Commit Graph

696 Commits

Author SHA1 Message Date
Charles Keepax
9d50f95bc0
gpio: swnode: Add ability to specify native chip selects for SPI
SPI devices can specify a cs-gpios property to enumerate their
chip selects. Under device tree, a zero entry in this property can
be used to specify that a particular chip select is using the SPI
controllers native chip select, for example:

        cs-gpios = <&gpio1 0 0>, <0>;

Here, the second chip select is native. However, when using swnodes
there is currently no way to specify a native chip select. The
proposal here is to register a swnode_gpio_undefined software node,
that can be specified to allow the indication of a native chip
select. For example:

static const struct software_node_ref_args device_cs_refs[] = {
	{
		.node  = &device_gpiochip_swnode,
		.nargs = 2,
		.args  = { 0, GPIO_ACTIVE_LOW },
	},
	{
		.node  = &swnode_gpio_undefined,
		.nargs = 0,
	},
};

Register the swnode as the gpiolib is initialised and check in
swnode_get_gpio_device() if the returned node matches
swnode_gpio_undefined and return -ENOENT, which matches the
behaviour of the device tree system when it encounters a 0 phandle.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20240416100904.3738093-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-04-16 20:00:27 +09:00
Linus Torvalds
a3df5d5422 Pin control changes for the v6.9 kernel cycle:
No core changes this time around.
 
 New drivers:
 
 - New driver for Renesas R8A779H0 also known as R-Car V4M.
 
 - New driver for the Awinic AW9523/B I2C GPIO expander.
   I found this living out-of-tree in OpenWrt as an upstream
   attempt had stalled on the finishing line, so I picked it
   up and finished the job.
 
 Improvements:
 
 - The Nomadik pin control driver was for years re-used out of
   tree for the ST STA chips, and now the IP was re-used in a
   MIPS automotive SoC called MobilEyeq5, so it has been split
   in pin control and GPIO drivers so the latter can be reused
   by MobilEyeq5. (Along with a long list of cleanups.)
 
 - A lot of overall cleanup and tidying up.
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Merge tag 'pinctrl-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "No core changes this time around.

  New drivers:

   - New driver for Renesas R8A779H0 also known as R-Car V4M.

   - New driver for the Awinic AW9523/B I2C GPIO expander. I found this
     living out-of-tree in OpenWrt as an upstream attempt had stalled on
     the finishing line, so I picked it up and finished the job.

  Improvements:

   - The Nomadik pin control driver was for years re-used out of tree
     for the ST STA chips, and now the IP was re-used in a MIPS
     automotive SoC called MobilEyeq5, so it has been split in pin
     control and GPIO drivers so the latter can be reused by MobilEyeq5.
     (Along with a long list of cleanups)

   - A lot of overall cleanup and tidying up"

* tag 'pinctrl-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (87 commits)
  drivers/gpio/nomadik: move dummy nmk_gpio_dbg_show_one() to header
  gpio: nomadik: remove BUG_ON() in nmk_gpio_populate_chip()
  dt-bindings: pinctrl: qcom: update compatible name for match with driver
  pinctrl: aw9523: Make the driver tristate
  pinctrl: nomadik: fix dereference of error pointer
  gpio: nomadik: Back out some managed resources
  pinctrl: aw9523: Add proper terminator
  pinctrl: core: comment that pinctrl_add_gpio_range() is deprecated
  pinctrl: pinmux: Suppress error message for -EPROBE_DEFER
  pinctrl: Add driver for Awinic AW9523/B I2C GPIO Expander
  dt-bindings: pinctrl: Add bindings for Awinic AW9523/AW9523B
  gpio: nomadik: Finish conversion to use firmware node APIs
  gpio: nomadik: fix Kconfig dependencies inbetween pinctrl & GPIO
  pinctrl: da9062: Add OF table
  dt-bindings: pinctrl: at91: add sam9x7
  pinctrl: ocelot: remove redundant assignment to variable ret
  gpio: nomadik: grab optional reset control and deassert it at probe
  gpio: nomadik: support mobileye,eyeq5-gpio
  gpio: nomadik: handle variadic GPIO count
  gpio: nomadik: support shared GPIO IRQs
  ...
2024-03-14 10:22:26 -07:00
Andy Shevchenko
caddc92c57 gpio: nomadik: Finish conversion to use firmware node APIs
Previously driver got a few updates in order to replace OF APIs by
respective firmware node, however it was not finished to the logical
end, e.g., some APIs that has been used are still require OF node
to be passed. Finish that job by converting leftovers to use firmware
node APIs.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20240302173401.217830-1-andy.shevchenko@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2024-03-03 09:43:10 +01:00
Théo Lebrun
b824f841a4 gpio: nomadik: fix Kconfig dependencies inbetween pinctrl & GPIO
PINCTRL_NOMADIK cannot select GPIO_NOMADIK without first selecting
GPIOLIB on which GPIO_NOMADIK depends. GPIO_NOMADIK depends on OF_GPIO,
it is a direct dependency.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202403010917.pnDhdS1Y-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202403011102.v8w2zPOU-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202403011329.1VnABMRz-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202403011546.Hpt8sBTa-lkp@intel.com/
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240301-mbly-gpio-kconfig-fix-v1-1-2785cebd475d@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2024-03-01 14:30:28 +01:00
Théo Lebrun
3c30cc26df gpio: nomadik: support mobileye,eyeq5-gpio
We create a custom compatible for the STA2X11 IP block as integrated
into the Mobileye EyeQ5 platform. Its wake and alternate functions have
been disabled, we want to avoid touching those registers.

We both do: (1) early return in functions that do not support the
platform, but with warnings, and (2) avoid calling those functions in
the first place.

We ensure that pinctrl-nomadik is not used with this STA2X11 variant.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-24-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2024-02-29 10:36:55 +01:00
Théo Lebrun
966942ae49 gpio: nomadik: extract GPIO platform driver from drivers/pinctrl/nomadik/
Previously, drivers/pinctrl/nomadik/pinctrl-nomadik.c registered two
platform drivers: pinctrl & GPIO. Move the GPIO aspect to the
drivers/gpio/ folder, as would be expected.

Both drivers are intertwined for a reason; pinctrl requires access to
GPIO registers for pinmuxing, pull-disable, disabling interrupts while
setting the muxing and wakeup control. Information sharing is done
through a shared array containing GPIO chips and a few helper
functions. That shared array is not touched from gpio-nomadik when
CONFIG_PINCTRL_NOMADIK is not defined.

Make no change to the code that moved into gpio-nomadik; there should be
no behavior change following. A few functions are shared and header
comments are added. Checkpatch warnings are addressed. NUM_BANKS is
renamed to NMK_MAX_BANKS.

It is supported to compile gpio-nomadik without pinctrl-nomadik. The
opposite is not true.

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://lore.kernel.org/r/20240228-mbly-gpio-v2-6-3ba757474006@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2024-02-29 10:22:33 +01:00
Stephen Boyd
f837fe1bff gpio: Add ChromeOS EC GPIO driver
The ChromeOS embedded controller (EC) supports setting the state of
GPIOs when the system is unlocked, and getting the state of GPIOs in all
cases. The GPIOs are on the EC itself, so the EC acts similar to a GPIO
expander. Add a driver to get and set the GPIOs on the EC through the
host command interface.

Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-02-26 14:37:50 +01:00
Martin Kaiser
3eac8bbed2 gpio: vf610: enable COMPILE_TEST
Enable COMPILE_TEST for the vf610 gpio driver to support test builds on
systems without this hardware.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-02-02 14:32:12 +01:00
Martin Kaiser
f575957882 gpio: vf610: allow disabling the vf610 driver
The vf610 gpio driver is enabled by default for all i.MX machines,
without any option to disable it in a board-specific config file.

Most i.MX chipsets have no hardware for this driver. Change the default
to enable GPIO_VF610 for SOC_VF610 and disable it otherwise.

Add a text description after the bool type, this makes the driver
selectable by make config etc.

Fixes: 30a35c07d9 ("gpio: vf610: drop the SOC_VF610 dependency for GPIO_VF610")
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-02-02 14:32:03 +01:00
Jim Liu
c4f8457d17 gpio: nuvoton: Add Nuvoton NPCM sgpio driver
Add Nuvoton BMC NPCM7xx/NPCM8xx sgpio driver support.
Nuvoton NPCM SGPIO module is combine serial to parallel IC (HC595)
and parallel to serial IC (HC165), and use APB3 clock to control it.
This interface has 4 pins  (D_out , D_in, S_CLK, LDSH).
BMC can use this driver to increase 64 GPI pins and 64 GPO pins to use.

Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-01-03 11:25:41 +01:00
Tzuyi Chang
eee636bff0 gpio: rtd: Add support for Realtek DHC(Digital Home Center) RTD SoCs
This driver enables configuration of GPIO direction, GPIO values, GPIO
debounce settings and handles GPIO interrupts.

Signed-off-by: Tzuyi Chang <tychang@realtek.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-01-03 10:46:21 +01:00
Linus Torvalds
2c40c1c6ad USB/Thunderbolt changes for 6.7-rc1
Here is the "big" set of USB and Thunderbolt changes for 6.7-rc1.
 Nothing really major in here, just lots of constant development for new
 hardware.  Included in here are:
   - Thunderbolt (i.e. USB4) fixes for reported issues and support for
     new hardware types and devices
   - USB typec additions of new drivers and cleanups for some existing
     ones
   - xhci cleanups and expanded tracing support and some platform
     specific updates
   - USB "La Jolla Cove Adapter (LJCA)" support added, and the gpio, spi,
     and i2c drivers for that type of device (all acked by the respective
     subsystem maintainers.)
   - lots of USB gadget driver updates and cleanups
   - new USB dwc3 platforms supported, as well as other dwc3 fixes and
     cleanups
   - USB chipidea driver updates
   - other smaller driver cleanups and additions, full details in the
     shortlog
 
 All of these have been in the linux-next tree for a while with no
 reported problems, EXCEPT for some merge conflicts that you will run
 into in your tree.  2 of them are in device-tree files, which will be
 trivial to resolve (accept both sides), and the last in the
 drivers/gpio/gpio-ljca.c file, in the remove callback, resolution should
 be pretty trivial (take the version in this branch), see here:
 	https://lore.kernel.org/all/20231016134159.11d8f849@canb.auug.org.au/
 for details, or I can provide a resolved merge point if needed.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/Thunderbolt updates from Greg KH:
 "Here is the "big" set of USB and Thunderbolt changes for 6.7-rc1.
  Nothing really major in here, just lots of constant development for
  new hardware. Included in here are:

   - Thunderbolt (i.e. USB4) fixes for reported issues and support for
     new hardware types and devices

   - USB typec additions of new drivers and cleanups for some existing
     ones

   - xhci cleanups and expanded tracing support and some platform
     specific updates

   - USB "La Jolla Cove Adapter (LJCA)" support added, and the gpio,
     spi, and i2c drivers for that type of device (all acked by the
     respective subsystem maintainers.)

   - lots of USB gadget driver updates and cleanups

   - new USB dwc3 platforms supported, as well as other dwc3 fixes and
     cleanups

   - USB chipidea driver updates

   - other smaller driver cleanups and additions, full details in the
     shortlog

  All of these have been in the linux-next tree for a while with no
  reported problems"

* tag 'usb-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (167 commits)
  usb: gadget: uvc: Add missing initialization of ssp config descriptor
  usb: storage: set 1.50 as the lower bcdDevice for older "Super Top" compatibility
  usb: raw-gadget: report suspend, resume, reset, and disconnect events
  usb: raw-gadget: don't disable device if usb_ep_queue fails
  usb: raw-gadget: properly handle interrupted requests
  usb:cdnsp: remove TRB_FLUSH_ENDPOINT command
  usb: gadget: aspeed_udc: Convert to platform remove callback returning void
  dt-bindings: usb: fsa4480: Add compatible for OCP96011
  usb: typec: fsa4480: Add support to swap SBU orientation
  dt-bindings: usb: fsa4480: Add data-lanes property to endpoint
  usb: typec: tcpm: Fix NULL pointer dereference in tcpm_pd_svdm()
  Revert "dt-bindings: usb: Add bindings for multiport properties on DWC3 controller"
  Revert "dt-bindings: usb: qcom,dwc3: Add bindings for SC8280 Multiport"
  thunderbolt: Fix one kernel-doc comment
  usb: gadget: f_ncm: Always set current gadget in ncm_bind()
  usb: core: Remove duplicated check in usb_hub_create_port_device
  usb: typec: tcpm: Add additional checks for contaminant
  arm64: dts: rockchip: rk3588s: Add USB3 host controller
  usb: dwc3: add optional PHY interface clocks
  dt-bindings: usb: add rk3588 compatible to rockchip,dwc3
  ...
2023-11-03 16:00:42 -10:00
Wentong Wu
1034cc423f gpio: update Intel LJCA USB GPIO driver
This driver communicate with LJCA GPIO module with specific
protocol through interfaces exported by LJCA USB driver.
Update the driver according to LJCA USB driver's changes.

Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/1696833205-16716-5-git-send-email-wentong.wu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-11 11:33:38 +02:00
Bartosz Golaszewski
9790222d28 gpio: mockup: deprecate the old testing module
We have a much better alternative to the clunky old gpio-mockup. Don't
remove it just yet (there are tests depending on it out there) but make
Kconfig say that it should no longer be used in new projects.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2023-09-11 11:16:56 +02:00
William Breathitt Gray
0988ffa096 gpio: ws16c48: Migrate to the regmap API
The regmap API supports IO port accessors so we can take advantage of
regmap abstractions rather than handling access to the device registers
directly in the driver.

The WinSystems WS16C48 provides the following registers:

    Offset 0x0-0x5: Port 0-5 I/O
    Offset 0x6: Int_Pending
    Offset 0x7: Page/Lock
    Offset 0x8-0xA (Page 1): Pol_0-Pol_2
    Offset 0x8-0xA (Page 2): Enab_0-Enab_2
    Offset 0x8-0xA (Page 3): Int_ID0-Int_ID2

Port 0-5 I/O provides access to 48 lines of digital I/O across six
registers, each bit position corresponding to the respective line.
Writing a 1 to a respective bit position causes that output pin to sink
current, while writing a 0 to the same bit position causes that output
pin to go to a high-impedance state and allows it to be used an input.
Reads on a port report the inverted state (0 = high, 1 = low) of an I/O
pin when used in input mode. Interrupts are supported on Port 0-2.

Int_Pending is a read-only register that reports the combined state of
the INT_ID0 through INT_ID2 registers; an interrupt pending is indicated
when any of the low three bits are set.

