vpe fops(vpe_open in particular) should be called only when VPDMA firmware
is loaded. File operations on the video device are possible the moment it is
registered.

Currently, we register the video device for VPE at driver probe, after calling
a vpdma helper to initialize VPDMA and load firmware. This function is
non-blocking(it calls request_firmware_nowait()), and doesn't ensure that the
firmware is actually loaded when it returns.

We remove the device registration from vpe probe, and move it to a callback
provided by the vpe driver to the vpdma library, through vpdma_create().

The ready field in vpdma_data is no longer needed since we always have firmware
loaded before the device is registered.

A minor problem with this approach is that if the video_register_device
fails(which doesn't really happen), the vpe platform device would be registered.
however, there won't be any v4l2 device corresponding to it.
Signed-off-by: NArchit Taneja <archit@ti.com>
Signed-off-by: NKamil Debski <k.debski@samsung.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

If the saa7134 module is loaded with the saa7134_userptr set to 1,
then USERPTR support is enabled. A check in buffer_prepare
verifies that the pointer is page-aligned.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Convert the saa7134 driver to vb2.

Note that while this uses the vb2-dma-sg version, the VB2_USERPTR mode is
disabled. The DMA hardware only supports DMAing full pages, and in the
USERPTR memory model the first and last scatter-gather buffer is almost
never a full page.

In practice this means that we can't use the VB2_USERPTR mode.

This has been tested with raw video, compressed video, VBI, radio, DVB and
video overlays.

Unfortunately, a vb2 conversion is one of those things you cannot split
up in smaller patches, it's all or nothing. This patch switches the whole
driver over to vb2, using the vb2 ioctl and fop helper functions.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

All dmaqueue's use saa7134_pgtable, so move it into struct saa7134_dmaqueue.
The videobuf_queue priv_data field now points to the dmaqueue struct.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Use consistent _vbq suffix for videobuf_queue fields.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

num_buffers can't be bigger than VIDEO_MAX_FRAME. This is assured by:
  num_buffers = min_t(unsigned int, req->count, VIDEO_MAX_FRAME);

However, this value is overriden by:
  num_buffers = max_t(unsigned int, req->count, q->min_buffers_needed);

It should, instead, use the previously calculated value as an input
to max_t:
  num_buffers = max_t(unsigned int, num_buffers, q->min_buffers_needed);
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The __vb2_queue_cancel function marks the queue as not streaming and
then WARNs when buffers are still owned by the driver. It proceeds to
complete all active buffers by calling vb2_buffer_done with the new
buffer state set to VB2_BUF_STATE_ERROR in that case. This triggers
another WARN_ON due to as new state not being VB2_BUF_STATE_QUEUED while
the queue is not streaming.

Check buffer ownership and complete all active buffers before marking
the queue as not streaming to avoid the double WARN_on.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

[media] em28xx: move fields wq_trigger and streaming_started from struct em28xx to struct em28xx_audio

Both wq_trigger and stream_started are used only to control the em28xx
alsa streaming. They don't belong to em28xx common struct.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The tuner address is only used by the v4l submodule and at tuner setup and
can be obtained from the board data directly (if specified).
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The tda9887 chipset is part of the analog tuner. Move it out of
em28xx-cards.

Also, it is used only one time by the v4l2 sub-module at tuner setup.

With that, we can get rid of an additional data inside the em28xx
common structure.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Move V4L2-specific frequency cache to struct em28xx_v4l2.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Despite being at the common em28xx struct, those two fields are
actually taking into account only the usage inside em28xx v4l2
submodule. So, move them out of the common struct.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Move some temporary capture tracking date to the em28xx_v4l2 struct,
as those info are used only by em28xx v4l2 submodule.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Move camera sensor resolution and xtal out of em28xx common struct,
as thore are used only by the em28xx v4l2 submodule.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The video progressive data fields belong to analog TV. Move them out
of the common em28xx struct.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The analog format struct belongs to analog TV. Move it out of the
common em28xx struct.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

