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path: root/drivers/gpio
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2017-06-05gpio: samsung: Drop s3c2440_gpio driverSimon Glass
This is no longer used in U-Boot. Drop it. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01dm: gpio: power: Convert pm8916 drivers to livetreeSimon Glass
This PMIC driver (power and GPIO) is used by the sandbox SPMI tests. Update the drivers to support a live device tree so that the tests pass. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01dm: gpio: Add live tree supportSimon Glass
Add support for requesting GPIOs with a live device tree. This involves adjusting the function signature for the legacy function gpio_request_by_name_nodev(), so fix up all callers. Signed-off-by: Simon Glass <sjg@chromium.org> Fixes to stm32f746-disco.c: Signed-off-by: Tom Rini <trini@konsulko.com>
2017-06-01dm: gpio: sandbox: Use dev_read...() functions to access DTSimon Glass
Use the new dev_read...() functions to access the device tree, so that a live tree can be used. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01dm: gpio: Refactor to prepare for live tree supportSimon Glass
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>
2017-06-01dm: core: Replace of_offset with accessor (part 2)Simon Glass
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>
2017-06-01dm: Fix up inclusion of common.hSimon Glass
It is good practice to include common.h as the first header. This ensures that required features like the DECLARE_GLOBAL_DATA_PTR macro, configuration options and common types are available. Fix up some files which currently don't do this. This is necessary because driver model will soon start using global data and configuration in the dm/read.h header file, included via dm.h. The gd->fdt_blob value will be used to access the device tree and CONFIG options will be used to determine whether to support inline functions in the header file. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01atmel: Fix up use of dm_scan_fdt_node()Simon Glass
This function should not be used outside the core driver-model code. Update it to use dm_scan_fdt_dev() instead. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01dm: Rename dev_addr..() functionsSimon Glass
These support the flat device tree. We want to use the dev_read_..() prefix for functions that support both flat tree and live tree. So rename the existing functions to avoid confusion. In the end we will have: 1. dev_read_addr...() - works on devices, supports flat/live tree 2. devfdt_get_addr...() - current functions, flat tree only 3. of_get_address() etc. - new functions, live tree only All drivers will be written to use 1. That function will in turn call either 2 or 3 depending on whether the flat or live tree is in use. Note this involves changing some dead code - the imx_lpi2c.c file. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01dm: Use dm.h header when driver mode is usedSimon Glass
This header includes things that are needed to make driver build. Adjust existing users to include that always, even if other dm/ includes are present Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-22gpio: rcar_gen3: Fix GPIO read supportKouei Abe
This patch fixes to read the GPIO status after confirming the INOUT setting. Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com> Signed-off-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com> Cc: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Cc: Tom Rini <trini@konsulko.com>
2017-05-18gpio: 74x164: make oe-pins optionalPeng Fan
Make oe-pins optional because some boards have fixed it to enable. Signed-off-by: Peng Fan <peng.fan@nxp.com> Cc: Simon Glass <sjg@chromium.org> Cc: Stefano Babic <sbabic@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-17x86: ich6_gpio: Add use-lvl-write-cache for I/O access modeBin Meng
Add a device-tree property use-lvl-write-cache that will cause writes to lvl to be cached instead of read from lvl before each write. This is required on some platforms that have the register implemented as dual read/write (such as Baytrail). Prior to this fix the blue USB port on the Minnowboard Max was unusable since USB_HOST_EN0 was set high then immediately set low when USB_HOST_EN1 was written. This also resolves the 'gpio clear | set' command warning like: "Warning: value of pin is still 0" Signed-off-by: George McCollister <george.mccollister@gmail.com> <rebased on latest origin/master, fixed all baytrail boards> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-15gpio: Move OMAP_GPIO to KconfigTom Rini
