This converts the AT91 pin control driver to register its
chained irq handler and irqchip using the helpers in the
gpiolib core.
Signed-off-by: Alexander Stein <alexanders83@web.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The kerneldoc for struct tegra_pingroup didn't describe all of the fields
in the struct. Add some extra kerneldoc to fix that.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When an attempt is made to configure an unsupported option on a pin,
print the DT property name of that option, so it's easier to debug
what the problem is.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The range of npins and function ID values is small enough to fit into a
u8. Use this type rather than unsigned to shrink the pinmux data tables.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The fsafe value in the pingroup data tables is only used to implement
tegra_pinctrl_disable(). The only reason this function is called is when
dynamically switching between pinmux states, i.e. when disabling the old
state before programming the new state. It's simpler to have the new
target state define the expected value of each pin (and all current DTs
do that). This also gives more flexibility, since it allows individual
boards explicit control over the "inactive" mux function for each pin,
rather than requiring it to be an SoC-specific value. Assuming this, we
can get rid of the fsafe value from the driver completely, thus saving
some more space in the driver tables.
While re-writing the content of tegra124_pingroups[], fix the indentation
to use a TAB instead of spaces.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Any SoC which supports the einput, odrain, lock, ioreset, or rcv_sel
options has the relevant HW register fields in the same register as the
mux function selection. Similarly, the drvtype option is always in the
drive register, if it is supported at all. Hence, we don't need to have
struct *_reg fields in the pin group table to define which register and
bank to use for those options. Delete this to save space in the driver's
data tables.
However, many of those options are not supported on all SoCs, or not
supported on some pingroups. We need a way to detect when they are
supported. Previously, this was indicated by setting the struct *_reg
field to -1. With the struct *_reg fields removed, we use the struct
*_bit fields for this purpose instead. The struct *_bit fields need to
be expanded from 5 to 6 bits in order to store a value outside the valid
HW bit range of 0..31.
Even without removing the struct *_reg fields, we still need to add code
to validate the struct *_bit fields, since some struct *_bit fields were
already being set to -1, without an option-specific struct *_reg field to
"guard" them. In other words, before this change, the pinmux driver might
allow some unsupported options to be written to HW.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add the muxing for the last missing i2c rcar core. Fix the sorting for
SH_PFC_PIN_NAMED while we are here.
Signed-off-by: Wolfram Sang <wsa@sang-engineering.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
With debug enabled we get better readability dumps of the mux_mode register if
we use hexadecimal format instead:
imx6sl-pinctrl 20e0000.iomuxc: MX6SL_PAD_FEC_REF_CLK: 0x10 0x0001b0a8
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The A31 SoC define a reset line for the R_PIO block which needs to be
deasserted.
Try to retrieve a reset control and deassert if one was found.
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The A31 SoC provides both PL and PM pio bank through the R_PIO block.
These pins all support gpio function and can bbe assigned to system
peripherals (like TWI, P2WI, JTAG, ...)
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add support for multiple pin controller instances.
First remove the static definition of the sunxi gpio chip struct and fill
the dynamically struct instead.
Then define a new pin_base field in the sunxi_pinctrl_desc which will be
used to specify the gpiochip base pin.
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Disable the clk when failing to probe the pin controller device.
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Check the clk_prepare_enable return value to avoid false positive probe.
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch completes the one that used ARRAY_SIZE for STiH407 and STiH416
for setting ninput_delays and noutput_delays fields.
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch adds const qualifier where applicable.
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Define __PINCTRL_LANTIQ_H to prevent multiple inclusion.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
It's only referenced in this file, make it static.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The DU parallel interface ODDF signal is optional, move it out of the
HSYNC/VSYNC group into a group of its down. The CDE and DISP signals are
independent, split them to two different groups.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This driver is only useful on MSM8x74, so let the driver depend on
ARCH_QCOM but allow compile coverage testing.
The main benefit is that the driver isn't available to be selected for
machines that don't have the matching hardware.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This adds pinctrl definitions for the GPIO pins of the TLMM v2 block in the
Qualcomm APQ8064 platform.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The various pins may have different number of functions defined, so make this
number definable per pin instead of just increasing it to the largest one for
all of the platforms.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This lets the gpiolib core handle the irqchip set-up and
chained IRQ on the primary (behind the mux) IRQ chip in
the st pinctrl driver.
Default irq type is set to level low at irqchip add time.
