Don't forget to unlock before returning an error code.
Fixes: d787dcdb9c ('bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The MSI Primo81 has a display in portrait mode but a touchscreen
in landscape mode. To have both of them use the same coordinate
system, the touchscreen-swapped-x-y property has to be set
for the touchscreen.
Signed-off-by: Karsten Merker <merker@debian.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
As SEC tone and voltage could have changed during
suspend(), restore them to their previous values at
resume().
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Gemei G9 has internal speakers and headphone jack. Audio switching
from internal speakers to headphones is automatically handled by
extra FT2012Q audio amplifier chip that works out of the box.
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
ADC seems to be using ldo2 for reference voltage.
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Add regulator nodes for axp209 using the axp209.dtsi include.
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The inet9f-rev03 tablet has multiple fire-buttons / direction controls,
add support for these using the same axis mapping as ps2 compatible game
controllers with the same stick / button layout use.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable the on-chip audio codec
Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable on-chip audio codec on the Wexler TAB7200 tablet.
Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable the on-chip audio codec on the Olimex A20-SOM-EVB
Signed-off-by: Marcus Weseloh <mweseloh42@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Enable the axp221 PMIC chip in the dts file.
Allows board to power off correctly from the poweroff command
This board requires dc1sw to be enabled in order to provide a power source
for the 5V DCDC converter that powers USB2.
This board uses dldo1 for 3.3V wifi power
This board requires dldo3 to be enabled at 2.8V in order to provide voltage
to the pullup resistors for the i2c0 bus.
Signed-off-by: Lawrence Yu <lyu@micile.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This baseboard from SWAC is equipped with the ICnova-A20 SoM from
Incircuit. This board is equipped with the following interfaces /
devices:
- 512 MiB SDRAM
- 4 GiB MLC NAND (Micron MT29F32G08CBACAWP or Hynix H27UBG8T2BTR)
- USB host
- LCD 800x480
- HDMI
- CAN
Note that the NAND support is still missing. As its currently not
supported in mainline for sunxi and especially for these MLC
devices.
The original plan was to also provide a dtsi for the ICnova SoM,
to put all the SoM internal nodes / properties there. But as I
don't have a clear overview of the SoM specific and baseboard
specific differences, I'm putting all in one dts for now. Once
somebody pushed support for some other baseboard using the
A20 SoM from Incircuit (e.g. the ADB4006 reference design), this
should be separated.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Marcus Heuer <marcus.heuer@swac.de>
[maxime: Fixed CPU regulator upper voltage boundary]
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The pcDuino V3 Nano has a 3.5mm TRRS jack socket for audio, using the
CTIA standard pinout, connected to HPOUTL, HPOUTR, HPCOM/HPCOMFB and
MICIN1/VMIC (via appropriate RC networks) on the A20. The PH00 GPIO is
wired for headphone plug detection: it reads 0 when nothing's plugged
in, and 1 when a plug is inserted.
LINEINL/R and FMINL/R are not connected.
Signed-off-by: Adam Sampson <ats@offog.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The DocBook description of this header has two issues:
- It calls the Kernel ABI as API, instead of kABI;
- It mentions that the DVB frontend kABI is not described
within the document. As this will actually generate a
single DocBook, this is actually not true, now that
the documentation for the frontend was added.
So, fix both issues.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This header file provides the kABI functions used by the
Digital TV Frontend core support. Add a description for
this kABI, to add at the device_drivers Kernel DocBook.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Documents the most used functions at the Digital TV
kABI: dvb_frontend_register(), dvb_frontend_unregister()
and dvb_frontend_detach().
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The dvb_frontend_reinitialise() function is a special case
used by just one frontend. Document it, for completeness.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This function is used mainly at the DVB core, in order to provide
emulation for a legacy ioctl. The only current exception is
the stv0299 driver, with takes more than 8ms to switch voltage,
breaking the emulation for FE_DISHNETWORK_SEND_LEGACY_CMD.
Document that.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Though the keyboard and other driver will continue to support the legacy
"gpio-key,wakeup", "linux,wakeup" boolean property to enable the wakeup
source, "wakeup-source" is the new standard binding.
This patch replaces all the legacy wakeup properties with the unified
"wakeup-source" property in order to avoid any futher copy-paste
duplication.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The Snowball gyro and magnetometer DRDY (data ready) lines are used
as interrupt triggers by the IIO subsystem, triggering new data
retrieveal on edges on this signal. Thus assign them as the primary
interrupt in the device tree. The "other interrupt" coming out of
the sensors is for alarms and similar complex events, the DRDY is
for periodic measures, which is what we want.