TV norm is specific to analog TV reception. move it out of the common
em28xx struct.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The video input mode and control data also belong only to the
analog side. move them to struct em28xx_v4l.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The em28xx scaler data are used only for analog video. Move them to
struct em28xx_v4l2.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The video and VBI-specific VB2 queue and mutexes are used only by
the v4l2 sub-driver. Move them to the V4L2 struct, preventing
wasting memory if this sub-driver is not used.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

There are 3 struct video_device at the em28xx common struct,
for video, VBI and radio. They all are used only by the V4L2 driver.
So, move them to the v4l2-specific struct.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The current clock definition applies only to the V4L2 side of the
driver. Move its struct pointer to the v4l2_dev, where it belongs.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Controls are only applicable to V4L2 module. Move the corresponding
data structs to the proper place.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

That reduces a little bit the memory footprint when em28xx-video
is not loaded.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

[media] em28xx-video: simplify usage of the pointer to struct v4l2_ctrl_handler in em28xx_v4l2_init()

The local var hdl is already pointing to &dev->ctrl_handler.
Use it, instead of dereferencing it all the time.

Code cleanup. No functional changes.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Just a cleanup. No functional changes.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

It is no longer needed since nobody is calling i2c_get_adapdata() anymore.
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Signed-off-by: NMikhail Domrachev <mihail.domrychev@comexp.ru>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The message logged by v4l_print_cropcap should be a single line withouti
linebreaks, just like all the other v4l_print_<ioctl> functions.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

tcm825x.c:

changed printk to pr_info
Signed-off-by: NVitaly Osipov <vitaly.osipov@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

tcm825x.c:

fixing ERROR: Macros with complex values should be enclosed in parenthesis
Signed-off-by: NVitaly Osipov <vitaly.osipov@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

The second argument should be physical address rather than virtual address.
Signed-off-by: NMa Haijun <mahaijuns@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

When ivtv PCM device is accessed at the state where no firmware is
loaded, it oopses like:

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
  IP: [<ffffffffa049a881>] try_mailbox.isra.0+0x11/0x50 [ivtv]
  Call Trace:
    [<ffffffffa049aa20>] ivtv_api_call+0x160/0x6b0 [ivtv]
    [<ffffffffa049af86>] ivtv_api+0x16/0x40 [ivtv]
    [<ffffffffa049b10c>] ivtv_vapi+0xac/0xc0 [ivtv]
    [<ffffffffa049d40d>] ivtv_start_v4l2_encode_stream+0x19d/0x630 [ivtv]
    [<ffffffffa0530653>] snd_ivtv_pcm_capture_open+0x173/0x1c0 [ivtv_alsa]
    [<ffffffffa04526f1>] snd_pcm_open_substream+0x51/0x100 [snd_pcm]
    [<ffffffffa0452853>] snd_pcm_open+0xb3/0x260 [snd_pcm]
    [<ffffffffa0452a37>] snd_pcm_capture_open+0x37/0x50 [snd_pcm]
    [<ffffffffa033f557>] snd_open+0xa7/0x1e0 [snd]
    [<ffffffff8118a628>] chrdev_open+0x88/0x1d0
    [<ffffffff811840be>] do_dentry_open+0x1de/0x270
    [<ffffffff81193a73>] do_last+0x1c3/0xec0
    [<ffffffff81194826>] path_openat+0xb6/0x670
    [<ffffffff81195b65>] do_filp_open+0x35/0x80
    [<ffffffff81185449>] do_sys_open+0x129/0x210
    [<ffffffff815b782d>] system_call_fastpath+0x1a/0x1f

This patch adds the check of firmware at PCM open callback like other
open callbacks of this driver.

Bugzilla: https://apibugzilla.novell.com/show_bug.cgi?id=875440

Cc: <stable@vger.kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

This will help to debug driver, allows us to see the full name of
the device through /proc/interrupts.