The Page/Lock register provides the following bits:

    Bit 0-5: Port 0-5 I/O Lock
    Bit 6-7: Page 0-3 Selection

For Bits 0-5, writing a 1 to a respective bit position locks the output
state of the corresponding I/O port. Writing the page number to Bits 6-7
selects that respective register page for use.

Pol_0-Pol_2 are accessible when Page 1 is selected. Writing a 1 to a
respective bit position selects the rising edge detection interrupts for
that input line, while writing a 0 to the same bit position selects the
falling edge detection interrupts.

Enab_0-Enab_2 are accessible when Page 2 is selected. Writing a 1 to a
respective bit position enables interrupts for that input line, while
writing a 0 to that same bit position clears and disables interrupts for
that input line.

Int_ID0-Int_ID2 are accessible when Page 3 is selected. A respective bit
when read as a 1 indicates that an edge of the polarity set in the
corresponding polarity register was detected for the corresponding input
line. Writing any value to this register clears all pending interrupts
for the register.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/f59de81e80f7198bcfa9a15615c459c38b5d0e08.1680708357.git.william.gray@linaro.org/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-08-11 14:23:35 +02:00
William Breathitt Gray
1a200a3966 gpio: pcie-idio-24: Migrate to the regmap API
The regmap API supports IO port accessors so we can take advantage of
regmap abstractions rather than handling access to the device registers
directly in the driver.

For the PCIe-IDIO-24 series of devices, the following BARs are
available:

    BAR[0]: memory mapped PEX8311
    BAR[1]: I/O mapped PEX8311
    BAR[2]: I/O mapped card registers

There are 24 FET Output lines, 24 Isolated Input lines, and 8 TTL/CMOS
lines (which may be configured for either output or input). The GPIO
lines are exposed by the following card registers:

    Base +0x0-0x2 (Read/Write): FET Outputs
    Base +0xB (Read/Write): TTL/CMOS
    Base +0x4-0x6 (Read): Isolated Inputs
    Base +0x7 (Read): TTL/CMOS

In order for the device to support interrupts, the PLX PEX8311 internal
PCI wire interrupt and local interrupt input must first be enabled.

The following card registers for Change-Of-State may be used:

    Base +0x8-0xA (Read): COS Status Inputs
    Base +0x8-0xA (Write): COS Clear Inputs
    Base +0xB (Read): COS Status TTL/CMOS
    Base +0xB (Write): COS Clear TTL/CMOS
    Base +0xE (Read/Write): COS Enable

The COS Enable register is used to enable/disable interrupts and
configure the interrupt levels; each bit maps to a group of eight inputs
as described below:

    Bit 0: IRQ EN Rising Edge IN0-7
    Bit 1: IRQ EN Rising Edge IN8-15
    Bit 2: IRQ EN Rising Edge IN16-23
    Bit 3: IRQ EN Rising Edge TTL0-7
    Bit 4: IRQ EN Falling Edge IN0-7
    Bit 5: IRQ EN Falling Edge IN8-15
    Bit 6: IRQ EN Falling Edge IN16-23
    Bit 7: IRQ EN Falling Edge TTL0-7

An interrupt is asserted when a change-of-state matching the interrupt
level configuration respective for a particular group of eight inputs
with enabled COS is detected.

The COS Status registers may be read to determine which inputs have
changed; if interrupts were enabled, an IRQ will be generated for the
set bits in these registers. Writing the value read from the COS Status
register back to the respective COS Clear register will clear just those
interrupts.

Reviewed-by: Michael Walle <michael@walle.cc>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/3091e387b1d2eac011a1d84e493663aa2acf982e.1680708357.git.william.gray@linaro.org/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-08-11 14:23:33 +02:00
William Breathitt Gray
73d8f3efc5 gpio: pci-idio-16: Migrate to the regmap API
The regmap API supports IO port accessors so we can take advantage of
regmap abstractions rather than handling access to the device registers
directly in the driver. Migrate the pci-idio-16 module to the new
idio-16 library interface leveraging the gpio-regmap API.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/5ba5405c64aca984d5cf3bdbdffa04c325e5a147.1680618405.git.william.gray@linaro.org/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-08-11 14:23:31 +02:00
William Breathitt Gray
2c210c9a34 gpio: 104-idio-16: Migrate to the regmap API
The regmap API supports IO port accessors so we can take advantage of
regmap abstractions rather than handling access to the device registers
directly in the driver. Migrate the 104-idio-16 module to the new
idio-16 library interface leveraging the gpio-regmap API.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/1f24a1f18c9a9daa4983713e0a5b53e838d624a8.1680618405.git.william.gray@linaro.org/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-08-11 14:23:29 +02:00
William Breathitt Gray
db02247827 gpio: idio-16: Migrate to the regmap API
The regmap API supports IO port accessors so we can take advantage of
regmap abstractions rather than handling access to the device registers
directly in the driver.

By leveraging the regmap API, the idio-16 library is reduced to simply a
devm_idio_16_regmap_register() function and a configuration structure
struct idio_16_regmap_config.

Legacy functions and code will be removed once all consumers have
migrated to the new idio-16 library interface.

For IDIO-16 devices we have the following IRQ registers:

    Base Address +1 (Write): Clear Interrupt
    Base Address +2 (Read): Enable Interrupt
    Base Address +2 (Write): Disable Interrupt

An interrupt is asserted whenever a change-of-state is detected on any
of the inputs. Any write to 0x2 will disable interrupts, while any read
will enable interrupts. Interrupts are cleared by a write to 0x1.

For 104-IDIO-16 devices, there is no IRQ status register, so software
has to assume that if an interrupt is raised then it was for the
104-IDIO-16 device.

For PCI-IDIO-16 devices, there is an additional IRQ register:

    Base Address +6 (Read): Interrupt Status

Interrupt status can be read from 0x6 where bit 2 set indicates that an
IRQ has been generated.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/b45081958ab53dfa697f4a8b15f1bfba46718068.1680618405.git.william.gray@linaro.org/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-08-11 14:23:27 +02:00
Okan Sahin
659ad5f7ef gpio: ds4520: Add ADI DS4520 GPIO Expander Support
The DS4520 is a 9-bit nonvolatile (NV) I/O expander.
It offers users a digitally programmable alternative
to hardware jumpers and mechanical switches that are
being used to control digital logic node.

Signed-off-by: Okan Sahin <okan.sahin@analog.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-07-29 15:56:33 +02:00
William Breathitt Gray
92f7a35836 gpio: 104-dio-48e: Add Counter/Timer support
The 104-DIO-48E features an 8254 Counter/Timer chip providing three
counter/timers which can be used for frequency measurement, frequency
output, pulse width modulation, pulse width measurement, event count,
etc. The counter/timers use the same addresses as PPI 0 (addresses 0x0
to 0x3), so a raw_spinlock_t is used to synchronize operations between
the two regmap mappings to prevent clobbering.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-07-27 09:37:33 +02:00
Andy Shevchenko
55b4735382 gpio: ge: Enable COMPILE_TEST for the driver
Driver is so simple, yet there was a room for mistakes.
Reduce their appearance in the future by enabling COMPILE_TEST
option.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-07-27 09:33:12 +02:00
Samuel Holland
6b4c76ded3 gpio: sifive: Allow building the driver as a module
This can reduce the kernel image size in multiplatform configurations.

Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-07-25 12:00:42 +02:00
Andy Shevchenko
c9ab610e5c gpio: bcm-kona: Make driver OF-independent
There is nothing in the driver that requires OF APIs,
make the driver OF independent.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-07-19 13:25:49 +02:00
Linus Torvalds
e5476f57b3 gpio updates for v6.5
Core GPIO library:
 - remove unused symbols
 - don't spam the kernel log with messages about hogs
 - remove old sysfs API cruft
 - improve handling of GPIO masks
 
 New drivers
 - add a driver for the BlueField-3 GPIO controller
 - add GPIO support for the TPS65219 PMIC
 
 Driver improvements:
 - extend the gpio-aggregator driver to support ramp-up/ramp-down delay
 - remove unnecessary CONFIG_OF guards from gpio-aggregator
 - readability improvements in gpio-tangier
 - switch i2c drivers back to using probe() now that it's been converted in
   the i2c subsystem to not taking the id parameter
 - remove unused inclusions of of_gpio.h in several drivers
 - make pm ops static in gpio-davinci and fix a comment
 - use more devres in drivers to shrink and simplify the code
 - add missing include in gpio-sa1100
 - add HAS_IOPORT KConfig dependency where needed
 - add permissions checks before accessing pins in gpio-tegra186
 - convert the gpio-zynq driver to using immutable irqchips
 - preserve output settings set by the bootloader in gpio-mpc8xxx
 
 Selftests:
 - tweak the variable naming in script tests
 
 Device tree updates:
 - convert gpio-mmio and gpio-stmpe to YAML
 - add parsing of GPIO hogs to gpio-vf610
 - add bindings for the Cirrus EP93xx GPIO controller
 - add gpio-line-names property to the gpio-pca9570 bindings
 - extend the binding for x-powers,axp209 with another block
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Merge tag 'gpio-updates-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have two new drivers, some improvements to the core code, lots of
  different updates to existing GPIO drivers and some dt-bindings on
  top.

  There's nothing controversial in here and almost everything has been
  in next for more than a week (95% a lot longer than this). The only
  thing that has spent less time in next is a new driver so no risk of
  regressions.

  The single merge pulls in changes that remove all usage of global GPIO
  numbers from arch/arm/mach-omap.

  Core GPIO library:
   - remove unused symbols
   - don't spam the kernel log with messages about hogs
   - remove old sysfs API cruft
   - improve handling of GPIO masks

  New drivers:
   - add a driver for the BlueField-3 GPIO controller
   - add GPIO support for the TPS65219 PMIC

  Driver improvements:
   - extend the gpio-aggregator driver to support ramp-up/ramp-down
     delay
   - remove unnecessary CONFIG_OF guards from gpio-aggregator
   - readability improvements in gpio-tangier
   - switch i2c drivers back to using probe() now that it's been
     converted in the i2c subsystem to not taking the id parameter
   - remove unused inclusions of of_gpio.h in several drivers
   - make pm ops static in gpio-davinci and fix a comment
   - use more devres in drivers to shrink and simplify the code
   - add missing include in gpio-sa1100
   - add HAS_IOPORT KConfig dependency where needed
   - add permissions checks before accessing pins in gpio-tegra186
   - convert the gpio-zynq driver to using immutable irqchips
   - preserve output settings set by the bootloader in gpio-mpc8xxx

  Selftests:
   - tweak the variable naming in script tests

  Device tree updates:
   - convert gpio-mmio and gpio-stmpe to YAML
   - add parsing of GPIO hogs to gpio-vf610
   - add bindings for the Cirrus EP93xx GPIO controller
   - add gpio-line-names property to the gpio-pca9570 bindings
   - extend the binding for x-powers,axp209 with another block"

* tag 'gpio-updates-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (58 commits)
  of: unittest: drop assertions for GPIO hog messages
  gpiolib: Drop unused domain_ops memeber of GPIO IRQ chip
  gpio: synq: remove unused zynq_gpio_irq_reqres/zynq_gpio_irq_relres
  dt-bindings: gpio: gpio-vf610: Add parsing of hogs
  gpio: lpc18xx: Remove unused of_gpio.h inclusion
  gpio: xra1403: Remove unused of_gpio.h inclusion
  gpio: mpc8xxx: Remove unused of_gpio.h inclusion
  dt-bindings: gpio: Add Cirrus EP93xx
  gpio: mpc8xxx: latch GPIOs state on module load when configured as output
  selftests: gpio: gpio-sim: Use same variable name for sysfs pathname
  gpio: mlxbf3: Add gpio driver support
  gpio: delay: Remove duplicative functionality
  gpio: aggregator: Set up a parser of delay line parameters
  gpio: aggregator: Support delay for setting up individual GPIOs
  gpio: aggregator: Remove CONFIG_OF and of_match_ptr() protections
  dt-bindings: gpio: pca9570: add gpio-line-names property
  gpiolib: remove unused gpio_cansleep()
  gpio: tps65219: add GPIO support for TPS65219 PMIC
  gpio: zynq: fix zynqmp_gpio not an immutable chip warning
  gpio: davinci: make davinci_gpio_dev_pm_ops static
  ...
2023-06-29 10:11:10 -07:00
Asmaa Mnebhi
cd33f216d2 gpio: mlxbf3: Add gpio driver support
Add support for the BlueField-3 SoC GPIO driver.
This driver configures and handles GPIO interrupts. It also enables a user
to manipulate certain GPIO pins via libgpiod tools or other kernel drivers.
The usables pins are defined via the "gpio-reserved-ranges" property.

Signed-off-by: Asmaa Mnebhi <asmaa@nvidia.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-06-16 11:08:32 +02:00
Andy Shevchenko
8efe124702 gpio: delay: Remove duplicative functionality
Now that GPIO aggregator supports a delay line, drop the duplicative
functionality, i.e. the entire gpio-delay driver.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-06-16 11:02:11 +02:00
Jerome Neanne
57e30e00bd gpio: tps65219: add GPIO support for TPS65219 PMIC
Add support for TPS65219 PMICs GPIO interface.

3 GPIO pins:
- GPIO0 only is IO but input mode reserved for MULTI_DEVICE_ENABLE usage.
- GPIO1 and GPIO2 are Output only and referred as GPO1 and GPO2 in spec.

GPIO0 is statically configured as input or output prior to Linux boot.
it is used for MULTI_DEVICE_ENABLE function.
This setting is statically configured by NVM.
GPIO0 can't be used as a generic GPIO (specification Table 8-34).
It's either a GPO when MULTI_DEVICE_EN=0 or a GPI when MULTI_DEVICE_EN=1.

Datasheet describes specific usage for non standard GPIO.

Datasheet: https://www.ti.com/lit/ds/symlink/tps65219.pdf
Co-developed-by: Jonathan Cormier <jcormier@criticallink.com>
Signed-off-by: Jonathan Cormier <jcormier@criticallink.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jerome Neanne <jneanne@baylibre.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-06-13 14:49:56 +02:00
Alexander Stein
7ce8d39e34 gpio: Fix dependency for gpio-delay
This driver relies on OF_GPIO features, add a dependency to Kconfig.

