There's no need to zero the buffer, as if the routine gets an error,
rc will be different than one.
That fixes the following warning:
	drivers/media/tuners/tda9887.c: In function 'tda9887_status':
	drivers/media/tuners/tda9887.c:539:2: warning: value computed is not used [-Wunused-value]
While here, make fix the CodingStyle on this function.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

This patch adds support to ST RC driver, which is basically a IR/UHF
receiver and transmitter. This IP (IRB) is common across all the ST
parts for settop box platforms. IRB is embedded in ST COMMS IP block.
It supports both Rx & Tx functionality.
This driver adds only Rx functionality via LIRC codec.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Acked-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

'of_match_ptr' is defined in linux/of.h. Include it explicitly to
avoid build breakage in the future.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

'of_match_ptr' is defined in linux/of.h. Include it explicitly to
avoid build breakage in the future.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

'of_match_ptr' is defined in linux/of.h. Include it explicitly to
avoid build breakage in the future.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

'of_match_ptr' is defined in linux/of.h. Include it explicitly to
avoid build breakage in the future.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

'of_match_ptr' is defined in linux/of.h. Include it explicitly to
avoid build breakage in the future.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

The helper function is defined by a macro that is erroneously called
with the compose rectangle instead of the crop rectangle. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Adds the driver for the LM3560, dual LED Flash The LM3560 has two 1A
constant current driver for high current white LEDs.

It is controlled via an I2C compatible interface(up to 400kHz).

Each flash brightness, torch  brightness and enable/disable can be
controlled independantly, but flash timeout and operation mode are shared.
Signed-off-by: Daniel Jeong <gshark.jeong@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Components are RTL2832P + R828D + MN88472.
Currently support only DVB-T as there is no driver for MN88472 demod.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

RTL2832P is version of RTL2832U with extra TS interface.
As for now, we support only integrated RTL2832 demod.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Use R820T config for R828D too as those are about same tuner.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Small changes in order to support tuner version R828D @ 16 MHz clock.
There was 'vco_fine_tune' check, which seems to adjust synthesizer
output divider (mixer dix / LO div / Rout) by one. R828D seems to
return vco_fine_tune=1 every time and that condition causes tuning
fail as output divider was increased by one.
Resolve problem by skipping whole condition in case of R828D tuner.
Just to mention, other tuner, R820T, seems to return 2 here.
Synthesizer maximum frequency check was hard coded to check synthesizer N
and thus worked correctly only for clock frequencies around 30 MHz.
As whole test is quite useless in any case, I removed it totally.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

v3.12-rc fails to build with this error:
drivers/media/i2c/ths8200.c:49:2: error: unknown field 'bt' specified in initializer
drivers/media/i2c/ths8200.c:50:3: error: field name not in record or union initializer
drivers/media/i2c/ths8200.c:50:3: error: (near initialization for 'ths8200_timings_cap.reserved')
drivers/media/i2c/ths8200.c:51:3: error: field name not in record or union initializer
drivers/media/i2c/ths8200.c:51:3: error: (near initialization for 'ths8200_timings_cap.reserved')
...
with gcc 4.5.4.  This error was not detected in builds prior to v3.12-rc.
This patch fixes this.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: stable@vger.kernel.org # For kernel v3.12
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

This patch adds support for the UB435-Q V2. You might need to
use the device once with the Windows driver provided by KWorld
in order to permanently reprogram the device descriptors. Thanks
to Jarod Wilson for the initial attempt at adding support for this
device.

[m.chehab@samsung.com: Fixed Whitespace mangling, Coding Style and
 improved the error handling at DVB attach]
Signed-off-by: Jean-Francois Thibert <jfthibert@google.com>
Reviewed-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Fix build error when VIDEOBUF2_CORE=m and USB_MSI3101=y.
drivers/built-in.o: In function `msi3101_buf_queue':
sdr-msi3101.c:(.text+0x1298d6): undefined reference to `vb2_buffer_done'
drivers/built-in.o: In function `msi3101_cleanup_queued_bufs':
sdr-msi3101.c:(.text+0x1299c7): undefined reference to `vb2_buffer_done'
drivers/built-in.o: In function `msi3101_isoc_handler':
sdr-msi3101.c:(.text+0x12a08d): undefined reference to `vb2_plane_vaddr'
sdr-msi3101.c:(.text+0x12a0b9): undefined reference to `vb2_buffer_done'
drivers/built-in.o: In function `msi3101_probe':
sdr-msi3101.c:(.text+0x12a1c5): undefined reference to `vb2_vmalloc_memops'
sdr-msi3101.c:(.text+0x12a1d7): undefined reference to `vb2_queue_init'
drivers/built-in.o:(.rodata+0x34cf0): undefined reference to `vb2_ioctl_reqbufs'
drivers/built-in.o:(.rodata+0x34cf4): undefined reference to `vb2_ioctl_querybuf'
drivers/built-in.o:(.rodata+0x34cf8): undefined reference to `vb2_ioctl_qbuf'
drivers/built-in.o:(.rodata+0x34d00): undefined reference to `vb2_ioctl_dqbuf'
drivers/built-in.o:(.rodata+0x34d04): undefined reference to `vb2_ioctl_create_bufs'
drivers/built-in.o:(.rodata+0x34d08): undefined reference to `vb2_ioctl_prepare_buf'
drivers/built-in.o:(.rodata+0x34d18): undefined reference to `vb2_ioctl_streamon'
drivers/built-in.o:(.rodata+0x34d1c): undefined reference to `vb2_ioctl_streamoff'
drivers/built-in.o:(.rodata+0x35580): undefined reference to `vb2_fop_read'
drivers/built-in.o:(.rodata+0x35588): undefined reference to `vb2_fop_poll'
drivers/built-in.o:(.rodata+0x35598): undefined reference to `vb2_fop_mmap'
drivers/built-in.o:(.rodata+0x355a0): undefined reference to `vb2_fop_release'
drivers/built-in.o:(.data+0x23b40): undefined reference to `vb2_ops_wait_prepare'
drivers/built-in.o:(.data+0x23b44): undefined reference to `vb2_ops_wait_finish'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Casting the return value which is a void pointer is redundant.
The conversion from void pointer to any other pointer type is
guaranteed by the C programming language.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Casting the return value which is a void pointer is redundant.
The conversion from void pointer to any other pointer type is
guaranteed by the C programming language.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

