Commit Graph

3717 Commits

Author SHA1 Message Date
Linus Torvalds 114b5f8f7e This is the bulk of GPIO changes for the v4.20 series:
Core changes:
 
 - A patch series from Hans Verkuil to make it possible to
   enable/disable IRQs on a GPIO line at runtime and drive GPIO
   lines as output without having to put/get them from scratch.
   The irqchip callbacks have been improved so that they can
   use only the fastpatch callbacks to enable/disable irqs
   like any normal irqchip, especially the gpiod_lock_as_irq()
   has been improved to be callable in fastpath context.
   A bunch of rework had to be done to achieve this but it is
   a big win since I never liked to restrict this to slowpath.
   The only call requireing slowpath was try_module_get() and
   this is kept at the .request_resources() slowpath callback.
   In the GPIO CEC driver this is a big win sine a single
   line is used for both outgoing and incoming traffic, and
   this needs to use IRQs for incoming traffic while actively
   driving the line for outgoing traffic.
 
 - Janusz Krzysztofik improved the GPIO array API to pass a
   "cookie" (struct gpio_array) and a bitmap for setting or
   getting multiple GPIO lines at once. This improvement
   orginated in a specific need to speed up an OMAP1 driver and
   has led to a much better API and real performance gains
   when the state of the array can be used to bypass a lot
   of checks and code when we want things to go really fast.
   The previous code would minimize the number of calls
   down to the driver callbacks assuming the CPU speed was
   orders of magnitude faster than the I/O latency, but this
   assumption was wrong on several platforms: what we needed
   to do was to profile and improve the speed on the hot
   path of the array functions and this change is now
   completed.
 
 - Clean out the painful and hard to grasp BNF experiments
   from the device tree bindings. Future approaches are looking
   into using JSON schema for this purpose. (Rob Herring
   is floating a patch series.)
 
 New drivers:
 
 - The RCAR driver now supports r8a774a1 (RZ/G2M).
 
 - Synopsys GPIO via CREGs driver.
 
 Major improvements:
 
 - Modernization of the EP93xx driver to use irqdomain and
   other contemporary concepts.
 
 - The ingenic driver has been merged into the Ingenic pin
   control driver and removed from the GPIO subsystem.
 
 - Debounce support in the ftgpio010 driver.
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Merge tag 'gpio-v4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v4.20 series:

  Core changes:

   - A patch series from Hans Verkuil to make it possible to
     enable/disable IRQs on a GPIO line at runtime and drive GPIO lines
     as output without having to put/get them from scratch.

     The irqchip callbacks have been improved so that they can use only
     the fastpatch callbacks to enable/disable irqs like any normal
     irqchip, especially the gpiod_lock_as_irq() has been improved to be
     callable in fastpath context.

     A bunch of rework had to be done to achieve this but it is a big
     win since I never liked to restrict this to slowpath. The only call
     requireing slowpath was try_module_get() and this is kept at the
     .request_resources() slowpath callback. In the GPIO CEC driver this
     is a big win sine a single line is used for both outgoing and
     incoming traffic, and this needs to use IRQs for incoming traffic
     while actively driving the line for outgoing traffic.

   - Janusz Krzysztofik improved the GPIO array API to pass a "cookie"
     (struct gpio_array) and a bitmap for setting or getting multiple
     GPIO lines at once.

     This improvement orginated in a specific need to speed up an OMAP1
     driver and has led to a much better API and real performance gains
     when the state of the array can be used to bypass a lot of checks
     and code when we want things to go really fast.

     The previous code would minimize the number of calls down to the
     driver callbacks assuming the CPU speed was orders of magnitude
     faster than the I/O latency, but this assumption was wrong on
     several platforms: what we needed to do was to profile and improve
     the speed on the hot path of the array functions and this change is
     now completed.

   - Clean out the painful and hard to grasp BNF experiments from the
     device tree bindings. Future approaches are looking into using JSON
     schema for this purpose. (Rob Herring is floating a patch series.)

  New drivers:

   - The RCAR driver now supports r8a774a1 (RZ/G2M).

   - Synopsys GPIO via CREGs driver.

