13 Nov, 2014
3 commits
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Signed-off-by: Devin Ryles
Reviewed-by: Jean Delvare
Signed-off-by: Wolfram Sang -
No user needs magic hex values, makes this debug output. Add DMA info.
Signed-off-by: Wolfram Sang
Signed-off-by: Wolfram Sang -
Make it possible to transfer i2c message buffers via DMA.
Start/Stop/Sending_Slave_Address is still handled using the old state
machine, it is sending the actual data that is done via DMA. This is
least intrusive and allows us to work with the message buffers directly
instead of preparing a custom buffer which involves copying the data
around.Signed-off-by: Wolfram Sang
[wsa: fixed an uninitialized var problem]
Signed-off-by: Wolfram Sang
12 Nov, 2014
7 commits
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Improves readability and reduces chances of duplicates.
Signed-off-by: Wolfram Sang
Signed-off-by: Wolfram Sang -
Amend the at91 i2c pin controller to set the state of the pins to:
- "default" on resume.
- "sleep" on suspend().This should make it possible to optimize energy usage for the pins
both for the suspend/resume cycleSigned-off-by: Wenyou Yang
Signed-off-by: Wolfram Sang -
This patch enforces correct I2C error returned codes from Freescale's
MPC i2c bus driver, allowing for proper user-space/kernel error
handling.Signed-off-by: Danielle Costantino
Signed-off-by: Wolfram Sang -
Don't log the host status register value in i801_isr(), it has very
little value and fills up the log when debugging is enabled.Signed-off-by: Jean Delvare
Signed-off-by: Wolfram Sang -
There is a control bit in the PCI configuration space which disables
interrupts. If this bit is set, the driver should not try to make use
of interrupts, it won't receive any.Signed-off-by: Jean Delvare
Signed-off-by: Wolfram Sang -
The i2c-i801 driver can work without interrupts, so there is no reason
to make a request_irq failure fatal. Instead we can simply fallback
to polling.Signed-off-by: Jean Delvare
Signed-off-by: Wolfram Sang -
Some systems have been reported to have trouble with interrupts. Use
wait_event_timeout() instead of wait_event() so we don't get stuck in
that case, and log the problem.Signed-off-by: Jean Delvare
Signed-off-by: Wolfram Sang
10 Nov, 2014
19 commits
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As show in I2C specification:
- Standard-mode: the minimum HIGH period of the scl clock is 4.0us
the minimum LOW period of the scl clock is 4.7us
- Fast-mode: the minimum HIGH period of the scl clock is 0.6us
the minimum LOW period of the scl clock is 1.3usI have measured i2c SCL waveforms in fast-mode by oscilloscope
on rk3288-pinky board. the LOW period of the scl clock is 1.3us.
It is so critical that we must adjust LOW division to increase
the LOW period of the scl clock.Thanks Doug for the suggestion about division formulas.
Signed-off-by: Addy Ke
Tested-by: Heiko Stuebner
Reviewed-by: Doug Anderson
Reviewed-by: Max Schwarz
Signed-off-by: Wolfram Sang -
When a signal is caught while the i2c-davinci bus driver is
transferring, the driver just "abandons" the transfer and leaves the
controller to fend for itself. The next I2C transaction will find the
controller in an undefined state and often results in a stream of
"initiating i2c bus recovery" messages until the controller arrives in a
defined state. This behaviour also sends out "half" or possibly even
mixed messages to I2C client devices which may put them in an undesired
state as well. So, let's get simply uninterruptible.Signed-off-by: Mike Looijmans
Signed-off-by: Wolfram Sang -
Signed-off-by: Wenyou Yang
Acked-by: Ludovic Desroches
Signed-off-by: Wolfram Sang -
Drivers should put the device into low power states proactively whenever the
device is not in use. Thus implement support for runtime PM and use the
autosuspend feature to make sure that we can still perform well in case we see
lots of i2c traffic within short period of time.Signed-off-by: Wenyou Yang
Acked-by: Ludovic Desroches
Signed-off-by: Wolfram Sang -
Signed-off-by: Wolfram Sang
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I2C clients instantiated from OF get their IRQ mapped at device
registration time. This leads to the IRQ being silently ignored if the
related irqchip hasn't been proved yet.Fix this by moving IRQ mapping at probe time using of_get_irq(). The
function operates as irq_of_parse_and_map() but additionally returns
-EPROBE_DEFER if the irqchip isn't available, allowing us to defer I2C
client probing.Signed-off-by: Laurent Pinchart
Signed-off-by: Wolfram Sang -
The function will be used by the I2C core which can be compiled as a
module.Signed-off-by: Laurent Pinchart
Acked-by: Rob Herring
Acked-by: Grant Likely
Signed-off-by: Wolfram Sang -
Add support for r8a73a4 (R-Mobile APE6) and sh73a0 (SH-Mobile AG5).
