Add the ops for GPIO driver set_dir_flags() to set the dir flags.
The user can update the direction and configuration
of each GPIO with a only call to dm_gpio_set_dir_flags() or
dm_gpio_set_dir() and respecting the configuration provided by
device tree (saved in desc->flags).
When these optional ops are absent, the gpio uclass use the mandatory
ops (direction_output, direction_input, get_value) and desc->flags
to manage only the main dir flags:
- GPIOD_IS_IN
- GPIOD_IS_OUT
- GPIOD_IS_OUT_ACTIVE
- GPIOD_ACTIVE_LOW
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add the ops for GPIO driver get_dir_flags(), allows to get dynamically
the current gpio configuration; it is used by the API function
dm_gpio_get_dir_flags().
When these optional ops are absent, the gpio uclass continues to use
the mandatory ops (direction_output, direction_input, get_value) and
value of desc->flags to manage only the main dir flags:
- GPIOD_IS_IN
- GPIOD_IS_OUT
- GPIOD_IS_OUT_ACTIVE
- GPIOD_ACTIVE_LOW
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit manages the new dir flags that can be used in gpio
specifiers to indicate the pull-up or pull-down resistor
configuration for output gpio (GPIO_PULL_UP, GPIO_PULL_DOWN)
or the Open Drain/Open Source configuration for input gpio
(GPIO_OPEN_DRAIN, GPIO_OPEN_SOURCE).
These flags are already supported in Linux kernel in gpio lib.
This patch only parse and save the direction flags in GPIO
descriptor (desc->flags), it prepares the introduction of new ops
to manage them.
The GPIO uclass supports new GPIO flags from device-tree
(GPIO_XXX define in include/dt-bindings/gpio/gpio.h)
and translate them in the dir flags (GPIOD_XXX):
- GPIO_PULL_UP => GPIOD_PULL_UP
- GPIO_PULL_DOWN => GPIOD_PULL_DOWN
- GPIO_OPEN_DRAIN => GPIOD_OPEN_DRAIN
- GPIO_OPEN_SOURCE => GPIOD_OPEN_SOURCE
This patch also adds protection in the check_dir_flags function for
new invalid configuration of the dir flags.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Update the flag management in GPIO uclass: the desc->flags is always
combined with the requested flags and the GPIO descriptor is updated
for further call.
Add a function dm_gpio_get_dir_flags to get dynamically
the current dir_flags (configuration and value).
This patch prepare introduction of the dir flags support with new ops.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a macro to provide the GPIO output value according
the dir flags content.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a dir flags validity check with a new function
check_dir_flags.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Introduce the function _dm_gpio_set_dir_flags to set dir flags
without check if the GPIO is reserved.
Separate the reserved check for "set_dir" and "set_dir_flags".
This patch is a preliminary step to add new ops.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Introduce the function _gpio_get_value to get the GPIO value
without check if it is reserved.
This patch prepare new ops introduction.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a helper function gpio_desc_init() to initialize the gpio descriptor;
with this function the flags will be always set to 0.
It wasn't the case before this patch in dm_gpio_lookup_name.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This patch removes the ops get_open_drain/set_open_drain
and the API dm_gpio_get_open_drain/dm_gpio_set_open_drain.
The ops only provided in one driver (mpc8xxx gpio) and the
associated API is never called in boards.
This patch prepare a more generic set/get_dir_flags ops,
including the open drain property.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Some SoCs in the mpc83xx family, e.g. mpc8309, have a dedicated spi
chip select, SPISEL_BOOT, that is used by the boot code to boot from
flash.
This chip select will typically be used to select a SPI boot
flash. The SPISEL_BOOT signal is controlled by a single bit in the
SPI_CS register.
Implement a gpio driver for the spi chip select register. This allows a
spi driver capable of using gpios as chip select, to bind a chip select
to SPISEL_BOOT.
It may be a little odd to do this as a GPIO driver, since the signal
is neither GP or I, but it is quite convenient to present it to the
spi driver that way. The alternative it to teach mpc8xxx_spi to handle
the SPISEL_BOOT signal itself (that is how it's done in the linux
kernel, see commit 69b921acae8a)
Signed-off-by: Klaus H. Sorensen <khso@prevas.dk>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
The driver correctly handles reading back the value of an output gpio
by reading from the shadow register for output, and from gpdat for
inputs.
Unfortunately, when setting the value of some gpio, we do a RMW cycle
on the gpdat register without taking the shadow register into account,
thus accidentally setting other output gpios (at least those whose
value cannot be read back) to 0 at the same time.
