diff options
Diffstat (limited to 'recipes-kernel/aim-v4l2')
| -rw-r--r-- | recipes-kernel/aim-v4l2/aim-v4l2.bb | 17 | ||||
| -rw-r--r-- | recipes-kernel/aim-v4l2/files/COPYING | 340 | ||||
| -rw-r--r-- | recipes-kernel/aim-v4l2/files/Makefile | 18 | ||||
| -rw-r--r-- | recipes-kernel/aim-v4l2/files/video.c | 609 |
4 files changed, 7 insertions, 977 deletions
diff --git a/recipes-kernel/aim-v4l2/aim-v4l2.bb b/recipes-kernel/aim-v4l2/aim-v4l2.bb index 597e1af82..b51fe2362 100644 --- a/recipes-kernel/aim-v4l2/aim-v4l2.bb +++ b/recipes-kernel/aim-v4l2/aim-v4l2.bb @@ -1,21 +1,18 @@ DESCRIPTION = "Example of how to build an external Linux kernel module" LICENSE = "GPLv2" -LIC_FILES_CHKSUM = "file://COPYING;md5=12f884d2ae1ff87c09e5b7ccc2c4ca7e \ - file://video.c;md5=9c5e932b69bc0074cf2a62f7977ad3dc \ - " +LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-2.0;md5=801f80980d171dd6425610833a22dbe6" +#LIC_FILES_CHKSUM = "file://COPYING;md5=12f884d2ae1ff87c09e5b7ccc2c4ca7e \ +# " inherit module -PR = "r0" PV = "0.1" -SRC_URI = "file://Makefile \ - file://../../mostcore/files/mostcore.h \ - file://video.c \ - file://COPYING \ - " +SRC_URI = "git://gerrit.automotivelinux.org/gerrit/src/most;protocol=https" -S = "${WORKDIR}" +S = "${WORKDIR}/git/driver/${PN}" +SRCREV = "ad245bdd60434dd46d6461f585d49db1b3b0d75b" +#SRCREV = "${AUTOREV}" # The inherit of module.bbclass will automatically name module packages with # "kernel-module-" prefix as required by the oe-core build environment. diff --git a/recipes-kernel/aim-v4l2/files/COPYING b/recipes-kernel/aim-v4l2/files/COPYING deleted file mode 100644 index 6d45519c8..000000000 --- a/recipes-kernel/aim-v4l2/files/COPYING +++ /dev/null @@ -1,340 +0,0 @@ - GNU GENERAL PUBLIC LICENSE - Version 2, June 1991 - - Copyright (C) 1989, 1991 Free Software Foundation, Inc. - 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - - Preamble - - The licenses for most software are designed to take away your -freedom to share and change it. By contrast, the GNU General Public -License is intended to guarantee your freedom to share and change free -software--to make sure the software is free for all its users. This -General Public License applies to most of the Free Software -Foundation's software and to any other program whose authors commit to -using it. (Some other Free Software Foundation software is covered by -the GNU Library General Public License instead.) You can apply it to -your programs, too. - - When we speak of free software, we are referring to freedom, not -price. Our General Public Licenses are designed to make sure that you -have the freedom to distribute copies of free software (and charge for -this service if you wish), that you receive source code or can get it -if you want it, that you can change the software or use pieces of it -in new free programs; and that you know you can do these things. - - To protect your rights, we need to make restrictions that forbid -anyone to deny you these rights or to ask you to surrender the rights. -These restrictions translate to certain responsibilities for you if you -distribute copies of the software, or if you modify it. - - For example, if you distribute copies of such a program, whether -gratis or for a fee, you must give the recipients all the rights that -you have. You must make sure that they, too, receive or can get the -source code. And you must show them these terms so they know their -rights. - - We protect your rights with two steps: (1) copyright the software, and -(2) offer you this license which gives you legal permission to copy, -distribute and/or modify the software. - - Also, for each author's protection and ours, we want to make certain -that everyone understands that there is no warranty for this free -software. If the software is modified by someone else and passed on, we -want its recipients to know that what they have is not the original, so -that any problems introduced by others will not reflect on the original -authors' reputations. - - Finally, any free program is threatened constantly by software -patents. We wish to avoid the danger that redistributors of a free -program will individually