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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.c83
1 files changed, 13 insertions, 70 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 7658586fe5f4..68e6b5e912ff 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -26,7 +26,6 @@
#include <media/v4l2-fh.h>
#include <media/v4l2-event.h>
#include <media/v4l2-device.h>
-#include <media/v4l2-chip-ident.h>
#include <media/videobuf2-core.h>
/* Zero out the end of the struct pointed to by p. Everything after, but
@@ -619,20 +618,6 @@ static void v4l_print_decoder_cmd(const void *arg, bool write_only)
pr_info("pts=%llu\n", p->stop.pts);
}
-static void v4l_print_dbg_chip_ident(const void *arg, bool write_only)
-{
- const struct v4l2_dbg_chip_ident *p = arg;
-
- pr_cont("type=%u, ", p->match.type);
- if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
- pr_cont("name=%.*s, ",
- (int)sizeof(p->match.name), p->match.name);
- else
- pr_cont("addr=%u, ", p->match.addr);
- pr_cont("chip_ident=%u, revision=0x%x\n",
- p->ident, p->revision);
-}
-
static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
{
const struct v4l2_dbg_chip_info *p = arg;
@@ -1359,40 +1344,18 @@ static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
return 0;
}
-static int v4l_g_std(const struct v4l2_ioctl_ops *ops,
- struct file *file, void *fh, void *arg)
-{
- struct video_device *vfd = video_devdata(file);
- v4l2_std_id *id = arg;
-
- /* Calls the specific handler */
- if (ops->vidioc_g_std)
- return ops->vidioc_g_std(file, fh, arg);
- if (vfd->current_norm) {
- *id = vfd->current_norm;
- return 0;
- }
- return -ENOTTY;
-}
-
static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
struct video_device *vfd = video_devdata(file);
v4l2_std_id id = *(v4l2_std_id *)arg, norm;
- int ret;
norm = id & vfd->tvnorms;
if (vfd->tvnorms && !norm) /* Check if std is supported */
return -EINVAL;
/* Calls the specific handler */
- ret = ops->vidioc_s_std(file, fh, norm);
-
- /* Updates standard information */
- if (ret >= 0)
- vfd->current_norm = norm;
- return ret;
+ return ops->vidioc_s_std(file, fh, norm);
}
static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
@@ -1402,10 +1365,10 @@ static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
v4l2_std_id *p = arg;
/*
- * If nothing detected, it should return all supported
- * standard.
- * Drivers just need to mask the std argument, in order
- * to remove the standards that don't apply from the mask.
+ * If no signal is detected, then the driver should return
+ * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
+ * any standards that do not apply removed.
+ *
* This means that tuners, audio and video decoders can join
* their efforts to improve the standards detection.
*/
@@ -1495,7 +1458,6 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
- struct video_device *vfd = video_devdata(file);
struct v4l2_streamparm *p = arg;
v4l2_std_id std;
int ret = check_fmt(file, p->type);
@@ -1504,16 +1466,13 @@ static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
return ret;
if (ops->vidioc_g_parm)
return ops->vidioc_g_parm(file, fh, p);
- std = vfd->current_norm;
if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
return -EINVAL;
p->parm.capture.readbuffers = 2;
- if (is_valid_ioctl(vfd, VIDIOC_G_STD) && ops->vidioc_g_std)
- ret = ops->vidioc_g_std(file, fh, &std);
+ ret = ops->vidioc_g_std(file, fh, &std);
if (ret == 0)
- v4l2_video_std_frame_period(std,
- &p->parm.capture.timeperframe);
+ v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
return ret;
}
@@ -1802,7 +1761,8 @@ static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
return v4l2_subdev_call(sd, core, g_register, p);
return -EINVAL;
}
- if (ops->vidioc_g_register)
+ if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
+ (ops->vidioc_g_chip_info || p->match.addr == 0))
return ops->vidioc_g_register(file, fh, p);
return -EINVAL;
#else
@@ -1829,7 +1789,8 @@ static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
return v4l2_subdev_call(sd, core, s_register, p);
return -EINVAL;
}
- if (ops->vidioc_s_register)
+ if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
+ (ops->vidioc_g_chip_info || p->match.addr == 0))
return ops->vidioc_s_register(file, fh, p);
return -EINVAL;
#else
@@ -1837,18 +1798,6 @@ static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
#endif
}
-static int v4l_dbg_g_chip_ident(const struct v4l2_ioctl_ops *ops,
- struct file *file, void *fh, void *arg)
-{
- struct v4l2_dbg_chip_ident *p = arg;
-
- p->ident = V4L2_IDENT_NONE;
- p->revision = 0;
- if (p->match.type == V4L2_CHIP_MATCH_SUBDEV)
- return -EINVAL;
- return ops->vidioc_g_chip_ident(file, fh, p);
-}
-
static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
@@ -1864,12 +1813,7 @@ static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
p->flags |= V4L2_CHIP_FL_WRITABLE;
if (ops->vidioc_g_register)
p->flags |= V4L2_CHIP_FL_READABLE;
- if (vfd->v4l2_dev)
- strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
- else if (vfd->parent)
- strlcpy(p->name, vfd->parent->driver->name, sizeof(p->name));
- else
- strlcpy(p->name, "bridge", sizeof(p->name));
+ strlcpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
if (ops->vidioc_g_chip_info)
return ops->vidioc_g_chip_info(file, fh, arg);
if (p->match.addr)
@@ -2048,7 +1992,7 @@ static struct v4l2_ioctl_info v4l2_ioctls[] = {
IOCTL_INFO_FNC(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
IOCTL_INFO_FNC(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
IOCTL_INFO_FNC(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
- IOCTL_INFO_FNC(VIDIOC_G_STD, v4l_g_std, v4l_print_std, 0),
+ IOCTL_INFO_STD(VIDIOC_G_STD, vidioc_g_std, v4l_print_std, 0),
IOCTL_INFO_FNC(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
IOCTL_INFO_FNC(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
IOCTL_INFO_FNC(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
@@ -2098,7 +2042,6 @@ static struct v4l2_ioctl_info v4l2_ioctls[] = {
IOCTL_INFO_STD(VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd, v4l_print_decoder_cmd, 0),
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_DBG_G_CHIP_IDENT, v4l_dbg_g_chip_ident, v4l_print_dbg_chip_ident, 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_G_DV_TIMINGS, vidioc_g_dv_timings, v4l_print_dv_timings, 0),
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.