GitHub/moto-9609/android_kernel_motorola_exynos9610.git
8 years agopinctrl: uniphier: add Ethernet pin-mux settings
Masahiro Yamada [Wed, 6 Jul 2016 15:12:11 +0000 (00:12 +0900)]
pinctrl: uniphier: add Ethernet pin-mux settings

Add the following Ethernet interfaces:

  PH1-LD4: MII, RMII
  PH1-Pro4: MII, RMII, RGMII
  PH1-sLD8: MII, RMII (Built-in PHY is also supported)
  ProXstream2: MII, RMII, RGMII
  PH1-LD6b: RMII, RGMII
  PH1-LD11: RMII (Built-in PHY is also supported)
  PH1-LD20: RMII, RGMII

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agosh-pfc: Use PTR_ERR_OR_ZERO() to simplify the code
Wei Yongjun [Wed, 6 Jul 2016 12:03:32 +0000 (12:03 +0000)]
sh-pfc: Use PTR_ERR_OR_ZERO() to simplify the code

Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: ns2: fix return value check in ns2_pinmux_probe()
Wei Yongjun [Wed, 6 Jul 2016 12:17:41 +0000 (12:17 +0000)]
pinctrl: ns2: fix return value check in ns2_pinmux_probe()

In case of error, the function pinctrl_register() returns
NULL not ERR_PTR(). The IS_ERR() test in the return value
check should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: qcom: update DT bindings with ebi2 groups
Linus Walleij [Fri, 8 Jul 2016 17:39:03 +0000 (19:39 +0200)]
pinctrl: qcom: update DT bindings with ebi2 groups

This adds the ebi2 and ebi2cs groups to the MSM8660 pin control
documentation document.

Cc: devicetree@vger.kernel.org
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Björn Andersson <bjorn.andersson@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: qcom: establish proper EBI2 pin groups
Linus Walleij [Thu, 7 Jul 2016 23:05:49 +0000 (01:05 +0200)]
pinctrl: qcom: establish proper EBI2 pin groups

After some digging around I found documentation (!) of the APQ8060
EBI2 pin groups. It turns out I first need to split the group in
two: ebi2cs and ebi2 proper. The chip select pins are kind of
orthogonal to the other EBI2 pins since CS1B and CS2B can be muxed
over address bits 7 and 6 (don't know why, but they can). This
is good to fix up before we add users.

Also found what the "holes" in the assignment all the way up to
gpio158 was actually for.

All mux documentation comes from "Snapdragon(TM) S3 APQ8060-based
DragonBoard(TM) GPIO User Guide Rev. E August 10, 2012", published
by Bsquare Corporation.

As the documentation seems a bit hard to come by I put some comments
in the group definitions so that it is clear to all readers what
is going on here and what the lines are used for.

Cc: Björn Andersson <bjorn.andersson@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx21: Remove the MODULE_DEVICE_TABLE() macro
Fabio Estevam [Wed, 6 Jul 2016 13:25:17 +0000 (10:25 -0300)]
pinctrl: imx21: Remove the MODULE_DEVICE_TABLE() macro

Commit e2756baa4217 ("pinctrl: imx21: make it explicitly non-modular")
missed the removal of the MODULE_DEVICE_TABLE() macro causing the
following build error:

drivers/pinctrl/freescale/pinctrl-imx21.c:328:1: error: data definition has no type or storage class [-Werror]
 MODULE_DEVICE_TABLE(of, imx21_pinctrl_of_match);

,so remove the macro to fix this problem.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agoDocumentation: dt: Add new compatible to STM32 pinctrl driver bindings
Alexandre TORGUE [Tue, 5 Jul 2016 13:40:17 +0000 (15:40 +0200)]
Documentation: dt: Add new compatible to STM32 pinctrl driver bindings

Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agoincludes: dt-bindings: Add STM32F746 pinctrl DT bindings
Alexandre TORGUE [Tue, 5 Jul 2016 13:40:15 +0000 (15:40 +0200)]
includes: dt-bindings: Add STM32F746 pinctrl DT bindings

Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: sunxi: fix nand0 function name for sun8i
Icenowy Zheng [Mon, 4 Jul 2016 02:29:31 +0000 (10:29 +0800)]
pinctrl: sunxi: fix nand0 function name for sun8i

In sun4/5/6/7i, all the pin function related to NAND0 controller is
named "nand0". However, in sun8i, some of the functions are named as
"nand". This patch renamed them to "nand0", for the consistency.

Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: remove pointless pin-mux settings for PH1-LD11
Masahiro Yamada [Wed, 29 Jun 2016 08:57:13 +0000 (17:57 +0900)]
pinctrl: uniphier: remove pointless pin-mux settings for PH1-LD11

This SoC has no SD card controller.  Nor does it have USB port3.
These pin-mux settings have no point.

Fixes: 70f2f9c4cf25 ("pinctrl: uniphier: add UniPhier PH1-LD11 pinctrl driver")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: qcom: add support for EBI2
Linus Walleij [Thu, 9 Jun 2016 13:14:31 +0000 (15:14 +0200)]
pinctrl: qcom: add support for EBI2

Add support to mux in the second external bus interface as
follows:

- CS1 and CS2 on GPIO39 and GPIO40 as func 2
- ADDR_7 thru ADDR_0 on GPIO123 thru GPIO130 as func 1
- CS4, CS3 and CS0 on GPIO132, GPIO133, GPIO134 as func 1
- DATA_15 thru DATA_0 on GPIO135 thru GPIO150 as func 1
- OE on GPIO151 as func 1
- ADV on GPIO153 as func 1
- WE on GPIO157 as func 1

This external bus is used on the APQ8060 Dragonboard to connect
an external SMSC9211 ethernet adapter, but there are many other
usecases for the EBI2.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Björn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: qcom: msm8974: Add hsic_ctl pinmux
Stephen Boyd [Sun, 26 Jun 2016 05:21:32 +0000 (22:21 -0700)]
pinctrl: qcom: msm8974: Add hsic_ctl pinmux

The msm8974 pinctrl variant has a couple USB HSIC "glue"
registers that let us mux between the pinctrl register settings
or the HSIC core settings for the HSIC pins (gpio 144 and gpio
145). Support this method of operation by adding hsic_data and
hsic_strobe pins that can select between hsic_ctl and gpio
functions. This allows us to toggle the hsic pin configuration
over to the HSIC core at runtime.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: qcom: Clear all function selection bits
Stephen Boyd [Sun, 26 Jun 2016 05:21:31 +0000 (22:21 -0700)]
pinctrl: qcom: Clear all function selection bits

