29 Aug, 2018
1 commit
-
In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.Cc: Linus Walleij
Cc: Dong Aisheng
Cc: Fabio Estevam
Cc: Shawn Guo
Cc: Stefan Agner
Cc: Pengutronix Kernel Team
Cc: Sean Wang
Cc: Matthias Brugger
Cc: Carlo Caione
Cc: Kevin Hilman
Cc: Jason Cooper
Cc: Andrew Lunn
Cc: Gregory Clement
Cc: Sebastian Hesselbarth
Cc: Jean-Christophe Plagniol-Villard
Cc: Nicolas Ferre
Cc: Alexandre Belloni
Cc: Heiko Stuebner
Cc: Tony Lindgren
Cc: Haojian Zhuang
Cc: Patrice Chotard
Cc: Barry Song
Cc: Maxime Coquelin
Cc: Alexandre Torgue
Cc: Maxime Ripard
Cc: Chen-Yu Tsai
Cc: linux-gpio@vger.kernel.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-omap@vger.kernel.org
Acked-by: Dong Aisheng
Reviewed-by: Alexandre Belloni
Acked-by: Tony Lindgren
Acked-by: Sean Wang
Acked-by: Chen-Yu Tsai
Acked-by: Heiko Stuebner
Signed-off-by: Rob Herring
Signed-off-by: Linus Walleij
15 Aug, 2018
1 commit
-
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for v4.19:Core changes:
- Augment pinctrl_generic_add_group() and pinmux_generic_add_function()
to return the selector for the added group/function to the caller
and augment (hopefully) all drivers to handle thisNew subdrivers:
- Qualcomm PM8998 and PM8005 are supported in the SPMI pin control
and GPIO driver- Intel Ice Lake PCH (platform controller hub) support
- NXP (ex Freescale) i.MX8MQ support
- Berlin AS370 support
Improvements to drivers:
- Support interrupts on the Ocelot pin controller
- Add SPI pins to the Uniphier driver
- Define a GPIO compatible per SoC in the Tegra driver
- Push Tegra initialization down in the initlevels
- Support external wakeup interrupts on the Exynos
- Add generic clocks pins to the meson driver
- Add USB and HSCIF pins for some Renesas PFC chips
- Suspend/resume support in the armada-37xx
- Interrupt support for the Actions Semiconductor S900 also known as
"owl"- Correct the pin ordering in Cedarfork
- Debugfs output for INTF in the mcp23s08 driver
- Avoid divisions in context save/restore in pinctrl-single
The rest is minor bug fixes or cleanups"
* tag 'pinctrl-v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (69 commits)
pinctrl: nomadik: silence uninitialized variable warning
pinctrl: axp209: Fix NULL pointer dereference after allocation
pinctrl: samsung: Remove duplicated "wakeup" in printk
pinctrl: ocelot: add support for interrupt controller
pinctrl: intel: Don't shadow error code of gpiochip_lock_as_irq()
pinctrl: berlin: fix 'pctrl->functions' allocation in berlin_pinctrl_build_state
gpio: tegra: Move driver registration to subsys_init level
pinctrl: tegra: Move drivers registration to arch_init level
pinctrl: baytrail: actually print the apparently misconfigured pin
MAINTAINERS: Replace Heikki as maintainer of Intel pinctrl
pinctrl: freescale: off by one in imx1_pinconf_group_dbg_show()
pinctrl: uniphier: add spi pin-mux settings
pinctrl: cannonlake: Fix community ordering for H variant
pinctrl: tegra: define GPIO compatible node per SoC
pinctrl: intel: Do pin translation when lock IRQ
pinctrl: imx: off by one in imx_pinconf_group_dbg_show()
pinctrl: mediatek: include chained_irq.h header
pinctrl/amd: only handle irq if it is pending and unmasked
pinctrl/amd: fix gpio irq level in debugfs
pinctrl: stm32: add syscfg mask parameter
...