When changing a gpio from input to output, we still need to make sure
it initially has the requested value. So, the procedure is
- update the shadow register
- compute the new gpdir register
- write the bitwise and of the shadow and new gpdir register to gpdat
- write the new gpdir register
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Since some chips don't support reading back the value of output gpios
from the gpdat register, we should not do a RMW cycle (i.e., the
clrbits_be32) on the gpdat register when setting a gpio as input, as
that might accidentally change the value of some other (still
configured as output) gpio.
The extra indirection through mpc8xxx_gpio_set_in() does not help
readability, so just fold the gpdir update into
mpc8xxx_gpio_direction_input().
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
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
Since commit bcee8d6764 ("dm: gpio: Allow control of GPIO uclass in SPL")
CONFIG_DM_74X164 is no longer built for mx7dsabresd_defconfig, as
this target does not use CONFIG_SPL_GPIO.
Remove such dependency and let the the 74X164 GPIO driver be built
again.
This restores Ethernet functionality on the imx7-sdb board as the
Ethernet reset PHY comes from a GPIO driven by a 74LV595PW I/O
expander.
Fixes: bcee8d6764 ("dm: gpio: Allow control of GPIO uclass in SPL")
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tested-by: Alifer Moraes <alifer.wsdm@gmail.com>
DM_GPIO based GPIO controller driver for CAxxxx SoCs.
This driver support multiple CPU architectures and
Cortina Access SoC platforms.
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: Jason Li <jason.li@cortina-access.com>
Signed-off-by: Alex Nemirovsky <alex.nemirovsky@cortina-access.com>
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>
This function name conflicts with our desire to #define free() to
something else on sandbox. Since it deals with resources, rename it to
rfree().
Signed-off-by: Simon Glass <sjg@chromium.org>
- Various minor fixes for x86
- Switch to ACPI mode on Intel edison
- Support run-time configuration for NS16550 driver
- Update coreboot and slimbootloader serial drivers to use NS16550
run-time configuration
- ICH SPI driver fixes to hardware sequencing erase case
- Move ITSS from Apollo Lake to a more generic location
- Intel GPIO driver bug fixes
- Move to vs2017-win2016 platform build host for Azure pipelines
Fix the following in intel_gpio_get_value():
* The value of the register is contained in the variable 'reg', not in
'mode'. The variable 'mode' contains only the configuration whether
the gpio is currently an input or an output.
* The correct bitmasks for the input and output value are
PAD_CFG0_RX_STATE and PAD_CFG0_TX_STATE.
Use them instead of the currently used PAD_CFG0_RX_STATE_BIT and
PAD_CFG0_TX_STATE_BIT.
Signed-off-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Add missing 'PAD_CFG0_TX_STATE' to the clear mask for pcr_clrsetbits32().
Otherwise this bit cannot be cleared again after it has been set once.
Signed-off-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
The function pcr_clrsetbits32() expects a device with a P2SB parent
device. In intel_gpio_direction_output() and intel_gpio_set_value()
the device 'dev' is passed to pcr_clrsetbits32(), which is a
gpio-controller with a device 'pinctrl' as parent. This does not match
the expectations of pcr_clrsetbits32(). But the 'pinctrl' device has a
P2SB as parent.
Pass the 'pinctrl' device instead of the 'dev' device to
pcr_clrsetbits32().
Signed-off-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Add "ti,keystone-gpio" compatible so as be able to use Linux DT files as
is.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Fix below compiler warning for 64bit builds
drivers/gpio/da8xx_gpio.c: In function ‘davinci_get_gpio_bank’:
drivers/gpio/da8xx_gpio.c:446:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
return (struct davinci_gpio *)addr;
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
J721e EVM has a TCA6424 IO expander that has 24 GPIOs. Add support for
the same
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Add a GPIO driver which uses the pinctrl driver to access the pad
information. This driver relies on the GPIO nodes being subnodes to the
pinctrl device.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
At present if CONFIG_SPL_GPIO_SUPPORT is enabled then the GPIO uclass
is included in SPL/TPL without any control for boards. Some boards may
want to disable this to reduce code size where GPIOs are not needed in
SPL or TPL.
Add a new Kconfig option to permit this. Default it to 'y' so that
existing boards work correctly.
Change existing uses of CONFIG_DM_GPIO to CONFIG_IS_ENABLED(DM_GPIO) to
preserve the current behaviour. Also update the 74x164 GPIO driver since
it cannot build with SPL.
