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path: root/drivers/media/usb/uvc/uvc_v4l2.c
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Diffstat (limited to 'drivers/media/usb/uvc/uvc_v4l2.c')
-rw-r--r--drivers/media/usb/uvc/uvc_v4l2.c128
1 files changed, 51 insertions, 77 deletions
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 160f9cf6e6db..9e4a251eca88 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -329,14 +329,12 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
* developers test their webcams with the Linux driver as well as with
* the Windows driver).
*/
- mutex_lock(&stream->mutex);
if (stream->dev->quirks & UVC_QUIRK_PROBE_EXTRAFIELDS)
probe->dwMaxVideoFrameSize =
stream->ctrl.dwMaxVideoFrameSize;
/* Probe the device. */
ret = uvc_probe_video(stream, probe);
- mutex_unlock(&stream->mutex);
if (ret < 0)
return ret;
@@ -388,26 +386,22 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
return ret;
}
-static int uvc_ioctl_g_fmt(struct file *file, void *fh,
+static int uvc_ioctl_g_fmt(struct file *file, void *priv,
struct v4l2_format *fmt)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
const struct uvc_format *format;
const struct uvc_frame *frame;
- int ret = 0;
if (fmt->type != stream->type)
return -EINVAL;
- mutex_lock(&stream->mutex);
format = stream->cur_format;
frame = stream->cur_frame;
- if (format == NULL || frame == NULL) {
- ret = -EINVAL;
- goto done;
- }
+ if (!format || !frame)
+ return -EINVAL;
fmt->fmt.pix.pixelformat = format->fcc;
fmt->fmt.pix.width = frame->wWidth;
@@ -419,15 +413,13 @@ static int uvc_ioctl_g_fmt(struct file *file, void *fh,
fmt->fmt.pix.xfer_func = format->xfer_func;
fmt->fmt.pix.ycbcr_enc = format->ycbcr_enc;
-done:
- mutex_unlock(&stream->mutex);
- return ret;
+ return 0;
}
-static int uvc_ioctl_s_fmt(struct file *file, void *fh,
+static int uvc_ioctl_s_fmt(struct file *file, void *priv,
struct v4l2_format *fmt)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
struct uvc_streaming_control probe;
const struct uvc_format *format;
@@ -441,35 +433,27 @@ static int uvc_ioctl_s_fmt(struct file *file, void *fh,
if (ret < 0)
return ret;
- mutex_lock(&stream->mutex);
- if (vb2_is_busy(&stream->queue.queue)) {
- ret = -EBUSY;
- goto done;
- }
+ if (vb2_is_busy(&stream->queue.queue))
+ return -EBUSY;
stream->ctrl = probe;
stream->cur_format = format;
stream->cur_frame = frame;
-done:
- mutex_unlock(&stream->mutex);
- return ret;
+ return 0;
}
-static int uvc_ioctl_g_parm(struct file *file, void *fh,
+static int uvc_ioctl_g_parm(struct file *file, void *priv,
struct v4l2_streamparm *parm)
{
u32 numerator, denominator;
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
if (parm->type != stream->type)
return -EINVAL;
- mutex_lock(&stream->mutex);
numerator = stream->ctrl.dwFrameInterval;
- mutex_unlock(&stream->mutex);
-
denominator = 10000000;
v4l2_simplify_fraction(&numerator, &denominator, 8, 333);
@@ -493,10 +477,10 @@ static int uvc_ioctl_g_parm(struct file *file, void *fh,
return 0;
}
-static int uvc_ioctl_s_parm(struct file *file, void *fh,
+static int uvc_ioctl_s_parm(struct file *file, void *priv,
struct v4l2_streamparm *parm)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
struct uvc_streaming_control probe;
struct v4l2_fract timeperframe;
@@ -519,12 +503,8 @@ static int uvc_ioctl_s_parm(struct file *file, void *fh,
uvc_dbg(stream->dev, FORMAT, "Setting frame interval to %u/%u (%u)\n",
timeperframe.numerator, timeperframe.denominator, interval);
- mutex_lock(&stream->mutex);
-
- if (uvc_queue_streaming(&stream->queue)) {
- mutex_unlock(&stream->mutex);
+ if (uvc_queue_streaming(&stream->queue))
return -EBUSY;
- }
format = stream->cur_format;