obtain patent licenses, in effect making the -program proprietary. To prevent this, we have made it clear that any -patent must be licensed for everyone's free use or not licensed at all. - - The precise terms and conditions for copying, distribution and -modification follow. - - GNU GENERAL PUBLIC LICENSE - TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION - - 0. This License applies to any program or other work which contains -a notice placed by the copyright holder saying it may be distributed -under the terms of this General Public License. The "Program", below, -refers to any such program or work, and a "work based on the Program" -means either the Program or any derivative work under copyright law: -that is to say, a work containing the Program or a portion of it, -either verbatim or with modifications and/or translated into another -language. (Hereinafter, translation is included without limitation in -the term "modification".) Each licensee is addressed as "you". - -Activities other than copying, distribution and modification are not -covered by this License; they are outside its scope. The act of -running the Program is not restricted, and the output from the Program -is covered only if its contents constitute a work based on the -Program (independent of having been made by running the Program). -Whether that is true depends on what the Program does. - - 1. You may copy and distribute verbatim copies of the Program's -source code as you receive it, in any medium, provided that you -conspicuously and appropriately publish on each copy an appropriate -copyright notice and disclaimer of warranty; keep intact all the -notices that refer to this License and to the absence of any warranty; -and give any other recipients of the Program a copy of this License -along with the Program. - -You may charge a fee for the physical act of transferring a copy, and -you may at your option offer warranty protection in exchange for a fee. - - 2. You may modify your copy or copies of the Program or any portion -of it, thus forming a work based on the Program, and copy and -distribute such modifications or work under the terms of Section 1 -above, provided that you also meet all of these conditions: - - a) You must cause the modified files to carry prominent notices - stating that you changed the files and the date of any change. - - b) You must cause any work that you distribute or publish, that in - whole or in part contains or is derived from the Program or any - part thereof, to be licensed as a whole at no charge to all third - parties under the terms of this License. - - c) If the modified program normally reads commands interactively - when run, you must cause it, when started running for such - interactive use in the most ordinary way, to print or display an - announcement including an appropriate copyright notice and a - notice that there is no warranty (or else, saying that you provide - a warranty) and that users may redistribute the program under - these conditions, and telling the user how to view a copy of this - License. (Exception: if the Program itself is interactive but - does not normally print such an announcement, your work based on - the Program is not required to print an announcement.) - -These requirements apply to the modified work as a whole. If -identifiable sections of that work are not derived from the Program, -and can be reasonably considered independent and separate works in -themselves, then this License, and its terms, do not apply to those -sections when you distribute them as separate works. But when you -distribute the same sections as part of a whole which is a work based -on the Program, the distribution of the whole must be on the terms of -this License, whose permissions for other licensees extend to the -entire whole, and thus to each and every part regardless of who wrote it. - -Thus, it is not the intent of this section to claim rights or contest -your rights to work written entirely by you; rather, the intent is to -exercise the right to control the distribution of derivative or -collective works based on the Program. - -In addition, mere aggregation