Commit Graph

61 Commits

Author SHA1 Message Date
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Masahiro Yamada 6d363bd178 pinctrl: uniphier: include <linux/build_bug.h> instead of <linux/bug.h>
The #includes <linux/bug.h> is here to use BUILD_BUG_ON_ZERO().

Thanks to commit bc6245e5ef ("bug: split BUILD_BUG stuff out into
<linux/build_bug.h>"), it is now possible to reduce the number of
headers pulled in.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-09-12 11:18:17 +02:00
Kunihiko Hayashi 12219fd2bf pinctrl: uniphier: fix members of rmii group for Pro4
The ether_rmii_groups should have "ether_rmii" and "ether_rmiib" as
members. This patch replaces to them.

Fixes: 1e359ab128 ("pinctrl: uniphier: add Ethernet pin-mux settings")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-08-31 15:50:06 +02:00
Katsuhiro Suzuki abcac84fef pinctrl: uniphier: add Audio out pin-mux settings
The UniPhier LD11/20 SoC audio core use following 8 pins:
  AO1IEC, AO1ARC, AO1DACCK, AO1BCK, AO1LRCK, AO1D[0-2]

Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-08-22 14:35:03 +02:00
Masahiro Yamada 37f92c18a2 pinctrl: uniphier: widen all pinconf-derived arguments to u32
Since commit 58957d2edf ("pinctrl: Widen the generic pinconf argument
from 16 to 24 bits"), the generic pinconf arguments are handled by u32.

UniPhier pinctrl drivers do not support debouncing, so u16 is working,
but align the argument type to u32 for consistency.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-08-14 15:01:03 +02:00
Masahiro Yamada c3ed6f488a pinctrl: uniphier: add UniPhier PXs3 pinctrl driver
Add pin configuration and pinmux support for UniPhier PXs3 SoC.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-08-14 15:01:00 +02:00
Masahiro Yamada 9697509e3f pinctrl: uniphier: add suspend / resume support
Save registers lost in the sleep when suspending, and restore them
when resuming.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-08-14 15:01:00 +02:00
Masahiro Yamada 4e7679834b pinctrl: uniphier: omit redundant input enable bit information
For LD11/20 SoCs (capable of per-pin input enable), the iectrl bit
number matches its pin number.  So, this is redundant information.
Instead, we just need a flag to know if the iectrl gating exists or not.

With this refactoring, 5 bits in pin data will be saved.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-08-14 15:01:00 +02:00
Masahiro Yamada 7f6ee0a579 pinctrl: uniphier: clean up GPIO port muxing
There are a bunch of GPIO muxing data, but most of them are actually
unneeded because GPIO-to-pin mapping can be specified by "gpio-ranges"
DT properties.

Tables that contain a set of GPIO pins are still needed for the named
mapping by "gpio-ranges-group-names".  This is a much cleaner way for
UniPhier SoC family where GPIO numbers are not straight mapped to pin
numbers.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-08-14 15:01:00 +02:00
Masahiro Yamada e3829d1546 pinctrl: uniphier: fix pin_config_get() for input-enable
For LD11/LD20 SoCs (capable of per-pin input enable), iectrl bits are
located across multiple registers.  So, the register offset must be
taken into account.  Otherwise, wrong input-enable status is displayed.

While we here, rename the macro because it is a base address.

Fixes: aa543888ca ("pinctrl: uniphier: support per-pin input enable for new SoCs")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-08-14 15:01:00 +02:00
Masahiro Yamada 9fc939c683 pinctrl: uniphier: remove unneeded EXPORT_SYMBOL_GPL()
All UniPhier pinctrl drivers are built-in.  Exporting the symbol
is meaningless.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-08-14 15:01:00 +02:00
Kunihiko Hayashi 65ff135b4f pinctrl: uniphier: fix USB3 pin assignment for Pro4
According to pinctrl assignment for Pro4, each definition of USB#2 and
USB#3 are as follows.

  184: USB2VBUS
  185: USB2OD
  186: USB2ID
  187: USB3VBUS
  188: USB3OD

USB#2 has an additional pin "USB2ID", but the chip doesn't use this pin
while in host-mode. Considering this pin, the pin definitions for USB#3
should be {187, 188}.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-07-31 15:49:44 +02:00
Masahiro Yamada 1bd303dc04 pinctrl: uniphier: fix WARN_ON() of pingroups dump on LD20
The pingroups dump of debugfs hits WARN_ON() in pinctrl_groups_show().
Filling non-existing ports with '-1' turned out a bad idea.

