This patchset adds basic support for the Qualcomm Camera Subsystem found
on Qualcomm MSM8916 and APQ8016 processors.
The driver implements V4L2, Media controller and V4L2 subdev interfaces.
Camera sensor using V4L2 subdev interface in the kernel is supported.
The driver is implemented using as a reference the Qualcomm Camera
Subsystem driver for Android as found in Code Aurora [1].
The driver is tested on Dragonboard 410C (APQ8016) with one and two
OV5645 camera sensors. media-ctl [2] and yavta [3] applications were
used for testing. Also Gstreamer 1.10.4 with v4l2src plugin is supported.
More information is present in the document added by the third patch.
-------------------------------------------------------------------------------
Patchset Changelog:
Version 2:
- patches 01-10 are updated from v1 following the review received and bugs
and limitaitons found after v1 was posted. The updates include:
- return buffers on unsuccessful stream on;
- fill device capabilities in struct video_device;
- simplify v4l2 file handle usage - no custom struct for file handle;
- use vb2_fop_poll and vb2_fop_mmap v4l2 file operations;
- add support for read/write I/O;
- add support for DMABUF streaming I/O;
- add support for EXPBUF and PREPARE_BUF ioctl;
- avoid a race condition between device unbind and userspace access
to the video node;
- use non-contiguous memory for video buffers;
- switch to V4L2 multi-planar API;
- add useful error messages in case of an overflow in ISPIF;
- other small and style fixes.
- patches 11-19 are new (they were not ready/posted with v1). I'm including
these in this patchset as they add valuable features and may be desired
for a real world usage of the driver.
-------------------------------------------------------------------------------
The patchset depends on:
v4l: Add packed Bayer raw12 pixel formats [4]
-------------------------------------------------------------------------------
V4L2 compliance test result:
$ v4l2-compliance -s -d /dev/video0
v4l2-compliance SHA : ce237eefc1f6dafafc0e1fe3a5fd9f075d3fd066
Driver Info:
Driver name : qcom-camss
Card type : Qualcomm Camera Subsystem
Bus info : platform:1b0ac00.camss
Driver version: 4.9.27
Capabilities : 0x85201000
Video Capture Multiplanar
Read/Write
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x05201000
Video Capture Multiplanar
Read/Write
Streaming
Extended Pix Format
Compliance test for device /dev/video0 (not using libv4l2):
Required ioctls:
test VIDIOC_QUERYCAP: OK
Allow for multiple opens:
test second video 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
test VIDIOC_G/S_AUDIO: OK (Not Supported)
Inputs: 1 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)
Test input 0:
Control ioctls:
test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK (Not Supported)
test VIDIOC_QUERYCTRL: OK (Not Supported)
test VIDIOC_G/S_CTRL: OK (Not Supported)
test VIDIOC_G/S/TRY_EXT_CTRLS: OK (Not Supported)
test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK (Not Supported)
test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
Standard Controls: 0 Private Controls: 0
Format ioctls:
test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
test VIDIOC_G/S_PARM: OK (Not Supported)
test VIDIOC_G_FBUF: OK (Not Supported)
test VIDIOC_G_FMT: OK
test VIDIOC_TRY_FMT: OK
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 (Not Supported)
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 input 0:
Streaming ioctls:
test read/write: OK
test MMAP: OK
test USERPTR: OK (Not Supported)
test DMABUF: Cannot test, specify --expbuf-device
Total: 46, Succeeded: 46, Failed: 0, Warnings: 0
-------------------------------------------------------------------------------
[1] https://source.codeaurora.org/quic/la/kernel/msm-3.10/
[2] https://git.linuxtv.org//v4l-utils.git
[3] http://git.ideasonboard.org/yavta.git
[4] https://git.linuxtv.org/sailus/media_tree.git/commit/?h=packed12-postponed&id=549c02da6eed8dc4566632a9af9233bf99ba99d8
Todor Tomov (19):
doc: DT: camss: Binding document for Qualcomm Camera subsystem driver
MAINTAINERS: Add Qualcomm Camera subsystem driver
doc: media/v4l-drivers: Add Qualcomm Camera Subsystem driver document
media: camss: Add CSIPHY files
media: camss: Add CSID files
media: camss: Add ISPIF files
media: camss: Add VFE files
media: camss: Add files which handle the video device nodes
media: camms: Add core files
media: camss: Enable building
camss: vfe: Format conversion support using PIX interface
doc: media/v4l-drivers: Qualcomm Camera Subsystem - PIX Interface
camss: vfe: Support for frame padding
camss: vfe: Add interface for scaling
camss: vfe: Configure scaler module in VFE
camss: vfe: Add interface for cropping
camss: vfe: Configure crop module in VFE
doc: media/v4l-drivers: Qualcomm Camera Subsystem - Scale and crop
camss: Use optimal clock frequency rates
.../devicetree/bindings/media/qcom,camss.txt | 196 ++
Documentation/media/v4l-drivers/qcom_camss.rst | 157 +
MAINTAINERS | 8 +
drivers/media/platform/Kconfig | 6 +
drivers/media/platform/Makefile | 2 +
drivers/media/platform/qcom/camss-8x16/Makefile | 11 +
drivers/media/platform/qcom/camss-8x16/camss.c | 724 +++++
drivers/media/platform/qcom/camss-8x16/camss.h | 105 +
drivers/media/platform/qcom/camss-8x16/csid.c | 1141 ++++++++
drivers/media/platform/qcom/camss-8x16/csid.h | 82 +
drivers/media/platform/qcom/camss-8x16/csiphy.c | 821 ++++++
drivers/media/platform/qcom/camss-8x16/csiphy.h | 77 +
drivers/media/platform/qcom/camss-8x16/ispif.c | 1137 ++++++++
drivers/media/platform/qcom/camss-8x16/ispif.h | 85 +
drivers/media/platform/qcom/camss-8x16/vfe.c | 3046 ++++++++++++++++++++
drivers/media/platform/qcom/camss-8x16/vfe.h | 123 +
drivers/media/platform/qcom/camss-8x16/video.c | 842 ++++++
drivers/media/platform/qcom/camss-8x16/video.h | 72 +
18 files changed, 8635 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/qcom,camss.txt
create mode 100644 Documentation/media/v4l-drivers/qcom_camss.rst
create mode 100644 drivers/media/platform/qcom/camss-8x16/Makefile
create mode 100644 drivers/media/platform/qcom/camss-8x16/camss.c
create mode 100644 drivers/media/platform/qcom/camss-8x16/camss.h
create mode 100644 drivers/media/platform/qcom/camss-8x16/csid.c
create mode 100644 drivers/media/platform/qcom/camss-8x16/csid.h
create mode 100644 drivers/media/platform/qcom/camss-8x16/csiphy.c
create mode 100644 drivers/media/platform/qcom/camss-8x16/csiphy.h
create mode 100644 drivers/media/platform/qcom/camss-8x16/ispif.c
create mode 100644 drivers/media/platform/qcom/camss-8x16/ispif.h
create mode 100644 drivers/media/platform/qcom/camss-8x16/vfe.c
create mode 100644 drivers/media/platform/qcom/camss-8x16/vfe.h
create mode 100644 drivers/media/platform/qcom/camss-8x16/video.c
create mode 100644 drivers/media/platform/qcom/camss-8x16/video.h
--
1.9.1
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