The v1 was sent by Linus
(https://lkml.org/lkml/2014/4/4/287).
Two changes were necessary to make it to work properly
on STiH416:
1 - dev reference was not passed to the gpio_chip
struct, causing a panic.
2 - gpiochip_irqchip_add passed IRQ_TYPE_NONE as
default type, which caused lot of warnings at
init time. I choose IRQ_TYPE_LEVEL_LOW as default.
Cc: Srinivas Kandagatla <srinivas.kandagatla@gmail.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Maxime COQUELIN <maxime.coquelin@st.com>
In the mass-conversion to the new irqchip callbacks, this
in-transit IRQ support was missed. Fix it.
Cc: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Cc: Maxime COQUELIN <maxime.coquelin@st.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
To be consistent with other Broadcom drivers, the Broadcom Capri pinctrl
driver and its related CONFIG option are renamed to bcm281xx.
Devicetree compatible string and binding documentation use
"brcm,bcm11351-pinctrl" to match the machine binding here:
Documentation/devicetree/bindings/arm/bcm/bcm11351.txt
This driver supports pinctrl on BCM11130, BCM11140, BCM11351, BCM28145
and BCM28155 SoCs.
Signed-off-by: Sherman Yin <syin@broadcom.com>
Reviewed-by: Matt Porter <mporter@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acking interrupts are done differently between on v2 and v3, so add an extra
attribute to the pingroup struct to let the platform definitions control this.
Also make sure to start dual edge detection by detecting the rising edge.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The first half of pinbank 0 only has one muxing function (as gpios) and
does not have a special mux-register.
Therefore ensure that no other mux function can be selected and also do not
write to a non-existent register.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
In a following change, rockchip_set_mux gets the possibility to fail.
Therefore add a return value to it and honor error codes in functions
using rockchip_set_mux.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The correct value of .mux_offset for rk3188 seems to be 0x60
instead of 0x68.
Heiko adds:
GPIO0 only has the second two IOMUX registers:
- GRF_GPIO0C_IOMUX at 0x68
- GRF_GPIO0D_IOMUX at 0x6c
which I guess is where my mistake comes from.
It looks like there does no iomux register exist at all
for the first 16 pins.
In any case, the current number is wrong, and the 0x60
offset is the correct one, but I guess we need to
determine what the affected pins do - do they always have a
gpio mux or such?
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
- Merged in a branch of irqchip changes from Thomas
Gleixner: we need to have new callbacks from the
irqchip to determine if the GPIO line will be eligible
for IRQs, and this callback must be able to say "no".
After some thinking I got the branch from tglx and
have switched all current users over to use this.
- Based on tglx patches, we have added some generic
irqchip helpers in the gpiolib core. These will
help centralize code when GPIO drivers have simple
chained/cascaded IRQs. Drivers will still define
their irqchip vtables, but the gpiolib core will
take care of irqdomain set-up, mapping from local
offsets to Linux irqs, and reserve resources by
marking the GPIO lines for IRQs.
- Initially the PL061 and Nomadik GPIO/pin control
drivers have been switched over to use the new
gpiochip-to-irqchip infrastructure with more
drivers expected for the next kernel cycle. The
factoring of just two drivers still makes it worth
it so it is already a win.
- A new driver for the Synopsys DesignWare APB GPIO
block.
- Modify the DaVinci GPIO driver to be reusable also
for the new TI Keystone architecture.
- A new driver for the LSI ZEVIO SoCs.
- Delete the obsolte tnetv107x driver.
- Some incremental work on GPIO descriptors: have
gpiod_direction_output() use a logical level,
respecting assertion polarity through ACTIVE_LOW
flags, adding gpiod_direction_output_raw() for the
case where you want to set that very value. Add
gpiochip_get_desc() to fetch a GPIO descriptor from
a specific offset on a certain chip inside driver
code.
- Switch ACPI GPIO code over to using
gpiochip_get_desc() and get rid of gpio_to_desc().
- The ACPI GPIO event handling code has been reworked
after encountering an actual real life implementation.
- Support for ACPI GPIO operation regions.
- Generic GPIO chips can now be assigned labels/names
from platform data.
- We now clamp values returned from GPIO drivers to
the boolean [0,1] range.
- Some improved documentation on how to use the polarity
flag was added.
- The a large slew of incremental driver updates and
non-critical fixes. Some targeted for stable.
