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path: root/drivers/gpio
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2016-03-17gpio: Use const where possibleSimon Glass
Some functions do not change the struct gpio_desc parameter. Update these to use const so this is clear. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-17gpio: Add a function to obtain a GPIO vector valueSimon Glass
We can use GPIOs as binary digits for reading 'strapping' values. Each GPIO is assigned a single bit and can be set high or low on the circuit board. We already have a legacy function for reading these values. Add one that supports driver model. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-14dm: Use uclass_first_device_err() where it is usefulSimon Glass
Use this new function in places where it simplifies the code. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-02-29gpio: uniphier: add driver for UniPhier GPIO controllerMasahiro Yamada
This GPIO controller device is used on UniPhier SoCs. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
2016-02-24stm32: add support for stm32f7 & stm32f746 discovery boardVikas Manocha
This patch adds support for stm32f7 family & stm32f746 board. Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
2016-02-24gpio: stm32_gpio: move base addresses to the soc fileVikas Manocha
Base addresses for GPIOs could be different for different socs, this patch moves the base addresses from driver to the soc specific location. Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
2016-02-24gpio: stm32_gpio: move clock config from driver to boardVikas Manocha
This patch removes the gpio clock enable from gpio driver & move it in the board code, making it possible to use the gpio driver with other socs. Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
2016-02-16tegra: gpio: Show the GPIO value for outputsSimon Glass
The tegra GPIO controller has two ways of reading the value of a GPIO. It can supply the 'input' value (which is the value read from the pin) and the 'output' value (which is the value being driven from the pin. With a GPIO set to output mode, the 'input' value is always low which is not very useful. This has the unfortunate result that setting a GPIO high still leaves it showing as low in the 'gpio status' command. Adjust the driver to check which direction the GPIO is set to, then read the value from the appropriate register: 'input' for input GPIOs, 'output' for output GPIOs. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-02-08Merge branch 'agust@denx.de' of git://git.denx.de/u-boot-stagingTom Rini
2016-02-06Use correct spelling of "U-Boot"Bin Meng
Correct spelling of "U-Boot" shall be used in all written text (documentation, comments in source files etc.). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Heiko Schocher <hs@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Minkyu Kang <mk7.kang@samsung.com>
2016-02-05x86: ich6_gpio: Convert to use proper DM APIBin Meng
At present this GPIO driver still uses the legacy PCI API. Now that we have proper PCH drivers we can use those to obtain the information we need. While the device tree has nodes for the GPIO peripheral it is not in the right place. It should be on the PCI bus as a sub-peripheral of the PCH device. Update the device tree files to show the GPIO controller within the PCH, so that PCI access works as expected. This also adds '#address-cells' and '#size-cells' to the PCH node. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
2016-02-02dm: vybrid_gpio: Drop legacy codeBhuvanchandra DV
All boards using this driver are with device tree support, hence drop the legacy code in driver to have a pure DT solution. Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-02-01drivers: gpio: add driver for Microchip PIC32 GPIO controller.Purna Chandra Mandal
In PIC32 GPIO controller is part of PIC32 pin controller. PIC32 has ten independently programmable ports and each with multiple pins. Each of these pins can be configured and used as GPIO, provided they are not in use for other peripherals. Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2016-01-25bug.h: move BUILD_BUG_* defines to include/linux/bug.hMasahiro Yamada
BUILD_BUG_* macros have been defined in several headers. It would be nice to collect them in include/linux/bug.h like Linux. This commit is cherry-picking useful macros from include/linux/bug.h of Linux 4.4. I did not import BUILD_BUG_ON_MSG() because it would not work if it is used with include/common.h in U-Boot. I'd like to postpone it until the root cause (the "error()" macro in include/common.h causes the name conflict with "__attribute__((error()))") is fixed. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2016-01-21rockchip: gpio: Implement the get_function() methodSimon Glass
Provide this method so that 'gpio status' works fully. It now shows whether a pin is used for input, output or some other function. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-21rockchip: gpio: Read the GPIO value correctlySimon Glass
This function should return 0 or 1, not a mask. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-20dm: gpio: Allow the uclass to work without printf()Simon Glass
For SPL we don't really need sprintf() and with tiny-printf this is not available. Allow this to be dropped in SPL when using tiny-printf. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-01-19Add more SPDX-License-Identifier tagsTom Rini
In a number of places we had wordings of the GPL (or LGPL in a few cases) license text that were split in such a way that it wasn't caught previously. Convert all of these to the correct SPDX-License-Identifier tag. Signed-off-by: Tom Rini <trini@konsulko.com>
