Commit Graph

2895 Commits

Author SHA1 Message Date
Jerome Brunet
6c9dc84357 pinctrl: meson: add interrupts to pinctrl data
Add GPIO interrupt information to pinctrl data. Added to the original
version from Jerome was data for Meson GXL.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-06-09 09:28:20 +02:00
Heiner Kallweit
4c8127cb52 pinctrl: meson-gxbb: remove non-existing pin GPIOX_22
After commit 34e61801a3 "pinctrl: meson-gxbb: Add missing GPIODV_18
pin entry" I started to get the following warning:

"meson-pinctrl c8834000.periphs:pinctrl@4b0: names 119 do not match
number of GPIOs 120"

It turned out that not the mentioned commit has a problem, it just
revealed another problem which had existed before.

There is no PIN GPIOX_22 on Meson GXBB.

Fixes: 468c234f9e ("pinctrl: amlogic: Add support for Amlogic Meson GXBB SoC")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-06-09 09:25:10 +02:00
Linus Walleij
fe5984112e pinctrl: sh-pfc: Updates for v4.13
- Add PWM, AVB MDIO/MII, and sound pin groups on R-Car M3-W,
   - Add support for RZ/G1M and RZ/G1E,
   - Small fixes and cleanups.
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Merge tag 'sh-pfc-for-v4.13-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel

pinctrl: sh-pfc: Updates for v4.13

  - Add PWM, AVB MDIO/MII, and sound pin groups on R-Car M3-W,
  - Add support for RZ/G1M and RZ/G1E,
  - Small fixes and cleanups.
2017-05-31 02:09:43 +02:00
Alexandre TORGUE
acaa037970 pinctrl: stm32: Implement .get_direction gpio_chip callback
Add .get_direction() gpiochip callback in STM32 pinctrl driver.

Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-31 02:05:49 +02:00
Alexandre TORGUE
9efa6d1a1e pinctrl: stm32: set pin to gpio input when used as interrupt
This patch ensures that pin is correctly set as gpio input when it is used
as an interrupt.

Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-31 02:04:41 +02:00
Arnd Bergmann
adeac77549 pinctrl: mcp23s08: improve I2C Kconfig dependency
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: 64ac43e6fa ("gpio: mcp23s08: move to pinctrl")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-31 01:58:36 +02:00
Martin Schiller
4196be5ba0 pinctrl: xway: fix copy/paste error in xrx200_grps
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 18:46:42 +02:00
Icenowy Zheng
56efa62fcf pinctrl: sunxi: drop dedicated A20 driver
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: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
[Drop Makefile entry]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 18:36:52 +02:00
Icenowy Zheng
5d8d349618 pinctrl: sunxi: add A20 support to A10 driver
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: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 18:33:56 +02:00
Icenowy Zheng
88798ba2f1 pinctrl: sunxi: Add SoC ID definitions for A10, A20 and R40 SoCs
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: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 18:31:56 +02:00
David Wu
accc1ce7d2 pinctrl: rockchip: Add iomux-route switching support for rk3399
There are 2 IP blocks pin routes need to be switched, that are
uart2dbg, pcie_clkreq.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 14:28:25 +02:00
David Wu
cedc964a59 pinctrl: rockchip: Add iomux-route switching support for rk3328
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: David Wu <david.wu@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 14:27:18 +02:00
David Wu
d4970ee076 pinctrl: rockchip: Add iomux-route switching support for rk3228
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: David Wu <david.wu@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 14:26:05 +02:00
David Wu
bd35b9bf82 pinctrl: rockchip: Add iomux-route switching support
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: David Wu <david.wu@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 14:24:37 +02:00
Linus Walleij
c504985e3b gpio/pinctrl: ingenic: depend on OF
Fix compile errors due to missing OF.

Cc: Paul Cercueil <paul@crapouillou.net>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 13:41:50 +02:00
Neil Armstrong
82e1e5cd30 pinctrl: meson-gxl: Add Ethernet PHY LEDS pins
The Amlogic Meson GXL SoCs embeds an 10/100 Ethernet PHY, this patchs enables
the Link and Activity LEDs signals.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 11:00:59 +02:00
Neil Armstrong
690dead290 pinctrl: meson-gxl: Add CEC pins
Add the AO and EE domain CEC pins for the Amlogic Meson GXL SoCs.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:59:47 +02:00
Neil Armstrong
dd0ff54dd7 pinctrl: meson-gxbb: Add CEC pins
Add the AO and EE domain CEC pins for the Amlogic Meson GXBB SoCs.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:58:46 +02:00
Neil Armstrong
b11ec68fe1 pinctrl: meson-gxl: Fix typo in AO SPDIF pins
The AO SPDIF pins were incorrectly defined with the EE pin offset.