           CPU0
...
 69:          0  mxc-avic  53  10023000.coda
...
Signed-off-by: NAlexander Shiyan <shc_work@mail.ru>
Acked-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

this patch adds support to release the buffer by calling
vb2_buffer_done(), with state marked as VB2_BUF_STATE_QUEUED
if start_streaming() call back fails.
Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

smatch says:
 drivers/media/usb/s2255/s2255drv.c:2246 s2255_probe() warn:
possible memory leak of 'dev'
Signed-off-by: NDaeseok Youn <daeseok.youn@gmail.com>
Acked-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

This patch moves data allocated using kzalloc to managed data allocated
using devm_kzalloc and cleans now unnecessary kfrees in probe and remove
functions.The label err_register is removed as it is no longer required.

The following Coccinelle semantic patch was used for making the change:

@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
  .probe = probefn,
  .remove = removefn,
};

@prb@
identifier platform.probefn, pdev;
expression e, e1, e2;
@@
probefn(struct platform_device *pdev, ...) {
  <+...
- e = kzalloc(e1, e2)
+ e = devm_kzalloc(&pdev->dev, e1, e2)
  ...
?-kfree(e);
  ...+>
}

@rem depends on prb@
identifier platform.removefn;
expression e;
@@
removefn(...) {
  <...
- kfree(e);
  ...>
}
Signed-off-by: NHimangi Saraogi <himangi774@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Fix format string mismatch in bw-qcam.c
Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

vb2_get_vma() copy the content of the vma to a new structure but set
some of its pointers to NULL.

One of this pointer is used by follow_pte() called by follow_pfn()
on io memory.

This can lead to a NULL pointer derreference.

The version of vma that has not been cleared must be used.

