linux/drivers/media/v4l2-core/v4l2-subdev.c

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/*
* V4L2 sub-device
*
* Copyright (C) 2010 Nokia Corporation
*
* Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
* Sakari Ailus <sakari.ailus@iki.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/ioctl.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/videodev2.h>
#include <linux/export.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-event.h>
static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd)
{
#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
if (sd->entity.num_pads) {
fh->pad = v4l2_subdev_alloc_pad_config(sd);
if (fh->pad == NULL)
return -ENOMEM;
}
#endif
return 0;
}
static void subdev_fh_free(struct v4l2_subdev_fh *fh)
{
#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
v4l2_subdev_free_pad_config(fh->pad);
fh->pad = NULL;
#endif
}
static int subdev_open(struct file *file)
{
struct video_device *vdev = video_devdata(file);
struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
struct v4l2_subdev_fh *subdev_fh;
#if defined(CONFIG_MEDIA_CONTROLLER)
struct media_entity *entity = NULL;
#endif
int ret;
subdev_fh = kzalloc(sizeof(*subdev_fh), GFP_KERNEL);
if (subdev_fh == NULL)
return -ENOMEM;
ret = subdev_fh_init(subdev_fh, sd);
if (ret) {
kfree(subdev_fh);
return ret;
}
v4l2_fh_init(&subdev_fh->vfh, vdev);
v4l2_fh_add(&subdev_fh->vfh);
file->private_data = &subdev_fh->vfh;
#if defined(CONFIG_MEDIA_CONTROLLER)
if (sd->v4l2_dev->mdev) {
entity = media_entity_get(&sd->entity);
if (!entity) {
ret = -EBUSY;
goto err;
}
}
#endif
if (sd->internal_ops && sd->internal_ops->open) {
ret = sd->internal_ops->open(sd, subdev_fh);
if (ret < 0)
goto err;
}
return 0;
err:
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_put(entity);
#endif
v4l2_fh_del(&subdev_fh->vfh);
v4l2_fh_exit(&subdev_fh->vfh);
subdev_fh_free(subdev_fh);
kfree(subdev_fh);
return ret;
}
static int subdev_close(struct file *file)
{
struct video_device *vdev = video_devdata(file);
struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
struct v4l2_fh *vfh = file->private_data;
struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh);
if (sd->internal_ops && sd->internal_ops->close)
sd->internal_ops->close(sd, subdev_fh);
#if defined(CONFIG_MEDIA_CONTROLLER)
if (sd->v4l2_dev->mdev)
media_entity_put(&sd->entity);
#endif
v4l2_fh_del(vfh);
v4l2_fh_exit(vfh);
subdev_fh_free(subdev_fh);
kfree(subdev_fh);
file->private_data = NULL;
return 0;
}
[media] v4l2-subdev: Fix compilation when !VIDEO_V4L2_SUBDEV_API As reported by Kbuildtest: drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_format': drivers/media/v4l2-core/v4l2-subdev.c:136:23: error: 'struct v4l2_subdev' has no member named 'entity' if (format->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_crop': drivers/media/v4l2-core/v4l2-subdev.c:148:21: error: 'struct v4l2_subdev' has no member named 'entity' if (crop->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_selection': drivers/media/v4l2-core/v4l2-subdev.c:161:20: error: 'struct v4l2_subdev' has no member named 'entity' if (sel->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_edid': drivers/media/v4l2-core/v4l2-subdev.c:169:21: error: 'struct v4l2_subdev' has no member named 'entity' if (edid->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'subdev_do_ioctl': >> drivers/media/v4l2-core/v4l2-subdev.c:186:6: warning: unused variable 'rval' [-Wunused-variable] int rval; ^ drivers/media/v4l2-core/v4l2-subdev.c: At top level: drivers/media/v4l2-core/v4l2-subdev.c:129:12: warning: 'check_format' defined but not used [-Wunused-function] static int check_format(struct v4l2_subdev *sd, ^ drivers/media/v4l2-core/v4l2-subdev.c:142:12: warning: 'check_crop' defined but not used [-Wunused-function] static int check_crop(struct v4l2_subdev *sd, struct v4l2_subdev_crop *crop) ^ drivers/media/v4l2-core/v4l2-subdev.c:154:12: warning: 'check_selection' defined but not used [-Wunused-function] static int check_selection(struct v4l2_subdev *sd, ^ drivers/media/v4l2-core/v4l2-subdev.c:167:12: warning: 'check_edid' defined but not used [-Wunused-function] static int check_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) The above warnins happen because those functions are used only when the V4L2 subdev API is enabled. Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-07-22 12:40:00 +08:00
#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
static int check_format(struct v4l2_subdev *sd,
struct v4l2_subdev_format *format)
