Hi Sato-san,
On Thu, Oct 19, 2023 at 4:03 AM Yoshinori Sato
wrote:
> On Wed, 18 Oct 2023 21:40:23 +0900,
> Geert Uytterhoeven wrote:
> > The new Linux SH7750 clock driver uses the registers for power-down
> > mode control, causing a crash:
> >
> >
Hi Adrian,
On Wed, Oct 18, 2023 at 2:46 PM John Paul Adrian Glaubitz
wrote:
> On Wed, 2023-10-18 at 14:40 +0200, Geert Uytterhoeven wrote:
> > The new Linux SH7750 clock driver uses the registers for power-down
> > mode control, causing a crash:
> >
> > b
The new Linux SH7750 clock driver uses the registers for power-down
mode control, causing a crash:
byte read to SH7750_STBCR_A7 (0x1fc4) not supported
Aborted (core dumped)
Fix this by adding support for the Standby Control Registers STBCR and
STBCR2.
Signed-off-by: Geert
The link
> contains the corresponding Linux patch.
>
> Link: https://lore.kernel.org/lkml/20220626111509.330159-1-ja...@zx2c4.com/
> Based-on: <20220625152318.120849-1-ja...@zx2c4.com>
> Reviewed-by: Laurent Vivier
> Signed-off-by: Jason A. Donenfeld
Rev
CC arnd
On Sun, Jun 5, 2022 at 9:32 AM Stafford Horne wrote:
> On Sun, Jun 05, 2022 at 10:58:14AM +0900, Stafford Horne wrote:
> > On Fri, Jun 03, 2022 at 09:05:09AM +0200, Geert Uytterhoeven wrote:
> > > On Thu, Jun 2, 2022 at 9:59 PM Stafford Horne wrote:
> > > >
Hi Stafford,
On Thu, Jun 2, 2022 at 9:59 PM Stafford Horne wrote:
> On Thu, Jun 02, 2022 at 09:08:52PM +0200, Geert Uytterhoeven wrote:
> > On Thu, Jun 2, 2022 at 1:42 PM Joel Stanley wrote:
> > > On Fri, 27 May 2022 at 17:27, Stafford Horne wrote:
> > > > This
little endian.
Unfortunately m68k got this wrong, cfr.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2e2ac4a3327479f7e2744cdd88a5c823f2057bad
Please don't duplicate this bad behavior for new architectures.
Gr{oetje,eeting}s,
Geert
--
Geert
Hi Philippe,
On Thu, Apr 23, 2020 at 12:08 PM Philippe Mathieu-Daudé wrote:
> On 4/23/20 11:33 AM, Philippe Mathieu-Daudé wrote:
> > On 4/23/20 11:01 AM, Geert Uytterhoeven wrote:
> >> Make the PL061 GPIO controller user-creatable, and allow the user to tie
> >> a
Hi Peter,
CC Rob, who made these properties mandatory in the pl061 DT bindings.
On Fri, May 22, 2020 at 11:30 AM Peter Maydell wrote:
> On Fri, 22 May 2020 at 09:29, Geert Uytterhoeven wrote:
> > On Thu, May 21, 2020 at 6:59 PM Peter Maydell
> > wrote:
> > > On T
Hi Peter,
On Thu, May 21, 2020 at 6:59 PM Peter Maydell wrote:
> On Tue, 19 May 2020 at 09:49, Geert Uytterhoeven
> wrote:
> > Make the created node comply with the PL061 Device Tree bindings:
> > - Use generic node name "gpio" instead of "pl061",
>
Hi Andy,
On Wed, May 20, 2020 at 2:41 PM Andy Shevchenko
wrote:
> On Wed, May 20, 2020 at 3:40 PM Andy Shevchenko
> wrote:
> > On Wed, May 20, 2020 at 3:38 PM Geert Uytterhoeven
> > wrote:
> > > On Wed, May 20, 2020 at 2:14 PM Andy Shevchenko
> > > wrote
Hi Andy,
On Wed, May 20, 2020 at 2:14 PM Andy Shevchenko
wrote:
> On Mon, May 11, 2020 at 04:52:51PM +0200, Geert Uytterhoeven wrote:
> > GPIO controllers are exported to userspace using /dev/gpiochip*
> > character devices. Access control to these devices is provided by
> &g
Add a definition for the number of GPIO lines controlled by a PL061
instance, and use it instead of the hardcoded magic value 8.
