linux-stable.git/drivers/gpio, branch v5.4.136

gpio: pca953x: Add support for the On Semi pca9655

2021-07-20T14:10:44+00:00

[ Upstream commit 6d49b3a0f351925b5ea5047166c112b7590b918a ]

The On Semi pca9655 is a 16 bit variant of the On Semi pca9654 GPIO
expander, with 16 GPIOs and interrupt functionality.

Signed-off-by: Peter Robinson 
[Bartosz: fixed indentation as noted by Andy]
Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Sasha Levin

gpio: zynq: Check return value of pm_runtime_get_sync

2021-07-20T14:10:44+00:00

[ Upstream commit a51b2fb94b04ab71e53a71b9fad03fa826941254 ]

Return value of "pm_runtime_get_sync" API was neither captured nor checked.
Fixed it by capturing the return value and then checking for any warning.

Addresses-Coverity: "check_return"
Signed-off-by: Srinivas Neeli 
Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Sasha Levin

gpio: AMD8111 and TQMX86 require HAS_IOPORT_MAP

2021-07-07T12:22:58+00:00

[ Upstream commit c6414e1a2bd26b0071e2b9d6034621f705dfd4c0 ]

Both of these drivers use ioport_map(), so they need to
depend on HAS_IOPORT_MAP. Otherwise, they cannot be built
even with COMPILE_TEST on architectures without an ioport
implementation, such as ARCH=um.

Reported-by: kernel test robot 
Signed-off-by: Johannes Berg 
Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Sasha Levin

gpio: cadence: Add missing MODULE_DEVICE_TABLE

2021-06-03T06:59:08+00:00

[ Upstream commit 1e948b1752b58c9c570989ab29ceef5b38fdccda ]

This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.

Reported-by: Hulk Robot 
Signed-off-by: Zou Wei 
Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Sasha Levin

gpiolib: acpi: Add quirk to ignore EC wakeups on Dell Venue 10 Pro 5055

2021-05-22T09:38:29+00:00

[ Upstream commit da91ece226729c76f60708efc275ebd4716ad089 ]

Like some other Bay and Cherry Trail SoC based devices the Dell Venue
10 Pro 5055 has an embedded-controller which uses ACPI GPIO events to
report events instead of using the standard ACPI EC interface for this.

The EC interrupt is only used to report battery-level changes and
it keeps doing this while the system is suspended, causing the system
to not stay suspended.

Add an ignore-wake quirk for the GPIO pin used by the EC to fix the
spurious wakeups from suspend.

Signed-off-by: Hans de Goede 
Acked-by: Andy Shevchenko 
Signed-off-by: Andy Shevchenko 
Signed-off-by: Sasha Levin

gpio: omap: Save and restore sysconfig

2021-04-28T11:19:14+00:00

[ Upstream commit ddd8d94ca31e768c76cf8bfe34ba7b10136b3694 ]

As we are using cpu_pm to save and restore context, we must also save and
restore the GPIO sysconfig register. This is needed because we are not
calling PM runtime functions at all with cpu_pm.

We need to save the sysconfig on idle as it's value can get reconfigured by
PM runtime and can be different from the init time value. Device specific
flags like "ti,no-idle-on-init" can affect the init value.

Fixes: b764a5863fd8 ("gpio: omap: Remove custom PM calls and use cpu_pm instead")
Cc: Aaro Koskinen 
Cc: Adam Ford 
Cc: Andreas Kemnade 
Cc: Grygorii Strashko 
Cc: Peter Ujfalusi 
Signed-off-by: Tony Lindgren 
Acked-by: Grygorii Strashko 
Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Sasha Levin

gpio: sysfs: Obey valid_mask

2021-04-21T10:56:13+00:00

[ Upstream commit 23cf00ddd2e1aacf1873e43f5e0c519c120daf7a ]

Do not allow exporting GPIOs which are set invalid
by the driver's valid mask.

Fixes: 726cb3ba4969 ("gpiolib: Support 'gpio-reserved-ranges' property")
Signed-off-by: Matti Vaittinen 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Sasha Levin

gpiolib: acpi: Add missing IRQF_ONESHOT

2021-03-30T12:35:21+00:00

[ Upstream commit 6e5d5791730b55a1f987e1db84b078b91eb49e99 ]

fixed the following coccicheck:
./drivers/gpio/gpiolib-acpi.c:176:7-27: ERROR: Threaded IRQ with no
primary handler requested without IRQF_ONESHOT

Make sure threaded IRQs without a primary handler are always request
with IRQF_ONESHOT

Reported-by: Abaci Robot 
Signed-off-by: Yang Li 
Acked-by: Andy Shevchenko 
Signed-off-by: Andy Shevchenko 
Signed-off-by: Sasha Levin

gpio: pcf857x: Fix missing first interrupt

2021-03-04T09:26:49+00:00

commit a8002a35935aaefcd6a42ad3289f62bab947f2ca upstream.

If no n_latch value will be provided at driver probe then all pins will
be used as an input:

    gpio->out = ~n_latch;

In that case initial state for all pins is "one":

    gpio->status = gpio->out;

So if pcf857x IRQ happens with change pin value from "zero" to "one"
then we miss it, because of "one" from IRQ and "one" from initial state
leaves corresponding pin unchanged:
change = (gpio->status ^ status) & gpio->irq_enabled;

The right solution will be to read actual state at driver probe.

Cc: stable@vger.kernel.org
Fixes: 6e20a0a429bd ("gpio: pcf857x: enable gpio_to_irq() support")
Signed-off-by: Maxim Kiselev 
Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Greg Kroah-Hartman

gpio: ep93xx: Fix single irqchip with multi gpiochips

2021-02-17T09:35:14+00:00

commit 28dc10eb77a2db7681b08e3b109764bbe469e347 upstream.

Fixes the following warnings which results in interrupts disabled on
port B/F:

gpio gpiochip1: (B): detected irqchip that is shared with multiple gpiochips: please fix the driver.
gpio gpiochip5: (F): detected irqchip that is shared with multiple gpiochips: please fix the driver.

- added separate irqchip for each interrupt capable gpiochip
- provided unique names for each irqchip

Fixes: d2b091961510 ("gpio: ep93xx: Pass irqchip when adding gpiochip")
Cc: 
Signed-off-by: Nikita Shubin 
Tested-by: Alexander Sverdlin 
Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Greg Kroah-Hartman