Fixes: b840d649f9 ("pinctrl: meson: gxl: add spdif output pins")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:57:36 +02:00
Neil Armstrong
13586b31c7 pinctrl: meson-gxl: Fix typo in AO I2S pins
The AO I2S pins were incorrectly defined with the EE pin offset.

Fixes: 2899adf042 ("pinctrl: meson: gxl: add i2s output pins")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:56:33 +02:00
Neil Armstrong
34e61801a3 pinctrl: meson-gxbb: Add missing GPIODV_18 pin entry
GPIODV_18 entry was missing in the original driver push.

Fixes: 468c234f9e ("pinctrl: amlogic: Add support for Amlogic Meson GXBB SoC")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:55:14 +02:00
Neil Armstrong
aa95569566 pinctrl: meson-gxl: Add missing GPIODV_18 pin entry
GPIODV_18 entry was missing in the original driver push.

Fixes: 0f15f500ff ("pinctrl: meson: Add GXL pinctrl definitions")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:54:05 +02:00
Paul Gortmaker
34f4684877 pinctrl: bcm: clean up modular vs. non-modular distinctions
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: Paul Gortmaker <paul.gortmaker@windriver.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:28:14 +02:00
Paul Gortmaker
e3d2160f12 pinctrl: tegra: clean up modular vs. non-modular distinctions
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: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:24:42 +02:00
Masahiro Yamada
1a8764f45c pinctrl: single: use of_device_get_match_data() to get soc data
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: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:18:46 +02:00
Shawn Guo
80fbc2d9b3 pinctrl: zte: fix group_desc initialization
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: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:16:16 +02:00
Neil Armstrong
dcbcc3043c pinctrl: meson-gxbb: Add SPI pins for SPICC controller
The SPICC controller has dedicated SPI pins, this patchs add the pins
definition in the GXBB pinctrl driver

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:14:00 +02:00
Neil Armstrong
477fa24ec0 pinctrl: meson-gxl: Add SPI pins for the SPICC controller
The SPICC controller has dedicated SPI pins, this patchs add the pins
definition in the GXL pinctrl driver.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 10:13:09 +02:00
Chen-Yu Tsai
ffaa364489 pinctrl: sunxi: Fix SPDIF function name for A83T
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: 4730f33f0d ("pinctrl: sunxi: add allwinner A83T PIO controller
		      support")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 11:30:56 +02:00
Linus Walleij
fe421052b3 Merge branch 'mcp23s08' into devel 2017-05-23 09:52:08 +02:00
Sebastian Reichel
d8f4494e70 pinctrl: mcp23s08: drop comment about missing irq support
The driver supports using mcp23xxx as interrupt controller, so
let's drop all comments stating otherwise.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:51:08 +02:00
Sebastian Reichel
ce9bd0a0ff pinctrl: mcp23s08: simplify spi_present_mask handling
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:50:47 +02:00
Sebastian Reichel
5b1a7e803a pinctrl: mcp23s08: generalize irq property handling
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: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:50:13 +02:00
Sebastian Reichel
0d7fcd504c pinctrl: mcp23s08: simplify spi pdata handling
Simplify spi pdata handling, so that it uses pdata when available
and falls back to reading device properties otherwise.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:49:49 +02:00
Sebastian Reichel
5f853acfa9 pinctrl: mcp23s08: simplify i2c pdata handling
Simplify i2c pdata handling, so that it uses pdata when available
and falls back to reading device properties otherwise.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:49:30 +02:00
Sebastian Reichel
d0e49dabc6 pinctrl: mcp23s08: switch to devm_gpiochip_add_data
Switching to devm_gpiochip_add_data simplifies the driver's
cleanup routine and safes a few loc.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:49:06 +02:00
Sebastian Reichel
2f98e78b5a pinctrl: mcp23s08: use managed kzalloc for mcp
Let's remove a few lines of code by using managed memory for mcp
variable.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:48:44 +02:00
Sebastian Reichel
2e29e76772 pinctrl: mcp23s08: irq mapping is already done
i2c-core and spi-core already assign the irq, so we
can drop the additional call from the mcp driver.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:48:15 +02:00
Sebastian Reichel
25ca1cea78 pinctrl: mcp23s08: drop OF_GPIO dependency
The driver compiles & works perfectly fine without OF_GPIO on x86,
so lets drop the dependency.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:47:52 +02:00
Sebastian Reichel
8f38910ba4 pinctrl: mcp23s08: switch to regmap caching
Instead of using custom caching, this switches to regmap based
caching. Before the conversion the debugfs file used uncached
values, so that it was easily possible to see power-loss related
problems. The new code will check and recover at this place.

