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[media] v4l2: rename VIDIOC_DBG_G_CHIP_NAME to _CHIP_INFO 

This ioctl will be extended to return more information than just the name.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2013-04-06 06:16:58 -03:00 committed by Mauro Carvalho Chehab
parent 0f0fe4b9f6
commit 96b03d2a30
9 changed files with 36 additions and 36 deletions
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2
Documentation/DocBook/media/v4l/compat.xml
View File

@ -2507,7 +2507,7 @@ that used it. It was originally scheduled for removal in 2.6.35.
</para>
</listitem>
<listitem>
<para>Added new debugging ioctl &VIDIOC-DBG-G-CHIP-NAME;.
<para>Added new debugging ioctl &VIDIOC-DBG-G-CHIP-INFO;.
</para>
</listitem>
</orderedlist>

4
Documentation/DocBook/media/v4l/v4l2.xml
View File

@ -147,7 +147,7 @@ applications. -->
<revremark>Remove obsolete and unused DV_PRESET ioctls:
VIDIOC_G_DV_PRESET, VIDIOC_S_DV_PRESET, VIDIOC_QUERY_DV_PRESET and
VIDIOC_ENUM_DV_PRESET. Remove the related v4l2_input/output capability
flags V4L2_IN_CAP_PRESETS and V4L2_OUT_CAP_PRESETS. Added VIDIOC_DBG_G_CHIP_NAME.
flags V4L2_IN_CAP_PRESETS and V4L2_OUT_CAP_PRESETS. Added VIDIOC_DBG_G_CHIP_INFO.
</revremark>
</revision>
@ -548,7 +548,7 @@ and discussions on the V4L mailing list.</revremark>
&sub-create-bufs;
&sub-cropcap;
&sub-dbg-g-chip-ident;
&sub-dbg-g-chip-name;
&sub-dbg-g-chip-info;
&sub-dbg-g-register;
&sub-decoder-cmd;
&sub-dqevent;

20
Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-name.xml → Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-info.xml
View File

@ -1,11 +1,11 @@
<refentry id="vidioc-dbg-g-chip-name">
<refentry id="vidioc-dbg-g-chip-info">
<refmeta>
<refentrytitle>ioctl VIDIOC_DBG_G_CHIP_NAME</refentrytitle>
<refentrytitle>ioctl VIDIOC_DBG_G_CHIP_INFO</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
<refname>VIDIOC_DBG_G_CHIP_NAME</refname>
<refname>VIDIOC_DBG_G_CHIP_INFO</refname>
<refpurpose>Identify the chips on a TV card</refpurpose>
</refnamediv>
@ -15,7 +15,7 @@
<funcdef>int <function>ioctl</function></funcdef>
<paramdef>int <parameter>fd</parameter></paramdef>
<paramdef>int <parameter>request</parameter></paramdef>
<paramdef>struct v4l2_dbg_chip_name
<paramdef>struct v4l2_dbg_chip_info
*<parameter>argp</parameter></paramdef>
</funcprototype>
</funcsynopsis>
@ -34,7 +34,7 @@
<varlistentry>
<term><parameter>request</parameter></term>
<listitem>
<para>VIDIOC_DBG_G_CHIP_NAME</para>
<para>VIDIOC_DBG_G_CHIP_INFO</para>
</listitem>
</varlistentry>
<varlistentry>
@ -69,8 +69,8 @@ so it can be fixed.</para>
<para>To query the driver applications must initialize the
<structfield>match.type</structfield> and
<structfield>match.addr</structfield> or <structfield>match.name</structfield>
fields of a &v4l2-dbg-chip-name;
and call <constant>VIDIOC_DBG_G_CHIP_NAME</constant> with a pointer to
fields of a &v4l2-dbg-chip-info;
and call <constant>VIDIOC_DBG_G_CHIP_INFO</constant> with a pointer to
this structure. On success the driver stores information about the
selected chip in the <structfield>name</structfield> and
<structfield>flags</structfield> fields. On failure the structure
@ -81,7 +81,7 @@ remains unchanged.</para>
<structfield>match.addr</structfield> selects the nth bridge 'chip'
on the TV card. You can enumerate all chips by starting at zero and
incrementing <structfield>match.addr</structfield> by one until
<constant>VIDIOC_DBG_G_CHIP_NAME</constant> fails with an &EINVAL;.
<constant>VIDIOC_DBG_G_CHIP_INFO</constant> fails with an &EINVAL;.
The number zero always selects the bridge chip itself, &eg; the chip
connected to the PCI or USB bus. Non-zero numbers identify specific
parts of the bridge chip such as an AC97 register block.</para>
@ -138,8 +138,8 @@ to the <structfield>type</structfield> field.</entry>
</tgroup>
</table>
<table pgwide="1" frame="none" id="v4l2-dbg-chip-name">
<title>struct <structname>v4l2_dbg_chip_name</structname></title>
<table pgwide="1" frame="none" id="v4l2-dbg-chip-info">
<title>struct <structname>v4l2_dbg_chip_info</structname></title>
<tgroup cols="3">
&cs-str;
<tbody valign="top">