This allows us to remove the hacks in config_uncmd_spl.h and
Makefile.uncmd_spl (eventually those files should be removed).
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Make the at91_gpio driver set sensible GPIO bank names in the platform
data. This makes the 'gpio status' command a lot more useful.
Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Reviewed-by: Eugen Hristev <eugen.hristev@microchip.com>
_gpio_direction_output function currently calls gpio_set_value
with the wrong gpio number. gpio_set_value in the uclass driver
expects a different gpio number and the _gpio_direction_output
is currently providing the number specific to the bank.
Hence fix it by calling the _gpio_set_value function instead.
Reported-by: Faiz Abbas <faiz_abbas@ti.com>
Fixes: 8e51c0f254 ("dm: gpio: Add DM compatibility to GPIO driver for Davinci")
Signed-off-by: Keerthy <j-keerthy@ti.com>
This patch adds support for gpio driver for pmc gpio.
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This patch adds support for gpio driver for versal platform
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This patch adds a DM based driver model for gpio controller present in
FU540-C000 SoC on HiFive Unleashed A00 board. This SoC has one GPIO
bank and 16 GPIO lines in total, out of which GPIO0 to GPIO9 and
GPIO15 are routed to the J1 header on the board.
This implementation is ported from linux based gpio driver submitted
for review by Wesley W. Terpstra <wesley@sifive.com> and/or Atish Patra
<atish.patra@wdc.com> (many thanks !!). The linux driver can be referred
here [1]
[1]: https://lkml.org/lkml/2018/10/9/1103
Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
After this patch the mxs_gpio.c DM/DTS driver can be used at early SPL to
read states of gpio pins (and for example alter the boot flow).
It was necessary to adjust its name to 'fsl_imx_2{38}_gpio' to match
requirements for SPL_OF_PLATDATA usage.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
This patch fixes zynq_gpio_direction() to call driver specific
zynq_gpio_set_value function rather than top level gpio_set_value.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
At present there is only one control for this and it is used for both SPL
and TPL. But SPL might have a lot more space than TPL so the extra cost of
a full printf() might be acceptable.
Split the option into two, providing separate SPL and TPL controls. The
TPL setting defaults to the same as SPL.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
At present address translation does not work since there is no ranges
property in the spmi nodes. Add empty ranges properties and a little more
logging so that this shows the error:
/tmp/b/sandbox/u-boot -d /tmp/b/sandbox/arch/sandbox/dts/test.dtb \
-c "ut dm spmi_access_peripheral" -L7 -v
...
pm8916_gpio_probe() bad address: returning err=-22
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
This converts the following to Kconfig:
CONFIG_MXS_GPIO
Travis-CI: https://travis-ci.org/lmajewski/u-boot-dfu/builds/571260789
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
recently added gpio hog patch was "in discussion"
state with Simon Glass. This patch now adds most
of comments from Simon Glass.
Signed-off-by: Heiko Schocher <hs@denx.de>
This patch adds support for DM/DTS in the mxs_gpio.c driver.
Information regarding per gpio controller pin number is passed via DTS.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
The Allwinner H6 pin controller is not really special, at least not when
it comes to normal GPIO operation.
Add the H6 compatible strings to the list of recognised strings, to make
GPIOs work for H6 boards.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Probably for no particular reason SUNXI_GPIO was still defined the "old
way", in header files only.
Introduce SUNXI_GPIO to the Kconfig file in drivers/gpio to remove
another line from our dreadful config_whitelist.txt.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> # Pine-H64
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
add gpio-hog support. GPIO hogging is a mechanism
providing automatic GPIO request and configuration
as part of the gpio-controller's driver probe function.
for more infos see:
doc/device-tree-bindings/gpio/gpio.txt
Signed-off-by: Heiko Schocher <hs@denx.de>
Tested-by: Michal Simek <michal.simek@xilinx.com> (zcu102)
Tested-by: Patrick Delaunay <patrick.delaunay@st.com>
As compatible string "st,stm32-gpio" is no more used, .ofmatch
callback becomes useless, remove it.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
As this driver is used on stm32f4/f7/h7 and stm32mp1
SoCs, rename it with a more generic name.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
This patch solves the following warnings:
drivers/gpio/stm32_gpio.c: In function 'stm32_offset_to_index':
: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (idx == offset)
^~
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Add TI TCA9539 compatible string for yet another I2C GPIO expander.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Mario Six <mario.six@gdsys.cc>
Cc: Peng Fan <van.freenix@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
commit 1b898ffc04 ("gpio: dwapb_gpio: convert to livetree") introduced
a bug in that dev->node of the gpio chip was accidentally set to the
of_node of its bank subnode.