[  406.143320] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
[  406.143427] IP: [<ffffffff8115204c>] follow_pfn+0x2c/0x70
[  406.143491] PGD 6c3f0067 PUD 6c3ef067 PMD 0
[  406.143546] Oops: 0000 [#1] SMP
[  406.143587] Modules linked in: qtec_mem qt5023_video qtec_testgen qtec_xform videobuf2_core gpio_xilinx videobuf2_vmalloc videobuf2_dma_sg qtec_cmosis videobuf2_memops qtec_pcie qtec_white fglrx(PO) qt5023 spi_xilinx spi_bitbang
[  406.143852] CPU: 0 PID: 299 Comm: tracker Tainted: P           O 3.13.0-qtec-standard #10
[  406.143927] Hardware name: QTechnology QT5022/QT5022, BIOS PM_2.1.0.309 X64 04/04/2013
[  406.144000] task: ffff880085c82d60 ti: ffff880085abe000 task.ti: ffff880085abe000
[  406.144067] RIP: 0010:[<ffffffff8115204c>]  [<ffffffff8115204c>] follow_pfn+0x2c/0x70
[  406.144145] RSP: 0018:ffff880085abf888  EFLAGS: 00010296
[  406.144195] RAX: 0000000000000000 RBX: ffff880085abf8e0 RCX: ffff880085abf888
[  406.144260] RDX: ffff880085abf890 RSI: 00007fc52e173000 RDI: ffff8800863cbe40
[  406.144325] RBP: ffff880085abf8a8 R08: 0000000000000018 R09: ffff8800863cbf00
[  406.144388] R10: ffff880086703b80 R11: 00000000000001e0 R12: 0000000000018000
[  406.144452] R13: 0000000000000000 R14: ffffea0000000000 R15: ffff88015922fea0
[  406.144517] FS:  00007fc536e7c740(0000) GS:ffff88015ec00000(0000) knlGS:0000000000000000
[  406.144591] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  406.144644] CR2: 0000000000000040 CR3: 0000000066c9d000 CR4: 00000000000007f0
[  406.144708] Stack:
[  406.144731]  0000000000018000 00007fc52e18b000 0000000000000000 00007fc52e173000
[  406.144813]  ffff880085abf918 ffffffffa083b2fd ffff880085ab1ba8 0000000000000000
[  406.144894]  0000000000000000 0000000100000000 ffff880085abf928 ffff880159a20800
[  406.144976] Call Trace:
[  406.145011]  [<ffffffffa083b2fd>] vb2_dma_sg_get_userptr+0x14d/0x310 [videobuf2_dma_sg]
[  406.145089]  [<ffffffffa08507df>] __qbuf_userptr+0xbf/0x3e0 [videobuf2_core]
[  406.147229]  [<ffffffffa0041454>] ? mc_heap_lock_memory+0x1f4/0x490 [fglrx]
[  406.149234]  [<ffffffff813428f3>] ? cpumask_next_and+0x23/0x50
[  406.151223]  [<ffffffff810b2e38>] ? enqueue_task_fair+0x658/0xde0
[  406.153199]  [<ffffffff81061888>] ? native_smp_send_reschedule+0x48/0x60
[  406.155184]  [<ffffffff815836b9>] ? get_ctrl+0xa9/0xd0
[  406.157161]  [<ffffffff8116f4e4>] ? __kmalloc+0x1a4/0x1b0
[  406.159135]  [<ffffffffa0850b9c>] ? __vb2_queue_alloc+0x9c/0x4a0 [videobuf2_core]
[  406.161130]  [<ffffffffa0852d08>] __buf_prepare+0x1a8/0x210 [videobuf2_core]
[  406.163171]  [<ffffffffa0854c57>] __vb2_qbuf+0x27/0xcc [videobuf2_core]
[  406.165229]  [<ffffffffa0851dfd>] vb2_queue_or_prepare_buf+0x1ed/0x270 [videobuf2_core]
[  406.167325]  [<ffffffffa0854c30>] ? vb2_ioctl_querybuf+0x30/0x30 [videobuf2_core]
[  406.169419]  [<ffffffffa0851e9c>] vb2_qbuf+0x1c/0x20 [videobuf2_core]
[  406.171508]  [<ffffffffa0851ef8>] vb2_ioctl_qbuf+0x58/0x70 [videobuf2_core]
[  406.173604]  [<ffffffff8157d3a8>] v4l_qbuf+0x48/0x60
[  406.175681]  [<ffffffff8157b29c>] __video_do_ioctl+0x2bc/0x340
[  406.177779]  [<ffffffff8116f43c>] ? __kmalloc+0xfc/0x1b0
[  406.179883]  [<ffffffff8157cd0e>] ? video_usercopy+0x7e/0x470
[  406.181961]  [<ffffffff8157ce81>] video_usercopy+0x1f1/0x470
[  406.184021]  [<ffffffff8157afe0>] ? v4l_printk_ioctl+0xb0/0xb0
[  406.186085]  [<ffffffff810ae1ed>] ? account_system_time+0x8d/0x190
[  406.188149]  [<ffffffff8157d115>] video_ioctl2+0x15/0x20
[  406.190216]  [<ffffffff815781b3>] v4l2_ioctl+0x123/0x160
[  406.192251]  [<ffffffff810ce415>] ? rcu_eqs_enter+0x65/0xa0
[  406.194256]  [<ffffffff81186b28>] do_vfs_ioctl+0x88/0x560
[  406.196258]  [<ffffffff810ae145>] ? account_user_time+0x95/0xb0
[  406.198262]  [<ffffffff810ae6a4>] ? vtime_account_user+0x44/0x70
[  406.200215]  [<ffffffff81187091>] SyS_ioctl+0x91/0xb0
[  406.202107]  [<ffffffff817be109>] tracesys+0xd0/0xd5
[  406.203946] Code: 66 66 66 90 48 f7 47 50 00 44 00 00 b8 ea ff ff ff 74 52 55 48 89 e5 53 48 89 d3 48 8d 4d e0 48 8d 55 e8 48 83 ec 18 48 8b 47 40 <48> 8b 78 40 e8 8b fe ff ff 85 c0 75 27 48 8b 55 e8 48 b9 00 f0
[  406.208011] RIP  [<ffffffff8115204c>] follow_pfn+0x2c/0x70
[  406.209908]  RSP <ffff880085abf888>
[  406.211760] CR2: 0000000000000040
[  406.213676] ---[ end trace 996d9f64e6739a04 ]---
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>