Use the ACCESS_ONCE macro for both accesses to idle->sequence in the
loops to calculate the idle time. If only one access uses the macro,
the compiler is free to cache the value for the second access which
can cause endless loops.
Cc: stable@vger.kernel.org # 3.6+
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The get_tod_clock_ext inline assembly does not specify its output
operands correctly. This can cause incorrect code to be generated.
Cc: stable@vger.kernel.org # 3.12
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.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>
Expose the buffer objects, syncpoint and channel functionality in the
public public header so that drivers can use them.
Signed-off-by: Thierry Reding <treding@nvidia.com>
This structure derives from host1x_client. DRM-specific fields are moved
from host1x_client to this structure, so that host1x_client can remain
agnostic of DRM.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Rename the host1x_to_drm_bo() macro to host1x_to_tegra_bo() for
consistency and fixup various stylistic issues.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Other drivers use the tegra- prefix in their names, so add it to this
driver's name as well for consistency.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Rework the address table code for the host1x firewall. The previous
implementation allocated a bitfield but didn't check for a valid pointer
so it could potentially crash. Instead, embed a static bitmap within the
gr2d structure to avoid the allocation and use the Linux bitmap API to
reduce code complexity.
Don't annotate the driver's .remove() function __exit. Even if built in
the driver can be unloaded via sysfs, so .remove() needs to stick around
after initialization. Also remove the explicit initialization of the
driver's .owner field to THIS_MODULE because that's now handled by the
driver core.
Furthermore make an error message more consistent with other subdrivers,
index the syncpts array for better readability, remove a gratuituous
newline and reorder some variable declarations to make the code easier
to read.
Signed-off-by: Thierry Reding <treding@nvidia.com>
The same code sequence is used in various places to validate a register
access in the command stream. This can be refactored into a separate
function.
Signed-off-by: Thierry Reding <treding@nvidia.com>
The value stored in this field is a pointer to a command buffer, not an
ID. Avoid some confusion by reflecting that in the field's name.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Arguments on subsequent lines should be aligned with the first argument.
This one occurrence went unnoticed during code review.
Signed-off-by: Thierry Reding <treding@nvidia.com>
The device can be unbound from the driver via sysfs, so regardless of
whether the driver is builtin or a module, its .remove() function needs
to stick around.
Signed-off-by: Thierry Reding <treding@nvidia.com>
The structure represents a context associated with a particular process
that has opened the Tegra DRM device and requested a channel. This is a
very DRM-specific notion and has nothing to do with host1x. Rename the
structure to more clearly mark the boundaries between the two.
Signed-off-by: Thierry Reding <treding@nvidia.com>
This structure extends drm_file with Tegra DRM specific fields and has
nothing to do with host1x. Rename the structure to more clearly mark the
boundaries between host1x and Tegra DRM.
While at it, move the structure definition out of the header. It's never
used outside of the drm.c source file, so it can be defined within that.
Signed-off-by: Thierry Reding <treding@nvidia.com>
The host1x and Tegra DRM drivers are currently tightly coupled. Renaming
the structure marks the boundary more clearly.
Signed-off-by: Thierry Reding <treding@nvidia.com>
The num_relocs count are passed to the kernel per job, not per gather.
For multi-gather jobs, we would previously fail if there were relocs in
other gathers aside from the first one.
Fix this by simply moving the check until all gathers have been
consumed.
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>
Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Fix a typo (iotcl -> ioctl) in the debug message when an unknown IOCTL
is encountered.
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Thierry Reding <treding@nvidia.com>
When userspace removes the active framebuffer using DRM_IOCTL_MODE_RMFB,
or explicitly disables the CRTC (by calling drmModeSetCrtc(..., NULL)
for example), a NULL framebuffer will be passed to the .set_config()
implementation of a CRTC. The drm_crtc_helper_set_config() helper will
decide to disable a CRTC when that happens.
To do so, it calls drm_crtc_helper_disable(), which in turn will iterate
over all encoders and decouple them from their connectors and finally
call drm_helper_disable_unused_functions() to clean up and call the
.disable() or .dpms() implementation for each encoder. However, at no
point during this sequence does it track the DPMS mode of a connector,
so it will usually remain on after this.
When a connector is enabled again, drm_helper_connector_dpms() will not
notice that the DPMS mode actually changed and won't do anything, which
causes the connector to stay disabled indefinitely.
To prevent this from happening, explicitly set the connector's DPMS mode
to off when the CRTC is disabled. That way it reflects the correct state
and can be enabled again.
This solves an issue observed when terminating an X server running on
the xf86-video-modesetting driver. Without this patch, the connector
would not be enabled properly and the screen would stay dark.
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Thierry Reding <treding@nvidia.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>
Get rid of unnecessary (void *) casting in 'cypress_init' function.
Signed-off-by: Geyslan G. Bem <geyslan@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This patch adds support for touchpad found on Dell XT2. It's a dual device
with device ID: 73, 00, 14, that comply with "ALPS_PROTO_V2".
Signed-off-by: Yunkang Tang <yunkang.tang@cn.alps.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.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>
Previously, f2fs_sync_file() waits for all the node blocks to be written.
But, we don't need to do that, but wait only the inode-related node blocks.
This patch adds wait_on_node_pages_writeback() in which waits inode-related
node blocks that are on writeback.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@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>
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>
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>
Just a few small fixes for radeon (audio regression fix,
stability fix, and an endian bug noticed by coverity).
* 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon/dpm: fix incompatible casting on big endian
drm/radeon: disable bapm on KB
drm/radeon: use sw CTS/N values for audio on DCE4+
commit b6069a9570 (filter: add MOD operation) added generic
support for modulus operation in BPF.
This patch brings JIT support for PPC64
Signed-off-by: Vladimir Murzin <murzin.v@gmail.com>
Acked-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Currently DIVWU stands for *signed* divw opcode:
7d 2a 4b 96 divwu r9,r10,r9
7d 2a 4b d6 divw r9,r10,r9
Use the *unsigned* divw opcode for DIVWU.
Suggested-by: Vassili Karpov <av1474@comtv.ru>
Reviewed-by: Vassili Karpov <av1474@comtv.ru>
Signed-off-by: Vladimir Murzin <murzin.v@gmail.com>
Acked-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
