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git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pul removal of obsolete architecture ports from Arnd Bergmann:
"This removes the entire architecture code for blackfin, cris, frv,
m32r, metag, mn10300, score, and tile, including the associated device
drivers.
I have been working with the (former) maintainers for each one to
ensure that my interpretation was right and the code is definitely
unused in mainline kernels. Many had fond memories of working on the
respective ports to start with and getting them included in upstream,
but also saw no point in keeping the port alive without any users.
In the end, it seems that while the eight architectures are extremely
different, they all suffered the same fate: There was one company in
charge of an SoC line, a CPU microarchitecture and a software
ecosystem, which was more costly than licensing newer off-the-shelf
CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
seems that all the SoC product lines are still around, but have not
used the custom CPU architectures for several years at this point. In
contrast, CPU instruction sets that remain popular and have actively
maintained kernel ports tend to all be used across multiple licensees.
[ See the new nds32 port merged in the previous commit for the next
generation of "one company in charge of an SoC line, a CPU
microarchitecture and a software ecosystem" - Linus ]
The removal came out of a discussion that is now documented at
https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
marking any ports as deprecated but remove them all at once after I
made sure that they are all unused. Some architectures (notably tile,
mn10300, and blackfin) are still being shipped in products with old
kernels, but those products will never be updated to newer kernel
releases.
After this series, we still have a few architectures without mainline
gcc support:
- unicore32 and hexagon both have very outdated gcc releases, but the
maintainers promised to work on providing something newer. At least
in case of hexagon, this will only be llvm, not gcc.
- openrisc, risc-v and nds32 are still in the process of finishing
their support or getting it added to mainline gcc in the first
place. They all have patched gcc-7.3 ports that work to some
degree, but complete upstream support won't happen before gcc-8.1.
Csky posted their first kernel patch set last week, their situation
will be similar
[ Palmer Dabbelt points out that RISC-V support is in mainline gcc
since gcc-7, although gcc-7.3.0 is the recommended minimum - Linus ]"
This really says it all:
2498 files changed, 95 insertions(+), 467668 deletions(-)
* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
MAINTAINERS: UNICORE32: Change email account
staging: iio: remove iio-trig-bfin-timer driver
tty: hvc: remove tile driver
tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
serial: remove tile uart driver
serial: remove m32r_sio driver
serial: remove blackfin drivers
serial: remove cris/etrax uart drivers
usb: Remove Blackfin references in USB support
usb: isp1362: remove blackfin arch glue
usb: musb: remove blackfin port
usb: host: remove tilegx platform glue
pwm: remove pwm-bfin driver
i2c: remove bfin-twi driver
spi: remove blackfin related host drivers
watchdog: remove bfin_wdt driver
can: remove bfin_can driver
mmc: remove bfin_sdh driver
input: misc: remove blackfin rotary driver
input: keyboard: remove bf54x driver
...
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The Spreadtrum PMIC EIC controller contains only one bank of debounce EIC,
and this bank contains 16 EICs. Each EIC can only be used as input mode,
as well as supporting the debounce and the capability to trigger interrupts
when detecting input signals.
Signed-off-by: Baolin Wang <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The Spreadtrum digital-chip EIC controller has 4 sub-modules: debounce EIC,
latch EIC, async EIC and sync EIC, and each sub-module can has multiple
banks and each bank contains 8 EICs.
Each EIC can only be used as input mode, and has the capability to trigger
interrupts when detecting input signals.
Signed-off-by: Baolin Wang <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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platform_get_resource() may return NULL, add proper
check to avoid potential NULL dereferencing.
This is detected by Coccinelle semantic patch.
@@
expression pdev, res, n, t, e, e1, e2;
@@
res = platform_get_resource(pdev, t, n);
+ if (!res)
+ return -EINVAL;
... when != res == NULL
e = devm_ioremap(e1, res->start, e2);
Signed-off-by: Wei Yongjun <[email protected]>
[[email protected]: Fixed patch to apply on current tree]
Signed-off-by: Alban Bedel <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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Some qcom platforms make some GPIOs or pins unavailable for use by
non-secure operating systems, and thus reading or writing the registers
for those pins will cause access control issues. Add support for a DT
property to describe the set of GPIOs that are available for use so that
higher level OSes are able to know what pins to avoid reading/writing.
Non-DT platforms can add support by directly updating the
chip->valid_mask.
Signed-off-by: Stephen Boyd <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
Tested-by: Timur Tabi <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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We don't need to clear out these bits when we set them immediately
after. Use kmalloc_array() to skip clearing the bits.