Suggested-by: Philippe Mathieu-Daudé
Signed-off-by: Geert Uytterhoeven
---
hw/gpio/pl061.c | 12 +++-
1 file changed, 7 insertions(+), 5 deletions(-)
diff
Make the created node comply with the PL061 Device Tree bindings:
- Use generic node name "gpio" instead of "pl061",
- Add missing "#interrupt-cells" and "interrupt-controller"
properties.
Signed-off-by: Geert Uytterhoeven
---
Split off from
...
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say &qu
er.be/)
[8] "[PATCH RFC] gpio: Add Virtual Aggregator GPIO Driver"
(https://lore.kernel.org/r/20190705160536.12047-1-geert+rene...@glider.be/)
[9] "[PATCH QEMU POC] Add a GPIO backend"
(https://lore.kernel.org/r/20181003152521.23144-1-geert+rene...@glider.be/)
Document the GPIO Aggregator, and the two typical use-cases.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Ulrich Hecht
Reviewed-by: Eugeniu Rosca
Tested-by: Eugeniu Rosca
---
v7:
- No changes,
v6:
- Fix "allows" without object:
-> provides a mechanism to ag
clear
that this field can have two meanings, and update the kerneldoc and
GPIO_LOOKUP*() macros.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Ulrich Hecht
Reviewed-by: Eugeniu Rosca
Tested-by: Eugeniu Rosca
---
v7:
- Document non-uniqueness of line names,
- Rebase on top of commit
i801_add_mux() fills in the GPIO lookup table by manually populating an
array of gpiod_lookup structures. Use the existing GPIO_LOOKUP_IDX()
helper macro instead, to relax a dependency on the gpiod_lookup
structure's member names.
Signed-off-by: Geert Uytterhoeven
Acked-by: Lee Jones
-
Add a maintainership section for the GPIO Aggregator, covering
documentation and driver source code.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Eugeniu Rosca
Tested-by: Eugeniu Rosca
---
v7:
- Maintained => Supported,
v6:
- No changes,
v5:
- Add Reviewed-by, Tested-by,
or virtual machine.
- Generic GPIO Driver
This is useful for industrial control, where it can provide
userspace access to a simple GPIO-operated device described in DT,
cfr. e.g. spidev for SPI-operated devices.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Eugeniu Rosca
Tested-by
i801_add_mux() fills in the GPIO lookup table by manually populating an
array of gpiod_lookup structures. Use the existing GPIO_LOOKUP() helper
macro instead, to relax a dependency on the gpiod_lookup structure's
member names.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Jean De
Hi Linus,
On Thu, Mar 26, 2020 at 10:18 PM Linus Walleij wrote:
> On Tue, Mar 24, 2020 at 2:57 PM Geert Uytterhoeven
> wrote:
> > Currently a GPIO lookup table can only refer to a specific GPIO by a
> > tuple, consisting of a GPIO controller label and a GPIO offset inside
Hi Philippe,
Thanks for your comments!
On Thu, Apr 23, 2020 at 11:28 AM Philippe Mathieu-Daudé wrote:
> On 4/23/20 11:01 AM, Geert Uytterhoeven wrote:
> > Add a GPIO controller backend, to connect virtual GPIOs on the guest to
> > physical GPIOs on the host. This allows the g
uot;#interrupt-cells" and "interrupt-controller"
properties.
Signed-off-by: Geert Uytterhoeven
---
v2:
- New.
---
hw/arm/virt.c | 20 +++-
hw/gpio/pl061.c | 42 +
include/hw/gpio/pl061.h | 7 ++
Add support for dynamically instantiating PL061 GPIO controller
instances in ARM virt. Device tree nodes are created dynamically.
Signed-off-by: Geert Uytterhoeven
---
v2:
- New.
---
hw/arm/sysbus-fdt.c | 18 ++
hw/arm/virt.c | 1 +
2 files changed, 19 insertions
Move the definition of TYPE_PL061 to a new header file, so it can be
used outside the driver.
Signed-off-by: Geert Uytterhoeven
---
v2:
- New.