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Merge tag 'gpio-v3.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull bulk of gpio updates from Linus Walleij:
"A pretty big chunk of changes this time, but it has all been on
rotation in linux-next and had some testing. Of course there will be
some amount of fixes on top...
- Merged in a branch of irqchip changes from Thomas Gleixner: we need
to have new callbacks from the irqchip to determine if the GPIO
line will be eligible for IRQs, and this callback must be able to
say "no". After some thinking I got the branch from tglx and have
switched all current users over to use this.
- Based on tglx patches, we have added some generic irqchip helpers
in the gpiolib core. These will help centralize code when GPIO
drivers have simple chained/cascaded IRQs. Drivers will still
define their irqchip vtables, but the gpiolib core will take care
of irqdomain set-up, mapping from local offsets to Linux irqs, and
reserve resources by marking the GPIO lines for IRQs.
- Initially the PL061 and Nomadik GPIO/pin control drivers have been
switched over to use the new gpiochip-to-irqchip infrastructure
with more drivers expected for the next kernel cycle. The
factoring of just two drivers still makes it worth it so it is
already a win.
- A new driver for the Synopsys DesignWare APB GPIO block.
- Modify the DaVinci GPIO driver to be reusable also for the new TI
Keystone architecture.
- A new driver for the LSI ZEVIO SoCs.
- Delete the obsolte tnetv107x driver.
- Some incremental work on GPIO descriptors: have
gpiod_direction_output() use a logical level, respecting assertion
polarity through ACTIVE_LOW flags, adding gpiod_direction_output_raw()
for the case where you want to set that very value. Add
gpiochip_get_desc() to fetch a GPIO descriptor from a specific
offset on a certain chip inside driver code.
- Switch ACPI GPIO code over to using gpiochip_get_desc() and get rid
of gpio_to_desc().
- The ACPI GPIO event handling code has been reworked after
encountering an actual real life implementation.
- Support for ACPI GPIO operation regions.
- Generic GPIO chips can now be assigned labels/names from platform
data.
- We now clamp values returned from GPIO drivers to the boolean [0,1]
range.
- Some improved documentation on how to use the polarity flag was
added.
- a large slew of incremental driver updates and non-critical fixes.
Some targeted for stable"
* tag 'gpio-v3.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (80 commits)
gpio: rcar: Add helper variable dev = &pdev->dev
gpio-lynxpoint: force gpio_get() to return "1" and "0" only
gpio: unmap gpio irqs properly
pch_gpio: set value before enabling output direction
gpio: moxart: Actually set output state in moxart_gpio_direction_output()
gpio: moxart: Avoid forward declaration
gpio: mxs: Allow for recursive enable_irq_wake() call
gpio: samsung: Add missing "break" statement
gpio: twl4030: Remove redundant assignment
gpio: dwapb: correct gpio-cells in binding document
gpio: iop: fix devm_ioremap_resource() return value checking
pinctrl: coh901: convert driver to use gpiolib irqchip
pinctrl: nomadik: convert driver to use gpiolib irqchip
gpio: pl061: convert driver to use gpiolib irqchip
gpio: add IRQ chip helpers in gpiolib
pinctrl: nomadik: factor in platform data container
pinctrl: nomadik: rename secondary to latent
gpio: Driver for SYSCON-based GPIOs
gpio: generic: Use platform_device_id->driver_data field for driver flags
pinctrl: coh901: move irq line locking to resource callbacks
...
functionality this time, just incremental driver updates:
- A large refactoring of the MVEBU (Marvell) driver.
- A large refactoring of the Tegra (nVidia) driver.
- GPIO interrupt including soft edges support in the
STi driver.
- Misc updates to PFC (Renesas), AT91, ADI2 (Blackfin),
pinctrl-single, sirf (CSR), msm (Qualcomm), Exynos (Samsung),
sunxi (AllWinner), i.MX (Freescale), Baytrail.
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Merge tag 'pinctrl-v3.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control bulk changes from Linus Walleij:
"Pin control bulk changes for the v3.15 series, no new core
functionality this time, just incremental driver updates:
- A large refactoring of the MVEBU (Marvell) driver.
- A large refactoring of the Tegra (nVidia) driver.
- GPIO interrupt including soft edges support in the STi driver.