{
if (format->which != V4L2_SUBDEV_FORMAT_TRY &&
format->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
if (format->pad >= sd->entity.num_pads)
return -EINVAL;
return 0;
}
static int check_crop(struct v4l2_subdev *sd, struct v4l2_subdev_crop *crop)
{
if (crop->which != V4L2_SUBDEV_FORMAT_TRY &&
crop->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
if (crop->pad >= sd->entity.num_pads)
return -EINVAL;
return 0;
}
static int check_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_selection *sel)
{
if (sel->which != V4L2_SUBDEV_FORMAT_TRY &&
sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
if (sel->pad >= sd->entity.num_pads)
return -EINVAL;
return 0;
}
static int check_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid)
{
if (edid->pad >= sd->entity.num_pads)
return -EINVAL;
if (edid->blocks && edid->edid == NULL)
return -EINVAL;
return 0;
}
[media] v4l2-subdev: Fix compilation when !VIDEO_V4L2_SUBDEV_API As reported by Kbuildtest: drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_format': drivers/media/v4l2-core/v4l2-subdev.c:136:23: error: 'struct v4l2_subdev' has no member named 'entity' if (format->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_crop': drivers/media/v4l2-core/v4l2-subdev.c:148:21: error: 'struct v4l2_subdev' has no member named 'entity' if (crop->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_selection': drivers/media/v4l2-core/v4l2-subdev.c:161:20: error: 'struct v4l2_subdev' has no member named 'entity' if (sel->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_edid': drivers/media/v4l2-core/v4l2-subdev.c:169:21: error: 'struct v4l2_subdev' has no member named 'entity' if (edid->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'subdev_do_ioctl': >> drivers/media/v4l2-core/v4l2-subdev.c:186:6: warning: unused variable 'rval' [-Wunused-variable] int rval; ^ drivers/media/v4l2-core/v4l2-subdev.c: At top level: drivers/media/v4l2-core/v4l2-subdev.c:129:12: warning: 'check_format' defined but not used [-Wunused-function] static int check_format(struct v4l2_subdev *sd, ^ drivers/media/v4l2-core/v4l2-subdev.c:142:12: warning: 'check_crop' defined but not used [-Wunused-function] static int check_crop(struct v4l2_subdev *sd, struct v4l2_subdev_crop *crop) ^ drivers/media/v4l2-core/v4l2-subdev.c:154:12: warning: 'check_selection' defined but not used [-Wunused-function] static int check_selection(struct v4l2_subdev *sd, ^ drivers/media/v4l2-core/v4l2-subdev.c:167:12: warning: 'check_edid' defined but not used [-Wunused-function] static int check_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) The above warnins happen because those functions are used only when the V4L2 subdev API is enabled. Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-07-22 12:40:00 +08:00
#endif
static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
{
struct video_device *vdev = video_devdata(file);
struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
struct v4l2_fh *vfh = file->private_data;
#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh);
int rval;
[media] v4l2-subdev: Fix compilation when !VIDEO_V4L2_SUBDEV_API As reported by Kbuildtest: drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_format': drivers/media/v4l2-core/v4l2-subdev.c:136:23: error: 'struct v4l2_subdev' has no member named 'entity' if (format->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_crop': drivers/media/v4l2-core/v4l2-subdev.c:148:21: error: 'struct v4l2_subdev' has no member named 'entity' if (crop->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_selection': drivers/media/v4l2-core/v4l2-subdev.c:161:20: error: 'struct v4l2_subdev' has no member named 'entity' if (sel->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_edid': drivers/media/v4l2-core/v4l2-subdev.c:169:21: error: 'struct v4l2_subdev' has no member named 'entity' if (edid->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'subdev_do_ioctl': >> drivers/media/v4l2-core/v4l2-subdev.c:186:6: warning: unused variable 'rval' [-Wunused-variable] int rval; ^ drivers/media/v4l2-core/v4l2-subdev.c: At top level: drivers/media/v4l2-core/v4l2-subdev.c:129:12: warning: 'check_format' defined but not used [-Wunused-function] static int check_format(struct v4l2_subdev *sd, ^ drivers/media/v4l2-core/v4l2-subdev.c:142:12: warning: 'check_crop' defined but not used [-Wunused-function] static int check_crop(struct v4l2_subdev *sd, struct v4l2_subdev_crop *crop) ^ drivers/media/v4l2-core/v4l2-subdev.c:154:12: warning: 'check_selection' defined but not used [-Wunused-function] static int check_selection(struct v4l2_subdev *sd, ^ drivers/media/v4l2-core/v4l2-subdev.c:167:12: warning: 'check_edid' defined but not used [-Wunused-function] static int check_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) The above warnins happen because those functions are used only when the V4L2 subdev API is enabled. Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-07-22 12:40:00 +08:00