17 Jul, 2018
2 commits
-
Add the missing unlock before return from function
in the error handling case.Fixes: 0f5972033509 ("pinctrl: single: Fix group and function selector use")
Signed-off-by: Wei Yongjun
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij -
We must use a mutex around the generic_add functions and save the
function and group selector in case we need to remove them. Otherwise
the selector use will be racy for deferred probe at least.Note that struct device_node *np is unused in pcs_add_function() we
remove that too and fix a checkpatch warning for bare unsigned while
at it.Fixes: 571aec4df5b7 ("pinctrl: single: Use generic pinmux helpers for
managing functions")
Reported-by: H. Nikolaus Schaller
Cc: Christ van Willegen
Cc: Haojian Zhuang
Cc: Jacopo Mondi
Cc: Paul Cercueil
Cc: Sean Wang
Signed-off-by: Tony Lindgren
Tested-By: H. Nikolaus Schaller
Reviewed-by: Andy Shevchenko
Signed-off-by: Linus Walleij
18 Jun, 2018
2 commits
-
The divisions (and multiplications) can be avoided by changing the loops
to use increments of mux_bytes instead of 1.
While at it, remove the unneeded casts when assigning void pointers.This saves +100 bytes of kernel size on arm32/arm64.
Signed-off-by: Geert Uytterhoeven
Acked-by: Tony Lindgren
Tested-by: Keerthy
Reviewed-by: Keerthy
Signed-off-by: Linus Walleij -
Currently saved_vals is being allocated and there is no check for
failed allocation (which is more likely than normal when using
GFP_ATOMIC). Fix this by checking for a failed allocation and
propagating this error return down the the caller chain.Detected by CoverityScan, CID#1469841 ("Dereference null return value")
Fixes: 88a1dbdec682 ("pinctrl: pinctrl-single: Add functions to save and restore pinctrl context")
Signed-off-by: Colin Ian King
Reviewed-by: Johan Hovold
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij
13 Jun, 2018
1 commit
-
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:devm_kzalloc(handle, a * b, gfp)
with:
devm_kcalloc(handle, a * b, gfp)as well as handling cases of:
devm_kzalloc(handle, a * b * c, gfp)
with:
devm_kzalloc(handle, array3_size(a, b, c), gfp)
as it's slightly less ugly than:
devm_kcalloc(handle, array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
devm_kzalloc(handle, 4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@(
devm_kzalloc(HANDLE,
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
devm_kzalloc(HANDLE,
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@(
devm_kzalloc(HANDLE,
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(char) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@(
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- SIZE * COUNT
+ COUNT, SIZE
, ...)// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@(
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@(
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@(
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@(
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE,
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@(
devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * E2
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * (E2)
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- E1 * E2
+ E1, E2
, ...)
)Signed-off-by: Kees Cook
23 May, 2018
1 commit
-
This adds a pair of context save/restore functions to save/restore the
state of a set of pinctrl registers. The context is lost during rtc only
suspend with ddr in self-refresh on am43xx. Currently the save/restore
is being done unconditionally. This will be optimized later with a
pdata-quirk function which will allow is to save/restore only when doing
the rtc only mode with ddr in self refresh.Signed-off-by: Keerthy
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij
26 Mar, 2018
1 commit
-
This fixes pcs_request_gpio() in the pinctrl-single driver when
bits_per_mux != 0. It appears this was overlooked when the multiple
pins per register feature was added.Fixes: 4e7e8017a80e ("pinctrl: pinctrl-single: enhance to configure multiple pins of different modules")
Signed-off-by: David Lechner
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij
03 Feb, 2018
1 commit
-
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v4.16 kernel cycle.
Like with GPIO it is actually a bit calm this time.Core changes:
- After lengthy discussions and partly due to my ignorance, we have
merged a patch making pinctrl_force_default() and
pinctrl_force_sleep() reprogram the states into the hardware of any
hogged pins, even if they are already in the desired state.This only apply to hogged pins since groups of pins owned by
drivers need to be managed by each driver, lest they could not do
things like runtime PM and put pins to sleeping state even if the
system as a whole is not in sleep.New drivers:
- New driver for the Microsemi Ocelot SoC. This is used in ethernet
switches.- The X-Powers AXP209 GPIO driver was extended to also deal with pin
control and moved over from the GPIO subsystem. This circuit is a
mixed-mode integrated circuit which is part of AllWinner designs.- New subdriver for the Qualcomm MSM8998 SoC, core of a high end
mobile devices (phones) chipset.- New subdriver for the ST Microelectronics STM32MP157 MPU and
STM32F769 MCU from the STM32 family.- New subdriver for the MediaTek MT7622 SoC. This is used for
routers, repeater, gateways and such network infrastructure.- New subdriver for the NXP (former Freescale) i.MX 6ULL. This SoC
has multimedia features and target "smart devices", I guess in-car
entertainment, in-flight entertainment, industrial control panels
etc.General improvements:
- Incremental improvements on the SH-PFC subdrivers for things like
the CAN bus.- Enable the glitch filter on Baytrail GPIOs used for interrupts.
