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Input: synaptics-rmi4 - fix various V4L2 compliance problems in F54

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The v4l2-compliance utility reported several V4L2 API compliance
issues:

- the sequence counter wasn't filled in
- the sequence counter wasn't reset to 0 at the start of streaming
- the returned field value wasn't set to V4L2_FIELD_NONE
- the timestamp wasn't set
- the payload size was undefined if an error was returned
- min_buffers_needed doesn't need to be initialized

Fix these issues.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de
Link: https://lore.kernel.org/r/20191119105118.54285-3-hverkuil-cisco@xs4all.nl
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Hans Verkuil 2019-11-22 16:17:47 -08:00 committed by Dmitry Torokhov
parent fc1156f373
commit 71c296f6d5
1 changed files with 14 additions and 1 deletions
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15
drivers/input/rmi4/rmi_f54.c
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@ -110,6 +110,7 @@ struct f54_data {
struct video_device vdev;
struct vb2_queue queue;
struct mutex lock;
u32 sequence;
int input;
enum rmi_f54_report_type inputs[F54_MAX_REPORT_TYPE];
};
@ -284,6 +285,7 @@ static int rmi_f54_queue_setup(struct vb2_queue *q, unsigned int *nbuffers,
static void rmi_f54_buffer_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct f54_data *f54 = vb2_get_drv_priv(vb->vb2_queue);
u16 *ptr;
enum vb2_buffer_state state;
@ -292,6 +294,7 @@ static void rmi_f54_buffer_queue(struct vb2_buffer *vb)
mutex_lock(&f54->status_mutex);
vb2_set_plane_payload(vb, 0, 0);
reptype = rmi_f54_get_reptype(f54, f54->input);
if (reptype == F54_REPORT_NONE) {
state = VB2_BUF_STATE_ERROR;
@ -338,14 +341,25 @@ static void rmi_f54_buffer_queue(struct vb2_buffer *vb)
data_done:
mutex_unlock(&f54->data_mutex);
done:
vb->timestamp = ktime_get_ns();
vbuf->field = V4L2_FIELD_NONE;
vbuf->sequence = f54->sequence++;
vb2_buffer_done(vb, state);
mutex_unlock(&f54->status_mutex);
}
static void rmi_f54_stop_streaming(struct vb2_queue *q)
{
struct f54_data *f54 = vb2_get_drv_priv(q);
f54->sequence = 0;
}
/* V4L2 structures */
static const struct vb2_ops rmi_f54_queue_ops = {
.queue_setup = rmi_f54_queue_setup,
.buf_queue = rmi_f54_buffer_queue,
.stop_streaming = rmi_f54_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
@ -357,7 +371,6 @@ static const struct vb2_queue rmi_f54_queue = {
.ops = &rmi_f54_queue_ops,
.mem_ops = &vb2_vmalloc_memops,
.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC,
.min_buffers_needed = 1,
};
static int rmi_f54_vidioc_querycap(struct file *file, void *priv,