Currently in _dm_gpio_set_flags() when set_flags ops is not implemented
direction_output()/_input() is used, but pull up/down is not supported by
these ops.
Signed-off-by: Zixun LI <admin@hifiphile.com>
As part of bringing the master branch back in to next, we need to allow
for all of these changes to exist here.
Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay
Ethernet"' I failed to notice that b4 noticed it was based on next and
so took that as the base commit and merged that part of next to master.
This reverts commit c8ffd1356d, reversing
changes made to 2ee6f3a5f7.
Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>
Remove <common.h> from this driver directory and when needed
add missing include files directly.
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
UCLASS_PMIC may have GPIO children without exposed fdt node,
in this case if requesting fails, check if uclass is PMIC.
Restrict build for supported devices only to save those precious
bytes on devices with no spare memory.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
The last user of the NEEDS_MANUAL_RELOC has been removed in commit
26af162ac8 ("arch: m68k: Implement relocation")
Remove now unused NEEDS_MANUAL_RELOC code.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
The current gpio-uclass design uses name field in struct gpio_dev_priv as
an indicator that GPIO is claimed by consumer. This overloads the function
of name field and does not work well for named pins not configured as GPIO
pins.
Introduce separate bitfield array as the claim indicator.
This unbreaks dual-purpose AF and GPIO operation on STM32MP since commit
2c38f7c318 ("pinctrl: pinctrl_stm32: Populate uc_priv->name[] with pinmux node's name")
where any pin which has already been configured as AF could no longer be
claimed as dual-purpose GPIO. This is important for pins like STM32 MMCI
st,cmd-gpios .
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Devices do not necessarily have nodes attached to them, since they can be
created from platdata. In SPL a devicetree may in fact not exist at all.
Check the node before using it. This avoids failure when OF_CHECKS is
enabled.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: 5fc7cf8c8e ("gpio: add gpio-hog support")
Reviewed-by: Heiko Schocher <hs@denx.de>
By the time we jump to the err label, count represents the number of
gpios we've successfully requested. So by subtracting one, we fail to
free the most recently requested.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Simon Glass <sjg@chromium.org>
The API is more convenient to use if one doesn't have to know upfront
which gpio controller has a line with the name one is searching for,
and arrange to look that device up somehow. Or implement this loop
oneself.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Simon Glass <sjg@chromium.org>
The gpio_hog_probe_all() functionality can be perfectly well replaced by
DM_FLAG_PROBE_AFTER_BIND DM flag, which would trigger .probe() callback
of each GPIO hog driver instance after .bind() and thus configure the
hogged GPIO accordingly.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Samuel Holland <samuel@sholland.org>
uclass_first_device/uclass_next_device return value will be removed,
don't use it.
With the current implementation dev is equivalent to !ret. It is
redundant to check both, ret check can be replaced with dev check, and
ret check inside the iteration is dead code.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Matching anything that just happens to have the sought-for label as a
prefix is wrong. For example, if the board designer has designated 10
lines for debug purposes, named "debug1" through "debug10", and we are
looking up "debug1", if debug10 happens to be met first during the
iteration we'd wrongly return that.
In theory, this can break existing users that could rely on this
quirk, but OTOH keeping the current broken semantics can cause a lot
of grief for people hitting this in the future and not understanding
why they don't find the line they expect. Considering how few in-tree
defconfigs currently set DM_GPIO_LOOKUP_LABEL (ignoring sandbox, only
four "real" boards), let's fix it before the use becomes more
widespread.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Even pin with GPIOF_UNUSED function can have a label.
The criteria to add or not a space character is linked to label not to
the used/unused status.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Use the CONFIG macros to conditionally build the GPIO hogging support in
either the SPL or U-Boot, or both, depending on the configuration. Also
call the GPIO hog probe function in the common SPL board initialization
as an equivalent to adding it to the U-Boot init sequence functions.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add support for the upstream gpio-line-names property already described
in the common GPIO binding document[1]. The ability to search for a line
name allows boards to lift the implementation of common GPIO behaviours
away from specific line indexes on a GPIO controller.
[1] 3c35bfee83/dtschema/schemas/gpio/gpio.yaml (L17)
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
The generic GPIO flags binding is shared across many drivers, some of
which need their own xlate function. Factor out the flag translation
code from gpio_xlate_offs_flags so it does not need to be duplicated.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Translation of an OF GPIO specifier should fail if the pin offset is
larger than the number of pins in the GPIO bank.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Translation of a pin name to a device+offset should fail if the offset
is larger than the number of pins in the GPIO bank.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add support for accessing GPIOs using of-plata. This uses the same
mechanism as for clocks, but allows use of the xlate() method so that
the driver can interpret the parameters.