- Proper handling of pins to GPIO ranges on the Semtec SX150X
- An IRQ setup ordering fix on MCP23S08.
- A good set of janitorial coding style fixes"
* tag 'pinctrl-v4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (102 commits)
pinctrl: mcp23s08: fix irq setup order
pinctrl: Forward declare struct device
pinctrl: sunxi: Use of_clk_get_parent_count() instead of open coding
pinctrl: stm32: add STM32F769 MCU support
pinctrl: sx150x: Add a static gpio/pinctrl pin range mapping
pinctrl: sx150x: Register pinctrl before adding the gpiochip
pinctrl: sx150x: Unregister the pinctrl on release
pinctrl: ingenic: Remove redundant dev_err call in ingenic_pinctrl_probe()
pinctrl: sprd: Use seq_putc() in sprd_pinconf_group_dbg_show()
pinctrl: pinmux: Use seq_putc() in pinmux_pins_show()
pinctrl: abx500: Use seq_putc() in abx500_gpio_dbg_show()
pinctrl: mediatek: mt7622: align error handling of mtk_hw_get_value call
pinctrl: mediatek: mt7622: fix potential uninitialized value being returned
pinctrl: uniphier: refactor drive strength get/set functions
pinctrl: imx7ulp: constify struct imx_cfg_params_decode
pinctrl: imx: constify struct imx_pinctrl_soc_info
pinctrl: imx7d: simplify imx7d_pinctrl_probe
pinctrl: imx: use struct imx_pinctrl_soc_info as a const
pinctrl: sunxi-pinctrl: fix pin funtion can not be match correctly.
pinctrl: qcom: Add msm8998 pinctrl driver
...
03 Jan, 2018
2 commits
-
The script "checkpatch.pl" pointed information out like the following.
WARNING: void function return statements are not generally useful
Thus remove such a statement in the affected function.
Signed-off-by: Markus Elfring
Signed-off-by: Linus Walleij -
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring
Signed-off-by: Linus Walleij
28 Dec, 2017
1 commit
-
The IRQ code already has support for lockdep class for the lock mutex
in an interrupt descriptor. Extend this to add a second class for the
request mutex in the descriptor. Not having a class is resulting in
false positive splats in some code paths.Signed-off-by: Andrew Lunn
Signed-off-by: Thomas Gleixner
Acked-by: linus.walleij@linaro.org
Cc: grygorii.strashko@ti.com
Cc: f.fainelli@gmail.com
Link: https://lkml.kernel.org/r/1512234664-21555-1-git-send-email-andrew@lunn.ch
20 Dec, 2017
1 commit
-
Pinctrl single should just show how many pins were found, the physical
address is already in the dev information. So let's remove the wrong
information that claims to show the physical address but really prints
a virtual address that is now hashed.Signed-off-by: Tony Lindgren
Signed-off-by: Linus Walleij
21 Sep, 2017
1 commit
-
Don't populate the read-only arrays prop2 and prop4 on the stack, instead
make them static const. Makes the object code smaller by over 230 bytes:Before:
text data bss dec hex filename
28235 5820 192 34247 85c7 drivers/pinctrl/pinctrl-single.oAfter:
text data bss dec hex filename
27839 5980 192 34011 84db drivers/pinctrl/pinctrl-single.oSigned-off-by: Colin Ian King
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij
29 May, 2017
1 commit
-
Use of_device_get_match_data() instead of of_match_device().
