When the demod driver puts the demod into sleep or shutdown state and it's
status is then polled e.g. via "dvb-fe-tool -m", i2c errors are printed
to the kernel log. If the last delsys was DVB-T/T2:
cxd2841er: i2c wr failed=-5 addr=6c reg=00 len=1
cxd2841er: i2c rd failed=-5 addr=6c reg=26
and if it was DVB-C:
cxd2841er: i2c wr failed=-5 addr=6c reg=00 len=1
cxd2841er: i2c rd failed=-5 addr=6c reg=49
This happens when read_status unconditionally calls into the
read_signal_strength() function which triggers the read_agc_gain_*()
functions, where these registered are polled.
This isn't a critical thing since when the demod is active again, no more
such errors are logged, however this might make users suspecting defects.
Fix this by requiring STATE_ACTIVE_* in priv->state. If it isn't in any
active state, additionally set the strength scale to NOT_AVAILABLE.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Value assigned to variable _type_ at line 678 is overwritten at line 688
before it can be used. This makes such variable assignment useless.
Remove this variable assignment and fix some coding style issues.
Addresses-Coverity-ID: 1226968
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The read_snr() functions currently do some magic to return relative scale
values when called. Split out register readouts into separate functions
so the functionality can be reused in some other way.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This adds the basics to stv0367ddb_read_status() to be able to properly
provide signal statistics in DVBv5 format. Also adds UCB readout and
provides those values. Also, don't return -EINVAL in ddb_read_status()
if active_demod_state indicates no delivery system.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Use dev_dbg() in conjunction with the %*ph format macro to print the vmon
status debug, thus hiding continuous hexdumping from default log levels.
Also, change the attach success log line from error to info severity.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Acked-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The semaphore 'i2c_switch_mutex' is used as a simple mutex, so
it should be written as one. Semaphores are going away in the future.
Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The semaphore 'stream_mutex' is used as a simple mutex, so
it should be written as one. Also moving the mutex_[lock/unlock]
to the caller as it is anyway locked at the beginning of the
callee thus avoiding repetition.
Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The semaphore 'cmd_mutex' is used as a simple mutex, so
it should be written as one. Also, replace down with
mutex_destroy to ensure sane state when ngene_stop is
called.
Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
As such macro will check if the expression is true, it may fall through, as
warned:
In file included from ./include/uapi/linux/stddef.h:1:0,
from ./include/linux/stddef.h:4,
from ./include/uapi/linux/posix_types.h:4,
from ./include/uapi/linux/types.h:13,
from ./include/linux/types.h:5,
from ./drivers/media/dvb-core/dvb_frontend.h:35,
from drivers/media/tuners/fc0011.h:4,
from drivers/media/tuners/fc0011.c:20:
drivers/media/tuners/fc0011.c: In function 'fc0011_set_params':
./include/linux/compiler.h:179:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
# define unlikely(x) __builtin_expect(!!(x), 0)
^~~~~~~~~~~~~~~~~~~~~~~~~~
./include/asm-generic/bug.h:109:2: note: in expansion of macro 'unlikely'
unlikely(__ret_warn_on); \
^~~~~~~~
drivers/media/tuners/fc0011.c:344:3: note: in expansion of macro 'WARN_ON'
WARN_ON(1);
^~~~~~~
drivers/media/tuners/fc0011.c:345:2: note: here
case 0:
^~~~
In file included from ./include/uapi/linux/stddef.h:1:0,
from ./include/linux/stddef.h:4,
from ./include/uapi/linux/posix_types.h:4,
from ./include/uapi/linux/types.h:13,
from ./include/linux/types.h:5,
from ./include/linux/list.h:4,
from ./include/linux/module.h:9,
from drivers/media/pci/tw5864/tw5864-video.c:17:
drivers/media/pci/tw5864/tw5864-video.c: In function 'tw5864_fmt_vid_cap':
./include/linux/compiler.h:179:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
# define unlikely(x) __builtin_expect(!!(x), 0)
^~~~~~~~~~~~~~~~~~~~~~~~~~
./include/asm-generic/bug.h:68:2: note: in expansion of macro 'unlikely'
unlikely(__ret_warn_on); \
^~~~~~~~
drivers/media/pci/tw5864/tw5864-video.c:547:3: note: in expansion of macro 'WARN_ON_ONCE'
WARN_ON_ONCE(1);
^~~~~~~~~~~~
drivers/media/pci/tw5864/tw5864-video.c:548:2: note: here
case STD_NTSC:
^~~~
On both cases, it means an error, so, let's return an error
code, to make gcc happy.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Michael Büsch <m@bues.ch>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
DRX_S9TOS16 and DRX_S24TODRXFREQ are simply not used. Furthermore,
sign_extend32() should be used for sign extension. (Also, the comment
describing DRX_S24TODRXFREQ was wrong). So remove these macros.