  Major improvements:

   - Modernization of the EP93xx driver to use irqdomain and other
     contemporary concepts.

   - The ingenic driver has been merged into the Ingenic pin control
     driver and removed from the GPIO subsystem.

   - Debounce support in the ftgpio010 driver"

* tag 'gpio-v4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (116 commits)
  gpio: Clarify kerneldoc on gpiochip_set_chained_irqchip()
  gpio: Remove unused 'irqchip' argument to gpiochip_set_cascaded_irqchip()
  gpio: Drop parent irq assignment during cascade setup
  mmc: pwrseq_simple: Fix incorrect handling of GPIO bitmap
  gpio: fix SNPS_CREG kconfig dependency warning
  gpiolib: Initialize gdev field before is used
  gpio: fix kernel-doc after devres.c file rename
  gpio: fix doc string for devm_gpiochip_add_data() to not talk about irq_chip
  gpio: syscon: Fix possible NULL ptr usage
  gpiolib: Show correct direction from the beginning
  pinctrl: msm: Use init_valid_mask exported function
  gpiolib: Add init_valid_mask exported function
  GPIO: add single-register GPIO via CREG driver
  dt-bindings: Document the Synopsys GPIO via CREG bindings
  gpio: mockup: use device properties instead of platform_data
  gpio: Slightly more helpful debugfs
  gpio: omap: Remove set but not used variable 'dev'
  gpio: omap: drop omap_gpio_list
  Accept partial 'gpio-line-names' property.
  gpio: omap: get rid of the conditional PM runtime calls
  ...
2018-10-23 08:45:05 +01:00
Linus Torvalds b0b6a28bc4 This is the bulk of pin control changes for the v4.20 series:
There were no significant changes to the core this time!
 
 New drivers:
 
 - Broadcom Northstar pin control driver.
 
 - Mediatek MT8183 subdriver.
 
 - Mediatek MT7623 subdriver.
 
 - Mediatek MT6765 subdriver.
 
 - Meson g12a subdriver.
 
 - Nuvoton NPCM7xx pin control and GPIO driver.
 
 - Qualcomm QCS404 pin control and GPIO subdriver.
 
 - Qualcomm SDM660 pin control and GPIO subdriver.
 
 - Renesas R8A7744 PFC subdriver.
 
 - Renesas R8A774C0 PFC subdriver.
 
 - Renesas RZ/N1 pinctrl driver
 
 Major improvements:
 
 - Pulled the GPIO support for Ingenic over from the GPIO
   subsystem and consolidated it all in the Ingenic pin control
   driver.
 
 - Major cleanups and consolidation work in all Intel drivers.
 
 - Major cleanups and consolidation work in all Mediatek drivers.
 
 - Lots of incremental improvements to the Renesas PFC pin
   controller family.
 
 - All drivers doing GPIO now include <linux/gpio/driver.h> and
   nothing else.
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Merge tag 'pinctrl-v4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v4.20 series:

  There were no significant changes to the core this time! Bur the new
  Qualcomm, Mediatek and Broadcom drivers are quite interesting as they
  will be used in a few million embedded devices the coming years as it
  seems.

  New drivers:

   - Broadcom Northstar pin control driver.

   - Mediatek MT8183 subdriver.

   - Mediatek MT7623 subdriver.

   - Mediatek MT6765 subdriver.

   - Meson g12a subdriver.

   - Nuvoton NPCM7xx pin control and GPIO driver.

   - Qualcomm QCS404 pin control and GPIO subdriver.

   - Qualcomm SDM660 pin control and GPIO subdriver.

   - Renesas R8A7744 PFC subdriver.

   - Renesas R8A774C0 PFC subdriver.

   - Renesas RZ/N1 pinctrl driver

  Major improvements:

   - Pulled the GPIO support for Ingenic over from the GPIO subsystem
     and consolidated it all in the Ingenic pin control driver.

   - Major cleanups and consolidation work in all Intel drivers.

   - Major cleanups and consolidation work in all Mediatek drivers.

   - Lots of incremental improvements to the Renesas PFC pin controller
     family.

