When we soft-CPU hotplug a CPU, we reset the stack pointer and
jump back to start_secondary(). This allows us to restart as if
the CPU was actually reset.
However, we weren't resetting the frame pointer, which could cause
problems with backtracing. Reset the frame pointer to zero (which
means no parent frame) just like the early assembly code also does.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
There are 2 versions of the timrot on Freescale MXS-based SoCs.
The v1 on MX23 only gets 16 bits counter, while v2 on MX28
extends the counter to 32 bits.
The implementation uses two timers, one for clock_event and
another for clocksource. MX28 uses timrot 0 and 1, while MX23
uses 0 and 2.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
- DEBUG_LL support, which is incompatible with multi-soc MXS image
because of different DUART base address on MX23 and MX28
- uncompress message support
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Its possible for the call to read rx timeout from the hardware to fail,
in which case we end up with a bogus rx timeout value. Set a default one
when filling in the rc struct, and we'll just overwrite it later w/the
value from hardware, but if that read fails, we've at least got a sane
rx timeout value to work with (1000ms is the default value I've seen
returned on most if not all mceusb hardware).
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
As it turns out, somewhere along the way, we managed to invert the
meaning of the tx_mask_inverted flag. Looking back over the old lirc
driver, tx_mask_inverted was set to 0 if the device was in tx_mask_list.
Now we have a tx_mask_inverted flag set to 1 for all the devices that
were in the list, and set tx_mask_inverted to that flag value, which is
actually the opposite of what we used to set, causing set_tx_mask to use
the wrong mask setting option. Since there seem to be more devices with
inverted masks than not (using the original device as the baseline for
inverted vs. normal), lets just call the ones currently marked as
inverted normal instead, and flip the if/else actions that key off of
the inverted flag.
Note: the problem only cropped up if a call to set_tx_mask was made, if
no mask was set, the device would work just fine, which is why this
managed to slip though w/o getting noticed until now.
Tested successfully by myself and Dennis Gilmore.
Reported-by: Dennis Gilmore <dgilmore@redhat.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This makes several changes but they're in one function and sort of
related:
"buf" was leaked on error. The leak if we try to read an invalid
length is the main concern because it could be triggered over and
over.
If the copy_to_user() failed, then the original code returned the
number of bytes remaining. read() is supposed to be the opposite way,
where we return the number of bytes copied. I changed it to just return
-EFAULT on errors.
Also I changed the debug output from "-EFAULT" to just "<fail>" because
it isn't -EFAULT necessarily. And since we go though that path if the
length is invalid now, there was another debug print that I removed.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
We shouldn't unlock here. I think this was a cut and paste error.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
When trying to create persistent device names for mceusb and streamzap
devices, I noticed that their respective drivers are not creating the rc
device as a child of the USB device. Rather it creates it as virtual
device. As a result, udev cannot use the USB device information to
create persistent device names for event and lirc devices associated
with the rc device. Not having persistent device names makes it more
difficult to make use of the devices in userspace as their names can
change.
Signed-off-by: Paul Bender <pebender@gmail.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
There are cases where we get an ending space, and our trailing timeout
space then gets sent right after it, which breaks repeat, at least for
lirc userspace decoding. Merge the two spaces by way of using
ir_raw_event_store_filter, set a timeout value, and we're back to good.
Successfully tested with streamzap and windows mce remotes.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Something I failed to notice while testing the mceusb RLE buffer
decoding simplification patches was that we were getting an extra event
from the previously pressed key.
As was pointed out to me on irc by Maxim, this is actually due to using
ir_raw_event_store_with_filter without having set up a timeout value.
The hardware has a timeout value we're now reading and storing, which
properly enables the transition to idle in the raw event storage
process, and makes IR decode behave correctly w/o keybounce.
Also remove no-longer-used ir_raw_event struct from mceusb_dev struct
and add as-yet-unused enable flags for carrier reports and learning
mode, which I'll hopefully start wiring up sooner than later. While
looking into that, found evidence that 0x9f 0x15 responses are only
non-zero when the short-range learning sensor is used, so correct the
debug spew message, and then suppress it when using the standard
long-range sensor.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
If we pass in an offset, we shouldn't skip 2 bytes. And the first-gen
hardware generates a constant stream of interrupts, always with two
header bytes, and if there's been no IR, with nothing else. Bail from
ir processing without calling ir_handle_raw_event when we get such a
buffer delivered to us.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
We were storing a bunch of spaces at the end of each signal, rather than
a single long space. The in-kernel decoders were actually okay with
this, but lirc isn't. As suggested by David Härdeman, switch to storing
samples using ir_raw_event_store_with_filter, which auto-merges the
consecutive space samples for us. This also allows us to bypass having
to store rawir samples in our device struct, further simplifying the
buffer parsing state machine. Both in-kernel decoders and lirc are happy
again with this change.