What it meant to do was assign subdev->node, not dev->node.
While this doesn't affect too many use cases, iterating over the gpio
chip's properties doesn't work any more after that, so fix this.
Fixes: commit 1b898ffc04 ("gpio: dwapb_gpio: convert to livetree")
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Convert 'gpio_dwapb_bind' to iterate over subnodes using livetree
functions (inspired from mt7621_gpio.c).
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Add GPIO driver for RZ/A1 SoC. The IP is very different from the
R-Car Gen2/Gen3 one already present in the tree, hence a custom
driver.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Chris Brandt <chris.brandt@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Ocelot
- mt7620: rename arch to more generic name mtmips
- mips: pass initrd addresses via DT as physical addresses
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Merge tag 'mips-pull-2019-05-03' of git://git.denx.de/u-boot-mips
- mscc: small fixes, enhance network support for Serval, Luton and Ocelot
- mt7620: rename arch to more generic name mtmips
- mips: pass initrd addresses via DT as physical addresses
Switch to generic pin controller API for configuring pins as GPIOs
instead of using the ad-hoc call into the R-Car PFC driver. Moreover,
add .free() implementation for the GPIO controller.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Alex Kiernan <alex.kiernan@gmail.com>
Cc: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Cc: Eugeniu Rosca <roscaeugeniu@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick DELAUNAY <patrick.delaunay@st.com>
Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Cc: Simon Glass <sjg@chromium.org>
Currently mach-mt7620 contains only support for mt7628. To avoid confusion,
rename mach-mt7620 to mach-mtmips, which means MediaTek MIPS platforms.
MT7620 and MT7628 should be distinguished by SOC_MT7620 and SOC_MT7628
because they do not share the same lowlevel codes.
Dependencies of four drivers are changed to SOC_MT7628 as these drivers
are only used by MT7628.
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Rockchip use 'arch-rockchip' instead of arch-$(SOC) as common
header file path, so that we can get the correct path directly.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
This driver is used on several big endian mips board.
So we could use raw I/O function instead of forcing
big endian access.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
gpio_get_value should return 0 or 1, not the value of bit & (1 << pin)
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Julien Beraud <julien.beraud@orolia.com>
Allow rockchip boards to use GPIOs before driver model is ready. This is
really only useful for setting GPIOs to enable the early debug console, if
needed on some platforms.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
With the new mscc_bb_spi.c driver, there is no longer use for the
gpio-mscc-bitbang-spi.c driver.
Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This add support for the the MSCC serial GPIO driver in MSCC
VCoreIII-based SOCs.
By using a serial interface, the SIO controller significantly extends
the number of available GPIOs with a minimum number of additional pins
on the device. The primary purpose of the SIO controller is to connect
control signals from SFP modules and to act as an LED controller.
This adds the base driver.
Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>
In order to keep SPL code size below the 32Kb limit,
put under CONFIG_SPL_BUILD flag all unused code in SPL.
This is needed for stm32f7xx board which are using SPL.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
In case "gpio-ranges" property is not present in device tree,
use default value for gpio_count and gpio_range.
This fixes an issue on stm32 F7 and H7 boards where "pinmux status -a"
command didn't return any pin status due to the fact that both stm32 F7
and H7 board DT doesn't use the gpio-ranges property.
Fixes: dbf928dd2634a6("gpio: stm32f7: Add gpio bank holes management")
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
The VCore III SoCs such as the Luton but also the Ocelot can remap an SPI
flash directly in memory. However, for writing in the flash the
communication has to be done by software.
Each of the signal used for the SPI are exposed in a single register. In
order to be able to use the soft-spi driver, the management of this pin
is done through this simple gpio driver.
Even if the main purpose of this driver is to be used by soft-spi, it can
still be used as a normal gpio driver but with limitation: for example
the first pin can't be used as output.
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
In some STM32 SoC packages, GPIO bank has not always 16 gpios.
Several cases can occur, gpio hole can be located at the beginning,
middle or end of the gpio bank or a combination of these 3
configurations.
For that, gpio bindings offer the gpio-ranges DT property which
described the gpio bank mapping.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
As a preparation for merging the socfpga gen5 devicetree files
from Linux, this patch makes the dwapb gpio driver work correctly
without the 'bank-name' property on the gpio-controller nodes.
This property is not present in the Linux drivers and thus is not
present in the Linux devicetrees. It is only used to access pins
via bank name.
