summaryrefslogtreecommitdiff
path: root/drivers/media/usb
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/usb')
-rw-r--r--drivers/media/usb/gspca/vicam.c10
-rw-r--r--drivers/media/usb/hdpvr/hdpvr-i2c.c30
-rw-r--r--drivers/media/usb/stk1160/stk1160-v4l.c4
-rw-r--r--drivers/media/usb/stk1160/stk1160-video.c43
-rw-r--r--drivers/media/usb/stk1160/stk1160.h7
-rw-r--r--drivers/media/usb/usbtv/usbtv-video.c4
-rw-r--r--drivers/media/usb/uvc/uvc_ctrl.c131
-rw-r--r--drivers/media/usb/uvc/uvc_driver.c74
-rw-r--r--drivers/media/usb/uvc/uvc_metadata.c122
-rw-r--r--drivers/media/usb/uvc/uvc_queue.c199
-rw-r--r--drivers/media/usb/uvc/uvc_v4l2.c366
-rw-r--r--drivers/media/usb/uvc/uvc_video.c82
-rw-r--r--drivers/media/usb/uvc/uvcvideo.h46
13 files changed, 399 insertions, 719 deletions
diff --git a/drivers/media/usb/gspca/vicam.c b/drivers/media/usb/gspca/vicam.c
index d98343fd33fe..91e177aa8136 100644
--- a/drivers/media/usb/gspca/vicam.c
+++ b/drivers/media/usb/gspca/vicam.c
@@ -227,6 +227,7 @@ static int sd_init(struct gspca_dev *gspca_dev)
const struct ihex_binrec *rec;
const struct firmware *fw;
u8 *firmware_buf;
+ int len;
ret = request_ihex_firmware(&fw, VICAM_FIRMWARE,
&gspca_dev->dev->dev);
@@ -241,9 +242,14 @@ static int sd_init(struct gspca_dev *gspca_dev)
goto exit;
}
for (rec = (void *)fw->data; rec; rec = ihex_next_binrec(rec)) {
- memcpy(firmware_buf, rec->data, be16_to_cpu(rec->len));
+ len = be16_to_cpu(rec->len);
+ if (len > PAGE_SIZE) {
+ ret = -EINVAL;
+ break;
+ }
+ memcpy(firmware_buf, rec->data, len);
ret = vicam_control_msg(gspca_dev, 0xff, 0, 0, firmware_buf,
- be16_to_cpu(rec->len));
+ len);
if (ret < 0)
break;
}
diff --git a/drivers/media/usb/hdpvr/hdpvr-i2c.c b/drivers/media/usb/hdpvr/hdpvr-i2c.c
index 070559b01b01..9eacc85e3f11 100644
--- a/drivers/media/usb/hdpvr/hdpvr-i2c.c
+++ b/drivers/media/usb/hdpvr/hdpvr-i2c.c
@@ -124,32 +124,12 @@ static int hdpvr_transfer(struct i2c_adapter *i2c_adapter, struct i2c_msg *msgs,
else
retval = hdpvr_i2c_write(dev, 1, addr, msgs[0].buf,
msgs[0].len);
- } else if (num == 2) {
- if (msgs[0].addr != msgs[1].addr) {
- v4l2_warn(&dev->v4l2_dev, "refusing 2-phase i2c xfer with conflicting target addresses\n");
- retval = -EINVAL;
- goto out;
- }
-
- if ((msgs[0].flags & I2C_M_RD) || !(msgs[1].flags & I2C_M_RD)) {
- v4l2_warn(&dev->v4l2_dev, "refusing complex xfer with r0=%d, r1=%d\n",
- msgs[0].flags & I2C_M_RD,
- msgs[1].flags & I2C_M_RD);
- retval = -EINVAL;
- goto out;
- }
-
- /*
- * Write followed by atomic read is the only complex xfer that
- * we actually support here.
- */
+ } else {
+ /* do write-then-read */
retval = hdpvr_i2c_read(dev, 1, addr, msgs[0].buf, msgs[0].len,
msgs[1].buf, msgs[1].len);
- } else {
- v4l2_warn(&dev->v4l2_dev, "refusing %d-phase i2c xfer\n", num);
}
-out:
mutex_unlock(&dev->i2c_mutex);
return retval ? retval : num;
@@ -165,10 +145,16 @@ static const struct i2c_algorithm hdpvr_algo = {
.functionality = hdpvr_functionality,
};
+/* prevent invalid 0-length usb_control_msg and support only write-then-read */
+static const struct i2c_adapter_quirks hdpvr_quirks = {
+ .flags = I2C_AQ_NO_ZERO_LEN_READ | I2C_AQ_COMB_WRITE_THEN_READ,
+};
+
static const struct i2c_adapter hdpvr_i2c_adapter_template = {
.name = "Hauppauge HD PVR I2C",
.owner = THIS_MODULE,
.algo = &hdpvr_algo,
+ .quirks = &hdpvr_quirks,
};
static int hdpvr_activate_ir(struct hdpvr_device *dev)
diff --git a/drivers/media/usb/stk1160/stk1160-v4l.c b/drivers/media/usb/stk1160/stk1160-v4l.c
index 5ba3d9c4b3fb..715ce1dcb304 100644
--- a/drivers/media/usb/stk1160/stk1160-v4l.c
+++ b/drivers/media/usb/stk1160/stk1160-v4l.c
@@ -232,10 +232,6 @@ static int stk1160_start_streaming(struct stk1160 *dev)
/* submit urbs and enables IRQ */
for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
- struct stk1160_urb *stk_urb = &dev->isoc_ctl.urb_ctl[i];
-
- dma_sync_sgtable_for_device(stk1160_get_dmadev(dev), stk_urb->sgt,
- DMA_FROM_DEVICE);
rc = usb_submit_urb(dev->isoc_ctl.urb_ctl[i].urb, GFP_KERNEL);
if (rc) {
stk1160_err("cannot submit urb[%d] (%d)\n", i, rc);
diff --git a/drivers/media/usb/stk1160/stk1160-video.c b/drivers/media/usb/stk1160/stk1160-video.c
index 9cbd957ecc90..416cb74377eb 100644
--- a/drivers/media/usb/stk1160/stk1160-video.c
+++ b/drivers/media/usb/stk1160/stk1160-video.c
@@ -298,9 +298,7 @@ static void stk1160_process_isoc(struct stk1160 *dev, struct urb *urb)
static void stk1160_isoc_irq(struct urb *urb)
{
int i, rc;
- struct stk1160_urb *stk_urb = urb->context;
- struct stk1160 *dev = stk_urb->dev;
- struct device *dma_dev = stk1160_get_dmadev(dev);
+ struct stk1160 *dev = urb->context;
switch (urb->status) {
case 0:
@@ -315,10 +313,6 @@ static void stk1160_isoc_irq(struct urb *urb)
return;
}
- invalidate_kernel_vmap_range(stk_urb->transfer_buffer,
- urb->transfer_buffer_length);
- dma_sync_sgtable_for_cpu(dma_dev, stk_urb->sgt, DMA_FROM_DEVICE);
-
stk1160_process_isoc(dev, urb);
/* Reset urb buffers */
@@ -327,7 +321,6 @@ static void stk1160_isoc_irq(struct urb *urb)
urb->iso_frame_desc[i].actual_length = 0;
}
- dma_sync_sgtable_for_device(dma_dev, stk_urb->sgt, DMA_FROM_DEVICE);
rc = usb_submit_urb(urb, GFP_ATOMIC);
if (rc)
stk1160_err("urb re-submit failed (%d)\n", rc);
@@ -365,11 +358,9 @@ void stk1160_cancel_isoc(struct stk1160 *dev)
static void stk_free_urb(struct stk1160 *dev, struct stk1160_urb *stk_urb)
{
- struct device *dma_dev = stk1160_get_dmadev(dev);
-
- dma_vunmap_noncontiguous(dma_dev, stk_urb->transfer_buffer);
- dma_free_noncontiguous(dma_dev, stk_urb->urb->transfer_buffer_length,
- stk_urb->sgt, DMA_FROM_DEVICE);
+ usb_free_noncoherent(dev->udev, stk_urb->urb->transfer_buffer_length,
+ stk_urb->transfer_buffer, DMA_FROM_DEVICE,
+ stk_urb->sgt);
usb_free_urb(stk_urb->urb);
stk_urb->transfer_buffer = NULL;
@@ -410,32 +401,19 @@ void stk1160_uninit_isoc(struct stk1160 *dev)
static int stk1160_fill_urb(struct stk1160 *dev, struct stk1160_urb *stk_urb,
int sb_size, int max_packets)
{
- struct device *dma_dev = stk1160_get_dmadev(dev);
-
stk_urb->urb = usb_alloc_urb(max_packets, GFP_KERNEL);
if (!stk_urb->urb)
return -ENOMEM;
- stk_urb->sgt = dma_alloc_noncontiguous(dma_dev, sb_size,
- DMA_FROM_DEVICE, GFP_KERNEL, 0);
-
- /*
- * If the buffer allocation failed, we exit but return 0 since
- * we allow the driver working with less buffers
- */
- if (!stk_urb->sgt)
- goto free_urb;
- stk_urb->transfer_buffer = dma_vmap_noncontiguous(dma_dev, sb_size,
- stk_urb->sgt);
+ stk_urb->transfer_buffer = usb_alloc_noncoherent(dev->udev, sb_size,
+ GFP_KERNEL, &stk_urb->dma,
+ DMA_FROM_DEVICE, &stk_urb->sgt);
if (!stk_urb->transfer_buffer)
- goto free_sgt;
+ goto free_urb;
- stk_urb->dma = stk_urb->sgt->sgl->dma_address;
stk_urb->dev = dev;
return 0;
-free_sgt:
- dma_free_noncontiguous(dma_dev, sb_size, stk_urb->sgt, DMA_FROM_DEVICE);
- stk_urb->sgt = NULL;
+
free_urb:
usb_free_urb(stk_urb->urb);
stk_urb->urb = NULL;
@@ -494,12 +472,13 @@ int stk1160_alloc_isoc(struct stk1160 *dev)
urb->transfer_buffer = dev->isoc_ctl.urb_ctl[i].transfer_buffer;
urb->transfer_buffer_length = sb_size;
urb->complete = stk1160_isoc_irq;
- urb->context = &dev->isoc_ctl.urb_ctl[i];
+ urb->context = dev;
urb->interval = 1;
urb->start_frame = 0;
urb->number_of_packets = max_packets;
urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