   - All drivers doing GPIO now include <linux/gpio/driver.h> and
     nothing else"

* tag 'pinctrl-v4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (153 commits)
  pinctrl: sunxi: Fix a memory leak in 'sunxi_pinctrl_build_state()'
  gpio: uniphier: include <linux/bits.h> instead of <linux/bitops.h>
  pinctrl: uniphier: include <linux/bits.h> instead of <linux/bitops.h>
  dt-bindings: pinctrl: bcm4708-pinmux: improve example binding
  pinctrl: geminilake: Sort register offsets by value
  pinctrl: geminilake: Get rid of unneeded ->probe() stub
  pinctrl: geminilake: Update pin list for B0 stepping
  pinctrl: renesas: Fix platform_no_drv_owner.cocci warnings
  pinctrl: mediatek: Make eint_m u16
  pinctrl: bcm: ns: Use uintptr_t for casting data
  pinctrl: madera: Fix uninitialized variable bug in madera_mux_set_mux
  pinctrl: gemini: Fix up TVC clock group
  pinctrl: gemini: Drop noisy debug prints
  pinctrl: gemini: Mask and set properly
  pinctrl: mediatek: select GPIOLIB
  pinctrl: rza1: don't manually release devm managed resources
  MAINTAINERS: update entry for Mediatek pin controller
  pinctrl: bcm: add Northstar driver
  dt-bindings: pinctrl: document Broadcom Northstar pin mux controller
  pinctrl: qcom: fix 'const' pointer handling
  ...
2018-10-23 08:40:16 +01:00
Christophe JAILLET a93a676b07 pinctrl: sunxi: Fix a memory leak in 'sunxi_pinctrl_build_state()'
If 'krealloc()' fails, 'pctl->functions' is set to NULL.
We should instead use a temp variable in order to be able to free the
previously allocated memeory, in case of OOM.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-16 10:03:48 +02:00
Masahiro Yamada e24cf513cb pinctrl: uniphier: include <linux/bits.h> instead of <linux/bitops.h>
The reason of including <linux/bitops.h> here is just for BIT() macro.

Since commit 8bd9cb51da ("locking/atomics, asm-generic: Move some
macros from <linux/bitops.h> to a new <linux/bits.h> file"),
<linux/bits.h> is enough for such compile-time macros.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-16 10:01:59 +02:00
Andy Shevchenko ce96a3a041 pinctrl: geminilake: Sort register offsets by value
No functional change.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-16 09:18:15 +02:00
Andy Shevchenko 2b3445c7eb pinctrl: geminilake: Get rid of unneeded ->probe() stub
The local ->probe() stub does nothing except calling
a generic Intel pin control probe function. Thus,
it's not needed and generic function may be called directly.

This patch converts the driver accordingly.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-16 09:18:15 +02:00
Andy Shevchenko 08a3e5dca0 pinctrl: geminilake: Update pin list for B0 stepping
According to an updated pin list few names of the pins can be spelled better,
taking into account their primary functions.

Thus, update a pin list to cover B0 stepping.

Note, SPI numbering had been fixed even in A0 public documentation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-16 09:17:18 +02:00
YueHaibing 2b9ea543fa pinctrl: renesas: Fix platform_no_drv_owner.cocci warnings
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-15 16:19:44 +02:00
Manivannan Sadhasivam 28e0603c4d pinctrl: mediatek: Make eint_m u16
For SoC's which lacks EINT support, U16_MAX is assigned to both eint_m
and eint_n through macro NO_EINT_SUPPORT. This will generate integer
overflow warning because eint_m is declared as u8 type. Hence modify
the eint_m type to u16.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-15 16:17:01 +02:00
Rafał Miłecki ce7bdb957b pinctrl: bcm: ns: Use uintptr_t for casting data
Fix up a compiler error on 64bit architectures where pointers
and integers differ in size.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-12 11:14:59 +02:00
Gustavo A. R. Silva 4fe81669df pinctrl: madera: Fix uninitialized variable bug in madera_mux_set_mux
There is a potential execution path in which variable *ret* is checked
in an IF statement, and then its value is used to report an error at
line 659 without being properly initialized previously:

659 if (ret)
660	dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret);

Fix this by initializing variable *ret* to 0 in order to
avoid unpredictable or unintended results.