Suggested-by: Andy Shevchenko <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
Tested-by: Timur Tabi <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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We're going to use similar code to allocate and set all the bits in a
mask for valid gpios to use. Extract the code from the irqchip version
so it can be reused.
Signed-off-by: Stephen Boyd <[email protected]>
Tested-by: Timur Tabi <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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If we failed to create the top debugfs directory, we must not try to
create the child nodes. We currently only check if gpio_mockup_dbg_dir
is not NULL, but it can also contain an errno if debugfs is disabled
in build options. Use IS_ERR_OR_NULL() instead.
Signed-off-by: Bartosz Golaszewski <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The Pyra-Handheld originally used the tca6424 but recently we have
replaced it by the pin and package compatible pcal6524. So let's
add this to the bindings and the driver.
And while we are at it, the pcal9555a does not have a compatible entry
either but is already supported by the device id table.
Signed-off-by: H. Nikolaus Schaller <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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Enable an optional bus clock provided by DT.
Signed-off-by: Phil Edworthy <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The new challenge is to remove VLAs from the kernel
(see https://lkml.org/lkml/2018/3/7/621)
This patch replaces a VLA with an appropriate call to kmalloc_array.
Signed-off-by: Laura Abbott <[email protected]>
Reviewed-by: Nandor Han <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The new challenge is to remove VLAs from the kernel
(see https://lkml.org/lkml/2018/3/7/621)
This patch replaces several a VLA with an appropriate call to
kmalloc_array.
Signed-off-by: Laura Abbott <[email protected]>
Reviewed-and-tested-by: Lukas Wunner <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The cris architecture is getting removed, so we no longer need the
etraxfs driver.
Signed-off-by: Arnd Bergmann <[email protected]>
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The WinSystems WS16C48 device provides 48 lines of digital I/O accessed
via six 8-bit ports. Since eight input lines are acquired on a single
port input read, the WS16C48 GPIO driver may improve multiple input
reads by utilizing a get_multiple callback. This patch implements the
ws16c48_gpio_get_multiple function which serves as the respective
get_multiple callback.
Signed-off-by: William Breathitt Gray <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The Diamond Systems GPIO-MM series of devices contain two 82C55A
devices, which each feature three 8-bit ports of I/O. Since eight input
lines are acquired on a single port input read, the GPIO-MM GPIO driver
may improve multiple input reads by utilizing a get_multiple callback.
This patch implements the gpiomm_gpio_get_multiple function which serves
as the respective get_multiple callback.
Signed-off-by: William Breathitt Gray <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The ACCES I/O 104-IDI-48 series of devices provides 48
optically-isolated inputs accessed via six 8-bit ports. Since eight
input lines are acquired on a single port input read, the 104-IDI-48
GPIO driver may improve multiple input reads by utilizing a get_multiple
callback. This patch implements the idi_48_gpio_get_multiple function
which serves as the respective get_multiple callback.
Signed-off-by: William Breathitt Gray <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The ACCES I/O 104-DIO-48E series of devices contain two Programmable
Peripheral Interface (PPI) chips of type 82C55, which each feature three
8-bit ports of I/O. Since eight input lines are acquired on a single
port input read, the 104-DIO-48E GPIO driver may improve multiple input
reads by utilizing a get_multiple callback. This patch implements the
dio48e_gpio_get_multiple function which serves as the respective
get_multiple callback.
Signed-off-by: William Breathitt Gray <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The ACCES I/O PCIe-IDIO-24 series of devices provides 24
optically-isolated digital I/O accessed via six 8-bit ports. Since eight
input lines are acquired on a single port input read -- and similarly
eight output lines are set on a single port output write -- the
PCIe-IDIO-24 GPIO driver may improve multiple I/O reads/writes by
utilizing a get_multiple/set_multiple callbacks. This patch implements
the idio_24_gpio_get_multiple function which serves as the respective
get_multiple callback, and implements the idio_24_gpio_set_multiple
function which serves as the respective set_multiple callback.
Signed-off-by: William Breathitt Gray <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The ACCES I/O PCI-IDIO-16 series of devices provides 16
optically-isolated digital inputs accessed via two 8-bit ports. Since
eight input lines are acquired on a single port input read, the
PCI-IDIO-16 GPIO driver may improve multiple input reads by utilizing a
get_multiple callback. This patch implements the
idio_16_gpio_get_multiple function which serves as the respective
get_multiple callback.
