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Copy the mach/at91_pio.h header locally and use it for pinctrl-at91.c. This
allows to remove the dependency on mach/at91_pio.h to be able to move at91 to
multiplatform.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This function actually operates on a gpio_chip, so its prefix should
reflect that fact for consistency with other functions defined in
gpio/driver.h.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When dumping pinconf information in debugfs, config arguments are only
printed when a unit is present and the argument is != 0. For parameters
like the slew rate, this does not work. The slew rate uses a driver
specific format for the argument, i.e. 0 can be a valid argument and a
unit is not provided for it.
For that reason, add a flag to enable printing the argument instead of
inferring it from the presence of a unit and the value of the argument.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The pinctrl config helpers make a separate copy of the configuration, so
callers must make sure to free any dynamically allocated memory that was
used to store it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
pinctrl-baytrail driver provides a proper ->remove()
method on its platform_driver definition, however there's
no way, currently, to unload the driver due to missing
module_exit(). This patch adds module_exit().
Signed-off-by: Felipe Balbi <balbi@ti.com>
Acked-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add pinmux support for GPIO for Vybrid (vf610) IOMUX controller.
This is needed since direction configuration is not part of the
GPIO module in Vybrid.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Even if a gpio pin is set to output, we still need to set INPUT_EN
functionality (by clearing INPUT_EN bit) to be able to read the pin's
level.
E.g. without this change, we'll always read low level state from sysfs.
Cc: <stable@vger.kernel.org> # v3.14+
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This change fixes below sparse error,
drivers/pinctrl/pinctrl-st.c:1515:31: error: incompatible types for operation (>)
drivers/pinctrl/pinctrl-st.c:1515:31: left side has type void [noderef] <asn:2>*irqmux_base
drivers/pinctrl/pinctrl-st.c:1515:31: right side has type int
Cc: Maxime Coquelin <maxime.coquelin@st.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
CC: Linus Walleij <linus.walleij@linaro.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
There is a missing MMC/SD pin for MCDATDIR2 which is routed as
alt B, add it to the MMC/SD pin group and functions.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The abx500 pin control driver supported a method of fetching the
generic config from a phandle to a separate node using the
"ste,config" as a phandle. This is not used in any device trees
and not documented in the bindings, so drop this support.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This converts the ABx500 pin controller and all associated device
trees to use the standard, generic config bindings for pin controllers.
There are no such device trees deployed in the wild so this is
safe to do to set a good example.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This converts the Nomadik pin controller and all associated device
trees to use the standard, generic config bindings for pin controllers.
There are no such device trees deployed in the wild so this is
safe to do to set a good example.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This converts the ABx500 pin controller and all associated device
trees to use the standard, generic mux bindings for pin controllers.
There are no such device trees deployed in the wild so this is
safe to do to set a good example.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This converts the Nomadik pin controller and all associated device
trees to use the standard, generic mux bindings for pin controllers.
There are no such device trees deployed in the wild so this is
safe to do to set a good example.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Direct irq en bit should be cleared for pads using io mode.
If not, the io based irq will never be detected.
However, this bit can sometimes be misconfigured (BIOS issue).
Force clearing of this bit in io mode and trigger a WARN.
Signed-off-by: Loic Poulain <loic.poulain@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
cycle:
- Increase the default ARCH_NR_GPIO from 256 to 512. This
was done to avoid having a custom <asm/gpio.h> header for
the x86 architecture - GPIO is custom and complicated
enough as it is already! We want to move to a radix to
store the descriptors going forward, and finally get rid
of this fixed array size altogether.
- Endgame patching of the gpio_remove() semantics initiated
by Abdoulaye Berthe. It is not accepted by the system that
the removal of a GPIO chip fails during e.g. reboot or
shutdown, and therefore the return value has now painfully
been refactored away. For special cases like GPIO expanders
on a hot-pluggable bus like USB, we may later add some
gpiochip_try_remove() call, but for the cases we have now,
return values are moot.
- Some incremental refactoring of the gpiolib core and ACPI
GPIO library for more descriptor usage.
- Refactor the chained IRQ handler set-up method to handle
also threaded, nested interrupts and set up the parent IRQ
correctly. Switch STMPE and TC3589x drivers to use this
registration method.
- Add a .irq_not_threaded flag to the struct gpio_chip, so
that also GPIO expanders that block but are still not
using threaded IRQ handlers.
- New drivers for the ARM64 X-Gene SoC GPIO controller.
- The syscon GPIO driver has been improved to handle the
"DSP GPIO" found on the TI Keystone 2 SoC:s.
- ADNP driver switched to use gpiolib irqchip helpers.
- Refactor the DWAPB driver to support being instantiated
from and MFD cell (platform device).