Addresses-Coverity-ID: 1471969 ("Uninitialized scalar variable")
Fixes: 218d72a77b ("pinctrl: madera: Add driver for Cirrus Logic Madera codecs")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-12 11:14:38 +02:00
Linus Walleij a85c928f6a pinctrl: gemini: Fix up TVC clock group
The previous fix made the TVC clock get muxed in on the
D-Link DIR-685 instead of giving nagging warnings of this
not working. Not good. We didn't want that, as it breaks
video.

Create a specific group for the TVC CLK, and break out
a specific GPIO group for it on the SL3516 so we can use
that line as GPIO if we don't need the TVC CLK.

Fixes: d17f477c5b ("pinctrl: gemini: Mask and set properly")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-10 21:05:35 +02:00
Marco Felsch f259f896f2 pinctrl: mcp23s08: fix irq and irqchip setup order
Since 'commit 02e389e63e ("pinctrl: mcp23s08: fix irq setup order")' the
irq request isn't the last devm_* allocation. Without a deeper look at
the irq and testing this isn't a good solution. Since this driver relies
on the devm mechanism, requesting a interrupt should be the last thing
to avoid memory corruptions during unbinding.

'Commit 02e389e63e ("pinctrl: mcp23s08: fix irq setup order")' fixed the
order for the interrupt-controller use case only. The
mcp23s08_irq_setup() must be split into two to fix it for the
interrupt-controller use case and to register the irq at last. So the
irq will be freed first during unbind.

Cc: stable@vger.kernel.org
Cc: Jan Kundrát <jan.kundrat@cesnet.cz>
Cc: Dmitry Mastykin <mastichi@gmail.com>
Cc: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Fixes: 82039d244f ("pinctrl: mcp23s08: add pinconf support")
Fixes: 02e389e63e ("pinctrl: mcp23s08: fix irq setup order")
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Tested-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-10 14:36:35 +02:00
Linus Walleij dab6558f57 pinctrl: gemini: Drop noisy debug prints
The dev_info() in the pin control driver is really just good
for debug, so drop it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-10 13:55:31 +02:00
Linus Walleij d17f477c5b pinctrl: gemini: Mask and set properly
The code was written under the assumption that the
regmap_update_bits() would mask the bits in the mask and
set the bits in the value.

It missed the points that it will not set bits in the value
unless these are also masked in the mask. Set value bits
that are not in the mask will simply be ignored.

Fixes: 06351d133d ("pinctrl: add a Gemini SoC pin controller")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-10 13:55:04 +02:00
Arnd Bergmann 71a9d395aa pinctrl: mediatek: select GPIOLIB
Removing the linux/gpio.h include means we no longer have a declaration
of gpiochip_lock_as_irq() when CONFIG_GPIOLIB is disabled:

drivers/pinctrl/mediatek/mtk-eint.c: In function 'mtk_eint_irq_request_resources':
drivers/pinctrl/mediatek/mtk-eint.c:247:8: error: implicit declaration of function 'gpiochip_lock_as_irq'; did you mean 'spin_lock_irq'? [-Werror=implicit-function-declaration]
drivers/pinctrl/mediatek/mtk-eint.c: In function 'mtk_eint_irq_release_resources':
drivers/pinctrl/mediatek/mtk-eint.c:272:2: error: implicit declaration of function 'gpiochip_unlock_as_irq'; did you mean 'spin_unlock_irq'? [-Werror=implicit-function-declaration]

Select it explictly instead.

Fixes: 1c5fb66afa ("pinctrl: Include <linux/gpio/driver.h> nothing else")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-10 13:53:21 +02:00
Uwe Kleine-König 5fd8d05191 pinctrl: rza1: don't manually release devm managed resources
If the probe function fails the driver core cares to return the allocated
resources automatically. So the driver can be simplified accordingly.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-10 11:56:21 +02:00
Linus Walleij b0b378acde pinctrl: sh-pfc: Updates for v4.20 (take three)
- Add support for the new RZ/N1D (R9A06G032) and RZ/N1S (R9A06G033)
     SoCs,
   - Add INTC-EX pin groups on R-Car E3.
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Merge tag 'sh-pfc-for-v4.20-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel

pinctrl: sh-pfc: Updates for v4.20 (take three)

