| Commit message (Collapse) | Author | Age |
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight changes from Lee Jones:
Changes to existing drivers:
- remove get brightness implementations in via-pmu-backlight
samsung-q10 aat2870_bl ams369fg06 bd6107 gpio_backlight ld9040
lp855x_bl lp8788_bl lv5207lp pandora_bl pwm_bl s6e63m0 tps65217_bl
aty128fb atyfb_base radeon_backlight s6e8ax0 nv_backlight
riva/fbdev
- improve error handling in jornada720_lcd
- make use of new 'get optional' GPIO command in pwm_bl
- fix sparse warning in ipaq_micro_bl
New drivers/supported devices:
- new driver for iPAQ"
* tag 'backlight-for-linus-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: ipaq_micro: Fix sparse non static symbol warning
backlight: Add driver for iPAQ micro backlight
backlight: pwm-backlight: Use devm_gpiod_get_optional()
backlight: jornada720: Minimise code duplication and handle errors better
backlight: Show brightness even if get_brightness is not implemented
backlight: Remove trivial get_brightness implementations
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Fixes the following sparse warnings:
drivers/video/backlight/ipaq_micro_bl.c:73:24: warning:
symbol 'micro_backlight_device_driver' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Bryan Wu <cooloney@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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This adds a driver for the backlight controlled by the microcontroller
on the Compaq iPAQ series of handheld computers: h3100, h3600
and h3700.
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Make use of the new devm_gpiod_get_optional() to simplify the probe
code.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Rickard Strandqvi's ran a code analysis application which found that
jornada_lcd_get_contrast(() and jornada_lcd_set_contrast() contained
some code duplication (calling the same functions during various
code execution paths) and failed to return errors in a consistent
manner. This patch aims to simplify the code, coercing it into
behaving at a level expected of a driver in the Linux kernel.
Suggested-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Many implementations of get_brightness operation returns only value
of props.brightness field. This change makes such implementations
unnecessary.
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Since backlight core returns props.brightness in case get_brightness
is not implemented trivial implementations are not needed anymore.
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pinctrl updates from Linus Walleij:
"This is the bulk pin control changes for the v3.17 merge development
cycle:
- get rid of the .disable() callback from the driver callback vtable.
This callback was abused and counterintuitive since a pin or group
of pins can be said to always be in some setting, and never really
disabled. We now only enable a certain muxing, and move between
some certain muxings, we never "disable" a mux setting
- some janitorial moving the MSM, Samsung and Nomadik and drivers to
their own subdirectories for a clearer view in the subsystem. This
will continue
- kill off the use of the return value from gpiochip_remove(), this
will be done in parallel in the GPIO subsystem and hopefully not
trigger too many unchecked return value warnings before we get rid
of this altogether
- a huge set of changes and improvements to the Allwinner sunxi
drivers especially for their latest A23 and A31 SoCs, and some
ground work for the new sun8i platform family
- a large set of Rockchip driver improvements adding support for the
RK3288 SoC
- advances in migration of older Freescale platforms to pin control,
especially i.MX1
- Samsung and Exynos improvements
- support for the Qualcomm MSM8960 SoC
- use the gpiolib irqchip helpers for the ST SPEAr and Intel Baytrail
drivers
- a bunch of nice janitorial work done with cppcheck"
* tag 'pinctrl-v3.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (61 commits)
pinctrl: baytrail: Convert to use gpiolib irqchip
pinctrl: sunxi: number gpio ranges starting from 0
pinctrl: sunxi: use gpiolib API to mark a GPIO used as an IRQ
pinctrl: rockchip: add drive-strength control for rk3288
pinctrl: rockchip: add separate type for rk3288
pinctrl: rockchip: set is_generic in pinconf_ops
pinctrl: msm: drop negativity check on unsigned value
pinctrl: remove all usage of gpio_remove ret val in driver/pinctl
pinctrl: qcom: Make muxing of gpio function explicit
pinctrl: nomadik: move all Nomadik drivers to subdir
pinctrl: samsung: Group all drivers in a sub-dir
sh-pfc: sh73a0: Introduce the use of devm_regulator_register
sh-pfc: Add renesas,pfc-r8a7791 to binding documentation
pinctrl: msm: move all qualcomm drivers to subdir
pinctrl: msm: Add msm8960 definitions
pinctrl: samsung: Allow pin value to be initialized using pinfunc
pinctrl: samsung: Allow grouping multiple pinmux/pinconf nodes
pinctrl: exynos: Consolidate irq_chips of GPIO and WKUP EINTs
pinctrl: samsung: Handle GPIO request and free using pinctrl helpers
pinctrl: samsung: Decouple direction setting from pinctrl
...