The function selection bitfield is not always 3 bits wide.
Sometimes it is 4 bits wide. Let's use the npins struct member to
determine how many bits wide the function selection bitfield is
so we clear the correct amount of bits in the register while
remuxing the pins.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agodt-bindings: pinctrl: Add MDM9615 TLMM bindings
Neil Armstrong [Fri, 17 Jun 2016 10:15:35 +0000 (12:15 +0200)]
dt-bindings: pinctrl: Add MDM9615 TLMM bindings

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Björn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: qcom: Add support for MDM9615 TLMM
Neil Armstrong [Fri, 17 Jun 2016 10:15:34 +0000 (12:15 +0200)]
pinctrl: qcom: Add support for MDM9615 TLMM

In order to support the Qualcomm MDM9615 SoC, add support for the TLMM
using the Qualcomm pinctrl generic driver.

Note: the pinctrl is partial, need Documentation to complete all the groups.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: sirf: atlas7: Add missing of_node_put
Amitoj Kaur Chawla [Fri, 24 Jun 2016 13:06:30 +0000 (18:36 +0530)]
pinctrl: sirf: atlas7: Add missing of_node_put

of_find_node_by_name does an of_node_get on its return value,
so an of_node_put is needed on this value before the corresponding
variable goes out of scope.

The Coccinelle semantic patch used to make this change is as follows:
@@
struct device_node *n;
struct device_node *n1;
statement S;
identifier f;
expression E;
constant C;
@@

n = of_find_node_by_name(...)
...
if (!n) S
... when != of_node_put(n)
    when != n1 = f(n,...)
    when != E = n
    when any
    when strict
(
+ of_node_put(n);
  return -C;
|
  of_node_put(n);
|
  n1 = f(n,...)
|
  E = n
|
  return ...;
)

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: nsp: add pinmux driver support for Broadcom NSP SoC
Yendapally Reddy Dhananjaya Reddy [Thu, 23 Jun 2016 17:35:07 +0000 (13:35 -0400)]
pinctrl: nsp: add pinmux driver support for Broadcom NSP SoC

This adds the initial support of the Broadcom NSP pinmux driver.

Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
Reviewed-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: Broadcom NSP pinctrl device tree bindings
Yendapally Reddy Dhananjaya Reddy [Thu, 23 Jun 2016 17:35:06 +0000 (13:35 -0400)]
pinctrl: Broadcom NSP pinctrl device tree bindings

Device tree binding documentation for Broadcom NSP IOMUX driver

Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agoMerge tag 'sh-pfc-for-v4.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Walleij [Wed, 29 Jun 2016 08:02:06 +0000 (10:02 +0200)]
Merge tag 'sh-pfc-for-v4.8-tag1' of git://git./linux/kernel/git/geert/renesas-drivers into devel

pinctrl: sh-pfc: Updates for v4.8

  - Voltage switching support for R-Car H3,
  - DRIF pin support for R-Car H3,
  - Cleanups and fixes.

8 years agopinctrl: intel: Add Intel Merrifield pin controller support
Andy Shevchenko [Thu, 23 Jun 2016 10:49:36 +0000 (13:49 +0300)]
pinctrl: intel: Add Intel Merrifield pin controller support

This driver adds pinctrl support for Intel Merrifield. The IP block which is
called Family-Level Interface Shim is a separate entity in SoC. The GPIO driver
(gpio-intel-mid.c) will be updated accordingly to support pinctrl interface.

Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: remove orphaned exported ".remove" function
Paul Gortmaker [Sun, 26 Jun 2016 02:46:52 +0000 (22:46 -0400)]
pinctrl: remove orphaned exported ".remove" function

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_MXS
drivers/pinctrl/freescale/Kconfig: bool

...meaning that it currently is not being built as a module by anyone.

It also doesn't have any modular functionality, so it doesn't need
module.h included at all.

What it does have is an exported function that was used as a shared
".remove" by other drivers, but those use cases (imx23 and imx28)
are now gone, and hence this can disappear as well.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx28: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:51 +0000 (22:46 -0400)]
pinctrl: imx28: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX28
drivers/pinctrl/freescale/Kconfig: bool

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

Since module_init was not in use by this 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: Shawn Guo <shawn.guo@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx23: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:50 +0000 (22:46 -0400)]
pinctrl: imx23: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX23
drivers/pinctrl/freescale/Kconfig: bool

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

Since module_init wasn't actually used by this 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: Shawn Guo <shawn.guo@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: vf610: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:49 +0000 (22:46 -0400)]
pinctrl: vf610: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_VF610
drivers/pinctrl/freescale/Kconfig: bool "Freescale Vybrid VF610 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init wasn't in use by this driver, the init ordering
remains unchanged with this commit.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx7d: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:48 +0000 (22:46 -0400)]
pinctrl: imx7d: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX7D
drivers/pinctrl/freescale/Kconfig: bool "IMX7D pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this driver, the init ordering
remains unchanged with this commit.

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: Anson Huang <Anson.Huang@freescale.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx6ul: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:47 +0000 (22:46 -0400)]
pinctrl: imx6ul: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX6UL
drivers/pinctrl/freescale/Kconfig: bool "IMX6UL pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this driver, the init ordering
remains unchanged with this commit.

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: Anson Huang <Anson.Huang@freescale.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx6sx: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:46 +0000 (22:46 -0400)]
pinctrl: imx6sx: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX6SX
drivers/pinctrl/freescale/Kconfig: bool "IMX6SX pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this driver, the init ordering
remains unchanged with this commit.

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: Anson Huang <Anson.Huang@freescale.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx6sl: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:45 +0000 (22:46 -0400)]
pinctrl: imx6sl: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX6SL
drivers/pinctrl/freescale/Kconfig: bool "IMX6SL pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this 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: Shawn Guo <shawn.guo@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx6q: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:44 +0000 (22:46 -0400)]
pinctrl: imx6q: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX6Q
drivers/pinctrl/freescale/Kconfig: bool "IMX6Q/DL pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.

