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  1. 29 9月, 2020 1 次提交
  3. 27 8月, 2020 1 次提交
    • S
      gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chip · 0ea68393
      由 Serge Semin 提交于 
      GPIO-lib provides a ready-to-use interface to initialize an IRQ-chip on
top of a GPIO chip. It's better from maintainability and readability
point of view to use one instead of supporting a hand-written Generic
IRQ-chip-based implementation. Moreover the new implementation won't
cause much functional overhead but will provide a cleaner driver code.
All of that makes the DW APB GPIO driver conversion pretty much justified
especially seeing a tendency of the other GPIO drivers getting converted
too.

Here is what we do in the framework of this commit to convert the driver
to using the GPIO-lib-based IRQ-chip interface:

1) IRQ ack, mask and unmask callbacks are locally defined instead of
using the Generic IRQ-chip ones.

2) An irq_chip structure instance is embedded into the dwapb_gpio
private data. Note we can't have a static instance of that structure since
GPIO-lib will add some hooks into it by calling gpiochip_set_irq_hooks().
A warning about that would have been printed by the GPIO-lib code if we
used a single irq_chip structure instance for multiple DW APB GPIO
controllers.

3) Initialize the gpio_irq_chip structure embedded into the gpio_chip
descriptor. By default there is no IRQ enabled so any event raised will be
handled by the handle_bad_irq() IRQ flow handler. If DW APB GPIO IP-core
is synthesized to have non-shared reference IRQ-lines, then as before the
hierarchical and cascaded cases are distinguished by checking how many
parental IRQs are defined. (Note irq_set_chained_handler_and_data() won't
initialize IRQs, which descriptors couldn't be found.) If DW APB GPIO IP
is used on a platform with shared IRQ line, then we simply won't let the
GPIO-lib to initialize the parental IRQs, but will handle them locally in
the driver.

4) Discard linear IRQ-domain and Generic IRQ-chip initialization, since
GPIO-lib IRQ-chip interface will create a new domain and accept a standard
IRQ-chip structure pointer based on the setting we provided in the
gpio_irq_chip structure.

5) Manually select a proper IRQ flow handler directly in the
irq_set_type() callback by calling irq_set_handler_locked() method, since
an ordinary (not Generic) irq_chip descriptor is now utilized. Note this
shalln't give any regression

6) Alter CONFIG_GPIO_DWAPB kernel config to select
CONFIG_GPIOLIB_IRQCHIP instead of CONFIG_GENERIC_IRQ_CHIP.

Note neither 4) nor 5) shall cause a regression of commit 6a2f4b7d
("gpio: dwapb: use a second irq chip"), since the later isn't properly
used here anyway.
Signed-off-by: NSerge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200730152808.2955-6-Sergey.Semin@baikalelectronics.ruSigned-off-by: NLinus Walleij <linus.walleij@linaro.org>
      0ea68393
  5. 16 7月, 2020 1 次提交
  7. 24 6月, 2020 1 次提交
  9. 14 6月, 2020 1 次提交
    • M
      treewide: replace '---help---' in Kconfig files with 'help' · a7f7f624
      由 Masahiro Yamada 提交于 
      Since commit 84af7a61 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'
Signed-off-by: NMasahiro Yamada <masahiroy@kernel.org>
      a7f7f624
  11. 03 6月, 2020 1 次提交
  13. 25 5月, 2020 2 次提交
  15. 18 5月, 2020 3 次提交
  17. 14 4月, 2020 1 次提交
  19. 25 3月, 2020 2 次提交
  21. 09 3月, 2020 1 次提交
  23. 24 1月, 2020 1 次提交
    • M
      gpio: bd71828: Initial support for ROHM BD71828 PMIC GPIOs · c31f625d
      由 Matti Vaittinen 提交于 
      ROHM BD71828 PMIC contains 4 pins which can be configured by OTP
to be used for general purposes. First 3 can be used as outputs
and 4.th pin can be used as input. Allow them to be controlled
via GPIO framework.

The driver assumes all of the pins are configured as GPIOs and
trusts that the reserved pins in other OTP configurations are
excluded from control using "gpio-reserved-ranges" device tree
property (or left untouched by GPIO users).

Typical use for 4.th pin (input) is to use it as HALL sensor
input so that this pin state is toggled when HALL sensor detects
LID position change (from close to open or open to close). PMIC
HW implements some extra logic which allows PMIC to power-up the
system when this pin is toggled. Please see the data sheet for
details of GPIO options which can be selected by OTP settings.
Signed-off-by: NMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
      c31f625d
  25. 21 1月, 2020 1 次提交
  27. 15 1月, 2020 3 次提交
  29. 07 1月, 2020 1 次提交
  31. 16 12月, 2019 1 次提交
  33. 13 12月, 2019 2 次提交
  35. 01 11月, 2019 1 次提交
  37. 29 10月, 2019 2 次提交
  39. 09 10月, 2019 1 次提交
  41. 05 10月, 2019 1 次提交
  43. 01 10月, 2019 1 次提交
  45. 20 8月, 2019 1 次提交
  47. 16 8月, 2019 1 次提交
  49. 15 8月, 2019 2 次提交
    • L
      gpio: thunderx: Switch to GPIOLIB_IRQCHIP · a7fc89f9
      由 Linus Walleij 提交于 
      Use the new infrastructure for hierarchical irqchips in
gpiolib.

The major part of the rewrite was dues to the fact that
the driver was passing around a per-irq pointer to
struct thunderx_line * data container, and the central
handlers will assume struct gpio_chip * to be passed
to we need to use the hwirq as index to look up the
struct thunderx_line * for each IRQ.

The pushing and pop:ing of the irqdomain was confusing
because I've never seen this before, but I tried to
replicate it as best I could.

I have no chance to test or debug this so I need
help.

Cc: David Daney <david.daney@cavium.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Brian Masney <masneyb@onstation.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20190808123242.5359-4-linus.walleij@linaro.org
      a7fc89f9
    • L
      gpio: ixp4xx: Convert to hierarchical GPIOLIB_IRQCHIP · aa7d618a
      由 Linus Walleij 提交于 
      This modifies the IXP4xx driver to use the new helpers
to handle the remapping of parent to child hardware irqs
in the gpiolib core.

This pulls the majority of the code out of the driver
and use the generic code in gpiolib.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Lina Iyer <ilina@codeaurora.org>
Cc: Jon Hunter <jonathanh@nvidia.com>
Cc: Sowjanya Komatineni <skomatineni@nvidia.com>
Cc: Bitan Biswas <bbiswas@nvidia.com>
Cc: linux-tegra@vger.kernel.org
Cc: Thierry Reding <treding@nvidia.com>
Cc: Brian Masney <masneyb@onstation.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20190808123242.5359-2-linus.walleij@linaro.org
      aa7d618a
  51. 14 8月, 2019 2 次提交
  53. 12 8月, 2019 1 次提交
  55. 15 7月, 2019 1 次提交
  57. 04 7月, 2019 1 次提交
  59. 27 6月, 2019 1 次提交