of another work not based on the Program -with the Program (or with a work based on the Program) on a volume of -a storage or distribution medium does not bring the other work under -the scope of this License. - - 3. You may copy and distribute the Program (or a work based on it, -under Section 2) in object code or executable form under the terms of -Sections 1 and 2 above provided that you also do one of the following: - - a) Accompany it with the complete corresponding machine-readable - source code, which must be distributed under the terms of Sections - 1 and 2 above on a medium customarily used for software interchange; or, - - b) Accompany it with a written offer, valid for at least three - years, to give any third party, for a charge no more than your - cost of physically performing source distribution, a complete - machine-readable copy of the corresponding source code, to be - distributed under the terms of Sections 1 and 2 above on a medium - customarily used for software interchange; or, - - c) Accompany it with the information you received as to the offer - to distribute corresponding source code. (This alternative is - allowed only for noncommercial distribution and only if you - received the program in object code or executable form with such - an offer, in accord with Subsection b above.) - -The source code for a work means the preferred form of the work for -making modifications to it. For an executable work, complete source -code means all the source code for all modules it contains, plus any -associated interface definition files, plus the scripts used to -control compilation and installation of the executable. However, as a -special exception, the source code distributed need not include -anything that is normally distributed (in either source or binary -form) with the major components (compiler, kernel, and so on) of the -operating system on which the executable runs, unless that component -itself accompanies the executable. - -If distribution of executable or object code is made by offering -access to copy from a designated place, then offering equivalent -access to copy the source code from the same place counts as -distribution of the source code, even though third parties are not -compelled to copy the source along with the object code. - - 4. You may not copy, modify, sublicense, or distribute the Program -except as expressly provided under this License. Any attempt -otherwise to copy, modify, sublicense or distribute the Program is -void, and will automatically terminate your rights under this License. -However, parties who have received copies, or rights, from you under -this License will not have their licenses terminated so long as such -parties remain in full compliance. - - 5. You are not required to accept this License, since you have not -signed it. However, nothing else grants you permission to modify or -distribute the Program or its derivative works. These actions are -prohibited by law if you do not accept this License. Therefore, by -modifying or distributing the Program (or any work based on the -Program), you indicate your acceptance of this License to do so, and -all its terms and conditions for copying, distributing or modifying -the Program or works based on it. - - 6. Each time you redistribute the Program (or any work based on the -Program), the recipient automatically receives a license from the -original licensor to copy, distribute or modify the Program subject to -these terms and conditions. You may not impose any further -restrictions on the recipients' exercise of the rights granted herein. -You are not responsible for enforcing compliance by third parties to -this License. - - 7. If, as a consequence of a court judgment or allegation of patent -infringement or for any other reason (not limited to patent issues), -conditions are imposed on you (whether by court order, agreement or -otherwise) that contradict the conditions of this License, they do not -excuse you from the conditions of this License. If you cannot -distribute so as to satisfy simultaneously your obligations under this -License and any other pertinent obligations, then as a