Update the condition for GPIO_HOG so that it is not built into SPL,
since it needs SPL_OF_REAL which is not enabled in sandbox_spl.
Signed-off-by: Simon Glass <sjg@chromium.org>
Now that we have a 'positive' Kconfig option, use this instead of the
negative one, which is harder to understand.
Signed-off-by: Simon Glass <sjg@chromium.org>
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>
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 <sean.anderson@seco.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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 <sjg@chromium.org>
Update this driver to use the common method of putting the driver
operations in an 'ops' variable install of calling gpio_get_ops()
repeatedly. Make it const since operations do not change.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
The new update_flags() method is more flexible since it allows the
driver to see the full flags all at once. Use that in preference to these
two functions. Add comments to that effect.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
It is convenient to be able to adjust some of the flags for a GPIO while
leaving others alone. Add a function for this.
Update dm_gpio_set_dir_flags() to make use of this.
Also update dm_gpio_set_value() to use this also, since this allows the
open-drain / open-source features to be implemented directly in the
driver, rather than using the uclass workaround.
Update the sandbox tests accordingly. This involves a lot of changes to
dm_test_gpio_opendrain_opensource() since we no-longer have the direciion
being reported differently depending on the open drain/open source flags.
Also update the STM32 drivers to let the uclass handle the active low/high
logic.
Drop the GPIOD_FLAGS_OUTPUT() macro which is no-longer used.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Tested-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Tested-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
This function can be used to get any flags, not just direction flags.
Rename it to avoid confusion.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
It is more useful to be able to read all the flags, not just the direction
ones. In fact this is what the STM32 driver does. Update the method name
to reflect this.
Tweak the docs a little and use 'flagsp' as the return argument, as is
common in driver model, to indicate it returns a value.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
The current method is a misnomer since it is also used (e.g. by stm32) to
update pull settings and open source/open drain.
Rename it and expand the documentation to cover a few more details.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
These functions use devicetree and cannot work with of-platdata, which has
no runtime devicetree.
If they are used, the current linker error is confusing, since it talks
about missing functions in the bowels of driver model.
Avoid compiling these functions at all with of-platdata, so that a
straightforward link error points to the problem.
Series-changes; 3
- Fix 'wprl' typo
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
In the spirit of using the same base name for all of these related macros,
rename this to have the operation at the end. This is not widely used so
the impact is fairly small.
Signed-off-by: Simon Glass <sjg@chromium.org>
Most drivers use these access methods but a few do not. Update them.
In some cases the access is not permitted, so mark those with a FIXME tag
for the maintainer to check.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
This name is far too long. Rename it to remove the 'data' bits. This makes
it consistent with the platdata->plat rename.
Signed-off-by: Simon Glass <sjg@chromium.org>
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).
Rename some of the latter variables to end with 'plat' for consistency.
Signed-off-by: Simon Glass <sjg@chromium.org>
This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.
Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.
Signed-off-by: Simon Glass <sjg@chromium.org>
Use ofnode_ or dev_ APIs instead of fdt_ and fdtdec_ APIs so that the
driver can support live DT.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
Add managed functions to get a gpio from the devce-tree, based on a
property name (minus the '-gpios' suffix) and optionally an index.
When the device is unbound, the GPIO is automatically released and the
data structure is freed.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
When generating ACPI tables we need to convert GPIOs in U-Boot to the ACPI
structures required by ACPI. This is a SoC-specific conversion and cannot
be handled by generic code, so add a new GPIO method to do the conversion.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
dm_gpio_lookup_name() searches for a gpio through
the bank name. But we have also gpio labels, and it
makes sense to search for a gpio also in the labels
we have defined, if no gpio is found through the
bank name definition.
This is useful for example if you have a wp pin on
different gpios on different board versions.
If dm_gpio_lookup_name() searches also for the gpio labels,
you can give the gpio an unique label name and search
for this label, and do not need to differ between
board revisions.
Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Don't enable by default]
Signed-off-by: Tom Rini <trini@konsulko.com>
save the GPIOD_ flags also in the gpio descriptor.
Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
Fixes: 788ea83412 ("gpio: add function _dm_gpio_set_dir_flags")
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Walter Lozano <walter.lozano@collabora.com>
Handle the GPIOD_OPEN_DRAIN & GPIOD_OPEN_SOURCE flags to emulate open drain
and open source by setting the GPIO line as input depending on the
requested value.
The behaviour is taken from the Linux gpiolib.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
