As explained in commit 4af2a33ee5 ("cmd: gpio: Make `gpio input`
return pin value again") the `gpio input` is used in scripts to obtain
the value of a pin, despite the fact that CMD_RET_FAILURE is
indistinguishable from a valid pin value.
To be able to detect failures and properly use the value of a GPIO in
scripts we introduce the `gpio read` command that sets the variable
`name` to the value of the pin. Return code of the `gpio read` command
can be used to check for CMD_RET_SUCCESS or CMD_RET_FAILURE.
CONFIG_CMD_GPIO_READ is used to enable the `gpio read` command.
Signed-off-by: Diego Rondini <diego.rondini@kynetics.com>
It is a pain to have to specify the value 10 in each call. Add a new
dectoul() function and update the code to use it.
Signed-off-by: Simon Glass <sjg@chromium.org>
We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.
Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.
This requires quite a few header-file additions.
Signed-off-by: Simon Glass <sjg@chromium.org>
4dbc107f46 ("cmd: gpio: Correct do_gpio() return value") correctly
changed the behaviour of the gpio command to return CMD_RET_SUCCESS or
CMD_RET_FAILURE, but any existing script which expects the return value
to be the pin value is broken by this change.
Reinstate the legacy behaviour for `gpio input` only.
Fixes: 4dbc107f46 ("cmd: gpio: Correct do_gpio() return value")
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Alex Kiernan <alex.kiernan@hivehome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
TPM TEE driver
Various minor sandbox video enhancements
New driver model core utility functions
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Merge tag 'dm-pull-6feb20' of https://gitlab.denx.de/u-boot/custodians/u-boot-dm
sandbox conversion to SDL2
TPM TEE driver
Various minor sandbox video enhancements
New driver model core utility functions
Use the correct return value in function do_gpio() and update
commands documentation with the return values from command_ret_t enum.
CMD_RET_SUCCESS is returned on command success and CMD_RET_FAILURE is
returned on command failure.
The command was returning the pin value, which caused confusion when
debugging (#define DEBUG).
Signed-off-by: Luka Kovacic <luka.kovacic@sartura.hr>
Tested-by: Robert Marko <robert.marko@sartura.hr>
At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.
Move the compatibility features into a separate header file.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present devres.h is included in all files that include dm.h but few
make use of it. Also this pulls in linux/compat which adds several more
headers. Drop the automatic inclusion and require files to include devres
themselves. This provides a good indication of which files use devres.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
The assigned value NULL is overwritten before being used. Remove the
assignment.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Allow the 'gpio' command to match GPIO bank names regardless of the case
of each. While these are generally in upper case, it is useful to be able
to provide lower case with the command.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
At present the gpio command only shows GPIOs which are marked as in use.
This makes sense with 'gpio status' since we already have the '-a' flag
to indicate that all GPIOs should be shown. But when a particular GPIO is
requested, it seems better to always display it. At present the request is
simply ignored.
For example if GPIO a10 is not in use, then:
> gpio status a10
shows nothing, not even the function being used for that GPIO. With this
change, it shows the pin status:
> gpio status a10
a10: input: 0 [ ]
Add an extra parameter for this to avoid changing the existing flag
parameter.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: correct the 'gpio' command in the commit message]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
At present this file uses GPIO_OUTPUT and GPIO_INPUT as its sub-command
values. These are pretty generic names. Add a 'C' suffix to avoid possible
conflicts.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
gpio is defined as unsigned int. So we should use %u when calling printf().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Some controllers do not allow the output value to be read. Detect this and
report the error in that case.
Signed-off-by: Simon Glass <sjg@chromium.org>
This is broken - we need to look at the first two characters to distinguish
'gpio status' from 'gpio set'.
Fixes: 0ffe6ab5 (gpio: Allow 's' as an abbreviation for 'status')
Reported-by: Soeren Moch <smoch@web.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Soeren Moch <smoch@web.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Now that they are in their own directory, we can remove this prefix.
This makes it easier to find a file since the prefix does not get in the
way.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