---
MAINTAINERS | 1 +
hw/gpio/pl061.c | 2 +-
include/hw/gpio/pl061.h | 16
3 files changed, 18 insertions
(https://lore.kernel.org/linux-gpio/20181003152521.23144-1-geert+rene...@glider.be/)
[3] "Getting To Blinky: Virt Edition / Making device pass-through work
on embedded ARM"
(https://fosdem.org/2019/schedule/event/vai_getting_to_blinky/)
Geert Uytterhoeven (5):
ARM: PL061: Mo
,
- The number of GPIO lines mapped is limited to the number of GPIO
lines available on the virtual GPIO controller.
Future work:
- GPIO inputs,
- GPIO line configuration,
- Optimizations for controlling multiple GPIO lines at once,
- ...
Signed-off-by: Geert Uytterhoeven
---
v2
: Geert Uytterhoeven
---
v2:
- New.
---
hw/gpio/pl061.c | 35 +++
qemu-options.hx | 9 +
2 files changed, 44 insertions(+)
diff --git a/hw/gpio/pl061.c b/hw/gpio/pl061.c
index 74ba733a8a5e8ca5..98204f9a586ae8c8 100644
--- a/hw/gpio/pl061.c
+++ b/hw/gpio
Hi Linus,
On Thu, Mar 26, 2020 at 10:26 PM Linus Walleij wrote:
> On Tue, Mar 24, 2020 at 2:57 PM Geert Uytterhoeven
> wrote:
> > The GPIO Aggregator will need a method to forward a .set_config() call
> > to its parent gpiochip. This requires obtaining the gpio_chip and
>
or virtual machine.
- Generic GPIO Driver
This is useful for industrial control, where it can provide
userspace access to a simple GPIO-operated device described in DT,
cfr. e.g. spidev for SPI-operated devices.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Eugeniu Rosca
Tested-by
i801_add_mux() fills in the GPIO lookup table by manually populating an
array of gpiod_lookup structures. Use the existing GPIO_LOOKUP_IDX()
helper macro instead, to relax a dependency on the gpiod_lookup
structure's member names.
Signed-off-by: Geert Uytterhoeven
Cc: Lee Jones
---
While
impd1_probe() fills in the GPIO lookup table by manually populating an
array of gpiod_lookup structures. Use the existing GPIO_LOOKUP() helper
macro instead, to relax a dependency on the gpiod_lookup structure's
member names.
Signed-off-by: Geert Uytterhoeven
Cc: linux-ar
i801_add_mux() fills in the GPIO lookup table by manually populating an
array of gpiod_lookup structures. Use the existing GPIO_LOOKUP() helper
macro instead, to relax a dependency on the gpiod_lookup structure's
member names.
Signed-off-by: Geert Uytterhoeven
Cc: Jean Delvare
Cc:
Document the GPIO Aggregator, and the two typical use-cases.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Ulrich Hecht
Reviewed-by: Eugeniu Rosca
Tested-by: Eugeniu Rosca
---
v6:
- Fix "allows" without object:
-> provides a mechanism to aggregate GPIOs,
->
: Geert Uytterhoeven
Reviewed-by: Ulrich Hecht
Reviewed-by: Eugeniu Rosca
Tested-by: Eugeniu Rosca
---
v6:
- Update Documentation/driver-api/gpio/board.rst,
- Reword rationale,
v5:
- Add Reviewed-by, Tested-by,
v4:
- Add Reviewed-by,
- Rename gpiod_lookup.chip_label.
- Use U16_MAX
-off-by: Geert Uytterhoeven
---
v6:
- New.
---
drivers/gpio/gpiolib.c| 28 ++--
include/linux/gpio/consumer.h | 8
2 files changed, 30 insertions(+), 6 deletions(-)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index c756602e249c052e
Add a maintainership section for the GPIO Aggregator, covering
documentation and driver source code.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Eugeniu Rosca
Tested-by: Eugeniu Rosca
---
v6:
- No changes,
v5:
- Add Reviewed-by, Tested-by,
v4:
- Drop controversial GPIO repeater,
v3
| 6 +-
drivers/mfd/sm501.c | 24 +-
include/linux/gpio/consumer.h | 8 +
include/linux/gpio/machine.h | 15 +-
13 files changed, 776 insertions(+), 48 deletions(-)
create mode 100644 Documentation/admin-guide/gpio/gpio-aggregator.rst
On Tue, Feb 18, 2020 at 4:18 PM Geert Uytterhoeven
wrote:
> GPIO controllers are exported to userspace using /dev/gpiochip*
> character devices. Access control to these devices is provided by
> standard UNIX file system permissions, on an all-or-nothing basis:
> either a GPIO c
.