On these SoCs, the operating clock runs faster that on previous SoCs,
and the internal SCL clock counter gets incremented every 2 clocks of
the operating clock, just like on R-Car Gen2.Cfr. the "/2" in the calculation of ICCL/ICCH in section "I2C Bus
Interface (IIC)", subsection "Transfer Rate" of the datasheets.Signed-off-by: Geert Uytterhoeven
Signed-off-by: Wolfram Sang -
Explicitly list the various SoC-specific compatible properties.
This allows checkpatch to validate DTSes.Signed-off-by: Geert Uytterhoeven
Acked-by: Simon Horman
Signed-off-by: Wolfram Sang -
According to Documentation/CodingStyle - Chapter 14:
"The preferred form for passing a size of a struct is the following:
p = kmalloc(sizeof(*p), ...);
The alternative form where struct name is spelled out hurts readability and
introduces an opportunity for a bug when the pointer variable type is changed
but the corresponding sizeof that is passed to a memory allocator is not."So do it as recommeded.
Signed-off-by: Fabio Estevam
Signed-off-by: Wolfram Sang -
Pull arm64 fixes from Catalin Marinas:
- enable bpf syscall for compat
- cpu_suspend fix when checking the idle state type
- defconfig update* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: defconfig: update defconfig for 3.18
arm64: compat: Enable bpf syscall
arm64: psci: fix cpu_suspend to check idle state type for index -
Pull ARM SoC fixes from Olof Johansson:
"Another quiet week:- a fix to silence edma probe error on non-supported platforms from
Arnd
- a fix to enable the PL clock for Parallella, to make mainline
usable with the SDK.
- a somewhat verbose fix for the PLL clock tree on VF610
- enabling of SD/MMC on one of the VF610-based boards (for testing)
- a fix for i.MX where CONFIG_SPI used to be implicitly enabled and
now needs to be added to the defconfig instead
- another maintainer added for bcm2835: Lee Jones"* tag 'armsoc-for-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: dts: zynq: Enable PL clocks for Parallella
dma: edma: move device registration to platform code
ARM: dts: vf610: add SD node to cosmic dts
MAINTAINERS: update bcm2835 entry
ARM: imx: Fix the removal of CONFIG_SPI option
ARM: imx: clk-vf610: define PLL's clock tree -
Pull devicetree bugfix from Grant Likely:
"One buffer overflow bug that shouldn't be left around"* 'devicetree/merge' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux:
of: Fix overflow bug in string property parsing functions -
Pull btrfs fix from Chris Mason:
"It's a one liner for an error cleanup path that leads to crashes"* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanup -
Pull driver core fixes from Greg KH:
"Here are 3 tiny fixes for 3.18-rc4.One fixes up a long-stading race condition in the driver core for
removing directories in /sys/devices/virtual/ and the other 2 fix up
the wording of a new Kconfig option that was added in 3.18-rc1"* tag 'driver-core-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
tiny: rename ENABLE_DEV_COREDUMP to ALLOW_DEV_COREDUMP
tiny: reverse logic for DISABLE_DEV_COREDUMP
sysfs: driver core: Fix glue dir race condition by gdp_mutex -
Pull staging driver fixes from Greg KH:
"Here are some staging/iio fixes for 3.18-rc4.Nothing major, just a few bugfixes of things that have been reported"
* tag 'staging-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging:iio:ade7758: Remove "raw" from channel name
staging:iio:ade7758: Fix check if channels are enabled in prenable
staging:iio:ade7758: Fix NULL pointer deref when enabling buffer
iio: as3935: allocate correct iio_device size
io: accel: kxcjk-1013: Fix iio_event_spec direction
iio: tsl4531: Fix compiler error when CONFIG_PM_OPS is not defined
iio: adc: mxs-lradc: Disable the clock on probe failure
iio: st_sensors: Fix buffer copy
staging:iio:ad5933: Drop "raw" from channel names
staging:iio:ad5933: Fix NULL pointer deref when enabling buffer -
Pull tty/serial fixes from Greg KH:
"Here are some tiny serial/tty fixes for 3.18-rc4 that resolve some
reported issues"* tag 'tty-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: Fix pty master poll() after slave closes v2
serial: of-serial: fix uninitialized kmalloc variable
tty/vt: don't set font mappings on vc not supporting this
tty: serial: 8250_mtk: Fix quot calculation
tty: Prevent "read/write wait queue active!" log flooding
tty: Fix high cpu load if tty is unreleaseable
serial: Fix divide-by-zero fault in uart_get_divisor() -
Pull USB fixes from Greg KH:
