linux-kernel - [PATCH 0/2] Allow gpio-mmio to co-exist with pinctrl driver

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Date:   Wed, 17 Oct 2018 14:30:10 -0700
From:   Kun Yi <kunyi@...gle.com>
To:     linus.walleij@...aro.org, linux-gpio@...r.kernel.org,
        tmaimon77@...il.com
Cc:     linux-kernel@...r.kernel.org, avifishman70@...il.com,
        openbmc@...ts.ozlabs.org, Kun Yi <kunyi@...gle.com>
Subject: [PATCH 0/2] Allow gpio-mmio to co-exist with pinctrl driver

This patchset is to resolve an issue found with Nuvoton pinctrl driver
when it uses a generic GPIO interface. Since the generic GPIO driver
stores the bgpio_data and bgpio_dir shadow register values and later on
modify based on the stored values, any change to the pin states in
between by the pinctrl driver is lost.

Kun Yi (2):
  gpio: gpio-mmio: Allow volatile shadow regs
  pinctrl: pinctrl-npcm7xx: Set BGPIOF_VOLATILE_REG

 drivers/gpio/gpio-mmio.c                  | 50 +++++++++++++++--------
 drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c |  3 +-
 include/linux/gpio/driver.h               |  2 +
 3 files changed, 38 insertions(+), 17 deletions(-)

-- 
2.19.1.331.ge82ca0e54c-goog