From: Jonas Gorski <jogo@openwrt.org>
To: linux-gpio@vger.kernel.org
Cc: Linus Walleij <linus.walleij@linaro.org>,
Alexandre Courbot <gnurou@gmail.com>,
Joachim Eastwood <manabian@gmail.com>,
Jonas Jensen <jonas.jensen@gmail.com>,
Gregory CLEMENT <gregory.clement@free-electrons.com>,
Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
James Hogan <james.hogan@imgtec.com>,
Stefan Agner <stefan@agner.ch>, Jun Nie <jun.nie@linaro.org>,
Stephen Warren <swarren@wwwdotorg.org>,
Lee Jones <lee@kernel.org>, Eric Anholt <eric@anholt.net>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Alessandro Rubini <rubini@unipv.it>,
Sonic Zhang <sonic.zhang@analog.com>,
Laxman Dewangan <ldewangan@nvidia.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Jonas Aaberg <jonas.aberg@stericsson.com>,
Baruch Siach <baruch@tkos.co.il>,
Andrew
Subject: [PATCH RFT 1/5] gpiolib: provide generic request/free implementations
Date: Sun, 13 Sep 2015 15:21:34 +0200 [thread overview]
Message-ID: <1442150498-31116-2-git-send-email-jogo@openwrt.org> (raw)
In-Reply-To: <1442150498-31116-1-git-send-email-jogo@openwrt.org>
Provide generic request/free implementations that pinctrl aware gpio
drivers can use instead of open coding if they use a 1:1 pin to gpio
signal mapping.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
---
drivers/gpio/gpiolib.c | 23 +++++++++++++++++++++++
include/linux/gpio/driver.h | 3 +++
2 files changed, 26 insertions(+)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 5db3445..e0853fb 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -15,6 +15,7 @@
#include <linux/acpi.h>
#include <linux/gpio/driver.h>
#include <linux/gpio/machine.h>
+#include <linux/pinctrl/consumer.h>
#include "gpiolib.h"
@@ -680,6 +681,28 @@ static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip) {}
#endif /* CONFIG_GPIOLIB_IRQCHIP */
+/**
+ * gpiochip_generic_request() - request the gpio function for a pin
+ * @chip: the gpiochip owning the GPIO
+ * @gpio: the GPIO signal to request for GPIO function
+ */
+int gpiochip_generic_request(struct gpio_chip *chip, unsigned gpio)
+{
+ return pinctrl_request_gpio(chip->base + gpio);
+}
+EXPORT_SYMBOL_GPL(gpiochip_generic_request);
+
+/**
+ * gpiochip_generic_free() - free the gpio function from a pin
+ * @chip: the gpiochip to request the gpio function for
+ * @gpio: the GPIO signal to free from GPIO
+ */
+void gpiochip_generic_free(struct gpio_chip *chip, unsigned gpio)
+{
+ pinctrl_free_gpio(chip->base + gpio);
+}
+EXPORT_SYMBOL_GPL(gpiochip_generic_free);
+
#ifdef CONFIG_PINCTRL
/**
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 1aed31c..0857c28 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -206,6 +206,9 @@ int _gpiochip_irqchip_add(struct gpio_chip *gpiochip,
#endif /* CONFIG_GPIOLIB_IRQCHIP */
+int gpiochip_generic_request(struct gpio_chip *chip, unsigned gpio);
+void gpiochip_generic_free(struct gpio_chip *chip, unsigned gpio);
+
#ifdef CONFIG_PINCTRL
/**
--
2.1.4
next prev parent reply other threads:[~2015-09-13 13:22 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-13 13:21 [PATCH RFT 0/5] gpiochip: add and use generic request/free Jonas Gorski
2015-09-13 13:21 ` Jonas Gorski [this message]
2015-10-05 9:17 ` [PATCH RFT 1/5] gpiolib: provide generic request/free implementations Linus Walleij
2015-09-13 13:21 ` [PATCH RFT 2/5] gpio: replace trivial implementations of request/free with generic one Jonas Gorski
2015-09-14 14:37 ` Thomas Petazzoni
2015-09-14 17:14 ` James Hogan
2015-09-15 3:32 ` Stefan Agner
2015-09-20 13:16 ` Joachim Eastwood
2015-09-13 13:21 ` [PATCH RFT 3/5] gpio: gpio-xz: use the generic request/free implementations Jonas Gorski
2015-09-13 13:21 ` [PATCH RFT 4/5] gpio: gpio-pl061: " Jonas Gorski
2015-10-05 9:19 ` Linus Walleij
2015-10-05 13:12 ` Jonas Gorski
2015-10-06 7:23 ` Linus Walleij
2015-09-13 13:21 ` [PATCH RFT 5/5] pinctrl: replace trivial implementations of gpio_chip request/free Jonas Gorski
2015-09-13 19:07 ` Bjorn Andersson
2015-09-13 19:20 ` Heiko Stübner
2015-09-14 14:18 ` Eric Anholt
2015-09-14 14:41 ` Mika Westerberg
2015-09-14 16:53 ` Andrew Bresticker
2015-09-16 11:07 ` Baruch Siach
2015-09-20 13:40 ` Matthias Brugger
2015-10-01 12:32 ` Lee Jones
2015-10-05 10:37 ` Laxman Dewangan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1442150498-31116-2-git-send-email-jogo@openwrt.org \
--to=jogo@openwrt.org \
--cc=baruch@tkos.co.il \
--cc=eric@anholt.net \
--cc=gnurou@gmail.com \
--cc=gregory.clement@free-electrons.com \
--cc=heikki.krogerus@linux.intel.com \
--cc=james.hogan@imgtec.com \
--cc=jonas.aberg@stericsson.com \
--cc=jonas.jensen@gmail.com \
--cc=jun.nie@linaro.org \
--cc=ldewangan@nvidia.com \
--cc=lee@kernel.org \
--cc=linus.walleij@linaro.org \
--cc=linux-gpio@vger.kernel.org \
--cc=manabian@gmail.com \
--cc=matthias.bgg@gmail.com \
--cc=mika.westerberg@linux.intel.com \
--cc=plagnioj@jcrosoft.com \
--cc=rubini@unipv.it \
--cc=sonic.zhang@analog.com \
--cc=stefan@agner.ch \
--cc=swarren@wwwdotorg.org \
--cc=thomas.petazzoni@free-electrons.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.