SOLVED VEYE imx385 驱动问题+

flaty

@veye_xumm 我也得觉得不对，IMX385 veye系列的最新的驱动是哪个，是1.7下的吗

veye_xumm

@flaty 驱动源码你直接用github最新的就行。

flaty

@veye_xumm 编译错误我把信息发给您看一下，是驱动里面的结构体
CC drivers/media/i2c/veyecam2m.o
drivers/media/i2c/veyecam2m.c: In function 'veyecam2m_g_mbus_config':
drivers/media/i2c/veyecam2m.c:419:24: error: 'V4L2_MBUS_CSI2' undeclared (first use in this function); did you mean 'V4L2_MBUS_CSI1'?
419 | config->type = V4L2_MBUS_CSI2;
| ^~
| V4L2_MBUS_CSI1
drivers/media/i2c/veyecam2m.c:419:24: note: each undeclared identifier is reported only once for each function it appears in
drivers/media/i2c/veyecam2m.c: At top level:
drivers/media/i2c/veyecam2m.c:898:3: error: 'const struct v4l2_subdev_video_ops' has no member named 'g_mbus_config'
898 | .g_mbus_config = veyecam2m_g_mbus_config,
| ^
drivers/media/i2c/veyecam2m.c:898:19: error: initialization of 'int ()(struct v4l2_subdev , struct v4l2_subdev_frame_interval )' from incompatible pointer type 'int ()(struct v4l2_subdev , struct v4l2_mbus_config )' [-Werror=incompatible-pointer-types]
898 | .g_mbus_config = veyecam2m_g_mbus_config,
| ^~~~~~~~~~~
drivers/media/i2c/veyecam2m.c:898:19: note: (near initialization for 'veyecam2m_video_ops.s_frame_interval')
cc1: all warnings being treated as errors
make[4]: *** [scripts/Makefile.build:273：drivers/media/i2c/veyecam2m.o] 错误 1

一下是内核配置
============Start building kernel============
TARGET_ARCH =arm64
TARGET_KERNEL_CONFIG =rockchip_linux_defconfig
TARGET_KERNEL_DTS =roc-rk3588s-pc-mipi101-BSD1218-A101KL68
TARGET_KERNEL_CONFIG_FRAGMENT =rk3588_linux.config firefly-linux.config

flaty

[0_1756784079945_log.zip](正在上传 100%) 这个是完整的编译log，您看一下，我使用firefly最新的SDK 进行的编译，采用5.10的内核

veye_xumm

@flaty
参见代码的注释，你的内核缺少这个接口，需要注掉这个函数。

flaty

@veye_xumm 您这边适配过 SDK1.4.0G 这个版本吗 firefly

veye_xumm

@flaty 可以的。

flaty

@veye_xumm dts 参考这个可以吗？https://github.com/veyeimaging/rk35xx_firefly/tree/main/linux/drivers/rk358x

veye_xumm

@flaty 就是这个。

flaty

@veye_xumm zhge dsi的头您看有问题吗检测不到相机，
#include "roc-rk3588s-pc.dtsi"

//#include "rk3588-roc-pc-cam-8ms1m.dtsi"

//open this line to enable fpdlink-III link
//#include "rk3588-roc-pc-fpdlink-90ub954.dtsi"

//open this line to enable v-by-one hs link
#include "rk3588-roc-pc-vbyone-overlay.dtsi"

#include "rk3588-roc-pc-cam-veyecam2m.dtsi"
#include "rk3588-roc-pc-cam-veyemvcam.dtsi"

#include "roc-rk3588s-pc-v10-diff.dtsi"
#define WHICHDSI 0 /* dsi0 = 0,dsi1 = 1*/

veye_xumm

@flaty
正常来说，你只要在这个文件的基础上做如下修改：
//open this line to enable v-by-one hs link
//#include "rk3588-roc-pc-vbyone-overlay.dtsi"
#include "rk3588-roc-pc-cam-veyecam2m.dtsi"
//#include "rk3588-roc-pc-cam-veyemvcam.dtsi"

flaty

@veye_xumm 我再试一下吧，不知道咋回事，，，编译什么都没问题

flaty

@veye_xumm
[ 7.047946] veyecam2m 7-003b: veye camera driver version: 00.01.01
[ 7.047980] veyecam2m 7-003b: Failed to get power-gpios, maybe no use
[ 7.048101] veyecam2m 7-003b: supply avdd not found, using dummy regulator
[ 7.048213] veyecam2m 7-003b: supply dovdd not found, using dummy regulator
[ 7.048278] veyecam2m 7-003b: supply dvdd not found, using dummy regulator
[ 7.048303] veyecam2m 7-003b: could not get default pinstate
[ 7.048309] veyecam2m 7-003b: could not get sleep pinstate
[ 7.048320] veyecam2m 7-003b: Success to get veyecam2m endpoint data lanes, dts uses 2 lanes
[ 7.170539] veyecam2m 7-003b: camera id is veyecam2m
[ 7.173503] veyecam2m 7-003b: sensor is IMX385
[ 7.173564] veyecam2m 7-003b: board type is ONE board
[ 7.219705] rockchip-csi2-dphy csi2-dphy0: dphy0 matches m00_b_veyecam2m 7-003b:bus type 5
以上电源的错误，但是ls /dev/video0 可以看到设备了