We don't replace module.h with init.h since the file already has that.
But we do add export.h since this file uses the global THIS_MODULE.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Dong Aisheng <dong.aisheng@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx6dl: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:43 +0000 (22:46 -0400)]
pinctrl: imx6dl: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX6Q
drivers/pinctrl/freescale/Kconfig: bool "IMX6Q/DL pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this driver, the init ordering
remains unchanged with this commit.

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: Shawn Guo <shawn.guo@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx53: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:42 +0000 (22:46 -0400)]
pinctrl: imx53: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX53
drivers/pinctrl/freescale/Kconfig: bool "IMX53 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this driver, the init ordering
remains unchanged with this commit.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Dong Aisheng <dong.aisheng@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx51: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:41 +0000 (22:46 -0400)]
pinctrl: imx51: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX51
drivers/pinctrl/freescale/Kconfig: bool "IMX51 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this driver, the init ordering
remains unchanged with this commit.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Dong Aisheng <dong.aisheng@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx50: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:40 +0000 (22:46 -0400)]
pinctrl: imx50: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX50
drivers/pinctrl/freescale/Kconfig: bool "IMX50 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this driver, the init ordering
remains unchanged with this commit.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx35: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:39 +0000 (22:46 -0400)]
pinctrl: imx35: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX35
drivers/pinctrl/freescale/Kconfig: bool "IMX35 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this driver, the init ordering
remains unchanged with this commit.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Dong Aisheng <dong.aisheng@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx27: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:38 +0000 (22:46 -0400)]
pinctrl: imx27: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX27
drivers/pinctrl/freescale/Kconfig: bool "IMX27 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this driver, the init ordering
remains unchanged with this commit.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Markus Pargmann <mpa@pengutronix.de>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx25: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:37 +0000 (22:46 -0400)]
pinctrl: imx25: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX25
drivers/pinctrl/freescale/Kconfig:        bool "IMX25 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not in use by this driver, the init ordering
remains unchanged with this commit.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Denis Carikli <denis@eukrea.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx21: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:36 +0000 (22:46 -0400)]
pinctrl: imx21: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX21
drivers/pinctrl/freescale/Kconfig: bool "i.MX21 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

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

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexander Shiyan <shc_work@mail.ru>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: imx1: make it explicitly non-modular
Paul Gortmaker [Sun, 26 Jun 2016 02:46:35 +0000 (22:46 -0400)]
pinctrl: imx1: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/freescale/Kconfig:config PINCTRL_IMX1
drivers/pinctrl/freescale/Kconfig: bool "IMX1 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

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
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexander Shiyan <shc_work@mail.ru>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: freescale: remove needless module.h include
Paul Gortmaker [Sun, 26 Jun 2016 02:46:34 +0000 (22:46 -0400)]
pinctrl: freescale: remove needless module.h include

None of these files have anything modular in them, so they
don't need to be bringing in module.h and all its dependencies.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agoMerge branch 'devel-dt-free-map' into devel
Linus Walleij [Thu, 23 Jun 2016 09:19:14 +0000 (11:19 +0200)]
Merge branch 'devel-dt-free-map' into devel

8 years agopinctrl: pinconf: Add generic helper function for freeing mappings
Jon Hunter [Fri, 17 Jun 2016 12:03:40 +0000 (13:03 +0100)]
pinctrl: pinconf: Add generic helper function for freeing mappings

The pinconf-generic.h file exposes functions for creating generic mappings
but it does not expose a function for freeing the mappings. Add a function
for freeing generic mappings.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: sh-pfc: r8a7795: Add DRIF support
Ramesh Shanmugasundaram [Thu, 23 Jun 2016 08:11:50 +0000 (09:11 +0100)]
pinctrl: sh-pfc: r8a7795: Add DRIF support

This patch adds DRIF[0-3] pinmux support for r8a7795 SoC.

Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agopinctrl: sh-pfc: r8a7795: Use PINMUX_SINGLE() for I2C
Kuninori Morimoto [Tue, 21 Jun 2016 02:46:55 +0000 (02:46 +0000)]
pinctrl: sh-pfc: r8a7795: Use PINMUX_SINGLE() for I2C

Now we have PINMUX_SINGLE(). Let's use it instead of PINMUX_IPSR_NOGP()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agopinctrl: Flag strict is a field in struct pinmux_ops
Andy Shevchenko [Mon, 20 Jun 2016 22:40:48 +0000 (01:40 +0300)]
pinctrl: Flag strict is a field in struct pinmux_ops

Documentation incorrectly refers to struct pinctrl_desc, where no such flag is
available. Replace the name of the struct.

Fixes: commit 8c4c2016345f ("pinctrl: move strict option to pinmux_ops")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: rockchip: make rockchip_irq_gc_mask_set_bit static
Ben Dooks [Tue, 21 Jun 2016 17:38:21 +0000 (18:38 +0100)]
pinctrl: rockchip: make rockchip_irq_gc_mask_set_bit static

The rockchip_irq_gc_mask_set_bit() function is not exported our used
outside of ppinctrl-rockchip.c so fix the following sparse error by
making it static:

drivers/pinctrl/pinctrl-rockchip.c:2010:6: warning:
  symbol 'rockchip_irq_gc_mask_set_bit' was not declared.
  Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agoRevert "pinctrl: digicolor: add missing platform_set_drvdata() call"
Baruch Siach [Sat, 18 Jun 2016 20:01:06 +0000 (23:01 +0300)]
Revert "pinctrl: digicolor: add missing platform_set_drvdata() call"

This reverts commit 8b2b3dcb343bf8cb62efc1bd6a9dbe850005e2ac.

Commit 546c6d79301 (pinctrl: digicolor: make it explicitly non-modular) removed
the platform_get_drvdata() call, so platform_set_drvdata() is no longer needed.

Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: as3722: convert PINCTRL_AS3722 from bool to tristate
Paul Gortmaker [Mon, 13 Jun 2016 21:10:22 +0000 (17:10 -0400)]
pinctrl: as3722: convert PINCTRL_AS3722 from bool to tristate

The Kconfig currently controlling compilation of this code is:

config PINCTRL_AS3722
        bool "Pinctrl and GPIO driver for ams AS3722 PMIC"

...meaning that it currently is not being built as a module by anyone.

During an audit for non-modular drivers using modular infrastructure
this driver showed up.