  - Add support for the new RZ/N1D (R9A06G032) and RZ/N1S (R9A06G033)
    SoCs,
  - Add INTC-EX pin groups on R-Car E3.
2018-10-10 11:15:33 +02:00
Ricardo Ribalda Delgado 6f0ec09afe pinctrl: msm: Use init_valid_mask exported function
The current code produces XPU violation if get_direction is called just
after the initialization.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Timur Tabi <timur@kernel.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-10 10:31:57 +02:00
Rafał Miłecki c12fb1774d pinctrl: bcm: add Northstar driver
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 <rafal@milecki.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-10 09:16:54 +02:00
Arnd Bergmann c5ad04dd44 pinctrl: qcom: fix 'const' pointer handling
The 'tiles' array is initialized to a constant pointers to constant
strings, but the declaration is only half as constant:

drivers/pinctrl/qcom/pinctrl-qcs404.c:1660:11: error: initialization discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
drivers/pinctrl/qcom/pinctrl-sdm660.c:1417:11: error: initialization discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]

Let's make it more constant.

Fixes: 22eb8301db ("pinctrl: qcom: Add qcs404 pinctrl driver")
Fixes: a46d5e9819 ("pinctrl: qcom: Support dispersed tiles")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-03 09:11:58 +02:00
Linus Walleij 936a3a23be pinctrl: nomadik: Fix debugfs
The .to_irq() function obviously takes the per-chip offset
as parameter, not the global GPIO number.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-03 09:10:52 +02:00
Andy Shevchenko 946ffefcdc pinctrl: intel: Fix a spelling typo in kernel documentation
The parameter 'community' had been spelled incorrectly.
Fix it here.

As a side effect it satisfies static checkers that issue
the following warnings:

drivers/pinctrl/intel/pinctrl-intel.c:845: warning: Function parameter or member 'community' not described in 'intel_gpio_to_pin'
drivers/pinctrl/intel/pinctrl-intel.c:845: warning: Excess function parameter 'commmunity' description in 'intel_gpio_to_pin'

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-03 09:05:35 +02:00
Andy Shevchenko cd057a765f pinctrl: broxton: Convert unsigned to unsigned int
Simple type conversion with no functional change implied.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-03 09:05:32 +02:00
Andy Shevchenko 4e737af8c4 pinctrl: cherryview: Convert unsigned to unsigned int
Simple type conversion with no functional change implied.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-03 09:05:28 +02:00
Andy Shevchenko 939330d71e pinctrl: baytrail: Convert unsigned to unsigned int
Simple type conversion with no functional change implied.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-03 09:05:25 +02:00
Andy Shevchenko 04035f7f59 pinctrl: intel: Convert unsigned to unsigned int
Simple type conversion with no functional change implied.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-03 09:05:21 +02:00
Geert Uytterhoeven ef26d96023 pinctrl: sh-pfc: r8a77990: Add INTC-EX pins, groups and function
Add pins, groups, and function for the Interrupt Controller for
External Devices (INTC-EX) on the R-Car E3 SoC.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2018-10-02 12:16:47 +02:00
Phil Edworthy 4e53b50047 pinctrl: renesas: Renesas RZ/N1 pinctrl driver
This provides a pinctrl driver for the Renesas RZ/N1 device family.

Based on a patch originally written by Michel Pollet at Renesas.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-10-02 12:16:47 +02:00
Stephen Boyd de0c18a87c pinctrl: msm: Actually use function 0 for gpio selection
This code needs to select function #0, which is the first int in the
array of functions, not the number 0 which may or may not be the
function for "GPIO mode" per the enum mapping. We were getting lucky on
SDM845, where this was tested, because the function 0 matched the enum
value for "GPIO mode". On other platforms, e.g. MSM8996, the gpio enum
value is the last one in the list so this code doesn't work and we see a
warning at boot. Fix it by grabbing the first element out of the array
of functions.