After this the generic_buffer tool from IIO tools gives a nice
stream of readings after enabling the desired channels in sysfs.
Cc: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The Rohm touchscreen reset and IRQ lines were registered and
configured at the HREF board level of the design, but it is an
integral part of the UIB (User Interface Board). Fix this by
pushing down the pin control node to the u8500 UIB file.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
While dax pmd mappings are functional in the nominal path they trigger
kernel crashes in the following paths:
BUG: unable to handle kernel paging request at ffffea0004098000
IP: [<ffffffff812362f7>] follow_trans_huge_pmd+0x117/0x3b0
[..]
Call Trace:
[<ffffffff811f6573>] follow_page_mask+0x2d3/0x380
[<ffffffff811f6708>] __get_user_pages+0xe8/0x6f0
[<ffffffff811f7045>] get_user_pages_unlocked+0x165/0x1e0
[<ffffffff8106f5b1>] get_user_pages_fast+0xa1/0x1b0
kernel BUG at arch/x86/mm/gup.c:131!
[..]
Call Trace:
[<ffffffff8106f34c>] gup_pud_range+0x1bc/0x220
[<ffffffff8106f634>] get_user_pages_fast+0x124/0x1b0
BUG: unable to handle kernel paging request at ffffea0004088000
IP: [<ffffffff81235f49>] copy_huge_pmd+0x159/0x350
[..]
Call Trace:
[<ffffffff811fad3c>] copy_page_range+0x34c/0x9f0
[<ffffffff810a0daf>] copy_process+0x1b7f/0x1e10
[<ffffffff810a11c1>] _do_fork+0x91/0x590
All of these paths are interpreting a dax pmd mapping as a transparent
huge page and making the assumption that the pfn is covered by the
memmap, i.e. that the pfn has an associated struct page. PTE mappings
do not suffer the same fate since they have the _PAGE_SPECIAL flag to
cause the gup path to fault. We can do something similar for the PMD
path, or otherwise defer pmd support for cases where a struct page is
available. For now, 4.4-rc and -stable need to disable dax pmd support
by default.
For development the "depends on BROKEN" line can be removed from
CONFIG_FS_DAX_PMD.
Cc: <stable@vger.kernel.org>
Cc: Jan Kara <jack@suse.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The descriptor list is walked in two points, in the bundle parsing and
cport parsing, this can make the next descriptor pointer in bundle to be
already removed by the cport remove descriptor and become invalid.
So, just get the next bundle until there no more left.
Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Allocate protocol and class values for the Audio Device Class
Protocol. Two values of each type are allocated: one for Audio
Management Connections and one for Audio Data Connections.
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This was used by gbsim earlier, but not anymore. Lets remove it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
If no platform devices binded to the driver but driver itself loaded and
exynos_sys_powerdown_conf is called from
arch/arm/mach-exynos/{suspend.c, pm.c} it will result in NULL pointer access,
to prevent this added check on pmu_context for NULL.
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Enable support for:
1. Haptic motor driver on Trats2 board (Maxim 77693) and Note 4 (Maxim
77843);
2. LED driver on Trats2 board (Maxim 77693).
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Enable support for Maxim 8997 Multi Function Device present on Trats and
Origen boards by toggling on drivers: main MFD, charger, haptic motor,
regulator, LED and RTC.
This allows to test and usage of these boards with multi_v7 config.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Enable support for:
1. Haptic motor driver on Trats2 board (Maxim 77693) and Note 4
(Maxim 77843);
2. LED driver on Trats2 board (Maxim 77693).
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Enable support for Maxim 8997 Multi Functional Device present on Trats and
Origen boards by toggling on drivers: charger, haptic motor,
LED, RTC and extcon.
This allows to test and usage of these boards with exynos config.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
fs/cachefiles/rdwr.c: In function ‘cachefiles_write_page’:
fs/cachefiles/rdwr.c:882: warning: ‘ret’ may be used uninitialized in
this function
If the jump to label "error" is taken, "ret" will indeed be
uninitialized, and random stack data may be printed by the debug code.
Fixes: 102f4d900c ("FS-Cache: Handle a write to the page immediately beyond the EOF marker")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The cpuidle state tables contain the maximum exit latency for each
cpuidle state. On x86, that is the exit latency for when the entire
package goes into that same idle state.
However, a lot of the time we only go into the core idle state,
not the package idle state. This means we see a much smaller exit
latency.
