linux-toradex.git/drivers/gpio/Makefile, branch v5.14

gpio: Add support for IDT 79RC3243x GPIO controller

2021-06-07T13:57:50+00:00

IDT 79RC3243x SoCs integrated a gpio controller, which handles up
to 32 gpios. All gpios could be used as an interrupt source.

Signed-off-by: Thomas Bogendoerfer 
Reviewed-by: Linus Walleij 
Signed-off-by: Bartosz Golaszewski

Merge tag 'gpio-updates-for-v5.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

2021-05-05T19:39:29+00:00

Pull gpio updates from Bartosz Golaszewski:

 - new driver for the Realtek Otto GPIO controller

 - ACPI support for gpio-mpc8xxx

 - edge event support for gpio-sch (+ Kconfig fixes)

 - Kconfig improvements in gpio-ich

 - fixes to older issues in gpio-mockup

 - ACPI quirk for ignoring EC wakeups on Dell Venue 10 Pro 5055

 - improve the GPIO aggregator code by using more generic interfaces
   instead of reimplementing them in the driver

 - convert the DT bindings for gpio-74x164 to yaml

 - documentation improvements

 - a slew of other minor fixes and improvements to GPIO drivers

* tag 'gpio-updates-for-v5.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (34 commits)
  dt-bindings: gpio: add YAML description for rockchip,gpio-bank
  gpio: mxs: remove useless function
  dt-bindings: gpio: fairchild,74hc595: Convert to json-schema
  gpio: it87: remove unused code
  gpio: 104-dio-48e: Fix coding style issues
  gpio: mpc8xxx: Add ACPI support
  gpio: ich: Switch to be dependent on LPC_ICH
  gpio: sch: Drop MFD_CORE selection
  gpio: sch: depends on LPC_SCH
  gpiolib: acpi: Add quirk to ignore EC wakeups on Dell Venue 10 Pro 5055
  gpio: sch: Hook into ACPI GPE handler to catch GPIO edge events
  gpio: sch: Add edge event support
  gpio: aggregator: Replace custom get_arg() with a generic next_arg()
  lib/cmdline: Export next_arg() for being used in modules
  gpio: omap: Use device_get_match_data() helper
  gpio: Add Realtek Otto GPIO support
  dt-bindings: gpio: Binding for Realtek Otto GPIO
  docs: kernel-parameters: Add gpio_mockup_named_lines
  docs: kernel-parameters: Move gpio-mockup for alphabetic order
  lib: bitmap: provide devm_bitmap_alloc() and devm_bitmap_zalloc()
  ...

gpio: Add Realtek Otto GPIO support

2021-05-05T14:07:40+00:00

Realtek MIPS SoCs (platform name Otto) have GPIO controllers with up to
64 GPIOs, divided over two banks. Each bank has a set of registers for
32 GPIOs, with support for edge-triggered interrupts.

Each GPIO bank consists of four 8-bit GPIO ports (ABCD and EFGH). Most
registers pack one bit per GPIO, except for the IMR register, which
packs two bits per GPIO (AB-CD).

Although the byte order is currently assumed to have port A..D at offset
0x0..0x3, this has been observed to be reversed on other, Lexra-based,
SoCs (e.g. RTL8196E/97D/97F).

Interrupt support is disabled for the fallback devicetree-compatible
'realtek,otto-gpio'. This allows for quick support of GPIO banks in
which the byte order would be unknown. In this case, the port ordering
in the IMR registers may not match the reversed order in the other
registers (DCBA, and BA-DC or DC-BA).

Signed-off-by: Sander Vanheule 
Reviewed-by: Linus Walleij 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Bartosz Golaszewski

gpio: Support ROHM BD71815 GPOs

2021-04-14T09:19:22+00:00

Support GPO(s) found from ROHM BD71815 power management IC. The IC has two
GPO pins but only one is properly documented in the data-sheet. The driver
exposes by default only the documented GPO. The second GPO is connected to
E5 pin and is marked as GND in the data-sheet. Control for this
undocumented pin can be enabled using a special DT property.