But rather than demodularize it, Laxman indicated that it would be
prefereable to instead convert the driver option to tristate.

This does that, and confirms that it will compile and modpost as
such.  However, since I do not have the hardware to confirm that
no new runtime issues exist when modular, that remains untested.

Cc: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: palmas: convert PINCTRL_PALMAS from bool to tristate
Paul Gortmaker [Mon, 13 Jun 2016 21:10:21 +0000 (17:10 -0400)]
pinctrl: palmas: convert PINCTRL_PALMAS from bool to tristate

The Kconfig currently controlling compilation of this code is:

config PINCTRL_PALMAS
        bool "Pinctrl driver for the PALMAS Series MFD devices"

...meaning that it currently is not being built as a module by anyone.

During an audit for non-modular drivers using modular infrastructure
this driver showed up.

But rather than demodularize it, Laxman indicated that it would be
prefereable to instead convert the driver option to tristate.

This does that, and confirms that it will compile and modpost as
such.  However, since I do not have the hardware to confirm that
no new runtime issues exist when modular, that remains untested.

Cc: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: sh-pfc: Convert to devm_gpiochip_add_data()
Geert Uytterhoeven [Fri, 10 Jun 2016 09:22:44 +0000 (11:22 +0200)]
pinctrl: sh-pfc: Convert to devm_gpiochip_add_data()

This allows to remove the .remove() callback, and all functions and data
it needed for its own bookkeeping.

Suggested-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: sh-pfc: Improve core and user API separation
Geert Uytterhoeven [Fri, 10 Jun 2016 09:02:55 +0000 (11:02 +0200)]
pinctrl: sh-pfc: Improve core and user API separation

The Renesas Pin Function Controller uses two header files:
  - sh_pfc.h, for use by both core code and SoC-specific drivers,
  - core.h, for internal use by the core code only.

Several SoC-specific drivers include core.h, as they need the sh_pfc
structure, which is passed explicitly to the various SoC-specific
callbacks, and used there.

Hence move its definition from core.h to sh_pfc.h, and remove the
inclusion of core.h from all SoC-specific files.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: sh-pfc: Move SoC-specific forward declarations to sh_pfc.h
Geert Uytterhoeven [Fri, 10 Jun 2016 08:49:36 +0000 (10:49 +0200)]
pinctrl: sh-pfc: Move SoC-specific forward declarations to sh_pfc.h

With C=1:

    drivers/pinctrl/sh-pfc/pfc-emev2.c:1695:30: warning: symbol 'emev2_pinmux_info' was not declared. Should it be static?
    drivers/pinctrl/sh-pfc/pfc-r8a7779.c:3888:30: warning: symbol 'r8a7779_pinmux_info' was not declared. Should it be static?

Note that there are more warnings on SH.

The sh_pfc_soc_info structure is defined in sh_pfc.h, while all forward
declarations for the SoC-specific versions are in core.h.
Move the forward declarations from core.h to sh_pfc.h to fix this.

Reported-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: OF: Don't create a pinctrl handle if no pinctrl entries exist
Jon Hunter [Thu, 16 Jun 2016 15:27:41 +0000 (16:27 +0100)]
pinctrl: OF: Don't create a pinctrl handle if no pinctrl entries exist

When pinctrl_get() is called for a device, it will return a valid handle
even if the device itself has no pinctrl state entries defined in
device-tree. This is caused by the function pinctrl_dt_to_map() which
will return success even if the first pinctrl state, 'pinctrl-0', is not
found in the device-tree node for a device.

According to the pinctrl device-tree binding documentation, pinctrl
states must be numbered starting from 0 and so 'pinctrl-0' should always
be present if a device uses pinctrl and therefore, if 'pinctrl-0' is not
present it seems valid that we should not return a valid pinctrl handle.

Fix this by returning an error code if the property 'pinctrl-0' is not
present for a device.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: intel: Prevent force threading of the interrupt handler
Mika Westerberg [Thu, 16 Jun 2016 08:25:37 +0000 (11:25 +0300)]
pinctrl: intel: Prevent force threading of the interrupt handler

The pinctrl-intel needs to use request_irq() instead of chained interrupt
handling because it shares the interrupt with multiple GPIO host
controllers found on Intel CPUs. In -rt all such interrupts are forced to
run in thread context which triggers following warning:

 WARNING: CPU: 0 PID: 530 at kernel/irq/handle.c:151 handle_irq_event_percpu+0x23d/0x240
 irq 348 handler irq_default_primary_handler+0x0/0x10 enabled interrupts
 Modules linked in:
 CPU: 0 PID: 530 Comm: irq/14-INT3452: Not tainted 4.6.2-rt5 #1060
  0000000000000000 ffff88007a257c98 ffffffff812d8494 ffff88007a257ce8
  0000000000000000 ffff88007a257cd8 ffffffff8105e554 000000977a257d90
  ffff88007a37a380 000000000000015c 0000000000000002 0000000000000000
 Call Trace:
  [<ffffffff812d8494>] dump_stack+0x4f/0x6b
  [<ffffffff8105e554>] __warn+0xe4/0x100
  [<ffffffff8105e5bf>] warn_slowpath_fmt+0x4f/0x60
  [<ffffffff810b18f0>] ? __synchronize_hardirq+0x60/0x60
  [<ffffffff810b17fd>] handle_irq_event_percpu+0x23d/0x240
  [<ffffffff810b1862>] handle_irq_event+0x62/0x90
  [<ffffffff810b4e1f>] handle_edge_irq+0x8f/0x190
  [<ffffffff810b0d82>] generic_handle_irq+0x22/0x30
  [<ffffffff81307abc>] intel_gpio_irq+0xdc/0x150
  [<ffffffff810b2293>] irq_forced_thread_fn+0x23/0x70
  [<ffffffff810b250b>] irq_thread+0x13b/0x1d0
  [<ffffffff8167b844>] ? __schedule+0x2e4/0x5a0
  [<ffffffff810b2270>] ? irq_finalize_oneshot.part.37+0xd0/0xd0
  [<ffffffff810b25a0>] ? irq_thread+0x1d0/0x1d0
  [<ffffffff810b23d0>] ? wake_threads_waitq+0x30/0x30
  [<ffffffff8107e624>] kthread+0xd4/0xf0
  [<ffffffff8167ec27>] ? _raw_spin_unlock_irq+0x17/0x40
  [<ffffffff8167f592>] ret_from_fork+0x22/0x40
  [<ffffffff8107e550>] ? kthread_worker_fn+0x190/0x190

The handle_irq_event_* functions (and I suppose generic_handle_irq()) is
expected to be called with interrupts disabled and they rightfully complain
here because we run in thread context with interrupts enabled.

