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[media] media/core: Replace ctrl_class with which

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Replace the obsolete field ctrl_class with "which".

Make sure it not used in future modules by commenting out the field with
ifndef __KERNEL_ .

The field cannot be simply removed because that would be change on the
kenel API to the userspace (and we don't like that).

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Ricardo Ribalda 2015-10-29 08:10:28 -02:00 committed by Mauro Carvalho Chehab
parent 35ec2a2fa5
commit 0f8017bebf
7 changed files with 32 additions and 27 deletions
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6
Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
View file

@ -61,7 +61,7 @@ must belong to the same control class.</para>
<para>Applications must always fill in the
<structfield>count</structfield>,
<structfield>ctrl_class</structfield>,
<structfield>which</structfield>,
<structfield>controls</structfield> and
<structfield>reserved</structfield> fields of &v4l2-ext-controls;, and
initialize the &v4l2-ext-control; array pointed to by the
@ -109,7 +109,7 @@ the driver whether wrong values are automatically adjusted to a valid
value or if an error is returned.</para>
<para>When the <structfield>id</structfield> or
<structfield>ctrl_class</structfield> is invalid drivers return an
<structfield>which</structfield> is invalid drivers return an
&EINVAL;. When the value is out of bounds drivers can choose to take
the closest valid value or return an &ERANGE;, whatever seems more
appropriate. In the first case the new value is set in
@ -390,7 +390,7 @@ These controls are described in <xref linkend="rf-tuner-controls" />.</entry>
<listitem>
<para>The &v4l2-ext-control; <structfield>id</structfield>
is invalid, the &v4l2-ext-controls;
<structfield>ctrl_class</structfield> is invalid, or the &v4l2-ext-control;
<structfield>which</structfield> is invalid, or the &v4l2-ext-control;
<structfield>value</structfield> was inappropriate (e.g. the given menu
index is not supported by the driver). This error code is
also returned by the <constant>VIDIOC_S_EXT_CTRLS</constant> and

2
drivers/media/platform/s5p-mfc/s5p_mfc_dec.c
View file

@ -1119,7 +1119,7 @@ const struct v4l2_ioctl_ops *get_dec_v4l2_ioctl_ops(void)
return &s5p_mfc_dec_ioctl_ops;
}
#define IS_MFC51_PRIV(x) ((V4L2_CTRL_ID2CLASS(x) == V4L2_CTRL_CLASS_MPEG) \
#define IS_MFC51_PRIV(x) ((V4L2_CTRL_ID2WHICH(x) == V4L2_CTRL_CLASS_MPEG) \
&& V4L2_CTRL_DRIVER_PRIV(x))
int s5p_mfc_dec_ctrls_setup(struct s5p_mfc_ctx *ctx)

2
drivers/media/platform/s5p-mfc/s5p_mfc_enc.c
View file

@ -2067,7 +2067,7 @@ const struct v4l2_ioctl_ops *get_enc_v4l2_ioctl_ops(void)
return &s5p_mfc_enc_ioctl_ops;
}
#define IS_MFC51_PRIV(x) ((V4L2_CTRL_ID2CLASS(x) == V4L2_CTRL_CLASS_MPEG) \
#define IS_MFC51_PRIV(x) ((V4L2_CTRL_ID2WHICH(x) == V4L2_CTRL_CLASS_MPEG) \
&& V4L2_CTRL_DRIVER_PRIV(x))
int s5p_mfc_enc_ctrls_setup(struct s5p_mfc_ctx *ctx)

6
drivers/media/v4l2-core/v4l2-compat-ioctl32.c
View file

@ -630,7 +630,7 @@ static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __
}
struct v4l2_ext_controls32 {
__u32 ctrl_class;
__u32 which;
__u32 count;
__u32 error_idx;
__u32 reserved[2];
@ -673,7 +673,7 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext
compat_caddr_t p;
if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) ||
get_user(kp->ctrl_class, &up->ctrl_class) ||
get_user(kp->which, &up->which) ||
get_user(kp->count, &up->count) ||
get_user(kp->error_idx, &up->error_idx) ||
copy_from_user(kp->reserved, up->reserved,
@ -723,7 +723,7 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext
compat_caddr_t p;
if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) ||
put_user(kp->ctrl_class, &up->ctrl_class) ||
put_user(kp->which, &up->which) ||
put_user(kp->count, &up->count) ||
put_user(kp->error_idx, &up->error_idx) ||
copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved)))