#endif
switch (cmd) {
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);
case VIDIOC_G_CTRL:
return v4l2_g_ctrl(vfh->ctrl_handler, arg);
case VIDIOC_S_CTRL:
return v4l2_s_ctrl(vfh, vfh->ctrl_handler, arg);
case VIDIOC_G_EXT_CTRLS:
return v4l2_g_ext_ctrls(vfh->ctrl_handler, arg);
case VIDIOC_S_EXT_CTRLS:
return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler, arg);
case VIDIOC_TRY_EXT_CTRLS:
return v4l2_try_ext_ctrls(vfh->ctrl_handler, arg);
case VIDIOC_DQEVENT:
if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS))
return -ENOIOCTLCMD;
return v4l2_event_dequeue(vfh, arg, file->f_flags & O_NONBLOCK);
case VIDIOC_SUBSCRIBE_EVENT:
return v4l2_subdev_call(sd, core, subscribe_event, vfh, arg);
case VIDIOC_UNSUBSCRIBE_EVENT:
return v4l2_subdev_call(sd, core, unsubscribe_event, vfh, arg);
#ifdef CONFIG_VIDEO_ADV_DEBUG
case VIDIOC_DBG_G_REGISTER:
{
struct v4l2_dbg_register *p = arg;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
return v4l2_subdev_call(sd, core, g_register, p);
}
case VIDIOC_DBG_S_REGISTER:
{
struct v4l2_dbg_register *p = arg;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
return v4l2_subdev_call(sd, core, s_register, p);
}
#endif
case VIDIOC_LOG_STATUS: {
int ret;
pr_info("%s: ================= START STATUS =================\n",
sd->name);
ret = v4l2_subdev_call(sd, core, log_status);
pr_info("%s: ================== END STATUS ==================\n",
sd->name);
return ret;
}
#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
case VIDIOC_SUBDEV_G_FMT: {
struct v4l2_subdev_format *format = arg;
rval = check_format(sd, format);
if (rval)
return rval;
[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_config If a subdevice pad op is called from a bridge driver, then there is no v4l2_subdev_fh struct that can be passed to the subdevice. This made it hard to use such subdevs from a bridge driver. This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config pointer in the pad ops. This allows bridge drivers to use the various try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it along to the pad op. The v4l2_subdev_get_try_* macros had to be changed because of this, so I also took the opportunity to use the full name of the v4l2_subdev_get_try_* functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do 'git grep v4l2_subdev_get_try_format' you will actually find the header where it is defined. One remark regarding the drivers/staging/media/davinci_vpfe patches: the *_init_formats() functions assumed that fh could be NULL. However, that's not true for this driver, it's always set. This is almost certainly a copy and paste from the omap3isp driver. I've updated the code to reflect the fact that fh is never NULL. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-04 17:47:54 +08:00
return v4l2_subdev_call(sd, pad, get_fmt, subdev_fh->pad, format);
}
case VIDIOC_SUBDEV_S_FMT: {
struct v4l2_subdev_format *format = arg;
rval = check_format(sd, format);
if (rval)
return rval;
[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_config If a subdevice pad op is called from a bridge driver, then there is no v4l2_subdev_fh struct that can be passed to the subdevice. This made it hard to use such subdevs from a bridge driver. This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config pointer in the pad ops. This allows bridge drivers to use the various try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it along to the pad op. The v4l2_subdev_get_try_* macros had to be changed because of this, so I also took the opportunity to use the full name of the v4l2_subdev_get_try_* functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do 'git grep v4l2_subdev_get_try_format' you will actually find the header where it is defined. One remark regarding the drivers/staging/media/davinci_vpfe patches: the *_init_formats() functions assumed that fh could be NULL. However, that's not true for this driver, it's always set. This is almost certainly a copy and paste from the omap3isp driver. I've updated the code to reflect the fact that fh is never NULL. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-04 17:47:54 +08:00
