-8-8) 16383x 553  -> RGB3 (24- it R8B 8-8-84 16383x65535: FAIL
.899851] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size -323584 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        BA24 (32-bit ARGB 8-8-8-8)[16383x65535 -> RGBP (16-bit RGB  -6-5) 16383x65535: FA L
85.848108] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size -323584 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        BA24 (32-bit ARGB 8-8-8-8) 16383x65535 -> AR15 (16-bit ARGB 1-5-5-5) 16[83x65535: F IL
  86.802223] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size -323584 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        BA24 (32-bit ARGB 8-8-8-8) 16383x65535 -> AR12 (16-bit ARGB 4-4-4-4) 16383x65535: FAIL
        Video Capture: Captured 8 buffers
        BA24 (32-bit ARGB 8-8-8-8) 240x320 -> BA24 (32-bit ARGB 8-8-8-8) 240x320: OK
        Video Capture: Captured 8 buffers
        BA24 (32-bit ARGB 8-8-8-8) 240x320 -> RGB3 (24-bit RGB 8-8-8) 240x320: OK
        Video Capture: Captured 8 buffers
        BA24 (32-bit ARGB 8-8-8-8) 240x320 -> RGBP (16-bit RGB 5-6-5) 240x320: OK
        Video Capture: Captured 8 buffers
        BA24 (32-bit ARGB 8-8-8-8) 240x320 -> AR15 (16-bit ARGB 1-5-5-5) 240x320: OK
        Video Capture: Captured 8 buffers
        BA24 (32-bit ARGB 8-8-8-8) 240x320 -> AR12 (16-bit ARGB 4-4-4-4) 240x320: OK
        Video Capture: Captured 8 buffers
        RGB3 (24-bit RGB 8-8-8) 1x1 -> BA24 (32-bit ARGB 8-8-8-8) 1x1: OK
        Video Capture: Captured 8 buffers
        RGB3 (24-bit RGB 8-8-8) 1x1 -> RGB3 (24-bit RGB 8-8-8) 1x1: OK
        Video Capture: Captured 8 buffers
        RGB3 (24-bit RGB 8-8-8) 1x1 -> RGBP (16-bit RGB 5-6-5) 1x1: OK
        Video Capture: Captured 8 buffers
        RGB3 (24-bit RGB 8-8-8) 1x1 -> AR15 (16-bit ARGB 1-5-5-5) 1x1: OK
        Video Capture: Captured 8 buffers
        RGB3 (24-bit RGB 8-8-8) 1x1 -> AR12 (16-bit[ARGB 4-4-4-4) 1x1: OK
  89.086437] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size -1073983488 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        RGB3 (24-bi[  GB 8-8-8) 16383x65535  > BA24 (32-bit A GB 8-8-8-8) 16383965505: FA.L
030474] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size -1073983488 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
978755] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size -1073983488 failed035: 31mFAIL
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        RGB3 (24-bit RGB [-8-8) 16383 65535 -> RGBP (16-bit RGB 5-6-5) 16383x65535: FA L
91.923561] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size -1073983488 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        RGB3 (24-bit RGB 8-8-8) 16383x65535 -> AR15 (16-bit ARGB 1-5-5-5) 16383x65535: FAIL
[   92.885742] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size -1073983488 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        RGB3 (24-bit RGB 8-8-8) 16383x65535 -> AR12 (16-bit ARGB 4-4-4-4) 16383x65535: FAIL
        Video Capture: Captured 8 buffers
        RGB3 (24-bit RGB 8-8-8) 240x320 -> BA24 (32-bit ARGB 8-8-8-8) 240x320: OK
        Video Capture: Captured 8 buffers
        RGB3 (24-bit RGB 8-8-8) 240x320 -> RGB3 (24-bit RGB 8-8-8) 240x320: OK
        Video Capture: Captured 8 buffers
        RGB3 (24-bit RGB 8-8-8) 240x320 -> RGBP (16-bit RGB 5-6-5) 240x320: OK
        Video Capture: Captured 8 buffers
        RGB3 (24-bit RGB 8-8-8) 240x320 -> AR15 (16-bit ARGB 1-5-5-5) 240x320: OK
        Video Capture: Captured 8 buffers
        RGB3 (24-bit RGB 8-8-8) 240x320 -> AR12 (16-bit ARGB 4-4-4-4) 240x320: OK
        Video Capture: Captured 8 buffers
        RGBP (16-bit RGB 5-6-5) 1x1 -> BA24 (32-bit ARGB 8-8-8-8) 1x1: OK
        Video Capture: Captured 8 buffers
        RGBP (16-bit RGB 5-6-5) 1x1 -> RGB3 (24-bit RGB 8-8-8) 1x1: OK
        Video Capture: Captured 8 buffers
        RGBP (16-bit RGB 5-6-5) 1x1 -> RGBP (16-bit RGB 5-6-5) 1x1: OK
        Video Capture: Captured 8 buffers
        RGBP (16-bit RGB 5-6-5) 1x1 -> AR15 (16-bit ARGB 1-5-5-5) 1x1: OK
        Video Capture: Captured 8 buffers
        RGBP (16-bit RGB 5-6-5) 1x1 -> AR12 (16-bit AR[B 4-4-4-4) 1x1: OK
  95.008330] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
50176] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed83x95535: FAIL
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        RGBP (16-bit RGB 5-6-[) 16383x65535 -> R B3 (24-bit RG  8-8-8) 16383x65535: FAIL9[0m
6.895671] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        RGBP (16-bit RGB 5-6-5) 16383x65535 -> RGBP (16-bit RGB 5-6-5) 16383x65535: FAIL
[   97.851563] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        RGBP (16-bit [GB 5 6-5) 16383x6553  -> AR15 (16-bit ARGB 1-5-5-5) 16383x69535: FAIL.