It allows us to remove the forward declaration of pcs_of_match.Signed-off-by: Masahiro Yamada
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij
07 Apr, 2017
1 commit
-
Recent pinctrl changes to allow dynamic allocation of pins exposed one
more issue with the pinctrl pins claimed early by the controller itself.
This caused a regression for IMX6 pinctrl hogs.Before enabling the pin controller driver we need to wait until it has
been properly initialized, then claim the hogs, and only then enable it.To fix the regression, split the code into pinctrl_claim_hogs() and
pinctrl_enable(). And then let's require that pinctrl_enable() is always
called by the pin controller driver when ready after calling
pinctrl_register_and_init().Depends-on: 950b0d91dc10 ("pinctrl: core: Fix regression caused by delayed
work for hogs")
Fixes: df61b366af26 ("pinctrl: core: Use delayed work for hogs")
Fixes: e566fc11ea76 ("pinctrl: imx: use generic pinctrl helpers for
managing groups")
Cc: Haojian Zhuang
Cc: Masahiro Yamada
Cc: Mika Penttilä
Cc: Mika Westerberg
Cc: Nishanth Menon
Cc: Shawn Guo
Cc: Stefan Agner
Tested-by: Geert Uytterhoeven
Tested-by: Gary Bisson
Tested-by: Fabio Estevam
Signed-off-by: Tony Lindgren
Signed-off-by: Linus Walleij
26 Jan, 2017
2 commits
-
The current pinconf packed format allows only 16-bit argument limiting
the maximum value 65535. For most types this is enough. However,
debounce time can be in range of hundreths of milliseconds in case of
mechanical switches so we cannot represent the worst case using the
current format.In order to support larger values change the packed format so that the
lower 8 bits are used as type which leaves 24 bits for the argument.
This allows representing values up to 16777215 and debounce times up to
16 seconds.We also convert the existing users to use 32-bit integer when extracting
argument from the packed configuration value.Signed-off-by: Mika Westerberg
Reviewed-by: Andy Shevchenko
Signed-off-by: Linus Walleij
13 Jan, 2017
1 commit
-
Commit df61b366af26 ("pinctrl: core: Use delayed work for hogs") caused a
regression at least with sh-pfc that is also a GPIO controller as
noted by Geert Uytterhoeven .As the original pinctrl_register() has issues calling pin controller
driver functions early before the controller has finished registering,
we can't just revert commit df61b366af26. That would break the drivers
using GENERIC_PINCTRL_GROUPS or GENERIC_PINMUX_FUNCTIONS.So let's fix the issue with the following steps as a single patch:
1. Revert the late_init parts of commit df61b366af26.
The late_init clearly won't work and we have to just give up
on fixing pinctrl_register() for GENERIC_PINCTRL_GROUPS and
GENERIC_PINMUX_FUNCTIONS.2. Split pinctrl_register() into two parts
By splitting pinctrl_register() into pinctrl_init_controller()
and pinctrl_create_and_start() we have better control over when
it's safe to call pinctrl_create().3. Introduce a new pinctrl_register_and_init() function
As suggested by Linus Walleij , we
can just introduce a new function for the controllers that need
pinctrl_create() called later.4. Convert the four known problem cases to use new function
Let's convert pinctrl-imx, pinctrl-single, sh-pfc and ti-iodelay
to use the new function to fix the issues. The rest of the drivers
can be converted later. Let's also update Documentation/pinctrl.txt
accordingly because of the known issues with pinctrl_register().Fixes: df61b366af26 ("pinctrl: core: Use delayed work for hogs")
Reported-by: Geert Uytterhoeven
Cc: Gary Bisson
Signed-off-by: Tony Lindgren
Tested-by: Geert Uytterhoeven
Signed-off-by: Linus Walleij
03 Jan, 2017
2 commits
-
We can now drop the driver specific code for managing functions.
Signed-off-by: Tony Lindgren
[Replaces GENERIC_PINMUX with GENERIC_PINMUX_FUNCTIONS]
Signed-off-by: Linus Walleij -
We can now drop the driver specific code for managing groups.
Signed-off-by: Tony Lindgren
Signed-off-by: Linus Walleij
30 Dec, 2016
1 commit
-
Trivial fixe to spelling mistake "Ivalid" to "Invalid" in
dev_err error message.Signed-off-by: Colin Ian King
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij
17 Nov, 2016
1 commit
-
We should return -ENOMEM instead of success if pcs_add_function() fails.