consequence you -may not distribute the Program at all. For example, if a patent -license would not permit royalty-free redistribution of the Program by -all those who receive copies directly or indirectly through you, then -the only way you could satisfy both it and this License would be to -refrain entirely from distribution of the Program. - -If any portion of this section is held invalid or unenforceable under -any particular circumstance, the balance of the section is intended to -apply and the section as a whole is intended to apply in other -circumstances. - -It is not the purpose of this section to induce you to infringe any -patents or other property right claims or to contest validity of any -such claims; this section has the sole purpose of protecting the -integrity of the free software distribution system, which is -implemented by public license practices. Many people have made -generous contributions to the wide range of software distributed -through that system in reliance on consistent application of that -system; it is up to the author/donor to decide if he or she is willing -to distribute software through any other system and a licensee cannot -impose that choice. - -This section is intended to make thoroughly clear what is believed to -be a consequence of the rest of this License. - - 8. If the distribution and/or use of the Program is restricted in -certain countries either by patents or by copyrighted interfaces, the -original copyright holder who places the Program under this License -may add an explicit geographical distribution limitation excluding -those countries, so that distribution is permitted only in or among -countries not thus excluded. In such case, this License incorporates -the limitation as if written in the body of this License. - - 9. The Free Software Foundation may publish revised and/or new versions -of the General Public License from time to time. Such new versions will -be similar in spirit to the present version, but may differ in detail to -address new problems or concerns. - -Each version is given a distinguishing version number. If the Program -specifies a version number of this License which applies to it and "any -later version", you have the option of following the terms and conditions -either of that version or of any later version published by the Free -Software Foundation. If the Program does not specify a version number of -this License, you may choose any version ever published by the Free Software -Foundation. - - 10. If you wish to incorporate parts of the Program into other free -programs whose distribution conditions are different, write to the author -to ask for permission. For software which is copyrighted by the Free -Software Foundation, write to the Free Software Foundation; we sometimes -make exceptions for this. Our decision will be guided by the two goals -of preserving the free status of all derivatives of our free software and -of promoting the sharing and reuse of software generally. - - NO WARRANTY - - 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY -FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN -OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES -PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED -OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF -MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS -TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE -PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, -REPAIR OR CORRECTION. - - 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING -WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR -REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, -INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING -OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED -TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY -YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER -PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE -POSSIBILITY OF SUCH DAMAGES. - - END OF TERMS AND CONDITIONS - - How to Apply These Terms to Your New Programs - - If you develop a new program, and you want it to be of the greatest -possible use to the public, the best way to achieve this is to make it -free software which everyone can redistribute and change under these terms. - - To do so, attach the following notices to the program. It is safest -to attach them to the start of each source file to most effectively -convey the exclusion of warranty; and each file should have at least -the "copyright" line and a pointer to where the full notice is found. - - <one line to give the program's name and a brief idea of what it does.