This driver is used often enough such that we want to have this enabled by default on any ARCH_OMAP2PLUS board, and this only compiles on ARCH_OMAP2PLUS due to required defines, so mark that as the depends. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-05-12gpio-uclass.c: Fix comparison of unsigned expression warningTom Rini
We declare that gpio_base (which is the base for counting gpios, not an address) is unsigned. Therefore the comparison with >= 0 is always true. As the desire is to allow for this base number to be 0, we can just drop this check. Reported by clang-3.8. Cc: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-10dm: gpio: add BCM6345 gpio driverÁlvaro Fernández Rojas
This driver is based on linux/arch/mips/bcm63xx/gpio.c, simplified to allow defining one or two independent banks for each Broadcom SoC. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-08dm: gpio: Add driver for stm32f7 gpio controllerVikas Manocha
This patch adds gpio driver supporting driver model for stm32f7 gpio. Signed-off-by: Vikas Manocha <vikas.manocha@st.com> Reviewed-by: Simon Glass <sjg@chromium.org> Cc: Christophe KERELLO <christophe.kerello@st.com> [trini: Add depends on STM32] Signed-off-by: Tom Rini <trini@konsulko.com>
2017-04-20gpio: sunxi: Add compatible string for R40 PIOChen-Yu Tsai
The PIO on the R40 SoC is mostly compatible with the A20. Only a few pin functions for mmc2 were added to the PC pingroup, to support 8 bit eMMCs. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-04-13gpio: at91_gpio: add the clock supportWenyou Yang
Add the clock support. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
2017-04-13gpio: at91_gpio: add the device tree supportWenyou Yang
Add the device tree support. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
2017-04-13gpio: Kconfig: add CONFIG_AT91_GPIO optionWenyou Yang
The CONFIG_AT91_GPIO option is used to select AT91 PIO GPIO driver. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
2017-04-13gpio: at91_gpio: remove CPU_HAS_PIO3 macroWenyou Yang
The intention of the removal is the preparation to introduce the new AT91 PIO pinctrl driver. Use the union to make the PIO3 and PIO2's registers be together and make their offset aligned. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-03-17gpio: Add Rapid GPIO2P driver for i.MX7ULPPeng Fan
Add the imx_rgpio2p driver for Rapid GPIO2P controllers on i.MX7ULP. Have added all ports on RGPIO2P_0 and RGPIO2P_1. The configurations CONFIG_IMX_RGPIO2P and CONFIG_DM_GPIO must be set to y to enable the drivers. To use the GPIO function, the IBE and OBE needs to set in IOMUXC. We did not set the bits in driver, but leave them to IOMUXC settings of the GPIO pins. User should use IMX_GPIO_NR to generate the GPIO number for gpio APIs access. Signed-off-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Ye Li <ye.li@nxp.com> Reviewed-by : Stefano Babic <sbabic@denx.de>
2017-02-08Merge git://git.denx.de/u-boot-dmTom Rini
2017-02-08GPIO: Correct doc typo "confguration" -> "configuration"Robert P. J. Day
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
2017-02-08dm: core: Replace of_offset with accessorSimon Glass
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>
2016-12-27Update Maintainer and Author's email addressAjay Bhargav
I am not longer using my old email address "ajay.bhargav@einfochips.com". For U-Boot development email address is now updated to contact@8051projects.net Signed-off-by: Ajay Bhargav <contact@8051projects.net>
2016-12-20gpio: zynq: Remove empty lineMichal Simek
Trivial coding style fix. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2016-11-28gpio: bcm2835: add device tree supportFabian Vogt
This patch adds device tree support for the bcm2835 GPIO driver. Signed-off-by: Fabian Vogt <fvogt@suse.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-11-21gpio: dwapb: Add support for port BPhil Edworthy
The IP supports two ports, A and B, each providing up to 32 gpios. The driver already creates a 2nd gpio bank by reading the 2nd node from DT, so this is quite a simple change to support the 2nd bank. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Acked-by: Marek Vasut <marex@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-10-28gpio: atmel_pio4: Remove unnecessary clock callingWenyou Yang
