Commit Graph

3292 Commits

Author SHA1 Message Date
William Breathitt Gray
f72b10713c gpio: 104-idi-48: Implement get_multiple callback
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 <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-26 10:26:38 +02:00
William Breathitt Gray
d2d02bcdd5 gpio: 104-dio-48e: Implement get_multiple callback
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 <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-26 10:26:14 +02:00
William Breathitt Gray
ca37081595 gpio: pcie-idio-24: Implement get_multiple/set_multiple callbacks
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 <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-26 10:24:55 +02:00
William Breathitt Gray
810ebfc5ef gpio: pci-idio-16: Implement get_multiple callback
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 <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-26 10:24:06 +02:00
William Breathitt Gray
15f59cfff9 gpio: 104-idio-16: Implement get_multiple callback
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 <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-26 10:10:18 +02:00
Linus Walleij
6e9554a48b gpio: ks8695: Include the right header
This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-19 01:50:31 +01:00
Linus Walleij
430f649987 gpio: kempld: Include the right header
This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-19 01:50:31 +01:00
Linus Walleij
96d0d03dc4 gpio: janz-ttl: Use BIT() macro
This makes the code more readable by using the BIT() macro.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-19 01:50:30 +01:00
Linus Walleij
1c947b7f48 gpio: janz-ttl: Include the right header
This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-19 01:50:30 +01:00
Linus Walleij
c3a174036f gpio: it87: Include the right header
This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-19 01:50:29 +01:00
Linus Walleij
7a8fd1f5cc gpio: ich: Use BIT() macro
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 <linus.walleij@linaro.org>
2018-03-19 01:50:29 +01:00
Linus Walleij
3f4290d4dc gpio: ich: Include the right header
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 <linus.walleij@linaro.org>
2018-03-19 01:50:29 +01:00
Linus Walleij
f63109f0cb gpio: htc-gpio: Include the right header
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 <linus.walleij@linaro.org>
2018-03-19 01:50:28 +01:00
Linus Walleij
00d712a930 gpio: grgpio: Include the right header
This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-19 01:50:28 +01:00
Linus Walleij
7113ea8a8f gpio: ftgpio010: Drop of_gpio.h include
This driver does not make use of the functions in
<linux/of_gpio.h> so drop this include.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-19 01:50:24 +01:00
Linus Walleij
7275cb75b9 gpio: em: Use the right include
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 <linus.walleij@linaro.org>
2018-03-19 01:50:07 +01:00
Linus Walleij
d90f2adee4 gpio: ge: Drop of_gpio.h include
This driver does not make use of the functions in
<linux/of_gpio.h> so drop this include.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-19 01:50:07 +01:00
Linus Walleij
1cb6610aec gpio: dln2: Include proper header
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 <linus.walleij@linaro.org>
2018-03-19 01:50:07 +01:00
Linus Walleij
95260c17b2 Linux 4.16-rc5
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Merge tag 'v4.16-rc5' into devel

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 <linus.walleij@linaro.org>
2018-03-18 17:48:59 +01:00
Linus Walleij
4f9a4cd66c gpio: mockup: Update Bamvors mail address
Bamvor changed his mail so let's updat his mail address
everywhere.

Cc: Bamvor Jian Zhang <bamv2005@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-06 09:04:15 +01:00
Geert Uytterhoeven
9ac79ba9c7 gpio: rcar: Use wakeup_path i.s.o. explicit clock handling
Since commit ab82fa7da4 ("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 <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-05 09:01:21 +01:00
Baruch Siach
94337b7261 gpio: raspberrypi-exp: explain Kconfig dependency
Commit 7ed915059c (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 <arnd@arndb.de>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-02 13:00:30 +01:00
Baolin Wang
9a3821c2bb gpio: Add GPIO driver for Spreadtrum SC9860 platform
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 <baolin.wang@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-02 11:00:43 +01:00
Arnd Bergmann
7ed915059c gpio: raspberrypi-ext: fix firmware dependency
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: a98d90e7d5 ("gpio: raspberrypi-exp: Driver for RPi3 GPIO expander via mailbox service")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-02 09:46:45 +01:00
Wang Dongsheng
9d5a1f2ca6 gpiolib: friendly debug information for consumer
"failed" maybe makes observer confuse when a consumer can not
lookup, so change to a friendly information.

