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path: root/drivers/gpio
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2014-10-23dm: gpio: sandbox: Drop request()/free() in the driverSimon Glass
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>
2014-10-23dm: gpio: sandbox: Implement the remove() methodSimon Glass
This method frees memory so we must make sure to implement it. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-23dm: gpio: sandbox: Implement the get_function() methodSimon Glass
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>
2014-10-23dm: Move the function for getting GPIO status into the uclassSimon Glass
This function can be more easily tested if it is in the uclass. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-23dm: gpio: Add gpio_get_function() and friendsSimon Glass
Add helpers to the uclass to allow finding out the pin function. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-23dm: gpio: Implement GPIO reservation in the uclassSimon Glass
We have several GPIO drivers now and all are doing similar things to record which GPIOs are reserved. Move this logic into the uclass to make the drivers similar. We retain the request()/free() methods since currently one driver does use these for setting up the pin. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-23dm: omap: gpio: Support driver modelSimon Glass
Add driver model support to this driver, while retaining support for the legacy system. Driver model GPIO support is enabled with CONFIG_DM_GPIO as usual. Since gpio_is_valid() no longer exists, we can use the -EINVAL error returned from gpio_request(). Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
2014-10-23dm: omap: gpio: Put _get_gpio_value() logic into its own functionSimon Glass
Add a separate internal helper function to get a GPIO value, so that we will be able to call it with the driver model version and avoid code duplication. Also move gpio_get_bank() and check_gpio() down below the helper functions as these won't be needed with driver model. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
2014-10-23dm: gpio: Support numbered GPIOsSimon Glass
At present banks must be named and it is not possible to refer to GPIOs by number in driver model. Some boards use numbering - e.g. OMAP. It is fairly easy to support by detecting the absense of a bank name (which starts with a letter). Add support for numbered GPIOs in addition to the existing bank support. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
2014-10-23Merge branch 'master' of git://git.denx.de/u-boot-tegraTom Rini
2014-10-23arm: marvell: Move arch/kirkwood.h to arch/soc.hStefan Roese
This move makes is possible to use this header not only from kirkwood platforms but from all Marvell mvebu platforms. Signed-off-by: Stefan Roese <sr@denx.de> Tested-by: Luka Perkov <luka@openwrt.org> Acked-by: Prafulla Wadaskar <prafulla@marvell.com>
2014-10-22dm: rpi: Convert GPIO driver to driver modelSimon Glass
Convert the BCM2835 GPIO driver to use driver model, and switch over Raspberry Pi to use this, since it is the only board. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2014-10-22dm: imx: gpio: Support driver model in MXC gpio driverSimon Glass
Add driver model support with this driver. In this case the platform data is in the driver. It would be better to put this into an SOC-specific file, but this is best attempted when more boards are moved over to use driver model. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
2014-10-22dm: exynos: gpio: Convert to driver modelSimon Glass
Convert the exynos GPIO driver to driver model. This implements the generic GPIO interface but not the extra Exynos-specific functions. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-22dm: exynos: Tidy up GPIO definesSimon Glass
The defines at the top of the GPIO driver use single-character names for parameters which are not very descriptive. Improve these to use descriptive parameter names. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-22dm: exynos: Tidy up GPIO headersSimon Glass
The wrong header is being included, thus requiring the code to re-declare the generic GPIO interface in each GPIO header. Fix this. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-22tegra: gpio: fix null label regressionMarcel Ziswiler
Fix Tegra GPIO driver to not crash resp. misbehave upon requesting GPIOs with an empty aka NULL label. As the driver uses exclusively the label to check for reservation status actually supplying one is mandatory! This fixes a regression introduced by commit: 2fccd2d96badcdf6165658a99771a4c475586279 tegra: Convert tegra GPIO driver to use driver model Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
2014-09-24kconfig: add blank Kconfig filesMasahiro Yamada
This would be useful to start moving various config options. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
2014-09-10tegra: Convert tegra GPIO driver to use driver modelSimon Glass
This is an implementation of GPIOs for Tegra that uses driver model. It has been tested on trimslice and also using the new iotrace feature. The implementation uses a top-level GPIO device (which has no actual GPIOS). Under this all the banks are created as separate GPIO devices. The GPIOs are named as per the Tegra datasheet/header files: A0..A7, B0..B7, ..., Z0..Z7, AA0..AA7, etc. Since driver model is not yet available before relocation, or in SPL, a special function is provided for seaboard's SPL code. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-07-28Merge branch 'u-boot-sunxi/master' into 'u-boot-arm/master'Albert ARIBAUD
2014-07-23dm: gpio: Don't use the driver model uclass for SPLSimon Glass
Driver model does not support SPL yet, so we should not use the GPIO uclass for SPL. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-07-18sunxi: add gpio driverIan Campbell