urb->transfer_dma = dev->isoc_ctl.urb_ctl[i].dma;
+ urb->sgt = dev->isoc_ctl.urb_ctl[i].sgt;
k = 0;
for (j = 0; j < max_packets; j++) {
diff --git a/drivers/media/usb/stk1160/stk1160.h b/drivers/media/usb/stk1160/stk1160.h
index 7b498d14ed7a..4cbcb0a03bab 100644
--- a/drivers/media/usb/stk1160/stk1160.h
+++ b/drivers/media/usb/stk1160/stk1160.h
@@ -16,8 +16,6 @@
#include <media/videobuf2-v4l2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
-#include <linux/usb.h>
-#include <linux/usb/hcd.h>
#define STK1160_VERSION "0.9.5"
#define STK1160_VERSION_NUM 0x000905
@@ -195,8 +193,3 @@ void stk1160_select_input(struct stk1160 *dev);
/* Provided by stk1160-ac97.c */
void stk1160_ac97_setup(struct stk1160 *dev);
-
-static inline struct device *stk1160_get_dmadev(struct stk1160 *dev)
-{
- return bus_to_hcd(dev->udev->bus)->self.sysdev;
-}
diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c
index be22a9697197..de0328100a60 100644
--- a/drivers/media/usb/usbtv/usbtv-video.c
+++ b/drivers/media/usb/usbtv/usbtv-video.c
@@ -73,6 +73,10 @@ static int usbtv_configure_for_norm(struct usbtv *usbtv, v4l2_std_id norm)
}
if (params) {
+ if (vb2_is_busy(&usbtv->vb2q) &&
+ (usbtv->width != params->cap_width ||
+ usbtv->height != params->cap_height))
+ return -EBUSY;
usbtv->width = params->cap_width;
usbtv->height = params->cap_height;
usbtv->n_chunks = usbtv->width * usbtv->height
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 44b6513c5264..efe609d70877 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -1483,14 +1483,28 @@ static u32 uvc_get_ctrl_bitmap(struct uvc_control *ctrl,
return ~0;
}
+/*
+ * Maximum retry count to avoid spurious errors with controls. Increasing this
+ * value does no seem to produce better results in the tested hardware.
+ */
+#define MAX_QUERY_RETRIES 2
+
static int __uvc_queryctrl_boundaries(struct uvc_video_chain *chain,
struct uvc_control *ctrl,
struct uvc_control_mapping *mapping,
struct v4l2_query_ext_ctrl *v4l2_ctrl)
{
if (!ctrl->cached) {
- int ret = uvc_ctrl_populate_cache(chain, ctrl);
- if (ret < 0)
+ unsigned int retries;
+ int ret;
+
+ for (retries = 0; retries < MAX_QUERY_RETRIES; retries++) {
+ ret = uvc_ctrl_populate_cache(chain, ctrl);
+ if (ret != -EIO)
+ break;
+ }
+
+ if (ret)
return ret;
}
@@ -1567,6 +1581,7 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
{
struct uvc_control_mapping *master_map = NULL;
struct uvc_control *master_ctrl = NULL;
+ int ret;
memset(v4l2_ctrl, 0, sizeof(*v4l2_ctrl));
v4l2_ctrl->id = mapping->id;
@@ -1587,18 +1602,31 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
__uvc_find_control(ctrl->entity, mapping->master_id,
&master_map, &master_ctrl, 0, 0);
if (master_ctrl && (master_ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) {
+ unsigned int retries;
s32 val;
int ret;
if (WARN_ON(uvc_ctrl_mapping_is_compound(master_map)))
return -EIO;
- ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);
- if (ret < 0)
- return ret;
+ for (retries = 0; retries < MAX_QUERY_RETRIES; retries++) {
+ ret = __uvc_ctrl_get(chain, master_ctrl, master_map,
+ &val);
+ if (!ret)
+ break;
+ if (ret < 0 && ret != -EIO)
+ return ret;
+ }
- if (val != mapping->master_manual)
- v4l2_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
+ if (ret == -EIO) {
+ dev_warn_ratelimited(&chain->dev->udev->dev,
+ "UVC non compliance: Error %d querying master control %x (%s)\n",
+ ret, master_map->id,
+ uvc_map_get_name(master_map));
+ } else {
+ if (val != mapping->master_manual)
+ v4l2_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
+ }
}
v4l2_ctrl->elem_size = uvc_mapping_v4l2_size(mapping);
@@ -1613,7 +1641,18 @@ static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
return 0;
}
- return __uvc_queryctrl_boundaries(chain, ctrl, mapping, v4l2_ctrl);
+ ret = __uvc_queryctrl_boundaries(chain, ctrl, mapping, v4l2_ctrl);
+ if (ret && !mapping->disabled) {
+ dev_warn(&chain->dev->udev->dev,
+ "UVC non compliance: permanently disabling control %x (%s), due to error %d\n",
+ mapping->id, uvc_map_get_name(mapping), ret);
+ mapping->disabled = true;
+ }
+
+ if (mapping->disabled)
+ v4l2_ctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
+
+ return 0;
}
int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
@@ -1812,48 +1851,48 @@ static void uvc_ctrl_send_slave_event(struct uvc_video_chain *chain,
uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes);
}
-static int uvc_ctrl_set_handle(struct uvc_fh *handle, struct uvc_control *ctrl,
- struct uvc_fh *new_handle)
+static int uvc_ctrl_set_handle(struct uvc_control *ctrl, struct uvc_fh *handle)
{
- lockdep_assert_held(&handle->chain->ctrl_mutex);
-
- if (new_handle) {
- int ret;
+ int ret;
- if (ctrl->handle)
- dev_warn_ratelimited(&handle->stream->dev->udev->dev,
- "UVC non compliance: Setting an async control with a pending operation.");
+ lockdep_assert_held(&handle->chain->ctrl_mutex);
- if (new_handle == ctrl->handle)
- return 0;
+ if (ctrl->handle) {
+ dev_warn_ratelimited(&handle->stream->dev->udev->dev,
+ "UVC non compliance: Setting an async control with a pending operation.");
- if (ctrl->handle) {
- WARN_ON(!ctrl->handle->pending_async_ctrls);
- if (ctrl->handle->pending_async_ctrls)
- ctrl->handle->pending_async_ctrls--;
- ctrl->handle = new_handle;
- handle->pending_async_ctrls++;
+ if (ctrl->handle == handle)
return 0;
- }
-
- ret = uvc_pm_get(handle->chain->dev);
- if (ret)
- return ret;
- ctrl->handle = new_handle;
- handle->pending_async_ctrls++;
+ WARN_ON(!ctrl->handle->pending_async_ctrls);
+ if (ctrl->handle->pending_async_ctrls)
+ ctrl->handle->pending_async_ctrls--;
+ ctrl->handle = handle;
+ ctrl->handle->pending_async_ctrls++;
return 0;
}
- /* Cannot clear the handle for a control not owned by us.*/
- if (WARN_ON(ctrl->handle != handle))
+ ret = uvc_pm_get(handle->chain->dev);
+ if (ret)
+ return ret;
+
+ ctrl->handle = handle;
+ ctrl->handle->pending_async_ctrls++;
+ return 0;
+}
+
+static int uvc_ctrl_clear_handle(struct uvc_control *ctrl)
+{
+ lockdep_assert_held(&ctrl->handle->chain->ctrl_mutex);
+
+ if (WARN_ON(!ctrl->handle->pending_async_ctrls)) {
+ ctrl->handle = NULL;
return -EINVAL;
+ }
+ ctrl->handle->pending_async_ctrls--;
+ uvc_pm_put(ctrl->handle->chain->dev);
ctrl->handle = NULL;
- if (WARN_ON(!handle->pending_async_ctrls))
- return -EINVAL;
- handle->pending_async_ctrls--;
- uvc_pm_put(handle->chain->dev);
return 0;
}
@@ -1871,7 +1910,7 @@ void uvc_ctrl_status_event(struct uvc_video_chain *chain,
handle = ctrl->handle;
if (handle)
- uvc_ctrl_set_handle(handle, ctrl, NULL);
+ uvc_ctrl_clear_handle(ctrl);
list_for_each_entry(mapping, &ctrl->info.mappings, list) {
s32 value;
@@ -2033,18 +2072,24 @@ static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
goto done;
}
- list_add_tail(&sev->node, &mapping->ev_subs);
if (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL) {
struct v4l2_event ev;
u32 changes = V4L2_EVENT_CTRL_CH_FLAGS;
s32 val = 0;
+ ret = uvc_pm_get(handle->chain->dev);
+ if (ret)
+ goto done;
+
if (uvc_ctrl_mapping_is_compound(mapping) ||
__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0)
changes |= V4L2_EVENT_CTRL_CH_VALUE;
uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val,
changes);
+
+ uvc_pm_put(handle->chain->dev);
+
/*
* Mark the queue as active, allowing this initial event to be
* accepted.