Signed-off-by: William Breathitt Gray <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The ACCES I/O 104-IDIO-16 series of devices provides 16
optically-isolated digital inputs accessed via two 8-bit ports. Since
eight input lines are acquired on a single port input read, the
104-IDIO-16 GPIO driver may improve multiple input reads by utilizing a
get_multiple callback. This patch implements the
idio_16_gpio_get_multiple function which serves as the respective
get_multiple callback.
Signed-off-by: William Breathitt Gray <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <[email protected]>
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This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <[email protected]>
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This makes the code more readable by using the BIT() macro.
Signed-off-by: Linus Walleij <[email protected]>
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This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <[email protected]>
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This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <[email protected]>
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Using BIT() makes (1 << foo) constructions easier to read, and
also account for common mistakes where bit 31 is not working
because of numbers being interpreted as negative unless
specified as unsigned.
Signed-off-by: Linus Walleij <[email protected]>
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This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>. Refrain from using GPIOF_* flags in
the driver, just use 1/0 to return direction.
Signed-off-by: Linus Walleij <[email protected]>
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This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>. Drop the include of <linux/gpio.h>
from the platform data header as well, it serves no purpose.
Signed-off-by: Linus Walleij <[email protected]>
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This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <[email protected]>
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This driver does not make use of the functions in
<linux/of_gpio.h> so drop this include.
Signed-off-by: Linus Walleij <[email protected]>
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The Emma Mobile (EM) GPIO driver uses the too generic include
<linux/gpio.h>. It is a driver so it should just use
<linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <[email protected]>
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This driver does not make use of the functions in
<linux/of_gpio.h> so drop this include.
Signed-off-by: Linus Walleij <[email protected]>
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This driver has no business including <linux/gpio.h>, it is a
driver so include <linux/gpio/driver.h>.
GPIOF_DIR_IN/GPIOF_DIR_OUT are for consumers and should not be
used in drivers to use just 1/0 instead.
Signed-off-by: Linus Walleij <[email protected]>
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Linux 4.16-rc5 merged into the GPIO devel branch to resolve
a nasty conflict between fixes and devel in the RCAR driver.
Signed-off-by: Linus Walleij <[email protected]>
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Bamvor changed his mail so let's updat his mail address
everywhere.
Cc: Bamvor Jian Zhang <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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Since commit ab82fa7da4dce5c7 ("gpio: rcar: Prevent module clock disable
when wake-up is enabled"), when a GPIO is used for wakeup, the GPIO
block's module clock (if exists) is manually kept running during system
suspend, to make sure the device stays active.
However, this explicit clock handling is merely a workaround for a
failure to properly communicate wakeup information to the device core.
Instead, set the device's power.wakeup_path field, to indicate this
device is part of the wakeup path. Depending on the PM Domain's
active_wakeup configuration, the genpd core code will keep the device
enabled (and the clock running) during system suspend when needed.
This allows for the removal of all explicit clock handling code from the
driver.
Signed-off-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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Commit 7ed915059c3001 (gpio: raspberrypi-ext: fix firmware dependency)
fixed the Kconfig dependency to ensure that gpio-raspberrypi-exp is not
built-in when the firmware is a module. But the Kconfig syntax for doing
so is cryptic. Add a comment to make it a little easier.
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: Baruch Siach <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The Spreadtrum SC9860 platform GPIO controller contains 16 groups and
each group contains 16 GPIOs. Each GPIO can set input/output and has
the interrupt capability.
Signed-off-by: Baolin Wang <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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When the firmware driver is a loadable module, the gpio driver cannot be
built-in:
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_set':
gpio-raspberrypi-exp.c:(.text+0xb4): undefined reference to `rpi_firmware_property'
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_get':
gpio-raspberrypi-exp.c:(.text+0x1ec): undefined reference to `rpi_firmware_property'
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_get_direction':
gpio-raspberrypi-exp.c:(.text+0x360): undefined reference to `rpi_firmware_property'
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_get_polarity':
gpio-raspberrypi-exp.c:(.text+0x4d4): undefined reference to `rpi_firmware_property'
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_dir_out':
gpio-raspberrypi-exp.c:(.text+0x670): undefined reference to `rpi_firmware_property'
drivers/gpio/gpio-raspberrypi-exp.o:gpio-raspberrypi-exp.c:(.text+0x7fc): more undefined references to `rpi_firmware_property' follow
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_dir_in':
drivers/gpio/gpio-raspberrypi-exp.o: In function `rpi_exp_gpio_probe':
gpio-raspberrypi-exp.c:(.text+0x93c): undefined reference to `rpi_firmware_get'
We already have a Kconfig dependency for it, but when compile-testing, it
is disregarded.