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Instead of open-coding irqchip handling in the driver we can take advantage
of the new irqchip helpers provided by the gpiolib core.
While doing this we also make sure that we call gpiochip_irqchip_add()
after the gpiochip itself is registered as required.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The pinctrl-sunxi driver originally used the pin number as the gpio
range offset. This resulted in large, bogus gpio numbers for the
new sun6i-a31-r pinctrl devices.
This patch makes the driver number the gpios ranges starting from an
offset of 0, by subtracting the pin_base number from the pin number.
This also makes the system-wide gpio number match the pin number.
Tested on sun8i with sysfs exported gpios.
This patch also changes the GPIO bindings for R_PIO:
gpios = <&r_pio B N flag>;
Where B originally was the pinbank label (L or M) counted from A,
with this patch it becomes (L or M) counted from its pinbank base (L).
Thus
gpios = <&r_pio 10 11 0>; /* PL11 */
becomes
gpios = <&r_pio 0 11 0>; /* PL11 */
IMO this is correct, as the binding shows the bank offset and pin offset
within the bank for the GPIO controller. But I'm worried it might be a
bit confusing.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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When an IRQ is started on a GPIO line, mark this GPIO as IRQ in
the gpiolib so we can keep track of the usage centrally.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The rk3288 is the first Rockchip soc handling the drive strength on a per-pin
basis, while the older ones can set the drive-strength only for specific
pin-groups. Therefore limit setting the drive-strength to this soc for now.
Signed-off-by: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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An upcoming pinctrl function of the rk3288 differs again from everything else,
so we'll need a separate type for it.
Signed-off-by: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The rockchip pinctrl driver implements the generic pinconfig, therefore
also state this, so that the default pinconf dump functions work.
Signed-off-by: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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[linux-3.16-rc5/drivers/pinctrl/pinctrl-msm.c:145]: (style) Checking if
unsigned variable 'mux_bit' is less than zero.
if (WARN_ON(g->mux_bit < 0))
return -EINVAL;
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=80491
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Andrey Utkin <andrey.krieger.utkin@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Signed-off-by: abdoulaye berthe <berthe.ab@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Instead of relying on pinmux->disable(), make the gpio function an
explicit function for all pins that supports it.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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We have a bunch of Nomadik family pin control drivers, so let's
move them into their own subdirectory.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Group all pin control drivers of Samsung platform together in
a sub-directory for easy maintenance.
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch moves data allocated using regulator_register to
devm_regulator_register and does away the calls to regulator_unregister.
The sh73a0_pinmux_soc_exit function is no longer needed and is removed.
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The driver already supports the r8a7791 SoC, and "renesas,pfc-r8a7791"
is already in use.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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We have four Qualcomm-related pin control drivers, and now there
are drivers coming in for the PMICs on these systems, so let's
create a qcom subdirectory to hold all the Qualcomm stuff.
Acked-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch extends the range of settings configurable via pinfunc API
to cover pin value as well. This allows configuration of default values
of pins, which is useful for pins that are not supposed to be used by
any dedicated driver, but need certain board-specific setting.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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One of remaining limitations of current pinctrl-samsung driver was
the inability to parse multiple pinmux/pinconf group nodes grouped
inside a single device tree node. It made defining groups of pins for
single purpose, but with different parameters very inconvenient.
This patch implements Tegra-like support for grouping multiple pinctrl
groups inside one device tree node, by completely changing the way
pin groups and functions are parsed from device tree. The code creating
pinctrl maps from DT nodes has been borrowed from pinctrl-tegra, while
the initial creation of groups and functions has been completely
rewritten with following assumptions:
- each group consists of just one pin and does not depend on data
from device tree,
- each function is represented by a device tree child node of the
pin controller, which in turn can contain multiple child nodes
for pins that need to have different configuration values.
Device Tree bindings are fully backwards compatible. New functionality
can be used by defining a new pinctrl group consisting of several child
nodes, as on following example:
sd4_bus8: sd4-bus-width8 {
part-1 {
samsung,pins = "gpk0-3", "gpk0-4",
"gpk0-5", "gpk0-6";
samsung,pin-function = <3>;
samsung,pin-pud = <3>;
samsung,pin-drv = <3>;
};
part-2 {
samsung,pins = "gpk1-3", "gpk1-4",
"gpk1-5", "gpk1-6";
samsung,pin-function = <4>;
samsung,pin-pud = <4>;
samsung,pin-drv = <3>;
};
};
Tested on Exynos4210-Trats board and a custom Exynos4212-based one.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Handling of irq_chip operations for GPIO and WKUP external interrupts
is mostly the same, with the difference being offset of registers.
