u-boot.git/drivers/gpio, branch master

gpio: renesas: Pass struct udevice to rcar_gpio_set_direction()

2021-05-21T13:00:17+00:00

Pass struct udevice to rcar_gpio_set_direction() in preparation of
quirk handling in rcar_gpio_set_direction(). No functional change.

Signed-off-by: Marek Vasut

dm: gpio: Fix gpio_get_list_count failing with livetree

2021-05-04T11:57:18+00:00

of_parse_phandle_with_args (called by dev_read_phandle_with_args) does not
support getting the length of a phandle list by using the index -1.
Instead, use dev_count_phandle_with_args which supports exactly this
use-case.

Fixes: 8558217153 ("gpio: Convert to use APIs which support live DT")

Signed-off-by: Sean Anderson 
Reviewed-by: Simon Glass

gpio: atmel_pio4: add support for sama7g5 pio4 version with 5 banks

2021-04-19T07:38:49+00:00

Add support for sama7g5 pinctrl variant, with 5 banks with a degraded
8 line only 5th bank.
Based on Linux Kernel implementation.

Signed-off-by: Eugen Hristev

gpio: Drop dm_gpio_set_dir()

2021-04-12T21:45:40+00:00

This function is not used. Drop it.

Signed-off-by: Simon Glass 
Reviewed-by: Patrick Delaunay

x86: Probe device if needed in intel_gpio_xlate()

2021-03-27T00:59:36+00:00

The Intel GPIO binding allows GPIOs to be globally numbered, so that it
does not matter which GPIO bank is specified in the device tree. This is
convenient and avoid confusion since the banks do not have the same number
of GPIOs and the numbering is not sequential.

The GPIO uclass ensures that the device mentioned in the devicetree
binding is probed. It is fine for the driver to update gpio_desc to point
to a different driver, but this may not have been probed. If it has not
been, then it cannot be claimed since there is no uclass data.

We could handle this in the GPIO uclass but so far it is an unusual
situation so it is probably not worth the extra code. Handle this case in
the GPIO driver by probing the selected device if necessary.

Signed-off-by: Simon Glass

Merge tag 'v2021.04-rc4' into next

2021-03-15T16:15:38+00:00

Prepare v2021.04-rc4

gpio: mpc8xxx: Support controller register physical address beyond 32-bit

2021-03-05T04:55:43+00:00

dev_read_addr_size_index() returns fdt_addr_t which might be a
64-bit physical address. This might be true for some 85xx SoCs
whose CCSBAR is mapped beyond 4 GiB.

Signed-off-by: Bin Meng 
Reviewed-by: Priyanka Jain

gpio: Add a way to read 3-way strapping pins

2021-03-03T20:40:47+00:00

Using the internal vs. external pull resistors it is possible to get
27 different combinations from 3 strapping pins. Add an implementation
of this.

This involves updating the sandbox GPIO driver to model external and
(weaker) internal pull resistors. The get_value() method now takes account
of what is driving a pin:

   sandbox: GPIOD_EXT_DRIVEN - in which case GPIO_EXT_HIGH provides the
          value
   outside source - in which case GPIO_EXT_PULL_UP/DOWN indicates the
          external state and we work the final state using those flags and
          the internal GPIOD_PULL_UP/DOWN flags

Of course the outside source does not really exist in sandbox. We are just
modelling it for test purpose.

Signed-off-by: Simon Glass

gpio: Define the log category in the uclass

2021-03-03T20:40:11+00:00

This uses log_debug(), etc. but does not define the category. Fix this.

Signed-off-by: Simon Glass

gpio: sandbox: Track whether a GPIO is driven

2021-03-03T20:40:11+00:00

Add a new flag to keep track of whether sandbox is driving the pin, or
whether it is expecting an input signal. If it is driving, then the value
of the pin is the value being driven (0 or 1). If not driving, then we
consider the value 0, since we don't currently handle things like pull-ups
yet.

Signed-off-by: Simon Glass 
Reviewed-by: Patrick Delaunay