@@ -2053,6 +2098,8 @@ static int uvc_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
v4l2_event_queue_fh(sev->fh, &ev);
}
+ list_add_tail(&sev->node, &mapping->ev_subs);
+
done:
mutex_unlock(&handle->chain->ctrl_mutex);
return ret;
@@ -2161,7 +2208,7 @@ static int uvc_ctrl_commit_entity(struct uvc_device *dev,
if (!rollback && handle && !ret &&
ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS)
- ret = uvc_ctrl_set_handle(handle, ctrl, handle);
+ ret = uvc_ctrl_set_handle(ctrl, handle);
if (ret < 0 && !rollback) {
if (err_ctrl)
@@ -3271,7 +3318,7 @@ void uvc_ctrl_cleanup_fh(struct uvc_fh *handle)
for (unsigned int i = 0; i < entity->ncontrols; ++i) {
if (entity->controls[i].handle != handle)
continue;
- uvc_ctrl_set_handle(handle, &entity->controls[i], NULL);
+ uvc_ctrl_clear_handle(&entity->controls[i]);
}
}
diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index da24a655ab68..775bede0d93d 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -344,6 +344,9 @@ static int uvc_parse_format(struct uvc_device *dev,
u8 ftype;
int ret;
+ if (buflen < 4)
+ return -EINVAL;
+
format->type = buffer[2];
format->index = buffer[3];
format->frames = frames;
@@ -1866,7 +1869,7 @@ static int uvc_scan_device(struct uvc_device *dev)
if (list_empty(&dev->chains)) {
dev_info(&dev->udev->dev, "No valid video chain found.\n");
- return -1;
+ return -ENODEV;
}
/* Add GPIO entity to the first chain. */
@@ -1958,31 +1961,7 @@ static void uvc_unregister_video(struct uvc_device *dev)
if (!video_is_registered(&stream->vdev))
continue;
- /*
- * For stream->vdev we follow the same logic as:
- * vb2_video_unregister_device().
- */
-
- /* 1. Take a reference to vdev */
- get_device(&stream->vdev.dev);
-
- /* 2. Ensure that no new ioctls can be called. */
- video_unregister_device(&stream->vdev);
-
- /* 3. Wait for old ioctls to finish. */
- mutex_lock(&stream->mutex);
-
- /* 4. Stop streaming. */
- uvc_queue_release(&stream->queue);
-
- mutex_unlock(&stream->mutex);
-
- put_device(&stream->vdev.dev);
-
- /*
- * For stream->meta.vdev we can directly call:
- * vb2_video_unregister_device().
- */
+ vb2_video_unregister_device(&stream->vdev);
vb2_video_unregister_device(&stream->meta.vdev);
/*
@@ -2030,6 +2009,8 @@ int uvc_register_video_device(struct uvc_device *dev,
vdev->ioctl_ops = ioctl_ops;
vdev->release = uvc_release;
vdev->prio = &stream->chain->prio;
+ vdev->queue = &queue->queue;
+ vdev->lock = &queue->mutex;
if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
vdev->vfl_dir = VFL_DIR_TX;
else
@@ -2239,7 +2220,6 @@ static int uvc_probe(struct usb_interface *intf,
/* Parse the Video Class control descriptor. */
ret = uvc_parse_control(dev);
if (ret < 0) {
- ret = -ENODEV;
uvc_dbg(dev, PROBE, "Unable to parse UVC descriptors\n");
goto error;
}
@@ -2275,22 +2255,19 @@ static int uvc_probe(struct usb_interface *intf,
goto error;
/* Scan the device for video chains. */
- if (uvc_scan_device(dev) < 0) {
- ret = -ENODEV;
+ ret = uvc_scan_device(dev);
+ if (ret < 0)
goto error;
- }
/* Initialize controls. */
- if (uvc_ctrl_init_device(dev) < 0) {
- ret = -ENODEV;
+ ret = uvc_ctrl_init_device(dev);
+ if (ret < 0)
goto error;
- }
/* Register video device nodes. */
- if (uvc_register_chains(dev) < 0) {
- ret = -ENODEV;
+ ret = uvc_register_chains(dev);
+ if (ret < 0)
goto error;
- }
#ifdef CONFIG_MEDIA_CONTROLLER
/* Register the media device node */
@@ -2316,6 +2293,13 @@ static int uvc_probe(struct usb_interface *intf,
goto error;
}
+ ret = uvc_meta_init(dev);
+ if (ret < 0) {
+ dev_err(&dev->udev->dev,
+ "Error initializing the metadata formats (%d)\n", ret);
+ goto error;
+ }
+
if (dev->quirks & UVC_QUIRK_NO_RESET_RESUME)
udev->quirks &= ~USB_QUIRK_RESET_RESUME;
@@ -2398,9 +2382,12 @@ static int __uvc_resume(struct usb_interface *intf, int reset)
list_for_each_entry(stream, &dev->streams, list) {
if (stream->intf == intf) {
ret = uvc_video_resume(stream, reset);
- if (ret < 0)
- uvc_queue_streamoff(&stream->queue,
- stream->queue.queue.type);
+ if (ret < 0) {
+ mutex_lock(&stream->queue.mutex);
+ vb2_streamoff(&stream->queue.queue,
+ stream->queue.queue.type);
+ mutex_unlock(&stream->queue.mutex);
+ }
return ret;
}
}
@@ -2514,6 +2501,15 @@ static const struct uvc_device_info uvc_quirk_force_y8 = {
* Sort these by vendor/product ID.