Signed-off-by: Dan Carpenter
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij
12 Nov, 2016
2 commits
-
The pcs_parse_bits_in_pinctrl_entry function should search
for the "pinctrl-single,bits" and not "pinctrl-single,pins"Signed-off-by: Axel Haslam
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij -
pinctrl_count_index_with_args returns -ENOENT not
-EINVAL. The return check would pass, and we would
try to kzalloc with a negative error size throwing
a warning.Instead of checking for -EINVAL specifically, lets
check for any error and avoid negative size allocations.Signed-off-by: Axel Haslam
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij
05 Nov, 2016
2 commits
-
We can now use generic parser and keep things compatible with the
old binding.Signed-off-by: Tony Lindgren
Signed-off-by: Linus Walleij -
We can now use generic parser. To support the legacy binding without
#pinctrl-cells, add pcs_quirk_missing_pinctrl_cells() and warn about
missing #pinctrl-cells.Let's also update the documentation for struct pcs_soc_data while at it
as that seems to be out of date.Signed-off-by: Tony Lindgren
Signed-off-by: Linus Walleij
28 Oct, 2016
2 commits
-
This is left over from initial experiments with more properties.
It's only used in one place, so let's just get rid of it to make
the code more readable.Signed-off-by: Tony Lindgren
Signed-off-by: Linus Walleij -
>From tony Mon Sep 17 00:00:00 2001
From: Tony Lindgren
Date: Tue, 25 Oct 2016 08:33:34 -0700
Subject: [PATCHv2] pinctrl: single: Drop custom namesWe no longer need to allocate custom names as those are dynamically
generated in pinctrl_register_one_pin() if no name is passed to
pinctrl_register_pins().Signed-off-by: Tony Lindgren
Signed-off-by: Linus Walleij
22 Jun, 2016
1 commit
-
With many repeated suspend resume cycles, the pin specific wakeirq
may not always work on omaps. This is because the write to enable the
pin interrupt may not have reached the device over the interconnect
before suspend happens.Let's fix the issue with a flush of posted write with a readback.
Cc: stable@vger.kernel.org
Reported-by: Nishanth Menon
Signed-off-by: Tony Lindgren
Signed-off-by: Linus Walleij
15 Apr, 2016
1 commit
-
pcs_parse_bits_in_pinctrl_entry uses ffs which gives bit indices
ranging from 1 to MAX. This leads to a corner case where we try to request
the pin number = MAX and fails.bit_pos value is being calculted using ffs. pin_num_from_lsb uses
bit_pos value. pins array is populated with:pin + pin_num_from_lsb.
The above is 1 more than usual bit indices as bit_pos uses ffs to compute
first set bit. Hence the last of the pins array is populated with the MAX
value and not MAX - 1 which causes error when we call pin_request.mask_pos is rightly calculated as ((pcs->fmask) << (bit_pos - 1))
Consequently val_pos and submask are correct.Hence use __ffs which gives (ffs(x) - 1) as the first bit set.
fixes: 4e7e8017a8 ("pinctrl: pinctrl-single: enhance to configure multiple pins of different modules")
Signed-off-by: Keerthy
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij
12 Mar, 2016
1 commit
-
The single pinmux controller can be cascaded to the other interrupt
controllers. Hence when propagating wake-up settings to its parent
interrupt controller, there's possiblity of detecting possible recursive
locking and getting lockdep warning.This patch avoids this false positive by using a separate lockdep class
for this single pinctrl interrupts.Cc: linux-gpio@vger.kernel.org
Suggested-by: Thomas Gleixner
Signed-off-by: Sudeep Holla
Reviewed-by: Grygorii Strashko
Signed-off-by: Linus Walleij
17 Nov, 2015
1 commit
-
The pinctrl_unregister() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring
Signed-off-by: Linus Walleij
16 Sep, 2015
1 commit
-
Most interrupt flow handlers do not use the irq argument. Those few
which use it can retrieve the irq number from the irq descriptor.Remove the argument.