> - Copyright (C) <year> <name of author> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - 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. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - -Also add information on how to contact you by electronic and paper mail. - -If the program is interactive, make it output a short notice like this -when it starts in an interactive mode: - - Gnomovision version 69, Copyright (C) year name of author - Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. - This is free software, and you are welcome to redistribute it - under certain conditions; type `show c' for details. - -The hypothetical commands `show w' and `show c' should show the appropriate -parts of the General Public License. Of course, the commands you use may -be called something other than `show w' and `show c'; they could even be -mouse-clicks or menu items--whatever suits your program. - -You should also get your employer (if you work as a programmer) or your -school, if any, to sign a "copyright disclaimer" for the program, if -necessary. Here is a sample; alter the names: - - Yoyodyne, Inc., hereby disclaims all copyright interest in the program - `Gnomovision' (which makes passes at compilers) written by James Hacker. - - <signature of Ty Coon>, 1 April 1989 - Ty Coon, President of Vice - -This General Public License does not permit incorporating your program into -proprietary programs. If your program is a subroutine library, you may -consider it more useful to permit linking proprietary applications with the -library. If this is what you want to do, use the GNU Library General -Public License instead of this License. diff --git a/recipes-kernel/aim-v4l2/files/Makefile b/recipes-kernel/aim-v4l2/files/Makefile deleted file mode 100644 index 4bf1be7fd..000000000 --- a/recipes-kernel/aim-v4l2/files/Makefile +++ /dev/null @@ -1,18 +0,0 @@ -# Makefile -# - -SRC := $(shell pwd) - -obj-m += aim_v4l2.o -aim_v4l2-y := video.o -CFLAGS_video.o := -Idrivers/media/video -I$(src)/../../mostcore/files/ - -all: - $(MAKE) -C $(KERNEL_SRC) M=$(SRC) modules - -modules_install: - $(MAKE) -C $(KERNEL_SRC) M=$(SRC) modules_install - -clean: - $(MAKE) -C $(KERNEL_SRC) M=$(SRC) clean - diff --git a/recipes-kernel/aim-v4l2/files/video.c b/recipes-kernel/aim-v4l2/files/video.c deleted file mode 100644 index 13abf7c27..000000000 --- a/recipes-kernel/aim-v4l2/files/video.c +++ /dev/null @@ -1,609 +0,0 @@ -/* - * V4L2 AIM - V4L2 Application Interface Module for MostCore - * - * Copyright (C) 2015, Microchip Technology Germany II GmbH & Co. KG - * - * 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. - * - * This file is licensed under GPLv2. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/suspend.h> -#include <linux/videodev2.h> -#include <linux/mutex.h> -#include <media/v4l2-common.h> -#include <media/v4l2-ioctl.h> -#include <media/v4l2-event.h> -#include <media/v4l2-device.h> -#include <media/v4l2-ctrls.h> -#include <media/v4l2-fh.h> - -#include "mostcore.h" - -#define V4L2_AIM_MAX_INPUT 1 - -static struct most_aim aim_info; - -struct most_video_dev { - struct most_interface *iface; - int ch_idx; - struct list_head list; - bool mute; - - struct list_head pending_mbos; - spinlock_t list_lock; - - struct v4l2_device v4l2_dev; - atomic_t access_ref; - struct video_device *vdev; - unsigned int ctrl_input; - - struct mutex lock; - - wait_queue_head_t wait_data; -}; - -struct aim_fh { - /* must be the first field of this struct! */ - struct v4l2_fh fh; - struct most_video_dev *mdev; - u32 offs; -}; - -static struct list_head video_devices = LIST_HEAD_INIT(video_devices); -static struct spinlock list_lock; - -static