- Incremental feature improvement in the Zynq, MCP23S08,
DWAPB, OMAP, Xilinx and Crystalcove drivers.
- Various minor fixes.
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Merge tag 'gpio-v3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO changes from Linus Walleij:
"This is the bulk of GPIO changes for the v3.18 development cycle:
- Increase the default ARCH_NR_GPIO from 256 to 512. This was done
to avoid having a custom <asm/gpio.h> header for the x86
architecture - GPIO is custom and complicated enough as it is
already! We want to move to a radix to store the descriptors going
forward, and finally get rid of this fixed array size altogether.
- Endgame patching of the gpio_remove() semantics initiated by
Abdoulaye Berthe. It is not accepted by the system that the
removal of a GPIO chip fails during eg reboot or shutdown, and
therefore the return value has now painfully been refactored away.
For special cases like GPIO expanders on a hot-pluggable bus like
USB, we may later add some gpiochip_try_remove() call, but for the
cases we have now, return values are moot.
- Some incremental refactoring of the gpiolib core and ACPI GPIO
library for more descriptor usage.
- Refactor the chained IRQ handler set-up method to handle also
threaded, nested interrupts and set up the parent IRQ correctly.
Switch STMPE and TC3589x drivers to use this registration method.
- Add a .irq_not_threaded flag to the struct gpio_chip, so that also
GPIO expanders that block but are still not using threaded IRQ
handlers.
- New drivers for the ARM64 X-Gene SoC GPIO controller.
- The syscon GPIO driver has been improved to handle the "DSP GPIO"
found on the TI Keystone 2 SoC:s.
- ADNP driver switched to use gpiolib irqchip helpers.
- Refactor the DWAPB driver to support being instantiated from and
MFD cell (platform device).
- Incremental feature improvement in the Zynq, MCP23S08, DWAPB, OMAP,
Xilinx and Crystalcove drivers.
- Various minor fixes"
* tag 'gpio-v3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (52 commits)
gpio: pch: Build context save/restore only for PM
pinctrl: abx500: get rid of unused variable
gpio: ks8695: fix 'else should follow close brace '}''
gpio: stmpe: add verbose debug code
gpio: stmpe: fix up interrupt enable logic
gpio: staticize xway_stp_init()
gpio: handle also nested irqchips in the chained handler set-up
gpio: set parent irq on chained handlers
gpiolib: irqchip: use irq_find_mapping while removing irqchip
gpio: crystalcove: support virtual GPIO
pinctrl: bcm281xx: make Kconfig dependency more strict
gpio: kona: enable only on BCM_MOBILE or for compile testing
gpio, bcm-kona, LLVMLinux: Remove use of __initconst
gpio: Fix ngpio in gpio-xilinx driver
gpio: dwapb: fix pointer to integer cast
gpio: xgene: Remove unneeded #ifdef CONFIG_OF guard
gpio: xgene: Remove unneeded forward declation for struct xgene_gpio
gpio: xgene: Fix missing spin_lock_init()
gpio: ks8695: fix switch case indentation
gpiolib: add irq_not_threaded flag to gpio_chip
...
development series:
- New drivers for the Freescale i.MX21, Qualcomm APQ8084
pin controllers.
- Incremental new features on the Rockchip, atlas 6,
OMAP, AM437x, APQ8064, prima2, AT91, Tegra, i.MX, Berlin
and Nomadik.
- Push Freescale drivers down into their own subdirectory.
- Assorted sprays of syntax and semantic fixes.
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Merge tag 'pinctrl-v3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control changes from Linus Walleij:
"This is the bulk of pin control changes for the v3.18 development
series:
- New drivers for the Freescale i.MX21, Qualcomm APQ8084 pin
controllers.
- Incremental new features on the Rockchip, atlas 6, OMAP, AM437x,
APQ8064, prima2, AT91, Tegra, i.MX, Berlin and Nomadik.
- Push Freescale drivers down into their own subdirectory.
- Assorted sprays of syntax and semantic fixes"
* tag 'pinctrl-v3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (48 commits)
pinctrl: specify bindings for pins and groups
pinctrl: nomadik: improve GPIO debug prints
pinctrl: abx500: refactor DT parser to take two paths
pinctrl: abx500: use helpers for map allocation/free
pinctrl: alter device tree bindings for functions
pinctrl: nomadik: refactor DT parser to take two paths
pinctrl: nomadik: use utils map free function
pinctrl: nomadik: use util function to reserve maps
pinctrl: qcom: use restart_notifier mechanism for ps_hold
pinctrl: sh-pfc: sh73a0: Remove unnecessary SoC data allocation
pinctrl: berlin: fix the dt_free_map function
pinctrl: at91: disable PD or PU before enabling PU or PD
pinctrl: st: remove gpiochip in failure cases
pinctrl: at91: Fix error handling while doing gpiochio_irqchip_add
pinctrl: at91: Fix failure path in at91_gpio_probe path
pinctrl: lantiq: Release gpiochip resources in fail case
pinctrl: imx: detect uninitialized pins
pinctrl: tegra: Add MIPI pad control
pinctrl: at91: Switch to using managed clk_get
pinctrl: adi2: Remove duplicate gpiochip_remove_pin_ranges
...
