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path: root/drivers/media/v4l2-core/v4l2-ioctl.c
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Diffstat (limited to 'drivers/media/v4l2-core/v4l2-ioctl.c')
-rw-r--r--drivers/media/v4l2-core/v4l2-ioctl.c121
1 files changed, 83 insertions, 38 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 170dd68d27f4..c52d94c018bb 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -924,6 +924,7 @@ static int check_fmt(struct file *file, enum v4l2_buf_type type)
bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
+ bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
@@ -932,7 +933,7 @@ static int check_fmt(struct file *file, enum v4l2_buf_type type)
switch (type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- if (is_vid && is_rx &&
+ if ((is_vid || is_tch) && is_rx &&
(ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
return 0;
break;
@@ -1020,9 +1021,12 @@ static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
struct v4l2_capability *cap = (struct v4l2_capability *)arg;
+ struct video_device *vfd = video_devdata(file);
int ret;
cap->version = LINUX_VERSION_CODE;
+ cap->device_caps = vfd->device_caps;
+ cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
ret = ops->vidioc_querycap(file, fh, cap);
@@ -1240,6 +1244,10 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
+ case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit signed deltas"; break;
+ case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit signed deltas"; break;
+ case V4L2_TCH_FMT_TU16: descr = "16-bit unsigned touch data"; break;
+ case V4L2_TCH_FMT_TU08: descr = "8-bit unsigned touch data"; break;
default:
/* Compressed formats */
@@ -1306,13 +1314,14 @@ static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
struct video_device *vfd = video_devdata(file);
bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
+ bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
int ret = -EINVAL;
switch (p->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap))
+ if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_enum_fmt_vid_cap))
break;
ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
break;
@@ -1359,6 +1368,7 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
struct video_device *vfd = video_devdata(file);
bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
+ bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
int ret;
@@ -1389,7 +1399,7 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
switch (p->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap))
+ if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_g_fmt_vid_cap))
break;
p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
@@ -1448,6 +1458,21 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
return -EINVAL;
}
+static void v4l_pix_format_touch(struct v4l2_pix_format *p)
+{
+ /*
+ * The v4l2_pix_format structure contains fields that make no sense for
+ * touch. Set them to default values in this case.
+ */
+
+ p->field = V4L2_FIELD_NONE;
+ p->colorspace = V4L2_COLORSPACE_RAW;
+ p->flags = 0;
+ p->ycbcr_enc = 0;
+ p->quantization = 0;
+ p->xfer_func = 0;
+}
+
static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
@@ -1455,6 +1480,7 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
struct video_device *vfd = video_devdata(file);
bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
+ bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
int ret;
@@ -1466,17 +1492,19 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
switch (p->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap))
+ if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_s_fmt_vid_cap))
break;
CLEAR_AFTER_FIELD(p, fmt.pix);
ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
/* just in case the driver zeroed it again */
p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
+ if (is_tch)
+ v4l_pix_format_touch(&p->fmt.pix);
return ret;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
break;
- CLEAR_AFTER_FIELD(p, fmt.pix_mp);
+ CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
@@ -1504,7 +1532,7 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
break;
- CLEAR_AFTER_FIELD(p, fmt.pix_mp);
+ CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
@@ -1542,6 +1570,7 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
struct video_device *vfd = video_devdata(file);
bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
+ bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
int ret;
@@ -1550,7 +1579,7 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
switch (p->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
- if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap))
+ if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_try_fmt_vid_cap))
break;
CLEAR_AFTER_FIELD(p, fmt.pix);
ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
@@ -1560,7 +1589,7 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
break;
- CLEAR_AFTER_FIELD(p, fmt.pix_mp);
+ CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
@@ -1588,7 +1617,7 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
break;
- CLEAR_AFTER_FIELD(p, fmt.pix_mp);
+ CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
@@ -2157,40 +2186,56 @@ static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
struct v4l2_cropcap *p = arg;
+ struct v4l2_selection s = { .type = p->type };
+ int ret = 0;
- if (ops->vidioc_g_selection) {
- struct v4l2_selection s = { .type = p->type };
- int ret;
+ /* setting trivial pixelaspect */
+ p->pixelaspect.numerator = 1;
+ p->pixelaspect.denominator = 1;
- /* obtaining bounds */
- if (V4L2_TYPE_IS_OUTPUT(p->type))
- s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
- else
- s.target = V4L2_SEL_TGT_CROP_BOUNDS;
+ /*
+ * The determine_valid_ioctls() call already should ensure
+ * that this can never happen, but just in case...
+ */
+ if (WARN_ON(!ops->vidioc_cropcap && !ops->vidioc_g_selection))
+ return -ENOTTY;
- ret = ops->vidioc_g_selection(file, fh, &s);
- if (ret)
- return ret;
- p->bounds = s.r;
+ if (ops->vidioc_cropcap)
+ ret = ops->vidioc_cropcap(file, fh, p);
- /* obtaining defrect */
- if (V4L2_TYPE_IS_OUTPUT(p->type))
- s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
- else
- s.target = V4L2_SEL_TGT_CROP_DEFAULT;
+ if (!ops->vidioc_g_selection)
+ return ret;
- ret = ops->vidioc_g_selection(file, fh, &s);
- if (ret)
- return ret;
- p->defrect = s.r;
- }
+ /*
+ * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
+ * square pixel aspect ratio in that case.
+ */
+ if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
+ return ret;
- /* setting trivial pixelaspect */
- p->pixelaspect.numerator = 1;
- p->pixelaspect.denominator = 1;
+ /* Use g_selection() to fill in the bounds and defrect rectangles */
- if (ops->vidioc_cropcap)
- return ops->vidioc_cropcap(file, fh, p);
+ /* obtaining bounds */
+ if (V4L2_TYPE_IS_OUTPUT(p->type))
+ s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
+ else
+ s.target = V4L2_SEL_TGT_CROP_BOUNDS;
+
+ ret = ops->vidioc_g_selection(file, fh, &s);
+ if (ret)
+ return ret;
+ p->bounds = s.r;
+
+ /* obtaining defrect */
+ if (V4L2_TYPE_IS_OUTPUT(p->type))
+ s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
+ else
+ s.target = V4L2_SEL_TGT_CROP_DEFAULT;
+
+ ret = ops->vidioc_g_selection(file, fh, &s);
+ if (ret)
+ return ret;
+ p->defrect = s.r;
return 0;
}
@@ -2522,14 +2567,14 @@ static struct v4l2_ioctl_info v4l2_ioctls[] = {
IOCTL_INFO_FNC(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
IOCTL_INFO_FNC(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
IOCTL_INFO_FNC(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
- IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO),
+ IOCTL_INFO_STD(VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)),
IOCTL_INFO_STD(VIDIOC_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
IOCTL_INFO_FNC(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
IOCTL_INFO_FNC(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
IOCTL_INFO_FNC(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
IOCTL_INFO_FNC(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
IOCTL_INFO_FNC(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
- IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, 0),
+ IOCTL_INFO_STD(VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
IOCTL_INFO_STD(VIDIOC_QUERY_DV_TIMINGS, vidioc_query_dv_timings, v4l_print_dv_timings, 0),
IOCTL_INFO_STD(VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, type)),
IOCTL_INFO_FNC(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-15 06:30:18 +0000