                                                                                            791193] stm-dma2d 4002b000.dma2d: dma_alloc_coherd
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        RGBP (16-bit RGB 5-6-5) 16383x65535 -> AR12 (16-bit ARGB 4-4-4-4) 16383x65535: FAIL
        Video Capture: Captured 8 buffers
        RGBP (16-bit RGB 5-6-5) 240x320 -> BA24 (32-bit ARGB 8-8-8-8) 240x320: OK
        Video Capture: Captured 8 buffers
        RGBP (16-bit RGB 5-6-5) 240x320 -> RGB3 (24-bit RGB 8-8-8) 240x320: OK
        Video Capture: Captured 8 buffers
        RGBP (16-bit RGB 5-6-5) 240x320 -> RGBP (16-bit RGB 5-6-5) 240x320: OK
        Video Capture: Captured 8 buffers
        RGBP (16-bit RGB 5-6-5) 240x320 -> AR15 (16-bit ARGB 1-5-5-5) 240x320: OK
        Video Capture: Captured 8 buffers
        RGBP (16-bit RGB 5-6-5) 240x320 -> AR12 (16-bit ARGB 4-4-4-4) 240x320: OK
        Video Capture: Captured 8 buffers
        AR15 (16-bit ARGB 1-5-5-5) 1x1 -> BA24 (32-bit ARGB 8-8-8-8) 1x1: OK
        Video Capture: Captured 8 buffers
        AR15 (16-bit ARGB 1-5-5-5) 1x1 -> RGB3 (24-bit RGB 8-8-8) 1x1: OK
        Video Capture: Captured 8 buffers
        AR15 (16-bit ARGB 1-5-5-5) 1x1 -> RGBP (16-bit RGB 5-6-5) 1x1: OK
        Video Capture: Captured 8 buffers
        AR15 (16-bit ARGB 1-5-5-5) 1x1 -> AR15 (16-bit ARGB 1-5-5-5) 1x1: OK
        Video Capture: Captured 8 buffers
        AR15 (16-bit ARGB 1-5-5-5) 1x1 -[ AR12 (16-bit  RGB 4-4-4-4) 1x1: OK
100.827052] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        AR15 (16-bit ARGB 1-5-5-5) 16383[655 5 -> BA24 (32-bit ARGB 8-8-8-8)  6383x65535: F0IL0m
.764900] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        AR15 (16-bit ARGB 1-5-5-5)[163 3x65535 -> RGB3 (24- it RGB 8-8-8) 16383x65535: AIL0[0m
2.704672] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        AR15 (16-bit ARGB 1-5-5-5) 16383x65535 -> RGBP (16-bit RGB 5-6-5) 16383x65535: FAIL
[  103.656921] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        AR15 (16-bit ARGB 1-5-5-5) 16383x65535[-> AR15 (16-bit ARGB 1 5-5-5) 16383x65535: FAIL
104.596785] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        AR15 (16-bit ARGB 1-5-5-5) 16383x65535 -> AR12 (16-bit ARGB 4-4-4-4) 16383x65535: FAIL
        Video Capture: Captured 8 buffers
        AR15 (16-bit ARGB 1-5-5-5) 240x320 -> BA24 (32-bit ARGB 8-8-8-8) 240x320: OK
        Video Capture: Captured 8 buffers
        AR15 (16-bit ARGB 1-5-5-5) 240x320 -> RGB3 (24-bit RGB 8-8-8) 240x320: OK
        Video Capture: Captured 8 buffers
        AR15 (16-bit ARGB 1-5-5-5) 240x320 -> RGBP (16-bit RGB 5-6-5) 240x320: OK
        Video Capture: Captured 8 buffers
        AR15 (16-bit ARGB 1-5-5-5) 240x320 -> AR15 (16-bit ARGB 1-5-5-5) 240x320: OK
        Video Capture: Captured 8 buffers
        AR15 (16-bit ARGB 1-5-5-5) 240x320 -> AR12 (16-bit ARGB 4-4-4-4) 240x320: OK
        Video Capture: Captured 8 buffers
        AR12 (16-bit ARGB 4-4-4-4) 1x1 -> BA24 (32-bit ARGB 8-8-8-8) 1x1: OK
        Video Capture: Captured 8 buffers
        AR12 (16-bit ARGB 4-4-4-4) 1x1 -> RGB3 (24-bit RGB 8-8-8) 1x1: OK
        Video Capture: Captured 8 buffers
        AR12 (16-bit ARGB 4-4-4-4) 1x1 -> RGBP (16-bit RGB 5-6-5) 1x1: OK
        Video Capture: Captured 8 buffers
        AR12 (16-bit ARGB 4-4-4-4) 1x1 -> AR15 (16-bit ARGB 1-5-5-5) 1x1: OK
        Video Capture: Captured 8 buffers
        AR12 (16-bit ARGB 4-4-4-4) 1x1 -> AR12 (16-bit ARGB[4- -4-4) 1x1: OK