Fixes: cf5dec80c4 ("gpio: Add gpio delay driver")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-06-05 09:36:52 +02:00
Alexander Stein
cf5dec80c4 gpio: Add gpio delay driver
This driver implements a GPIO enable/disable delay. It supports a list
of GPIO outputs, which ramp-up/ramp-down delay can be specified at
consumer location.
The main purpose is to address external, passive delays upon line
voltage changes.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-06-02 18:29:15 +02:00
Henning Schild
3002b8642f gpio-f7188x: fix chip name and pin count on Nuvoton chip
In fact the device with chip id 0xD283 is called NCT6126D, and that is
the chip id the Nuvoton code was written for. Correct that name to avoid
confusion, because a NCT6116D in fact exists as well but has another
chip id, and is currently not supported.

The look at the spec also revealed that GPIO group7 in fact has 8 pins,
so correct the pin count in that group as well.

Fixes: d0918a84af ("gpio-f7188x: Add GPIO support for Nuvoton NCT6116")
Reported-by: Xing Tong Wu <xingtong.wu@siemens.com>
Signed-off-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-05-23 10:47:41 +02:00
Niklas Schnelle
2c99754ea0 gpio: add HAS_IOPORT dependencies
In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
not being declared. We thus need to add HAS_IOPORT as dependency for
those drivers using them.

Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-05-17 16:15:10 +02:00
Linus Torvalds
3af49062b0 - New Drivers
- Add support for  Renesas RZ/G2L MTU3
 
  - New Device Support
    - Add support for Lenovo Yoga Book X90F to Intel CHT WC
    - Add support for MAX5970 and MAX5978 to Simple MFD (I2C)
    - Add support for Meteor Lake PCH-S LPSS PCI to Intel LPSS PCI
    - Add support for AXP15060 PMIC to X-Powers PMIC collection
 
  - Remove Device Support
    - Remove support for Samsung 5M8751 and S5M8763 PMIC devices
 
  - New Functionality
    - Convert deprecated QCOM IRQ Chip to config registers
    - Add support for 32-bit address spaces to Renesas SMUs
 
  - Fix-ups
    - Make use of APIs / MACROs designed to simplify and demystify
    - Add / improve Device Tree bindings
    - Memory saving struct layout optimisations
    - Remove old / deprecated functionality
    - Factor out unassigned register addresses from ranges
    - Trivial: Spelling fixes, renames and coding style fixes
    - Rid 'defined but not used' warnings
    - Remove ineffective casts and pointer stubs
 
  - Bug Fixes
    - Fix incorrectly non-inverted mask/unmask IRQs on QCOM platforms
    - Remove MODULE_*() helpers from non-tristate drivers
    - Do not attempt to use out-of-range memory addresses associated with io_base
    - Provide missing export helpers
    - Fix remap bulk read optimisation fallout
    - Fix memory leak issues in error paths
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Merge tag 'mfd-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Drivers:
   - Add support for  Renesas RZ/G2L MTU3

  New Device Support:
   - Add support for Lenovo Yoga Book X90F to Intel CHT WC
   - Add support for MAX5970 and MAX5978 to Simple MFD (I2C)
   - Add support for Meteor Lake PCH-S LPSS PCI to Intel LPSS PCI
   - Add support for AXP15060 PMIC to X-Powers PMIC collection

  Remove Device Support:
   - Remove support for Samsung 5M8751 and S5M8763 PMIC devices

  New Functionality:
   - Convert deprecated QCOM IRQ Chip to config registers
   - Add support for 32-bit address spaces to Renesas SMUs

  Fix-ups:
   - Make use of APIs / MACROs designed to simplify and demystify
   - Add / improve Device Tree bindings
   - Memory saving struct layout optimisations
   - Remove old / deprecated functionality
   - Factor out unassigned register addresses from ranges
   - Trivial: Spelling fixes, renames and coding style fixes
   - Rid 'defined but not used' warnings
   - Remove ineffective casts and pointer stubs

  Bug Fixes:
   - Fix incorrectly non-inverted mask/unmask IRQs on QCOM platforms
   - Remove MODULE_*() helpers from non-tristate drivers
   - Do not attempt to use out-of-range memory addresses associated with io_base
   - Provide missing export helpers
   - Fix remap bulk read optimisation fallout
   - Fix memory leak issues in error paths"

* tag 'mfd-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (88 commits)
  dt-bindings: mfd: ti,j721e-system-controller: Add SoC chip ID
  leds: bd2606mvv: Driver for the Rohm 6 Channel i2c LED driver
  dt-bindings: mfd: qcom,spmi-pmic: Document flash LED controller
  dt-bindings: mfd: x-powers,axp152: Document the AXP15060 variant
  mfd: axp20x: Add support for AXP15060 PMIC
  dt-bindings: mfd: x-powers,axp152: Document the AXP313a variant
  counter: rz-mtu3-cnt: Unlock on error in rz_mtu3_count_ceiling_write()
  dt-bindings: mfd: dlg,da9063: Document voltage monitoring
  dt-bindings: mfd: stm32: Remove unnecessary blank lines
  dt-bindings: mfd: qcom,spmi-pmic: Use generic ADC node name in examples
  dt-bindings: mfd: syscon: Add nuvoton,ma35d1-sys compatible
  MAINTAINERS: Add entries for Renesas RZ/G2L MTU3a counter driver
  counter: Add Renesas RZ/G2L MTU3a counter driver
  Documentation: ABI: sysfs-bus-counter: add cascade_counts_enable and external_input_phase_clock_select
  mfd: Add Renesas RZ/G2L MTU3a core driver
  dt-bindings: timer: Document RZ/G2L MTU3a bindings
  mfd: rsmu_i2c: Convert to i2c's .probe_new() again
  mfd: intel-lpss: Add Intel Meteor Lake PCH-S LPSS PCI IDs
  mfd: dln2: Fix memory leak in dln2_probe()
  mfd: axp20x: Fix axp288 writable-ranges
  ...
2023-05-02 10:41:31 -07:00
Ye Xiang
c5a4b6fd31 gpio: Add support for Intel LJCA USB GPIO driver
This patch implements the GPIO function of Intel USB-I2C/GPIO/SPI adapter
device named "La Jolla Cove Adapter" (LJCA). It communicate with LJCA
GPIO module with specific protocol through interfaces exported by LJCA USB
driver.

Signed-off-by: Ye Xiang <xiang.ye@intel.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230225140118.2037220-3-xiang.ye@intel.com
2023-04-26 11:40:29 +01:00
Linus Torvalds
2c96606a0f gpio updates for v6.4-rc1
New drivers:
 - add a driver for the Loongson GPIO controller
 - add a driver for the fxl6408 I2C GPIO expander
 - add a GPIO module containing code common for Intel Elkhart Lake and
   Merrifield platforms
 - add a driver for the Intel Elkhart Lake platform reusing the code from
   the intel tangier library
 
 GPIOLIB core:
 - GPIO ACPI improvements
 - simplify gpiochip_add_data_with_keys() fwnode handling
 - cleanup header inclusions (remove unneeded ones, order the rest
   alphabetically)
 - remove duplicate code (reuse krealloc() instead of open-coding it, drop
   a duplicated check in gpiod_find_and_request())
 - reshuffle the code to remove unnecessary forward declarations
 - coding style cleanups and improvements
 - add a helper for accessing device fwnodes
 - small updates in docs
 
 Driver improvements:
 - convert all remaining GPIO irqchip drivers to using immutable irqchips
 - drop unnecessary of_match_ptr() macro expansions
 - shrink the code in gpio-merrifield significantly by reusing the code from
   gpio-tangier + minor tweaks to the driver code
 - remove MODULE_LICENSE() from drivers that can only be built-in
 - add device-tree support to gpio-loongson1
 - use new regmap features in gpio-104-dio-48e and gpio-pcie-idio-24
 - minor tweaks and fixes to gpio-xra1403, gpio-sim, gpio-tegra194, gpio-omap,
   gpio-aspeed, gpio-raspberrypi-exp
 - shrink code in gpio-ich and gpio-pxa
 - Kconfig tweak for gpio-pmic-eic-sprd
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Merge tag 'gpio-updates-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have some new drivers, significant refactoring of existing intel
  platforms, lots of improvements all around, mass conversion to using
  immutable irqchips by drivers that had not been converted individually
  yet and some changes in the core library code.