Search and replace was done with coccinelle and some extra helper
scripts around it. Thanks to Julia for her help!Signed-off-by: Thomas Gleixner
Cc: Julia Lawall
Cc: Jiang Liu
05 Sep, 2015
1 commit
-
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v4.3 development
cycle.Like with GPIO it's a lot of stuff. If my subsystems are any sign of
the overall tempo of the kernel v4.3 will be a gigantic diff.[ It looks like 4.3 is calmer than 4.2 in most other subsystems, but
we'll see - Linus ]Core changes:
- It is possible configure groups in debugfs.
- Consolidation of chained IRQ handler install/remove replacing all
call sites where irq_set_handler_data() and
irq_set_chained_handler() were done in succession with a combined
call to irq_set_chained_handler_and_data(). This series was
created by Thomas Gleixner after the problem was observed by
Russell King.- Tglx also made another series of patches switching
__irq_set_handler_locked() for irq_set_handler_locked() which is
way cleaner.- Tglx also wrote a good bunch of patches to make use of
irq_desc_get_xxx() accessors and avoid looking up irq_descs from
IRQ numbers. The goal is to get rid of the irq number from the
handlers in the IRQ flow which is nice.Driver feature enhancements:
- Power management support for the SiRF SoC Atlas 7.
- Power down support for the Qualcomm driver.
- Intel Cherryview and Baytrail: switch drivers to use raw spinlocks
in IRQ handlers to play nice with the realtime patch set.- Rework and new modes handling for Qualcomm SPMI-MPP.
- Pinconf power source config for SH PFC.
New drivers and subdrivers:
- A new driver for Conexant Digicolor CX92755.
- A new driver for UniPhier PH1-LD4, PH1-Pro4, PH1-sLD8, PH1-Pro5,
ProXtream2 and PH1-LD6b SoC pin control support.- Reverse-egineered the S/PDIF settings for the Allwinner sun4i
driver.- Support for Qualcomm Technologies QDF2xxx ARM64 SoCs
- A new Freescale i.mx6ul subdriver.
Cleanup:
- Remove platform data support in a number of SH PFC subdrivers"
* tag 'pinctrl-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (95 commits)
pinctrl: at91: fix null pointer dereference
pinctrl: mediatek: Implement wake handler and suspend resume
pinctrl: mediatek: Fix multiple registration issue.
pinctrl: sh-pfc: r8a7794: add USB pin groups
pinctrl: at91: Use generic irq_{request,release}_resources()
pinctrl: cherryview: Use raw_spinlock for locking
pinctrl: baytrail: Use raw_spinlock for locking
pinctrl: imx6ul: Remove .owner field
pinctrl: zynq: Fix typos in smc0_nand_grp and smc0_nor_grp
pinctrl: sh-pfc: Implement pinconf power-source param for voltage switching
clk: rockchip: add pclk_pd_pmu to the list of rk3288 critical clocks
pinctrl: sun4i: add spdif to pin description.
pinctrl: atlas7: clear ugly branch statements for pull and drivestrength
pinctrl: baytrail: Serialize all register access
pinctrl: baytrail: Drop FSF mailing address
pinctrl: rockchip: only enable gpio clock when it setting
pinctrl/mediatek: fix spelling mistake in dev_err error message
pinctrl: cherryview: Serialize all register access
pinctrl: UniPhier: PH1-Pro5: add I2C ch6 pin-mux setting
pinctrl: nomadik: reflect current input value
...