Fixes: 336306ee1f ("pinctrl: uniphier: add UniPhier PH1-LD20 pinctrl driver")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-06-20 11:34:52 +02:00
Masahiro Yamada 9592bc256d pinctrl: uniphier: fix WARN_ON() of pingroups dump on LD11
The pingroups dump of debugfs hits WARN_ON() in pinctrl_groups_show().
Filling non-existing ports with '-1' turned out a bad idea.

Fixes: 70f2f9c4cf ("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>
2017-06-20 11:33:49 +02:00
Linus Torvalds 68fed41e0f This is the bulk of pin control changes for the v4.12 cycle:
Core changes:
 
 - Add bi-directional and output-enable pin configurations to
   the generic bindings and generic pin controlling core.
 
 New drivers or subdrivers:
 
 - Armada 37xx SoC pin controller and GPIO support.
 
 - Axis ARTPEC-6 SoC pin controller support.
 
 - AllWinner A64 R_PIO controller support, and opening up the
   AllWinner sunxi driver for ARM64 use.
 
 - Rockchip RK3328 support.
 
 - Renesas R-Car H3 ES2.0 support.
 
 - STM32F469 support in the STM32 driver.
 
 - Aspeed G4 and G5 pin controller support.
 
 Improvements:
 
 - A whole slew of realtime improvements to drivers implementing
   irqchips: BCM, AMD, SiRF, sunxi, rockchip.
 
 - Switch meson driver to get the GPIO ranges from the device
   tree.
 
 - Input schmitt trigger support on the Rockchip driver.
 
 - Enable the sunxi (AllWinner) driver to also be used on ARM64
   silicon.
 
 - Name the Qualcomm QDF2xxx GPIO lines.
 
 - Support GMMR GPIO regions on the Intel Cherryview. This
   fixes a serialization problem on these platforms.
 
 - Pad retention support for the Samsung Exynos 5433.
 
 - Handle suspend-to-ram in the AT91-pio4 driver.
 
 - Pin configuration support in the Aspeed driver.
 
 Cleanups:
 
 - The final name of Rockchip RK1108 was RV1108 so rename the
   driver and variables to stay consistent.
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Merge tag 'pinctrl-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v4.12 cycle.

  The extra week before the merge window actually resulted in some of
  the type of fixes that usually arrive after the merge window already
  starting to trickle in from eager developers using -next, I'm
  impressed.

  I have recruited a Samsung subsubsystem maintainer (Krzysztof) to deal
  with the onset of Samsung patches. It works great.

  Apart from that it is a boring round, just incremental updates and
  fixes all over the place, no serious core changes or anything exciting
  like that. The most pleasing to see is Julia Cartwrights work to audit
  the irqchip-providing drivers for realtime locking compliance. It's
  one of those "I should really get around to looking into that" things
  that have been on my TODO list since forever.

  Summary:

  Core changes:

   - add bi-directional and output-enable pin configurations to the
     generic bindings and generic pin controlling core.

  New drivers or subdrivers:

   - Armada 37xx SoC pin controller and GPIO support.

   - Axis ARTPEC-6 SoC pin controller support.

   - AllWinner A64 R_PIO controller support, and opening up the
     AllWinner sunxi driver for ARM64 use.

   - Rockchip RK3328 support.

   - Renesas R-Car H3 ES2.0 support.

   - STM32F469 support in the STM32 driver.

   - Aspeed G4 and G5 pin controller support.

  Improvements:

   - a whole slew of realtime improvements to drivers implementing
     irqchips: BCM, AMD, SiRF, sunxi, rockchip.

   - switch meson driver to get the GPIO ranges from the device tree.

   - input schmitt trigger support on the Rockchip driver.

   - enable the sunxi (AllWinner) driver to also be used on ARM64
     silicon.

   - name the Qualcomm QDF2xxx GPIO lines.

   - support GMMR GPIO regions on the Intel Cherryview. This fixes a
     serialization problem on these platforms.

   - pad retention support for the Samsung Exynos 5433.

   - handle suspend-to-ram in the AT91-pio4 driver.

   - pin configuration support in the Aspeed driver.

