We better to use usual pattern for read-modify-update,
than doing some operations in definition block.
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
The touchpad of the ASUS laptops E403NA, X540NA, X541NA are not
responsive after suspend/resume. The following error message
shows after resume.
i2c_hid i2c-ELAN1200:00: failed to reset device.
On these laptops, the touchpad interrupt is connected via a GPIO
pin which is controlled by Intel pinctrl. After system resumes,
the GPIO is in ACPI mode and no longer works as an IRQ.
This commit saves the HOSTSW_OWN value during suspend, make sure
the HOSTSW_OWN mode remains the same after resume.
Signed-off-by: Chris Chiu <chiu@endlessm.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
In current driver, SET_LATE_SYSTEM_SLEEP_PM_OPS is used to install the
callbacks for suspend/resume.
GPIO pin may be used as the interrupt pin by some device. However, using
SET_LATE_SYSTEM_SLEEP_PM_OPS() to install the callbacks, the resume
callback is called after resume_device_irqs(). Unintended interrupts may
arrive due to resuming device irqs first, but the GPIO controller is not
properly restored.
Normally, for a SMP system, there are multiple cores, so even when there are
unintended interrupts, BSP gets the chance to initialize the GPIO chip soon.
But when there is only 1 core is active (other cores are offlined or
single core) during resume, it is more easily to observe the unintended
interrupts.
This patch renames the suspend/resume function by adding suffix "_noirq",
and installs the callbacks using SET_NOIRQ_SYSTEM_SLEEP_PM_OPS().
Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Version 1.13c of pin list has some changes in pin names for
Intel Cedarfork.
Update the driver accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linar.org>
saved-context in byt_gpio_probe is allocated via devm_kcalloc and is
used without checking for NULL in later functions. This patch avoids
such a scenario.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Well, hopefully 3rd time is a charm. We tried making that check
DMI_BIOS_VERSION and DMI_BOARD_VERSION, but the real one is
DMI_PRODUCT_VERSION.
Fixes: 86c5dd6860 ("pinctrl: cherryview: limit Strago DMI workarounds to version 1.0")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=197953
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1631930
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Clearing the GPIO_EN bit from chv_gpio_disable_free is a bad idea and
pinctrl-cherryview.c is the only Intel pinctrl driver doing something
like this.
Clearing the GPIO_EN bit means that if the pin was an output it is now
effectively floating. The datasheet is not clear what happens to pull ups /
downs in this case, but from testing it looks like these are disabled too,
also floating input pins.
One example where this is causing issues is the soc_button_array input
driver, this parses ACPI tables to create 2 platform devices for the
gpio_keys input driver. The list of GPIOs is passed through struct
gpio_keys_platform_data which uses gpio numbers rather then gpio_desc
pointers.
The buttons handled by this drivers short the pin to ground when pressed
and the volume buttons rely on the SoC's internal pull-up to pull the
pin high when the button is not pressed.
To get the gpio number, the soc_button_array code calls gpiod_get_index
followed by a desc_to_gpio call and then gpiod_put on the gpio_desc.
This last call causes chv_gpio_disable_free to clear the GPIO_EN bit.
When the gpio_keys driver then loads next it gets the gpio_desc again
causing the GPIO_EN bit to be set again and immediately reads the GPIO
value which for the volume buttons reads 0 at this time, causing a spurious
press of the volume buttons to get reported.
Putting a small delay between the gpio_desc request and the read fixes
this, I assume that this is caused by the pull-up being temporarily
disabled while the GPIO_EN bit is cleared as the powerbutton which also
has its GPIO_EN bit cleared does not have this problem.
The soc_button_array code is not the only code temporarily requesting GPIOs
the DWC3 PCI code also does this, to set the enable and reset GPIOs for the
external phy, so that the code instantiating the ULPI phy can read the
vendor and product ID registers from the phy. These GPIOs are released
after this so that the PHY driver can claim and use them when it loads.
Another example of temporary GPIO usage would be a user-space set_gpio
utility using the userspace ioctls to set a GPIO as output value 0 or 1,
having the GPIO revert to floating as soon as this utility exits would
certainly be unexpected behavior.
One argument in favor of clearing the GPIO_EN bit is if the GPIO is going
to be muxed to another function after being released, but in that case
chv_pinmux_set_mux() already clears it.