Due to the peripheral clock driver improvement, remove the unnecessary clock calling. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Acked-by: Stephen Warren <swarren@nvidia.com>
2016-10-13libfdt: Bring in upstream stringlist functionsSimon Glass
These have now landed upstream. The naming is different and in one case the function signature has changed. Update the code to match. This applies the following upstream commits by Thierry Reding <treding@nvidia.com> : 604e61e fdt: Add functions to retrieve strings 8702bd1 fdt: Add a function to get the index of a string 2218387 fdt: Add a function to count strings Signed-off-by: Simon Glass <sjg@chromium.org>
2016-10-11Revert "x86: broadwell: gpio: Remove the codes to set up pin control"Simon Glass
This makes the assumption that setting up pinctrl in cpu_init_r() is safe. On samus we need GPIOs before relocation in order to support power control. This commit fixes the following message on boot: initcall sequence ffe5c6f4 failed at call ffe01d3d (err=-1) ### ERROR ### Please RESET the board ### In any case it seems better to leave init to driver model, so that it can pick up the GPIO driver when it needs it. Since pinctrl is a dependency of the GPIO driver, we may as well put the dependency there and avoid these problems. This reverts commit 9769e05bcf79939bad23a719982dd1f85a110f3c. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-09-23treewide: replace #include <asm/errno.h> with <linux/errno.h>Masahiro Yamada
Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have the same content. (both just wrap <asm-generic/errno.h>) Replace all include directives for <asm/errno.h> with <linux/errno.h>. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> [trini: Fixup include/clk.] Signed-off-by: Tom Rini <trini@konsulko.com>
2016-09-06serial: bcm283x_mu: Detect disabled serial deviceAlexander Graf
On the raspberry pi, you can disable the serial port to gain dynamic frequency scaling which can get handy at times. However, in such a configuration the serial controller gets its rx queue filled up with zero bytes which then happily get transmitted on to whoever calls getc() today. This patch adds detection logic for that case by checking whether the RX pin is mapped to GPIO15 and disables the mini uart if it is not mapped properly. That way we can leave the driver enabled in the tree and can determine during runtime whether serial is usable or not, having a single binary that allows for uart and non-uart operation. Signed-off-by: Alexander Graf <agraf@suse.de> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-09-06bcm2835_gpio: Implement GPIOF_FUNCAlexander Graf
So far we could only tell the gpio framework that a GPIO was mapped as input or output, not as alternative function. This patch adds support for determining whether a function is mapped as alternative. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2016-08-15gpio: atmel_pio4: Rework to support DM & DTWenyou Yang
Rework the driver to support driver model and device tree, and support to regard the pio4 pinctrl device as a child of atmel_pio4 device. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-08-15gpio: atmel_pio4: Move PIO4 definitions to head fileWenyou Yang
In order to make these PIO4 definitions shared with AT91 PIO4 pinctrl driver, move them from the existing gpio driver to the head file, and rephrase them. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-08-12fdt: allow fdtdec_get_addr_size_*() to translate addressesStephen Warren
Some code may want to read reg values from DT, but from nodes that aren't associated with DM devices, so using dev_get_addr_index() isn't appropriate. In this case, fdtdec_get_addr_size_*() are the functions to use. However, "translation" (via the chain of ranges properties in parent nodes) may still be desirable. Add a function parameter to request that, and implement it. Update all call sites to default to the original behaviour. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Squashed in build fix from Stephen: Signed-off-by: Simon Glass <sjg@chromium.org>
2016-08-08gpio: Add driver for TI PCF8575 I2C GPIO expanderVignesh R
TI's PCF8575 is a 16-bit I2C GPIO expander.The device features a 16-bit quasi-bidirectional I/O ports. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal. The I/Os should be high before being used as inputs. Read the device documentation for more details[1]. This driver is based on pcf857x driver available in Linux v4.7 kernel. It supports basic reading and writing of gpio pins. [1] http://www.ti.com/lit/ds/symlink/pcf8575.pdf Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
