06 Oct, 2019
1 commit
-
platform_get_irq() can return an error code. Allow for this when getting
the irq.Fixes: 6f265e5d4da7 ("pinctrl: bcm-iproc: Pass irqchip when adding gpiochip")
Signed-off-by: Chris Packham
Link: https://lore.kernel.org/r/20191003000310.17099-2-chris.packham@alliedtelesis.co.nz
Acked-by: Scott Branden
Signed-off-by: Linus Walleij
05 Oct, 2019
2 commits
-
The pinctrl->functions[] array has pinctrl->num_functions elements and
the pinctrl->groups[] array is the same way. These are set in
ns2_pinmux_probe(). So the > comparisons should be >= so that we don't
read one element beyond the end of the array.Fixes: b5aa1006e4a9 ("pinctrl: ns2: add pinmux driver support for Broadcom NS2 SoC")
Signed-off-by: Dan Carpenter
Link: https://lore.kernel.org/r/20190926081426.GB2332@mwanda
Acked-by: Scott Branden
Signed-off-by: Linus Walleij -
This convert the BCM IPROC driver to use the SPDX header
for indicating GPL v2.0 only licensing.Cc: Pramod Kumar
Cc: Ray Jui
Cc: Scott Branden
Signed-off-by: Linus Walleij
Acked-by: Scott Branden
Link: https://lore.kernel.org/r/20191002130217.4491-1-linus.walleij@linaro.org
12 Sep, 2019
2 commits
-
The pointer log is being initialized with a value that is never read
and is being re-assigned a little later on. The assignment is
redundant and hence can be removed.Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King
Link: https://lore.kernel.org/r/20190905140919.29283-1-colin.king@canonical.com
Reviewed-by: Ray Jui
Signed-off-by: Linus Walleij -
Add 'get_direction' support to the iProc GPIO driver.
Signed-off-by: Rayagonda Kokatanur
Link: https://lore.kernel.org/r/1568178685-30738-1-git-send-email-rayagonda.kokatanur@broadcom.com
Signed-off-by: Linus Walleij
11 Sep, 2019
2 commits
-
When multiple instance of iproc-gpio chips are present, a fix up
message[1] is printed during the probe of second and later instances.This issue is because driver sharing same irq_chip data structure
among multiple instances of driver.Fix this by allocating irq_chip data structure per instance of
iproc-gpio.[1] fix up message addressed by this patch
[ 7.862208] gpio gpiochip2: (689d0000.gpio): detected irqchip that
is shared with multiple gpiochips: please fix the driver.Fixes: 616043d58a89 ("pinctrl: Rename gpio driver from cygnus to iproc")
Signed-off-by: Rayagonda Kokatanur
Link: https://lore.kernel.org/r/1567054348-19685-3-git-send-email-srinath.mannam@broadcom.com
[Rebased on top of new irq chip set-up code]
Signed-off-by: Linus Walleij -
Fix drive strength for AON/CRMU controller; fix pull-up/down setting
for CCM/CDRU controller.Fixes: 616043d58a89 ("pinctrl: Rename gpio driver from cygnus to iproc")
Signed-off-by: Li Jin
Link: https://lore.kernel.org/r/1567054348-19685-2-git-send-email-srinath.mannam@broadcom.com
Signed-off-by: Linus Walleij
26 Aug, 2019
1 commit
-
We need to convert all old gpio irqchips to pass the irqchip
setup along when adding the gpio_chip. For more info see
drivers/gpio/TODO.For chained irqchips this is a pretty straight-forward
conversion. The BCM2835 has multiple parents so let's
exploit the new facility in the GPIO_IRQCHIP to actually
deal with multiple parents.Cc: Eric Anholt
Cc: Thierry Reding
[Rebased on changes in the pinctrl tree]
Signed-off-by: Linus Walleij
Tested-by: Stefan Wahren
Link: https://lore.kernel.org/r/20190812062729.1892-1-linus.walleij@linaro.org
21 Aug, 2019
1 commit
-
We need to convert all old gpio irqchips to pass the irqchip
setup along when adding the gpio_chip. For more info see
drivers/gpio/TODO.For chained irqchips this is a pretty straight-forward
conversion.Cc: Pramod Kumar
Cc: Ray Jui
Cc: Scott Branden