 106.636958] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        AR12 (16-bit ARGB[4-4-4-4) 16383x65535 -> BA24 (32-bit ARGB 8 8-8-8) 16383x65535:  [1;31mFAIL
107.578517] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        AR12 (16-bit ARGB 4-4-[  ) 16383x65535 1> R0B3 (24-bit RGB 8-8-88 16383x65535: FAIL
.527898] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        AR12 (16-bit ARGB 4-4-4-4) 16383x65535 -> RGBP (16-bit RGB 5-6-5) 16383x65535: FAIL
[  109.495892] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        AR12 (16-bit ARGB 4-4-4-4) 1638[x65535 -> AR15 (16-bit ARGB 1-5-5-5) 16383x6 535: FAIL
110.449341] stm-dma2d 4002b000.dma2d: dma_alloc_coherent of size 2147323904 failed
                fail: v4l2-test-buffers.cpp(1300): q.reqbufs(node, 2)
        AR12 (16-bit ARGB 4-4-4-4) 16383x65535 -> AR12 (16-bit ARGB 4-4-4-4) 16383x65535: FAIL
        Video Capture: Captured 8 buffers
        AR12 (16-bit ARGB 4-4-4-4) 240x320 -> BA24 (32-bit ARGB 8-8-8-8) 240x320: OK
        Video Capture: Captured 8 buffers
        AR12 (16-bit ARGB 4-4-4-4) 240x320 -> RGB3 (24-bit RGB 8-8-8) 240x320: OK
        Video Capture: Captured 8 buffers
        AR12 (16-bit ARGB 4-4-4-4) 240x320 -> RGBP (16-bit RGB 5-6-5) 240x320: OK
        Video Capture: Captured 8 buffers
        AR12 (16-bit ARGB 4-4-4-4) 240x320 -> AR15 (16-bit ARGB 1-5-5-5) 240x320: OK
        Video Capture: Captured 8 buffers
        AR12 (16-bit ARGB 4-4-4-4) 240x320 -> AR12 (16-bit ARGB 4-4-4-4) 240x320: OK
Total for stm-dma2d device /dev/video0: 127, Succeeded: 102, Failed: 25, Warnings: 0

[1] Done                   ./v4l2-compliance -s -f -d /dev/video0
*** BLURB HERE ***

Dillon Min (9):
  media: admin-guide: add stm32-dma2d description
  media: dt-bindings: media: add document for STM32 DMA2d bindings
  clk: stm32: Fix ltdc's clock turn off by clk_disable_unused() after
    kernel startup
  ARM: dts: stm32: Enable DMA2D support on STM32F429 MCU
  ARM: dts: stm32: Enable DMA2D on STM32F469-DISCO board
  media: v4l2-mem2mem: add v4l2_m2m_get_unmapped_area for no-mmu
    platform
  media: docs: add doc for the stm32 dma2d driver
  media: v4l: uapi: Add user control base for stm32 dma2d controls
  media: stm32-dma2d: STM32 DMA2D driver

 .../admin-guide/media/platform-cardlist.rst        |   1 +
 .../devicetree/bindings/media/st,stm32-dma2d.yaml  |  71 ++
 .../userspace-api/media/drivers/index.rst          |   1 +
 .../userspace-api/media/drivers/stm32-uapi.rst     |  22 +
 arch/arm/boot/dts/stm32f429.dtsi                   |  10 +
 arch/arm/boot/dts/stm32f469-disco.dts              |   4 +
 drivers/clk/clk-stm32f4.c                          |   7 +-
 drivers/media/platform/Kconfig                     |   9 +
 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         | 796 +++++++++++++++++++++
 drivers/media/platform/stm32/dma2d/dma2d.h         | 136 ++++
 drivers/media/v4l2-core/v4l2-mem2mem.c             |  21 +
 include/media/v4l2-mem2mem.h                       |   5 +
 include/uapi/linux/stm32-media.h                   |  12 +
 include/uapi/linux/v4l2-controls.h                 |   5 +
 18 files changed, 1355 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/st,stm32-dma2d.yaml
 create mode 100644 Documentation/userspace-api/media/drivers/stm32-uapi.rst
 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
 create mode 100644 include/uapi/linux/stm32-media.h

-- 
2.7.4