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The data pin 0-7 of the NAND controller are actually missing from
the nand pinctrl group, so we fix it here.
Fixes: 0f15f500ff2c ("pinctrl: meson: Add GXL pinctrl definitions")
Reported-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The data pin 0-7 of the NAND controller are actually missing from
the nand pinctrl group, so we fix it here.
Fixes: cd1e3b01c7d3 ("pinctrl: amlogic: gxbb: add nand pins")
Reported-by: Liang Yang <liang.yang@amlogic.com>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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slot can be controlled by user-space, hence leading to
a potential exploitation of the Spectre variant 1 vulnerability,
as warned by smatch:
drivers/media/dvb-core/dvb_ca_en50221.c:1479 dvb_ca_en50221_io_write() warn: potential spectre issue 'ca->slot_info' (local cap)
Acked-by: "Jasmin J." <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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I was debugging some gpio issues and I thought that the output of gpio
debugfs was telling me the high or low level of the gpios with a '1' or
a '0'. We saw a line like this though:
gpio93 : in 4 2mA pull down
and I started to think that there may be a gas leak in the building
because '4' doesn't mean high or low, and other pins said '0' or '1'. It
turns out, '4' is the function selection for the pinmux of the gpio and
not the value on the pin. Reading code helps decipher what debugfs is
actually saying.
Add support to read the input or output pin depending on how the pin is
configured so we can easily see the high or low value of the pin in
debugfs. Now the output looks like
gpio93 : in low func4 2mA pull down
which clearly shows that the pin is an input, low, with function 4 and a
2mA drive strength plus a pull down.
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Alexandru M Stan <amstan@chromium.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The "dev" function is selected with the value 0x4 not 0x01.
Fixes: commit d7ae8f8dee7f ("pinctrl: mvebu: pinctrl driver for 98DX3236 SoC")
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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DebugFS strings about pin pull status for no_keeper SoC are wrong
Fix this by adding a different string array for no_keeper SoC
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Move the code responsible for creating the dummy i2c clients used by
chips taking multiple slave addresses to a separate function.
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Peter Rosin <peda@axentia.se>
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This allows us to drop two opencoded for loops. We also don't need to
check if the i2c client is NULL before calling i2c_unregister_device().
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Peter Rosin <peda@axentia.se>
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We now have a managed variant of nvmem_register(). Use it
in at24_probe().
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Peter Rosin <peda@axentia.se>
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Commit feb2f19b1e8f ("eeprom: at24: move platform data processing into
a separate routine") introduced a bug where we incorrectly retireve the
at24_chip_data structure. Remove the unnecessary ampersand operator.
Fixes: feb2f19b1e8f ("eeprom: at24: move platform data processing into a separate routine")
Reported-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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The new helper returns index of the matching string in an array.
We are going to use it here.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The pcal6524 has another set of registers to fine control
the interrupt handling.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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PCAL chips ("L" seems to stand for "latched") have additional
registers starting at address 0x40 to control the latches,
interrupt mask, pull-up and pull down etc.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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which makes it easier to match them with the data sheets.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Casting a pointer to u16 can produce a compiler warning such as this:
drivers/gpio/gpio-ge.c: In function 'gef_gpio_probe':
drivers/gpio/gpio-ge.c:83:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
gc->ngpio = (u16)of_device_get_match_data(&pdev->dev);
^
Cast the pointer through a uintptr_t to avoid the warning.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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There is a shifter vs vanilla mask bug here. We want to test if 1 << 11
is set but we're testing if 0xb is set.
Fixes: 9a6c505f7df1 ("gpiolib: add hogs support for machine code")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use of_device_get_match_data() instead of open-coding it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use the SPDX license identifier for GPLv2.0 or later and remove the
license boilerplate.
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The DesignWare GPIO IP can be configured for either 1 interrupt or 1
per GPIO in port A, but the driver currently only supports 1 interrupt.
See the DesignWare DW_apb_gpio Databook description of the
'GPIO_INTR_IO' parameter.
