forked from Minki/linux
media: via-camera: fix v4l2-compliance fails
The patch fixes various v4l2-compliance failures: - missing support for control events - support of s/g_std even though this doesn't apply to a webcam - missing colorspace reporting - bus_info wasn't filled in by VIDIOC_QUERYCAP - parm.capture.readbuffers was overridden with wrong value - viacam_enum_framesizes/intervals didn't check the arguments Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
fa564e9025
commit
ec8b22b4bd
@ -18,6 +18,7 @@
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-image-sizes.h>
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#include <media/i2c/ov7670.h>
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#include <media/videobuf-dma-sg.h>
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@ -778,7 +779,7 @@ static __poll_t viacam_poll(struct file *filp, struct poll_table_struct *pt)
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{
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struct via_camera *cam = video_drvdata(filp);
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return videobuf_poll_stream(filp, &cam->vb_queue, pt);
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return v4l2_ctrl_poll(filp, pt) | videobuf_poll_stream(filp, &cam->vb_queue, pt);
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}
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@ -816,7 +817,6 @@ static int viacam_enum_input(struct file *filp, void *priv,
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return -EINVAL;
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input->type = V4L2_INPUT_TYPE_CAMERA;
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input->std = V4L2_STD_ALL; /* Not sure what should go here */
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strscpy(input->name, "Camera", sizeof(input->name));
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return 0;
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}
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@ -834,17 +834,6 @@ static int viacam_s_input(struct file *filp, void *priv, unsigned int i)
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return 0;
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}
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static int viacam_s_std(struct file *filp, void *priv, v4l2_std_id std)
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{
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return 0;
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}
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static int viacam_g_std(struct file *filp, void *priv, v4l2_std_id *std)
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{
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*std = V4L2_STD_NTSC_M;
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return 0;
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}
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/*
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* Video format stuff. Here is our default format until
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* user space messes with things.
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@ -856,6 +845,7 @@ static const struct v4l2_pix_format viacam_def_pix_format = {
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.field = V4L2_FIELD_NONE,
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.bytesperline = VGA_WIDTH * 2,
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.sizeimage = VGA_WIDTH * VGA_HEIGHT * 2,
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.colorspace = V4L2_COLORSPACE_SRGB,
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};
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static const u32 via_def_mbus_code = MEDIA_BUS_FMT_YUYV8_2X8;
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@ -900,6 +890,10 @@ static void viacam_fmt_post(struct v4l2_pix_format *userfmt,
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userfmt->field = sensorfmt->field;
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userfmt->bytesperline = 2 * userfmt->width;
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userfmt->sizeimage = userfmt->bytesperline * userfmt->height;
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userfmt->colorspace = sensorfmt->colorspace;
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userfmt->ycbcr_enc = sensorfmt->ycbcr_enc;
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userfmt->quantization = sensorfmt->quantization;
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userfmt->xfer_func = sensorfmt->xfer_func;
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}
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@ -995,6 +989,7 @@ static int viacam_querycap(struct file *filp, void *priv,
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{
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strscpy(cap->driver, "via-camera", sizeof(cap->driver));
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strscpy(cap->card, "via-camera", sizeof(cap->card));
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strscpy(cap->bus_info, "platform:via-camera", sizeof(cap->bus_info));
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return 0;
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}
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@ -1119,7 +1114,6 @@ static int viacam_g_parm(struct file *filp, void *priv,
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mutex_lock(&cam->lock);
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ret = v4l2_g_parm_cap(video_devdata(filp), cam->sensor, parm);
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mutex_unlock(&cam->lock);
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parm->parm.capture.readbuffers = cam->n_cap_bufs;
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return ret;
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}
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@ -1132,15 +1126,21 @@ static int viacam_s_parm(struct file *filp, void *priv,
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mutex_lock(&cam->lock);
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ret = v4l2_s_parm_cap(video_devdata(filp), cam->sensor, parm);
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mutex_unlock(&cam->lock);
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parm->parm.capture.readbuffers = cam->n_cap_bufs;
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return ret;
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}
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static int viacam_enum_framesizes(struct file *filp, void *priv,
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struct v4l2_frmsizeenum *sizes)
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{
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unsigned int i;
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if (sizes->index != 0)
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return -EINVAL;
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for (i = 0; i < N_VIA_FMTS; i++)
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if (sizes->pixel_format == via_formats[i].pixelformat)
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break;
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if (i >= N_VIA_FMTS)
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return -EINVAL;
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sizes->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
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sizes->stepwise.min_width = QCIF_WIDTH;
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sizes->stepwise.min_height = QCIF_HEIGHT;
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@ -1161,8 +1161,17 @@ static int viacam_enum_frameintervals(struct file *filp, void *priv,
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.height = cam->sensor_format.height,
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.which = V4L2_SUBDEV_FORMAT_ACTIVE,
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};
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unsigned int i;
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int ret;
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for (i = 0; i < N_VIA_FMTS; i++)
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if (interval->pixel_format == via_formats[i].pixelformat)
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break;
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if (i >= N_VIA_FMTS)
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return -EINVAL;
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if (interval->width < QCIF_WIDTH || interval->width > VGA_WIDTH ||
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interval->height < QCIF_HEIGHT || interval->height > VGA_HEIGHT)
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return -EINVAL;
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mutex_lock(&cam->lock);
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ret = sensor_call(cam, pad, enum_frame_interval, NULL, &fie);
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mutex_unlock(&cam->lock);
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@ -1179,8 +1188,6 @@ static const struct v4l2_ioctl_ops viacam_ioctl_ops = {
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.vidioc_enum_input = viacam_enum_input,
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.vidioc_g_input = viacam_g_input,
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.vidioc_s_input = viacam_s_input,
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.vidioc_s_std = viacam_s_std,
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.vidioc_g_std = viacam_g_std,
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.vidioc_enum_fmt_vid_cap = viacam_enum_fmt_vid_cap,
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.vidioc_try_fmt_vid_cap = viacam_try_fmt_vid_cap,
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.vidioc_g_fmt_vid_cap = viacam_g_fmt_vid_cap,
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@ -1196,6 +1203,8 @@ static const struct v4l2_ioctl_ops viacam_ioctl_ops = {
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.vidioc_s_parm = viacam_s_parm,
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.vidioc_enum_framesizes = viacam_enum_framesizes,
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.vidioc_enum_frameintervals = viacam_enum_frameintervals,
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.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
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.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
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};
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/*----------------------------------------------------------------------------*/
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@ -1267,7 +1276,6 @@ static struct viafb_pm_hooks viacam_pm_hooks = {
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static const struct video_device viacam_v4l_template = {
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.name = "via-camera",
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.minor = -1,
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.tvnorms = V4L2_STD_NTSC_M,
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.fops = &viacam_fops,
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.ioctl_ops = &viacam_ioctl_ops,
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.release = video_device_release_empty, /* Check this */
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