  Summary:

  New drivers:
   - add a driver for the Loongson GPIO controller
   - add a driver for the fxl6408 I2C GPIO expander
   - add a GPIO module containing code common for Intel Elkhart Lake and
     Merrifield platforms
   - add a driver for the Intel Elkhart Lake platform reusing the code
     from the intel tangier library

  GPIOLIB core:
   - GPIO ACPI improvements
   - simplify gpiochip_add_data_with_keys() fwnode handling
   - cleanup header inclusions (remove unneeded ones, order the rest
     alphabetically)
   - remove duplicate code (reuse krealloc() instead of open-coding it,
     drop a duplicated check in gpiod_find_and_request())
   - reshuffle the code to remove unnecessary forward declarations
   - coding style cleanups and improvements
   - add a helper for accessing device fwnodes
   - small updates in docs

  Driver improvements:
   - convert all remaining GPIO irqchip drivers to using immutable
     irqchips
   - drop unnecessary of_match_ptr() macro expansions
   - shrink the code in gpio-merrifield significantly by reusing the
     code from gpio-tangier + minor tweaks to the driver code
   - remove MODULE_LICENSE() from drivers that can only be built-in
   - add device-tree support to gpio-loongson1
   - use new regmap features in gpio-104-dio-48e and gpio-pcie-idio-24
   - minor tweaks and fixes to gpio-xra1403, gpio-sim, gpio-tegra194,
     gpio-omap, gpio-aspeed, gpio-raspberrypi-exp
   - shrink code in gpio-ich and gpio-pxa
   - Kconfig tweak for gpio-pmic-eic-sprd"

* tag 'gpio-updates-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (99 commits)
  gpio: gpiolib: Simplify gpiochip_add_data_with_key() fwnode
  gpiolib: Add gpiochip_set_data() helper
  gpiolib: Move gpiochip_get_data() higher in the code
  gpiolib: Check array_info for NULL only once in gpiod_get_array()
  gpiolib: Replace open coded krealloc()
  gpiolib: acpi: Add a ignore wakeup quirk for Clevo NL5xNU
  gpiolib: acpi: Move ACPI device NULL check to acpi_get_driver_gpio_data()
  gpiolib: acpi: use the fwnode in acpi_gpiochip_find()
  gpio: mm-lantiq: Fix typo in the newly added header filename
  sh: mach-x3proto: Add missing #include <linux/gpio/driver.h>
  powerpc/40x: Add missing select OF_GPIO_MM_GPIOCHIP
  gpio: xlp: Convert to immutable irq_chip
  gpio: xilinx: Convert to immutable irq_chip
  gpio: xgs-iproc: Convert to immutable irq_chip
  gpio: visconti: Convert to immutable irq_chip
  gpio: tqmx86: Convert to immutable irq_chip
  gpio: thunderx: Convert to immutable irq_chip
  gpio: stmpe: Convert to immutable irq_chip
  gpio: siox: Convert to immutable irq_chip
  gpio: rda: Convert to immutable irq_chip
  ...
2023-04-25 17:18:18 -07:00
Bartosz Golaszewski
f09673770e intel-gpio for v6.4-2
* Fixed suspend issue on Clevo NL5xNU
 * Split a new Intel Tangier (library) driver for current and new platforms
 * Introduced a new driver for Intel Elkhart Lake PSE GPIO (see also above)
 * Contained a few fixes for the previous of_gpio.h cleanup
 * Miscellaneous cleanups here and there
 
 The following is an automated git shortlog grouped by driver:
 
 elkhartlake:
  -  Introduce Intel Elkhart Lake PSE GPIO
 
 gpiolib:
  -  acpi: Add a ignore wakeup quirk for Clevo NL5xNU
  -  acpi: Move ACPI device NULL check to acpi_get_driver_gpio_data()
  -  acpi: use the fwnode in acpi_gpiochip_find()
 
 ich:
  -  Use devm_gpiochip_add_data() to simplify remove path
 
 merrifield:
  -  Utilise temporary variable for struct device
  -  Use dev_err_probe()
  -  Adapt to Intel Tangier GPIO driver
 
 mips:
  -  ar7: include linux/gpio/driver.h
 
 mm-lantiq:
  -  Fix typo in the newly added header filename
 
 powerpc/40x:
  -  Add missing select OF_GPIO_MM_GPIOCHIP
 
 sh:
  -  mach-x3proto: Add missing #include <linux/gpio/driver.h>
 
 tangier:
  -  Introduce Intel Tangier GPIO driver
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Merge tag 'intel-gpio-v6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into gpio/for-next

intel-gpio for v6.4-2

* Fixed suspend issue on Clevo NL5xNU
* Split a new Intel Tangier (library) driver for current and new platforms
* Introduced a new driver for Intel Elkhart Lake PSE GPIO (see also above)
* Contained a few fixes for the previous of_gpio.h cleanup
* Miscellaneous cleanups here and there

The following is an automated git shortlog grouped by driver:

elkhartlake:
 -  Introduce Intel Elkhart Lake PSE GPIO

gpiolib:
 -  acpi: Add a ignore wakeup quirk for Clevo NL5xNU
 -  acpi: Move ACPI device NULL check to acpi_get_driver_gpio_data()
 -  acpi: use the fwnode in acpi_gpiochip_find()

ich:
 -  Use devm_gpiochip_add_data() to simplify remove path

merrifield:
 -  Utilise temporary variable for struct device
 -  Use dev_err_probe()
 -  Adapt to Intel Tangier GPIO driver

mips:
 -  ar7: include linux/gpio/driver.h

mm-lantiq:
 -  Fix typo in the newly added header filename

powerpc/40x:
 -  Add missing select OF_GPIO_MM_GPIOCHIP

sh:
 -  mach-x3proto: Add missing #include <linux/gpio/driver.h>

tangier:
 -  Introduce Intel Tangier GPIO driver
2023-04-06 10:39:45 +02:00
Emanuele Ghidoli
03810031c9 gpio: fxl6408: add I2C GPIO expander driver
Add minimal driver for Fairchild FXL6408 8-bit I2C-controlled GPIO expander
using the generic regmap based GPIO driver (GPIO_REGMAP).

The driver implements setting the GPIO direction, reading inputs
and writing outputs.