Cc: Doug Anderson <dianders@chromium.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Niklas Cassel <niklas.cassel@linaro.org>
Reported-by: Niklas Cassel <niklas.cassel@linaro.org>
Fixes: 1de7ddb3a1 ("pinctrl: msm: Mux out gpio function with gpio_request()")
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-02 10:48:43 +02:00
Yanjiang Jin 54a58185bf pinctrl: core: make sure strcmp() doesn't get a null parameter
Some drivers, for example, QCOM's qdf2xxx, set groups[gpio].name only
when gpio is valid, and leave invalid gpio names as null.
If we want to access the sys node "pinconf-groups",
pinctrl_get_group_selector() -> get_group_name() may return a null
pointer if group_selector is invalid, then the below Kernel panic
would happen since strcmp() uses this null pointer to do comparison.

 Unable to handle kernel NULL pointer dereference at ss 00000000
el:Internal error: Oops: 9600000[ 143.080279]
SMP
 CPU: 19 PID: 2493 Comm: read_all Tainted: G O
.aarch64 #1
 Hardware name: HXT Semiconductor HXT REP-2 System
 PC is at strcmp+0x18/0x154
 LR is at pinctrl_get_group_selector+0x6c/0xe8
 Process read_all (pid: 2493, stack limit =
 Call trace:
 Exception stack
  strcmp+0x18/0x154
  pin_config_group_get+0x64/0xd8
  pinconf_generic_dump_one+0xd8/0x1c0
  pinconf_generic_dump_pins+0x94/0xc8
  pinconf_groups_show+0xb4/0x104
  seq_read+0x178/0x464
  full_proxy_read+0x6c/0xac
  __vfs_read+0x58/0x178
  vfs_read+0x94/0x164
  SyS_read+0x60/0xc0
  __sys_trace_return+0x0/0x4
 --[ end trace]--
 Kernel panic - not syncing: Fatal exception

Signed-off-by: Yanjiang Jin <yanjiang.jin@hxt-semitech.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-01 13:46:13 +02:00
Linus Walleij 18887f31df pinctrl: sh-pfc: Updates for v4.20 (take two)
- Add MSIOF pin groups on R-Car E3 and D3,
   - Add support for the new RZ/G1N (R8A7744) and RZ/G2E (R8A774C0) SoCs,
   - Add I2C4, DU0, QSPI0, SDHI2, and USB pin groups on RZ/G1C,
   - Convert to SPDX license identifiers,
   - Small cleanups.
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Merge tag 'sh-pfc-for-v4.20-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel

pinctrl: sh-pfc: Updates for v4.20 (take two)

  - Add MSIOF pin groups on R-Car E3 and D3,
  - Add support for the new RZ/G1N (R8A7744) and RZ/G2E (R8A774C0) SoCs,
  - Add I2C4, DU0, QSPI0, SDHI2, and USB pin groups on RZ/G1C,
  - Convert to SPDX license identifiers,
  - Small cleanups.
2018-10-01 13:21:58 +02:00
Linus Walleij 30aa69e7bd This is the 4.19-rc6 release
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Merge tag 'v4.19-rc6' into devel

This is the 4.19-rc6 release

I needed to merge this in because of extensive conflicts in
the MSM and Intel pin control drivers. I know how to resolve
them, so let's do it like this.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-10-01 13:20:45 +02:00
Geert Uytterhoeven a97f340c0a pinctrl: sh-pfc: rcar: Rename automotive-only arrays to automotive
Renesas RZ/G SoCs are pin compatible with R-Car SoCs, but lack several
automotive-specific peripherals.

Currently pin groups and functions for automotive-specific peripherals
are grouped in arrays named after the automative SoC part numbers.
Rename them to "automotive" for clarity and consistency.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2018-09-28 09:49:15 +02:00
Baolin Wang 63e037bc51 pinctrl: sprd: Move DT parsing before registering pinctrl device
It will be failed to select default or sleep state for pins hogged
by the pin controller device, since we hadn't parsed pins configuration
in device tree before registering the pin controller device. Thus
we should move the device tree parsing function before registering
the pin controller device.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-28 09:34:19 +02:00
Arnd Bergmann ad335bee6c pinctrl: mediatek: mark dummy helpers as 'static inline'
mtk_eint_set_debounce and mtk_eint_find_irq are defined as stub functions
in a header file, but without marking them as 'static inline', we get
a copy for each file that includes the header:

drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.o: In function `mtk_eint_set_debounce':
pinctrl-mtk-common-v2.c:(.text+0x134): multiple definition of `mtk_eint_set_debounce'
drivers/pinctrl/mediatek/pinctrl-moore.o:pinctrl-moore.c:(.text+0x7d0): first defined here
drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.o: In function `mtk_eint_find_irq':
pinctrl-mtk-common-v2.c:(.text+0x13c): multiple definition of `mtk_eint_find_irq'

