We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added
that line "just in case" during development and never dropped it.
Signed-off-by: Tom Rini <trini@konsulko.com>
At present dtc produces these warnings when compiling sandbox:
arch/sandbox/dts/test.dtb: Warning (gpios_property):
Could not get phandle node for /base-gpios:num-gpios(cell 0)
arch/sandbox/dts/test.dtb: Warning (gpios_property):
Missing property '#gpio-cells' in node /reset-ctl or bad phandle
(referred from /extra-gpios:num-gpios[0])
Both are due to it assuming that the 'num-gpios' property holds a phandle
pointing to a GPIO node.
To avoid these warnings, rename the sandbox property so that it does not
include the string 'gpios'.
Signed-off-by: Simon Glass <sjg@chromium.org>
Move the main part of the GPIO request function into a separate function
so that it can be used by the live tree function when added. Update the
xlate method to use a node reference.
Update all GPIO drivers to handle the modified xlate() method.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add some tests for the new open drain setting feature of the GPIO
uclass, and extend the capabilities of the sandbox GPIO driver
accordingly.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: York Sun <york.sun@nxp.com>
Add a convenience function to access the private data that a uclass stores
for each of its devices. Convert over most existing uses for consistency
and to provide an example for others.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present U-Boot sort-of supports the standard way of reading GPIOs from
device tree nodes, but the support is incomplete, a bit clunky and only
works for GPIO bindings where #gpio-cells is 2.
Add new functions to request GPIOs, taking full account of the device
tree binding. These permit requesting a GPIO with a simple call like:
gpio_request_by_name(dev, "cd-gpios", 0, &desc, GPIOD_IS_IN);
This will request the GPIO, looking at the device's node which might be
this, for example:
cd-gpios = <&gpio TEGRA_GPIO(B, 3) GPIO_ACTIVE_LOW>;
The GPIO will be set to input mode in this case and polarity will be
honoured by the GPIO calls.
It is also possible to request and free a list of GPIOs.
Signed-off-by: Simon Glass <sjg@chromium.org>
Now that the uclass supports gpio_request/free() there is no need for the
driver to implement it too. Drop this unnecessary code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Implement this method so that the 'gpio' command can do its job correctly.
For sandbox we only support input and output states for a gpio.
Signed-off-by: Simon Glass <sjg@chromium.org>
using UBI and DM together leads in compiler error, as
both define a "struct device", so rename "struct device"
in include/dm/device.h to "struct udevice", as we use
linux code (MTD/UBI/UBIFS some USB code,...) and cannot
change the linux "struct device"
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Marek Vasut <marex@denx.de>
This provides a way of simulating GPIOs by setting values which are seen
by the normal gpio_get/set_value() calls.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