24
drivers/media/v4l2-core/v4l2-ctrls.c
View file

@ -1762,7 +1762,7 @@ static struct v4l2_ctrl_ref *find_private_ref(
list_for_each_entry(ref, &hdl->ctrl_refs, node) {
/* Search for private user controls that are compatible with
VIDIOC_G/S_CTRL. */
if (V4L2_CTRL_ID2CLASS(ref->ctrl->id) == V4L2_CTRL_CLASS_USER &&
if (V4L2_CTRL_ID2WHICH(ref->ctrl->id) == V4L2_CTRL_CLASS_USER &&
V4L2_CTRL_DRIVER_PRIV(ref->ctrl->id)) {
if (!ref->ctrl->is_int)
continue;
@ -1831,7 +1831,7 @@ static int handler_new_ref(struct v4l2_ctrl_handler *hdl,
struct v4l2_ctrl_ref *ref;
struct v4l2_ctrl_ref *new_ref;
u32 id = ctrl->id;
u32 class_ctrl = V4L2_CTRL_ID2CLASS(id) | 1;
u32 class_ctrl = V4L2_CTRL_ID2WHICH(id) | 1;
int bucket = id % hdl->nr_of_buckets; /* which bucket to use */
/*
@ -2253,9 +2253,9 @@ EXPORT_SYMBOL(v4l2_ctrl_add_handler);
bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl)
{
if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_FM_TX)
if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_TX)
return true;
if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_FM_RX)
if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_RX)
return true;
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
@ -2710,7 +2710,7 @@ static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl,
cs->error_idx = i;
if (cs->ctrl_class && V4L2_CTRL_ID2CLASS(id) != cs->ctrl_class)
if (cs->which && V4L2_CTRL_ID2WHICH(id) != cs->which)
return -EINVAL;
/* Old-style private controls are not allowed for
@ -2787,11 +2787,11 @@ static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl,
/* Handles the corner case where cs->count == 0. It checks whether the
specified control class exists. If that class ID is 0, then it checks
whether there are any controls at all. */
static int class_check(struct v4l2_ctrl_handler *hdl, u32 ctrl_class)
static int class_check(struct v4l2_ctrl_handler *hdl, u32 which)
{
if (ctrl_class == 0)
if (!which)
return list_empty(&hdl->ctrl_refs) ? -EINVAL : 0;
return find_ref_lock(hdl, ctrl_class | 1) ? 0 : -EINVAL;
return find_ref_lock(hdl, which | 1) ? 0 : -EINVAL;
}
@ -2805,13 +2805,13 @@ int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct v4l2_ext_controls *cs
int i, j;
cs->error_idx = cs->count;
cs->ctrl_class = V4L2_CTRL_ID2CLASS(cs->ctrl_class);
cs->which = V4L2_CTRL_ID2WHICH(cs->which);
if (hdl == NULL)
return -EINVAL;
if (cs->count == 0)
return class_check(hdl, cs->ctrl_class);
return class_check(hdl, cs->which);
if (cs->count > ARRAY_SIZE(helper)) {
helpers = kmalloc_array(cs->count, sizeof(helper[0]),
@ -3064,13 +3064,13 @@ static int try_set_ext_ctrls(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
int ret;
cs->error_idx = cs->count;
cs->ctrl_class = V4L2_CTRL_ID2CLASS(cs->ctrl_class);
cs->which = V4L2_CTRL_ID2WHICH(cs->which);
if (hdl == NULL)
return -EINVAL;
if (cs->count == 0)
return class_check(hdl, cs->ctrl_class);
return class_check(hdl, cs->which);
if (cs->count > ARRAY_SIZE(helper)) {
helpers = kmalloc_array(cs->count, sizeof(helper[0]),

14
drivers/media/v4l2-core/v4l2-ioctl.c
View file

@ -565,8 +565,8 @@ static void v4l_print_ext_controls(const void *arg, bool write_only)
const struct v4l2_ext_controls *p = arg;
int i;
pr_cont("class=0x%x, count=%d, error_idx=%d",
p->ctrl_class, p->count, p->error_idx);
pr_cont("which=0x%x, count=%d, error_idx=%d",
p->which, p->count, p->error_idx);
for (i = 0; i < p->count; i++) {
if (!p->controls[i].size)
pr_cont(", id/val=0x%x/0x%x",
@ -902,13 +902,13 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
is it allowed for backwards compatibility.
*/
if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)
return 0;
if (c->ctrl_class == 0)
if (!c->which)
return 1;
/* Check that all controls are from the same control class. */
for (i = 0; i < c->count; i++) {
if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
c->error_idx = i;
return 0;
}
@ -1969,7 +1969,7 @@ static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
if (ops->vidioc_g_ext_ctrls == NULL)
return -ENOTTY;
ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
ctrls.count = 1;
ctrls.controls = &ctrl;
ctrl.id = p->id;
@ -2003,7 +2003,7 @@ static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
if (ops->vidioc_s_ext_ctrls == NULL)
return -ENOTTY;
ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
ctrls.count = 1;
ctrls.controls = &ctrl;
ctrl.id = p->id;

5
include/uapi/linux/videodev2.h
View file

@ -1477,7 +1477,9 @@ struct v4l2_ext_control {
struct v4l2_ext_controls {
union {
#ifndef __KERNEL__
__u32 ctrl_class;
#endif
__u32 which;
};
__u32 count;
@ -1487,7 +1489,10 @@ struct v4l2_ext_controls {
};
#define V4L2_CTRL_ID_MASK (0x0fffffff)
#ifndef __KERNEL__
#define V4L2_CTRL_ID2CLASS(id) ((id) & 0x0fff0000UL)
#endif
#define V4L2_CTRL_ID2WHICH(id) ((id) & 0x0fff0000UL)
#define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000)
#define V4L2_CTRL_MAX_DIMS (4)
#define V4L2_CTRL_WHICH_CUR_VAL 0