i2c_adap is a field of a struct and will always be allocated so
its address will never be null.
Suggested by coccinelle, manually verified.
Signed-off-by: Alexandru Juncu <alexj@rosedu.org>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

This patch proposes to remove the use of the IRQF_DISABLED flag
It's a NOOP since 2.6.35 and it will be removed one day.
Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

The em28xx driver only calls subdevices' .s_power() method to power them
down, relying on the hardware to wake up automatically, which is usually
the case with tuners. This was acceptable with the old .standby() method,
but is wrong with .s_power(). Fixing the driver would be difficult due to
a broad supported hardware base. Instead this patch makes use of the
unbalanced_power soc-camera subdevice flag to tell the ov2640 driver to
balance calls to v4l2_clk_enable() and v4l2_clk_disable() internally.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Some non soc-camera drivers, e.g. em28xx, use subdevice drivers, originally
written for soc-camera, which use soc_camera_power_on() and
soc_camera_power_off() helpers to implement their .s_power() methods. Those
helpers in turn can enable and disable a clock, if it is supplied to them
as a parameter. This works well when camera host drivers balance their
calls to subdevices' .s_power() methods. However, some such drivers fail to
do that, which leads to unbalanced calls to v4l2_clk_enable() /
v4l2_clk_disable(), which then in turn produce kernel warnings. Such
behaviour is wrong and should be fixed, however, sometimes it is difficult,
because some of those drivers are rather old and use lots of subdevices,
which all should be tested after such a fix. To support such drivers this
patch adds a work-around, allowing host drivers or platforms to set a flag,
in which case soc-camera helpers will only enable the clock, if it is
disabled, and disable it only once on the first call to .s_power(0).
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Camera sensors usually require a master clock for data sampling. This patch
registers such a clock source for em28xx cameras. This fixes the currently
broken em28xx ov2640 camera support and can also be used by other camera
sensors.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

To obtain a clock reference consumers supply their device object to the
V4L2 clock framework. The latter then uses the consumer device name to
find a matching clock. For that to work V4L2 clock providers have to
provide the same device name, when registering clocks. This patch adds
a helper macro to generate a suitable device name for I2C devices.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Many bridges and video host controllers supply fixed rate always on clocks
to their I2C devices. This patch adds two simple helpers to register and
unregister such a clock.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

This prepares soc-camera to use struct v4l2_subdev_platform_data for its
subdevice-facing API, which would allow subdevice driver re-use.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

This struct shall be used by subdevice drivers to pass per-subdevice data,
e.g. power supplies, to generic V4L2 methods, at the same time allowing
optional host-specific extensions via the host_priv pointer. To avoid
having to pass two pointers to those methods, add a pointer to this new
struct to struct v4l2_subdev.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

If v4l2_async_register_subdev() fails, don't skip the clean up.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

BUG*() and WARN*() macros specify their conditions as unlikely, using
BUG_ON(unlikely(condition)) is redundant, remove it.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

This patch proposes to remove the use of the IRQF_DISABLED flag
It's a NOOP since 2.6.35 and it will be removed one day.
Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

If a frame is still decoding when system enters suspend mode, we wait
on the device queue for a interrupt condition. This sometimes leads to a
timeout because the device queue might not be woken up everytime.
Usually, the context queue gets woken up when that context's frame gets
decoded. This patch adds a condition to wake up the device queue along
with the context queue when the system is in suspend mode.
Since the device queue is now woken up, we don't have to check the
context's int_cond flag while waiting. Also, we can skip calling try_run
after waking up the device queue to ensure that we don't have to wait
for more than one frame to be processed.
Signed-off-by: Prathyush K <prathyush.k@samsung.com>
Signed-off-by: Arun Mankuzhi <arun.m@samsung.com>
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

The patch sets the default values of MAX_QP and GOP size encoder
parameters to some firmware recommended default values. This enables
the applications to get a better encoded output using the default
settings itself.
Signed-off-by: Kiran AVND <avnd.kiran@samsung.com>
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Running the coda driver without CONFIG_SRAM selected leads to the following
probe error:
coda 63ff4000.vpu: iram pool not available
coda: probe of 63ff4000.vpu failed with error -12
In order to avoid it, select CONFIG_SRAM inside VIDEO_CODA.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

If unused, the pixel format priv field has to be cleared by the driver
in try_fmt.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Implement try_decoder_cmd to let userspace determine available commands
and flags.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

This patch fixes the v4l2-compliance "TRY_FMT(G_FMT) != G_FMT" issue.
The driver now overwrites invalid formats with the current setting, using
coda_get_max_dimensions to find device specific max width/height.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Moving the ioctl handler callbacks into the coda namespace helps
tremendously to make sense of backtraces.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
[k.debski@samsung.com: fix whitespace error near coda_subscribe_event]
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Instead of copying v4l2_buf.flags from the source buffer, set
the destination buffer flags as reported by the hardware codec.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

Use the product name (currently CodaDx6 or CODA7541)
to fill the v4l2_capabilities.name field.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>