return v4l2_subdev_call(sd, pad, set_fmt, subdev_fh->pad, format);
}
case VIDIOC_SUBDEV_G_CROP: {
struct v4l2_subdev_crop *crop = arg;
struct v4l2_subdev_selection sel;
rval = check_crop(sd, crop);
if (rval)
return rval;
memset(&sel, 0, sizeof(sel));
sel.which = crop->which;
sel.pad = crop->pad;
sel.target = V4L2_SEL_TGT_CROP;
rval = v4l2_subdev_call(
[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_config If a subdevice pad op is called from a bridge driver, then there is no v4l2_subdev_fh struct that can be passed to the subdevice. This made it hard to use such subdevs from a bridge driver. This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config pointer in the pad ops. This allows bridge drivers to use the various try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it along to the pad op. The v4l2_subdev_get_try_* macros had to be changed because of this, so I also took the opportunity to use the full name of the v4l2_subdev_get_try_* functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do 'git grep v4l2_subdev_get_try_format' you will actually find the header where it is defined. One remark regarding the drivers/staging/media/davinci_vpfe patches: the *_init_formats() functions assumed that fh could be NULL. However, that's not true for this driver, it's always set. This is almost certainly a copy and paste from the omap3isp driver. I've updated the code to reflect the fact that fh is never NULL. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-04 17:47:54 +08:00
sd, pad, get_selection, subdev_fh->pad, &sel);
crop->rect = sel.r;
return rval;
}
case VIDIOC_SUBDEV_S_CROP: {
struct v4l2_subdev_crop *crop = arg;
struct v4l2_subdev_selection sel;
rval = check_crop(sd, crop);
if (rval)
return rval;
memset(&sel, 0, sizeof(sel));
sel.which = crop->which;
sel.pad = crop->pad;
sel.target = V4L2_SEL_TGT_CROP;
sel.r = crop->rect;
rval = v4l2_subdev_call(
[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_config If a subdevice pad op is called from a bridge driver, then there is no v4l2_subdev_fh struct that can be passed to the subdevice. This made it hard to use such subdevs from a bridge driver. This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config pointer in the pad ops. This allows bridge drivers to use the various try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it along to the pad op. The v4l2_subdev_get_try_* macros had to be changed because of this, so I also took the opportunity to use the full name of the v4l2_subdev_get_try_* functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do 'git grep v4l2_subdev_get_try_format' you will actually find the header where it is defined. One remark regarding the drivers/staging/media/davinci_vpfe patches: the *_init_formats() functions assumed that fh could be NULL. However, that's not true for this driver, it's always set. This is almost certainly a copy and paste from the omap3isp driver. I've updated the code to reflect the fact that fh is never NULL. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-04 17:47:54 +08:00
sd, pad, set_selection, subdev_fh->pad, &sel);
crop->rect = sel.r;
return rval;
}
case VIDIOC_SUBDEV_ENUM_MBUS_CODE: {
struct v4l2_subdev_mbus_code_enum *code = arg;
if (code->which != V4L2_SUBDEV_FORMAT_TRY &&
code->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
if (code->pad >= sd->entity.num_pads)
return -EINVAL;
[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_config If a subdevice pad op is called from a bridge driver, then there is no v4l2_subdev_fh struct that can be passed to the subdevice. This made it hard to use such subdevs from a bridge driver. This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config pointer in the pad ops. This allows bridge drivers to use the various try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it along to the pad op. The v4l2_subdev_get_try_* macros had to be changed because of this, so I also took the opportunity to use the full name of the v4l2_subdev_get_try_* functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do 'git grep v4l2_subdev_get_try_format' you will actually find the header where it is defined. One remark regarding the drivers/staging/media/davinci_vpfe patches: the *_init_formats() functions assumed that fh could be NULL. However, that's not true for this driver, it's always set. This is almost certainly a copy and paste from the omap3isp driver. I've updated the code to reflect the fact that fh is never NULL. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-04 17:47:54 +08:00
