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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
In special_gpio_free(), call unreserve() rather than reserve() to release gpio.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Setting the direction and an output value should be done by
First, set the desired output value.
Then, switch to output.
If this is done in the inverse order, like at the moment,
there can be a glitch on the GPIO line while switching first
the old output value and aftwards the new one.
Fix this by inverting the order of the direction/set_value
calls.
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Acked-by: Stefano Babic <sbabic@denx.de>
The omap_gpio driver is used by AM33XX, OMAP3/4, OMAP54XX and DRA7XX SoCs.
These SoCs have different gpio count but currently omap_gpio driver uses hard
coded 192 which is wrong.
This patch fixes this issue by:
1. Move define of OMAP_MAX_GPIO to all arch/arm/include/asm/arch-omap*/gpio.h.
2. Update gpio bank settings and enable GPIO modules 7 & 8 clocks for OMAP5.
Thanks for Lubomir Popov to provide valuable comments to fix this issue.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested-by: Lubomir Popov <lpopov@mm-sol.com>
Acked-by: Heiko Schocher <hs@denx.de>
Current code had writel arguments the wrong way around, fix it.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
The gpio spec for bf54x and bf60x differ a lot from the old gpio driver for bf5xx.
A lot of machine macros are used to accomodate both code in one gpio driver.
This patch split the old gpio driver and move new gpio2 support to the generic
gpio driver folder.
- To enable gpio2 driver, macro CONFIG_ADI_GPIO2 should be defined in the board's
config header file.
- The gpio2 driver supports bf54x, bf60x and future ADI processors, while the
older gpio driver supports bf50x, bf51x, bf52x, bf53x and bf561.
- All blackfin specific gpio function names are replaced by the generic gpio APIs.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Microblaze uses gpio which is connected to the system reset.
Currently gpio subsystem wasn't used for it.
Add gpio driver and change Microblaze reset logic to be done
via gpio subsystem.
There are various configurations which Microblaze can have
that's why gpio_alloc/gpio_alloc_dual(for dual channel)
function has been introduced and gpio can be allocated
dynamically.
Adding several gpios IP is also possible and supported.
For listing gpio configuration please use "gpio status" command
This patch also remove one compilation warning:
microblaze-generic.c: In function 'do_reset':
microblaze-generic.c:38:47: warning: operation on '*1073741824u'
may be undefined [-Wsequence-point]
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
In master we had already taken a patch to fix the davinci GPIO code for
CONFIG_SOC_DM646X and in u-boot-ti we have additional patches to support
DA830 (which is CONFIG_SOC_DA8XX && !CONFIG_SOC_DA850). Resolve these
conflicts manually and comment the #else/#endif lines for clarity.
Conflicts:
arch/arm/include/asm/arch-davinci/gpio.h
drivers/gpio/da8xx_gpio.c
Signed-off-by: Tom Rini <trini@ti.com>
The differences include the number of GPIOs and that one is
not required to set the pinmux on request.
Signed-off-by: Holger Hans Peter Freyther <holger@freyther.de>
The pinmux was generated from linux/arch/arm/mach-davinci/da830.c as of
kernel version 3.7.5. If the driver is used for the da850, then SoC
variant must be specified by CONFIG_SOC_DA850.
Signed-off-by: Tomas Novotny <tomas@novotny.cz>
Cc: Tom Rini <trini@ti.com>
We can generally trust the ICH to have GPIO Bank 0 (the first 32 pins) in the
same place across all versions. This change adds two more banks, for up to
96 GPIOS.
BUT:
- Not all chipsets have the same number of GPIOs
- Not all chipsets have the same number of GPIO banks
- Not all chipsets put the additional banks at the same offset from GPIOBASE
- There so many chipset variants that it's pretty much impossible to support
them all, or even keep track of the new ones.
So, although this adds suppport for the additional banks that seem to work
for the particular variants of CougarPoint Mobile chipsets that we've tried,
there's no chance it will support everything Intel produces. Good luck.
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