Cc: Thierry Reding
Signed-off-by: Linus Walleij
Link: https://lore.kernel.org/r/20190812132554.18313-1-linus.walleij@linaro.org
Acked-by: Scott Branden
Signed-off-by: Linus Walleij
05 Aug, 2019
1 commit
-
The BCM2711 has a new way of selecting the pull-up/pull-down setting
for a GPIO pin. The registers used for the BCM2835, GP_PUD and
GP_PUDCLKn0, are no longer connected. A new set of registers,
GP_GPIO_PUP_PDN_CNTRL_REGx must be used. This commit will add
a new compatible string "brcm,bcm2711-gpio" and the kernel
driver will use it to select which method is used to select
pull-up/pull-down.This patch based on a patch by Al Cooper which was intended for the
BCM7211. This is a bugfixed and improved version.Signed-off-by: Stefan Wahren
Link: https://lore.kernel.org/r/1563776607-8368-3-git-send-email-wahrenst@gmx.net
Signed-off-by: Linus Walleij
14 Jul, 2019
1 commit
-
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v5.3 kernel cycle:Core changes:
- Device links can optionally be added between a pin control producer
and its consumers. This will affect how the system power management
is handled: a pin controller will not suspend before all of its
consumers have been suspended.This was necessary for the ST Microelectronics STMFX expander and
need to be tested on other systems as well: it makes sense to make
this default in the long run.Right now it is opt-in per driver.
- Drive strength can be specified in microamps. With decreases in
silicon technology, milliamps isn't granular enough, let's make it
possible to select drive strengths in microamps.Right now the Meson (AMlogic) driver needs this.
New drivers:
- New subdriver for the Tegra 194 SoC.
- New subdriver for the Qualcomm SDM845.
- New subdriver for the Qualcomm SM8150.
- New subdriver for the Freescale i.MX8MN (Freescale is now a product
line of NXP).- New subdriver for Marvell MV98DX1135.
Driver improvements:
- The Bitmain BM1880 driver now supports pin config in addition to
muxing.- The Qualcomm drivers can now reserve some GPIOs as taken aside and
not usable for users. This is used in ACPI systems to take out some
GPIO lines used by the BIOS so that noone else (neither kernel nor
userspace) will play with them by mistake and crash the machine.- A slew of refurbishing around the Aspeed drivers (board management
controllers for servers) in preparation for the new Aspeed AST2600
SoC.- A slew of improvements over the SH PFC drivers as usual.
- Misc cleanups and fixes"
* tag 'pinctrl-v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (106 commits)
pinctrl: aspeed: Strip moved macros and structs from private header
pinctrl: aspeed: Fix missed include
pinctrl: baytrail: Use GENMASK() consistently
pinctrl: baytrail: Re-use data structures from pinctrl-intel.h
pinctrl: baytrail: Use defined macro instead of magic in byt_get_gpio_mux()
pinctrl: qcom: Add SM8150 pinctrl driver
dt-bindings: pinctrl: qcom: Add SM8150 pinctrl binding
dt-bindings: pinctrl: qcom: Document missing gpio nodes
pinctrl: aspeed: Add implementation-related documentation
pinctrl: aspeed: Split out pinmux from general pinctrl
pinctrl: aspeed: Clarify comment about strapping W1C
pinctrl: aspeed: Correct comment that is no longer true
MAINTAINERS: Add entry for ASPEED pinctrl drivers
dt-bindings: pinctrl: aspeed: Convert AST2500 bindings to json-schema
dt-bindings: pinctrl: aspeed: Convert AST2400 bindings to json-schema
dt-bindings: pinctrl: aspeed: Split bindings document in two
pinctrl: qcom: Add irq_enable callback for msm gpio
pinctrl: madera: Fixup SPDX headers
pinctrl: qcom: sdm845: Fix CONFIG preprocessor guard
pinctrl: tegra: Add bitmask support for parked bits
...