2016-01-07gpio: mxs: add name_to_gpio() functionMåns Rullgård
Override the default name_to_gpio() function with one that accepts strings of the form bank:pin. If a colon is present in the provided name, it behaves like the default version. This lets the "gpio" command work with sane names rather than requiring the user to enter the bank/pin composite in decimal. Signed-off-by: Mans Rullgard <mans@mansr.com> Reviewed-by: Stefano Babic <sbabic@denx.de>
2015-12-05Change e-mail address of Kamil LulkoKamil Lulko
Signed-off-by: Kamil Lulko <kamil.lulko@gmail.com>
2015-11-30gpio: atmel: Add the PIO4 driver supportWenyou Yang
The PIO4 is introduced from SAMA5D2, as a new version for Atmel PIO controller. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
2015-11-18altera_pio: change ioremap to map_physmemThomas Chou
Change ioremap() to map_physmem(), as it is more used in u-boot. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Reviewed-by: Marek Vasut <marex@denx.de>
2015-11-12i2c: Fix pca953x endianess issueDirk Eibach
By reading 2 consecutive bytes from i2c to an u16 value we have an endianess issue. Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
2015-10-23nios2 : convert altera_pio to driver modelThomas Chou
Convert altera_pio to driver model. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Acked-by: Chin Liang See <clsee@altera.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-10-22drivers: gpio: omap: add support for parsing additional gpio parametersMugunthan V N
With DM_GPIO, gpio parameters like ACTIVE_(LOW/HIGH) are to be parsed in xlate gpio drivers-ops. Since xlate is not implemented in omap_gpio driver, the driver considers all gpio to be ACTIVE_HIGH which is the default case and fails to return actual gpio status for ACTIVE_LOW gpios. So adding .xlate ops to omap_gpio. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-10-20sunxi: power: Unify axp pmic function namesHans de Goede
Stop prefixing the axp functions for setting voltages, etc. with the model number, there ever is only one pmic driver built into u-boot, this allows simplifying the callers. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-10-03gpio: s5p: call: dev_get_addr() instead of fdtdec_get_addr()Przemyslaw Marczak
After rework in lib/fdtdec.c, the function fdtdec_get_addr() doesn't work for nodes with #size-cells property set to 0. To get GPIO's 'reg' property, the code should use one of: fdtdec_get_addr_size_auto_no/parent() function. Fortunately dm core provides a function to get the property. This commit reworks function gpio_exynos_bind(), to properly use dev_get_addr() for GPIO device. This prevents setting a wrong base register for Exynos GPIOs. Tested on: Odroid U3/X2, Trats, Trats2, Odroid XU3, Snow (by Simon). Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
2015-10-02gpio: tegra: use named constantsStephen Warren
In order to make it clear what the parameters to set_config() and set_direction() mean, and similarly for the return values from the respective get_*(), define named constants for these values. Disassembly shows no diff in the generated code, except that the order of the code in the branches of tegra_gpio_get_function() gets modified without affecting behaviour. Suggested-by: Tom Warren <twarren@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-10-02gpio: tegra: remove unused typeStephen Warren
These enum values aren't used anywhere. Remove them. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-10-02ARM: tegra: don't enable GPIOs until direction is setStephen Warren
Tegra's GPIO driver currently enables pins as GPIO as soon as they're requested. This is not safe, since the desired direction and output value are not yet known. This could cause a glitch on the output pins between gpio_request() and gpio_direction_*(), depending on what values happen to be in the GPIO controller's in/out and out-value registers vs. the final desired configuration. To solve this, defer enabling pins as GPIOs until some gpio_direction_*() is invoked, and the desired configuration is explicitly programmed. In theory this change could cause regressions, if code exists that claims a GPIO, never explicitly sets a direction, and then gets/sets the GPIO value based on that assumption. However, I've read through all the Tegra- related board files and device drivers that touch GPIOs and I do not see such buggy code anywhere. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-10-02ARM: tegra: fix GPIO init table programmingStephen Warren
Tegra's gpio_config_table() currently uses common GPIO APIs. These used to work without requesting the GPIO, but since commit 2fccd2d96bad "tegra: Convert tegra GPIO driver to use driver model" no longer do so. This prevents any of the GPIO initialization table from being applied to HW. Fix gpio_config_table() to directly program the HW to solve this. Fixes: 2fccd2d96bad ("tegra: Convert tegra GPIO driver to use driver model") Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-09-13Merge branch 'rmobile' of git://git.denx.de/u-boot-shTom Rini
2015-09-11gpio: lpc32xx: fix issues with port3 gpioSylvain Lemieux