*/
static const struct usb_device_id uvc_ids[] = {
+ /* HP Webcam HD 2300 */
+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
+ | USB_DEVICE_ID_MATCH_INT_INFO,
+ .idVendor = 0x03f0,
+ .idProduct = 0xe207,
+ .bInterfaceClass = USB_CLASS_VIDEO,
+ .bInterfaceSubClass = 1,
+ .bInterfaceProtocol = 0,
+ .driver_info = (kernel_ulong_t)&uvc_quirk_stream_no_fid },
/* Quanta ACER HD User Facing */
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
| USB_DEVICE_ID_MATCH_INT_INFO,
diff --git a/drivers/media/usb/uvc/uvc_metadata.c b/drivers/media/usb/uvc/uvc_metadata.c
index 82de7781f5b6..229e08ff323e 100644
--- a/drivers/media/usb/uvc/uvc_metadata.c
+++ b/drivers/media/usb/uvc/uvc_metadata.c
@@ -10,6 +10,7 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/usb.h>
+#include <linux/usb/uvc.h>
#include <linux/videodev2.h>
#include <media/v4l2-ioctl.h>
@@ -63,15 +64,20 @@ static int uvc_meta_v4l2_try_format(struct file *file, void *fh,
struct uvc_streaming *stream = video_get_drvdata(vfh->vdev);
struct uvc_device *dev = stream->dev;
struct v4l2_meta_format *fmt = &format->fmt.meta;
- u32 fmeta = fmt->dataformat;
+ u32 fmeta = V4L2_META_FMT_UVC;
if (format->type != vfh->vdev->queue->type)
return -EINVAL;
+ for (unsigned int i = 0; i < dev->nmeta_formats; i++)
+ if (dev->meta_formats[i] == fmt->dataformat) {
+ fmeta = fmt->dataformat;
+ break;
+ }
+
memset(fmt, 0, sizeof(*fmt));
- fmt->dataformat = fmeta == dev->info->meta_format
- ? fmeta : V4L2_META_FMT_UVC;
+ fmt->dataformat = fmeta;
fmt->buffersize = UVC_METADATA_BUF_SIZE;
return 0;
@@ -96,7 +102,7 @@ static int uvc_meta_v4l2_set_format(struct file *file, void *fh,
*/
mutex_lock(&stream->mutex);
- if (uvc_queue_allocated(&stream->queue))
+ if (vb2_is_busy(&stream->meta.queue.queue))
ret = -EBUSY;
else
stream->meta.format = fmt->dataformat;
@@ -112,17 +118,19 @@ static int uvc_meta_v4l2_enum_formats(struct file *file, void *fh,
struct v4l2_fh *vfh = file->private_data;
struct uvc_streaming *stream = video_get_drvdata(vfh->vdev);
struct uvc_device *dev = stream->dev;
- u32 index = fdesc->index;
+ u32 i = fdesc->index;
+
+ if (fdesc->type != vfh->vdev->queue->type)
+ return -EINVAL;
- if (fdesc->type != vfh->vdev->queue->type ||
- index > 1U || (index && !dev->info->meta_format))
+ if (i >= dev->nmeta_formats)
return -EINVAL;
memset(fdesc, 0, sizeof(*fdesc));
fdesc->type = vfh->vdev->queue->type;
- fdesc->index = index;
- fdesc->pixelformat = index ? dev->info->meta_format : V4L2_META_FMT_UVC;
+ fdesc->index = i;
+ fdesc->pixelformat = dev->meta_formats[i];
return 0;
}
@@ -156,6 +164,71 @@ static const struct v4l2_file_operations uvc_meta_fops = {
.mmap = vb2_fop_mmap,
};
+static struct uvc_entity *uvc_meta_find_msxu(struct uvc_device *dev)
+{
+ static const u8 uvc_msxu_guid[16] = UVC_GUID_MSXU_1_5;
+ struct uvc_entity *entity;
+
+ list_for_each_entry(entity, &dev->entities, list) {
+ if (!memcmp(entity->guid, uvc_msxu_guid, sizeof(entity->guid)))
+ return entity;
+ }
+
+ return NULL;
+}
+
+#define MSXU_CONTROL_METADATA 0x9
+static int uvc_meta_detect_msxu(struct uvc_device *dev)
+{
+ u32 *data __free(kfree) = NULL;
+ struct uvc_entity *entity;
+ int ret;
+
+ entity = uvc_meta_find_msxu(dev);
+ if (!entity)
+ return 0;
+
+ /*
+ * USB requires buffers aligned in a special way, simplest way is to
+ * make sure that query_ctrl will work is to kmalloc() them.
+ */
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ /* Check if the metadata is already enabled. */
+ ret = uvc_query_ctrl(dev, UVC_GET_CUR, entity->id, dev->intfnum,
+ MSXU_CONTROL_METADATA, data, sizeof(*data));
+ if (ret)
+ return 0;
+
+ if (*data) {
+ dev->quirks |= UVC_QUIRK_MSXU_META;
+ return 0;
+ }
+
+ /*
+ * We have seen devices that require 1 to enable the metadata, others
+ * requiring a value != 1 and others requiring a value >1. Luckily for
+ * us, the value from GET_MAX seems to work all the time.
+ */
+ ret = uvc_query_ctrl(dev, UVC_GET_MAX, entity->id, dev->intfnum,
+ MSXU_CONTROL_METADATA, data, sizeof(*data));
+ if (ret || !*data)
+ return 0;
+
+ /*
+ * If we can set MSXU_CONTROL_METADATA, the device will report
+ * metadata.
+ */
+ ret = uvc_query_ctrl(dev, UVC_SET_CUR, entity->id, dev->intfnum,
+ MSXU_CONTROL_METADATA, data, sizeof(*data));
+ if (!ret)
+ dev->quirks |= UVC_QUIRK_MSXU_META;
+
+ return 0;
+}
+
int uvc_meta_register(struct uvc_streaming *stream)
{
struct uvc_device *dev = stream->dev;
@@ -164,13 +237,32 @@ int uvc_meta_register(struct uvc_streaming *stream)
stream->meta.format = V4L2_META_FMT_UVC;
- /*
- * The video interface queue uses manual locking and thus does not set
- * the queue pointer. Set it manually here.
- */
- vdev->queue = &queue->queue;
-
return uvc_register_video_device(dev, stream, vdev, queue,
V4L2_BUF_TYPE_META_CAPTURE,
&uvc_meta_fops, &uvc_meta_ioctl_ops);
}
+
+int uvc_meta_init(struct uvc_device *dev)
+{
+ unsigned int i = 0;
+ int ret;
+
+ ret = uvc_meta_detect_msxu(dev);
+ if (ret)
+ return ret;
+
+ dev->meta_formats[i++] = V4L2_META_FMT_UVC;
+
+ if (dev->info->meta_format &&
+ !WARN_ON(dev->info->meta_format == V4L2_META_FMT_UVC))
+ dev->meta_formats[i++] = dev->info->meta_format;
+
+ if (dev->quirks & UVC_QUIRK_MSXU_META &&
+ !WARN_ON(dev->info->meta_format == V4L2_META_FMT_UVC_MSXU_1_5))
+ dev->meta_formats[i++] = V4L2_META_FMT_UVC_MSXU_1_5;
+
+ /* IMPORTANT: for new meta-formats update UVC_MAX_META_DATA_FORMATS. */
+ dev->nmeta_formats = i;
+
+ return 0;
+}
diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
index 2ee142621042..790184c9843d 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -42,13 +42,15 @@ static inline struct uvc_buffer *uvc_vbuf_to_buffer(struct vb2_v4l2_buffer *buf)
*
* This function must be called with the queue spinlock held.
*/
-static void uvc_queue_return_buffers(struct uvc_video_queue *queue,
- enum uvc_buffer_state state)
+static void __uvc_queue_return_buffers(struct uvc_video_queue *queue,
+ enum uvc_buffer_state state)
{
enum vb2_buffer_state vb2_state = state == UVC_BUF_STATE_ERROR
? VB2_BUF_STATE_ERROR
: VB2_BUF_STATE_QUEUED;
+ lockdep_assert_held(&queue->irqlock);
+
while (!list_empty(&queue->irqqueue)) {
struct uvc_buffer *buf = list_first_entry(&queue->irqqueue,
struct uvc_buffer,
@@ -59,6 +61,14 @@ static void uvc_queue_return_buffers(struct uvc_video_queue *queue,
}
}
+static void uvc_queue_return_buffers(struct uvc_video_queue *queue,
+ enum uvc_buffer_state state)
+{
+ spin_lock_irq(&queue->irqlock);
+ __uvc_queue_return_buffers(queue, state);
+ spin_unlock_irq(&queue->irqlock);
+}
+
/* -----------------------------------------------------------------------------
* videobuf2 queue operations
*/
@@ -157,7 +167,7 @@ static void uvc_buffer_finish(struct vb2_buffer *vb)
uvc_video_clock_update(stream, vbuf, buf);
}
-static int uvc_start_streaming(struct vb2_queue *vq, unsigned int count)
+static int uvc_start_streaming_video(struct vb2_queue *vq, unsigned int count)
{
struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
struct uvc_streaming *stream = uvc_queue_to_stream(queue);
@@ -165,31 +175,44 @@ static int uvc_start_streaming(struct vb2_queue *vq, unsigned int count)
lockdep_assert_irqs_enabled();
+ ret = uvc_pm_get(stream->dev);
+ if (ret)
+ return ret;
+
queue->buf_used = 0;
ret = uvc_video_start_streaming(stream);
if (ret == 0)
return 0;
- spin_lock_irq(&queue->irqlock);
+ uvc_pm_put(stream->dev);
+
uvc_queue_return_buffers(queue, UVC_BUF_STATE_QUEUED);
- spin_unlock_irq(&queue->irqlock);
return ret;
}
-static void uvc_stop_streaming(struct vb2_queue *vq)
+static void uvc_stop_streaming_video(struct vb2_queue *vq)
{
struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
+ struct uvc_streaming *stream = uvc_queue_to_stream(queue);
lockdep_assert_irqs_enabled();
- if (vq->type != V4L2_BUF_TYPE_META_CAPTURE)
- uvc_video_stop_streaming(uvc_queue_to_stream(queue));
+ uvc_video_stop_streaming(uvc_queue_to_stream(queue));
+
+ uvc_pm_put(stream->dev);
+
+ uvc_queue_return_buffers(queue, UVC_BUF_STATE_ERROR);
+}
+
+static void uvc_stop_streaming_meta(struct vb2_queue *vq)
+{
+ struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
+
+ lockdep_assert_irqs_enabled();
- spin_lock_irq(&queue->irqlock);
uvc_queue_return_buffers(queue, UVC_BUF_STATE_ERROR);
- spin_unlock_irq(&queue->irqlock);
}
static const struct vb2_ops uvc_queue_qops = {
@@ -197,15 +220,20 @@ static const struct vb2_ops uvc_queue_qops = {
.buf_prepare = uvc_buffer_prepare,
.buf_queue = uvc_buffer_queue,
.buf_finish = uvc_buffer_finish,
- .start_streaming = uvc_start_streaming,
- .stop_streaming = uvc_stop_streaming,
+ .start_streaming = uvc_start_streaming_video,
+ .stop_streaming = uvc_stop_streaming_video,
};
static const struct vb2_ops uvc_meta_queue_qops = {
.queue_setup = uvc_queue_setup,
.buf_prepare = uvc_buffer_prepare,
.buf_queue = uvc_buffer_queue,
- .stop_streaming = uvc_stop_streaming,
+ /*
+ * .start_streaming is not provided here. Metadata relies on video
+ * streaming being active. If video isn't streaming, then no metadata
+ * will arrive either.