08 Jun, 2019
1 commit
-
platform_get_resource() may fail and return NULL, so we should
better check it's return value to avoid a NULL pointer dereference
a bit later in the code.Signed-off-by: Young Xiao
Reviewed-by: Ray Jui
Signed-off-by: Linus Walleij
02 Jun, 2019
1 commit
-
drivers/pinctrl/bcm/pinctrl-bcm2835.c: In function bcm2835_pctl_dt_node_to_map:
drivers/pinctrl/bcm/pinctrl-bcm2835.c:720:8: error: implicit declaration of function pinconf_generic_dt_node_to_map_all;
drivers/pinctrl/bcm/pinctrl-bcm2835.c: In function bcm2835_pinctrl_probe:
drivers/pinctrl/bcm/pinctrl-bcm2835.c:1022:15: error: struct gpio_chip has no member named of_node
pc->gpio_chip.of_node = np;Reported-by: Hulk Robot
Fixes: 0de704955ee4 ("pinctrl: bcm2835: Add support for generic pinctrl binding")
Signed-off-by: YueHaibing
Signed-off-by: Linus Walleij
23 May, 2019
1 commit
-
ARCH_BRCMSTB needs to use the BCM2835 pin controller for chips
like BCM7211 which adopted that pin controller for GPIO. This
commit makes the option menu configurable with default enabled
for ARCH_BRCMSTB and ARCH_BCM2835.Signed-off-by: Doug Berger
Signed-off-by: Florian Fainelli
Reviewed-by: Eric Anholt
Signed-off-by: Linus Walleij
21 May, 2019
1 commit
-
Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:GPL-2.0-only
Signed-off-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
08 Feb, 2019
2 commits
-
In order to support GPIO config changes direct these to the generic pinctrl.
This also requires an adjust of the return code for unsupported parameter
otherwise gpiod_configure_flags wont work as expected.Signed-off-by: Stefan Wahren
Signed-off-by: Linus Walleij -
Since commit 0de704955ee44 ("pinctrl: bcm2835: Add support for
generic pinctrl binding") this driver is capable to use the generic
interface. So declare this accordingly.Signed-off-by: Stefan Wahren
Signed-off-by: Linus Walleij
21 Dec, 2018
1 commit
-
Documentation has been recently updated specifying that pinctrl should
be subnode of the CRU "syscon". Support that by using parent node for
regmap and reading "offset" property from the DT.Signed-off-by: Rafał Miłecki
Signed-off-by: Linus Walleij
17 Nov, 2018
1 commit
-
Adopt the SPDX license identifier headers to ease license compliance
management.Cc: Simon Arlott
Cc: Stephen Warren
Signed-off-by: Stefan Wahren
Reviewed-by: Eric Anholt
Signed-off-by: Linus Walleij
09 Nov, 2018
1 commit
-
Clang warns when one enumerated type is implicitly converted to another:
drivers/pinctrl/bcm/pinctrl-bcm2835.c:707:40: warning: implicit
conversion from enumeration type 'enum bcm2835_pinconf_param' to
different enumeration type 'enum pin_config_param' [-Wenum-conversion]
configs[0] = pinconf_to_config_packed(BCM2835_PINCONF_PARAM_PULL, pull);
~~~~~~~~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.It is expected that pinctrl drivers can extend pin_config_param because
of the gap between PIN_CONFIG_END and PIN_CONFIG_MAX so this conversion
isn't an issue. Most drivers that take advantage of this define the
PIN_CONFIG variables as constants, rather than enumerated values. Do the
same thing here so that Clang no longer warns.Signed-off-by: Nathan Chancellor
Acked-by: Stefan Wahren
Signed-off-by: Linus Walleij
05 Nov, 2018
1 commit
-
The BCM2835 pinctrl driver acquires a spinlock in its ->irq_enable,
->irq_disable and ->irq_set_type callbacks. Spinlocks become sleeping
locks with CONFIG_PREEMPT_RT_FULL=y, therefore invocation of one of the
callbacks in atomic context may cause a hard lockup if at least two GPIO
pins in the same bank are used as interrupts. The issue doesn't occur
with just a single interrupt pin per bank because the lock is never
contended. I'm experiencing such lockups with GPIO 8 and 28 used as
level-triggered interrupts, i.e. with ->irq_disable being invoked on
reception of every IRQ.The critical section protected by the spinlock is very small (one bitop
and one RMW of an MMIO register), hence converting to a raw spinlock
seems a better trade-off than converting the driver to threaded IRQ
handling (which would increase latency to handle an interrupt).Cc: Mathias Duckeck
Signed-off-by: Lukas Wunner
Acked-by: Julia Cartwright
Signed-off-by: Linus Walleij
12 Oct, 2018
1 commit
-
Fix up a compiler error on 64bit architectures where pointers
and integers differ in size.Suggested-by: Arnd Bergmann
Signed-off-by: Rafał Miłecki
Signed-off-by: Linus Walleij
10 Oct, 2018
1 commit
-
This driver provides support for Northstar mux controller. It differs
from Northstar Plus one so a new binding and driver were needed.Signed-off-by: Rafał Miłecki
Signed-off-by: Linus Walleij
14 Jul, 2018
2 commits
-
platform_get_resource() may fail and return NULL, so we should
better check it's return value to avoid a NULL pointer dereference
a bit later in the code.This is detected by Coccinelle semantic patch.