Thanks a lot for your comments!
> On Tue, Feb 18, 2020 at 4:18 PM Geert Uytterhoeven
> wrote:
> > +#define DRV_NAME "gpio-aggregator"
> > +#define pr_fmt(fmt)DRV_NAME ": " fmt
>
> I would just use dev_[info|err] for all messages to
Hi Linus,
On Thu, Mar 12, 2020 at 3:21 PM Linus Walleij wrote:
> On Tue, Feb 18, 2020 at 4:18 PM Geert Uytterhoeven
> wrote:
> > Currently GPIOs can only be referred to by GPIO controller and offset in
> > GPIO lookup tables.
> >
> > Add support for looking th
Hi Linus,
On Thu, Mar 12, 2020 at 3:23 PM Linus Walleij wrote:
> On Tue, Feb 18, 2020 at 4:18 PM Geert Uytterhoeven
> wrote:
>
> > Currently GPIO controllers can only be referred to by label in GPIO
> > lookup tables.
> >
> > Add support for looking them up
Hi Linus and Bartosz,
On Tue, Feb 18, 2020 at 4:18 PM Geert Uytterhoeven
wrote:
> GPIO controllers are exported to userspace using /dev/gpiochip*
> character devices. Access control to these devices is provided by
> standard UNIX file system permissions, on an all-or-nothing basis:
&
Hi Randy,
On Tue, Feb 18, 2020 at 7:30 PM Randy Dunlap wrote:
> On 2/18/20 7:18 AM, Geert Uytterhoeven wrote:
> > Document the GPIO Aggregator, and the two typical use-cases.
> >
> > Signed-off-by: Geert Uytterhoeven
> > --- /dev/null
> > +++ b/Do
On Tue, Feb 18, 2020 at 4:18 PM Geert Uytterhoeven
wrote:
> Currently GPIOs can only be referred to by GPIO controller and offset in
> GPIO lookup tables.
>
> Add support for looking them up by line name.
> Rename gpiod_lookup.chip_label to gpiod_lookup.key, to make it clear
> t
Hi Randy,
On Tue, Feb 18, 2020 at 7:30 PM Randy Dunlap wrote:
> On 2/18/20 7:18 AM, Geert Uytterhoeven wrote:
> > Document the GPIO Aggregator, and the two typical use-cases.
> >
> > Signed-off-by: Geert Uytterhoeven
> > --- /dev/null
> > +++ b/Do
t;
(https://lore.kernel.org/r/20181003152521.23144-1-geert+rene...@glider.be/)
[7] "Getting To Blinky: Virt Edition / Making device pass-through
work on embedded ARM"
(https://fosdem.org/2019/schedule/event/vai_getting_to_blinky/)
Geert Uytterhoeven (5):
gpiolib: Ad
Document the GPIO Aggregator, and the two typical use-cases.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Ulrich Hecht
Reviewed-by: Eugeniu Rosca
Tested-by: Eugeniu Rosca
---
v5:
- Add Reviewed-by, Tested-by,
- Fix inconsistent indentation.
v4:
- Add Reviewed-by,
- Drop
or virtual machine.
- Generic GPIO Driver
This is useful for industrial control, where it can provide
userspace access to a simple GPIO-operated device described in DT,
cfr. e.g. spidev for SPI-operated devices.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Eugeniu Rosca
Tested-by
Add a maintainership section for the GPIO Aggregator, covering
documentation and driver source code.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Eugeniu Rosca
Tested-by: Eugeniu Rosca
---
v5:
- Add Reviewed-by, Tested-by,
v4:
- Drop controversial GPIO repeater,
v3:
- New
Currently GPIO controllers can only be referred to by label in GPIO
lookup tables.