+ */
+ .stop_streaming = uvc_stop_streaming_meta,
};
int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type)
@@ -242,154 +270,11 @@ int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type)
return 0;
}
-void uvc_queue_release(struct uvc_video_queue *queue)
-{
- mutex_lock(&queue->mutex);
- vb2_queue_release(&queue->queue);
- mutex_unlock(&queue->mutex);
-}
-
-/* -----------------------------------------------------------------------------
- * V4L2 queue operations
- */
-
-int uvc_request_buffers(struct uvc_video_queue *queue,
- struct v4l2_requestbuffers *rb)
-{
- int ret;
-
- mutex_lock(&queue->mutex);
- ret = vb2_reqbufs(&queue->queue, rb);
- mutex_unlock(&queue->mutex);
-
- return ret ? ret : rb->count;
-}
-
-int uvc_query_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf)
-{
- int ret;
-
- mutex_lock(&queue->mutex);
- ret = vb2_querybuf(&queue->queue, buf);
- mutex_unlock(&queue->mutex);
-
- return ret;
-}
-
-int uvc_create_buffers(struct uvc_video_queue *queue,
- struct v4l2_create_buffers *cb)
-{
- int ret;
-
- mutex_lock(&queue->mutex);
- ret = vb2_create_bufs(&queue->queue, cb);
- mutex_unlock(&queue->mutex);
-
- return ret;
-}
-
-int uvc_queue_buffer(struct uvc_video_queue *queue,
- struct media_device *mdev, struct v4l2_buffer *buf)
-{
- int ret;
-
- mutex_lock(&queue->mutex);
- ret = vb2_qbuf(&queue->queue, mdev, buf);
- mutex_unlock(&queue->mutex);
-
- return ret;
-}
-
-int uvc_export_buffer(struct uvc_video_queue *queue,
- struct v4l2_exportbuffer *exp)
-{
- int ret;
-
- mutex_lock(&queue->mutex);
- ret = vb2_expbuf(&queue->queue, exp);
- mutex_unlock(&queue->mutex);
-
- return ret;
-}
-
-int uvc_dequeue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *buf,
- int nonblocking)
-{
- int ret;
-
- mutex_lock(&queue->mutex);
- ret = vb2_dqbuf(&queue->queue, buf, nonblocking);
- mutex_unlock(&queue->mutex);
-
- return ret;
-}
-
-int uvc_queue_streamon(struct uvc_video_queue *queue, enum v4l2_buf_type type)
-{
- int ret;
-
- mutex_lock(&queue->mutex);
- ret = vb2_streamon(&queue->queue, type);
- mutex_unlock(&queue->mutex);
-
- return ret;
-}
-
-int uvc_queue_streamoff(struct uvc_video_queue *queue, enum v4l2_buf_type type)
-{
- int ret;
-
- mutex_lock(&queue->mutex);
- ret = vb2_streamoff(&queue->queue, type);
- mutex_unlock(&queue->mutex);
-
- return ret;
-}
-
-int uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma)
-{
- return vb2_mmap(&queue->queue, vma);
-}
-
-#ifndef CONFIG_MMU
-unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
- unsigned long pgoff)
-{
- return vb2_get_unmapped_area(&queue->queue, 0, 0, pgoff, 0);
-}
-#endif
-
-__poll_t uvc_queue_poll(struct uvc_video_queue *queue, struct file *file,
- poll_table *wait)
-{
- __poll_t ret;
-
- mutex_lock(&queue->mutex);
- ret = vb2_poll(&queue->queue, file, wait);
- mutex_unlock(&queue->mutex);
-
- return ret;
-}
-
/* -----------------------------------------------------------------------------
*
*/
/*
- * Check if buffers have been allocated.
- */
-int uvc_queue_allocated(struct uvc_video_queue *queue)
-{
- int allocated;
-
- mutex_lock(&queue->mutex);
- allocated = vb2_is_busy(&queue->queue);
- mutex_unlock(&queue->mutex);
-
- return allocated;
-}
-
-/*
* Cancel the video buffers queue.
*
* Cancelling the queue marks all buffers on the irq queue as erroneous,
@@ -406,7 +291,7 @@ void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect)
unsigned long flags;
spin_lock_irqsave(&queue->irqlock, flags);
- uvc_queue_return_buffers(queue, UVC_BUF_STATE_ERROR);
+ __uvc_queue_return_buffers(queue, UVC_BUF_STATE_ERROR);
/*
* This must be protected by the irqlock spinlock to avoid race
* conditions between uvc_buffer_queue and the disconnection event that
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 668a4e9d772c..160f9cf6e6db 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -47,8 +47,6 @@ void uvc_pm_put(struct uvc_device *dev)
usb_autopm_put_interface(dev->intf);
}
-static int uvc_acquire_privileges(struct uvc_fh *handle);
-
static int uvc_control_add_xu_mapping(struct uvc_video_chain *chain,
struct uvc_control_mapping *map,
const struct uvc_xu_control_mapping *xmap)
@@ -436,10 +434,6 @@ static int uvc_ioctl_s_fmt(struct file *file, void *fh,
const struct uvc_frame *frame;
int ret;
- ret = uvc_acquire_privileges(handle);
- if (ret < 0)
- return ret;
-
if (fmt->type != stream->type)
return -EINVAL;
@@ -448,8 +442,7 @@ static int uvc_ioctl_s_fmt(struct file *file, void *fh,
return ret;
mutex_lock(&stream->mutex);
-
- if (uvc_queue_allocated(&stream->queue)) {
+ if (vb2_is_busy(&stream->queue.queue)) {
ret = -EBUSY;
goto done;
}
@@ -513,10 +506,6 @@ static int uvc_ioctl_s_parm(struct file *file, void *fh,
unsigned int i;
int ret;
- ret = uvc_acquire_privileges(handle);
- if (ret < 0)
- return ret;
-
if (parm->type != stream->type)
return -EINVAL;
@@ -594,63 +583,6 @@ static int uvc_ioctl_s_parm(struct file *file, void *fh,
}
/* ------------------------------------------------------------------------
- * Privilege management
- */
-
-/*
- * Privilege management is the multiple-open implementation basis. The current
- * implementation is completely transparent for the end-user and doesn't
- * require explicit use of the VIDIOC_G_PRIORITY and VIDIOC_S_PRIORITY ioctls.
- * Those ioctls enable finer control on the device (by making possible for a
- * user to request exclusive access to a device), but are not mature yet.
- * Switching to the V4L2 priority mechanism might be considered in the future
- * if this situation changes.
- *
- * Each open instance of a UVC device can either be in a privileged or
- * unprivileged state. Only a single instance can be in a privileged state at
- * a given time. Trying to perform an operation that requires privileges will
- * automatically acquire the required privileges if possible, or return -EBUSY
- * otherwise. Privileges are dismissed when closing the instance or when
- * freeing the video buffers using VIDIOC_REQBUFS.