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The dmaengine driver for sDMA now have support for interleaved transfer.
This trasnfer type was open coded with the legacy omap-dma API, but now
we can move it to dmaengine.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
While committing a change on em28xx, I got a warning of a
typo there. So, fix it on em28xx and on two other media drivers
with the same typo.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
While testing support for Terratec H6 rev. 2, it was noticed
that reading from eeprom there causes a timeout error.
Apparently, this is due to the need of properly setting GPIOs.
In any case, the driver doesn't really require eeprom reading
to succeed, as this is currently used only for debug.
So, Ignore such errors.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Mostly this adds some unlocks to error paths. But, if you see where
there were "break;" statements before, I changed those paths to return
error codes instead of returning success.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch mostly adds unlocks to error paths. But one additional small
change is that I made the first "break;" a "goto unlock;" which means
that now we return failure instead of success on that path.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Values assigned to variables Fmax and Fmin at lines 2740 and 2741 are
overwritten at lines 2754 and 2755 before they can be used. This makes
such variable assignments useless.
Addresses-Coverity-ID: 1226952
Addresses-Coverity-ID: 1226953
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Side effect: KERN_DEBUG messages aren't written to the kernel log anymore.
This also improves the tda18212_ping reporting a bit so users know that if
pinging wasn't successful, bad things will happen.
Since in module_init_ddbridge() there's no dev yet, pr_info is used
instead.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Reported by smatch:
drivers/media/pci/ddbridge/ddbridge-core.c:1246 input_tasklet() warn: this loop depends on readl() succeeding
drivers/media/pci/ddbridge/ddbridge-core.c:1768 flashio() warn: this loop depends on readl() succeeding
drivers/media/pci/ddbridge/ddbridge-core.c:1788 flashio() warn: this loop depends on readl() succeeding
Fix this by introducing safe_ddbreadl() which will wrap ddbreadl and checks
for all bits set in the return which indicates failure, and return 0 in
that case. Usable as drop-in-replacement in all affected while loops w/o
having to change the logic.
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
I would have liked the the picture run timeout error handler to be renamed to
something a bit more descriptive in the original commit fb2be08f8c ("[media]
coda: first step at error recovery").
Somehow v1 [1] was merged instead of v2 [2].
[1] https://patchwork.kernel.org/patch/9663965/
[2] https://patchwork.kernel.org/patch/9774239/
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The current pre-decrement is incorrect and should be replaced
with a post-decrement. Consider the case where the very first
clk_prepare_enable fails when i is 0; in this case the error
clean up will decrement the unsigned int which wraps to the
largest unsigned int value causing an array out of bounds read
on core->clks[i].
Detected by CoverityScan, CID#1446590 ("Out-of-bounds read")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Check return value from call to core->write(), so in case of
error print error message, jump to goto label fail and eventually
return.
Addresses-Coverity-ID: 1226943
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Back in April I created a patch to address a false-positive warning:
drivers/media/usb/rainshadow-cec/rainshadow-cec.c: In function 'rain_irq_work_handler':
drivers/media/usb/rainshadow-cec/rainshadow-cec.c:171:31: error: 'data' may be used uninitialized in this function [-Werror=maybe-uninitialized]
My patch was totally wrong and introduced a real bug, and Colin Ian King thankfully
noticed it now and fixed my mistake. Unfortunately, fixing the actual uninitialized
data in this case brought back the original bogus warning.
This is a new version of the patch, which simplifies the code to the point where
gcc notices the behavior is correct.
Fixes: ca33784ba4 ("[media] rainshadow-cec: ensure exit_loop is intialized")
Fixes: ea6a69defd ("[media] rainshadow-cec: avoid -Wmaybe-uninitialized warning")
Cc: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Commit 680d87c0a9 ("[media] tuner-core: use pr_foo, instead of
internal printk macros") removed the use of PREFIX, remove the #define
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Convert STK_<LEVEL> to pr_<level> to use the typical kernel logging.
Add a define for pr_fmt. No change in logging output.
Miscellanea:
o Remove now unused PREFIX and STK_<LEVEL> macros
o Realign arguments
o Use pr_<level>_ratelimited
o Add a few missing newlines to formats
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This fixes a smatch warning:
drivers/media/platform/coda/coda-bit.c:415 coda_alloc_framebuffers()
error: we previously assumed 'ctx->codec' could be null (see line 396)
coda_alloc_framebuffers() is called from coda_start_encoding() and
__coda_start_decoding(). Both dereference ctx->codec before calling
coda_alloc_framebuffers() in lines 935 and 1649, so ctx->codec can not
be NULL.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This one got applied twice, causing a build error with clang:
drivers/media/i2c/et8ek8/et8ek8_driver.c:1499:1: error: redefinition of '__mod_of__et8ek8_of_table_device_table'
Fixes: 9ae05fd1e7 ("[media] et8ek8: Export OF device ID as module aliases")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Seven single characters (line breaks) should be put into a sequence.