Add support for looking them up by "gpiochipN" name, with "N" the
corresponding GPIO device's ID number.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Ulrich Hecht
Reviewed-by: Eugeniu
.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Ulrich Hecht
Reviewed-by: Eugeniu Rosca
Tested-by: Eugeniu Rosca
---
v5:
- Add Reviewed-by, Tested-by,
v4:
- Add Reviewed-by,
- Rename gpiod_lookup.chip_label.
- Use U16_MAX instead of (u16)-1,
v3:
- New.
---
drivers/gpio/gpiolib.c
Hi Eugeniu,
On Sat, Jan 18, 2020 at 2:46 AM Eugeniu Rosca wrote:
> On Wed, Nov 27, 2019 at 09:42:46AM +0100, Geert Uytterhoeven wrote:
> > - Create aggregators:
> >
> > $ echo e6052000.gpio 19,20 \
> > > /sys/bus/platform/drivers/gpio-aggregator/new
.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Ulrich Hecht
---
v4:
- Add Reviewed-by,
- Rename gpiod_lookup.chip_label.
- Use U16_MAX instead of (u16)-1,
v3:
- New.
---
drivers/gpio/gpiolib.c | 22 +-
include/linux/gpio/machine.h | 15 ---
2
Currently GPIO controllers can only be referred to by label in GPIO
lookup tables.
Add support for looking them up by "gpiochipN" name, with "N" the
corresponding GPIO device's ID number.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Ulrich Hecht
---
v4:
- Add Revi
Document the GPIO Aggregator, and the two typical use-cases.
Signed-off-by: Geert Uytterhoeven
Reviewed-by: Ulrich Hecht
---
v4:
- Add Reviewed-by,
- Drop controversial GPIO repeater,
- Clarify industrial control use case,
- Fix typo s/communicated/communicate/,
- Replace abstract
rene...@glider.be/)
[5] "[PATCH QEMU POC] Add a GPIO backend"
(https://lore.kernel.org/linux-renesas-soc/20181003152521.23144-1-geert+rene...@glider.be/)
[6] "Getting To Blinky: Virt Edition / Making device pass-through
work on embedded ARM"
(https://
or virtual machine.
- Generic GPIO Driver
This is useful for industrial control, where it can provide
userspace access to a simple GPIO-operated device described in DT,
cfr. e.g. spidev for SPI-operated devices.
Signed-off-by: Geert Uytterhoeven
---
v4:
- Remove unused assignment
Add a maintainership section for the GPIO Aggregator, covering
documentation and driver source code.
Signed-off-by: Geert Uytterhoeven
---
v4:
- Drop controversial GPIO repeater,
v3:
- New.
---
MAINTAINERS | 7 +++
1 file changed, 7 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
Hi Eugeniu,
On Tue, Dec 3, 2019 at 11:51 AM Eugeniu Rosca wrote:
> On Wed, Nov 27, 2019 at 09:42:51AM +0100, Geert Uytterhoeven wrote:
> > +static int gpio_aggregator_probe(struct platform_device *pdev)
> > +{
> > + struct device *dev = &pdev->dev;
> &
Hi Linus,
On Sat, Jan 4, 2020 at 1:38 AM Linus Walleij wrote:
> Sorry for slowness... christmas.
Np. Happy New Year!