- *
- * Operations that require privileges are:
- *
- * - VIDIOC_S_INPUT
- * - VIDIOC_S_PARM
- * - VIDIOC_S_FMT
- * - VIDIOC_CREATE_BUFS
- * - VIDIOC_REQBUFS
- */
-static int uvc_acquire_privileges(struct uvc_fh *handle)
-{
- /* Always succeed if the handle is already privileged. */
- if (handle->state == UVC_HANDLE_ACTIVE)
- return 0;
-
- /* Check if the device already has a privileged handle. */
- if (atomic_inc_return(&handle->stream->active) != 1) {
- atomic_dec(&handle->stream->active);
- return -EBUSY;
- }
-
- handle->state = UVC_HANDLE_ACTIVE;
- return 0;
-}
-
-static void uvc_dismiss_privileges(struct uvc_fh *handle)
-{
- if (handle->state == UVC_HANDLE_ACTIVE)
- atomic_dec(&handle->stream->active);
-
- handle->state = UVC_HANDLE_PASSIVE;
-}
-
-static int uvc_has_privileges(struct uvc_fh *handle)
-{
- return handle->state == UVC_HANDLE_ACTIVE;
-}
-
-/* ------------------------------------------------------------------------
* V4L2 file operations
*/
@@ -671,7 +603,6 @@ static int uvc_v4l2_open(struct file *file)
v4l2_fh_add(&handle->vfh);
handle->chain = stream->chain;
handle->stream = stream;
- handle->state = UVC_HANDLE_PASSIVE;
file->private_data = handle;
return 0;
@@ -686,19 +617,8 @@ static int uvc_v4l2_release(struct file *file)
uvc_ctrl_cleanup_fh(handle);
- /* Only free resources if this is a privileged handle. */
- if (uvc_has_privileges(handle))
- uvc_queue_release(&stream->queue);
-
- if (handle->is_streaming)
- uvc_pm_put(stream->dev);
-
/* Release the file handle. */
- uvc_dismiss_privileges(handle);
- v4l2_fh_del(&handle->vfh);
- v4l2_fh_exit(&handle->vfh);
- kfree(handle);
- file->private_data = NULL;
+ vb2_fop_release(file);
return 0;
}
@@ -753,140 +673,6 @@ static int uvc_ioctl_try_fmt(struct file *file, void *fh,
return uvc_v4l2_try_format(stream, fmt, &probe, NULL, NULL);
}
-static int uvc_ioctl_reqbufs(struct file *file, void *fh,
- struct v4l2_requestbuffers *rb)
-{
- struct uvc_fh *handle = fh;
- struct uvc_streaming *stream = handle->stream;
- int ret;
-
- ret = uvc_acquire_privileges(handle);
- if (ret < 0)
- return ret;
-
- mutex_lock(&stream->mutex);
- ret = uvc_request_buffers(&stream->queue, rb);
- mutex_unlock(&stream->mutex);
- if (ret < 0)
- return ret;
-
- if (ret == 0)
- uvc_dismiss_privileges(handle);
-
- return 0;
-}
-
-static int uvc_ioctl_querybuf(struct file *file, void *fh,
- struct v4l2_buffer *buf)
-{
- struct uvc_fh *handle = fh;
- struct uvc_streaming *stream = handle->stream;
-
- if (!uvc_has_privileges(handle))
- return -EBUSY;
-
- return uvc_query_buffer(&stream->queue, buf);
-}
-
-static int uvc_ioctl_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
-{
- struct uvc_fh *handle = fh;
- struct uvc_streaming *stream = handle->stream;
-
- if (!uvc_has_privileges(handle))
- return -EBUSY;
-
- return uvc_queue_buffer(&stream->queue,
- stream->vdev.v4l2_dev->mdev, buf);
-}
-
-static int uvc_ioctl_expbuf(struct file *file, void *fh,
- struct v4l2_exportbuffer *exp)
-{
- struct uvc_fh *handle = fh;
- struct uvc_streaming *stream = handle->stream;
-
- if (!uvc_has_privileges(handle))
- return -EBUSY;
-
- return uvc_export_buffer(&stream->queue, exp);
-}
-
-static int uvc_ioctl_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
-{
- struct uvc_fh *handle = fh;
- struct uvc_streaming *stream = handle->stream;
-
- if (!uvc_has_privileges(handle))
- return -EBUSY;
-
- return uvc_dequeue_buffer(&stream->queue, buf,
- file->f_flags & O_NONBLOCK);
-}
-
-static int uvc_ioctl_create_bufs(struct file *file, void *fh,
- struct v4l2_create_buffers *cb)
-{
- struct uvc_fh *handle = fh;
- struct uvc_streaming *stream = handle->stream;
- int ret;
-
- ret = uvc_acquire_privileges(handle);
- if (ret < 0)
- return ret;
-
- return uvc_create_buffers(&stream->queue, cb);
-}
-
-static int uvc_ioctl_streamon(struct file *file, void *fh,
- enum v4l2_buf_type type)
-{
- struct uvc_fh *handle = fh;
- struct uvc_streaming *stream = handle->stream;
- int ret;
-
- if (!uvc_has_privileges(handle))
- return -EBUSY;
-
- guard(mutex)(&stream->mutex);
-
- if (handle->is_streaming)
- return 0;
-
- ret = uvc_queue_streamon(&stream->queue, type);
- if (ret)
- return ret;
-
- ret = uvc_pm_get(stream->dev);
- if (ret) {
- uvc_queue_streamoff(&stream->queue, type);
- return ret;
- }
- handle->is_streaming = true;
-
- return 0;
-}
-
-static int uvc_ioctl_streamoff(struct file *file, void *fh,
- enum v4l2_buf_type type)
-{
- struct uvc_fh *handle = fh;
- struct uvc_streaming *stream = handle->stream;
-
- if (!uvc_has_privileges(handle))
- return -EBUSY;
-
- guard(mutex)(&stream->mutex);
-
- uvc_queue_streamoff(&stream->queue, type);
- if (handle->is_streaming) {
- handle->is_streaming = false;
- uvc_pm_put(stream->dev);
- }
-
- return 0;
-}
-
static int uvc_ioctl_enum_input(struct file *file, void *fh,
struct v4l2_input *input)
{
@@ -961,13 +747,13 @@ static int uvc_ioctl_g_input(struct file *file, void *fh, unsigned int *input)
static int uvc_ioctl_s_input(struct file *file, void *fh, unsigned int input)
{
struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
struct uvc_video_chain *chain = handle->chain;
u8 *buf;
int ret;
- ret = uvc_acquire_privileges(handle);
- if (ret < 0)
- return ret;
+ if (vb2_is_busy(&stream->queue.queue))
+ return -EBUSY;
if (chain->selector == NULL ||
(chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) {
@@ -1381,11 +1167,9 @@ static int uvc_v4l2_put_xu_query(const struct uvc_xu_control_query *kp,
#define UVCIOC_CTRL_MAP32 _IOWR('u', 0x20, struct uvc_xu_control_mapping32)
#define UVCIOC_CTRL_QUERY32 _IOWR('u', 0x21, struct uvc_xu_control_query32)
-DEFINE_FREE(uvc_pm_put, struct uvc_device *, if (_T) uvc_pm_put(_T))
static long uvc_v4l2_compat_ioctl32(struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct uvc_device *uvc_device __free(uvc_pm_put) = NULL;
struct uvc_fh *handle = file->private_data;
union {
struct uvc_xu_control_mapping xmap;
@@ -1398,38 +1182,38 @@ static long uvc_v4l2_compat_ioctl32(struct file *file,
if (ret)
return ret;
- uvc_device = handle->stream->dev;
-
switch (cmd) {
case UVCIOC_CTRL_MAP32:
ret = uvc_v4l2_get_xu_mapping(&karg.xmap, up);
if (ret)
- return ret;
+ break;
ret = uvc_ioctl_xu_ctrl_map(handle->chain, &karg.xmap);
if (ret)
- return ret;
+ break;
ret = uvc_v4l2_put_xu_mapping(&karg.xmap, up);
if (ret)
- return ret;
-
+ break;
break;
case UVCIOC_CTRL_QUERY32:
ret = uvc_v4l2_get_xu_query(&karg.xqry, up);
if (ret)
- return ret;
+ break;
ret = uvc_xu_ctrl_query(handle->chain, &karg.xqry);
if (ret)
- return ret;
+ break;
ret = uvc_v4l2_put_xu_query(&karg.xqry, up);
if (ret)
- return ret;
+ break;
break;
default:
- return -ENOIOCTLCMD;
+ ret = -ENOIOCTLCMD;
+ break;
}
+ uvc_pm_put(handle->stream->dev);
+
return ret;
}
#endif
