This reverts commit a92591a711.
From: Michael Büsch <m@bues.ch>
To: linux-media@vger.kernel.org
Cc: mchehab@redhat.com
Subject: Re: [git:v4l-dvb/for_v3.9] [media] fc0011: Return early, if the frequency is already tuned
Date: Mon, 11 Feb 2013 21:59:19 +0100
Can you please revert this one again? It might cause issues if the dvb device
is reset/reinitialized.
Requested-by: Michael Büsch <m@bues.ch>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Commits 5e6e81b289 (cx18) and
2aebbf6737 (ivtv) added an __init
annotation to the cx18-alsa-load and ivtv-alsa-load functions. However,
these functions are called *after* initialization by the main cx18/ivtv
driver. By that time the memory containing those functions is already
freed and your machine goes BOOM.
Cc: stable@vger.kernel.org # for 3.8
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
With the conversion to videobuf2, some unnecessary calls of
em28xx_set_alternate() have been removed. It is now called at analog streaming
start only.
This has unveiled a bug that causes USB bulk transfers to fail with all urbs
having status -EVOERFLOW.
The reason is, that for bulk transfers usb_set_interface() needs to be called
even if the previous alt setting was the same (side note: bulk transfers seem
to work only with alt=0).
While it seems to be NOT necessary for isoc transfers, it's reasonable to just
call usb_set_interface() unconditionally in em28xx_set_alternate().
Also add a comment that explains the issue to prevent regressions in the future.
Cc: stable@vger.kernel.org # for 3.8
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The address of a variable is impossible to be null, so we remove the check.
Signed-off-by: Cong Ding <dinggnu@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add some sanity checks to the calculations and make the REG_16 register write consistent
with the other ones.
Signed-off-by: Michael Buesch <m@bues.ch>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch was applied by mistake. Michael thinks that it
it needs more work than simply moving the soft reset.
So, it should be held back for further review.
This reverts commit 0a3237704d.
Requested by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Assign the maximum instead of masking with the maximum on value overflow.
Signed-off-by: Michael Buesch <m@bues.ch>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
tm6000_poll could use an uninitialized buf pointer. Move the buf-handling
code inside the 'if' that initializes the buf pointer.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch is driven by a static checker warning.
The ttusb_process_muxpack() function is only called from
ttusb_process_frame(). Before calling, it verifies that len >= 2. The
problem is that len == 2 is not valid and would lead to an array
underflow.
Odd number values for len are also invalid and would lead to reading
past the end of the array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Without this patch we get the following build error:
drivers/media/platform/s5p-tv/mixer_video.c:
In function ‘find_and_register_subdev’:
drivers/media/platform/s5p-tv/mixer_video.c:42:34: error:
‘platform_bus_type’ undeclared (first use in this function)
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Without this patch we get the following compilation errors:
drivers/media/platform/s5p-tv/mixer.h:345:13: error: Expected ; at end of declaration
drivers/media/platform/s5p-tv/mixer.h:345:13: error: got mxr_irq_handler
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The bytesperline calculation was incorrect: it used the old width instead of
the provided width. Fixed.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
While running checkpatch.pl after the last patch, I noticed
lots of those:
WARNING: please, no space before tabs
#151: FILE: drivers/media/common/tveeprom.c:99:
+^I{ TUNER_ABSENT, ^I^I"None" },$
(together with other checkpatch.pl errors/warnings)
While I won't be fixing everything, as I have already an
script to fix the above, let's do it, in order to clean it
a little bit.
While here, also drop cmacs-specific format text at the end.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The tveeprom module is a helper module for Hauppauge-based eeproms.
It's used by many drivers and the i2c part is actually optional, so this
driver is better placed in the media/common directory.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The btcx-risc module is a helper module for bttv/conexant based TV cards.
It isn't an i2c module at all, instead it should be in common since it is
used by 4 pci drivers.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The cx2341x module is a helper module for conexant-based MPEG encoders.
It isn't an i2c module at all, instead it should be in common since it is
used by 7 pci and usb drivers to handle the MPEG setup.
It also shouldn't be visible in the config menu as it is always
selected automatically by those drivers that need it.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The ttusb2 module is already updated to recognize the TechnoTrend CT-3650
CI DVB C/T USB2.0 receiver in addition to the Pinnacle 400e. But if
MEDIA_SUBDRV_AUTOSELECT is used, the required tuner and demodulator
modules are not automatically selected. Here's a patch to fix that and add a
note of the CT-3650 to the online help of the ttusb2 module.
This patch applies cleanly to 3.7.6 and other 3.7.x kernels.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch move the soft reset to the attach function because with dual
tuners, when one tuner do reset, the other one is perturbed, and the
stream has errors.
Signed-off-by: Jose Alberto Reguero <jareguero@telefonica.net>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
A recent commit broke compilation of 3 camera drivers: for PXA2x0, OMAP1
and MX1 by using a wrong pointer. Fix them.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch adds new capture board Hawell HW-9004V1. This card has 4 SAA71300 chips. In order to work it is needed to initialize its registers (gpio mask and value). The value of these registers were dumped under Windows using flytest.
Signed-off-by: Vadim Frolov <fralik@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This allocation had no error checking. It didn't need to be under
the mutex so I moved it out form there. That makes the error handling
easier and is a potential speed up.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
via-camera and mcam-core were the only bridge drivers that used ov7670.
Since now they have been moved to use the ctrl framework, the old
legacy callbacks in the ov7670 can be removed.