Fixes: e46df235b4 ("pinctrl: mediatek: refactor EINT related code for all MediaTek pinctrl can fit")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-28 09:27:04 +02:00
Colin Ian King 7a52127e3c pinctrl: mediatek: fix check on EINT_NA comparison
Currently, the check on desc->eint.eint_n == EINT_NA is always false
because this is comparing a u16 to -1 which can never be true.  Fix
this by casting EINT_NA to u16.

Detected by CoverityScan, CID#1473610 ("Operands don't affect result")

Fixes: fb5fa8dc15 ("pinctrl: mediatek: extend struct mtk_pin_desc to pinctrl-mtk-common-v2.c")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-26 09:43:01 +02:00
Avaneesh Kumar Dwivedi 22eb8301db pinctrl: qcom: Add qcs404 pinctrl driver
Add initial pinctrl driver to support pin configuration with
pinctrl framework for qcs404.

Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
Signed-off-by: Anu Ramanathan <anur@codeaurora.org>
[bjorn: Reworked tile handling and did some minor rework]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-26 09:43:01 +02:00
Bjorn Andersson a46d5e9819 pinctrl: qcom: Support dispersed tiles
On some new platforms the tiles have been placed too far apart to be
covered in a single ioremap. Turn "regs" into an array of base addresses
and make the pingroup carry the information about which tile the pin
resides in.

For existing platforms we map the first entry regs and the existing
pingroups will all use tile 0, meaning that there's no functional
change.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-26 09:30:43 +02:00
Bjorn Andersson 6c73698904 pinctrl: qcom: Introduce readl/writel accessors
In preparation for the support for dispersed tiles move all readl and
writel calls to helper functions. This will allow us to isolate the
added complexity of another indirection.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-26 09:29:59 +02:00
Neeraj Upadhyay 9cf0c526bc pinctrl: qcom: Add sdm660 pinctrl driver
Add initial pinctrl driver to support pin configuration with
pinctrl framework for sdm660.
Based off CAF implementation.

Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Co-Developed-by: Venkatesh Yadav Abbarapu <vabbar@codeaurora.org>
Signed-off-by: Venkatesh Yadav Abbarapu <vabbar@codeaurora.org>
[craig: minor updates for upstreaming, updated tile handling]
Signed-off-by: Craig Tatlor <ctatlor97@gmail.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-26 08:55:53 +02:00
Mika Westerberg 72923e5488 Revert "pinctrl: intel: Do pin translation when lock IRQ"
This reverts commit 55aedef50d.

Commit 55aedef50d ("pinctrl: intel: Do pin translation when lock IRQ")
added special translation from GPIO number to hardware pin number to
irq_reqres/relres hooks to avoid failure when IRQs are requested. The
actual failure happened inside gpiochip_lock_as_irq() because it calls
gpiod_get_direction() and pinctrl-intel.c::intel_gpio_get_direction()
implementation originally missed the translation so the two hooks made
it work by skipping the ->get_direction() call entirely (it overwrote
the default GPIOLIB provided functions).

The proper fix that adds translation to GPIO callbacks was merged with
commit 96147db1e1 ("pinctrl: intel: Do pin translation in other GPIO
operations as well"). This allows us to use the default GPIOLIB provided
functions again.