  Cleanups:

   - the final name of Rockchip RK1108 was RV1108 so rename the driver
     and variables to stay consistent"

* tag 'pinctrl-v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (80 commits)
  pinctrl: mediatek: Add missing pinctrl bindings for mt7623
  pinctrl: artpec6: Fix return value check in artpec6_pmx_probe()
  pinctrl: artpec6: Remove .owner field for driver
  pinctrl: tegra: xusb: Silence sparse warnings
  ARM: at91/at91-pinctrl documentation: fix spelling mistake: "contoller" -> "controller"
  pinctrl: make artpec6 explicitly non-modular
  pinctrl: aspeed: g5: Add pinconf support
  pinctrl: aspeed: g4: Add pinconf support
  pinctrl: aspeed: Add core pinconf support
  pinctrl: aspeed: Document pinconf in devicetree bindings
  pinctrl: Add st,stm32f469-pinctrl compatible to stm32-pinctrl
  pinctrl: stm32: Add STM32F469 MCU support
  Documentation: dt: Remove ngpios from stm32-pinctrl binding
  pinctrl: stm32: replace device_initcall() with arch_initcall()
  pinctrl: stm32: add possibility to use gpio-ranges to declare bank range
  pinctrl: armada-37xx: Add gpio support
  pinctrl: armada-37xx: Add pin controller support for Armada 37xx
  pinctrl: dt-bindings: Add documentation for Armada 37xx pin controllers
  pinctrl: core: Make pinctrl_init_controller() static
  pinctrl: generic: Add bi-directional and output-enable
  ...
2017-05-02 17:59:33 -07:00
Masahiro Yamada 2afd450d78 pinctrl: uniphier: make drivers non-modular
At first these drivers were written as tristate, but the module
usecases are actually not tested.  Make all of them boolean.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-03-23 10:09:51 +01:00
Masahiro Yamada 8ef364b3ce pinctrl: uniphier: remove obsoleted compatibles
Since commit 3e030b0b4e ("pinctrl: uniphier: allow to have pinctrl
node under syscon node"), this driver has kept compatibility for the
old DT files.  Several releases have passed since then, so remove
the obsoleted compatibles and clean up the code.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-03-23 10:09:43 +01:00
Kunihiko Hayashi 96e1ce8fcd pinctrl: uniphier: change pin names of aio/xirq for LD11
This patch changes pin names of AIO and XIRQ according to updated
specification.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-03-06 14:38:05 +01:00
Linus Walleij 7f36f5d11c Linux 4.10-rc6
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Merge tag 'v4.10-rc6' into devel

Linux 4.10-rc6

Resolved conflicts in:
	drivers/pinctrl/pinctrl-amd.c
	drivers/pinctrl/samsung/pinctrl-exynos.c
2017-01-30 14:39:20 +01:00
Mika Westerberg 58957d2edf pinctrl: Widen the generic pinconf argument from 16 to 24 bits
The current pinconf packed format allows only 16-bit argument limiting
the maximum value 65535. For most types this is enough. However,
debounce time can be in range of hundreths of milliseconds in case of
mechanical switches so we cannot represent the worst case using the
current format.

In order to support larger values change the packed format so that the
lower 8 bits are used as type which leaves 24 bits for the argument.
This allows representing values up to 16777215 and debounce times up to
16 seconds.

We also convert the existing users to use 32-bit integer when extracting
argument from the packed configuration value.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-26 15:22:32 +01:00
Masahiro Yamada df1539c25c pinctrl: uniphier: fix Ethernet (RMII) pin-mux setting for LD20
Fix the pin-mux values for the MDC, MDIO, MDIO_INTL, PHYRSTL pins.