"Here are some USB fixes for 3.18-rc4.Just a bunch of little fixes resolving reported issues and new device
ids for existing drivers. Full details are in the shortlog"* tag 'usb-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (26 commits)
USB: Update default usb-storage delay_use value in kernel-parameters.txt
USB: cdc-acm: add quirk for control-line state requests
phy: omap-usb2: Enable runtime PM of omap-usb2 phy properly
USB: storage: Fix timeout in usb_stor_euscsi_init() and usb_stor_huawei_e220_init()
USB: cdc-acm: only raise DTR on transitions from B0
Revert "storage: Replace magic number with define in usb_stor_euscsi_init()"
usb: core: notify disconnection when core detects disconnect
usb: core: need to call usb_phy_notify_connect after device setup
uas: Add US_FL_NO_ATA_1X quirk for 2 more Seagate models
xhci: no switching back on non-ULT Haswell
USB: quirks: enable device-qualifier quirk for yet another Elan touchscreen
USB: quirks: enable device-qualifier quirk for another Elan touchscreen
MAINTAINERS: Remove duplicate entry for usbip driver
usb: storage: fix build warnings !CONFIG_PM
usb: Remove references to non-existent PLAT_S5P symbol
uas: Add NO_ATA_1X for VIA VL711 devices
xhci: Disable streams on Asmedia 1042 xhci controllers
USB: HWA: fix a warning message
uas: Add US_FL_NO_ATA_1X quirk for 1 more Seagate model
usb-storage: handle a skipped data phase
...
09 Nov, 2014
4 commits
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The Parallella board comes with a U-Boot bootloader that loads one of
two predefined FPGA bitstreams before booting the kernel. Both define an
AXI interface to the on-board Epiphany processor.Enable clocks FCLK0..FCLK3 for the Programmable Logic by default.
Otherwise accessing, e.g., the ESYSRESET register freezes the board,
as seen with the Epiphany SDK tools e-reset and e-hw-rev, using /dev/mem.Cc: # 3.17.x
Signed-off-by: Andreas Färber
Acked-by: Michal Simek
Signed-off-by: Olof Johansson -
Pull i2c bugfixes from Wolfram Sang:
"One bigger cleanup (FSF address removal) and two bugfixes for I2C"* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: core: Dispose OF IRQ mapping at client removal time
i2c: at91: don't account as iowait
i2c: remove FSF address -
Pull irq fixes from Thomas Gleixner:
"Two fixlets for the armada SoC interrupt controller"* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: armada-370-xp: Fix MPIC interrupt handling
irqchip: armada-370-xp: Fix MSI interrupt handling -
Pull media fixes from Mauro Carvalho Chehab:
"For:
- some regression fixes at the Remote Controller core and imon driver
- a build fix for certain randconfigs with ir-hix5hd2
- don't feed power to satellite system at ds3000 driver initIt also contains some fixes for drivers added for Kernel 3.18:
- some fixes at the new ISDB-S driver, and the corresponding bits to
fix some descriptors for this Japanese TV standard at the DVB core
- two warning cleanups for sp2 driver if PM is disabled
- change the default mode for the new vivid driver"* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] sp2: sp2_init() can be static
[media] dvb:tc90522: fix always-false expression
[media] dvb-core: set default properties of ISDB-S
[media] dvb:tc90522: fix stats report
[media] vivid: default to single planar device instances
[media] imon: fix other RC type protocol support
[media] ir-hix5hd2 fix build warning
[media] ds3000: fix LNB supply voltage on Tevii S480 on initialization
[media] rc5-decoder: BZ#85721: Fix RC5-SZ decoding
[media] rc-core: fix protocol_change regression in ir_raw_event_register
08 Nov, 2014
7 commits
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Pull MIPS updates from Ralf Baechle:
"This weeks' round of MIPS bug fixes for 3.18:- wire up the bpf syscall
- fix TLB dump output for R3000 class TLBs
- fix strnlen_user return value if no NUL character was found.
- fix build with binutils 2.24.51+. While there is no binutils 2.25
release yet, toolchains derived from binutils 2.24.51+ are already
in common use.
- the Octeon GPIO code forgot to offline GPIO IRQs.
- fix build error for XLP.
- fix possible BUG assertion with EVA for CMA"* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Fix build with binutils 2.24.51+
MIPS: R3000: Fix debug output for Virtual page number
MIPS: Fix strnlen_user() return value in case of overlong strings.
MIPS: CMA: Do not reserve memory if not required
MIPS: Wire up bpf syscall.