@@
expression pdev, res, n, t, e, e1, e2;
@@res = platform_get_resource(pdev, t, n);
+ if (!res)
+ return -EINVAL;
... when != res == NULL
e = devm_ioremap_nocache(e1, res->start, e2);Fixes: cc4fa83f66e9 ("pinctrl: nsp: add pinmux driver support for Broadcom NSP SoC")
Signed-off-by: Wei Yongjun
Reviewed-by: Ray Jui
Signed-off-by: Linus Walleij -
The > comparisons should be >= or else we read beyond the end of the
pinctrl->functions[] array.Fixes: cc4fa83f66e9 ("pinctrl: nsp: add pinmux driver support for Broadcom NSP SoC")
Signed-off-by: Dan Carpenter
Reviewed-by: Ray Jui
Signed-off-by: Linus Walleij
13 Jun, 2018
1 commit
-
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:kzalloc(a * b, gfp)
with:
kcalloc(a * b, gfp)as well as handling cases of:
kzalloc(a * b * c, gfp)
with:
kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kzalloc(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.The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@(
kzalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kzalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@(
kzalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@(
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@- kzalloc
+ kcalloc
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@(
kzalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@(
kzalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@(
kzalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- 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 E1, E2, E3;
constant C1, C2, C3;
@@(
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- 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 THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@(
kzalloc(sizeof(THING) * C2, ...)
|
kzalloc(sizeof(TYPE) * C2, ...)
|
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- E1 * E2
+ E1, E2
, ...)
)Signed-off-by: Kees Cook
16 May, 2018
2 commits
-
Properties to set initial value of pin output buffer.
This can be useful for configure hardware in overlay files, and in early
boot for checking it states in QA sanity tests.Signed-off-by: Matheus Castello
Reviewed-by: Eric Anholt
Acked-by: Stefan Wahren
Signed-off-by: Linus Walleij -
To keep driver up to date we add generic pinctrl binding support, which
covers the features used in this driver and has additional node properties
that this SoC has compatibility, so enabling future implementations of
these properties without the need to create new node properties in the
device trees.The logic of this change maintain the old brcm legacy binding support in
order to keep the ABI stable.Signed-off-by: Matheus Castello
Reviewed-by: Eric Anholt
Acked-by: Stefan Wahren
Signed-off-by: Linus Walleij
17 Nov, 2017
1 commit
-
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v4.15 kernel cycle:Core:
- The pin control Kconfig entry PINCTRL is now turned into a
menuconfig option. This obviously has the implication of making the
subsystem menu visible in menuconfig. This is happening because of
two things:(a) Intel have started to deploy and depend on pin controllers in
a way that is affecting users directly. This happens on the
highly integrated laptop chipsets named after geographical
places: baytrail, broxton, cannonlake, cedarfork, cherryview,
denverton, geminilake, lewisburg, merrifield, sunrisepoint...
It started a while back and now it is ever more evident that
this is crucial infrastructure for x86 laptops and not an
embedded obscurity anymore. Users need to be aware.(b) Pin control expanders on I2C and SPI that are arch-agnostic.
Currently Semtech SX150X and Microchip MCP28x08 but more are
expected. Users will have to be able to configure these in
directly for their set-up.- Just go and select GPIOLIB now that we made sure that GPIOLIB is a
very vanilla subsystem. Do not depend on it, if we need it, select
it.- Exposing the pin control subsystem in menuconfig uncovered a bunch
of obscure bugs that are now hopefully fixed, all more or less
pertaining to Blackfin.- Unified namespace for cross-calls between pin control and GPIO.