Fixes: 1e359ab128 ("pinctrl: uniphier: add Ethernet pin-mux settings")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-19 10:36:40 +01:00
Masahiro Yamada 1e359ab128 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>
2016-07-11 09:53:25 +02:00
Masahiro Yamada cf9a2f6320 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: 70f2f9c4cf ("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>
2016-07-04 11:47:55 +02:00
Masahiro Yamada 53501c9771 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>
2016-06-18 10:03:09 +02:00
Masahiro Yamada 96c8b6903d 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>
2016-06-18 10:02:09 +02:00
Masahiro Yamada 9467f5688b 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>
2016-06-08 11:13:11 +02:00
Masahiro Yamada 336306ee1f 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>
2016-05-31 12:57:45 +02:00
Masahiro Yamada 70f2f9c4cf 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>
2016-05-31 12:56:25 +02:00
Masahiro Yamada 3e030b0b4e 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>
2016-05-31 12:54:14 +02:00
Masahiro Yamada a2456a77ab 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>
2016-05-31 12:53:06 +02:00
Masahiro Yamada 1e359ebe33 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>
2016-05-31 12:52:09 +02:00
Masahiro Yamada 39ec9ace7a 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>
2016-05-31 12:50:47 +02:00
Masahiro Yamada aa543888ca 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>
2016-05-31 12:49:48 +02:00
Masahiro Yamada c2ebf4754b 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>
2016-05-31 12:48:28 +02:00
Masahiro Yamada 94bf176b97 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>
2016-05-31 12:47:18 +02:00
Masahiro Yamada 72e5706aa7 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>
2016-05-31 12:46:18 +02:00
Masahiro Yamada 9eaa98a63c 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>
2016-05-31 12:42:04 +02:00
Masahiro Yamada fc78a56631 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>
2016-05-31 12:40:38 +02:00
Masahiro Yamada 4109508a85 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>
2016-05-31 12:39:31 +02:00
Masahiro Yamada 7d36b2451a pinctrl: uniphier: set pinctrl_desc owner in common probe function
The owner of the struct pinctrl_desc matches that of platform_driver.
Set it in the common probe function.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-05-31 12:38:30 +02:00
Masahiro Yamada 4725774f59 pinctrl: uniphier: fix register offsets for drive strength control
These pin tables were generated by parsing hardware documents with
a script, but the script had a bug.  Fix the register offsets.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-05-31 12:37:34 +02:00
Masahiro Yamada a4c6052bc1 pinctrl: uniphier: rename function and variable names
Make function/variable names match the file names for consistency.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-05-31 12:36:12 +02:00
Masahiro Yamada 10ef8277ec pinctrl: uniphier: fix .pin_dbg_show() callback
Without this, reading the "pins" in the debugfs causes kernel BUG.

Fixes: 6e90889202 ("pinctrl: UniPhier: add UniPhier pinctrl core support")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-05-31 10:56:16 +02:00
Laxman Dewangan 1ac471edd9 pinctrl: uniphier: Use devm_pinctrl_register() for pinctrl registration
Use devm_pinctrl_register() for pin control registration and remove
need of .remove callback.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-21 00:03:35 +02:00
Irina Tirdea d32f7fd3bb pinctrl: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map
Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map, since
it does not depend on device tree despite the current name. This
will enforce a consistent naming in pinctr-utils.c and will make
it clear it can be called from outside device tree (e.g. from
ACPI handling code).

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-01 15:06:36 +02:00
Masahiro Yamada 1233a1fbb0 pinctrl: uniphier: rename CONFIG options and file names
The current "CONFIG_PINCTRL_UNIPHIER_PH1_*" is too long.  It would
not hurt to drop "PH1_" because "UNIPHIER_" already well specifies
the SoC family.  Also, rename files for consistency.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-03-09 10:39:30 +07:00
Masahiro Yamada aac7e974eb pinctrl: uniphier: add COMPILE_TEST option
Add COMPILE_TEST for the compilation test coverage.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-02-10 10:55:39 +01:00
Masahiro Yamada b9a4e15545 pinctrl: uniphier: rework UniPhier pinctrl entries in Kconfig
There is a plan to support more pinctrl drivers for this SoC family.
Move the driver entries into a sub menu by using "menuconfig".
Also, add the missing dependency "depends on OF && MFD_SYSCON".

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-01 10:36:28 +01:00
Linus Torvalds bc9d8c20ff This is the big bulk of pin control changes for the
v4.4 kernel development cycle:
 
 Infrastructure:
 - Doug Anderson wrote a patch adding an "init" state
   different from the "default" state for pin control
   state handling in the core framework. This is applied
   before the driver's probe() call if defined and takes
   precedence over "default". If both are defined, "init"
   will be applied *before* probe() and "default" will be
   applied *after* probe().
 
 Significant subdriver improvements:
 - SH PFC is switched to getting GPIO ranges from the
   device tree ranges property on DT platforms.
 - Got rid of CONFIG_ARCH_SHMOBILE_LEGACY, we are all
   modernized.
 - Got rid of SH PFC hardcoded IRQ numbers.
 - Allwinner sunxi external interrupt through the "r"
   controller.
 - Moved the Cygnus driver to use DT-provided GPIO
   ranges.
 
 New drivers:
 - Atmel PIO4 pin controller for the SAMA4D2 family
 
 New subdrivers:
 - Rockchip RK3036 subdriver
 - Renesas SH PFC R8A7795 subdriver
 - Allwinner sunxi A83T PIO subdriver
 - Freescale i.MX7d iomux lpsr subdriver
 - Marvell Berlin BG4CT subdriver
 - SiRF Atlas 7 step B SoC subdriver
 - Intel Broxton SoC subdriver
 
 Apart from this, the usual slew if syntactic and semantic
 fixes.
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Merge tag 'pinctrl-v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the big bulk of pin control changes for the v4.4 kernel
  development cycle.  Development pace is high in pin control again this
  merge window.  28 contributors, 83 patches.