Signed-off-by: Wang Dongsheng <dongsheng.wang@hxt-semitech.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-02 08:45:41 +01:00
James Hogan
8f6d3b0147 gpio: Drop TZ1090 drivers
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 <jhogan@kernel.org>
Cc: linux-gpio@vger.kernel.org
Cc: linux-metag@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-01 15:31:02 +01:00
Chen-Yu Tsai
ce27fb2c56 gpio: Handle deferred probing in of_find_gpio() properly
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: 6a537d4846 ("gpio: of: Support regulator nonstandard GPIO properties")
Fixes: c858233902 ("gpio: of: Support SPI nonstandard GPIO properties")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
[Augmented to fit with Maxime's patch]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-27 09:48:07 +01:00
Maxime Ripard
6662ae6af8 gpiolib: Keep returning EPROBE_DEFER when we should
Commits c858233902 ("gpio: of: Support SPI nonstandard GPIO properties")
and 6a537d4846 ("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: c858233902 ("gpio: of: Support SPI nonstandard GPIO properties")
Fixes: 6a537d4846 ("gpio: of: Support regulator nonstandard GPIO properties")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
[Fold in fix to the fix]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-27 09:47:32 +01:00
Maciej S. Szmigiero
b995ff3b30 Revert "gpio: winbond: fix ISA_BUS_API dependency"
This reverts commit 92a8046c9d.

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 <mail@maciej.szmigiero.name>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-26 11:27:30 +01:00
Rajmohan Mani
ca34b4f0be gpio: tps68470: Update to SPDX license identifier
Remove the GPL v2 license boilerplate and update with
the SPDX license identifier.

Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-23 15:26:42 +01:00
William Breathitt Gray
35decc803c gpio: Change ISA_BUS_API dependency to selection
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 <linus.walleij@linaro.org>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 16:15:33 +01:00
Hien Dang
51750fb167 gpio: gpio-rcar: Support S2RAM
This patch adds an implementation that saves and restores the state of
GPIO configuration on suspend and resume.

Signed-off-by: Hien Dang <hien.dang.eb@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
[Modify structure of the bank info to simplify a saving registers]
[Remove DEV_PM_OPS macro]
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Tested-by: Nguyen Viet Dung <dung.nguyen.aj@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:50:20 +01:00
Linus Walleij
62c16234bb gpio: dwapb: Call directly into the gpiochip to read value
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 <hotran@apm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:31:19 +01:00
Linus Walleij
89f99feb9c gpio: dwapb: Use "stride" rather than "size" for register distance
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 <hotran@apm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:30:44 +01:00
Linus Walleij
63f2dc0a76 gpio: include consumer header in gpiolib.h
We are forward-declaring enum gpiod_flags, but this is not referenced
by pointer, it is a real struct member, so we need to actually include
it to compile anything including the local gpiolib.h header.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:30:31 +01:00
Markus Elfring
75f8f5af0c gpio-intel-mid: Delete an error message
Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:29:05 +01:00
Axel Lin
2773eb2f98 gpio: tegra: Convert to use DEFINE_SHOW_ATTRIBUTE macro
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:25:40 +01:00
Markus Elfring
4b7edaef79 gpio: merrifield: Delete an error message
Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:25:40 +01:00
Markus Elfring
4aed95793f gpio-ml-ioh: Delete an error message
Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:25:39 +01:00
Markus Elfring
f97364c9b8 gpio: omap: Improve a size determination
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:25:32 +01:00
Markus Elfring
9117d40b5d gpio: omap: Delete an error message
Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:25:23 +01:00
Markus Elfring
2c3087e164 gpio: timberdale: Improve a size determination
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:14:58 +01:00
Markus Elfring
587ca5ed56 gpio: timberdale: Delete an error message
Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 15:14:03 +01:00
Jonathan Neuschäfer
8f55fed3c9 gpio: Add GPIO driver for Nintendo Wii
The Nintendo Wii's chipset (called "Hollywood") has a GPIO controller
that supports a configurable number of pins (up to 32), interrupts, and
some special mechanisms to share the controller between the system's
security processor (an ARM926) and the PowerPC CPU. Pin multiplexing is
not supported.