In addition as find out by Benjamin Tissoires the two functions
(intel_gpio_irq_reqres()/intel_gpio_irq_relres()) now cause problems of
their own because they operate on pin numbers and pass that pin number
to gpiochip_lock_as_irq() which actually expects a GPIO number.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=199911
Fixes: 55aedef50d ("pinctrl: intel: Do pin translation when lock IRQ")
Reported-and-tested-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-25 12:50:00 +02:00
Mika Westerberg e50d95e2ad pinctrl: cannonlake: Fix HOSTSW_OWN register offset of H variant
It turns out the HOSTSW_OWN register offset is different between LP and
H variants. The latter should use 0xc0 instead so fix that.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=199911
Fixes: a663ccf0fe ("pinctrl: intel: Add Intel Cannon Lake PCH-H pin controller support")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-25 12:48:15 +02:00
Andy Shevchenko e99542fb8d pinctrl: intel: merrifield: Group IO accessors in code
Consolidate IO accessors in the code to make maintenance a little bit easier
in the future.

No functional change intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-25 12:45:47 +02:00
Andy Shevchenko 5e0b7e7cd2 pinctrl: intel: merrifield: Introduce mrfld_read_bufcfg()
mrfld_read_bufcfg() helper checks if pin is correct and reads back
the current value of corresponding BUFCFG register.

While it adds lines of code it will be easier to maintain in the future.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-25 12:44:41 +02:00
Daniel Kurtz b85bfa246e pinctrl/amd: poll InterruptEnable bits in amd_gpio_irq_set_type
From the AMD BKDG, if WAKE_INT_MASTER_REG.MaskStsEn is set, a software
write to the debounce registers of *any* gpio will block wake/interrupt
status generation for *all* gpios for a length of time that depends on
WAKE_INT_MASTER_REG.MaskStsLength[11:0].  During this period the Interrupt
Delivery bit (INTERRUPT_ENABLE) will read as 0.

In commit 4c1de0414a ("pinctrl/amd: poll InterruptEnable bits in
enable_irq") we tried to fix this same "gpio Interrupts are blocked
immediately after writing debounce registers" problem, but incorrectly
assumed it only affected the gpio whose debounce was being configured
and not ALL gpios.

To solve this for all gpios, we move the polling loop from
amd_gpio_irq_enable() to amd_gpio_irq_set_type(), while holding the gpio
spinlock.  This ensures that another gpio operation (e.g.
amd_gpio_irq_unmask()) can read a temporarily disabled IRQ and
incorrectly disable it while trying to modify some other register bits.

Fixes: 4c1de0414a pinctrl/amd: poll InterruptEnable bits in enable_irq
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-25 12:39:19 +02:00
YueHaibing a4925311a5 pinctrl: sunxi: fix 'pctrl->functions' allocation in sunxi_pinctrl_build_state
fixes following Smatch static check warning:

 ./drivers/pinctrl/sunxi/pinctrl-sunxi.c:1112 sunxi_pinctrl_build_state()
 warn: passing devm_ allocated variable to kfree. 'pctrl->functions'

As we will be calling krealloc() on pointer 'pctrl->functions', which means
kfree() will be called in there, devm_kzalloc() shouldn't be used with
the allocation in the first place.  Fix the warning by calling kcalloc()
and managing the free procedure in error path on our own.

Fixes: 0e37f88d9a ("ARM: sunxi: Add pinctrl driver for Allwinner SoCs")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-21 09:17:27 -07:00
Mars Cheng bb8d8466ca pinctrl: mediatek: add eint support to MT6765 pinctrl driver
Just add eint support to MT6765 pinctrl driver as usual as
happens on the other SoCs.

Signed-off-by: Mars Cheng <mars.cheng@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-21 09:13:54 -07:00
ZH Chen 477fecee7c pinctrl: mediatek: add MT6765 pinctrl driver
Add MT6765 pinctrl driver based on MediaTek pinctrl-paris core.

Signed-off-by: Mars Cheng <mars.cheng@mediatek.com>
Signed-off-by: ZH Chen <zh.chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-21 09:12:55 -07:00
Mars Cheng ecfcfb4988 pinctrl: mediatek: add no eint function for pin define
Add NO_EINT_SUPPORT back to pinctrl-mtk-common-v2.h as the alias of
EINT_NA to indicate that some pin not capable of being controlled as eint
and that is required by pinctrl-paris based driver as old
pinctrl-mtk-common.h already had.

Signed-off-by: Mars Cheng <mars.cheng@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-09-21 09:12:06 -07:00