linux-kernel - [PATCH v2 0/4] mmc: simplify WP/CD GPIO handling

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Message-Id: <cover.1576031636.git.mirq-linux@rere.qmqm.pl>
Date:   Wed, 11 Dec 2019 03:40:54 +0100
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     linux-mmc@...r.kernel.org
Cc:     Ulf Hansson <ulf.hansson@...aro.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/4] mmc: simplify WP/CD GPIO handling

This series removes convoluted handling of inverted CD and WP lines in
SD/MMC host drivers when using GPIOs.

First patch adds an API: gpiod_toggle_active_low() that switches line
inversion flag in the gpiod structure. Next two patches modify MMC
host's WP and CD initialization to apply all the inversions onto
gpiod's active-low flag. Final patch removes now-unused argument from
init functions.

x86 allyesconfig build-tested. 

v2: move argument removal in sdhci-esdhc-imx.c to last patch

Michał Mirosław (4):
  gpio: add gpiod_toggle_active_low()
  mmc: rework wp-gpio handling
  mmc: rework cd-gpio handling
  mmc: remove mmc_gpiod_request_*(invert_gpio)

 drivers/gpio/gpiolib-of.c          | 21 -------------------
 drivers/gpio/gpiolib.c             | 11 ++++++++++
 drivers/mmc/core/host.c            | 33 ++++++++----------------------
 drivers/mmc/core/slot-gpio.c       | 31 ++++++++++------------------
 drivers/mmc/host/davinci_mmc.c     |  4 ++--
 drivers/mmc/host/mmc_spi.c         |  4 ++--
 drivers/mmc/host/mmci.c            |  4 ++--
 drivers/mmc/host/pxamci.c          | 12 +++++------
 drivers/mmc/host/s3cmci.c          |  4 ++--
 drivers/mmc/host/sdhci-acpi.c      |  2 +-
 drivers/mmc/host/sdhci-esdhc-imx.c | 15 +++++++-------
 drivers/mmc/host/sdhci-pci-core.c  |  4 ++--
 drivers/mmc/host/sdhci-sirf.c      |  2 +-
 drivers/mmc/host/sdhci-spear.c     |  2 +-
 drivers/mmc/host/tmio_mmc_core.c   |  2 +-
 include/linux/gpio/consumer.h      |  7 +++++++
 include/linux/mmc/slot-gpio.h      |  5 ++---
 17 files changed, 67 insertions(+), 96 deletions(-)

-- 
2.20.1