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Diffstat (limited to 'samples/v4l/v4l2-pci-skeleton.c')
-rw-r--r--samples/v4l/v4l2-pci-skeleton.c79
1 files changed, 34 insertions, 45 deletions
diff --git a/samples/v4l/v4l2-pci-skeleton.c b/samples/v4l/v4l2-pci-skeleton.c
index 93b76c3220fd..69925d30329e 100644
--- a/samples/v4l/v4l2-pci-skeleton.c
+++ b/samples/v4l/v4l2-pci-skeleton.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* This is a V4L2 PCI Skeleton Driver. It gives an initial skeleton source
* for use with other PCI drivers.
@@ -6,19 +7,6 @@
* input 0 and an HDMI connector as input 1.
*
* Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
- *
- * This program is free software; you may redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
*/
#include <linux/types.h>
@@ -58,6 +46,7 @@ MODULE_LICENSE("GPL v2");
* @queue: vb2 video capture queue
* @qlock: spinlock controlling access to buf_list and sequence
* @buf_list: list of buffers queued for DMA
+ * @field: the field (TOP/BOTTOM/other) of the current buffer
* @sequence: frame sequence counter
*/
struct skeleton {
@@ -80,13 +69,13 @@ struct skeleton {
};
struct skel_buffer {
- struct vb2_buffer vb;
+ struct vb2_v4l2_buffer vb;
struct list_head list;
};
-static inline struct skel_buffer *to_skel_buffer(struct vb2_buffer *vb2)
+static inline struct skel_buffer *to_skel_buffer(struct vb2_v4l2_buffer *vbuf)
{
- return container_of(vb2, struct skel_buffer, vb);
+ return container_of(vbuf, struct skel_buffer, vb);
}
static const struct pci_device_id skeleton_pci_tbl[] = {
@@ -139,16 +128,16 @@ static irqreturn_t skeleton_irq(int irq, void *dev_id)
spin_lock(&skel->qlock);
list_del(&new_buf->list);
spin_unlock(&skel->qlock);
- v4l2_get_timestamp(&new_buf->vb.v4l2_buf.timestamp);
- new_buf->vb.v4l2_buf.sequence = skel->sequence++;
- new_buf->vb.v4l2_buf.field = skel->field;
+ new_buf->vb.vb2_buf.timestamp = ktime_get_ns();
+ new_buf->vb.sequence = skel->sequence++;
+ new_buf->vb.field = skel->field;
if (skel->format.field == V4L2_FIELD_ALTERNATE) {
if (skel->field == V4L2_FIELD_BOTTOM)
skel->field = V4L2_FIELD_TOP;
else if (skel->field == V4L2_FIELD_TOP)
skel->field = V4L2_FIELD_BOTTOM;
}
- vb2_buffer_done(&new_buf->vb, VB2_BUF_STATE_DONE);
+ vb2_buffer_done(&new_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
}
#endif
return IRQ_HANDLED;
@@ -166,6 +155,7 @@ static int queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct skeleton *skel = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
skel->field = skel->format.field;
if (skel->field == V4L2_FIELD_ALTERNATE) {
@@ -178,8 +168,8 @@ static int queue_setup(struct vb2_queue *vq,
skel->field = V4L2_FIELD_TOP;
}
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes)
return sizes[0] < skel->format.sizeimage ? -EINVAL : 0;
@@ -212,8 +202,9 @@ static int buffer_prepare(struct vb2_buffer *vb)
*/
static void buffer_queue(struct vb2_buffer *vb)
{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct skeleton *skel = vb2_get_drv_priv(vb->vb2_queue);
- struct skel_buffer *buf = to_skel_buffer(vb);
+ struct skel_buffer *buf = to_skel_buffer(vbuf);
unsigned long flags;
spin_lock_irqsave(&skel->qlock, flags);
@@ -232,7 +223,7 @@ static void return_all_buffers(struct skeleton *skel,
spin_lock_irqsave(&skel->qlock, flags);
list_for_each_entry_safe(buf, node, &skel->buf_list, list) {
- vb2_buffer_done(&buf->vb, state);
+ vb2_buffer_done(&buf->vb.vb2_buf, state);
list_del(&buf->list);
}
spin_unlock_irqrestore(&skel->qlock, flags);
@@ -278,18 +269,14 @@ static void stop_streaming(struct vb2_queue *vq)
}
/*
- * The vb2 queue ops. Note that since q->lock is set we can use the standard
- * vb2_ops_wait_prepare/finish helper functions. If q->lock would be NULL,
- * then this driver would have to provide these ops.
+ * The vb2 queue ops.