This driver is derived from work by Peter Yang 
although not so much of the original is left.

Signed-off-by: Matti Vaittinen 
Acked-by: Bartosz Golaszewski 
Acked-by: Linus Walleij 
Signed-off-by: Lee Jones

gpio: msic: Drop driver from Makefile

2021-02-15T10:43:33+00:00

Driver is gone, no need to keep a Makefile entry for it. Remove.

Reported-by: Hans de Goede 
Signed-off-by: Andy Shevchenko

gpio: intel-mid: Remove driver for deprecated platform

2021-02-15T10:43:32+00:00

Intel Moorestown and Medfield are quite old Intel Atom based
32-bit platforms, which were in limited use in some Android phones,
tablets and consumer electronics more than eight years ago.

There are no bugs or problems ever reported outside from Intel
for breaking any of that platforms for years. It seems no real
users exists who run more or less fresh kernel on it. The commit
05f4434bc130 ("ASoC: Intel: remove mfld_machine") also in align
with this theory.

Due to above and to reduce a burden of supporting outdated drivers
we remove the support of outdated platforms completely.

Moreover this code duplicates gpio-pxa since the IP has been derived
from XScale implementation. If anybody wants to resurrect this
it has to be part of gpio-pxa.c.

Signed-off-by: Andy Shevchenko 
Acked-by: Linus Walleij

gpio: remove zte zx driver

2021-02-15T10:43:29+00:00

The zte zx platform is getting removed, so this driver is no
longer needed.

Cc: Jun Nie 
Cc: Shawn Guo 
Signed-off-by: Arnd Bergmann 
Reviewed-by: Linus Walleij 
Signed-off-by: Bartosz Golaszewski

gpio: visconti: Add Toshiba Visconti GPIO support

2021-02-15T10:43:26+00:00

Add the GPIO driver for Toshiba Visconti ARM SoCs.

Signed-off-by: Nobuhiro Iwamatsu 
Reviewed-by: Punit Agrawal 
Reviewed-by: Linus Walleij 
Signed-off-by: Bartosz Golaszewski

gpio: gpio-hisi: Add HiSilicon GPIO support

2020-12-14T09:10:27+00:00

This GPIO driver is for HiSilicon's ARM SoC.

HiSilicon's GPIO controller support double-edge interrupt and multi-core
concurrent access.

ACPI table example for this GPIO controller:
Device (GPO0)
{
	Name (_HID, "HISI0184")
	Device (PRTA)
	{
		Name (_ADR, Zero)
		Name (_UID, Zero)
		Name (_DSD, Package (0x01)
		{
			Package (0x02)
			{
				"ngpios",
				0x20
			}
		})
	}
}

Signed-off-by: Luo Jiaxing 
Link: https://lore.kernel.org/r/1607934255-52544-2-git-send-email-luojiaxing@huawei.com
Signed-off-by: Linus Walleij

gpio: msc313: MStar MSC313 GPIO driver

2020-12-05T21:41:22+00:00

This adds a driver that supports the GPIO block found in
MStar/SigmaStar ARMv7 SoCs.

The controller seems to have enough register for 128 lines
but where they are wired up differs between chips and
no currently known chip uses anywhere near 128 lines so there
needs to be some per-chip data to collect together what lines
actually have physical pins attached and map the right names to them.

The core peripherals seem to use the same lines on the
currently known chips but the lines used for the sensor
interface, lcd controller etc pins seem to be totally
different between the infinity and mercury chips

The code tries to collect all of the re-usable names,
offsets etc together so that it's easy to build the extra
per-chip data for other chips in the future.

So far this only supports the MSC313 and MSC313E chips.

Support for the SSC8336N (mercury5) is trivial to add once
all of the lines have been mapped out.

Signed-off-by: Daniel Palmer 
Link: https://lore.kernel.org/r/20201129110803.2461700-4-daniel@0x0f.com
Signed-off-by: Linus Walleij