28 Jul, 2015
1 commit
-
set_irq_flags is ARM specific with custom flags which have genirq
equivalents. Convert drivers to use the genirq interfaces directly, so we
can kill off set_irq_flags. The translation of flags is as follows:IRQF_VALID -> !IRQ_NOREQUEST
IRQF_PROBE -> !IRQ_NOPROBE
IRQF_NOAUTOEN -> IRQ_NOAUTOENFor IRQs managed by an irqdomain, the irqdomain core code handles clearing
and setting IRQ_NOREQUEST already, so there is no need to do this in
.map() functions and we can simply remove the set_irq_flags calls. Some
users also modify IRQ_NOPROBE and this has been maintained although it
is not clear that is really needed. There appears to be a great deal of
blind copy and paste of this code.Signed-off-by: Rob Herring
Cc: Stephen Warren
Cc: Lee Jones
Cc: Matthias Brugger
Cc: Tomasz Figa
Cc: Thomas Abraham
Cc: Kukjin Kim
Cc: Krzysztof Kozlowski
Cc: linux-gpio@vger.kernel.org
Cc: linux-rpi-kernel@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Signed-off-by: Linus Walleij
20 Jul, 2015
1 commit
-
The PSC IRQ is requested using request_irq() API and as result it can
be forced to be threaded IRQ in RT-Kernel if PCS_QUIRK_HAS_SHARED_IRQ
is enabled for pinctrl domain.As result, following 'possible irq lock inversion dependency' report
can be seen:
=========================================================
[ INFO: possible irq lock inversion dependency detected ]
3.14.43-rt42-00360-g96ff499-dirty #24 Not tainted
---------------------------------------------------------
irq/369-pinctrl/927 just changed the state of lock:
(&pcs->lock){+.....}, at: [] pcs_irq_handle+0x48/0x9c
but this lock was taken by another, HARDIRQ-safe lock in the past:
(&irq_desc_lock_class){-.....}and interrupts could create inverse lock ordering between them.
other info that might help us debug this:
Possible interrupt unsafe locking scenario:CPU0 CPU1
---- ----
lock(&pcs->lock);
local_irq_disable();
lock(&irq_desc_lock_class);
lock(&pcs->lock);
lock(&irq_desc_lock_class);*** DEADLOCK ***
no locks held by irq/369-pinctrl/927.
the shortest dependencies between 2nd lock and 1st lock:
-> (&irq_desc_lock_class){-.....} ops: 58724 {
IN-HARDIRQ-W at:
[] lock_acquire+0x9c/0x158
[] _raw_spin_lock+0x48/0x58
[] handle_fasteoi_irq+0x24/0x15c
[] generic_handle_irq+0x3c/0x4c
[] handle_IRQ+0x50/0xa0
[] gic_handle_irq+0x3c/0x6c
[] __irq_svc+0x44/0x8c
[] arch_cpu_idle+0x40/0x4c
[] cpu_startup_entry+0x270/0x2e0
[] rest_init+0xd4/0xe4
[] start_kernel+0x3d0/0x3dc
[] 0x80008084
INITIAL USE at:
[] lock_acquire+0x9c/0x158
[] _raw_spin_lock_irqsave+0x54/0x68
[] __irq_get_desc_lock+0x64/0xa4
[] irq_set_chip+0x30/0x78
[] irq_set_chip_and_handler_name+0x24/0x3c
[] gic_irq_domain_map+0x48/0xb4
[] irq_domain_associate+0x84/0x1d4
[] irq_create_mapping+0x80/0x11c
[] irq_create_of_mapping+0x80/0x120
[] irq_of_parse_and_map+0x34/0x3c
[] omap_dm_timer_init_one+0x90/0x30c
[] omap5_realtime_timer_init+0x8c/0x48c
[] time_init+0x28/0x38
[] start_kernel+0x240/0x3dc
[] 0x80008084
}
... key at: [] irq_desc_lock_class+0x0/0x8
... acquired at:
[] _raw_spin_lock+0x48/0x58
[] pcs_irq_unmask+0x58/0xa0
[] irq_enable+0x38/0x48
[] irq_startup+0x78/0x7c
[] __setup_irq+0x4a8/0x4f4
[] request_threaded_irq+0xb8/0x138
[] omap_8250_startup+0x4c/0x148