return v4l2_subdev_call(sd, pad, enum_mbus_code, subdev_fh->pad,
code);
}
case VIDIOC_SUBDEV_ENUM_FRAME_SIZE: {
struct v4l2_subdev_frame_size_enum *fse = arg;
if (fse->which != V4L2_SUBDEV_FORMAT_TRY &&
fse->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
if (fse->pad >= sd->entity.num_pads)
return -EINVAL;
[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_config If a subdevice pad op is called from a bridge driver, then there is no v4l2_subdev_fh struct that can be passed to the subdevice. This made it hard to use such subdevs from a bridge driver. This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config pointer in the pad ops. This allows bridge drivers to use the various try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it along to the pad op. The v4l2_subdev_get_try_* macros had to be changed because of this, so I also took the opportunity to use the full name of the v4l2_subdev_get_try_* functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do 'git grep v4l2_subdev_get_try_format' you will actually find the header where it is defined. One remark regarding the drivers/staging/media/davinci_vpfe patches: the *_init_formats() functions assumed that fh could be NULL. However, that's not true for this driver, it's always set. This is almost certainly a copy and paste from the omap3isp driver. I've updated the code to reflect the fact that fh is never NULL. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-04 17:47:54 +08:00
return v4l2_subdev_call(sd, pad, enum_frame_size, subdev_fh->pad,
fse);
}
case VIDIOC_SUBDEV_G_FRAME_INTERVAL: {
struct v4l2_subdev_frame_interval *fi = arg;
if (fi->pad >= sd->entity.num_pads)
return -EINVAL;
return v4l2_subdev_call(sd, video, g_frame_interval, arg);
}
case VIDIOC_SUBDEV_S_FRAME_INTERVAL: {
struct v4l2_subdev_frame_interval *fi = arg;
if (fi->pad >= sd->entity.num_pads)
return -EINVAL;
return v4l2_subdev_call(sd, video, s_frame_interval, arg);
}
case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: {
struct v4l2_subdev_frame_interval_enum *fie = arg;
if (fie->which != V4L2_SUBDEV_FORMAT_TRY &&
fie->which != V4L2_SUBDEV_FORMAT_ACTIVE)
return -EINVAL;
if (fie->pad >= sd->entity.num_pads)
return -EINVAL;
[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_config If a subdevice pad op is called from a bridge driver, then there is no v4l2_subdev_fh struct that can be passed to the subdevice. This made it hard to use such subdevs from a bridge driver. This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config pointer in the pad ops. This allows bridge drivers to use the various try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it along to the pad op. The v4l2_subdev_get_try_* macros had to be changed because of this, so I also took the opportunity to use the full name of the v4l2_subdev_get_try_* functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do 'git grep v4l2_subdev_get_try_format' you will actually find the header where it is defined. One remark regarding the drivers/staging/media/davinci_vpfe patches: the *_init_formats() functions assumed that fh could be NULL. However, that's not true for this driver, it's always set. This is almost certainly a copy and paste from the omap3isp driver. I've updated the code to reflect the fact that fh is never NULL. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-04 17:47:54 +08:00
return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh->pad,
fie);
}
case VIDIOC_SUBDEV_G_SELECTION: {
struct v4l2_subdev_selection *sel = arg;
rval = check_selection(sd, sel);
if (rval)
return rval;
return v4l2_subdev_call(
[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_config If a subdevice pad op is called from a bridge driver, then there is no v4l2_subdev_fh struct that can be passed to the subdevice. This made it hard to use such subdevs from a bridge driver. This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config pointer in the pad ops. This allows bridge drivers to use the various try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it along to the pad op. The v4l2_subdev_get_try_* macros had to be changed because of this, so I also took the opportunity to use the full name of the v4l2_subdev_get_try_* functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do 'git grep v4l2_subdev_get_try_format' you will actually find the header where it is defined. One remark regarding the drivers/staging/media/davinci_vpfe patches: the *_init_formats() functions assumed that fh could be NULL. However, that's not true for this driver, it's always set. This is almost certainly a copy and paste from the omap3isp driver. I've updated the code to reflect the fact that fh is never NULL. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-04 17:47:54 +08:00