This patch enables CONFIG_CMD_GPIO for the Allwinner (sunxi) platform as well as providing the common gpio API (gpio_request/free, direction in/out, get/set etc). Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Ma Haijun <mahaijuns@gmail.com> Signed-off-by: Oliver Schinagl <oliver@schinagl.nl> Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: Henrik Nordström <henrik@henriknordstrom.net> Cc: Tom Cubie <Mr.hipboi@gmail.com> Acked-by: Hans de Goede <hdegoede@redhat.com>
2014-07-04gpio: spear_gpio: Fix gpio_set_value() implementationAxel Lin
In current gpio_set_value() implementation, it always sets the gpio control bit no matter the value argument is 0 or 1. Thus the GPIOs never set to low. This patch fixes this bug. The address bus is used as a mask on read/write operations, so that independent software drivers can set their GPIO bits without affecting any other pins in a single write operation. Thus we don't need a read-modify-write to update the register. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Stefan Roese <sr@denx.de> Reviewed-by: Vipin Kumar <vipin.kumar@st.com> Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
2014-06-20dm: Use case-insensitive comparison for GPIO banksSimon Glass
We want 'N0' and 'n0' to mean the same thing, so ensure that case is not considered when naming GPIO banks. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-20dm: Rename struct device_id to udevice_idSimon Glass
It is best to avoid having any occurence of 'struct device' in driver model, so rename to achieve this. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-05-30Merge branch 'master' of git://git.denx.de/u-boot-armTom Rini
2014-05-27dm: rename device struct to udeviceHeiko Schocher
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>
2014-05-27gpio: at91: add sanity check for the NULL pointerWu, Josh
We need check the NULL pointer as at91_pio_get_port() may return NULL. Also print a error message when at91_pio_get_port() failed otherwise we cannot notice the failure. Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2014-05-15Merge branch 'u-boot-tegra/master' into 'u-boot-arm/master'Albert ARIBAUD
2014-05-13ARM: tegra: add GPIO initialization table functionStephen Warren
The HW-defined procedure for booting Tegra requires that some pins be set up as GPIOs immediately at boot in order to avoid glitches on those pins, when the pinmux is programmed. Add a feature to the GPIO driver which executes a GPIO configuration table. Board files will use this to implement the correct HW initialization procedure. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2014-05-13S5P: Exynos: Add GPIO pin numbering and rename definitionsAkshay Saraswat
This patch includes following changes : * Adds gpio pin numbering support for EXYNOS SOCs. To have consistent 0..n-1 GPIO numbering the banks are divided into different parts where ever they have holes in them. * Rename GPIO definitions from GPIO_... to S5P_GPIO_... These changes were done to enable cmd_gpio for EXYNOS and cmd_gpio has GPIO_INPUT same as s5p_gpio driver and hence getting a error during compilation. * Adds support for name to gpio conversion in s5p_gpio to enable gpio command EXYNOS SoCs. Function has been added to asm/gpio.h to decode the input gpio name to gpio number. Example: SMDK5420 # gpio set gpa00 Signed-off-by: Leela Krishna Amudala <l.krishna@samsung.com> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com> Acked-by: Przemyslaw Marczak <p.marczak@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2014-03-04sandbox: Convert GPIOs to use driver modelSimon Glass
Convert sandbox over to use driver model GPIOs. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-04dm: Add GPIO support and testsSimon Glass
Add driver model support for GPIOs. Since existing GPIO drivers do not use driver model, this feature must be enabled by CONFIG_DM_GPIO. After all GPO drivers are converted over we can perhaps remove this config. Tests are provided for the sandbox implementation, and are a sufficient sanity check for basic operation. The GPIO uclass understands the concept of named banks of GPIOs, with each GPIO device providing a single bank. Within each bank the GPIOs are numbered using an offset from 0 to n-1. For example a bank named 'b' with 20 offsets will provide GPIOs named b0 to b19. Anonymous GPIO banks are also supported, and are just numbered without any prefix. Each time a GPIO driver is added to the uclass, the GPIOs are renumbered accordinging, so there is always a global GPIO numbering order. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Pavel Herrmann <morpheus.ibis@gmail.com> Signed-off-by: Viktor Křivák <viktor.krivak@gmail.com> Signed-off-by: Tomas Hlavacek <tmshlvck@gmail.com>
2014-03-04sizes.h - consolidate for all architecturesAlexey Brodkin
Copied from Linux sources "include/linux/sizes.h" commit 413541dd66d51f791a0b169d9b9014e4f56be13c Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Tom Rini <trini@ti.com> Cc: Stefan Roese <sr@denx.de> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Acked-by: Tom Rini <trini@ti.com> Acked-by: Stefan Roese <sr@denx.de> [trini: Add bcm Kona platforms to the patch] Signed-off-by: Tom Rini <trini@ti.com>
2014-02-22gpio: kona: Add Kona gpio driverDarwin Rambo
Add support for the Kona GPIO controller found on Broadcom mobile SoCs. Signed-off-by: Darwin Rambo <drambo@broadcom.com> Reviewed-by: Steve Rae <srae@broadcom.com> Reviewed-by: Markus Mayer <markus.mayer@linaro.org> Reviewed-by: Tim Kryger <tkryger@linaro.org>
2014-02-03s5p: gpio: change gpio coding method for s5p gpio.Przemyslaw Marczak
Old s5p gpio coding method was not clean and was not working properly for all parts and banks. New method is clean and easy to extend. Gpio coding mask: 0x000000ff - pin number 0x00ffff00 - bank offset 0xff000000 - part number Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2014-01-06Merge branch 'u-boot-imx/master' into 'u-boot-arm/master'Albert ARIBAUD
Conflicts: include/micrel.h The conflict above was trivial, caused by four lines being added in both branches with different whitepace.