Fix this by adding IRQF_NO_THREAD flag when the master interrupt is
requested. This prevents forced threading of the interrupt used by the GPIO
host controllers.

Reported-by: Kim Tatt Chuah <kim.tatt.chuah@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: intel: Use raw_spinlock for locking
Mika Westerberg [Thu, 16 Jun 2016 08:25:36 +0000 (11:25 +0300)]
pinctrl: intel: Use raw_spinlock for locking

When running -rt kernel and GPIO interrupt happens we get following

 BUG: sleeping function called from invalid context at kernel/locking/rtmutex.c:931
 in_atomic(): 1, irqs_disabled(): 0, pid: 530, name: irq/14-INT3452:
 Preemption disabled at:[<ffffffff810b4dab>] handle_edge_irq+0x1b/0x190

 CPU: 0 PID: 530 Comm: irq/14-INT3452: Not tainted 4.6.2-rt5 #1060
  0000000000000000 ffff88007a257d58 ffffffff812d8494 0000000000000000
  ffff88017a330000 ffff88007a257d78 ffffffff81083a11 ffff88007a252430
  ffff88007a252430 ffff88007a257d90 ffffffff8167ef20 000000000000001a
 Call Trace:
  [<ffffffff812d8494>] dump_stack+0x4f/0x6b
  [<ffffffff81083a11>] ___might_sleep+0xe1/0x160
  [<ffffffff8167ef20>] rt_spin_lock+0x20/0x50
  [<ffffffff81308c6d>] intel_gpio_irq_ack+0x2d/0x80
  [<ffffffff810b4e0b>] handle_edge_irq+0x7b/0x190
  [<ffffffff810b0d82>] generic_handle_irq+0x22/0x30
  [<ffffffff81307abc>] intel_gpio_irq+0xdc/0x150
  [<ffffffff810b2293>] irq_forced_thread_fn+0x23/0x70
  [<ffffffff810b250b>] irq_thread+0x13b/0x1d0
  [<ffffffff8167b844>] ? __schedule+0x2e4/0x5a0
  [<ffffffff810b2270>] ? irq_finalize_oneshot.part.37+0xd0/0xd0
  [<ffffffff810b25a0>] ? irq_thread+0x1d0/0x1d0
  [<ffffffff810b23d0>] ? wake_threads_waitq+0x30/0x30
  [<ffffffff8107e624>] kthread+0xd4/0xf0
  [<ffffffff8167ec27>] ? _raw_spin_unlock_irq+0x17/0x40
  [<ffffffff8167f592>] ret_from_fork+0x22/0x40
  [<ffffffff8107e550>] ? kthread_worker_fn+0x190/0x190

The reason why this happens is because intel_gpio_irq_ack() is called with
desc->lock raw_spinlock locked which cannot sleep but our normal spinlock
(which is converted to rtmutex in -rt) is allowed to sleep. This causes
might_sleep() to trigger.

Fix this by converting the normal spinlock to a raw_spinlock.

Reported-by: Kim Tatt Chuah <kim.tatt.chuah@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: fix meaningless drive control offsets
Masahiro Yamada [Wed, 15 Jun 2016 08:18:06 +0000 (17:18 +0900)]
pinctrl: uniphier: fix meaningless drive control offsets

These are input-only pins.  They do not support drive controlling
in the first place.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: prohibit drive control for pin 61-66 of PH1-LD11
Masahiro Yamada [Wed, 15 Jun 2016 08:18:05 +0000 (17:18 +0900)]
pinctrl: uniphier: prohibit drive control for pin 61-66 of PH1-LD11

According to the hardware document, setting the drive control is
prohibited for these pins (N-channel Open Drain pins).  Set their
drive control attribute to "fixed".

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl/broxton: enable platform device in the absence of ACPI enumeration
Tan Jui Nee [Tue, 7 Jun 2016 06:55:51 +0000 (14:55 +0800)]
pinctrl/broxton: enable platform device in the absence of ACPI enumeration

This is to cater the need for non-ACPI system whereby
a platform device has to be created in order to bind
with the Apollo Lake Pinctrl GPIO platform driver.

Signed-off-by: Tan Jui Nee <jui.nee.tan@intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: max77620: select PINMUX
Arnd Bergmann [Mon, 13 Jun 2016 15:18:35 +0000 (17:18 +0200)]
pinctrl: max77620: select PINMUX

The recently added max77620 driver fails to build when CONFIG_PINMUX
is not set:

pinctrl/pinctrl-max77620.c:272:21: error: variable 'max77620_pinmux_ops' has initializer but incomplete type
 static const struct pinmux_ops max77620_pinmux_ops = {
                     ^~~~~~~~~~
pinctrl/pinctrl-max77620.c:273:2: error: unknown field 'get_functions_count' specified in initializer

This adds the Kconfig 'select' statement that was clearly meant
to be there and is used in all other pinmux drivers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: fix incorrect inline keyword in multiple drivers
Arnd Bergmann [Mon, 13 Jun 2016 15:18:34 +0000 (17:18 +0200)]
pinctrl: fix incorrect inline keyword in multiple drivers

When building with 'make W=1', we get harmless warnings about
five drivers in drivers/pinctrl, which all contain a copy of
the same line:

drivers/pinctrl/freescale/pinctrl-imx1-core.c:160:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration]

This replaces the somewhat nonstandard 'static const inline'
with 'static inline const', which has the same meaning but
does not cause this warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: max77620: Remove unused structure definition
Jon Hunter [Mon, 13 Jun 2016 12:51:44 +0000 (13:51 +0100)]
pinctrl: max77620: Remove unused structure definition

The strucuture 'max77620_cfg_param' is defined but never used by the
max77620 driver. Remove this structure definition.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: cherryview: add handlers for pin_config_group_get/set
Dan O'Donovan [Fri, 10 Jun 2016 12:23:36 +0000 (13:23 +0100)]
pinctrl: cherryview: add handlers for pin_config_group_get/set

Pin config get/set handlers for pin groups were previously not
implemented by this driver.  The pin_config_group_set is
particularly useful for applying a common config setting to all
pins in a specified group with a single call, without the caller
needing to reference each individual pin by name.