@@ -1438,81 +1222,37 @@ static long uvc_v4l2_unlocked_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct uvc_fh *handle = file->private_data;
+ unsigned int converted_cmd = v4l2_translate_cmd(cmd);
int ret;
- /* The following IOCTLs do not need to turn on the camera. */
- switch (cmd) {
- case VIDIOC_CREATE_BUFS:
- case VIDIOC_DQBUF:
- case VIDIOC_ENUM_FMT:
- case VIDIOC_ENUM_FRAMEINTERVALS:
- case VIDIOC_ENUM_FRAMESIZES:
- case VIDIOC_ENUMINPUT:
- case VIDIOC_EXPBUF:
- case VIDIOC_G_FMT:
- case VIDIOC_G_PARM:
- case VIDIOC_G_SELECTION:
- case VIDIOC_QBUF:
- case VIDIOC_QUERYCAP:
- case VIDIOC_REQBUFS:
- case VIDIOC_SUBSCRIBE_EVENT:
- case VIDIOC_UNSUBSCRIBE_EVENT:
- return video_ioctl2(file, cmd, arg);
- }
-
- ret = uvc_pm_get(handle->stream->dev);
- if (ret)
+ /* The following IOCTLs need to turn on the camera. */
+ switch (converted_cmd) {
+ case UVCIOC_CTRL_MAP:
+ case UVCIOC_CTRL_QUERY:
+ case VIDIOC_G_CTRL:
+ case VIDIOC_G_EXT_CTRLS:
+ case VIDIOC_G_INPUT:
+ case VIDIOC_QUERYCTRL:
+ case VIDIOC_QUERYMENU:
+ case VIDIOC_QUERY_EXT_CTRL:
+ case VIDIOC_S_CTRL:
+ case VIDIOC_S_EXT_CTRLS:
+ case VIDIOC_S_FMT:
+ case VIDIOC_S_INPUT:
+ case VIDIOC_S_PARM:
+ case VIDIOC_TRY_EXT_CTRLS:
+ case VIDIOC_TRY_FMT:
+ ret = uvc_pm_get(handle->stream->dev);
+ if (ret)
+ return ret;
+ ret = video_ioctl2(file, cmd, arg);
+ uvc_pm_put(handle->stream->dev);
return ret;
+ }
- ret = video_ioctl2(file, cmd, arg);
-
- uvc_pm_put(handle->stream->dev);
- return ret;
-}
-
-static ssize_t uvc_v4l2_read(struct file *file, char __user *data,
- size_t count, loff_t *ppos)
-{
- struct uvc_fh *handle = file->private_data;
- struct uvc_streaming *stream = handle->stream;
-
- uvc_dbg(stream->dev, CALLS, "%s: not implemented\n", __func__);
- return -EINVAL;
-}
-
-static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
-{
- struct uvc_fh *handle = file->private_data;
- struct uvc_streaming *stream = handle->stream;
-
- uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
-
- return uvc_queue_mmap(&stream->queue, vma);
-}
-
-static __poll_t uvc_v4l2_poll(struct file *file, poll_table *wait)
-{
- struct uvc_fh *handle = file->private_data;
- struct uvc_streaming *stream = handle->stream;
-
- uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
-
- return uvc_queue_poll(&stream->queue, file, wait);
-}
-
-#ifndef CONFIG_MMU
-static unsigned long uvc_v4l2_get_unmapped_area(struct file *file,
- unsigned long addr, unsigned long len, unsigned long pgoff,
- unsigned long flags)
-{
- struct uvc_fh *handle = file->private_data;
- struct uvc_streaming *stream = handle->stream;
-
- uvc_dbg(stream->dev, CALLS, "%s\n", __func__);
-
- return uvc_queue_get_unmapped_area(&stream->queue, pgoff);
+ /* The other IOCTLs can run with the camera off. */
+ return video_ioctl2(file, cmd, arg);
}
-#endif
const struct v4l2_ioctl_ops uvc_ioctl_ops = {
.vidioc_g_fmt_vid_cap = uvc_ioctl_g_fmt,
@@ -1526,14 +1266,15 @@ const struct v4l2_ioctl_ops uvc_ioctl_ops = {
.vidioc_enum_fmt_vid_out = uvc_ioctl_enum_fmt,
.vidioc_try_fmt_vid_cap = uvc_ioctl_try_fmt,
.vidioc_try_fmt_vid_out = uvc_ioctl_try_fmt,
- .vidioc_reqbufs = uvc_ioctl_reqbufs,
- .vidioc_querybuf = uvc_ioctl_querybuf,
- .vidioc_qbuf = uvc_ioctl_qbuf,
- .vidioc_expbuf = uvc_ioctl_expbuf,
- .vidioc_dqbuf = uvc_ioctl_dqbuf,
- .vidioc_create_bufs = uvc_ioctl_create_bufs,
- .vidioc_streamon = uvc_ioctl_streamon,
- .vidioc_streamoff = uvc_ioctl_streamoff,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_expbuf = vb2_ioctl_expbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_enum_input = uvc_ioctl_enum_input,
.vidioc_g_input = uvc_ioctl_g_input,
.vidioc_s_input = uvc_ioctl_s_input,
@@ -1558,11 +1299,10 @@ const struct v4l2_file_operations uvc_fops = {
#ifdef CONFIG_COMPAT
.compat_ioctl32 = uvc_v4l2_compat_ioctl32,
#endif
- .read = uvc_v4l2_read,
- .mmap = uvc_v4l2_mmap,
- .poll = uvc_v4l2_poll,
+ .mmap = vb2_fop_mmap,
+ .poll = vb2_fop_poll,
#ifndef CONFIG_MMU
- .get_unmapped_area = uvc_v4l2_get_unmapped_area,
+ .get_unmapped_area = vb2_fop_get_unmapped_area,
#endif
};
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index e3567aeb0007..a5013a7fbca4 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -262,6 +262,15 @@ static void uvc_fixup_video_ctrl(struct uvc_streaming *stream,
ctrl->dwMaxPayloadTransferSize = bandwidth;
}
+
+ if (stream->intf->num_altsetting > 1 &&
+ ctrl->dwMaxPayloadTransferSize > stream->maxpsize) {
+ dev_warn_ratelimited(&stream->intf->dev,
+ "UVC non compliance: the max payload transmission size (%u) exceeds the size of the ep max packet (%u). Using the max size.\n",
+ ctrl->dwMaxPayloadTransferSize,
+ stream->maxpsize);
+ ctrl->dwMaxPayloadTransferSize = stream->maxpsize;
+ }
}
static size_t uvc_video_ctrl_size(struct uvc_streaming *stream)
@@ -1275,20 +1284,6 @@ static inline enum dma_data_direction uvc_stream_dir(
return DMA_TO_DEVICE;
}
-static inline struct device *uvc_stream_to_dmadev(struct uvc_streaming *stream)
-{
- return bus_to_hcd(stream->dev->udev->bus)->self.sysdev;
-}
-
-static int uvc_submit_urb(struct uvc_urb *uvc_urb, gfp_t mem_flags)
-{
- /* Sync DMA. */
- dma_sync_sgtable_for_device(uvc_stream_to_dmadev(uvc_urb->stream),
- uvc_urb->sgt,
- uvc_stream_dir(uvc_urb->stream));
- return usb_submit_urb(uvc_urb->urb, mem_flags);
-}
-
/*
* uvc_video_decode_data_work: Asynchronous memcpy processing
*
@@ -1310,7 +1305,7 @@ static void uvc_video_copy_data_work(struct work_struct *work)
uvc_queue_buffer_release(op->buf);
}
- ret = uvc_submit_urb(uvc_urb, GFP_KERNEL);
+ ret = usb_submit_urb(uvc_urb->urb, GFP_KERNEL);
if (ret < 0)
dev_err(&uvc_urb->stream->intf->dev,
"Failed to resubmit video URB (%d).\n", ret);
@@ -1433,12 +1428,6 @@ static void uvc_video_decode_meta(struct uvc_streaming *stream,
if (!meta_buf || length == 2)
return;
- if (meta_buf->length - meta_buf->bytesused <
- length + sizeof(meta->ns) + sizeof(meta->sof)) {
- meta_buf->error = 1;
- return;
- }
-
has_pts = mem[1] & UVC_STREAM_PTS;
has_scr = mem[1] & UVC_STREAM_SCR;
@@ -1459,6 +1448,12 @@ static void uvc_video_decode_meta(struct uvc_streaming *stream,
!memcmp(scr, stream->clock.last_scr, 6)))
return;
+ if (meta_buf->length - meta_buf->bytesused <
+ length + sizeof(meta->ns) + sizeof(meta->sof)) {
+ meta_buf->error = 1;
+ return;
+ }
+
meta = (struct uvc_meta_buf *)((u8 *)meta_buf->mem + meta_buf->bytesused);
local_irq_save(flags);
time = uvc_video_get_time();
@@ -1736,12 +1731,6 @@ static void uvc_video_complete(struct urb *urb)
/* Re-initialise the URB async work. */
uvc_urb->async_operations = 0;
- /* Sync DMA and invalidate vmap range. */
- dma_sync_sgtable_for_cpu(uvc_stream_to_dmadev(uvc_urb->stream),
- uvc_urb->sgt, uvc_stream_dir(stream));
- invalidate_kernel_vmap_range(uvc_urb->buffer,
- uvc_urb->stream->urb_size);
-
/*
* Process the URB headers, and optionally queue expensive memcpy tasks
* to be deferred to a work queue.