> On Thu, Dec 12, 2019 at 4:24 PM Geert Uytterhoeven
> wrote:
> > On Thu, Dec 12, 2019 at 3:34 PM Linus Walleij
> > wrote:
> > > > +
Hi Rob,
On Fri, Dec 6, 2019 at 4:04 PM Rob Herring wrote:
> On Fri, Dec 6, 2019 at 3:17 AM Geert Uytterhoeven
> wrote:
> > On Thu, Dec 5, 2019 at 10:06 PM Rob Herring wrote:
> > > On Wed, Nov 27, 2019 at 09:42:50AM +0100, Geert Uytterhoeven wrote:
> > > > Ad
Hi Linus,
On Sat, Jan 4, 2020 at 1:21 AM Linus Walleij wrote:
> On Thu, Dec 12, 2019 at 3:48 PM Geert Uytterhoeven
> wrote:
> > On Thu, Dec 12, 2019 at 3:42 PM Linus Walleij
> > wrote:
> > > On Wed, Nov 27, 2019 at 9:43 AM Geert Uytterhoeven
> > > wrote:
Hi Linus,
On Thu, Dec 12, 2019 at 3:34 PM Linus Walleij wrote:
> On Wed, Nov 27, 2019 at 9:43 AM Geert Uytterhoeven
> wrote:
> > GPIO controllers are exported to userspace using /dev/gpiochip*
> > character devices. Access control to these devices is provided by
> > s
Hi Linus,
On Thu, Dec 12, 2019 at 3:42 PM Linus Walleij wrote:
> On Wed, Nov 27, 2019 at 9:43 AM Geert Uytterhoeven
> wrote:
> > +The GPIO Aggregator allows access control for individual GPIOs, by
> > aggregating
> > +them into a new gpio_chip, which can be assigned
Hi Linus,
On Thu, Dec 12, 2019 at 2:20 PM Linus Walleij wrote:
> On Wed, Nov 27, 2019 at 9:43 AM Geert Uytterhoeven
> wrote:
> > Currently GPIO controllers can only be referred to by label in GPIO
> > lookup tables.
> >
> > Add support for looking them up by &qu
Hi Rob,
On Thu, Dec 5, 2019 at 10:06 PM Rob Herring wrote:
> On Wed, Nov 27, 2019 at 09:42:50AM +0100, Geert Uytterhoeven wrote:
> > Add Device Tree bindings for a GPIO repeater, with optional translation
> > of physical signal properties. This is useful for describing exp
n -EPROBE_DEFER;
So gpiod_get_index() nevers return -EPROBE_DEFER, but returns -ENOENT
instead?
How can a driver distinguish between "GPIO not found" and "gpiochip driver
not yet initialized"?
Worse, so the *_optional() variants will return NULL in both cases, too, so
Hi Eugeniu,
On Wed, Nov 27, 2019 at 3:15 PM Eugeniu Rosca wrote:
> On Wed, Nov 27, 2019 at 09:42:51AM +0100, Geert Uytterhoeven wrote:
> > +static bool isrange(const char *s)
> > +{
> > + size_t n = strlen(s);
>
> Cppcheck 1.40-18521-ge6d692d96058:
> driver
e "driver_override" in sysfs
+*/
+ {},
+};
+MODULE_DEVICE_TABLE(of, gpio_aggregator_dt_ids);
+#endif
+
+static struct platform_driver gpio_aggregator_driver = {
+ .probe = gpio_aggregator_probe,
+ .driver = {
+ .name = DRV_NAME,
+ .groups = gpio_aggregator_groups,
+ .of_match_table = of_match_ptr(gpio_aggregator_dt_ids),
+ },
+};
+
+static int __init gpio_aggregator_init(void)
+{
+ return platform_driver_register(&gpio_aggregator_driver);
+}
+module_init(gpio_aggregator_init);
+
+static void __exit gpio_aggregator_exit(void)
+{
+ gpio_aggregator_remove_all();
+ platform_driver_unregister(&gpio_aggregator_driver);
+}
+module_exit(gpio_aggregator_exit);
+
+MODULE_AUTHOR("Geert Uytterhoeven ");
+MODULE_DESCRIPTION("GPIO Aggregator/Repeater");
+MODULE_LICENSE("GPL v2");
--
2.17.1
Document the GPIO Aggregator/Repeater, and the three typical use-cases.
Signed-off-by: Geert Uytterhoeven
---
v3:
- New.
---
.../admin-guide/gpio/gpio-aggregator.rst | 111 ++
Documentation/admin-guide/gpio/index.rst | 1 +
2 files changed, 112 insertions
renesas-soc/20181003152521.23144-1-geert+rene...@glider.be/)
[5] "Getting To Blinky: Virt Edition / Making device pass-through
work on embedded ARM"
(https://fosdem.org/2019/schedule/event/vai_getting_to_blinky/)
Geert Uytterhoeven (7):
gpiolib: Add GPIOCHIP_NAME definiti
ore.kernel.org/linux-renesas-soc/20190607172958.20745-1-ero...@de.adit-jv.com/
Signed-off-by: Geert Uytterhoeven
---
v3:
- New.
---
.../bindings/gpio/gpio-repeater.yaml | 53 +++
1 file changed, 53 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpi
The string literal "gpiochip" is used in several places.