Signed-off-by: Dan O'Donovan <dan@emutex.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: cherryview: add option to set open-drain pin config
Dan O'Donovan [Fri, 10 Jun 2016 12:23:35 +0000 (13:23 +0100)]
pinctrl: cherryview: add option to set open-drain pin config

On some CHV platforms, we need an option to configure the
open-drain setting for these pins.  This adds support for the
PIN_CONFIG_DRIVE_PUSH_PULL and PIN_CONFIG_DRIVE_OPEN_DRAIN to
disable/enable open-drain mode for a specific pin.

Signed-off-by: Dan O'Donovan <dan@emutex.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: cherryview: prevent concurrent access to GPIO controllers
Dan O'Donovan [Fri, 10 Jun 2016 12:23:34 +0000 (13:23 +0100)]
pinctrl: cherryview: prevent concurrent access to GPIO controllers

Due to a silicon issue on the Atom X5-Z8000 "Cherry Trail" processor
series, a common lock must be used to prevent concurrent accesses
across the 4 GPIO controllers managed by this driver.

See Intel Atom Z8000 Processor Series Specification Update
(Rev. 005), errata #CHT34, for further information.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Dan O'Donovan <dan@emutex.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: qcom-ssbi: support for PM8058
Linus Walleij [Fri, 3 Jun 2016 11:55:00 +0000 (13:55 +0200)]
pinctrl: qcom-ssbi: support for PM8058

The PM8058 is found in connection to the APQ8060 on the APQ8060
Dragonboard. Works the same as all others, just add the compatible
string for this variant.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Andy Gross <andy.gross@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: sh-pfc: fix property name in bindings doc
Wolfram Sang [Fri, 10 Jun 2016 15:11:25 +0000 (17:11 +0200)]
pinctrl: sh-pfc: fix property name in bindings doc

It must be "drive-strength", with a hyphen.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agopinctrl: sh-pfc: sh7757: Fix duplicate initializer in GPIO pinmux data
Geert Uytterhoeven [Fri, 10 Jun 2016 09:35:47 +0000 (11:35 +0200)]
pinctrl: sh-pfc: sh7757: Fix duplicate initializer in GPIO pinmux data

With C=1:

    drivers/pinctrl/sh-pfc/pfc-sh7757.c:1613:9: warning: Initializer entry defined twice
    drivers/pinctrl/sh-pfc/pfc-sh7757.c:1628:9:   also defined here

Remove the duplicate initializer to fix this.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
8 years agopinctrl: xway: Change structure initialisation to c99 style
Amitoj Kaur Chawla [Sat, 11 Jun 2016 04:02:52 +0000 (09:32 +0530)]
pinctrl: xway: Change structure initialisation to c99 style

Replace the in order struct initialisation style with explicit field
style.

The Coccinelle semantic patch used to make this change is as follows:

@decl@
identifier i1,fld;
type T;
field list[n] fs;
@@

struct i1 {
 fs
 T fld;
 ...};

@@
identifier decl.i1,i2,decl.fld;
expression e;
position bad.p, bad.fix;
@@

struct i1 i2@p = { ...,
+ .fld = e
- e@fix
 ,...};

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: Reflow/wrap paragraph describing GPIO interaction
Andrew Jeffery [Fri, 10 Jun 2016 07:16:36 +0000 (16:46 +0930)]
pinctrl: Reflow/wrap paragraph describing GPIO interaction

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: s/have/has/ in GPIO driver interaction description
Andrew Jeffery [Fri, 10 Jun 2016 07:16:35 +0000 (16:46 +0930)]
pinctrl: s/have/has/ in GPIO driver interaction description

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: Fix grammar in pinmux request list
Andrew Jeffery [Fri, 10 Jun 2016 07:16:34 +0000 (16:46 +0930)]
pinctrl: Fix grammar in pinmux request list

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: u300: make u300_pmx_registers static
Ben Dooks [Thu, 9 Jun 2016 10:55:00 +0000 (11:55 +0100)]
pinctrl: u300: make u300_pmx_registers static

The array u300_pmx_registers is not declared or used outside
of the driver, so make it static to avoid the following warning:

drivers/pinctrl/pinctrl-u300.c:673:11: warning: symbol 'u300_pmx_registers' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: Always recurse into bcm folder
Florian Fainelli [Wed, 8 Jun 2016 21:44:15 +0000 (14:44 -0700)]
pinctrl: Always recurse into bcm folder

drivers/pinctrl/bcm/Makefile properly builds individual drivers based on
their respective Kconfig symbols. ARCH_BCM is currently a menuconfig
option from arch/arm/mach-bcm/Kconfig, which is fine, but prevents ARM64
platforms which do not have such menuconfig option from building their
pinctrl drivers, so let's get rid of that dependency.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Scott Branden <scott.branden@broadcom.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: nomadik: fix warnings from unexported functions
Ben Dooks [Wed, 8 Jun 2016 16:07:42 +0000 (17:07 +0100)]
pinctrl: nomadik: fix warnings from unexported functions

There are five functions in the driver that are defined but
only used locally. Since these are not used in the current
kernel, delete them to avoid the following warnings:

drivers/pinctrl/nomadik/pinctrl-nomadik.c:1036:6: warning: symbol 'nmk_gpio_clocks_enable' was not declared. Should it be static?
drivers/pinctrl/nomadik/pinctrl-nomadik.c:1050:6: warning: symbol 'nmk_gpio_clocks_disable' was not declared. Should it be static?
drivers/pinctrl/nomadik/pinctrl-nomadik.c:1073:6: warning: symbol 'nmk_gpio_wakeups_suspend' was not declared. Should it be static?
drivers/pinctrl/nomadik/pinctrl-nomadik.c:1094:6: warning: symbol 'nmk_gpio_wakeups_resume' was not declared. Should it be static?
drivers/pinctrl/nomadik/pinctrl-nomadik.c:1120:6: warning: symbol 'nmk_gpio_read_pull' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: at91-pio4: make it explicitly non-modular
Paul Gortmaker [Tue, 7 Jun 2016 02:43:08 +0000 (22:43 -0400)]
pinctrl: at91-pio4: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/Kconfig:config PINCTRL_AT91PIO4
drivers/pinctrl/Kconfig:        bool "AT91 PIO4 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

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
is already contained at the top of the file in the comments.

Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: digicolor: make it explicitly non-modular
Paul Gortmaker [Tue, 7 Jun 2016 02:43:07 +0000 (22:43 -0400)]
pinctrl: digicolor: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/Kconfig:config PINCTRL_DIGICOLOR
drivers/pinctrl/Kconfig:        bool

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

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.

Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: zynq: make it explicitly non-modular
Paul Gortmaker [Tue, 7 Jun 2016 02:43:06 +0000 (22:43 -0400)]
pinctrl: zynq: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

config PINCTRL_ZYNQ
        bool "Pinctrl driver for Xilinx Zynq"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

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
is already contained at the top of the file in the comments.

Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Sören Brinkmann" <soren.brinkmann@xilinx.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: amd: make it explicitly non-modular
Paul Gortmaker [Tue, 7 Jun 2016 02:43:04 +0000 (22:43 -0400)]
pinctrl: amd: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

config PINCTRL_AMD
        bool "AMD GPIO pin control"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

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
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Cc: Ken Xue <Ken.Xue@amd.com>
Cc: Jeff Wu <Jeff.Wu@amd.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: lpc18xx: make it explicitly non-modular
Paul Gortmaker [Tue, 7 Jun 2016 02:43:03 +0000 (22:43 -0400)]
pinctrl: lpc18xx: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

config PINCTRL_LPC18XX
        bool "NXP LPC18XX/43XX SCU pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

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
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Joachim Eastwood <manabian@gmail.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: at91: make it explicitly non-modular
Paul Gortmaker [Tue, 7 Jun 2016 02:43:02 +0000 (22:43 -0400)]
pinctrl: at91: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/Kconfig:config PINCTRL_AT91
drivers/pinctrl/Kconfig:        bool "AT91 pinctrl driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was not being used in this driver, we don't need
to be concerned with initcall ordering changes when removing it.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: baytrail: make it explicitly non-modular
Paul Gortmaker [Tue, 7 Jun 2016 02:43:01 +0000 (22:43 -0400)]
pinctrl: baytrail: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

config PINCTRL_BAYTRAIL
        bool "Intel Baytrail GPIO pin control"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

Since module_init() was already not in use in this driver, we don't
have any concerns with init ordering changes here.

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
is already contained at the top of the file in the comments.

Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: sh-pfc: r8a7795: add support for voltage switching
Wolfram Sang [Mon, 6 Jun 2016 16:08:26 +0000 (18:08 +0200)]
pinctrl: sh-pfc: r8a7795: add support for voltage switching

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agopinctrl: sh-pfc: refactor voltage setting
Wolfram Sang [Mon, 6 Jun 2016 16:08:25 +0000 (18:08 +0200)]
pinctrl: sh-pfc: refactor voltage setting

All known hardware being able to switch voltages has the same POCCTRL
register. So, factor out the common code to the core and keep only
the pin-to-bit mapping SoC specific. Convert the only user, r8a7790.
In case POCCTRL should ever get more complex (more voltages to select?),
we should probably switch over to a describing array like drive strength
does currently.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agopinctrl: at91-pio4: fix non-exported functions
Ben Dooks [Tue, 7 Jun 2016 17:07:45 +0000 (18:07 +0100)]
pinctrl: at91-pio4: fix non-exported functions

The atmel_pctl_find_group_by_pin() and the atmel_pinctrl_remove()
functions are not exported, so fix the warnings about these
being exported without definitions by making them static.

drivers/pinctrl/pinctrl-at91-pio4.c:424:20: warning: symbol 'atmel_pctl_find_group_by_pin' was not declared. Should it be static?
drivers/pinctrl/pinctrl-at91-pio4.c:1077:5: warning: symbol 'atmel_pinctrl_remove' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: nsp-gpio: fix non-static functions
Ben Dooks [Tue, 7 Jun 2016 16:58:15 +0000 (17:58 +0100)]
pinctrl: nsp-gpio: fix non-static functions

Fixup warnings from functions that are not exported and
therefore should be marked static. Fixes:

drivers/pinctrl/bcm/pinctrl-nsp-gpio.c:461:5:
  warning: symbol 'nsp_pin_config_group_get' was not declared.
  Should it be static?
drivers/pinctrl/bcm/pinctrl-nsp-gpio.c:467:5:
  warning: symbol 'nsp_pin_config_group_set' was not declared.
  Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: fix NAND pin-mux settings for PH1-LD11/LD20
Masahiro Yamada [Tue, 7 Jun 2016 01:36:05 +0000 (10:36 +0900)]
pinctrl: uniphier: fix NAND pin-mux settings for PH1-LD11/LD20

My mistake in the initial support patches.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: mediatek: fix suspend/resume timing issue
hongkun.cao [Fri, 3 Jun 2016 03:28:14 +0000 (11:28 +0800)]
pinctrl: mediatek: fix suspend/resume timing issue

An irq which is a wake up source maybe masked unexpectedly if the wake
up source irq was triggered after pinctrl irqchip suspend and before
suspend_device_irqs finished.
Use *_noirq callbacks to guarantee pinctrl irqchip suspend would be
called after suspend_devices_irqs.

Signed-off-by: hongkun.cao <hongkun.cao@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: oxnas: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map
Neil Armstrong [Tue, 31 May 2016 09:36:15 +0000 (11:36 +0200)]
pinctrl: oxnas: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map

Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map, introduced in
d32f7fd3bbc3 ("pinctrl: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map")
but not reported into oxnas driver.