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
And added a missing kfree to clean up the via_camera struct.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Some bridge drivers capture pixels during blanking periods if
pixclk is enabled. In order to avoid capturing bogus data we need to
disable pixclk in the sensor during those blanking periods.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
For a frame rate of 30 fps a pixclk of 24MHz is needed. For those
cases where the ov7670 has a clean 24MHz input (xvclk) the PLL
can be bypassed.
This will result in a value of clkrc of 1, which means that in practice
pixclk = xvclk (input clock)
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
According to the datasheet ov7675 uses a formula to achieve
the desired framerate that is different from the operations
done in the current code.
In fact, this formula should apply to ov7670 too. This would
mean that current code is wrong but, in order to preserve
compatibility, the new formula will be used for ov7675 only.
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
'min_height' and 'min_width' are variables that allow to specify the minimum
resolution that the sensor will achieve. This patch make v4l2 fmt callbacks
consider this parameters in order to return valid data to user space.
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
ov7675 and ov7670 share the same registers but there is no way
to distinguish them at runtime. However, they require different
tweaks to achieve the desired resolution. For this reason this
patch adds a new ov7675 entry to the ov7670_id table.
Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
If more than 127 different lengths are transmitted then the driver causes
an overrun on sample_lens. Try to send as much as possible and return the
amount sent.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This transceiver expects the set IR TX ports and IR data as seperate
packets, like the Windows driver does. Remove unnecessary kzalloc.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The GET_REVISION command puts the device in an unresponsive state,
although it continues to report any IR activity. Note that GET_REVISION
command is not documented, nor is any possible response to it parsed.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
- move the bit shifting of width+height values inside the function
- fix the debug message format and output values
- add comment about the size limit (e.g. EM277x supports >2MPix)
- make void, because error checking is incomplete and we never check the
returned value (we would continue anyway)
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
All drivers which use this subdevice use also the control framework.
The v4l2_subdev_core_ops operations {query/g_/s_}ctrl are useless because
device drivers will inherit controls from this subdevice.
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch re-write the driver and use the videobuf2
interface instead of the old videobuf. Moreover, it uses also
the control framework which allows the driver to inherit
controls from its subdevice (ADV7180). Finally the driver does not
implement custom file operation but it uses the generic ones from
videobuf2 and v4l2_fh
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The buffer ioctls (VIDIOC_REQBUFS, VIDIOC_QUERYBUF, VIDIOC_QBUF, VIDIOC_DQBUF,
VIDIOC_EXPBUF, VIDIOC_CREATE_BUFS, VIDIOC_PREPARE_BUF) are not applicable for
radio devices. Hence, they should be set valid only for non-radio devices in
determine_valid_ioctls().
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Clear the proper array when deregistering FIMC-LITE devices. Now
fimc[] array is erroneously accessed instead of fimc_lite[] and
fimc_md_unregister_entities() function call can result in an oops
from NULL pointer dereference, since fmd->fimc[] is cleared earlier.
This might happen in normal conditions when the driver's probing
is deferred and then retried.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
In some circumstances after issuing the V4L2_ENC_CMD_STOP the application
could freeze. This patch prevents this behavior.
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Move e_clkput label after the clk_disable() call so a not acquired clock
is not attempted to be disabled. This fixes runtime warnings like:
s5p-mipi-csis 11880000.csis: failed to get clock: sclk_csis
------------[ cut here ]------------
WARNING: at drivers/clk/clk.c:478 clk_disable+0x24/0x34()
Modules linked in:
[<c001603c>] (unwind_backtrace+0x0/0x13c) from [<c0022060>] (warn_slowpath_common+0x54/0x64)
[<c0022060>] (warn_slowpath_common+0x54/0x64) from [<c002208c>] (warn_slowpath_null+0x1c/0x24)
[<c002208c>] (warn_slowpath_null+0x1c/0x24) from [<c033f868>] (clk_disable+0x24/0x34)
[<c033f868>] (clk_disable+0x24/0x34) from [<c02feff8>] (s5pcsis_probe+0x25c/0x4c8)
[<c02feff8>] (s5pcsis_probe+0x25c/0x4c8) from [<c0268e34>] (platform_drv_probe+0x18/0x1c)
[<c0268e34>] (platform_drv_probe+0x18/0x1c) from [<c0267700>] (driver_probe_device+0xa4/0x368)
[<c0267700>] (driver_probe_device+0xa4/0x368) from [<c0267a50>] (__driver_attach+0x8c/0x90)
[<c0267a50>] (__driver_attach+0x8c/0x90) from [<c0265c94>] (bus_for_each_dev+0x60/0x8c)
[<c0265c94>] (bus_for_each_dev+0x60/0x8c) from [<c02665e8>] (bus_add_driver+0x20c/0x2d4)
[<c02665e8>] (bus_add_driver+0x20c/0x2d4) from [<c0268064>] (driver_register+0x78/0x194)
[<c0268064>] (driver_register+0x78/0x194) from [<c0008668>] (do_one_initcall+0x34/0x188)
[<c0008668>] (do_one_initcall+0x34/0x188) from [<c03de57c>] (kernel_init+0x180/0x2f0)
[<c03de57c>] (kernel_init+0x180/0x2f0) from [<c000f0d8>] (ret_from_fork+0x14/0x3c)
---[ end trace 0c5a55345c42530b ]---
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Those optional operations are used to release and reacquire the queue
lock when videobuf2 needs to perform operations that sleep for a long
time, such as waiting for a buffer to be complete. Implement them to
avoid blocking qbuf or streamoff calls when a dqbuf is in progress.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.
devm_ioremap_resource() provides its own error messages so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch introduces the use of IS_ENABLED() macro. For example,
replacing:
#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
with:
#if IS_ENABLED(CONFIG_I2C)
All changes made by this patch respect the same replacement pattern.
Reported-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