- New support for clock skew/delay generic DT bindings and generic
pin config options for this.- Minor documentation improvements.
Various:
- The Renesas SH-PFC pin controller has evolved a lot. It seems
Renesas are churning out new SoCs by the minute.- A bunch of non-critical fixes for the Rockchip driver.
- Improve the use of library functions instead of open coding.
- Support the MCP28018 variant in the MCP28x08 driver.
- Static constifying"
* tag 'pinctrl-v4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (91 commits)
pinctrl: gemini: Fix missing pad descriptions
pinctrl: Add some depends on HAS_IOMEM
pinctrl: samsung/s3c24xx: add CONFIG_OF dependency
pinctrl: gemini: Fix GMAC groups
pinctrl: qcom: spmi-gpio: Add pmi8994 gpio support
pinctrl: ti-iodelay: remove redundant unused variable dev
pinctrl: max77620: Use common error handling code in max77620_pinconf_set()
pinctrl: gemini: Implement clock skew/delay config
pinctrl: gemini: Use generic DT parser
pinctrl: Add skew-delay pin config and bindings
pinctrl: armada-37xx: Add edge both type gpio irq support
pinctrl: uniphier: remove eMMC hardware reset pin-mux
pinctrl: rockchip: Add iomux-route switching support for rk3288
pinctrl: intel: Add Intel Cedar Fork PCH pin controller support
pinctrl: intel: Make offset to interrupt status register configurable
pinctrl: sunxi: Enforce the strict mode by default
pinctrl: sunxi: Disable strict mode for old pinctrl drivers
pinctrl: sunxi: Introduce the strict flag
pinctrl: sh-pfc: Save/restore registers for PSCI system suspend
pinctrl: sh-pfc: r8a7796: Use generic IOCTRL register description
...
15 Nov, 2017
1 commit
-
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v4.15 kernel cycle:Core:
- Fix the semantics of raw GPIO to actually be raw. No inversion
semantics as before, but also no open draining, and allow the raw
operations to affect lines used for interrupts as the caller
supposedly knows what they are doing if they are getting the big
hammer.- Rewrote the __inner_function() notation calls to names that make
more sense. I just find this kind of code disturbing.- Drop the .irq_base() field from the gpiochip since now all IRQs are
mapped dynamically. This is nice.- Support for .get_multiple() in the core driver API. This allows us
to read several GPIO lines with a single register read. This has
high value for some usecases: it can be used to create
oscilloscopes and signal analyzers and other things that rely on
reading several lines at exactly the same instant. Also a generally
nice optimization. This uses the new assign_bit() macro from the
bitops lib that was ACKed by Andrew Morton and is implemented for
two drivers, one of them being the generic MMIO driver so everyone
using that will be able to benefit from this.- Do not allow requests of Open Drain and Open Source setting of a
GPIO line simultaneously. If the hardware actually supports
enabling both at the same time the electrical result would be
disastrous.- A new interrupt chip core helper. This will be helpful to deal with
"banked" GPIOs, which means GPIO controllers with several logical
blocks of GPIO inside them. This is several gpiochips per device in
the device model, in contrast to the case when there is a 1-to-1
relationship between a device and a gpiochip.New drivers:
- Maxim MAX3191x industrial serializer, a very interesting piece of
professional I/O hardware.- Uniphier GPIO driver. This is the GPIO block from the recent
Socionext (ex Fujitsu and Panasonic) platform.- Tegra 186 driver. This is based on the new banked GPIO
infrastructure.Other improvements:
- Some documentation improvements.
- Wakeup support for the DesignWare DWAPB GPIO controller.
- Reset line support on the DesignWare DWAPB GPIO controller.