Fixes: 611dac1e48a4 ("pinctrl: Add Oxford Semiconductor OXNAS pinctrl and gpio driver")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: add UniPhier PH1-LD20 pinctrl driver
Masahiro Yamada [Tue, 31 May 2016 08:05:23 +0000 (17:05 +0900)]
pinctrl: uniphier: add UniPhier PH1-LD20 pinctrl driver

Add pin configuration and pinmux support for UniPhier PH1-LD20 SoC.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: add UniPhier PH1-LD11 pinctrl driver
Masahiro Yamada [Tue, 31 May 2016 08:05:22 +0000 (17:05 +0900)]
pinctrl: uniphier: add UniPhier PH1-LD11 pinctrl driver

Add pin configuration and pinmux support for UniPhier PH1-LD11 SoC.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: allow to have pinctrl node under syscon node
Masahiro Yamada [Tue, 31 May 2016 08:05:21 +0000 (17:05 +0900)]
pinctrl: uniphier: allow to have pinctrl node under syscon node

Currently, the UniPhier pinctrl driver itself is a syscon, but it
turned out much more reasonable to make it a child node of a syscon
because our syscon node consists of a bunch of system configuration
registers, not only pinctrl, but also phy, and misc registers.
It is difficult to split the node.

To allow to migrate to the new DT structure, this commit adds new
compatible strings to not disturb the existing DT.  After a while,
the old binding will be removed.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: add System Bus pin-mux settings
Masahiro Yamada [Tue, 31 May 2016 08:05:20 +0000 (17:05 +0900)]
pinctrl: uniphier: add System Bus pin-mux settings

This is needed to get access to UniPhier System Bus (external bus).

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: add dedicated pins to pin tables of PH1-LD4/sLD8
Masahiro Yamada [Tue, 31 May 2016 08:05:19 +0000 (17:05 +0900)]
pinctrl: uniphier: add dedicated pins to pin tables of PH1-LD4/sLD8

These pins do not support pin-muxing, but it is useful to support
pin configuration for them.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: support pin configuration for dedicated pins
Masahiro Yamada [Tue, 31 May 2016 08:05:18 +0000 (17:05 +0900)]
pinctrl: uniphier: support pin configuration for dedicated pins

PH1-LD4 and PH1-sLD8 SoCs have pins that support pin configuration
(pin biasing, drive strength control), but not pin-muxing.

Allow to fill the mux value table with -1 for those pins; pins with
mux value -1 will be skipped in the pin-mux set function.  The mux
value type should be changed from "unsigned" to "int" in order to
accommodate -1 as a special case.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: support per-pin input enable for new SoCs
Masahiro Yamada [Tue, 31 May 2016 08:05:17 +0000 (17:05 +0900)]
pinctrl: uniphier: support per-pin input enable for new SoCs

Upcoming new pinctrl drivers for PH1-LD11 and PH-LD20 support input
signal gating for each pin.  (While, existing ones only support it
per pin-group.)  This commit updates the core part for that.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: introduce capability flag
Masahiro Yamada [Tue, 31 May 2016 08:05:16 +0000 (17:05 +0900)]
pinctrl: uniphier: introduce capability flag

The core part of the UniPhier pinctrl driver needs to support a new
capability for upcoming UniPhier ARMv8 SoCs.  This sometimes happens
because pinctrl drivers include really SoC-specific stuff.

This commit intends to tidy up SoC-specific parameters of the existing
drivers before adding the new one.  Having just one flag would be
better than adding a new struct member every time a new SoC-specific
capability comes up.

At this time, there is one flag, UNIPHIER_PINCTRL_CAPS_DBGMUX_SEPARATE.
This capability (I'd say rather quirk) was added for PH1-Pro4 and
PH1-Pro5 as requirement from a customer.  For those SoCs, one pin-mux
setting is controlled by the combination of two separate registers; the
LSB bits at register offset (8 * N) and the MSB bits at (8 * N + 4).
Because it is impossible to update two separate registers atomically,
the LOAD_PINCTRL register should be set in order to make the pin-mux
settings really effective.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: support pin configuration in sparse pin space
Masahiro Yamada [Tue, 31 May 2016 08:05:15 +0000 (17:05 +0900)]
pinctrl: uniphier: support pin configuration in sparse pin space

Unfortunately, the pin number of the new SoC, PH1-LD11, is not
contiguous.  The base frame work must be adjusted to support the new
SoC pinctrl driver.  The pin_desc_get() exploits radix-tree for pin
look-up, so it works more efficiently with sparse pin space.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: support 3-bit drive strength control
Masahiro Yamada [Tue, 31 May 2016 08:05:14 +0000 (17:05 +0900)]
pinctrl: uniphier: support 3-bit drive strength control

The new ARMv8 SoC, PH1-LD20, supports more fine-grained drive
strength control.  Drive strength of some pins are controlled by
3-bit width registers (8-level granularity).

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: rename macros for drive strength control
Masahiro Yamada [Tue, 31 May 2016 08:05:13 +0000 (17:05 +0900)]
pinctrl: uniphier: rename macros for drive strength control

The new ARMv8 SoC, PH1-LD20, supports more fine-grained drive
strength control.  Some of the configuration registers on it have
3-bit width.

The feature will be supported in the next commit, but a problem is
that macro names are getting longer and longer in the current naming
scheme.

Before moving forward, this commit renames macros as follows:

  UNIPHIER_PIN_DRV_4_8        -> UNIPHIER_PIN_DRV_1BIT
  UNIPHIER_PIN_DRV_8_12_16_20 -> UNIPHIER_PIN_DRV_2BIT
  UNIPHIER_PIN_DRV_FIXED_4    -> UNIPHIER_PIN_DRV_FIXED4
  UNIPHIER_PIN_DRV_FIXED_5    -> UNIPHIER_PIN_DRV_FIXED5
  UNIPHIER_PIN_DRV_FIXED_8    -> UNIPHIER_PIN_DRV_FIXED8

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: allocate struct pinctrl_desc in probe function
Masahiro Yamada [Tue, 31 May 2016 08:05:12 +0000 (17:05 +0900)]
pinctrl: uniphier: allocate struct pinctrl_desc in probe function

Currently, every SoC driver defines struct pinctrl_desc statically,
i.e. it consumes memory footprint even if it is not probed.

In multi-platform, many pinctrl drivers are linked (generally as
built-in objects), although only one of them is actually used.
So, it is reasonable to allocate memory dynamically where possible.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
8 years agopinctrl: uniphier: set pinctrl_desc name in common probe function
Masahiro Yamada [Tue, 31 May 2016 08:05:11 +0000 (17:05 +0900)]
pinctrl: uniphier: set pinctrl_desc name in common probe function

Every SoC driver sets the same name for struct pinctrl_desc and
platform_driver.  The common probe function can set desc->name
instead of duplicating strings in each SoC driver.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>