inline bool data_ready(struct most_video_dev *mdev) -{ - return !list_empty(&mdev->pending_mbos); -} - -static inline struct mbo *get_top_mbo(struct most_video_dev *mdev) -{ - return list_first_entry(&mdev->pending_mbos, struct mbo, list); -} - -static int aim_vdev_open(struct file *filp) -{ - int ret; - struct video_device *vdev = video_devdata(filp); - struct most_video_dev *mdev = video_drvdata(filp); - struct aim_fh *fh; - - pr_info("aim_vdev_open()\n"); - - switch (vdev->vfl_type) { - case VFL_TYPE_GRABBER: - break; - default: - return -EINVAL; - } - - fh = kzalloc(sizeof(*fh), GFP_KERNEL); - if (!fh) - return -ENOMEM; - - if (!atomic_inc_and_test(&mdev->access_ref)) { - pr_err("too many clients\n"); - ret = -EBUSY; - goto err_dec; - } - - fh->mdev = mdev; - v4l2_fh_init(&fh->fh, vdev); - filp->private_data = fh; - - v4l2_fh_add(&fh->fh); - - ret = most_start_channel(mdev->iface, mdev->ch_idx, &aim_info); - if (ret) { - pr_err("most_start_channel() failed\n"); - goto err_rm; - } - - return 0; - -err_rm: - v4l2_fh_del(&fh->fh); - v4l2_fh_exit(&fh->fh); - -err_dec: - atomic_dec(&mdev->access_ref); - kfree(fh); - return ret; -} - -static int aim_vdev_close(struct file *filp) -{ - struct aim_fh *fh = filp->private_data; - struct most_video_dev *mdev = fh->mdev; - struct mbo *mbo, *tmp; - - pr_info("aim_vdev_close()\n"); - - /* - * We need to put MBOs back before we call most_stop_channel() - * to deallocate MBOs. - * From the other hand mostcore still calling rx_completion() - * to deliver MBOs until most_stop_channel() is called. - * Use mute to work around this issue. - * This must be implemented in core. - */ - - spin_lock(&mdev->list_lock); - mdev->mute = true; - list_for_each_entry_safe(mbo, tmp, &mdev->pending_mbos, list) { - list_del(&mbo->list); - spin_unlock(&mdev->list_lock); - most_put_mbo(mbo); - spin_lock(&mdev->list_lock); - } - spin_unlock(&mdev->list_lock); - most_stop_channel(mdev->iface, mdev->ch_idx, &aim_info); - mdev->mute = false; - - v4l2_fh_del(&fh->fh); - v4l2_fh_exit(&fh->fh); - - atomic_dec(&mdev->access_ref); - kfree(fh); - return 0; -} - -static ssize_t aim_vdev_read(struct file *filp, char __user *buf, - size_t count, loff_t *pos) -{ - struct aim_fh *fh = filp->private_data; - struct most_video_dev *mdev = fh->mdev; - int ret = 0; - - if (*pos) - return -ESPIPE; - - if (!mdev) - return -ENODEV; - - /* wait for the first buffer */ - if (!(filp->f_flags & O_NONBLOCK)) { - if (wait_event_interruptible(mdev->wait_data, data_ready(mdev))) - return -ERESTARTSYS; - } - - if (!data_ready(mdev)) - return -EAGAIN; - - while (count > 0 && data_ready(mdev)) { - struct mbo *const mbo = get_top_mbo(mdev); - int const rem = mbo->processed_length - fh->offs; - int const cnt = rem < count ? rem : count; - - if (copy_to_user(buf, mbo->virt_address + fh->offs, cnt)) { - pr_err("read: copy_to_user failed\n"); - if (!ret) - ret = -EFAULT; - return ret; - } - - fh->offs += cnt; - count -= cnt; - buf += cnt; - ret += cnt; - - if (cnt >= rem) { - fh->offs = 0; - spin_lock(&mdev->list_lock); - list_del(&mbo->list); - spin_unlock(&mdev->list_lock); - most_put_mbo(mbo); - } - } - return ret; -} - -static unsigned int aim_vdev_poll(struct file *filp, poll_table *wait) -{ - struct aim_fh *fh = filp->private_data; - struct most_video_dev *mdev = fh->mdev; - unsigned int mask = 0; - - /* only wait if no data is available */ - if (!data_ready(mdev)) - poll_wait(filp, &mdev->wait_data, wait); - if (data_ready(mdev)) - mask |= POLLIN | POLLRDNORM; - - return mask; -} - -static void aim_set_format_struct(struct v4l2_format *f) -{ - f->fmt.pix.width = 8; - f->fmt.pix.height = 8; - f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; - f->fmt.pix.bytesperline = 0; - f->fmt.pix.sizeimage = 188 * 2; - f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; - f->fmt.pix.field = V4L2_FIELD_NONE; - f->fmt.pix.priv = 0; -} - -static int aim_set_format(struct most_video_dev *mdev, unsigned int cmd, - struct v4l2_format *format) -{ - if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_MPEG) - return -EINVAL; - - if (cmd == VIDIOC_TRY_FMT) - return 0; - - aim_set_format_struct(format); - - return 