[PATCH v2 0/2] Add definition for GPIO direction

[Matti Vaittinen]

The patch series adds definitions for GPIO line directions.

For occasional GPIO contributor like me it is always a pain to remember
whether 1 or 0 was used for GPIO direction INPUT/OUTPUT. Judging the
fact that I removed few comments like:

/* Return 0 if output, 1 if input */
/* This means "out" */
return 1; /* input */
return 0; /* output */

it seems at least some others may find it hard to remember too. Adding
defines for these values helps us who really have good - but short
duration - memory :]

This idea comes from RFC series for ROHM BD71828 PMIC and was initially
discussed with Linus Walleij here:
https://lore.kernel.org/lkml/c06725c3dd34118a324907137758d8b85b3d4043.camel@fi.rohmeurope.com/
but as this has no dependencies to BD71828 work (which probably takes a
while) I decided to make it independent series.

Patches are compile-tested only. I have no HW to really test them. Thus I'd
appreciate carefull review. This work is mainly about converting zeros
and ones to the new defines but it wouldn't be first time I get it
wrong.

Changelog v2:
 - squashed patches 2-61 into patch 2.
 - dropped patch 62 (can be applied later)
 - rebased (cherry-picked) changes on top of GPIO devel branch.

Patch 1:
 - adds the defines
Patch 2:
 - convert drivers to use new defines

This patch series is based on GPIO tree devel branch.

---

Matti Vaittinen (2):
  gpio: Add definition for GPIO direction
  gpio: Use new GPIO_LINE_DIRECTION

 drivers/gpio/gpio-104-dio-48e.c     |  5 ++++-
 drivers/gpio/gpio-104-idi-48.c      |  2 +-
 drivers/gpio/gpio-104-idio-16.c     |  4 ++--
 drivers/gpio/gpio-74xx-mmio.c       |  5 ++++-
 drivers/gpio/gpio-amd-fch.c         |  2 +-
 drivers/gpio/gpio-aspeed.c          |  7 +++----
 drivers/gpio/gpio-bcm-kona.c        |  6 +++---
 drivers/gpio/gpio-bd70528.c         |  8 +++++---
 drivers/gpio/gpio-bd9571mwv.c       |  4 +++-
 drivers/gpio/gpio-dln2.c            |  6 +++---
 drivers/gpio/gpio-exar.c            |  5 ++++-
 drivers/gpio/gpio-f7188x.c          |  5 ++++-
 drivers/gpio/gpio-gpio-mm.c         |  5 ++++-
 drivers/gpio/gpio-htc-egpio.c       |  5 ++++-
 drivers/gpio/gpio-ich.c             |  5 ++++-
 drivers/gpio/gpio-kempld.c          |  5 ++++-
 drivers/gpio/gpio-lp873x.c          |  2 +-
 drivers/gpio/gpio-lp87565.c         |  5 ++++-
 drivers/gpio/gpio-madera.c          |  5 ++++-
 drivers/gpio/gpio-max3191x.c        |  2 +-
 drivers/gpio/gpio-merrifield.c      |  5 ++++-
 drivers/gpio/gpio-mmio.c            | 21 +++++++++++++++------
 drivers/gpio/gpio-mockup.c          | 11 +++--------
 drivers/gpio/gpio-moxtet.c          |  4 ++--
 drivers/gpio/gpio-mvebu.c           |  5 ++++-
 drivers/gpio/gpio-mxs.c             |  5 ++++-
 drivers/gpio/gpio-omap.c            |  6 ++++--
 drivers/gpio/gpio-pca953x.c         |  5 ++++-
 drivers/gpio/gpio-pci-idio-16.c     |  4 ++--
 drivers/gpio/gpio-pcie-idio-24.c    |  9 ++++++---
 drivers/gpio/gpio-pisosr.c          |  2 +-
 drivers/gpio/gpio-pl061.c           |  5 ++++-
 drivers/gpio/gpio-raspberrypi-exp.c |  5 ++++-
 drivers/gpio/gpio-rcar.c            |  5 ++++-
 drivers/gpio/gpio-reg.c             |  3 ++-
 drivers/gpio/gpio-sa1100.c          |  5 ++++-
 drivers/gpio/gpio-sama5d2-piobu.c   |  7 ++++---
 drivers/gpio/gpio-sch.c             |  5 ++++-
 drivers/gpio/gpio-sch311x.c         |  5 ++++-
 drivers/gpio/gpio-siox.c            |  4 ++--
 drivers/gpio/gpio-stmpe.c           |  5 ++++-
 drivers/gpio/gpio-tc3589x.c         |  5 ++++-
 drivers/gpio/gpio-tegra.c           |  5 ++++-
 drivers/gpio/gpio-tegra186.c        |  4 ++--
 drivers/gpio/gpio-thunderx.c        |  5 ++++-
 drivers/gpio/gpio-tpic2810.c        |  2 +-
 drivers/gpio/gpio-tps65086.c        |  2 +-
 drivers/gpio/gpio-tps65912.c        |  4 ++--
 drivers/gpio/gpio-tps68470.c        |  6 +++---
 drivers/gpio/gpio-tqmx86.c          |  5 ++++-
 drivers/gpio/gpio-ts4900.c          |  5 ++++-
 drivers/gpio/gpio-twl4030.c         | 10 +++++-----
 drivers/gpio/gpio-twl6040.c         |  3 +--
 drivers/gpio/gpio-uniphier.c        |  5 ++++-
 drivers/gpio/gpio-wcove.c           |  7 +++++--
 drivers/gpio/gpio-ws16c48.c         |  5 ++++-
 drivers/gpio/gpio-xgene.c           |  5 ++++-
 drivers/gpio/gpio-xra1403.c         |  5 ++++-
 drivers/gpio/gpio-xtensa.c          |  4 ++--
 drivers/gpio/gpio-zynq.c            |  7 +++++--
 include/linux/gpio/driver.h         |  3 +++
 61 files changed, 214 insertions(+), 102 deletions(-)

-- 
2.21.0


-- 
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]