However currently the driver has all the code duplicated for both EINT
types, which is undesirable, because changes in irq_chip operations have
to be done to both instances of the same code.
This patch fixes this by creating exynos_irq_chip struct that has normal
irq_chip struct embedded and contain differences between particular EINT
types, which are three register offsets. One instance of code is removed
and the new structure is used instead to fetch necessary data instead of
samsung_pin_ctrl struct used previously.
While at it, the patch removes Exynos-specific fields from
aforementioned structure to improve layering of the driver.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch adds .request() and .free() operations to gpio_chip of
pinctrl-samsung driver, which call pinctrl request and free helpers to
request and free pinctrl pin along with GPIO pin.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch makes the pinctrl-samsung driver configure GPIO direction on
its own, without using the pinctrl_gpio_direction_*() "helpers". The
rationale behind this change is as follows:
- pinctrl-samsung does not need translation from GPIO namespace to
pinctrl namespace to handle GPIO operations - GPIO chip and offset
therein are enough to calculate necessary offsets and bit masks in
constant time,
- the pinctrl_gpio_direction_*() functions do not do anything useful
other than translating the pin into pinctrl namespace and calling the
.gpio_set_direction() from pinmux_ops of the controller,
- the undesirable side effect of using those helpers is losing the
ability to change GPIO direction in atomic context, because they
explicitly use a mutex for synchronization,
Results of this patch are:
- fixed warnings about scheduling while atomic in code that needs to
set GPIO direction in atomic context (e.g. interrupt handler),
- reduced overhead of bitbanging drivers that use gpio_direction_*(),
e.g. i2c-gpio.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Add CAN0/1 data/clock pin groups to R8A7791 PFC driver.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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For Baytrail, you should never set a GPIO set to direct_irq
to output mode. When direct_irq_en is set for a GPIO, it is
tied directly to an APIC internally, and making the pad output
does not make any sense. Assert a WARN() in the event this happens.
Signed-off-by: Eric Ernst <eric.ernst@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Remove variable that are never used
This was found using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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%d in format string used, but the type is unsigned int
This was found using a static code analysis program called cppcheck
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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%d in format string used, but the type is unsigned int
This was found using a static code analysis program called cppcheck
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Remove variable that are never used
This was found using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Remove variable that are never used
This was found using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Remove checking if a unsigned is less than zero
This was found using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Remove checking if a unsigned is less than zero
This was found using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Remove checking if a unsigned is less than zero
This was found using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Remove checking if a unsigned is less than zero
This was found using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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no .irq_set_wake API is available for pinctrl-st driver.
Add the IRQCHIP_SKIP_SET_WAKE flag to inform irq handler
not to call this API.
Signed-off-by: David Paris <david.paris@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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bcm281xx_pinctrl_probe is local to this file. Make it static.
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch adds the BUS_HOLD (Keeper) bias option for pins.
Signed-off-by: Andy Gross <agross@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The A23 has a R_PIO pin controller, similar to the one found on the A31 SoC.
Add support for the pins controlled by the R_PIO controller.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The A23 uses the same pin controller as previous SoC's from Allwinner.
Add support for the pins controlled by the main PIO controller.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The PINCTRL_SUNXI configuration was kept only to deal with the introduction of
per-machine symbols and the various pintrl drivers through different tree.
Now that it's not useful anymore, we can just remove it.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The A13 user manual states pins PG0/1/2 only have GPIO input and
interrupt functions. Remove the gpio_out functions for these pins.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The pin-controller of the new RK3288 contains all the quirks just added in
the previous patches.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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On the upcoming RK3288 SoC contain some unrouted pins in their banks. So while
for example pin8 of bank5 stays pin8 with all its settings (register offset etc),
pins 0 to 7 are not routed outside the SoC at all.
Therefore add a flag to mark these unrouted iomuxes to prevent people from using
them.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The upcoming rk3288 moves some iomux settings to the pmu register space.
Therefore add a flag for this and adapt the mux functions accordingly.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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In the upcoming rk3288 SoC some iomux settings are 4bit wide instead of
the regular 2bit. Therefore add a flag to mark iomuxes as such and adapt
the mux-access as well as the offset calculation accordingly.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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