10
Documentation/DocBook/media/v4l/vidioc-dbg-g-register.xml
View File

@ -99,7 +99,7 @@ unchanged.</para>
<structfield>match.addr</structfield> selects the nth non-sub-device chip
on the TV card. The number zero always selects the host chip, &eg; the
chip connected to the PCI or USB bus. You can find out which chips are
present with the &VIDIOC-DBG-G-CHIP-NAME; ioctl.</para>
present with the &VIDIOC-DBG-G-CHIP-INFO; ioctl.</para>
<para>When <structfield>match.type</structfield> is
<constant>V4L2_CHIP_MATCH_I2C_DRIVER</constant>,
@ -109,7 +109,7 @@ For instance
supported by the saa7127 driver, regardless of its &i2c; bus address.
When multiple chips supported by the same driver are present, the
effect of these ioctls is undefined. Again with the
&VIDIOC-DBG-G-CHIP-NAME; ioctl you can find out which &i2c; chips are
&VIDIOC-DBG-G-CHIP-INFO; ioctl you can find out which &i2c; chips are
present.</para>
<para>When <structfield>match.type</structfield> is
@ -131,14 +131,14 @@ on the TV card.</para>
<para>Due to a flaw in the Linux &i2c; bus driver these ioctls may
return successfully without actually reading or writing a register. To
catch the most likely failure we recommend a &VIDIOC-DBG-G-CHIP-NAME;
catch the most likely failure we recommend a &VIDIOC-DBG-G-CHIP-INFO;
call confirming the presence of the selected &i2c; chip.</para>
</note>
<para>These ioctls are optional, not all drivers may support them.
However when a driver supports these ioctls it must also support
&VIDIOC-DBG-G-CHIP-NAME;. Conversely it may support
<constant>VIDIOC_DBG_G_CHIP_NAME</constant> but not these ioctls.</para>
&VIDIOC-DBG-G-CHIP-INFO;. Conversely it may support
<constant>VIDIOC_DBG_G_CHIP_INFO</constant> but not these ioctls.</para>
<para><constant>VIDIOC_DBG_G_REGISTER</constant> and
<constant>VIDIOC_DBG_S_REGISTER</constant> were introduced in Linux

8
drivers/media/usb/em28xx/em28xx-video.c
View File

@ -1332,8 +1332,8 @@ static int vidioc_g_chip_ident(struct file *file, void *priv,
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int vidioc_g_chip_name(struct file *file, void *priv,
struct v4l2_dbg_chip_name *chip)
static int vidioc_g_chip_info(struct file *file, void *priv,
struct v4l2_dbg_chip_info *chip)
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
@ -1797,7 +1797,7 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_g_chip_ident = vidioc_g_chip_ident,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_chip_name = vidioc_g_chip_name,
.vidioc_g_chip_info = vidioc_g_chip_info,
.vidioc_g_register = vidioc_g_register,
.vidioc_s_register = vidioc_s_register,
#endif
@ -1827,7 +1827,7 @@ static const struct v4l2_ioctl_ops radio_ioctl_ops = {
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_g_chip_ident = vidioc_g_chip_ident,
.vidioc_g_chip_name = vidioc_g_chip_name,
.vidioc_g_chip_info = vidioc_g_chip_info,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = vidioc_g_register,
.vidioc_s_register = vidioc_s_register,

2
drivers/media/v4l2-core/v4l2-dev.c
View File

@ -592,7 +592,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
SET_VALID_IOCTL(ops, VIDIOC_S_FREQUENCY, vidioc_s_frequency);
SET_VALID_IOCTL(ops, VIDIOC_LOG_STATUS, vidioc_log_status);
#ifdef CONFIG_VIDEO_ADV_DEBUG
set_bit(_IOC_NR(VIDIOC_DBG_G_CHIP_NAME), valid_ioctls);
set_bit(_IOC_NR(VIDIOC_DBG_G_CHIP_INFO), valid_ioctls);
set_bit(_IOC_NR(VIDIOC_DBG_G_REGISTER), valid_ioctls);
set_bit(_IOC_NR(VIDIOC_DBG_S_REGISTER), valid_ioctls);
#endif

