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The previous pinconf settings(made by the bootloader) need to be
overwritten when configuring the pinctrl of a driver during the boot
process.
Configuring the bias of a GPIO at runtime (e.g. pull-up) needs to
preserve the other settings unaltered.
This patch introduces changes to differentiate between the two cases.
Signed-off-by: Radu Pirea <[email protected]>
Signed-off-by: Florin Buica <[email protected]>
Signed-off-by: Andrei Stefanescu <[email protected]>
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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Previously, it was possible to only configure the open-drain for a pin.
However, after a pin got configured with open-drain, there wasn't any
way to disable it. Add the push-pull configuration in order to reverse
the open-drain configuration.
Signed-off-by: Florin Buica <[email protected]>
Signed-off-by: Andrei Stefanescu <[email protected]>
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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The IBE (input buffer enable) should be enabled for a GPIO. Reading the
value will return the one from the input register, writing the value
will return the one from the output register.
This offers the flexibility to check if the value intended to be set
matches the actual physical one.
Signed-off-by: Florin Buica <[email protected]>
Signed-off-by: Andrei Stefanescu <[email protected]>
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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The of_property_for_each_u32() macro needs five parameters, two of which
are primarily meant as internal variables for the macro itself (in the
for() clause). Yet these two parameters are used by a few drivers, and this
can be considered misuse or at least bad practice.
Now that the kernel uses C11 to build, these two parameters can be avoided
by declaring them internally, thus changing this pattern:
struct property *prop;
const __be32 *p;
u32 val;
of_property_for_each_u32(np, "xyz", prop, p, val) { ... }
to this:
u32 val;
of_property_for_each_u32(np, "xyz", val) { ... }
However two variables cannot be declared in the for clause even with C11,
so declare one struct that contain the two variables we actually need. As
the variables inside this struct are not meant to be used by users of this
macro, give the struct instance the noticeable name "_it" so it is visible
during code reviews, helping to avoid new code to use it directly.
Most usages are trivially converted as they do not use those two
parameters, as expected. The non-trivial cases are:
- drivers/clk/clk.c, of_clk_get_parent_name(): easily doable anyway
- drivers/clk/clk-si5351.c, si5351_dt_parse(): this is more complex as the
checks had to be replicated in a different way, making code more verbose
and somewhat uglier, but I refrained from a full rework to keep as much
of the original code untouched having no hardware to test my changes
All the changes have been build tested. The few for which I have the
hardware have been runtime-tested too.
Reviewed-by: Andre Przywara <[email protected]> # drivers/clk/sunxi/clk-simple-gates.c, drivers/clk/sunxi/clk-sun8i-bus-gates.c
Acked-by: Bartosz Golaszewski <[email protected]> # drivers/gpio/gpio-brcmstb.c
Acked-by: Nicolas Ferre <[email protected]> # drivers/irqchip/irq-atmel-aic-common.c
Acked-by: Jonathan Cameron <[email protected]> # drivers/iio/adc/ti_am335x_adc.c
Acked-by: Uwe Kleine-König <[email protected]> # drivers/pwm/pwm-samsung.c
Acked-by: Richard Leitner <[email protected]> # drivers/usb/misc/usb251xb.c
Acked-by: Mark Brown <[email protected]> # sound/soc/codecs/arizona.c
Reviewed-by: Richard Fitzgerald <[email protected]> # sound/soc/codecs/arizona.c
Acked-by: Michael Ellerman <[email protected]> # arch/powerpc/sysdev/xive/spapr.c
Acked-by: Stephen Boyd <[email protected]> # clk
Signed-off-by: Luca Ceresoli <[email protected]>
Acked-by: Lee Jones <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Rob Herring (Arm) <[email protected]>
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Use scope based of_node_put() cleanup to simplify code.