This changes the dependency so that compile-testing is only done when the
firmware driver is completely disabled.
Fixes: a98d90e7d588 ("gpio: raspberrypi-exp: Driver for RPi3 GPIO expander via mailbox service")
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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"failed" maybe makes observer confuse when a consumer can not
lookup, so change to a friendly information.
Signed-off-by: Wang Dongsheng <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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Now that arch/metag/ has been removed, along with TZ1090 SoC support,
remove the TZ1090 GPIO drivers. They are of no value without the
architecture and SoC platform code.
Signed-off-by: James Hogan <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Linus Walleij <[email protected]>
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of_get_named_gpiod_flags() used directly in of_find_gpio() or indirectly
through of_find_spi_gpio() or of_find_regulator_gpio() can return
-EPROBE_DEFER. This gets overwritten by the subsequent of_find_*_gpio()
calls.
This patch fixes this by trying of_find_spi_gpio() or
of_find_regulator_gpio() only if deferred probing was not requested by
the previous of_get_named_gpiod_flags() call.
Fixes: 6a537d48461d ("gpio: of: Support regulator nonstandard GPIO properties")
Fixes: c85823390215 ("gpio: of: Support SPI nonstandard GPIO properties")
Signed-off-by: Chen-Yu Tsai <[email protected]>
[Augmented to fit with Maxime's patch]
Signed-off-by: Linus Walleij <[email protected]>
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Commits c85823390215 ("gpio: of: Support SPI nonstandard GPIO properties")
and 6a537d48461d ("gpio: of: Support regulator nonstandard GPIO
properties") have introduced a regression in the way error codes from
of_get_named_gpiod_flags are handled.
Previously, those errors codes were returned immediately, but the two
commits mentioned above are now overwriting the error pointer, meaning that
whatever value has been returned will be dropped in favor of whatever the
two new functions will return.
This might not be a big deal except for EPROBE_DEFER, on which GPIOlib
customers will depend on, and that will now be returned as an hard error
which means that they will not probe anymore, instead of gently deferring
their probe.
Since EPROBE_DEFER basically means that we have found a valid property but
there was no GPIO controller registered to handle it, fix this issues by
returning it as soon as we encounter it.
Fixes: c85823390215 ("gpio: of: Support SPI nonstandard GPIO properties")
Fixes: 6a537d48461d ("gpio: of: Support regulator nonstandard GPIO properties")
Signed-off-by: Maxime Ripard <[email protected]>
[Fold in fix to the fix]
Signed-off-by: Linus Walleij <[email protected]>
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This reverts commit 92a8046c9d952a2a7d21dfcd3afadc72a0bc0f72.
Now that the patch series changing ISA_BUS_API dependency to selection
was merged this reversion will do the same for gpio-winbond driver to
make it consistent with other ISA bus gpio drivers.
Signed-off-by: Maciej S. Szmigiero <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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Remove the GPL v2 license boilerplate and update with
the SPDX license identifier.
Signed-off-by: Rajmohan Mani <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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The ISA_BUS_API Kconfig option enables the compilation of the ISA bus
driver. The ISA bus driver does not perform any hardware interaction,
and is instead just a thin layer of software abstraction to eliminate
boilerplate code common to ISA-style device drivers. Since ISA_BUS_API
has no dependencies and does not jeopardize the integrity of the system
when enabled, drivers should select it when the ISA bus driver
functionality is needed.
Cc: Linus Walleij <[email protected]>
Signed-off-by: William Breathitt Gray <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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This patch adds an implementation that saves and restores the state of
GPIO configuration on suspend and resume.
Signed-off-by: Hien Dang <[email protected]>
Signed-off-by: Takeshi Kihara <[email protected]>
[Modify structure of the bank info to simplify a saving registers]
[Remove DEV_PM_OPS macro]
Signed-off-by: Yoshihiro Kaneko <[email protected]>
Tested-by: Nguyen Viet Dung <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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We were going out through the (legacy) gpio API to read the value
of a line to set up polarity inversion. This is abusive. Do something
less abusive by looking up the actual struct gpio_chip *
instance and calling .get() directly on it.
Acked-by: Hoan Tran <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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This terminology is more precise. Also cut the stride calculation
in the preprocessor, it confuses more than it helps when reading
the driver.
Acked-by: Hoan Tran <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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