commit 2fcea6cecbc965b4e02a39537d9d939f5251bbbd
"pinctrl: remove remaining users of gpiochip_remove() retval"
removed the use of the return value from gpiochip_remove()
but missed to delete the dangling "err" variable:
drivers/pinctrl/nomadik/pinctrl-abx500.c:
In function 'abx500_gpio_probe':
drivers/pinctrl/nomadik/pinctrl-abx500.c:1208:11:
warning: unused variable 'err' [-Wunused-variable]
Fix this by getting rid of the dangling variable.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The debugfs file would only define if the line was "pulled" and
not which direction (pull up or pull down). Improve this by
taking two print paths depending on whether the pin is set as
input or output and use the data register directly to figure
out whether the pin is set for pull up or pull down.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We refactor the DT parser to look for either a config or a
function and then look for further nodes and reserve maps,
not the two things mixed up like prior to this patch.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This switches the abx500 driver to use the pin control helper
utils for allocating and free:ing maps.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
We refactor the DT parser to look for either a config or a
function and then look for further nodes and reserve maps,
not the two things mixed up like prior to this patch.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
By converting to the restart_notifier mechanism for restart, we allow
for other mechanisms, like the watchdog, to be used for restart in the
case where PS_HOLD has failed to reset the chip.
Since this mechanism may be one of several mechanisms registered, change
the post-ps_hold write timeout to be a more reasonable 1 second instead
of 10 seconds.
Choose priority 128, as according to documentation, this mechanism "is
sufficient to restart the entire system".
Tested-by: Pramod Gurav <pramod.gurav@smartplayin.com>
Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This driver is only useful on BCM281xx, so let the driver depend on
ARCH_BCM_MOBILE 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>
Reviewed-by: Sherman Yin <syin@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Some drivers accidentally still use the return value from
gpiochip_remove(). Get rid of them so we can simplify this function
and get rid of the return value.
Cc: Abdoulaye Berthe <berthe.ab@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The SoC data structure allocated at init time only holds a regulator
pointer that is only used in the init function. Replace it with a local
variable and get rid of the SoC data structure allocation altogether.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The berlin_pinctrl_dt_free_map function tries to free memory
allocated and handled by the of subsystem. This is wrong and
already handled by pinctrl_dt_free_maps() which calls
of_node_put().
This patch fixes the Berlin pinctrl way of freeing its maps,
avoiding a kernel BUG(), by using the common
pinctrl_utils_dt_free_map function instead.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Disable Pull-Down or Pull-Up property before enabling Pull-Up or
Pull-Down, because the pin's Pull-Up and Pull-Down property is
mutually exclusive.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch removes a call to panic function when gpiochio_irqchip_add
fails and just returns the error to the calling function.
Same return value is used to handle the error case and adds a lable
to release resources on error.
The error message has been improved to indicate failure to add irqchip
to gpiochip.
This also changes first argument to function at91_gpio_of_irq_setup from
struct device_node to struct platform_device. Because The device_node
argument was anyway not being used. Passed pdev so that on failure dev_err
can use &pdev->dev and log can be associated with proper device.
CC: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
CC: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This fixes the whole error handling in probe function by capturing and
returning error values on kernel function like clk_prepare,
clk_enable, gpiochip_add etc.
CC: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
CC: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The pinctrl driver initialized the register offsets for the pins
with 0. On Vybrid an offset of 0 is a valid offset for the pinctrl
mux register. So far, this was solved using the ZERO_OFFSET_VALID
flag which allowed offsets of 0. However, this does not allow to
verify whether a pins struct imx_pmx_func was initialized or not.
Use signed offset values for register offsets and initialize those
with -1 in order to detect uninitialized offset values reliable.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch adds MIPI CSI/DSIB pad control mux register
from the APB misc block to tegra pinctrl.
Without writing to this register, the dsib pads are
muxed as csi, and cannot be used.
The register is not yet documented in the TRM, here is
the description:
70000820: APB_MISC_GP_MIPI_PAD_CTRL_0
[31:02] RESERVED
[01:01] DSIB_MODE [CSI=0,DSIB=1]
[00:00] RESERVED
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