frame = stream->cur_frame;
@@ -556,14 +536,11 @@ static int uvc_ioctl_s_parm(struct file *file, void *fh,
/* Probe the device with the new settings. */
ret = uvc_probe_video(stream, &probe);
- if (ret < 0) {
- mutex_unlock(&stream->mutex);
+ if (ret < 0)
return ret;
- }
stream->ctrl = probe;
stream->cur_frame = frame;
- mutex_unlock(&stream->mutex);
/* Return the actual frame period. */
timeperframe.numerator = probe.dwFrameInterval;
@@ -599,18 +576,17 @@ static int uvc_v4l2_open(struct file *file)
if (!handle)
return -ENOMEM;
- v4l2_fh_init(&handle->vfh, &stream->vdev);
- v4l2_fh_add(&handle->vfh);
+ v4l2_fh_init(&handle->vfh, &stream->queue.vdev);
+ v4l2_fh_add(&handle->vfh, file);
handle->chain = stream->chain;
handle->stream = stream;
- file->private_data = handle;
return 0;
}
static int uvc_v4l2_release(struct file *file)
{
- struct uvc_fh *handle = file->private_data;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
@@ -623,10 +599,10 @@ static int uvc_v4l2_release(struct file *file)
return 0;
}
-static int uvc_ioctl_querycap(struct file *file, void *fh,
+static int uvc_ioctl_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
- struct uvc_fh *handle = file->private_data;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_video_chain *chain = handle->chain;
struct uvc_streaming *stream = handle->stream;
@@ -639,10 +615,10 @@ static int uvc_ioctl_querycap(struct file *file, void *fh,
return 0;
}
-static int uvc_ioctl_enum_fmt(struct file *file, void *fh,
+static int uvc_ioctl_enum_fmt(struct file *file, void *priv,
struct v4l2_fmtdesc *fmt)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
enum v4l2_buf_type type = fmt->type;
const struct uvc_format *format;
@@ -663,20 +639,20 @@ static int uvc_ioctl_enum_fmt(struct file *file, void *fh,
return 0;
}
-static int uvc_ioctl_try_fmt(struct file *file, void *fh,
+static int uvc_ioctl_try_fmt(struct file *file, void *priv,
struct v4l2_format *fmt)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
struct uvc_streaming_control probe;
return uvc_v4l2_try_format(stream, fmt, &probe, NULL, NULL);
}
-static int uvc_ioctl_enum_input(struct file *file, void *fh,
+static int uvc_ioctl_enum_input(struct file *file, void *priv,
struct v4l2_input *input)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_video_chain *chain = handle->chain;
const struct uvc_entity *selector = chain->selector;
struct uvc_entity *iterm = NULL;
@@ -716,9 +692,9 @@ static int uvc_ioctl_enum_input(struct file *file, void *fh,
return 0;
}
-static int uvc_ioctl_g_input(struct file *file, void *fh, unsigned int *input)
+static int uvc_ioctl_g_input(struct file *file, void *priv, unsigned int *input)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_video_chain *chain = handle->chain;
u8 *buf;
int ret;
@@ -744,9 +720,9 @@ static int uvc_ioctl_g_input(struct file *file, void *fh, unsigned int *input)
return ret;
}
-static int uvc_ioctl_s_input(struct file *file, void *fh, unsigned int input)
+static int uvc_ioctl_s_input(struct file *file, void *priv, unsigned int input)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
struct uvc_video_chain *chain = handle->chain;
u8 *buf;
@@ -778,10 +754,10 @@ static int uvc_ioctl_s_input(struct file *file, void *fh, unsigned int input)
return ret;
}
-static int uvc_ioctl_query_ext_ctrl(struct file *file, void *fh,
+static int uvc_ioctl_query_ext_ctrl(struct file *file, void *priv,
struct v4l2_query_ext_ctrl *qec)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_video_chain *chain = handle->chain;
return uvc_query_v4l2_ctrl(chain, qec);
@@ -806,10 +782,10 @@ static int uvc_ctrl_check_access(struct uvc_video_chain *chain,
return ret;