This change allows the driver to work with up to 32 interrupts, it will
get as many interrupts as specified in the DT 'interrupts' property.
It doesn't do anything clever with the different interrupts, it just calls
the same handler used for single interrupt hardware.
ACPI companion code provided by Hoan Tran <hotran@apm.com>. This was tested
on X-Gene by Hoan.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Hoan Tran <hotran@apm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Don't populate the const read-only arrays 'port' on the stack but
instead make them static. Makes the object code smaller:
Before:
text data bss dec hex filename
8542 4088 672 13302 33f6 drivers/gpio/gpio-gpio-mm.o
10959 4952 832 16743 4167 drivers/gpio/gpio-104-dio-48e.o
9022 5064 1408 15494 3c86 drivers/gpio/gpio-104-idi-48.o
After:
text data bss dec hex filename
8372 4144 672 13188 3384 drivers/gpio/gpio-gpio-mm.o
10790 5008 832 16630 40f6 drivers/gpio/gpio-104-dio-48e.o
8853 5152 1408 15413 3c35 linux/drivers/gpio/gpio-104-idi-48.o
(gcc version 7.2.0 x86_64)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so we should only include <linux/gpio/driver.h>.
However this driver was using gpio_get_value() to fetch the
current value of a GPIO used as IRQ line to determine trigger
direction, so we need a better way than looping over the
global GPIO numberspace.
Fix this by just calling the .get() function in the GPIO chip,
as we don't want to end up creating a consumer dependency
on ourselves.
Cc: Vladimir Zapolskiy <vz@mleia.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The MVEBU driver is requesting GPIO descriptors from itself, which
is fine, but we have proper APIs to do this in a controlled way, so
stop calling into the private functions of the GPIO library and use
the gpiochip_* functions instead. Only include <linux/gpio/driver.h>
and <linux/gpio/consumer.h> since we are both producers and consumers
in this case.
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so only include <linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so include only <linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so include only <linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so only include <linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so only include <linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so only include <linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so only include <linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so only include <linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so include only <linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This is a driver so only include <linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This switches the Loongson driver over to using the bitops BIT()
macros and drops some local variables and make the code easier
to read (in my opinion).
Cc: Keguang Zhang <keguang.zhang@gmail.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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It is pretty helpful to create some kind of device for backing the
GPIO chips, especially when preparing the driver for using
GENERIC_GPIO, so let's create a simple platform device and a simple
platform device driver and create the gpiochip in the .probe() routine
for the device driver. Keep all at the core initcall so the behaviour
is the same as before.
Cc: Keguang Zhang <keguang.zhang@gmail.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The driver includes <linux/gpio.h> which is wrong, rely on
<linux/gpio/driver.h> and remove to call to gpio_set_value() in
favor of calling the internal function. Move functions around to
avoid forward declarations.
Cc: Keguang Zhang <keguang.zhang@gmail.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Board files constitute a significant part of the users of the legacy
GPIO framework. In many cases they only export a line and set its
desired value. We could use GPIO hogs for that like we do for DT and
ACPI but there's no support for that in machine code.
This patch proposes to extend the machine.h API with support for
registering hog tables in board files.
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Don't populate the const read-only array 'ports' on the stack but instead
make it static. Makes the object code smaller by over 100 buytes:
Before:
text data bss dec hex filename
10959 4952 832 16743 4167 drivers/gpio/gpio-104-dio-48e.o
After:
text data bss dec hex filename
10790 5008 832 16630 40f6 drivers/gpio/gpio-104-dio-48e.o
(gcc version 7.2.0 x86_64)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch will toggle the EIC level to emulate the edge trigger to
support PMIC EIC egdge trigger function, which is required by gpio-keys
driver.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The Spreadtrum debounce EIC and latch EIC can not support edge trigger,
but most GPIO users (like gpio-key driver) only use the edge trigger,
thus the EIC driver need add some support to emulate the edge trigger
to satisfy this requirement.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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