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

@ -638,9 +638,9 @@ static void v4l_print_dbg_chip_ident(const void *arg, bool write_only)
p->ident, p->revision);
}
static void v4l_print_dbg_chip_name(const void *arg, bool write_only)
static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
{
const struct v4l2_dbg_chip_name *p = arg;
const struct v4l2_dbg_chip_info *p = arg;
pr_cont("type=%u, ", p->match.type);
if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
@ -1854,12 +1854,12 @@ static int v4l_dbg_g_chip_ident(const struct v4l2_ioctl_ops *ops,
return ops->vidioc_g_chip_ident(file, fh, p);
}
static int v4l_dbg_g_chip_name(const struct v4l2_ioctl_ops *ops,
static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
#ifdef CONFIG_VIDEO_ADV_DEBUG
struct video_device *vfd = video_devdata(file);
struct v4l2_dbg_chip_name *p = arg;
struct v4l2_dbg_chip_info *p = arg;
struct v4l2_subdev *sd;
int idx = 0;
@ -1875,8 +1875,8 @@ static int v4l_dbg_g_chip_name(const struct v4l2_ioctl_ops *ops,
strlcpy(p->name, vfd->parent->driver->name, sizeof(p->name));
else
strlcpy(p->name, "bridge", sizeof(p->name));
if (ops->vidioc_g_chip_name)
return ops->vidioc_g_chip_name(file, fh, arg);
if (ops->vidioc_g_chip_info)
return ops->vidioc_g_chip_info(file, fh, arg);
if (p->match.addr)
return -EINVAL;
return 0;
@ -2116,7 +2116,7 @@ static struct v4l2_ioctl_info v4l2_ioctls[] = {
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),
IOCTL_INFO_FNC(VIDIOC_DBG_G_CHIP_NAME, v4l_dbg_g_chip_name, v4l_print_dbg_chip_name, INFO_FL_CLEAR(v4l2_dbg_chip_name, match)),
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)),
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)

4
include/media/v4l2-ioctl.h
View File

@ -244,8 +244,8 @@ struct v4l2_ioctl_ops {
int (*vidioc_s_register) (struct file *file, void *fh,
const struct v4l2_dbg_register *reg);
int (*vidioc_g_chip_name) (struct file *file, void *fh,
struct v4l2_dbg_chip_name *chip);
int (*vidioc_g_chip_info) (struct file *file, void *fh,
struct v4l2_dbg_chip_info *chip);
#endif
int (*vidioc_g_chip_ident) (struct file *file, void *fh,
struct v4l2_dbg_chip_ident *chip);

8
include/uapi/linux/videodev2.h
View File

@ -1839,8 +1839,8 @@ struct v4l2_dbg_chip_ident {
#define V4L2_CHIP_FL_READABLE (1 << 0)
#define V4L2_CHIP_FL_WRITABLE (1 << 1)
/* VIDIOC_DBG_G_CHIP_NAME */
struct v4l2_dbg_chip_name {
/* VIDIOC_DBG_G_CHIP_INFO */
struct v4l2_dbg_chip_info {
struct v4l2_dbg_match match;
char name[32];
__u32 flags;
@ -1938,7 +1938,7 @@ struct v4l2_create_buffers {
/* Experimental, meant for debugging, testing and internal use.
Never use this ioctl in applications!
Note: this ioctl is deprecated in favor of VIDIOC_DBG_G_CHIP_NAME and
Note: this ioctl is deprecated in favor of VIDIOC_DBG_G_CHIP_INFO and
will go away in the future. */
#define VIDIOC_DBG_G_CHIP_IDENT _IOWR('V', 81, struct v4l2_dbg_chip_ident)
@ -1976,7 +1976,7 @@ struct v4l2_create_buffers {
/* Experimental, meant for debugging, testing and internal use.
Never use these in applications! */
#define VIDIOC_DBG_G_CHIP_NAME _IOWR('V', 102, struct v4l2_dbg_chip_name)
#define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
/* Reminder: when adding new ioctls please add support for them to
drivers/media/video/v4l2-compat-ioctl32.c as well! */