}
-static int uvc_ioctl_g_ext_ctrls(struct file *file, void *fh,
+static int uvc_ioctl_g_ext_ctrls(struct file *file, void *priv,
struct v4l2_ext_controls *ctrls)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_video_chain *chain = handle->chain;
struct v4l2_ext_control *ctrl = ctrls->controls;
unsigned int i;
@@ -890,35 +866,35 @@ static int uvc_ioctl_s_try_ext_ctrls(struct uvc_fh *handle,
return uvc_ctrl_rollback(handle);
}
-static int uvc_ioctl_s_ext_ctrls(struct file *file, void *fh,
+static int uvc_ioctl_s_ext_ctrls(struct file *file, void *priv,
struct v4l2_ext_controls *ctrls)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
return uvc_ioctl_s_try_ext_ctrls(handle, ctrls, VIDIOC_S_EXT_CTRLS);
}
-static int uvc_ioctl_try_ext_ctrls(struct file *file, void *fh,
+static int uvc_ioctl_try_ext_ctrls(struct file *file, void *priv,
struct v4l2_ext_controls *ctrls)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
return uvc_ioctl_s_try_ext_ctrls(handle, ctrls, VIDIOC_TRY_EXT_CTRLS);
}
-static int uvc_ioctl_querymenu(struct file *file, void *fh,
+static int uvc_ioctl_querymenu(struct file *file, void *priv,
struct v4l2_querymenu *qm)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_video_chain *chain = handle->chain;
return uvc_query_v4l2_menu(chain, qm);
}
-static int uvc_ioctl_g_selection(struct file *file, void *fh,
+static int uvc_ioctl_g_selection(struct file *file, void *priv,
struct v4l2_selection *sel)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
if (sel->type != stream->type)
@@ -941,18 +917,16 @@ static int uvc_ioctl_g_selection(struct file *file, void *fh,
sel->r.left = 0;
sel->r.top = 0;
- mutex_lock(&stream->mutex);
sel->r.width = stream->cur_frame->wWidth;
sel->r.height = stream->cur_frame->wHeight;
- mutex_unlock(&stream->mutex);
return 0;
}
-static int uvc_ioctl_enum_framesizes(struct file *file, void *fh,
+static int uvc_ioctl_enum_framesizes(struct file *file, void *priv,
struct v4l2_frmsizeenum *fsize)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
const struct uvc_format *format = NULL;
const struct uvc_frame *frame = NULL;
@@ -989,10 +963,10 @@ static int uvc_ioctl_enum_framesizes(struct file *file, void *fh,
return 0;
}
-static int uvc_ioctl_enum_frameintervals(struct file *file, void *fh,
+static int uvc_ioctl_enum_frameintervals(struct file *file, void *priv,
struct v4l2_frmivalenum *fival)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_streaming *stream = handle->stream;
const struct uvc_format *format = NULL;
const struct uvc_frame *frame = NULL;
@@ -1061,10 +1035,10 @@ static int uvc_ioctl_subscribe_event(struct v4l2_fh *fh,
}
}
-static long uvc_ioctl_default(struct file *file, void *fh, bool valid_prio,
+static long uvc_ioctl_default(struct file *file, void *priv, bool valid_prio,
unsigned int cmd, void *arg)
{
- struct uvc_fh *handle = fh;
+ struct uvc_fh *handle = to_uvc_fh(file);
struct uvc_video_chain *chain = handle->chain;
switch (cmd) {
@@ -1170,7 +1144,7 @@ static int uvc_v4l2_put_xu_query(const struct uvc_xu_control_query *kp,
static long uvc_v4l2_compat_ioctl32(struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct uvc_fh *handle = file->private_data;
+ struct uvc_fh *handle = to_uvc_fh(file);
union {
struct uvc_xu_control_mapping xmap;
struct uvc_xu_control_query xqry;
@@ -1221,7 +1195,7 @@ static long uvc_v4l2_compat_ioctl32(struct file *file,
static long uvc_v4l2_unlocked_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct uvc_fh *handle = file->private_data;
+ struct uvc_fh *handle = to_uvc_fh(file);
unsigned int converted_cmd = v4l2_translate_cmd(cmd);
int ret;
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-03 18:59:35 +0000