TL;DR: Clearing the GPIO_EN bit from is a bad idea, this commit therefor
removes the clearing from chv_gpio_disable_free(), replacing it with code
to clear the interrupt-trigger condition so that the GPIO stops generating
interrupts when released, as pinctrl-baytrail.c does.
Note this commit adds a !chv_pad_locked() condition to the trigger clearing
call, which the original GPIO_EN clearing code was missing.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This is a preparation patch for clearing the interrupt trigger from
chv_gpio_disable_free().
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Remove comma from terminator line to allow compiler fail
in case an entry has been put in a wrong place by any weird reason.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Remove comma from terminator line to allow compiler fail
in case an entry has been put in a wrong place by any weird reason.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Remove comma from terminator line to allow compiler fail
in case an entry has been put in a wrong place by any weird reason.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Remove comma from terminator line to allow compiler fail
in case an entry has been put in a wrong place by any weird reason.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Remove comma from terminator line to allow compiler fail
in case an entry has been put in a wrong place by any weird reason.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
There is no need to include acpi.h since driver doesn't use anything from it
except the propagation of mod_devicetable.h.
Include latter directly instead.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
There is no need to include acpi.h since driver doesn't use anything from it
except the propagation of mod_devicetable.h.
Include latter directly instead.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
There is no need to include acpi.h since driver doesn't use anything from it
except the propagation of mod_devicetable.h.
Include latter directly instead.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
The reason of including <linux/bitops.h> here is just for BIT() and Co macros.
Since commit 8bd9cb51da
("... Move some macros from <linux/bitops.h> to a new <linux/bits.h> file"),
<linux/bits.h> is enough for such compile-time macros.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Since there are no more users, unexport it and make static.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
The local ->probe() stub does nothing except calling
a generic Intel pin control probe function. Thus,
it's not needed and generic function may be called directly.
Convert the driver accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
The local ->probe() stub does nothing except calling
a generic Intel pin control probe function. Thus,
it's not needed and generic function may be called directly.
Convert the driver accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
The local ->probe() stub does nothing except calling
a generic Intel pin control probe function. Thus,
it's not needed and generic function may be called directly.
Convert the driver accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
The local ->probe() stub does nothing except calling
a generic Intel pin control probe function. Thus,
it's not needed and generic function may be called directly.
Convert the driver accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
The local ->probe() stub does nothing except calling
a generic Intel pin control probe function. Thus,
it's not needed and generic function may be called directly.
Convert the driver accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
The local ->probe() stub does nothing except calling
a generic Intel pin control probe function. Thus,
it's not needed and generic function may be called directly.
Convert the driver accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
The local ->probe() stub does nothing except calling
a generic Intel pin control probe function. Thus,
it's not needed and generic function may be called directly.
Convert the driver accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
We should get 'driver_data' from 'struct device' directly. Going via
platform_device is an unneeded step back and forth.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
We should get 'driver_data' from 'struct device' directly. Going via
platform_device is an unneeded step back and forth.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
We should get 'driver_data' from 'struct device' directly. Going via
platform_device is an unneeded step back and forth.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
No functional change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The local ->probe() stub does nothing except calling
a generic Intel pin control probe function. Thus,
it's not needed and generic function may be called directly.
This patch converts the driver accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
According to an updated pin list few names of the pins can be spelled better,
taking into account their primary functions.
Thus, update a pin list to cover B0 stepping.
Note, SPI numbering had been fixed even in A0 public documentation.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The parameter 'community' had been spelled incorrectly.
Fix it here.
As a side effect it satisfies static checkers that issue
the following warnings:
drivers/pinctrl/intel/pinctrl-intel.c:845: warning: Function parameter or member 'community' not described in 'intel_gpio_to_pin'
drivers/pinctrl/intel/pinctrl-intel.c:845: warning: Excess function parameter 'commmunity' description in 'intel_gpio_to_pin'
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Simple type conversion with no functional change implied.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Simple type conversion with no functional change implied.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Simple type conversion with no functional change implied.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Simple type conversion with no functional change implied.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Merge tag 'v4.19-rc6' into devel
This is the 4.19-rc6 release
I needed to merge this in because of extensive conflicts in
the MSM and Intel pin control drivers. I know how to resolve
them, so let's do it like this.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This reverts commit 55aedef50d.