*/
-static struct vb2_ops skel_qops = {
+static const struct vb2_ops skel_qops = {
.queue_setup = queue_setup,
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
.start_streaming = start_streaming,
.stop_streaming = stop_streaming,
- .wait_prepare = vb2_ops_wait_prepare,
- .wait_finish = vb2_ops_wait_finish,
};
/*
@@ -301,8 +288,8 @@ static int skeleton_querycap(struct file *file, void *priv,
{
struct skeleton *skel = video_drvdata(file);
- strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
- strlcpy(cap->card, "V4L2 PCI Skeleton", sizeof(cap->card));
+ strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
+ strscpy(cap->card, "V4L2 PCI Skeleton", sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
pci_name(skel->pdev));
return 0;
@@ -483,7 +470,7 @@ static int skeleton_querystd(struct file *file, void *priv, v4l2_std_id *std)
return 0;
}
-static int skeleton_s_dv_timings(struct file *file, void *_fh,
+static int skeleton_s_dv_timings(struct file *file, void *priv,
struct v4l2_dv_timings *timings)
{
struct skeleton *skel = video_drvdata(file);
@@ -522,7 +509,7 @@ static int skeleton_s_dv_timings(struct file *file, void *_fh,
return 0;
}
-static int skeleton_g_dv_timings(struct file *file, void *_fh,
+static int skeleton_g_dv_timings(struct file *file, void *priv,
struct v4l2_dv_timings *timings)
{
struct skeleton *skel = video_drvdata(file);
@@ -535,7 +522,7 @@ static int skeleton_g_dv_timings(struct file *file, void *_fh,
return 0;
}
-static int skeleton_enum_dv_timings(struct file *file, void *_fh,
+static int skeleton_enum_dv_timings(struct file *file, void *priv,
struct v4l2_enum_dv_timings *timings)
{
struct skeleton *skel = video_drvdata(file);
@@ -557,7 +544,7 @@ static int skeleton_enum_dv_timings(struct file *file, void *_fh,
* can lock but that the DMA engine it is connected to cannot handle
* pixelclocks above a certain frequency), then -ERANGE is returned.
*/
-static int skeleton_query_dv_timings(struct file *file, void *_fh,
+static int skeleton_query_dv_timings(struct file *file, void *priv,
struct v4l2_dv_timings *timings)
{
struct skeleton *skel = video_drvdata(file);
@@ -586,7 +573,7 @@ static int skeleton_query_dv_timings(struct file *file, void *_fh,
return 0;
}
-static int skeleton_dv_timings_cap(struct file *file, void *fh,
+static int skeleton_dv_timings_cap(struct file *file, void *priv,
struct v4l2_dv_timings_cap *cap)
{
struct skeleton *skel = video_drvdata(file);
@@ -607,11 +594,11 @@ static int skeleton_enum_input(struct file *file, void *priv,
i->type = V4L2_INPUT_TYPE_CAMERA;
if (i->index == 0) {
i->std = SKEL_TVNORMS;
- strlcpy(i->name, "S-Video", sizeof(i->name));
+ strscpy(i->name, "S-Video", sizeof(i->name));
i->capabilities = V4L2_IN_CAP_STD;
} else {
i->std = 0;
- strlcpy(i->name, "HDMI", sizeof(i->name));
+ strscpy(i->name, "HDMI", sizeof(i->name));
i->capabilities = V4L2_IN_CAP_DV_TIMINGS;
}
return 0;
@@ -764,7 +751,7 @@ static int skeleton_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
ret = pci_enable_device(pdev);
if (ret)
return ret;
- ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret) {
dev_err(&pdev->dev, "no suitable DMA available.\n");
goto disable_pci;
@@ -772,8 +759,10 @@ static int skeleton_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
/* Allocate a new instance */
skel = devm_kzalloc(&pdev->dev, sizeof(struct skeleton), GFP_KERNEL);
- if (!skel)
- return -ENOMEM;
+ if (!skel) {
+ ret = -ENOMEM;
+ goto disable_pci;
+ }
/* Allocate the interrupt */
ret = devm_request_irq(&pdev->dev, pdev->irq,
@@ -828,7 +817,7 @@ static int skeleton_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
* available before it can be started. The start_streaming() op
* won't be called until at least this many buffers are queued up.
*/
- q->min_buffers_needed = 2;
+ q->min_queued_buffers = 2;
/*
* The serialization lock for the streaming ioctls. This is the same
* as the main serialization lock, but if some of the non-streaming
@@ -853,7 +842,7 @@ static int skeleton_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
/* Initialize the video_device structure */
vdev = &skel->vdev;
- strlcpy(vdev->name, KBUILD_MODNAME, sizeof(vdev->name));
+ strscpy(vdev->name, KBUILD_MODNAME, sizeof(vdev->name));
/*
* There is nothing to clean up, so release is set to an empty release
* function. The release callback must be non-NULL.
@@ -875,7 +864,7 @@ static int skeleton_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
vdev->tvnorms = SKEL_TVNORMS;
video_set_drvdata(vdev, skel);
- ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
+ ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
if (ret)
goto free_hdl;
generated by cgit (git 2.34.1) at 2025-12-25 01:13:32 +0000