- Misc updates to PFC (Renesas), AT91, ADI2 (Blackfin),
pinctrl-single, sirf (CSR), msm (Qualcomm), Exynos (Samsung), sunxi
(AllWinner), i.MX (Freescale), Baytrail"
* tag 'pinctrl-v3.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (72 commits)
pinctrl: tegra: add some missing Tegra114 entries
pinctrl: tegra: fix some mistakes in Tegra124
pinctrl: msm: fix up out-of-order merge conflict
pinctrl: st: Fix error check for of_irq_to_resource usage
pinctrl: tegra: consistency cleanup
pinctrl: tegra: dynamically calculate function list of groups
pinctrl: tegra: init Tegra20/30 at module_init time
pinctrl: st: Use ARRAY_SIZE instead of raw value for number of delays
pinctrl: st: add pinctrl support for the STiH407 SoC
pinctrl: st: Enhance the controller to manage unavailable registers
pinctrl: msm: Simplify msm_config_reg() and callers
pinctrl: msm: Remove impossible WARN_ON()s
pinctrl: msm: Replace lookup tables with math
pinctrl: msm: Drop OF_IRQ dependency
pinctrl: msm: Drop unused includes
pinctrl: msm: Check for ngpios > MAX_NR_GPIO
pinctrl: msm: Silence recursive lockdep warning
pinctrl: mvebu: silence WARN to dev_warn
pinctrl: msm: drop wake_irqs bitmap
pinctrl-baytrail: add function mux checking in gpio pin request
...
This converts the COH901 pin control driver to register its
chained irq handler and irqchip using the helpers in the
gpiolib core.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This converts the Nomadik pin control driver to register its
chained irq handler and irqchip using the helpers in the
gpiolib core.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The old platform data struct is just a leftover from the times
when the driver was not probed exclusively from the device tree.
Factor this into the general state container and simplify the
probe path.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The "secondary irq" in the nomadik pin control driver is actually
not secondary (as in: can occur any time alongside the ordinary
irq), it is a latent IRQ. It is an IRQ that has occurred when
the system was in sleep state and has been cached in a special
register flagged from the low power management unit (PRCM).
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This switches the COH901 GPIO driver over to using the
.request_resources() and .release_resources() callbacks from
the irqchip vtable and separate the calls from the .enable()
and .disable() callbacks as the latter cannot really say no
to a request, whereas the resource callbacks can.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This switches all GPIO and pin control drivers with irqchips
that were using .startup() and .shutdown() callbacks to lock
GPIO lines for IRQ usage over to using the .request_resources()
and .release_resources() callbacks just introduced into the
irqchip vtable.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add some missing pin and drive group definitions to the driver. These
are all defined in the TRM, but missing from the driver for some reason.
Fix a couple of mistakes in the drive group definitions.
Much of the diff to tegra114_groups[] is an indentation change due to one
of the new group names being long. git diff/show -w will highlight this.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
A couple of pairs of pin group names were swapped in the table. This
caused the wrong register to be programmed. Luckily, this had little
effect, if any, since the swapped pins were likely to be programmed
identically.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Commit 051a58b462
"pinctrl: msm: Simplify msm_config_reg() and callers"
removed the local "reg" variable in the msm_config_reg()
function, but the earlier
commit ed118a5fd9
"pinctrl-msm: Support output-{high,low} configuration"
introduced a new switchclause using it.
Fix this up by removing the offending register assignment.
Reported-by: Kbuild test robot <fengguang.wu@intel.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch fixes an error check while using of_irq_to_resource.
of_irq_to_resource returns non-zero interrupt number on success and zero
on error. The driver was using error check is wrong way.
Without this patch the driver will configure interrupt zero if there is
no interrupt specified in the node.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Fix Tegra30/114/124 pinmux drivers consistency issues.
* Sort all lists of the same object type (e.g. #defines for pins, and
the array that defines their names) in the same order.
* Whitespace fixes.
* Consistency in layout between the 3 drivers.
These driver files were also auto-generated, which should allow us to
make e.g. the U-Boot drivers completely consistent with the kernel in
the future:-)
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The per-SoC data structures for Tegra pinctrl stored some information
in a redundant way. Specifically, the list of groups that each function
could be muxed onto was stored once explicitly, and also as part of the
definition of each group. Eliminate this redundancy, and calculate each
function's list of valid groups at pinctrl probe time. This removes
thousands of lines of code from the pinctrl driver and ~16K from the
vmlinux binary size, and adds only about 500uS to the boot process (on
Tegra30; newer SoCs will likely be faster still).
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Alexander Stein