@@ -1750,7 +1739,7 @@ static void uvc_video_complete(struct urb *urb)
/* If no async work is needed, resubmit the URB immediately. */
if (!uvc_urb->async_operations) {
- ret = uvc_submit_urb(uvc_urb, GFP_ATOMIC);
+ ret = usb_submit_urb(uvc_urb->urb, GFP_ATOMIC);
if (ret < 0)
dev_err(&stream->intf->dev,
"Failed to resubmit video URB (%d).\n", ret);
@@ -1765,17 +1754,15 @@ static void uvc_video_complete(struct urb *urb)
*/
static void uvc_free_urb_buffers(struct uvc_streaming *stream)
{
- struct device *dma_dev = uvc_stream_to_dmadev(stream);
+ struct usb_device *udev = stream->dev->udev;
struct uvc_urb *uvc_urb;
for_each_uvc_urb(uvc_urb, stream) {
if (!uvc_urb->buffer)
continue;
- dma_vunmap_noncontiguous(dma_dev, uvc_urb->buffer);
- dma_free_noncontiguous(dma_dev, stream->urb_size, uvc_urb->sgt,
- uvc_stream_dir(stream));
-
+ usb_free_noncoherent(udev, stream->urb_size, uvc_urb->buffer,
+ uvc_stream_dir(stream), uvc_urb->sgt);
uvc_urb->buffer = NULL;
uvc_urb->sgt = NULL;
}
@@ -1786,26 +1773,13 @@ static void uvc_free_urb_buffers(struct uvc_streaming *stream)
static bool uvc_alloc_urb_buffer(struct uvc_streaming *stream,
struct uvc_urb *uvc_urb, gfp_t gfp_flags)
{
- struct device *dma_dev = uvc_stream_to_dmadev(stream);
-
- uvc_urb->sgt = dma_alloc_noncontiguous(dma_dev, stream->urb_size,
- uvc_stream_dir(stream),
- gfp_flags, 0);
- if (!uvc_urb->sgt)
- return false;
- uvc_urb->dma = uvc_urb->sgt->sgl->dma_address;
-
- uvc_urb->buffer = dma_vmap_noncontiguous(dma_dev, stream->urb_size,
- uvc_urb->sgt);
- if (!uvc_urb->buffer) {
- dma_free_noncontiguous(dma_dev, stream->urb_size,
- uvc_urb->sgt,
- uvc_stream_dir(stream));
- uvc_urb->sgt = NULL;
- return false;
- }
+ struct usb_device *udev = stream->dev->udev;
- return true;
+ uvc_urb->buffer = usb_alloc_noncoherent(udev, stream->urb_size,
+ gfp_flags, &uvc_urb->dma,
+ uvc_stream_dir(stream),
+ &uvc_urb->sgt);
+ return !!uvc_urb->buffer;
}
/*
@@ -1953,6 +1927,7 @@ static int uvc_init_video_isoc(struct uvc_streaming *stream,
urb->complete = uvc_video_complete;
urb->number_of_packets = npackets;
urb->transfer_buffer_length = size;
+ urb->sgt = uvc_urb->sgt;
for (i = 0; i < npackets; ++i) {
urb->iso_frame_desc[i].offset = i * psize;
@@ -2009,6 +1984,7 @@ static int uvc_init_video_bulk(struct uvc_streaming *stream,
size, uvc_video_complete, uvc_urb);
urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
urb->transfer_dma = uvc_urb->dma;
+ urb->sgt = uvc_urb->sgt;
uvc_urb->urb = urb;
}
@@ -2120,7 +2096,7 @@ static int uvc_video_start_transfer(struct uvc_streaming *stream,
/* Submit the URBs. */
for_each_uvc_urb(uvc_urb, stream) {
- ret = uvc_submit_urb(uvc_urb, gfp_flags);
+ ret = usb_submit_urb(uvc_urb->urb, gfp_flags);
if (ret < 0) {
dev_err(&stream->intf->dev,
"Failed to submit URB %u (%d).\n",
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index b9f8eb62ba1d..757254fc4fe9 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -77,6 +77,7 @@
#define UVC_QUIRK_DISABLE_AUTOSUSPEND 0x00008000
#define UVC_QUIRK_INVALID_DEVICE_SOF 0x00010000
#define UVC_QUIRK_MJPEG_NO_EOF 0x00020000
+#define UVC_QUIRK_MSXU_META 0x00040000
/* Format flags */
#define UVC_FMT_FLAG_COMPRESSED 0x00000001
@@ -134,6 +135,8 @@ struct uvc_control_mapping {
s32 master_manual;
u32 slave_ids[2];
+ bool disabled;
+
const struct uvc_control_mapping *(*filter_mapping)
(struct uvc_video_chain *chain,
struct uvc_control *ctrl);
@@ -326,7 +329,10 @@ struct uvc_buffer {
struct uvc_video_queue {
struct vb2_queue queue;
- struct mutex mutex; /* Protects queue */
+ struct mutex mutex; /*
+ * Serializes vb2_queue and
+ * fops
+ */
unsigned int flags;
unsigned int buf_used;
@@ -570,6 +576,8 @@ struct uvc_status {
};
} __packed;
+#define UVC_MAX_META_DATA_FORMATS 3
+
struct uvc_device {
struct usb_device *udev;
struct usb_interface *intf;
@@ -580,6 +588,9 @@ struct uvc_device {
const struct uvc_device_info *info;
+ u32 meta_formats[UVC_MAX_META_DATA_FORMATS];
+ unsigned int nmeta_formats;
+
atomic_t nmappings;
/* Video control interface */
@@ -619,18 +630,11 @@ struct uvc_device {
struct uvc_entity *gpio_unit;
};
-enum uvc_handle_state {
- UVC_HANDLE_PASSIVE = 0,
- UVC_HANDLE_ACTIVE = 1,
-};
-
struct uvc_fh {
struct v4l2_fh vfh;
struct uvc_video_chain *chain;
struct uvc_streaming *stream;
- enum uvc_handle_state state;
unsigned int pending_async_ctrls;
- bool is_streaming;
};
/* ------------------------------------------------------------------------
@@ -687,36 +691,11 @@ struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
/* Video buffers queue management. */
int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type);
-void uvc_queue_release(struct uvc_video_queue *queue);
-int uvc_request_buffers(struct uvc_video_queue *queue,
- struct v4l2_requestbuffers *rb);
-int uvc_query_buffer(struct uvc_video_queue *queue,
- struct v4l2_buffer *v4l2_buf);
-int uvc_create_buffers(struct uvc_video_queue *queue,
- struct v4l2_create_buffers *v4l2_cb);
-int uvc_queue_buffer(struct uvc_video_queue *queue,
- struct media_device *mdev,
- struct v4l2_buffer *v4l2_buf);
-int uvc_export_buffer(struct uvc_video_queue *queue,
- struct v4l2_exportbuffer *exp);
-int uvc_dequeue_buffer(struct uvc_video_queue *queue,
- struct v4l2_buffer *v4l2_buf, int nonblocking);
-int uvc_queue_streamon(struct uvc_video_queue *queue, enum v4l2_buf_type type);
-int uvc_queue_streamoff(struct uvc_video_queue *queue, enum v4l2_buf_type type);
void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
struct uvc_buffer *buf);
struct uvc_buffer *uvc_queue_get_current_buffer(struct uvc_video_queue *queue);
void uvc_queue_buffer_release(struct uvc_buffer *buf);
-int uvc_queue_mmap(struct uvc_video_queue *queue,
- struct vm_area_struct *vma);
-__poll_t uvc_queue_poll(struct uvc_video_queue *queue, struct file *file,
- poll_table *wait);
-#ifndef CONFIG_MMU
-unsigned long uvc_queue_get_unmapped_area(struct uvc_video_queue *queue,
- unsigned long pgoff);
-#endif
-int uvc_queue_allocated(struct uvc_video_queue *queue);
static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
{
return vb2_is_streaming(&queue->queue);
@@ -749,6 +728,7 @@ int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit,
void uvc_video_clock_update(struct uvc_streaming *stream,
struct vb2_v4l2_buffer *vbuf,
struct uvc_buffer *buf);
+int uvc_meta_init(struct uvc_device *dev);
int uvc_meta_register(struct uvc_streaming *stream);
int uvc_register_video_device(struct uvc_device *dev,
generated by cgit (git 2.34.1) at 2025-08-01 14:47:33 +0000