sd, pad, get_selection, subdev_fh->pad, sel);
}
case VIDIOC_SUBDEV_S_SELECTION: {
struct v4l2_subdev_selection *sel = arg;
rval = check_selection(sd, sel);
if (rval)
return rval;
return v4l2_subdev_call(
[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_config If a subdevice pad op is called from a bridge driver, then there is no v4l2_subdev_fh struct that can be passed to the subdevice. This made it hard to use such subdevs from a bridge driver. This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config pointer in the pad ops. This allows bridge drivers to use the various try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it along to the pad op. The v4l2_subdev_get_try_* macros had to be changed because of this, so I also took the opportunity to use the full name of the v4l2_subdev_get_try_* functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do 'git grep v4l2_subdev_get_try_format' you will actually find the header where it is defined. One remark regarding the drivers/staging/media/davinci_vpfe patches: the *_init_formats() functions assumed that fh could be NULL. However, that's not true for this driver, it's always set. This is almost certainly a copy and paste from the omap3isp driver. I've updated the code to reflect the fact that fh is never NULL. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-04 17:47:54 +08:00
sd, pad, set_selection, subdev_fh->pad, sel);
}
case VIDIOC_G_EDID: {
struct v4l2_subdev_edid *edid = arg;
rval = check_edid(sd, edid);
if (rval)
return rval;
return v4l2_subdev_call(sd, pad, get_edid, edid);
}
case VIDIOC_S_EDID: {
struct v4l2_subdev_edid *edid = arg;
rval = check_edid(sd, edid);
if (rval)
return rval;
return v4l2_subdev_call(sd, pad, set_edid, edid);
}
case VIDIOC_SUBDEV_DV_TIMINGS_CAP: {
struct v4l2_dv_timings_cap *cap = arg;
if (cap->pad >= sd->entity.num_pads)
return -EINVAL;
return v4l2_subdev_call(sd, pad, dv_timings_cap, cap);
}
case VIDIOC_SUBDEV_ENUM_DV_TIMINGS: {
struct v4l2_enum_dv_timings *dvt = arg;
if (dvt->pad >= sd->entity.num_pads)
return -EINVAL;
return v4l2_subdev_call(sd, pad, enum_dv_timings, dvt);
}
case VIDIOC_SUBDEV_QUERY_DV_TIMINGS:
return v4l2_subdev_call(sd, video, query_dv_timings, arg);
case VIDIOC_SUBDEV_G_DV_TIMINGS:
return v4l2_subdev_call(sd, video, g_dv_timings, arg);
case VIDIOC_SUBDEV_S_DV_TIMINGS:
return v4l2_subdev_call(sd, video, s_dv_timings, arg);
#endif
default:
return v4l2_subdev_call(sd, core, ioctl, cmd, arg);
}
return 0;
}
static long subdev_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
return video_usercopy(file, cmd, arg, subdev_do_ioctl);
}
#ifdef CONFIG_COMPAT
static long subdev_compat_ioctl32(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct video_device *vdev = video_devdata(file);
struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
return v4l2_subdev_call(sd, core, compat_ioctl32, cmd, arg);
}
#endif
static unsigned int subdev_poll(struct file *file, poll_table *wait)
{
struct video_device *vdev = video_devdata(file);
struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
struct v4l2_fh *fh = file->private_data;
if (!(sd->flags & V4L2_SUBDEV_FL_HAS_EVENTS))
return POLLERR;
poll_wait(file, &fh->wait, wait);
if (v4l2_event_pending(fh))
return POLLPRI;
return 0;
}
const struct v4l2_file_operations v4l2_subdev_fops = {
.owner = THIS_MODULE,
.open = subdev_open,
.unlocked_ioctl = subdev_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl32 = subdev_compat_ioctl32,
#endif
.release = subdev_close,
.poll = subdev_poll,
};
#ifdef CONFIG_MEDIA_CONTROLLER
int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd,
struct media_link *link,
struct v4l2_subdev_format *source_fmt,
struct v4l2_subdev_format *sink_fmt)
{
/* The width, height and code must match. */
if (source_fmt->format.width != sink_fmt->format.width
|| source_fmt->format.height != sink_fmt->format.height
|| source_fmt->format.code != sink_fmt->format.code)
return -EPIPE;
/* The field order must match, or the sink field order must be NONE
* to support interlaced hardware connected to bridges that support
* progressive formats only.
