Add .get_direction() gpiochip callback in STM32 pinctrl driver.
Signed-off-by: NAlexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

This patch ensures that pin is correctly set as gpio input when it is used
as an interrupt.
Signed-off-by: NAlexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

With "SPI_MASTER=y && I2C=m", we can build mcp23s08 as a built-in driver,
which then results in a link failure:

drivers/pinctrl/built-in.o: In function `mcp23s08_probe_one.isra.0':
:(.text+0x7910): undefined reference to `__devm_regmap_init_i2c'
drivers/pinctrl/built-in.o: In function `mcp23s08_init':
:(.init.text+0x110): undefined reference to `i2c_register_driver'
drivers/pinctrl/built-in.o: In function `mcp23s08_exit':
:(.exit.text+0x3c): undefined reference to `i2c_del_driver'

To avoid the problem, this adds another dependency on I2C that enforces
mcp23s08 to be a loadable module whenever the I2C core is a module.

Fixes: 64ac43e6 ("gpio: mcp23s08: move to pinctrl")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Signed-off-by: NMartin Schiller <ms@dev.tdt.de>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Allwinner R40 has a pin controller like the ones in older Allwinner SoCs
(especially A20), and can use modified version of the A10/A20 pinctrl
driver.

Add a compatible string for it.
Signed-off-by: NIcenowy Zheng <icenowy@aosc.io>
Acked-by: NRob Herring <robh@kernel.org>
Reviewed-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

As we added A20 support to A10 pinctrl driver, now we can delete the
dedicated A20 pinctrl driver, which is duplicated code.
Signed-off-by: NIcenowy Zheng <icenowy@aosc.io>
Reviewed-by: NChen-Yu Tsai <wens@csie.org>
[Drop Makefile entry]
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

As A20 is designed as a pin-compatible upgrade of A10, their pin
controller are very similar, and can share one driver.

Add A20 support to the A10 driver.
Signed-off-by: NIcenowy Zheng <icenowy@aosc.io>
Reviewed-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Allwinner A10, A20 and R40 SoCs have similar GPIO layout.

Add SoC definitions in pinctrl-sunxi.h, in order to merge A20 support
into A10 driver, and add R40 support into it.
Signed-off-by: NIcenowy Zheng <icenowy@aosc.io>
Reviewed-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

There are 2 IP blocks pin routes need to be switched, that are
uart2dbg, pcie_clkreq.
Signed-off-by: NDavid Wu <david.wu@rock-chips.com>
Reviewed-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

There are 8 IP blocks pin routes need to be switched, that are
uart2dbg, gmac-m1-optimized, pdm, spi, i2s2, card, tsp, cif.
Signed-off-by: NDavid Wu <david.wu@rock-chips.com>
Reviewed-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

There are 9 IP blocks pin routes need to be switched, that are
pwm-0, pwm-1, pwm-2, pwm-3, sdio, spi, emmc, uart2, uart1.
Signed-off-by: NDavid Wu <david.wu@rock-chips.com>
Reviewed-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

On the some rockchip SOCS, some things like rk3399 specific uart2 can use
multiple pins. Somewhere between the pin io-cells and the uart it seems
to have some sort of switch to decide to which pin to actually route the
data.

+-------+    +--------+  /- GPIO4_B0 (pinmux 2)

| uart2 | -- | switch | --- GPIO4_C0 (pinmux 2)

+-------+    +--------+  \- GPIO4_C3 (pinmux 2)
(switch selects one of the 3 pins base on the GRF_SOC_CON7[BIT0, BIT1])

The routing switch is determined by one pin of a specific group to be set
to its special pinmux function. If the pinmux setting is wrong for that
pin the ip block won't work correctly anyway.
Signed-off-by: NDavid Wu <david.wu@rock-chips.com>
Reviewed-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Fix compile errors due to missing OF.

Cc: Paul Cercueil <paul@crapouillou.net>
Reported-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The Amlogic Meson GXL SoCs embeds an 10/100 Ethernet PHY, this patchs enables
the Link and Activity LEDs signals.
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: NJerome Brunet <jbrunet@baylibre.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Add the AO and EE domain CEC pins for the Amlogic Meson GXL SoCs.
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: NJerome Brunet <jbrunet@baylibre.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Add the AO and EE domain CEC pins for the Amlogic Meson GXBB SoCs.
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: NJerome Brunet <jbrunet@baylibre.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The AO SPDIF pins were incorrectly defined with the EE pin offset.

Fixes: b840d649 ("pinctrl: meson: gxl: add spdif output pins")
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: NJerome Brunet <jbrunet@baylibre.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The AO I2S pins were incorrectly defined with the EE pin offset.