Add a definition for it, and use it everywhere, to make sure everything
stays in sync.
Signed-off-by: Geert Uytterhoeven
---
v3:
- New.
---
drivers/gpio/gpiolib-sysfs.c | 7 +++
drivers/gpio/gpiolib.c | 4 ++--
dr
Currently GPIO controllers can only be referred to by label in GPIO
lookup tables.
Add support for looking them up by "gpiochipN" name, with "N" either the
corresponding GPIO device's ID number, or the GPIO controller's first
GPIO number.
Signed-off-by: Geer
Currently GPIOs can only be referred to by GPIO controller and offset in
GPIO lookup tables.
Add support for looking them up by line name.
Signed-off-by: Geert Uytterhoeven
---
If this is rejected, the GPIO Aggregator documentation and code must be
updated.
v3:
- New.
---
drivers/gpio
Add a maintainership section for the GPIO Aggregator/Repeater, covering
documentation, Device Tree bindings, and driver source code.
Signed-off-by: Geert Uytterhoeven
---
Harish: Do you want to be listed as maintainer, too?
v3:
- New.
---
MAINTAINERS | 8
1 file changed, 8
Hi Linus,
On Thu, Sep 12, 2019 at 10:56 AM Linus Walleij wrote:
> On Fri, Jul 5, 2019 at 5:05 PM Geert Uytterhoeven
> wrote:
> > GPIO controllers are exported to userspace using /dev/gpiochip*
> > character devices. Access control to these devices is provided by
> > s
Add a helper for creating GPIO chips that merely forward all operations
to other GPIOs.
This will be used by the GPIO Aggregator.
Signed-off-by: Geert Uytterhoeven
---
I expect this can be used by the GPIO inverter, too, after adding an
"invert" flag, or a filter function that ch
rt+rene...@glider.be/)
- [3] "Getting To Blinky: Virt Edition / Making device pass-through
work on embedded ARM"
(https://fosdem.org/2019/schedule/event/vai_getting_to_blinky/)
Geert Uytterhoeven (5):
gpio: Export gpiod_{request,free}() to modular GPIO code
gpio: Export
Export the gpiod_request() and gpiod_free() symbols, so modular GPIO
library code can make use of these functions.
Signed-off-by: Geert Uytterhoeven
---
ERROR: "gpiod_free" [drivers/gpio/gpiolib-fwd.ko] undefined!
ERROR: "gpiod_request" [drivers/gpio/gpiolib-fwd.ko] unde
Make gpio_name_to_desc() global, and export its symbol, so modular GPIO
driver can make use of this function.
This will be used by the GPIO Aggregator.
Signed-off-by: Geert Uytterhoeven
---
drivers/gpio/gpiolib.c | 3 ++-
drivers/gpio/gpiolib.h | 1 +
2 files changed, 3 insertions(+), 1
> /sys/bus/platform/drivers/gpio-aggregator/delete_device
Signed-off-by: Geert Uytterhoeven
---
v2:
- Add missing initialization of i in gpio_virt_agg_probe(),
- Update for removed .need_valid_mask field and changed
.init_valid_mask() signature,
- Drop "virtual", rename to
Export the gpiochip_get_desc() symbol, so modular GPIO driver can make
use of this function again.
This is a partial revert of commit 1bd6b601fe196b6f ("gpio: make
gpiochip_get_desc() gpiolib-private").