Commit 55aedef50d ("pinctrl: intel: Do pin translation when lock IRQ")
added special translation from GPIO number to hardware pin number to
irq_reqres/relres hooks to avoid failure when IRQs are requested. The
actual failure happened inside gpiochip_lock_as_irq() because it calls
gpiod_get_direction() and pinctrl-intel.c::intel_gpio_get_direction()
implementation originally missed the translation so the two hooks made
it work by skipping the ->get_direction() call entirely (it overwrote
the default GPIOLIB provided functions).
The proper fix that adds translation to GPIO callbacks was merged with
commit 96147db1e1 ("pinctrl: intel: Do pin translation in other GPIO
operations as well"). This allows us to use the default GPIOLIB provided
functions again.
In addition as find out by Benjamin Tissoires the two functions
(intel_gpio_irq_reqres()/intel_gpio_irq_relres()) now cause problems of
their own because they operate on pin numbers and pass that pin number
to gpiochip_lock_as_irq() which actually expects a GPIO number.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=199911
Fixes: 55aedef50d ("pinctrl: intel: Do pin translation when lock IRQ")
Reported-and-tested-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
It turns out the HOSTSW_OWN register offset is different between LP and
H variants. The latter should use 0xc0 instead so fix that.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=199911
Fixes: a663ccf0fe ("pinctrl: intel: Add Intel Cannon Lake PCH-H pin controller support")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Consolidate IO accessors in the code to make maintenance a little bit easier
in the future.
No functional change intended.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
mrfld_read_bufcfg() helper checks if pin is correct and reads back
the current value of corresponding BUFCFG register.
While it adds lines of code it will be easier to maintain in the future.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
For some reason I thought GPIOLIB handles translation from GPIO ranges
to pinctrl pins but it turns out not to be the case. This means that
when GPIOs operations are performed for a pin controller having a custom
GPIO base such as Cannon Lake and Ice Lake incorrect pin number gets
used internally.
Fix this in the same way we did for lock/unlock IRQ operations and
translate the GPIO number to pin before using it.
Fixes: a60eac3239 ("pinctrl: intel: Allow custom GPIO base for pad groups")
Reported-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
There is no need to include linux/init.h when at the same time
we include linux/module.h.
Remove redundant inclusion.
While here, sort header block alphabetically for easy maintenance.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Compiler unsatisfied to see half described data structures
and issues warnings:
drivers/pinctrl/intel/pinctrl-cherryview.c:136: warning: Function parameter or member 'acpi_space_id' not described in 'chv_community'
drivers/pinctrl/intel/pinctrl-cherryview.c:169: warning: Function parameter or member 'saved_intmask' not described in 'chv_pinctrl'
drivers/pinctrl/intel/pinctrl-cherryview.c:169: warning: Function parameter or member 'saved_pin_context' not described in 'chv_pinctrl'
To satisfy it, describe mentioned members.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
For the long time no one complained about unused groups of pins
for fSPI and SMBUS.
Remove them for good and at the same time satisfy compiler,
otherwise get warning:
CC drivers/pinctrl/intel/pinctrl-cherryview.o
drivers/pinctrl/intel/pinctrl-cherryview.c:285:23: warning: ‘southwest_smbus_pins’ defined but not used [-Wunused-const-variable=]
static const unsigned southwest_smbus_pins[] = { 79, 81, 82 };
^~~~~~~~~~~~~~~~~~~~
drivers/pinctrl/intel/pinctrl-cherryview.c:269:23: warning: ‘southwest_fspi_pins’ defined but not used [-Wunused-const-variable=]
static const unsigned southwest_fspi_pins[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
^~~~~~~~~~~~~~~~~~~
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We have some data structures duplicated across the drivers.
Let's deduplicate them by using ones that being provided by
pinctrl-intel.h.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Since the driver can't be compiled as a module, there is no need
to use no-op macros in the code.
Thus, remove unneeded MODULE_DEVICE_TABLE() macro from the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We now using a common macro for PM operations in pin control drivers for Intel
SoCs, and since that macro relies on the definition and macro from linux/pm.h
header file, it's logical to include it directly in pinctrl-intel.h. Otherwise
it's a bit fragile and requires a proper ordering of header inclusion in C
files.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The gpio base for GPP-E was set incorrectly to 258 instead of 256,
preventing the touchpad working on my Tong Fang GK5CN5Z laptop.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=200787
Signed-off-by: Simon Detheridge <s@sd.ai>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Andy Shevchenko