*/
if (source_fmt->format.field != sink_fmt->format.field &&
sink_fmt->format.field != V4L2_FIELD_NONE)
return -EPIPE;
return 0;
}
EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate_default);
static int
v4l2_subdev_link_validate_get_format(struct media_pad *pad,
struct v4l2_subdev_format *fmt)
{
if (is_media_entity_v4l2_subdev(pad->entity)) {
struct v4l2_subdev *sd =
media_entity_to_v4l2_subdev(pad->entity);
fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
fmt->pad = pad->index;
return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
}
[media] uapi/media.h: Rename entities types to functions Rename the userspace types from MEDIA_ENT_T_ to MEDIA_ENT_F_ and add the backward compatibility bits. The changes at the .c files was generated by the following coccinelle script: @@ @@ -MEDIA_ENT_T_UNKNOWN +MEDIA_ENT_F_UNKNOWN @@ @@ -MEDIA_ENT_T_DVB_BASE +MEDIA_ENT_F_DVB_BASE @@ @@ -MEDIA_ENT_T_V4L2_BASE +MEDIA_ENT_F_V4L2_BASE @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_BASE +MEDIA_ENT_F_V4L2_SUBDEV_BASE @@ @@ -MEDIA_ENT_T_CONNECTOR_BASE +MEDIA_ENT_F_CONNECTOR_BASE @@ @@ -MEDIA_ENT_T_V4L2_VIDEO +MEDIA_ENT_F_IO_V4L @@ @@ -MEDIA_ENT_T_V4L2_VBI +MEDIA_ENT_F_IO_VBI @@ @@ -MEDIA_ENT_T_V4L2_SWRADIO +MEDIA_ENT_F_IO_SWRADIO @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN +MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN @@ @@ -MEDIA_ENT_T_CONN_RF +MEDIA_ENT_F_CONN_RF @@ @@ -MEDIA_ENT_T_CONN_SVIDEO +MEDIA_ENT_F_CONN_SVIDEO @@ @@ -MEDIA_ENT_T_CONN_COMPOSITE +MEDIA_ENT_F_CONN_COMPOSITE @@ @@ -MEDIA_ENT_T_CONN_TEST +MEDIA_ENT_F_CONN_TEST @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_SENSOR +MEDIA_ENT_F_CAM_SENSOR @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_FLASH +MEDIA_ENT_F_FLASH @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_LENS +MEDIA_ENT_F_LENS @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_DECODER +MEDIA_ENT_F_ATV_DECODER @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_TUNER +MEDIA_ENT_F_TUNER @@ @@ -MEDIA_ENT_T_DVB_DEMOD +MEDIA_ENT_F_DTV_DEMOD @@ @@ -MEDIA_ENT_T_DVB_DEMUX +MEDIA_ENT_F_TS_DEMUX @@ @@ -MEDIA_ENT_T_DVB_TSOUT +MEDIA_ENT_F_IO_DTV @@ @@ -MEDIA_ENT_T_DVB_CA +MEDIA_ENT_F_DTV_CA @@ @@ -MEDIA_ENT_T_DVB_NET_DECAP +MEDIA_ENT_F_DTV_NET_DECAP Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-12-11 03:25:41 +08:00
WARN(pad->entity->function != MEDIA_ENT_F_IO_V4L,
"Driver bug! Wrong media entity type 0x%08x, entity %s\n",
pad->entity->function, pad->entity->name);
return -EINVAL;
}
int v4l2_subdev_link_validate(struct media_link *link)
{
struct v4l2_subdev *sink;
struct v4l2_subdev_format sink_fmt, source_fmt;
int rval;
rval = v4l2_subdev_link_validate_get_format(
link->source, &source_fmt);
if (rval < 0)
return 0;
rval = v4l2_subdev_link_validate_get_format(
link->sink, &sink_fmt);
if (rval < 0)
return 0;
sink = media_entity_to_v4l2_subdev(link->sink->entity);
rval = v4l2_subdev_call(sink, pad, link_validate, link,
&source_fmt, &sink_fmt);
if (rval != -ENOIOCTLCMD)
return rval;
return v4l2_subdev_link_validate_default(
sink, link, &source_fmt, &sink_fmt);
}
EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate);
struct v4l2_subdev_pad_config *
v4l2_subdev_alloc_pad_config(struct v4l2_subdev *sd)
{
struct v4l2_subdev_pad_config *cfg;
int ret;
if (!sd->entity.num_pads)
return NULL;
cfg = kcalloc(sd->entity.num_pads, sizeof(*cfg), GFP_KERNEL);
if (!cfg)
return NULL;
ret = v4l2_subdev_call(sd, pad, init_cfg, cfg);
if (ret < 0 && ret != -ENOIOCTLCMD) {
kfree(cfg);
return NULL;
}
return cfg;
}
EXPORT_SYMBOL_GPL(v4l2_subdev_alloc_pad_config);
void v4l2_subdev_free_pad_config(struct v4l2_subdev_pad_config *cfg)
{
kfree(cfg);
}
EXPORT_SYMBOL_GPL(v4l2_subdev_free_pad_config);
#endif /* CONFIG_MEDIA_CONTROLLER */
void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops)
{
INIT_LIST_HEAD(&sd->list);
BUG_ON(!ops);
sd->ops = ops;
sd->v4l2_dev = NULL;
sd->flags = 0;
sd->name[0] = '\0';
sd->grp_id = 0;
sd->dev_priv = NULL;
sd->host_priv = NULL;
#if defined(CONFIG_MEDIA_CONTROLLER)
sd->entity.name = sd->name;
sd->entity.obj_type = MEDIA_ENTITY_TYPE_V4L2_SUBDEV;
[media] uapi/media.h: Rename entities types to functions Rename the userspace types from MEDIA_ENT_T_ to MEDIA_ENT_F_ and add the backward compatibility bits. The changes at the .c files was generated by the following coccinelle script: @@ @@ -MEDIA_ENT_T_UNKNOWN +MEDIA_ENT_F_UNKNOWN @@ @@ -MEDIA_ENT_T_DVB_BASE +MEDIA_ENT_F_DVB_BASE @@ @@ -MEDIA_ENT_T_V4L2_BASE +MEDIA_ENT_F_V4L2_BASE @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_BASE +MEDIA_ENT_F_V4L2_SUBDEV_BASE @@ @@ -MEDIA_ENT_T_CONNECTOR_BASE +MEDIA_ENT_F_CONNECTOR_BASE @@ @@ -MEDIA_ENT_T_V4L2_VIDEO +MEDIA_ENT_F_IO_V4L @@ @@ -MEDIA_ENT_T_V4L2_VBI +MEDIA_ENT_F_IO_VBI @@ @@ -MEDIA_ENT_T_V4L2_SWRADIO +MEDIA_ENT_F_IO_SWRADIO @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN +MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN @@ @@ -MEDIA_ENT_T_CONN_RF +MEDIA_ENT_F_CONN_RF @@ @@ -MEDIA_ENT_T_CONN_SVIDEO +MEDIA_ENT_F_CONN_SVIDEO @@ @@ -MEDIA_ENT_T_CONN_COMPOSITE +MEDIA_ENT_F_CONN_COMPOSITE @@ @@ -MEDIA_ENT_T_CONN_TEST +MEDIA_ENT_F_CONN_TEST @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_SENSOR +MEDIA_ENT_F_CAM_SENSOR @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_FLASH +MEDIA_ENT_F_FLASH @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_LENS +MEDIA_ENT_F_LENS @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_DECODER +MEDIA_ENT_F_ATV_DECODER @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_TUNER +MEDIA_ENT_F_TUNER @@ @@ -MEDIA_ENT_T_DVB_DEMOD +MEDIA_ENT_F_DTV_DEMOD @@ @@ -MEDIA_ENT_T_DVB_DEMUX +MEDIA_ENT_F_TS_DEMUX @@ @@ -MEDIA_ENT_T_DVB_TSOUT +MEDIA_ENT_F_IO_DTV @@ @@ -MEDIA_ENT_T_DVB_CA +MEDIA_ENT_F_DTV_CA @@ @@ -MEDIA_ENT_T_DVB_NET_DECAP +MEDIA_ENT_F_DTV_NET_DECAP Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-12-11 03:25:41 +08:00
sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN;
#endif
}
EXPORT_SYMBOL(v4l2_subdev_init);
void v4l2_subdev_notify_event(struct v4l2_subdev *sd,
const struct v4l2_event *ev)
{
v4l2_event_queue(sd->devnode, ev);
v4l2_subdev_notify(sd, V4L2_DEVICE_NOTIFY_EVENT, (void *)ev);
}
EXPORT_SYMBOL_GPL(v4l2_subdev_notify_event);