MIPS/Xlp: Remove the dead function destroy_irq() to fix build error
MIPS: Octeon: Make Octeon GPIO IRQ chip CPU hotplug-aware -
Pull xfs fixes from Dave Chinner:
"This update fixes a warning in the new pagecache_isize_extended() and
updates some related comments, another fix for zero-range
misbehaviour, and an unforntuately large set of fixes for regressions
in the bulkstat code.The bulkstat fixes are large but necessary. I wouldn't normally push
such a rework for a -rcX update, but right now xfsdump can silently
create incomplete dumps on 3.17 and it's possible that even xfsrestore
won't notice that the dumps were incomplete. Hence we need to get
this update into 3.17-stable kernels ASAP.In more detail, the refactoring work I committed in 3.17 has exposed a
major hole in our QA coverage. With both xfsdump (the major user of
bulkstat) and xfsrestore silently ignoring missing files in the
dump/restore process, incomplete dumps were going unnoticed if they
were being triggered. Many of the dump/restore filesets were so small
that they didn't evenhave a chance of triggering the loop iteration
bugs we introduced in 3.17, so we didn't exercise the code
sufficiently, either.We have already taken steps to improve QA coverage in xfstests to
avoid this happening again, and I've done a lot of manual verification
of dump/restore on very large data sets (tens of millions of inodes)
of the past week to verify this patch set results in bulkstat behaving
the same way as it does on 3.16.Unfortunately, the fixes are not exactly simple - in tracking down the
problem historic API warts were discovered (e.g xfsdump has been
working around a 20 year old bug in the bulkstat API for the past 10
years) and so that complicated the process of diagnosing and fixing
the problems. i.e. we had to fix bugs in the code as well as
discover and re-introduce the userspace visible API bugs that we
unwittingly "fixed" in 3.17 that xfsdump relied on to work correctly.Summary:
- incorrect warnings about i_mutex locking in pagecache_isize_extended()
and updates comments to match expected locking
- another zero-range bug fix for stray file size updates
- a bunch of fixes for regression in the bulkstat code introduced in
3.17"* tag 'xfs-for-linus-3.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs:
xfs: track bulkstat progress by agino
xfs: bulkstat error handling is broken
xfs: bulkstat main loop logic is a mess
xfs: bulkstat chunk-formatter has issues
xfs: bulkstat chunk formatting cursor is broken
xfs: bulkstat btree walk doesn't terminate
mm: Fix comment before truncate_setsize()
xfs: rework zero range to prevent invalid i_size updates
mm: Remove false WARN_ON from pagecache_isize_extended()
xfs: Check error during inode btree iteration in xfs_bulkstat()
xfs: bulkstat doesn't release AGI buffer on error -
Pull regulator fixes from Mark Brown:
"More changes than I'd like here, most of them for a single bug
repeated in a bunch of drivers with data not being initialized
correctly, plus a fix to lower the severity of a warning introduced in
the last merge window which can legitimately go off so we don't want
to alarm users excessively"* tag 'regulator-v3.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: s2mpa01: zero-initialize regulator match table array
regulator: max8660: zero-initialize regulator match table array
regulator: max77802: zero-initialize regulator match table
regulator: max77686: zero-initialize regulator match table
regulator: max1586: zero-initialize regulator match table array
regulator: max77693: Fix use of uninitialized regulator config
regulator: of: Lower the severity of the error with no container -
Pull spi bugfixes from Mark Brown:
"A couple of small driver fixes for v3.18, both quite problematic if
you hit a use case that's affected"* tag 'spi-v3.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: pxa2xx: toggle clocks on suspend if not disabled by runtime PM
spi: fsl-dspi: Fix CTAR selection -
The ENABLE_DEV_COREDUMP option is misleading as it implies that
it gets the framework enabled, this isn't true it just allows it
to get enabled if a driver needs it.Rename it to ALLOW_DEV_COREDUMP to better capture its semantics.
Signed-off-by: Johannes Berg
Reviewed-by: Josh Triplett
Acked-by: Aristeu Rozanski
Signed-off-by: Greg Kroah-Hartman -
It's desirable for allnconfig and tinyconfig targets to result in the
least amount of code possible. DISABLE_DEV_COREDUMP exists as a way to
switch off DEV_COREDUMP regardless if any drivers select
WANT_DEV_COREDUMP.This patch renames the option to ENABLE_DEV_COREDUMP and setting it to
'n' (as in allnconfig or tinyconfig) will effectively disable device
coredump.Cc: Josh Triplett
Reviewed-by: Josh Triplett
Signed-off-by: Aristeu Rozanski
Reviewed-by: Johannes Berg
Acked-by: Johannes Berg
Signed-off-by: Greg Kroah-Hartman -
Clients instantiated from OF get an IRQ mapping created at device
registration time. Dispose the mapping when the client is removed.Signed-off-by: Laurent Pinchart
Signed-off-by: Wolfram Sang
Cc: stable@kernel.org