Signed-off-by: Peng Fan <[email protected]>
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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With "W=1" and "-Wformat-truncation" build options, the kernel test robot
found a possible string truncation warning in pinctrl-s32cc.c, which uses
an 8-byte char array to hold a memory region name "map%u". Since the
maximum number of digits that a u32 value can present is 10, and the "map"
string occupies 3 bytes with a termination '\0', which means the rest 4
bytes cannot fully present the integer "X" that exceeds 4 digits.
Here we check if the number >= 10000, which is the lowest value that
contains more than 4 digits.
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Chester Lin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.
Signed-off-by: Rob Herring <[email protected]>
Reviewed-by: Damien Le Moal <[email protected]>
Acked-by: Emil Renner Berthing <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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Ensure child node references are decremented properly in the error path.
Signed-off-by: Lu Hongfei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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The .data field in struct of_device_id is used as a const member so it's
inappropriate to attach struct s32_pinctrl_soc_info with of_device_id
because some members in s32_pinctrl_soc_info need to be filled by
pinctrl-s32cc at runtime.
For this reason, struct s32_pinctrl_soc_info must be allocated in
pinctrl-s32cc and then create a new struct s32_pinctrl_soc_data in order
to represent const .data in of_device_id. To combine these two structures,
a s32_pinctrl_soc_data pointer is introduced in s32_pinctrl_soc_info.
Besides, use of_device_get_match_data() instead of of_match_device() since
the driver only needs to retrieve the .data from of_device_id.
Link: https://lore.kernel.org/r/[email protected]/
Suggested-by: Andy Shevchenko <[email protected]>
Signed-off-by: Chester Lin <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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Replace struct s32_pmx_func with generic struct pinfunction since they
have the same data fields.
Suggested-by: Andy Shevchenko <[email protected]>
Signed-off-by: Chester Lin <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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Use generic data structure to describe pin control groups in S32 SoC family
and drop duplicated struct members.
Suggested-by: Andy Shevchenko <[email protected]>
Signed-off-by: Chester Lin <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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Move common codes into smaller inline functions and remove argument checks
that are not actually used by pull up/down bits in the S32 MSCR register.
Signed-off-by: Chester Lin <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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Improve error/return code handlings and config checks in order to have
better reliability and simplify driver codes such as removing/changing
improper macros, blanks, print formats and helper calls.
Signed-off-by: Chester Lin <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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The declaration of s32_pinctrl_suspend/s32_pinctrl_resume is hidden
in an #ifdef, causing a compilation failure when CONFIG_PM_SLEEP is
disabled:
drivers/pinctrl/nxp/pinctrl-s32g2.c:754:38: error: 's32_pinctrl_suspend' undeclared here (not in a function); did you mean 's32_pinctrl_probe'?
drivers/pinctrl/nxp/pinctrl-s32g2.c:754:9: note: in expansion of macro 'SET_LATE_SYSTEM_SLEEP_PM_OPS'
754 | SET_LATE_SYSTEM_SLEEP_PM_OPS(s32_pinctrl_suspend,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
Remove the bogus #ifdef and __maybe_unused annation on the global
functions, and instead use the proper LATE_SYSTEM_SLEEP_PM_OPS()
macro to pick set the function pointer.
As the function definition is still in the #ifdef block, this leads
to the correct code in all configurations.
Fixes: fd84aaa8173d ("pinctrl: add NXP S32 SoC family support")
Signed-off-by: Arnd Bergmann <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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Add the pinctrl driver for NXP S32 SoC family. This driver is mainly based
on NXP's downstream implementation on nxp-auto-linux repo[1].
[1] https://github.com/nxp-auto-linux/linux/tree/bsp35.0-5.15.73-rt/drivers/pinctrl/freescale
Signed-off-by: Matthew Nunez <[email protected]>
Signed-off-by: Phu Luu An <[email protected]>
Signed-off-by: Stefan-Gabriel Mirea <[email protected]>
Signed-off-by: Larisa Grigore <[email protected]>
Signed-off-by: Ghennadi Procopciuc <[email protected]>
Signed-off-by: Andrei Stefanescu <[email protected]>
Signed-off-by: Radu Pirea <[email protected]>
Signed-off-by: Chester Lin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>
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