We have no way to detect whether we went into the core or package
idle state while idle, and that is ok.
However, the current menu_update logic does have the potential to
trip up the repeating pattern detection in get_typical_interval.
If the system is experiencing an exit latency near the idle state's
exit latency, some of the samples will have exit_us subtracted,
while others will not. This turns a repeating pattern into mush,
potentially breaking get_typical_interval.
Furthermore, for smaller sleep intervals, we know the chance that
all the cores in the package went to the same idle state are fairly
small. Dividing the measured_us by two, instead of subtracting the
full exit latency when hitting a small measured_us, will reduce the
error.
Signed-off-by: Rik van Riel <riel@redhat.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The menu governor carefully figures out how much time we typically
sleep for an estimated sleep interval, or whether there is a repeating
pattern going on, and corrects that estimate for the CPU load.
Then it proceeds to ignore that information when determining whether
or not to consider polling. This is not a big deal on most x86 CPUs,
which have very low C1 latencies, and the patch should not have any
effect on those CPUs.
However, certain CPUs (eg. Atom) have much higher C1 latencies, and
it would be good to not waste performance and power on those CPUs if
we are expecting a very low wakeup latency.
Disable polling based on the estimated interactivity requirement, not
on the time to the next timer interrupt.
Signed-off-by: Rik van Riel <riel@redhat.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The cpuidle menu governor has a forced cut-off for polling at 5us,
in order to deal with firmware that gives the OS bad information
on cpuidle states, leading to the system spending way too much time
in polling.
However, at least one x86 CPU family (Atom) has chips that have
a 20us break-even point for C1. Forcing the polling cut-off to
less than that wastes performance and power.
Increase the polling cut-off to 20us.
Systems with a lower C1 latency will be found in the states table by
the menu governor, which will pick those states as appropriate.
Signed-off-by: Rik van Riel <riel@redhat.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The Broadcom NAND driver is used by many different groups at Broadcom
now, so use the same mailing-list we use for other areas of the kernel.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Given that INTUOSHT < BAMBOO_PT
features->type >= INTUOSHT || features->type <= BAMBOO_PT
condition is always true, and therefore device_type is under certain
circumstances wrongly set with WACOM_DEVICETYPE_PAD bit set.
Fix the condition so that it actually represents the range as intended.
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
do_div() is meant to be used with an unsigned dividend.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
The NAND clock can be disabled on suspend and enabled on resume.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This macro is not used anymore, so it's just dead code.
Remove it.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Currently, the driver is trying to detect the presence of a chip
by issuing a RESET command before nand_scan_ident. This seems completely
redundant, and is also a layering violation as nand_scan_ident is in charge
of device detection.
This commit removes the RESET command use, and moves the initial
timing configuration to pxa3xx_nand_config_ident.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit simplifies the initial configuration performed
by pxa3xx_nand_scan. No functionality change is intended.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
The Data Flash Control Register (NDCR) contains two types
of parameters: those that are needed for device identification,
and those that can only be set after device identification.
Therefore, the driver can't set them all at once and instead
needs to configure the first group before nand_scan_ident()
and the second group later.
Let's split pxa3xx_nand_config in two halves, and set the
parameters that depend on the device geometry once this is known.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
The chunk size represents the size of the data chunks, which
is used by the controllers that allow to split transfered data.
However, the initial chunk size is used in a non-splitted way,
during device identification. Therefore, it must be large enough
for all the NAND commands issued during device identification.
This includes NAND_CMD_PARAM which was recently changed to
transfer up to 2048 bytes (for the redundant parameter pages).
Thus, the initial chunk size should be 2048 as well.
On Armada 370/XP platforms (NFCv2) booted without the keep-config
devicetree property, this commit fixes a timeout on the NAND_CMD_PARAM
command:
[..]
pxa3xx-nand f10d0000.nand: This platform can't do DMA on this device
pxa3xx-nand f10d0000.nand: Wait time out!!!
nand: device found, Manufacturer ID: 0x2c, Chip ID: 0x38
nand: Micron MT29F8G08ABABAWP
nand: 1024 MiB, SLC, erase size: 512 KiB, page size: 4096, OOB size: 224
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
The acpi_ec_delete_query() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Revert commit 3349fb64b2 (ACPI / SBS: Add 5 us delay to fix SBS
hangs on MacBook), since the delay introduced by it is not necessary
any more after commit add68d6aa9 (ACPI / SMBus: Fix boot stalls /
high CPU caused by reentrant code).
Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com>
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