veye_xumm

@flaty 这些报错都不用管。我们的模组不需要这些供电。

flaty

@veye_xumm 测试出图像了，搞定了，谢谢

veye_xumm

@flaty 不客气。

flaty

@veye_xumm 现在遇到个新的问题，我不知道是板子硬件支持，我是用DMABUF 作为V4L2的qbuf, 但是返回错误 Failed to queue buffer: Invalid argument，您看一下我这部分代码，是不是该驱动支持，
//将缓冲区注册到摄像头
struct v4l2_buffer buf={0};
struct v4l2_plane planes[1]={0};
buf.index =0;
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
buf.memory = V4L2_MEMORY_DMABUF;
buf.length = 1;
buf.m.planes = planes;
planes[0].m.fd = frame_buffers[i].dmabuf_fd;
planes[0].length =buffer_size;

    if (ioctl(cam_fd, VIDIOC_QBUF, &buf) < 0) {
        perror("Failed to queue buffer");
        return -1;
    }

veye_xumm

@flaty 建议您参考一下yavta的源码。git clone https://github.com/veyeimaging/yavta.git

flaty

@veye_xumm 我看了那个源码内存采用普通的内存，我希望的是用 drm 或dmaheap 的，这样可以实现零copy

veye_xumm

@flaty 我的理解中，相机驱动并不涉及到BUFF模式的限制。实际上数据的收取和防止到内存是rk的mipi接收单元的驱动所决定的。
下面是网上插到的信息，希望能有帮助。

从你贴的代码来看，报错 Failed to queue buffer: Invalid argument（EINVAL）通常意味着结构体成员设置有问题，或者驱动不支持 DMABUF 模式。结合你写的代码，我帮你逐条排查一下：

1. `v4l2_buffer` 初始化问题

你这里写的是：

struct v4l2_buffer buf={0};
struct v4l2_plane planes[1]={0};

这是对的，但要注意 buf.length 必须和 planes 数组元素数量一致，并且 buf.m.planes 不能为空。

2. `buf` 关键字段设置

你代码里：

buf.index = 0;
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
buf.memory = V4L2_MEMORY_DMABUF;
buf.length = 1;
buf.m.planes = planes;

buf.type 用 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE 是对的（说明驱动是 multiplanar 类型）。
buf.memory 设置成 DMABUF 正确。
buf.index 不是 0 就行，它必须是你在 VIDIOC_REQBUFS 时分配的 buffer 数量里的一个合法索引。比如如果你 req.count = 4，那么只能用 0..3。

3. plane 字段设置

planes[0].m.fd = frame_buffers[i].dmabuf_fd;
planes[0].length = buffer_size;

问题可能出在这里：

planes[0].m.fd：必须是 dma-buf 的有效 fd。
planes[0].length：应该是该 plane 的大小，但 通常驱动并不依赖这个值。有些驱动要求设置 bytesused，即：

planes[0].bytesused = buffer_size;

如果 bytesused 没设，驱动可能直接返回 EINVAL。

4. 建议的正确写法

试着改成这样：

struct v4l2_buffer buf;
struct v4l2_plane planes[VIDEO_MAX_PLANES];  // 通常 >= 1
memset(&buf, 0, sizeof(buf));
memset(planes, 0, sizeof(planes));

buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
buf.memory = V4L2_MEMORY_DMABUF;
buf.index = i;                   // 循环里的 buffer 索引
buf.length = 1;                  // plane 数量
buf.m.planes = planes;

planes[0].m.fd = frame_buffers[i].dmabuf_fd;
planes[0].length = buffer_size;   // plane 总大小
planes[0].bytesused = buffer_size; // 必须加上

5. 确认驱动是否支持 DMABUF

不是所有 V4L2 驱动都支持 V4L2_MEMORY_DMABUF。你可以用下面的方法确认：

v4l2-ctl -d /dev/video0 --querycap

如果 ioctl 里不支持 DMABUF，就算代码写对了也会 EINVAL。
有些驱动只支持 MMAP，那就得用 V4L2_MEMORY_MMAP。

建议：先在 QBUF 前打印出 buf 和 planes[0] 的值，确认 index、fd、bytesused 都合理。