- Several non-critical bug fixes and improvements for the Broadcom
BRCMSTB driver.- Misc non-critical bug fixes like exotic errorpaths, removal of dead
code etc.- Explicit comments on fall-through switch() statements"
* tag 'gpio-v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (65 commits)
gpio: tegra186: Remove tegra186_gpio_lock_class
gpio: rcar: Add r8a77995 (R-Car D3) support
pinctrl: bcm2835: Fix some merge fallout
gpio: Fix undefined lock_dep_class
gpio: Automatically add lockdep keys
gpio: Introduce struct gpio_irq_chip.first
gpio: Disambiguate struct gpio_irq_chip.nested
gpio: Add Tegra186 support
gpio: Export gpiochip_irq_{map,unmap}()
gpio: Implement tighter IRQ chip integration
gpio: Move lock_key into struct gpio_irq_chip
gpio: Move irq_valid_mask into struct gpio_irq_chip
gpio: Move irq_nested into struct gpio_irq_chip
gpio: Move irq_chained_parent to struct gpio_irq_chip
gpio: Move irq_default_type to struct gpio_irq_chip
gpio: Move irq_handler to struct gpio_irq_chip
gpio: Move irqdomain into struct gpio_irq_chip
gpio: Move irqchip into struct gpio_irq_chip
gpio: Introduce struct gpio_irq_chip
pinctrl: armada-37xx: remove unused variable
...
09 Nov, 2017
2 commits
-
Fixing a small merge problem in BCM2835 related to the
new irqchip code.Cc: Thierry Reding
Signed-off-by: Linus Walleij
08 Nov, 2017
1 commit
-
In order to consolidate the multiple ways to associate an IRQ chip with
a GPIO chip, move more fields into the new struct gpio_irq_chip.Signed-off-by: Thierry Reding
Acked-by: Grygorii Strashko
Signed-off-by: Linus Walleij
02 Nov, 2017
1 commit
-
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.By default all files without license information are under the default
license of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if
Reviewed-by: Philippe Ombredanne
Reviewed-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
07 Oct, 2017
1 commit
-
These request/free functions are just reimplementations of the
standard helpers in gpiolib. Delete them and replace with the
helpers.Acked-by: Scott Branden
Signed-off-by: Linus Walleij
22 Sep, 2017
1 commit
-
The pinctrl_request_gpio() and pinctrl_free_gpio() break the nice
namespacing in the other cross-calls like pinctrl_gpio_foo().
Just rename them and all references so we have one namespace
with all cross-calls under pinctrl_gpio_*().Signed-off-by: Linus Walleij
21 Sep, 2017
1 commit
-
This patch fix the following build warning:
drivers/pinctrl/bcm/pinctrl-bcm2835.c:376:15: warning: variable 'type' set but not used [-Wunused-but-set-variable]Furthermore, it is unused for a long time, at least since commit 85ae9e512f43 ("pinctrl: bcm2835: switch to GPIOLIB_IRQCHIP")
where a "FIXME no clue why the code looks up the type here" was added.
A year after, nobody answeered this question, so its time to remove it.Signed-off-by: Corentin Labbe
Acked-by: Stefan Wahren
Signed-off-by: Linus Walleij
22 Aug, 2017
1 commit
-
This pinconf_ops structure is only stored in the const confops
field of a pinctrl_desc structure. Make the pinconf_ops structure
const as well.Done with the help of Coccinelle.
Signed-off-by: Julia Lawall
Signed-off-by: Linus Walleij
14 Aug, 2017
2 commits
-
The irq_group field stores a 1:1 mapping. Use the loop variable to
derive the values instead of storing them in an extra array.Signed-off-by: Thierry Reding
Signed-off-by: Linus Walleij -
Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.Signed-off-by: Rob Herring
Cc: Linus Walleij
Cc: Lee Jones
Cc: Stefan Wahren
Cc: Florian Fainelli
Cc: Ray Jui
Cc: Scott Branden
Cc: bcm-kernel-feedback-list@broadcom.com
Cc: Tomasz Figa
Cc: Sylwester Nawrocki
Cc: Laurent Pinchart
Cc: Barry Song
Cc: linux-gpio@vger.kernel.org
Cc: linux-rpi-kernel@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: kernel@stlinux.com
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org
Acked-by: Krzysztof Kozlowski
Acked-by: Ludovic Desroches
Acked-by: Patrice Chotard
Reviewed-by: Geert Uytterhoeven
Acked-by: Geert Uytterhoeven
Acked-by: Eric Anholt
Signed-off-by: Linus Walleij