0; -} - -static int vidioc_querycap(struct file *file, void *priv, - struct v4l2_capability *cap) -{ - struct aim_fh *fh = priv; - struct most_video_dev *mdev = fh->mdev; - - pr_info("vidioc_querycap()\n"); - - strlcpy(cap->driver, "v4l2_most_aim", sizeof(cap->driver)); - strlcpy(cap->card, "my_card", sizeof(cap->card)); - snprintf(cap->bus_info, sizeof(cap->bus_info), - "%s", mdev->iface->description); - - cap->capabilities = - V4L2_CAP_READWRITE | - V4L2_CAP_TUNER | - V4L2_CAP_VIDEO_CAPTURE; - return 0; -} - -static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_fmtdesc *f) -{ - pr_info("vidioc_enum_fmt_vid_cap() %d\n", f->index); - - if (f->index) - return -EINVAL; - - strcpy(f->description, "MPEG"); - f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - f->flags = V4L2_FMT_FLAG_COMPRESSED; - f->pixelformat = V4L2_PIX_FMT_MPEG; - - return 0; -} - -static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - pr_info("vidioc_g_fmt_vid_cap()\n"); - - aim_set_format_struct(f); - return 0; -} - -static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct aim_fh *fh = priv; - struct most_video_dev *mdev = fh->mdev; - - return aim_set_format(mdev, VIDIOC_TRY_FMT, f); -} - -static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct aim_fh *fh = priv; - struct most_video_dev *mdev = fh->mdev; - - return aim_set_format(mdev, VIDIOC_S_FMT, f); -} - -static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm) -{ - pr_info("vidioc_g_std()\n"); - - *norm = V4L2_STD_UNKNOWN; - return 0; -} - -static int vidioc_enum_input(struct file *file, void *priv, - struct v4l2_input *input) -{ - struct aim_fh *fh = priv; - struct most_video_dev *mdev = fh->mdev; - - if (input->index >= V4L2_AIM_MAX_INPUT) - return -EINVAL; - - strcpy(input->name, "MOST Video"); - input->type |= V4L2_INPUT_TYPE_CAMERA; - input->audioset = 0; - - input->std = mdev->vdev->tvnorms; - - return 0; -} - -static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) -{ - struct aim_fh *fh = priv; - struct most_video_dev *mdev = fh->mdev; - *i = mdev->ctrl_input; - return 0; -} - -static int vidioc_s_input(struct file *file, void *priv, unsigned int index) -{ - struct aim_fh *fh = priv; - struct most_video_dev *mdev = fh->mdev; - - pr_info("vidioc_s_input(%d)\n", index); - - if (index >= V4L2_AIM_MAX_INPUT) - return -EINVAL; - mdev->ctrl_input = index; - return 0; -} - -static struct v4l2_file_operations aim_fops = { - .owner = THIS_MODULE, - .open = aim_vdev_open, - .release = aim_vdev_close, - .read = aim_vdev_read, - .poll = aim_vdev_poll, - .unlocked_ioctl = video_ioctl2, -}; - -static const struct v4l2_ioctl_ops video_ioctl_ops = { - .vidioc_querycap = vidioc_querycap, - .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, - .vidioc_g_std = vidioc_g_std, - .vidioc_enum_input = vidioc_enum_input, - .vidioc_g_input = vidioc_g_input, - .vidioc_s_input = vidioc_s_input, -}; - -static const struct video_device aim_videodev_template = { - .fops = &aim_fops, - .release = video_device_release, - .ioctl_ops = &video_ioctl_ops, - .tvnorms = V4L2_STD_UNKNOWN, -}; - -/**************************************************************************/ - -static struct most_video_dev *get_aim_dev( - struct most_interface *iface, int channel_idx) -{ - struct most_video_dev *mdev, *tmp; - - spin_lock(&list_lock); - list_for_each_entry_safe(mdev, tmp, &video_devices, list) { - if (mdev->iface == iface && mdev->ch_idx == channel_idx) { - spin_unlock(&list_lock); - return mdev; - } - } - spin_unlock(&list_lock); - return NULL; -} - -static int aim_rx_data(struct mbo *mbo) -{ - struct most_video_dev *mdev = - get_aim_dev(mbo->ifp, mbo->hdm_channel_id); - - if (!mdev) - return -EIO; - - spin_lock(&mdev->list_lock); - if (unlikely(mdev->mute)) { - spin_unlock(&mdev->list_lock); - return -EIO; - } - - list_add_tail(&mbo->list, &mdev->pending_mbos); - spin_unlock(&mdev->list_lock); - wake_up_interruptible(&mdev->wait_data); - return 0; -} - -static int aim_register_videodev(struct most_video_dev *mdev) -{ - int retval = -ENOMEM; - int ret; - - pr_info("aim_register_videodev()\n"); - - init_waitqueue_head(&mdev->wait_data); - - /* allocate and fill