2018年10月1日(月) 18:41 Hans Verkuil <hverkuil@xxxxxxxxx>: > > On 09/23/2018 06:34 PM, Akinobu Mita wrote: > > This patchset adds support for changing frame interval and runtime PM for > > video-i2c driver. This also adds an helper macro to v4l2 common > > internal API that is used to to find a suitable frame interval. > > > > There are a couple of unrelated changes that are included for simplifying > > driver initialization code and register accesses. > > > > * v2 > > - Add Acked-by and Reviewed-by tags > > - Update commit log to clarify the use after free > > - Add thermistor and termperature register address definisions > > - Stop adding v4l2_find_closest_fract() in v4l2 common internal API > > - Add V4L2_FRACT_COMPARE() macro in v4l2 common internal API > > - Use V4L2_FRACT_COMPARE() to find suitable frame interval instead of > > v4l2_find_closest_fract() > > 1) What's wrong with v4l2_find_closest_fract()? My implementation of v4l2_find_closest_fract() in v1 didn't care about u32 overflow. Even if the overflow problem is fixed, there are only a few drivers (video-i2c and vivid) that can make use of it. So I feel it adds more lines of code than it can remove. > 2) Please test this with the latest v4l2-compliance: I recently improved > the S_PARM checks, so I want to make sure this driver passes those tests. v4l2-compliance SHA: 7bde5ef172bd4a09b9544788ba9c5dbb1aa9994a, 32 bits Compliance test for device /dev/video2: Driver Info: Driver name : video-i2c Card type : I2C 1-104 Transport Video Bus info : I2C:1-104 Driver version : 4.19.0 Capabilities : 0x85200001 Video Capture Read/Write Streaming Extended Pix Format Device Capabilities Device Caps : 0x05200001 Video Capture Read/Write Streaming Extended Pix Format Required ioctls: test VIDIOC_QUERYCAP: OK Allow for multiple opens: test second /dev/video2 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 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) Control ioctls (Input 0): 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 (Input 0): test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK test VIDIOC_G/S_PARM: OK 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 (Input 0): 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 (Input 0): test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK test VIDIOC_EXPBUF: OK (Not Supported) Total: 43, Succeeded: 43, Failed: 0, Warnings: 0