The patch will also ensure, that irqs are not cleared by checking
register status in debugfs.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:47:28 +02:00
Sebastian Reichel
d795cb51df pinctrl: mcp23s08: drop pullup config from pdata
mcp23s08 support configuration of the pullups using the
pinconf framework. This removes the custom pullup configuration
from platform data, which has no upstream users.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:47:03 +02:00
Sebastian Reichel
82039d244f pinctrl: mcp23s08: add pinconf support
mcp23xxx device have configurable 100k pullup resistors. This adds
support for enabling them using pinctrl's pinconf interface.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:46:32 +02:00
Sebastian Reichel
64ac43e6fa gpio: mcp23s08: move to pinctrl
This moves the mcp23s08 driver from gpio to pinctrl. Actual
pinctrl support for configuration of the pull-up resistors
follows in its own patch.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Acked-by: Sylvain Lemieux <slemieux.tyco@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-23 09:45:29 +02:00
Linus Walleij
bdb18d93a7 Merge branch 'ingenic' into devel 2017-05-22 17:27:18 +02:00
Paul Cercueil
b5c23aa465 pinctrl: add a pinctrl driver for the Ingenic jz47xx SoCs
This driver handles pin configuration and pin muxing for the
JZ4740 and JZ4780 SoCs from Ingenic.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 17:17:23 +02:00
Nikita Yushchenko
7f0ff06c1c pinctrl: When claiming hog, skip maps not served by same device
When pinctrl device registers, it automatically claims hogs, that is,
maps that pinctrl device serves for itself.

It is possible that in addition to SoC's pinctrl device, other pinctrl
devices get registered. E.g. some gpio expander devies are registered
as pinctrl devices. For such devices, pinctrl maps could be defined
that set up SoC's pins (e.g. interrupt pin for gpio expander). Such
a map will have target device set to gpio expander.

Here is device tree snippet that causes this scenario:

&i2c0 {
	sx1503@20 {
		compatible = "semtech,sx1503q";
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_sx1503_20>;
		...
	};
};
...
&iomuxc {
	pinctrl_sx1503_20: pinctrl-sx1503-20 {
		fsl,pins = <
			VF610_PAD_PTB1__GPIO_23         0x219d
		>;
	};
};

Such a map will have target device set to gpio expander. However is not
a hog, it is a regular map that is claimed by core before gpio expander
device is probed.

Thus when looking for hogs, it is not enough to check that map's target
device is set to pinctrl device being registered. Need also check that
map's control device is also set to the same.

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 17:05:44 +02:00
Dong Aisheng
5586ee4191 pinctrl: imx: add soc specific mux_mode mask and shift property
MX7ULP MUX mode mask and shift bit is different from VF610.
Let's make it a platform specific property for the later easy of
adding MX7ULP support.

One trick in exist code that Vybrid hardcoded the config part
as 0xffff because its mux_config register BIT[15-0] are all configs
part. But it's not true in ULP, so use mux_mask instead to address
the difference.

Cc: Stefan Agner <stefan@agner.ch>
Cc: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 11:05:19 +02:00
Dong Aisheng
a5cadbbb08 pinctrl: imx: add generic pin config core support
The design is based on the exist architecture that the core will
provide a uniformed way to decode the generic pin config into platform
config register raw data according to the imx_cfg_params_decode maps
registered by platform.

Two useful macros, IMX_CFG_PARAMS_DECODE and IMX_CFG_PARAMS_DECODE_INVERT,
are created for platform to register decode map conveniently.

In order to cope with some special case, a platform specific fixup()
function is also available to use.

Note that rather than fully utilizing the generic pinconf support
provided by pinctrl core, IMX only adopts the device tree bindings
of generic pinconf. The config used in .pin_config_get[set] are raw
register data instead of generic one which makes us align the exist
using. And that's also why we cannot set pinconf_ops.is_generic.

Cc: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 11:03:47 +02:00
Dong Aisheng
66b54e3a5a pinctrl: imx: fix debug message for SHARE_MUX_CONF_REG case
The original implemented debug message does not work for
SHARE_MUX_CONF_REG case. This patch fixes it.

Fixes: bf5a530971 ("pinctrl: imx: add VF610 support to imx pinctrl framework")
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 11:01:51 +02:00
Christophe JAILLET
49af64e6b5 pinctrl: imx: Check for memory allocation failure
If 'devm_kzalloc' fails, a NULL pointer will be dereferenced.
Return -ENOMEM instead, as done for the other memory allocation just a
few lines below.
BTW, change the 'devm_kzalloc' into a 'devm_kcalloc'.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-22 10:39:25 +02:00