Also included in this patch is proper parsing of 0x9f 0x01 commands, the
removal of some magic number usage and some printk spew fixups.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Rather than waiting for trigger bits, the formula for which was slightly
messy, and apparently, not actually 100% complete for some remotes, just
call ir_raw_event_handle whenever we finish parsing a chunk of data from
the rx fifo, similar to mceusb, as well as whenever we see an 'end of
signal data' 0x80 packet.
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Another multi-function Conexant device. Interface 0 is IR, though on
this model, TX isn't wired up at all, so I've mixed in support for
models without TX (and verified that lircd says TX isn't supported when
trying to send w/this device).
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
FIMC IP in S5Pv310 series has extended DMA status registers
and some bit fields are marked as reserved comparing to S5PC100/110.
Use correct registers for getting DMA write pointer in each SoC variant
supported by the driver.
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>
Replace V4L2_PIX_FMT_RGB24 code with V4L2_PIX_FMT_RGB32
since the hardware uses 24-bits for actual pixel data but pixels
are 4-byte aligned in memory.
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>
Create separate vidioc_g_crop/vidioc_s_crop handlers for capture
video node and so image cropping parameters are properly queried
at FIMC input (image sensor) and not at FIMC output.
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>
The test for driver->owner != NULL in sh_mobile_ceu_camera.c is unneeded and it
breaks the static build of sh_mobile_csi2.c. Remove it.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
When SOCAM_PCLK_SAMPLE_FALLING, just leave CSICR1_REDGE unset, otherwise we get
the inverted behaviour.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This removes the '+1' in vsync timing calculation for wm8505fb to
directly use values provided from the board setup code.
Signed-off-by: Alexey Charkov <alchark@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This replaces the last remaining driver name reference with the
macro for uniformity in wm8505fb.
In addition, the error return path in wmt_ge_rops.c is made more
uniform by getting rid of goto's in remaining places.
Signed-off-by: Alexey Charkov <alchark@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Silence warnings such as -
drivers/video/s1d13xxxfb.c:421: warning: ‘bltbit_wait_bitset’ defined but not used
Just drop the unused code.
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch adds support for runtime pm using the functions.
- pm_runtime_get_sync()
- pm_runtime_put_sync()
pm_runtime_get_sync() and pm_runtime_put_sync() are called when
open or release function of framebufer driver is called to inform
the system if hardware is idle or not.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Increase NR_IRQS from 512 to 1024 on SH-Mobile ARM.
Needed to support vectors in the sh73a0 INTCS block.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Use PAGE_OFFSET and PHYS_OFFSET for secondary_startup
entry point as recommended by Russell King.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The new FPGA firmware in Balloon3 uses different methods to control it's bus
control lines. In the new version, there are separate registers to set/clear
bus control lines. This patch updates affected places.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
smp.c is becoming too large, so split out the TLB maintainence
broadcasting into a separate smp_tlb.c file.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
When a CPU is hot unplugged, the generic tick code cleans up the
clock event device, but fails to call down to the device's set_mode
function to actually shut the device down.
To work around this, we've historically had a local_timer_stop()
callback out of the hotplug code. However, this adds needless
complexity when we have the clock event device itself available.
Explicitly call the clock event device's set_mode function with
CLOCK_EVT_MODE_UNUSED, so that the hardware can be cleanly shutdown
without any special external callbacks. When/if the generic code
is fixed, percpu_timer_stop() can be killed off.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The original scheme for reporting spurious wakeups was broken - it
tried to use printk() from a context which wasn't coherent with the
other CPUs, which risks corrupting the printk() data.
Fix this by noting the number spurious wakeups, and only report them
when we are properly woken - when we will be coherent with the rest
of the system.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
We used to print a bland error message which gave no clue as to the
failure when we failed to bring up a secondary CPU. Resolve this by
separating the two failure cases.
If boot_secondary() fails, we print a message indicating the returned
error code from boot_secondary():
"CPU%u: failed to boot: %d\n", cpu, ret.
However, if boot_secondary() succeeded, but the CPU did not appear to
mark itself online within the timeout, indicate that it failed to come
online:
"CPU%u: failed to come online\n", cpu
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