This fallback is necessary since without it, the driver will
return an error code which will lead to an error in U-Boot
startup.
The bank names will still be added to the default board device
trees in follow-up patch, but other boards using this driver and
not including the bank name should also work with the socfpga.dtsi
without adding the bank-name property.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
This patch adds GPIO support for the Mediatek MT7621 SoC, tested on
MT7688 (Gardena smart-gateway). The driver is loosly based on the
Linux kernel version.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
[fixed checkpatch.pl warnings: Prefer 'unsigned int' to bare use of 'unsigned']
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This patch adds gpio get_function ops support.
This function reports the state of a gpio.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
The pca953x_gpio driver uses default value of polarity inversion
register. For some devices like PCA9557 and MAX7310, their polarity
inversion register default value is 0xf0. So for high 4 ports, when
reading their values, the values are inverted as the actual level.
This patch clears the polarity inversion register to 0 at init, so
that the port read and write values are aligned.
Signed-off-by: Ye Li <ye.li@nxp.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be
bound before relocation. However due to a bug in the DM core,
the flag only takes effect when devices are statically declared
via U_BOOT_DEVICE(). This bug has been fixed recently by commit
"dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in
lists_bind_fdt()", but with the fix, it has a side effect that
all existing drivers that declared DM_FLAG_PRE_RELOC flag will
be bound before relocation now. This may expose potential boot
failure on some boards due to insufficient memory during the
pre-relocation stage.
To mitigate this potential impact, the following changes are
implemented:
- Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver
only supports configuration from device tree (OF_CONTROL)
- Keep DM_FLAG_PRE_RELOC flag in the driver only if the device
is statically declared via U_BOOT_DEVICE()
- Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for
drivers that support both statically declared devices and
configuration from device tree
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
Commit fb01e07a95 accidentally broke initialisation of GPIO
descriptor flags from device tree: currently the active low
flag from gpio-specifier is always ignored. Fix it.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Mario Six <mario.six@gdsys.cc>
Push generic defines of gpio.h out of mach-davinci to drivers/gpio
now that non-davinci architectures are beginning to use this IP.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
[trini: Fix calimain build]
Signed-off-by: Tom Rini <trini@konsulko.com>
Change to use managed resource function devm_kcalloc(),
so it will auto free memory when driver is removed.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Add code to reset all reset signals as in gpio DT node. A reset property
is an optional feature, so only print out a warning and do not fail if a
reset property is not present.
If a reset property is discovered, then use it to deassert, thus
bringing the IP out of reset.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Enabled get_function support for dwapb where the function will
return the state of GPIO port.
Signed-off-by: Chin Liang See <chin.liang.see@intel.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Platforms with limited resources in SPL may enable OF_PLATDATA,
this limits some of the library functions and cannot extract data
from the device tree. This patch adds additional wrappers around
these functions to only allow them when OF_CONTROL is enabled and
OF_PLATDATA is not.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The GPIO bank numbers do not appear in the device tree, so this
patch makes the gpio name based on the address
(ie gpio@49054000_31 vs gpio4_31)
adam
Signed-off-by: Adam Ford <aford173@gmail.com>
Tested-by: Derald D. Woods <woods.technical@gmail.com>
With DM and device tree support, let's use the GPIO_ACTIVE_HIGH
and GPIO_ACTIVE_LOW from the device tree as they are intended.
Signed-off-by: Adam Ford <aford173@gmail.com>
The GPIO banks are broken up into two 16-bit registers for each
bank set. Unfortunately, the math that determines how to shift
blindly shifted by the number of the gpio. This worked for gpio
numbers under 32, but higher gpio's are broken. This fixes the
gpio index, so the bank is passed and the shift amount within
the register is passed now instead of the gpio number.
Fixes: 8e51c0f25406("dm: gpio: Add DM compatibility to
GPIO driver for Davinci")
Signed-off-by: Adam Ford <aford173@gmail.com>
Replace clrsetbits on ODR register (2 operations: one read + one write)
by writing on the correct bit (SET or RESET) of the BSRR register
(only 1 write operation).
Moreover this register if safe for simultaneous access by 2 master on
the bus.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Add support for reading label property from DT and set up bank name
based on that. If label property is not present full device node name is
used.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
.set_value functions have no specified return value and gpio_uclass is
not working with it too. But this patch is returning 0 to be in sync
with others DM gpio drivers.
Reported-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
Reading registers for finding out output value is not working because
input value is read instead in case of tristate.
Reported-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