The current simplify lpc32xx gpio driver implementation assume a maximum of 32 GPIO per port; there are a total of 22 GPI, 24 GPO and 6 GPIO to managed on port 3. Update the driver to fix the following: 1) When requesting GPI_xx and GPO_xx on port 3 (xx is the same number) the second call to "gpio_request" will return -EBUSY. 2) The status of GPO_xx pin report the status of the corresponding GPI_xx pin when using the "gpio status" command. 3) The gpio driver may setup the direction register for the wrong gpio when calling "gpio_direction_input" (GPI_xx) or "gpio_direction_output" (GPO_xx) on port 3; the call to the direction is require to use the "gpio status" command. The following change were done in the driver: 1) port3 GPI are cache in a separate 32 bits in the array. 2) port3 direction register written only for GPIO pins. 3) port3 GPO & GPIO (as output) are read using "p3_outp_state". 4) LPC32XX_GPI_P3_GRP updated to match the change. Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
2015-09-03Merge git://git.denx.de/u-boot-rockchipTom Rini
2015-09-02rockchip: gpio: Add rockchip GPIO driverSimon Glass
This supports RK3288 at present. It does not implement functions or support for pull up/down. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-09-02imx: mxc_gpio: add support for imx7d SoCAdrian Alonso
* Add mxc_gpio support for imx7d SoC * Use CONFIG_MX7 to extend mxc gpio driver support for imx7d Signed-off-by: Peng Fan <Peng.Fan@freescale.com> Signed-off-by: Adrian Alonso <aalonso@freescale.com>
2015-08-31dm: Use dev_get_addr() where possibleSimon Glass
This is a convenient way for a driver to get the hardware address of a device, when regmap or syscon are not being used. Change existing callers to use it as an example to others. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2015-08-31gpio: sh-pfc: fix gpio input readVladimir Barinov
Fix gpio_read: gpio input (INDT) and gpio output (OUTDT) registers have different offset. gpio_read must be performed from INDT. Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2015-08-26x86: gpio: Tidy up gpio_ich6_get_base() and callersSimon Glass
This function can return an error. Correct the detection of this error so that it works even with large 32-bit addresses. The return value is set up for returning an I/O address but the function is also used to return a memory-mapped address. Adjust the return code to make this work. Also add a bit more debugging. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-08-26x86: gpio: Correct calls to _ich6_gpio_set_direction()Simon Glass
These calls seem to be incorrect. The function expects an I/O address but the existing callers pass the value at an I/O address. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-08-23gpio: Add DW APB GPIO driverMarek Vasut
Add driver for the DesignWare APB GPIO IP block. This driver is DM capable and probes from DT. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Simon Glass <sjg@chromium.org>
2015-08-18of: clean up OF_CONTROL ifdef conditionalsMasahiro Yamada
We have flipped CONFIG_SPL_DISABLE_OF_CONTROL. We have cleansing devices, $(SPL_) and CONFIG_IS_ENABLED(), so we are ready to clear away the ugly logic in include/fdtdec.h: #ifdef CONFIG_OF_CONTROL # if defined(CONFIG_SPL_BUILD) && !defined(SPL_OF_CONTROL) # define OF_CONTROL 0 # else # define OF_CONTROL 1 # endif #else # define OF_CONTROL 0 #endif Now CONFIG_IS_ENABLED(OF_CONTROL) is the substitute. It refers to CONFIG_OF_CONTROL for U-boot proper and CONFIG_SPL_OF_CONTROL for SPL. Also, we no longer have to cancel CONFIG_OF_CONTROL in include/config_uncmd_spl.h and scripts/Makefile.spl. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2015-08-14sunxi: gpio: Add support for the gpio banks which are part of the R-io clusterHans de Goede
sun6i and later have a couple of io-blocks which are shared between the main CPU core and the "R" cpu which is small embedded cpu which can be active while the main system is suspended. These gpio banks sit at a different mmio address then the normal banks, and have a separate devicetree node and compatible, this adds support for these banks to the sunxi-gpio code when built with device-model support. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-08-12gpio: omap: Drop 'method' parameterTom Rini
The "method" parameter was part of the original port of the driver from the kernel. At some point this may have been added to allow for future differentiation (as omap1 and omap2 have different GPIO IP blocks, so this wasn't an unreasonable thing to do). At this point however it's just extra overhead, so drop. Signed-off-by: Tom Rini <trini@konsulko.com>
2015-08-12dm: gpio: hi6220: Add a hi6220 GPIO driver model driver.Peter Griffin
This patch adds support for the GPIO perif found on hi6220 SoC. Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
2015-08-12drivers: hierarchize drivers Kconfig menuMasahiro Yamada
The menuconfig for drivers are getting more and more cluttered and unreadable because too many entries are displayed in a single flat menu. Use hierarchic menu for each category. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org> [trini: Update to apply again in a few places, drop USB hunk] Signed-off-by: Tom Rini <trini@konsulko.com>
2015-08-05dm: gpio: Check a GPIO is valid before using itSimon Glass
Since a gpio_desc is allowed to be invalid we should return an error indicating that the operation cannot be completed. This can happen if the GPIO is optional - e.g. some devices may have a reset line and some may not. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-08-05x86: Add some missing global_data declarations in files that use gdSimon Glass
Some files use global_data but don't declare it. Fix this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-02Merge branch 'master' of git://www.denx.de/git/u-boot-imxTom Rini
2015-08-02mxc: gpio add i.MX6UL supportPeng Fan
i.MX6UL does not have GPIO6/7, so do not include them for i.MX6UL. Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
generated by cgit (git 2.34.1) at 2024-12-26 11:52:21 +0000