Thus use the corresponding function "seq_putc".
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Drivers must not perform unbalanced calls to stop the entity pipeline,
however if they do they will fault in the core media code, as the
entity->pipe will be set as NULL. We handle this gracefully in the core
with a WARN for the developer.
Replace the erroneous check on zero streaming counts, with a check on
NULL pipe elements instead, as this is the symptom of unbalanced
media_pipeline_stop calls.
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pincharts@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The type field in struct v4l2_selection is supposed to never use the
_MPLANE variants. E.g. if the driver supports V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
then userspace should still pass V4L2_BUF_TYPE_VIDEO_CAPTURE.
The reasons for this are lost in the mists of time, but it is really
annoying. In addition, the exynos drivers didn't follow this rule and
instead expected the _MPLANE type.
To fix that code is added to the v4l2 core that maps the _MPLANE buffer
types to their regular equivalents before calling the driver.
Effectively this allows for userspace to use either _MPLANE or the regular
buffer type. This keeps backwards compatibility while making things easier
for userspace.
Since drivers now never see the _MPLANE buffer types the exynos drivers
had to be adapted as well.
Signed-off-by: Hans Verkuil <hansverk@cisco.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@s-opensource.com>
Implement scaler and integrated with the core
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Implement the debayer filter and integrate it with the core
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Change the core structure for adding subdevices in the topology.
Instead of calling the specific create function for each subdevice,
inject a child platform_device with the driver's name.
Each type of node in the topology (sensor, capture, debayer, scaler)
will register a platform_driver with the corresponding name through the
component subsystem.
Implementing a new subdevice type doesn't require vimc-core to be altered.
This facilitates future implementation of dynamic entities, where
hotpluging an entity in the topology is just a matter of
registering/unregistering a platform_device in the system.
It also facilitates other implementations of different nodes without
touching the core code and remove the need of a header file for each
type of node.
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Allow user space to change the image format as the frame size, the
pixel format, colorspace, quantization, field YCbCr encoding
and the transfer function
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Allow user space to change the image format as the frame size, the
media bus pixel format, colorspace, quantization, field YCbCr encoding
and the transfer function
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Colorimetry value will always be checked in the same way. Adding a
helper macro for that
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
All links will be checked in the same way. Adding a helper function for
that
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Move the vimc_cap_pipeline_s_stream from the vimc-cap.c to vimc-common.c
as this core will be reused by other subdevices to activate the stream
in their directly connected nodes
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
As all the subdevices in the topology will be initialized in the same
way, to avoid code repetition the vimc_ent_sd_{register, unregister}
helper functions were created
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Remove helper functions from vimc-core and add it in vimc-common to
clean up the core.
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Initialize the test pattern generator on the sensor
Generate a colored bar image instead of a grey one
Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Commit e789029761 ("i2c: sh_mobile: don't send a stop condition by
default inside transfers") makes the i2c_sh_mobile I2C-adapter emit a
stop/start sequence between messages in a single transfer only when
explicitly requested with I2C_M_STOP.
This breaks the ov772x driver in the SH4 Migo-R board as the Omnivision
sensor uses the I2C-like SCCB protocol that doesn't support repeated
starts:
i2c-sh_mobile i2c-sh_mobile.0: Transfer request timed out
ov772x 0-0021: Product ID error 92:92
Fix it by marking the client as SCCB, forcing the emission of a
stop/start sequence between all messages.
As I2C_M_STOP requires the I2C adapter to support protocol mangling,
ensure that the I2C_FUNC_PROTOCOL_MANGLING functionality is available.
Tested on SH4 Migo-R board, with OV772x now successfully probing
soc-camera-pdrv soc-camera-pdrv.0: Probing soc-camera-pdrv.0
ov772x 0-0021: ov7725 Product ID 77:21 Manufacturer ID 7f:a2
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
We want all media drivers to build with COMPILE_TEST, as the
Coverity instance we use on Kernel works only for x86. Also,
our test workflow relies on it, in order to identify git
bisect breakages.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Move power-up and power-down functionality to init/sleep ops and
get rid of old function.
Fixes and simplifies power-up functionality slightly.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
We need to wait 2nd demod power-up before download firmware. Move
that wait to more correct location.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