[] serial8250_startup+0x24/0x30
[] uart_startup.part.9+0x5c/0x1b4
[] uart_open+0xf4/0x16c
[] tty_open+0x170/0x61c
[] chrdev_open+0xbc/0x1b4
[] do_dentry_open+0x1e8/0x2bc
[] finish_open+0x44/0x5c
[] do_last.isra.47+0x710/0xca0
[] path_openat+0xc4/0x640
[] do_filp_open+0x3c/0x98
[] do_sys_open+0x114/0x1d8
[] SyS_open+0x28/0x2c
[] kernel_init_freeable+0x168/0x1e4
[] kernel_init+0x1c/0xf8
[] ret_from_fork+0x14/0x20-> (&pcs->lock){+.....} ops: 65 {
HARDIRQ-ON-W at:
[] lock_acquire+0x9c/0x158
[] _raw_spin_lock+0x48/0x58
[] pcs_irq_handle+0x48/0x9c
[] pcs_irq_handler+0x1c/0x28
[] irq_forced_thread_fn+0x30/0x74
[] irq_thread+0x158/0x1c4
[] kthread+0xd4/0xe8
[] ret_from_fork+0x14/0x20
INITIAL USE at:
[] lock_acquire+0x9c/0x158
[] _raw_spin_lock_irqsave+0x54/0x68
[] pcs_enable+0x7c/0xe8
[] pinmux_enable_setting+0x178/0x220
[] pinctrl_select_state+0x110/0x194
[] pinctrl_bind_pins+0x7c/0x108
[] driver_probe_device+0x70/0x254
[] __driver_attach+0x9c/0xa0
[] bus_for_each_dev+0x78/0xac
[] driver_attach+0x2c/0x30
[] bus_add_driver+0x15c/0x204
[] driver_register+0x88/0x108
[] __platform_driver_register+0x64/0x6c
[] omap_hsmmc_driver_init+0x1c/0x20
[] do_one_initcall+0x110/0x170
[] kernel_init_freeable+0x140/0x1e4
[] kernel_init+0x1c/0xf8
[] ret_from_fork+0x14/0x20
}
... key at: [] __key.18572+0x0/0x8
... acquired at:
[] mark_lock+0x388/0x76c
[] __lock_acquire+0x6d0/0x1f98
[] lock_acquire+0x9c/0x158
[] _raw_spin_lock+0x48/0x58
[] pcs_irq_handle+0x48/0x9c
[] pcs_irq_handler+0x1c/0x28
[] irq_forced_thread_fn+0x30/0x74
[] irq_thread+0x158/0x1c4
[] kthread+0xd4/0xe8
[] ret_from_fork+0x14/0x20stack backtrace:
CPU: 1 PID: 927 Comm: irq/369-pinctrl Not tainted 3.14.43-rt42-00360-g96ff499-dirty #24
[] (unwind_backtrace) from [] (show_stack+0x20/0x24)
[] (show_stack) from [] (dump_stack+0x84/0xd0)
[] (dump_stack) from [] (print_irq_inversion_bug+0x1d0/0x21c)
[] (print_irq_inversion_bug) from [] (check_usage_backwards+0xb4/0x11c)
[] (check_usage_backwards) from [] (mark_lock+0x388/0x76c)
[] (mark_lock) from [] (__lock_acquire+0x6d0/0x1f98)
[] (__lock_acquire) from [] (lock_acquire+0x9c/0x158)
[] (lock_acquire) from [] (_raw_spin_lock+0x48/0x58)
[] (_raw_spin_lock) from [] (pcs_irq_handle+0x48/0x9c)
[] (pcs_irq_handle) from [] (pcs_irq_handler+0x1c/0x28)
[] (pcs_irq_handler) from [] (irq_forced_thread_fn+0x30/0x74)
[] (irq_forced_thread_fn) from [] (irq_thread+0x158/0x1c4)
[] (irq_thread) from [] (kthread+0xd4/0xe8)
[] (kthread) from [] (ret_from_fork+0x14/0x20)To fix it use IRQF_NO_THREAD to ensure that pcs irq will not be forced threaded.
Cc: Tony Lindgren
Cc: Sebastian Andrzej Siewior
Signed-off-by: Grygorii Strashko
Acked-by: Tony Lindgren
Signed-off-by: Linus Walleij
18 Jul, 2015
2 commits
-
Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we
already have a pointer to corresponding irq_desc.Signed-off-by: Jiang Liu
Cc: Linus Walleij
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Thomas Gleixner -
Chained irq handlers usually set up handler data as well. We now have
a function to set both under irq_desc->lock. Replace the two calls
with one.Search and conversion was done with coccinelle.
Reported-by: Russell King
Signed-off-by: Thomas Gleixner
Cc: Julia Lawall
Cc: Linus Walleij
Cc: linux-gpio@vger.kernel.org
