From e6bee3685e732df82f48698254a36754cf15f0b0 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 10 Jun 2014 04:22:06 -0300 Subject: [PATCH] [media] v4l2: integrate support for VIDIOC_QUERY_EXT_CTRL Add the v4l2 core plumbing for the new VIDIOC_QUERY_EXT_CTRL ioctl. Signed-off-by: Hans Verkuil Reviewed-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/v4l2-dev.c | 2 ++ drivers/media/v4l2-core/v4l2-ioctl.c | 33 +++++++++++++++++++++++++++ drivers/media/v4l2-core/v4l2-subdev.c | 3 +++ include/media/v4l2-ioctl.h | 2 ++ 4 files changed, 40 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 35698aa377f5..1cfdbdd034bc 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -575,6 +575,8 @@ static void determine_valid_ioctls(struct video_device *vdev) be valid if the filehandle passed the control handler. */ if (vdev->ctrl_handler || ops->vidioc_queryctrl) set_bit(_IOC_NR(VIDIOC_QUERYCTRL), valid_ioctls); + if (vdev->ctrl_handler || ops->vidioc_query_ext_ctrl) + set_bit(_IOC_NR(VIDIOC_QUERY_EXT_CTRL), valid_ioctls); if (vdev->ctrl_handler || ops->vidioc_g_ctrl || ops->vidioc_g_ext_ctrls) set_bit(_IOC_NR(VIDIOC_G_CTRL), valid_ioctls); if (vdev->ctrl_handler || ops->vidioc_s_ctrl || ops->vidioc_s_ext_ctrls) diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 8d4a25d62e47..c38a6208d2cd 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -525,6 +525,21 @@ static void v4l_print_queryctrl(const void *arg, bool write_only) p->step, p->default_value, p->flags); } +static void v4l_print_query_ext_ctrl(const void *arg, bool write_only) +{ + const struct v4l2_query_ext_ctrl *p = arg; + + pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, " + "step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, " + "nr_of_dims=%u, dims=%u,%u,%u,%u,%u,%u,%u,%u\n", + p->id, p->type, (int)sizeof(p->name), p->name, + p->minimum, p->maximum, + p->step, p->default_value, p->flags, + p->elem_size, p->elems, p->nr_of_dims, + p->dims[0], p->dims[1], p->dims[2], p->dims[3], + p->dims[4], p->dims[5], p->dims[6], p->dims[7]); +} + static void v4l_print_querymenu(const void *arg, bool write_only) { const struct v4l2_querymenu *p = arg; @@ -1561,6 +1576,23 @@ static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, return -ENOTTY; } +static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops, + struct file *file, void *fh, void *arg) +{ + struct video_device *vfd = video_devdata(file); + struct v4l2_query_ext_ctrl *p = arg; + struct v4l2_fh *vfh = + test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL; + + if (vfh && vfh->ctrl_handler) + return v4l2_query_ext_ctrl(vfh->ctrl_handler, p); + if (vfd->ctrl_handler) + return v4l2_query_ext_ctrl(vfd->ctrl_handler, p); + if (ops->vidioc_query_ext_ctrl) + return ops->vidioc_query_ext_ctrl(file, fh, p); + return -ENOTTY; +} + static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { @@ -2121,6 +2153,7 @@ static struct v4l2_ioctl_info v4l2_ioctls[] = { 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), IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)), + IOCTL_INFO_FNC(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)), }; #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 058c1a6e8392..b984f33de7f4 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -139,6 +139,9 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) case VIDIOC_QUERYCTRL: return v4l2_queryctrl(vfh->ctrl_handler, arg); + case VIDIOC_QUERY_EXT_CTRL: + return v4l2_query_ext_ctrl(vfh->ctrl_handler, arg); + case VIDIOC_QUERYMENU: return v4l2_querymenu(vfh->ctrl_handler, arg); diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h index 50cf7c110a70..53605f0f9903 100644 --- a/include/media/v4l2-ioctl.h +++ b/include/media/v4l2-ioctl.h @@ -158,6 +158,8 @@ struct v4l2_ioctl_ops { /* Control handling */ int (*vidioc_queryctrl) (struct file *file, void *fh, struct v4l2_queryctrl *a); + int (*vidioc_query_ext_ctrl) (struct file *file, void *fh, + struct v4l2_query_ext_ctrl *a); int (*vidioc_g_ctrl) (struct file *file, void *fh, struct v4l2_control *a); int (*vidioc_s_ctrl) (struct file *file, void *fh, -- 2.20.1