  It hits a few sites outside the pin control subsystem:

   - Device tree bindings in Documentation (as usual)
   - MAINTAINERS
   - drivers/base/* for the "init" state handling by Doug Anderson.
     This has been ACKed by Greg.
   - drivers/usb/renesas_usbhs/rcar2.c, for a dependent Renesas change
     in the USB subsystem.  This has been ACKed by both Greg and Felipe.
   - arch/arm/boot/dts/sama5d2.dtsi - this should ideally have gone
     through the ARM SoC tree but ended up here.

  This time I am using Geert Uytterhoeven as submaintainer for SH PFC
  since the are three-four people working in parallel with new Renesas
  ASICs.

  Summary of changes:

  Infrastructure:

   - Doug Anderson wrote a patch adding an "init" state different from
     the "default" state for pin control state handling in the core
     framework.  This is applied before the driver's probe() call if
     defined and takes precedence over "default".  If both are defined,
     "init" will be applied *before* probe() and "default" will be
     applied *after* probe().

  Significant subdriver improvements:

   - SH PFC is switched to getting GPIO ranges from the device tree
     ranges property on DT platforms.
   - Got rid of CONFIG_ARCH_SHMOBILE_LEGACY, we are all modernized.
   - Got rid of SH PFC hardcoded IRQ numbers.
   - Allwinner sunxi external interrupt through the "r" controller.
   - Moved the Cygnus driver to use DT-provided GPIO ranges.

  New drivers:

   - Atmel PIO4 pin controller for the SAMA4D2 family

  New subdrivers:

   - Rockchip RK3036 subdriver
   - Renesas SH PFC R8A7795 subdriver
   - Allwinner sunxi A83T PIO subdriver
   - Freescale i.MX7d iomux lpsr subdriver
   - Marvell Berlin BG4CT subdriver
   - SiRF Atlas 7 step B SoC subdriver
   - Intel Broxton SoC subdriver

  Apart from this, the usual slew if syntactic and semantic fixes"

* tag 'pinctrl-v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (81 commits)
  pinctrl: pinconf: remove needless loop
  pinctrl: uniphier: guard uniphier directory with CONFIG_PINCTRL_UNIPHIER
  pinctrl: zynq: fix UTF-8 errors
  pinctrl: zynq: Initialize early
  pinctrl: at91: add missing of_node_put
  pinctrl: tegra-xusb: Correct lane mux options
  pinctrl: intel: Add Intel Broxton pin controller support
  pinctrl: intel: Allow requesting pins which are in ACPI mode as GPIOs
  pinctrl: intel: Add support for multiple GPIO chips sharing the interrupt
  drivers/pinctrl: Add the concept of an "init" state
  pinctrl: uniphier: set input-enable before pin-muxing
  pinctrl: cygnus: Add new compatible string for gpio controller driver
  pinctrl: cygnus: Remove GPIO to Pinctrl pin mapping from driver
  pinctrl: cygnus: Optional DT property to support pin mappings
  pinctrl: sunxi: Add irq pinmuxing to sun6i "r" pincontroller
  pinctrl: sunxi: Fix irq_of_xlate for the r_pio pinctrl block
  pinctrl: sh-pfc: Remove obsolete r8a7778 platform_device_id entry
  pinctrl: sh-pfc: Remove obsolete r8a7779 platform_device_id entry
  pinctrl: sh-pfc: Stop including <linux/platform_data/gpio-rcar.h>
  usb: renesas_usbhs: Remove unneeded #include <linux/platform_data/gpio-rcar.h>
  ...
2015-11-02 12:30:39 -08:00
Masahiro Yamada 241297c2af pinctrl: uniphier: guard uniphier directory with CONFIG_PINCTRL_UNIPHIER
CONFIG_PINCTRL_UNIPHIER is more suitable than CONFIG_ARCH_UNIPHIER
to guard the drivers/pinctrl/uniphier directory.

The current CONFIG_PINCTRL_UNIPHIER_CORE is a bit long
(it would break the indentation in drivers/pinctrl/Makefile),
so rename it into CONFIG_PINCTRL_UNIPHIER.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-31 22:13:07 +01:00