This patch adds a basic driver for this GPIO controller. Interrupt
support will come in a later patch.

This patch is based on code developed by Albert Herranz and the GameCube
Linux Team, file arch/powerpc/platforms/embedded6xx/hlwd-gpio.c,
available at https://github.com/DeltaResero/GC-Wii-Linux-Kernels, but
has grown quite dissimilar.

v3:
- Do some style cleanups, as suggest by Andy Shevchenko

v2:
- Change hlwd_gpio_driver.driver.name to "gpio-hlwd" to match the
  filename (was "hlwd_gpio")
- Remove unnecessary include of linux/of_gpio.h, as suggested by Linus
  Walleij.
- Add struct device pointer to context struct to make it possible to use
  dev_info(hlwd->dev, "..."), as suggested by Linus Walleij
- Use the GPIO_GENERIC library to reduce code size, as suggested by
  Linus Walleij
- Use iowrite32be instead of __raw_writel for big-endian MMIO access, as
  suggested by Linus Walleij
- Remove commit message paragraph suggesting to diff against the
  original driver, because it's so different now

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Cc: Albert Herranz <albert_herranz@yahoo.es>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 13:54:35 +01:00
Dave Stevenson
a98d90e7d5 gpio: raspberrypi-exp: Driver for RPi3 GPIO expander via mailbox service
Pi3 and Compute Module 3 have a GPIO expander that the
VPU communicates with.
There is a mailbox service that now allows control of this
expander, so add a kernel driver that can make use of it.

Reviewed-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-22 13:49:59 +01:00
Linus Walleij
69a87f290b gpio: ftgpio010: Fix some more registers
There is a register for "bypass" which seems to not be
used for anything in some silicon designs, but may be used
in others, and there is both a raw and masked interrupt
status register.

Define them all for clarity, no semantic changes.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-13 08:17:45 +01:00
David Lechner
3c87d7c874 gpio: davinci: add support for pinmux gpio ranges
This adds support for the pinmux gpio ranges feature to the DaVinci gpio
driver. Only device tree is supported since the non-DT boards don't
use a generic pinmux controller.

Cc: Keerthy <j-keerthy@ti.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-12 09:36:06 +01:00
Markus Elfring
b5cd7802dd gpio-wm831x: Use seq_putc() in wm831x_gpio_dbg_show()
A single character (line break) should be put into a sequence.
Thus use the corresponding function "seq_putc".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-02-12 09:36:06 +01:00
Linus Torvalds
a9a08845e9 vfs: do bulk POLL* -> EPOLL* replacement
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-11 14:34:03 -08:00
Linus Torvalds
ef991796be This is the bulk of pin control changes for the v4.16 kernel cycle:
Core changes:
 
 - After lengthy discussions and partly due to my ignorance, we have
   merged a patch making pinctrl_force_default() and pinctrl_force_sleep()
   reprogram the states into the hardware of any hogged pins, even
   if they are already in the desired state. This only apply to hogged
   pins since groups of pins owned by drivers need to be managed by
   each driver, lest they could not do things like runtime PM and
   put pins to sleeping state even if the system as a whole is not
   in sleep.
 
 New drivers:
 
 - New driver for the Microsemi Ocelot SoC. This is used in ethernet
   switches.
 
 - The X-Powers AXP209 GPIO driver was extended to also deal with pin
   control and moved over from the GPIO subsystem. This circuit is
   a mixed-mode integrated circuit which is part of AllWinner designs.
 
 - New subdriver for the Qualcomm MSM8998 SoC, core of a high end
   mobile devices (phones) chipset.
 
 - New subdriver for the ST Microelectronics STM32MP157 MPU and
   STM32F769 MCU from the STM32 family.
 