Signed-off-by: Geert Uytterhoeven
---
ERROR: "gpiochip_get_desc"
Hi Bartosz,
On Fri, Jul 12, 2019 at 11:27 AM Bartosz Golaszewski
wrote:
> wt., 9 lip 2019 o 17:59 Geert Uytterhoeven napisał(a):
> > On Tue, Jul 9, 2019 at 4:59 PM Bartosz Golaszewski
> > wrote:
> > > pon., 8 lip 2019 o 12:24 Geert Uytterhoeven
> > > napisa
On Tue, Jul 9, 2019 at 4:59 PM Bartosz Golaszewski
wrote:
> pon., 8 lip 2019 o 12:24 Geert Uytterhoeven napisał(a):
> > On Mon, Jul 8, 2019 at 11:45 AM Bartosz Golaszewski
> > wrote:
> > > pt., 5 lip 2019 o 18:05 Geert Uytterhoeven
> > >
Hi Phil,
On Thu, Jul 11, 2019 at 11:24 AM Phil Reid wrote:
> On 10/07/2019 18:21, Geert Uytterhoeven wrote:
> > On Wed, Jul 10, 2019 at 4:00 AM Phil Reid wrote:
> >> On 6/07/2019 00:05, Geert Uytterhoeven wrote:
> >>> GPIO controllers are exported to
Hi Phil,
On Wed, Jul 10, 2019 at 4:00 AM Phil Reid wrote:
> On 6/07/2019 00:05, Geert Uytterhoeven wrote:
> > GPIO controllers are exported to userspace using /dev/gpiochip*
> > character devices. Access control to these devices is provided by
> > standard UNIX file syst
Hi Bartosz,
On Tue, Jul 9, 2019 at 4:59 PM Bartosz Golaszewski
wrote:
> pon., 8 lip 2019 o 12:24 Geert Uytterhoeven napisał(a):
> > On Mon, Jul 8, 2019 at 11:45 AM Bartosz Golaszewski
> > wrote:
> > > pt., 5 lip 2019 o 18:05 Geert Uytterhoeven
> > > napisał
Hi Bartosz,
On Mon, Jul 8, 2019 at 11:45 AM Bartosz Golaszewski
wrote:
> pt., 5 lip 2019 o 18:05 Geert Uytterhoeven
> napisał(a):
> > GPIO controllers are exported to userspace using /dev/gpiochip*
> > character devices. Access control to these devices is provided by
>
$ echo " [ ...]"
"[, [ ...]] ...]"
> /sys/bus/platform/drivers/gpio-virt-agg/new_device
Likewise, virtual GPIO controllers can be destroyed after use:
$ echo gpio-virt-agg. \
> /sys/bus/platform/drivers/gpio-virt-agg/delete_devic
Hi Peter,
Thanks for your comments!
On Wed, Jan 9, 2019 at 5:03 PM Peter Maydell wrote:
> On Wed, 9 Jan 2019 at 15:55, Auger Eric wrote:
> > On 1/3/19 10:42 AM, Geert Uytterhoeven wrote:
> > > Add a fallback for instantiating generic devices without a type-specific
> >
Hi Eric,
Thanks for your comments!
On Wed, Jan 9, 2019 at 4:56 PM Auger Eric wrote:
> On 1/3/19 10:42 AM, Geert Uytterhoeven wrote:
> > Add a fallback for instantiating generic devices without a type-specific
> > or compatible-specific instantiation method. This will be used wh
ce vfio-platform,host=ee300000.sata
Signed-off-by: Geert Uytterhoeven
---
Note: Also tested with GPIO, which needs "vfio: No-IOMMU mode support":
-device vfio-platform,host=e6055400.gpio
v5:
- Replace copying of a fixed list of properties (and ignoring all
others), by scanning
ode duplication
> - mention the ramfb regression fixed by this patch in the
> commit message.
Thanks for looking into this!
After applying "hw/arm/sysbus-fdt: Add support for instantiating generic
devices", "-device vfio-platform,host=ee30.sata" still works fine.
igned-off-by: Geert Uytterhoeven
---
Thanks for your comments!
---
backends/Makefile.objs | 2 +
backends/gpiodev.c | 183 +++
configure| 29 +++
hw/arm/virt.c| 6 ++
include/sysemu/gpiodev.h | 11 +++
qemu-o
Hi Paolo,
On Tue, Sep 11, 2018 at 3:11 PM Paolo Bonzini wrote:
> On 05/09/2018 15:11, Geert Uytterhoeven wrote:
> > As of commit 18e8cf159177100e ("serial: sh-sci: increase RX FIFO trigger
> > defaults for (H)SCIF") in Linux v4.11-rc1, the serial console on the
> >
form,host=ee30.sata
and GPIO (needs VFIO No-IOMMU support):
-device vfio-platform,host=e6055400.gpio
Thanks for applying!
Auger Eric (2):
vfio/platform: Make the vfio-platform device non-abstract
hw/arm/sysbus-fdt: Allow device matching with DT compatible value
Geert Uyt
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