In addition to that the FXL6408 has the following functionalities:
- allows to monitor input ports for data transitions with an interrupt pin
- all inputs can be configured with pull-up or pull-down resistors

Datasheet: https://www.onsemi.com/download/data-sheet/pdf/fxl6408-d.pdf
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Co-developed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
[Bartosz: order includes alphabetically]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-03-15 13:49:18 +01:00
Yinbo Zhu
b96eb88f59 gpio: loongson: fixup the warning about OF_GPIO direct dependencies
WARNING: unmet direct dependencies detected for OF_GPIO
  Depends on [n]: GPIOLIB [=y] && OF [=n] && HAS_IOMEM [=y]
  Selected by [y]:
  - GPIO_LOONGSON_64BIT [=y] && GPIOLIB [=y] && HAS_IOMEM [=y] && (LOONGARCH || COMPILE_TEST [=y])

Signed-off-by: Yinbo Zhu <zhuyinbo@loongson.cn>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202303091728.UUe6LWye-lkp@intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-03-09 15:49:48 +01:00
Bartosz Golaszewski
aea92b54ee intel-gpio for v6.4-1
* Remove some of the legacy APIs that are not used anymore
 * Clean up headers in the GPIO library and drivers
 
 The following is an automated git shortlog grouped by driver:
 
 aggregator:
  -  Add missing header(s)
 
 ARM:
  -  s3c64xx: Use the right include
  -  orion/gpio: Use the right include
 
 gpiolib:
  -  Clean up headers
  -  Group forward declarations in consumer.h
  -  Deduplicate forward declarations in consumer.h
  -  Drop unused forward declaration from driver.h
  -  split of_mm_gpio_chip out of linux/of_gpio.h
  -  split linux/gpio/driver.h out of linux/gpio.h
  -  remove legacy gpio_export()
  -  remove gpio_set_debounce()
  -  remove asm-generic/gpio.h
  -  coldfire: remove custom asm/gpio.h
  -  remove empty asm/gpio.h files
  -  Make the legacy <linux/gpio.h> consumer-only
 
 hte:
  -  tegra-194: Use proper includes
 
 reg:
  -  Add missing header(s)
 
 regmap:
  -  Add missing header(s)
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Merge tag 'intel-gpio-v6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into gpio/for-next

intel-gpio for v6.4-1

* Remove some of the legacy APIs that are not used anymore
* Clean up headers in the GPIO library and drivers

The following is an automated git shortlog grouped by driver:

aggregator:
 -  Add missing header(s)

ARM:
 -  s3c64xx: Use the right include
 -  orion/gpio: Use the right include

gpiolib:
 -  Clean up headers
 -  Group forward declarations in consumer.h
 -  Deduplicate forward declarations in consumer.h
 -  Drop unused forward declaration from driver.h
 -  split of_mm_gpio_chip out of linux/of_gpio.h
 -  split linux/gpio/driver.h out of linux/gpio.h
 -  remove legacy gpio_export()
 -  remove gpio_set_debounce()
 -  remove asm-generic/gpio.h
 -  coldfire: remove custom asm/gpio.h
 -  remove empty asm/gpio.h files
 -  Make the legacy <linux/gpio.h> consumer-only

hte:
 -  tegra-194: Use proper includes

reg:
 -  Add missing header(s)

regmap:
 -  Add missing header(s)
2023-03-08 11:04:32 +01:00
Pandith N
9409d8cf78 gpio: elkhartlake: Introduce Intel Elkhart Lake PSE GPIO
This driver adds support for Intel Elkhart Lake PSE GPIO controller,
using Intel Tangier as a library driver.

Signed-off-by: Pandith N <pandith.n@intel.com>
Co-developed-by: Raag Jadav <raag.jadav@intel.com>
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Co-developed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2023-03-06 17:10:46 +02:00
Pandith N
34840be534 gpio: merrifield: Adapt to Intel Tangier GPIO driver
Make use of Intel Tangier GPIO as a library driver for Merrifield.

Signed-off-by: Pandith N <pandith.n@intel.com>
Co-developed-by: Raag Jadav <raag.jadav@intel.com>
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Co-developed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2023-03-06 17:10:46 +02:00
Pandith N
d2c19e89e0 gpio: tangier: Introduce Intel Tangier GPIO driver
Intel Elkhart Lake and Merrifield platforms have same GPIO IP.
Intel Tangier implements the common GPIO functionalities for both
Elkhart Lake and Merrifield platforms.

Signed-off-by: Pandith N <pandith.n@intel.com>
Co-developed-by: Raag Jadav <raag.jadav@intel.com>
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Co-developed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2023-03-06 17:10:46 +02:00
Arnd Bergmann
a99cc66807 gpiolib: split of_mm_gpio_chip out of linux/of_gpio.h
This is a rarely used feature that has nothing to do with the
client-side of_gpio.h.

Split it out with a separate header file and Kconfig option
so it can be removed on its own timeline aside from removing
the of_gpio consumer interfaces.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2023-03-06 12:33:01 +02:00
Arnd Bergmann
94d20f7d67 gpiolib: coldfire: remove custom asm/gpio.h
Now that coldfire is the only user of a custom asm/gpio.h, it seems
better to remove this as well, and have the same interface everywhere.

For the gpio_get_value()/gpio_set_value()/gpio_to_irq(), gpio_cansleep()
functions, the custom version is only a micro-optimization to inline the
function for constant GPIO numbers. However, in the coldfire defconfigs,
I was unable to find a single instance where this micro-optimization
was even used, and according to Geert the only user appears to be the
QSPI chip that is disabled everywhere.

The custom gpio_request_one() function is even less useful, as it is
guarded by an #ifdef that is never true.

Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2023-03-06 12:33:01 +02:00
Randy Dunlap
d49765b5f4 gpio: GPIO_REGMAP: select REGMAP instead of depending on it
REGMAP is a hidden (not user visible) symbol. Users cannot set it
directly thru "make *config", so drivers should select it instead of
depending on it if they need it.

Consistently using "select" or "depends on" can also help reduce
Kconfig circular dependency issues.

Therefore, change the use of "depends on REGMAP" to "select REGMAP".

Fixes: ebe363197e ("gpio: add a reusable generic gpio_chip using regmap")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Michael Walle <michael@walle.cc>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: linux-gpio@vger.kernel.org
Acked-by: Michael Walle <michael@walle.cc>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-03-06 11:16:56 +01:00
Linus Walleij
63de20ca24 gpio: pmic-eic-sprd: Move Kconfig to MFD expanders
The Spreadtrum PMIC EIC interrupt controller is part of an
MFD expander and should thus be in the MFD GPIO expander
menu section with the rest. Move it.

Cc: Cixi Geng <cixi.geng1@unisoc.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-03-06 10:51:02 +01:00
Yinbo Zhu
7944d3b7fe gpio: loongson: add gpio driver support
The Loongson platforms GPIO controller contains 60 GPIO pins in total,
4 of which are dedicated GPIO pins, and the remaining 56 are reused
with other functions. Each GPIO can set input/output and has the
interrupt capability.

This driver added support for Loongson GPIO controller and support to
use DTS or ACPI to descibe GPIO device resources.

Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Hongchen Zhang <zhanghongchen@loongson.cn>
Signed-off-by: Liu Peibao <liupeibao@loongson.cn>
Signed-off-by: Juxin Gao <gaojuxin@loongson.cn>
Signed-off-by: Yinbo Zhu <zhuyinbo@loongson.cn>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-03-06 10:44:28 +01:00
Linus Torvalds
17bbc46fc9 gpio updates for v6.3
Core GPIOLIB:
 - drop several OF interfaces after moving a significant part of the code to
   using software nodes
 - remove more interfaces referring to the global GPIO numberspace that we're
   getting rid of
 - improvements in the gpio-regmap library
 - add helper for GPIO device reference counting
 - remove unused APIs
 - minor tweaks like sorting headers alphabetically
 
 Extended support in existing drivers:
 - add support for Tegra 234 PMC to gpio-tegra186
 
 Driver improvements:
 - migrate the 104-dio/idi family of drivers to using the regmap-irq API
 - migrate gpio-i8255 and gpio-mm to the GPIO regmap API
 - clean-ups in gpio-pca953x
 - remove duplicate assignments of of_gpio_n_cells in gpio-davinci, gpio-ge,
   gpio-xilinx, gpio-zevio and gpio-wcd934x
 - improvements to gpio-pcf857x: implement get/set_multiple callbacks, use
   generic device properties instead of OF + minor tweaks
 - fix OF-related header includes and Kconfig dependencies in gpio-zevio
 - dynamically allocate the GPIO base in gpio-omap
 - use a dedicated printf specifier for printing fwnode info in gpio-sim
 - use dev_name() for the GPIO chip label in gpio-vf610
 - other minor tweaks and fixes
 
 Documentation:
 - remove mentions of legacy API from comments in various places
 - convert the DT binding documents to YAML schema for Fujitsu MB86S7x, Unisoc
   GPIO and Unisoc EIC
 - document the Unisoc UMS512 controller in DT bindings
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Merge tag 'gpio-updates-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "A rather small update, there are no new drivers, just improvements and
  refactoring in existing ones.

  Thanks to migrating of several drivers to using generalized APIs and
  dropping of OF interfaces in favor of using software nodes we're
  actually removing more code than we're adding.

  Core GPIOLIB:
   - drop several OF interfaces after moving a significant part of the
     code to using software nodes
   - remove more interfaces referring to the global GPIO numberspace
     that we're getting rid of
   - improvements in the gpio-regmap library
   - add helper for GPIO device reference counting
   - remove unused APIs
   - minor tweaks like sorting headers alphabetically

  Extended support in existing drivers:
   - add support for Tegra 234 PMC to gpio-tegra186

  Driver improvements:
   - migrate the 104-dio/idi family of drivers to using the regmap-irq
     API
   - migrate gpio-i8255 and gpio-mm to the GPIO regmap API
   - clean-ups in gpio-pca953x
   - remove duplicate assignments of of_gpio_n_cells in gpio-davinci,
     gpio-ge, gpio-xilinx, gpio-zevio and gpio-wcd934x
   - improvements to gpio-pcf857x: implement get/set_multiple callbacks,
     use generic device properties instead of OF + minor tweaks
   - fix OF-related header includes and Kconfig dependencies in
     gpio-zevio
   - dynamically allocate the GPIO base in gpio-omap
   - use a dedicated printf specifier for printing fwnode info in
     gpio-sim
   - use dev_name() for the GPIO chip label in gpio-vf610
   - other minor tweaks and fixes

  Documentation:
   - remove mentions of legacy API from comments in various places
   - convert the DT binding documents to YAML schema for Fujitsu
     MB86S7x, Unisoc GPIO and Unisoc EIC
   - document the Unisoc UMS512 controller in DT bindings"

* tag 'gpio-updates-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (54 commits)
  gpio: sim: Use %pfwP specifier instead of calling fwnode API directly
  gpio: tegra186: remove unneeded loop in tegra186_gpio_init_route_mapping()
  gpiolib: of: Move enum of_gpio_flags to its only user
  gpio: mvebu: Use IS_REACHABLE instead of IS_ENABLED for CONFIG_PWM
  gpio: zevio: Add missing header
  gpio: Get rid of gpio_to_chip()
  gpio: pcf857x: Drop unneeded explicit casting
  gpio: pcf857x: Make use of device properties
  gpio: pcf857x: Get rid of legacy platform data
  gpio: rockchip: Do not mention legacy API in the code
  gpio: wcd934x: Remove duplicate assignment of of_gpio_n_cells
  gpio: zevio: Use proper headers and drop OF_GPIO dependency
  gpio: zevio: Remove duplicate assignment of of_gpio_n_cells
  gpio: xilinx: Remove duplicate assignment of of_gpio_n_cells
  dt-bindings: gpio: Add compatible string for Unisoc UMS512
  dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml
  dt-bindings: gpio: Convert Unisoc GPIO controller binding to yaml
  gpio: ge: Remove duplicate assignment of of_gpio_n_cells
  gpio: davinci: Remove duplicate assignment of of_gpio_n_cells
  gpio: omap: use dynamic allocation of base
  ...
2023-02-22 11:01:17 -08:00
Linus Torvalds
ff0c7e1862 ARM: unused boardfile removal for 6.3
This is a follow-up to the deprecation of most of the old-style board
 files that was merged in linux-6.0, removing them for good.
 
 This branch is almost exclusively dead code removal based on those
 annotations. Some device driver removals went through separate subsystem
 trees, but the majority is in the same branch, in order to better handle
 dependencies between the patches and avoid breaking bisection.
 
 Unfortunately that leads to merge conflicts against other changes in the
 subsystem trees, but they should all be trivial to resolve by removing
 the files.
 
 See commit 7d0d3fa733 ("Merge tag 'arm-boardfiles-6.0' of
 git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc") for the
 description of which machines were marked unused and are now removed. The
 only removals that got postponed are Terastation WXL (mv78xx0) and
 Jornada720 (StrongARM1100), which turned out to still have potential
 users.
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Merge tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC boardfile updates from Arnd Bergmann
 "Unused boardfile removal for 6.3

  This is a follow-up to the deprecation of most of the old-style board
  files that was merged in linux-6.0, removing them for good.

  This branch is almost exclusively dead code removal based on those
  annotations. Some device driver removals went through separate
  subsystem trees, but the majority is in the same branch, in order to
  better handle dependencies between the patches and avoid breaking
  bisection.

  Unfortunately that leads to merge conflicts against other changes in
  the subsystem trees, but they should all be trivial to resolve by
  removing the files.

  See commit 7d0d3fa733 ("Merge tag 'arm-boardfiles-6.0' of
  git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc") for the
  description of which machines were marked unused and are now removed.

  The only removals that got postponed are Terastation WXL (mv78xx0) and
  Jornada720 (StrongARM1100), which turned out to still have potential
  users"

* tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (91 commits)
  mmc: omap: drop TPS65010 dependency
  ARM: pxa: restore mfp-pxa320.h
  usb: ohci-omap: avoid unused-variable warning
  ARM: debug: remove references in DEBUG_UART_8250_SHIFT to removed configs
  ARM: s3c: remove obsolete s3c-cpu-freq header
  MAINTAINERS: adjust SAMSUNG SOC CLOCK DRIVERS after s3c24xx support removal
  MAINTAINERS: update file entries after arm multi-platform rework and mach-pxa removal
  ARM: remove CONFIG_UNUSED_BOARD_FILES
  mfd: remove htc-pasic3 driver
  w1: remove ds1wm driver
  usb: remove ohci-tmio driver
  fbdev: remove w100fb driver
  fbdev: remove tmiofb driver
  mmc: remove tmio_mmc driver
  mfd: remove ucb1400 support
  mfd: remove toshiba tmio drivers
  rtc: remove v3020 driver
  power: remove pda_power supply driver
  ASoC: pxa: remove unused board support
  pcmcia: remove unused pxa/sa1100 drivers
  ...
2023-02-20 15:28:57 -08:00
Linus Walleij
2f43f6020c gpio: mlxbf2: select GPIOLIB_IRQCHIP
This driver uncondictionally uses the GPIOLIB_IRQCHIP so
select it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-02-15 16:34:54 +01:00