Fixes: 2899adf0 ("pinctrl: meson: gxl: add i2s output pins")
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: NJerome Brunet <jbrunet@baylibre.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

GPIODV_18 entry was missing in the original driver push.

Fixes: 468c234f ("pinctrl: amlogic: Add support for Amlogic Meson GXBB SoC")
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: NJerome Brunet <jbrunet@baylibre.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

GPIODV_18 entry was missing in the original driver push.

Fixes: 0f15f500 ("pinctrl: meson: Add GXL pinctrl definitions")
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: NJerome Brunet <jbrunet@baylibre.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Fixups here tend to be more of a conglomerate of some of the other
repeated/systematic ones we've seen in the earlier pinctrl cleanups.

We remove module.h from code that isn't doing anything modular at
all;  if they have __init sections, then replace it with init.h

One driver has a .remove that would be dispatched on module_exit,
and as that code is essentially orphaned, so we remove it.  In case
anyone was previously doing the (pointless) unbind to get to that
function, we disable unbind for this one driver as well.

A couple bool drivers (hence non-modular) are converted over to
to builtin_platform_driver().

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.

Cc: Eric Anholt <eric@anholt.net>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jon Mason <jonmason@broadcom.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: Sherman Yin <syin@broadcom.com>
Cc: bcm-kernel-feedback-list@broadcom.com
Cc: linux-gpio@vger.kernel.org
Cc: linux-rpi-kernel@lists.infradead.org
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Tested-by: NStefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

None of the Kconfigs for any of these drivers are tristate,
meaning that they currently are not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the drivers there is no doubt they are builtin-only.  All
drivers get similar changes, so they are handled in batch.

We remove module.h from code that isn't doing anything modular at
all;  if they have __init sections, then replace it with init.h.

A couple drivers have module_exit() code that is essentially orphaned,
and so we remove that.

Quite a few bool drivers (hence non-modular) are converted over to
to builtin_platform_driver().

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Pritesh Raithatha <praithatha@nvidia.com>
Cc: Ashwini Ghuge <aghuge@nvidia.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Use of_device_get_match_data() instead of of_match_device().
It allows us to remove the forward declaration of pcs_of_match.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

There are a couple of issues with group_desc initialization in function
zx_pinctrl_build_state().

 - num_pins is not initialized and remains zero.
 - pins shouldn't be initialized with a pointer to variable in the
   stack.

With them fixed, pin_request() in pinmux_enable_setting() can be invoked
correctly.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The SPICC controller has dedicated SPI pins, this patchs add the pins
definition in the GXBB pinctrl driver
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The SPICC controller has dedicated SPI pins, this patchs add the pins
definition in the GXL pinctrl driver.
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

We use well known standard names for functions that have name, such as
I2C, SPI, SPDIF, etc..

Fix the function name of SPDIF, which was named OWA (One Wire Audio)
based on Allwinner datasheets.

Fixes: 4730f33f ("pinctrl: sunxi: add allwinner A83T PIO controller
		      support")
Signed-off-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

There was no entry for the mvebu pinctrl drivers. As they are tightly
linked to the SoCs and there is a lot of common code to support the
various pinctrl of each SoCs, then add a new entry for the mvebu
maintainers.
Reviewed-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Each text file under Documentation follows a different
format. Some doesn't even have titles!

Change its representation to follow the adopted standard,
using ReST markups for it to be parseable by Sphinx.

This document is almost following the standard stile.

There are only two things to adjust on it:

- promote the level of the document title;
- mark literal blocks as such.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
[Fix some indentations]
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The comment does not match the driver, which actually supports
automatic assignment. Fix this by updating the comment.
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The driver supports using mcp23xxx as interrupt controller, so
let's drop all comments stating otherwise.
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

This moves irq property handling from spi/i2c specific code into
the generic mcp23s08_probe_one. This is possible because the
device properties are named equally.

As a side-effect this drops support for setting the properties via
pdata, which has no mainline users. If boardcode wants to enable
the chip as interrupt controller it can attach the device properties
instead.
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Simplify spi pdata handling, so that it uses pdata when available
and falls back to reading device properties otherwise.
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Simplify i2c pdata handling, so that it uses pdata when available
and falls back to reading device properties otherwise.
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Switching to devm_gpiochip_add_data simplifies the driver's
cleanup routine and safes a few loc.
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Let's remove a few lines of code by using managed memory for mcp
variable.
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

i2c-core and spi-core already assign the irq, so we
can drop the additional call from the mcp driver.
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The driver compiles & works perfectly fine without OF_GPIO on x86,
so lets drop the dependency.
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>