2013-12-09at91: add new gpio pin definitionsAndreas Bießmann
This patch define new names for GPIO pins on at91 devices. Follow up patches will convert the whole infrastructure to use these new definitions. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> Tested-by: Bo Shen <voice.shen@atmel.com>
2013-11-13mxs_gpio: fix the handling in gpio_direction_output()Michael Heimpold
Setting the direction and an output value should be done by 1) set the desired output value, 2) switch to output. If this is done in the inverse order, there can be a glitch on the GPIO line. This patch fixes this by using the order as described above. Signed-off-by: Michael Heimpold <mhei@heimpold.de> Acked-by: Stefano Babic <sbabic@denx.de>
2013-11-08Add support for SX151x SPI GPIO ExpandersViktar Palstsiuk
Signed-off-by: Viktar Palstsiuk <viktar.palstsiuk@promwad.com>
2013-11-04Merge branch 'master' of git://git.denx.de/u-boot-blackfinTom Rini
Easy to resolve conflict on the GPIO change. Conflicts: arch/blackfin/cpu/Makefile Signed-off-by: Tom Rini <trini@ti.com>
2013-11-04blackfin: Move machine specific gpio_port_t structure back to blackfin arch ↵Steven Miao
folder. The gpio register mappings are different among blackfin processors. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2013-10-31drivers: convert makefiles to Kbuild styleMasahiro Yamada
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-09-04Merge branch 'u-boot-atmel/master' into 'u-boot-arm/master'Albert ARIBAUD
2013-08-22gpio: atmel: add copyright and remove error header infoBo Shen
Signed-off-by: Bo Shen <voice.shen@atmel.com> Acked-by: Jens Scharsig <js_at_ng@scharsoft.de> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2013-08-22gpio: atmel: add gpio common API supportBo Shen
add gpio common API support for gpio command Signed-off-by: Bo Shen <voice.shen@atmel.com> [fix unnecessary cast] Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2013-08-22gpio: atmel: fix code to use pointer for pio portBo Shen
fix code to use pointer for pio port as the warning message suggested remove the warning message Signed-off-by: Bo Shen <voice.shen@atmel.com> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2013-08-19SPDX-License-Identifier: fixing some problematic GPL-2.0 filesWolfgang Denk
Unlike the other patches in this series so far, this commit fixes a ambiguity in the license terms for some OMAP files: the code was originally derived from the Linux kernel sources, where it was clearly marked as GPL-2.0 (i. e. without the "or later" part), but the U-Boot version had a GPL-2.0+ file header added, apparently without permission / relicensing from the original authors of the code. Insert a GPL-2.0 SPDX-License-Identifier to fix this. Signed-off-by: Wolfgang Denk <wd@denx.de> cc: Tom Rix <Tom.Rix@windriver.com> Cc: Tom Rini <trini@ti.com> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Acked-by: Tom Rini <trini@ti.com>
2013-08-18Merge branch 'master' of git://88.191.163.10/u-boot-armTom Rini
Fixup an easy conflict over adding the clk_get prototype and USB_OTG defines for am33xx having moved. Conflicts: arch/arm/include/asm/arch-am33xx/hardware.h Signed-off-by: Tom Rini <trini@ti.com>
2013-08-16gpio: pca953x: Use ARRAY_SIZE instead of reinventing itAxel Lin
Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Thierry Reding <thierry.reding@gmail.com> Acked-by: Marek Vasut <marex@denx.de>
generated by cgit (git 2.34.1) at 2024-12-27 14:33:22 +0000