v4l2 video struct */ - mdev->vdev = video_device_alloc(); - if (!mdev->vdev) - return -ENOMEM; - - /* Fill the video capture device struct */ - *mdev->vdev = aim_videodev_template; - mdev->vdev->v4l2_dev = &mdev->v4l2_dev; - mdev->vdev->lock = &mdev->lock; - strcpy(mdev->vdev->name, "most v4l2 aim video"); - - /* Register the v4l2 device */ - video_set_drvdata(mdev->vdev, mdev); - retval = video_register_device(mdev->vdev, VFL_TYPE_GRABBER, -1); - if (retval != 0) { - pr_err("video_register_device failed (%d)\n", retval); - ret = -ENODEV; - goto err_vbi_dev; - } - - return 0; - -err_vbi_dev: - video_device_release(mdev->vdev); - return ret; -} - -static void aim_unregister_videodev(struct most_video_dev *mdev) -{ - pr_info("aim_unregister_videodev()\n"); - - video_unregister_device(mdev->vdev); -} - -static void aim_v4l2_dev_release(struct v4l2_device *v4l2_dev) -{ - struct most_video_dev *mdev = - container_of(v4l2_dev, struct most_video_dev, v4l2_dev); - - v4l2_device_unregister(v4l2_dev); - kfree(mdev); -} - -static int aim_probe_channel(struct most_interface *iface, int channel_idx, - struct most_channel_config *ccfg, - struct kobject *parent, char *name) -{ - int ret; - struct most_video_dev *mdev = get_aim_dev(iface, channel_idx); - - pr_info("aim_probe_channel()\n"); - - if (mdev) { - pr_err("channel already linked\n"); - return -EEXIST; - } - - if (ccfg->direction != MOST_CH_RX) { - pr_err("wrong direction, expect rx\n"); - return -EINVAL; - } - - if (ccfg->data_type != MOST_CH_SYNC && - ccfg->data_type != MOST_CH_ISOC_AVP) { - pr_err("wrong channel type, expect sync or isoc_avp\n"); - return -EINVAL; - } - - mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); - if (!mdev) - return -ENOMEM; - - mutex_init(&mdev->lock); - atomic_set(&mdev->access_ref, -1); - spin_lock_init(&mdev->list_lock); - INIT_LIST_HEAD(&mdev->pending_mbos); - mdev->iface = iface; - mdev->ch_idx = channel_idx; - mdev->v4l2_dev.release = aim_v4l2_dev_release; - - /* Create the v4l2_device */ - strlcpy(mdev->v4l2_dev.name, "most_video_device", - sizeof(mdev->v4l2_dev.name)); - ret = v4l2_device_register(NULL, &mdev->v4l2_dev); - if (ret) { - pr_err("v4l2_device_register() failed\n"); - kfree(mdev); - return ret; - } - - ret = aim_register_videodev(mdev); - if (ret) - goto err_unreg; - - spin_lock(&list_lock); - list_add(&mdev->list, &video_devices); - spin_unlock(&list_lock); - return 0; - -err_unreg: - v4l2_device_disconnect(&mdev->v4l2_dev); - v4l2_device_put(&mdev->v4l2_dev); - return ret; -} - -static int aim_disconnect_channel(struct most_interface *iface, - int channel_idx) -{ - struct most_video_dev *mdev = get_aim_dev(iface, channel_idx); - - pr_info("aim_disconnect_channel()\n"); - - if (!mdev) { - pr_err("no such channel is linked\n"); - return -ENOENT; - } - - spin_lock(&list_lock); - list_del(&mdev->list); - spin_unlock(&list_lock); - - aim_unregister_videodev(mdev); - v4l2_device_disconnect(&mdev->v4l2_dev); - v4l2_device_put(&mdev->v4l2_dev); - return 0; -} - -static struct most_aim aim_info = { - .name = "v4l", - .probe_channel = aim_probe_channel, - .disconnect_channel = aim_disconnect_channel, - .rx_completion = aim_rx_data, -}; - -static int __init aim_init(void) -{ - spin_lock_init(&list_lock); - return most_register_aim(&aim_info); -} - -static void __exit aim_exit(void) -{ - struct most_video_dev *mdev, *tmp; - - /* - * As the mostcore currently doesn't call disconnect_channel() - * for linked channels while we call most_deregister_aim() - * we simulate this call here. - * This must be fixed in core. - */ - spin_lock(&list_lock); - list_for_each_entry_safe(mdev, tmp, &video_devices, list) { - list_del(&mdev->list); - spin_unlock(&list_lock); - - aim_unregister_videodev(mdev); - v4l2_device_disconnect(&mdev->v4l2_dev); - v4l2_device_put(&mdev->v4l2_dev); - spin_lock(&list_lock); - } - spin_unlock(&list_lock); - - most_deregister_aim(&aim_info); - BUG_ON(!list_empty(&video_devices)); -} - -module_init(aim_init); -module_exit(aim_exit); - -MODULE_DESCRIPTION("V4L2 Application Interface Module for MostCore"); -MODULE_AUTHOR("Andrey Shvetsov <andrey.shvetsov@k2l.de>"); -MODULE_LICENSE("GPL"); |