2016-07-31sunxi: gpio: Add .xlate function for gpio phandle resolutionChen-Yu Tsai
sunxi uses a 2 cell phandle for gpio bindings. Also there are no seperate nodes for each pin bank. Add a custom .xlate function to map gpio phandles to the correct pin bank device. This fixes gpio_request_by_name usage. Fixes: 7aa974858422 ("dm: sunxi: Modify the GPIO driver to support driver model") Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-07-24ARM: uniphier: use (devm_)ioremap() instead of map_sysmem()Masahiro Yamada
This does not have much impact on behavior, but makes code look more more like Linux. The use of devm_ioremap() often helps to delete .remove callbacks entirely. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-07-11dm: gpio: MPC85XX GPIO platform data supportHamish Martin
Define a platform data structure for the MPC85XX GPIO driver to allow use of the driver without device tree. Users should define the GPIO blocks for their platform like this: struct mpc85xx_gpio_plat gpio_blocks[] = { { .addr = 0x130000, .ngpios = 32, }, { .addr = 0x131000, .ngpios = 32, }, }; U_BOOT_DEVICES(my_platform_gpios) = { { "gpio_mpc85xx", &gpio_blocks[0] }, { "gpio_mpc85xx", &gpio_blocks[1] }, }; This is intended to build upon the recent submission of the base MPC85XX driver from Mario Six. We need to use that new driver without dts support and this patch gives us that flexibility. This has been tested on a Freescale T2080 CPU, although only the first GPIO block. Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz> Reviewed-by: Mario Six <mario.six@gdsys.cc> Tested-by: Mario Six <mario.six@gdsys.cc> Acked-by: Simon Glass <sjg@chromium.org>
2016-06-19gpio: pca953x: Fix register reading past 8th GPIOmario.six@gdsys.cc
A bug in the pca953x driver prevents correct reading of GPIO input values beyond the 8th GPIO; all values are reported as zero. Setting of GPIO output values is not affected. This patch fixes the reading behavior. Signed-off-by: Mario Six <mario.six@gdsys.cc> Reviewed-by: Peng Fan <van.freenix@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
2016-06-13Merge branch 'master' of git://git.denx.de/u-boot-atmelTom Rini
2016-06-12gpio: at91: Fix pullup/pulldown configuration on PIO3Marek Vasut
On systems with PIO3 (SAMA5D3/D4/..), the pullup and pulldown configuration is mutualy exclusive. This patch assures that the opposite pull resistor gets disabled before the requested pull resistor is enabled. This changes behavior of at91_set_pio_pulldown() such that the pullup is only disabled if pulldown is to be enabled. This changes behavior of at91_set_pio_pullup() such that the pulldown is only disabled if pullup is to be enabled. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Andreas Bießmann <andreas.devel@googlemail.com> Cc: Josh Wu <josh.wu@atmel.com> Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
2016-06-12x86: broadwell: gpio: Remove the codes to set up pin controlBin Meng
Now that we have set up pin control in cpu_init_r(), remove the duplicated codes in the broadwell gpio driver. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-06-12x86: Probe pinctrl driver in cpu_init_r()Bin Meng
At present pinctrl driver gets probed in ich6_gpio driver's probe routine, which has two issues: - Pin's PADs only gets configured when GPIO driver is probed, which is not done by default. This leaves the board in a partially functional state as we must initialize PADs correctly to get perepherals fully working. - The probe routine of pinctrl driver is called multiple times, as normally there are multiple GPIO controllers. It should really be called just once. Move the call to syscon_get_by_driver_data() from ich6_gpio driver to cpu_init_r(). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: George McCollister <george.mccollister@gmail.com> Tested-by: George McCollister <george.mccollister@gmail.com>
2016-06-12x86: ich6_gpio: Output return value of syscon_get_by_driver_data()Bin Meng
The call to syscon_get_by_driver_data() does not save its return value. Print it out to aid debugging. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-06-04Merge branch 'master' of git://git.denx.de/u-boot-mpc85xxTom Rini
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