 - New subdriver for the MediaTek MT7622 SoC. This is used for routers,
   repeater, gateways and such network infrastructure.
 
 - New subdriver for the NXP (former Freescale) i.MX 6ULL. This SoC has
   multimedia features and target "smart devices", I guess in-car
   entertainment, in-flight entertainment, industrial control panels etc.
 
 General improvements:
 
 - Incremental improvements on the SH-PFC subdrivers for things like
   the CAN bus.
 
 - Enable the glitch filter on Baytrail GPIOs used for interrupts.
 
 - Proper handling of pins to GPIO ranges on the Semtec SX150X
 
 - An IRQ setup ordering fix on MCP23S08.
 
 - A good set of janitorial coding style fixes.
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Merge tag 'pinctrl-v4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v4.16 kernel cycle.
  Like with GPIO it is actually a bit calm this time.

  Core changes:

   - After lengthy discussions and partly due to my ignorance, we have
     merged a patch making pinctrl_force_default() and
     pinctrl_force_sleep() reprogram the states into the hardware of any
     hogged pins, even if they are already in the desired state.

     This only apply to hogged pins since groups of pins owned by
     drivers need to be managed by each driver, lest they could not do
     things like runtime PM and put pins to sleeping state even if the
     system as a whole is not in sleep.

  New drivers:

   - New driver for the Microsemi Ocelot SoC. This is used in ethernet
     switches.

   - The X-Powers AXP209 GPIO driver was extended to also deal with pin
     control and moved over from the GPIO subsystem. This circuit is a
     mixed-mode integrated circuit which is part of AllWinner designs.

   - New subdriver for the Qualcomm MSM8998 SoC, core of a high end
     mobile devices (phones) chipset.

   - New subdriver for the ST Microelectronics STM32MP157 MPU and
     STM32F769 MCU from the STM32 family.

   - New subdriver for the MediaTek MT7622 SoC. This is used for
     routers, repeater, gateways and such network infrastructure.

   - New subdriver for the NXP (former Freescale) i.MX 6ULL. This SoC
     has multimedia features and target "smart devices", I guess in-car
     entertainment, in-flight entertainment, industrial control panels
     etc.

  General improvements:

   - Incremental improvements on the SH-PFC subdrivers for things like
     the CAN bus.

   - Enable the glitch filter on Baytrail GPIOs used for interrupts.

   - Proper handling of pins to GPIO ranges on the Semtec SX150X

   - An IRQ setup ordering fix on MCP23S08.

   - A good set of janitorial coding style fixes"

* tag 'pinctrl-v4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (102 commits)
  pinctrl: mcp23s08: fix irq setup order
  pinctrl: Forward declare struct device
  pinctrl: sunxi: Use of_clk_get_parent_count() instead of open coding
  pinctrl: stm32: add STM32F769 MCU support
  pinctrl: sx150x: Add a static gpio/pinctrl pin range mapping
  pinctrl: sx150x: Register pinctrl before adding the gpiochip
  pinctrl: sx150x: Unregister the pinctrl on release
  pinctrl: ingenic: Remove redundant dev_err call in ingenic_pinctrl_probe()
  pinctrl: sprd: Use seq_putc() in sprd_pinconf_group_dbg_show()
  pinctrl: pinmux: Use seq_putc() in pinmux_pins_show()
  pinctrl: abx500: Use seq_putc() in abx500_gpio_dbg_show()
  pinctrl: mediatek: mt7622: align error handling of mtk_hw_get_value call
  pinctrl: mediatek: mt7622: fix potential uninitialized value being returned
  pinctrl: uniphier: refactor drive strength get/set functions
  pinctrl: imx7ulp: constify struct imx_cfg_params_decode
  pinctrl: imx: constify struct imx_pinctrl_soc_info
  pinctrl: imx7d: simplify imx7d_pinctrl_probe
  pinctrl: imx: use struct imx_pinctrl_soc_info as a const
  pinctrl: sunxi-pinctrl: fix pin funtion can not be match correctly.
  pinctrl: qcom: Add msm8998 pinctrl driver
  ...
2018-02-02 14:22:53 -08:00