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From: Richard Genoud <richard.genoud@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
	"Nicolas Ferre" <nicolas.ferre@atmel.com>,
	"Linus Walleij" <linus.walleij@linaro.org>,
	"Alexander Shiyan" <shc_work@mail.ru>,
	linux-serial@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	"Richard Genoud" <richard.genoud@gmail.com>,
	"Jean-Christophe Plagniol-Villard" <plagnioj@jcrosoft.com>
Subject: [PATCH v3 6/7] pinctrl: at91: implement get_direction
Date: Mon, 17 Feb 2014 17:57:26 +0100	[thread overview]
Message-ID: <1392656247-3351-7-git-send-email-richard.genoud@gmail.com> (raw)
In-Reply-To: <1392656247-3351-1-git-send-email-richard.genoud@gmail.com>

This is needed for gpiod_get_direction().
Otherwise, it returns -EINVAL.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
---
 drivers/pinctrl/pinctrl-at91.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index d990e33d8aa7..9bd18fdc604a 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1137,6 +1137,17 @@ static void at91_gpio_free(struct gpio_chip *chip, unsigned offset)
 	pinctrl_free_gpio(gpio);
 }
 
+static int at91_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
+{
+	struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+	void __iomem *pio = at91_gpio->regbase;
+	unsigned mask = 1 << offset;
+	u32 osr;
+
+	osr = readl_relaxed(pio + PIO_OSR);
+	return !(osr & mask);
+}
+
 static int at91_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
 	struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
@@ -1543,6 +1554,7 @@ static int at91_gpio_of_irq_setup(struct device_node *node,
 static struct gpio_chip at91_gpio_template = {
 	.request		= at91_gpio_request,
 	.free			= at91_gpio_free,
+	.get_direction		= at91_gpio_get_direction,
 	.direction_input	= at91_gpio_direction_input,
 	.get			= at91_gpio_get,
 	.direction_output	= at91_gpio_direction_output,
-- 
1.8.5


WARNING: multiple messages have this Message-ID (diff)
From: richard.genoud@gmail.com (Richard Genoud)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 6/7] pinctrl: at91: implement get_direction
Date: Mon, 17 Feb 2014 17:57:26 +0100	[thread overview]
Message-ID: <1392656247-3351-7-git-send-email-richard.genoud@gmail.com> (raw)
In-Reply-To: <1392656247-3351-1-git-send-email-richard.genoud@gmail.com>

This is needed for gpiod_get_direction().
Otherwise, it returns -EINVAL.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
---
 drivers/pinctrl/pinctrl-at91.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index d990e33d8aa7..9bd18fdc604a 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1137,6 +1137,17 @@ static void at91_gpio_free(struct gpio_chip *chip, unsigned offset)
 	pinctrl_free_gpio(gpio);
 }
 
+static int at91_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
+{
+	struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
+	void __iomem *pio = at91_gpio->regbase;
+	unsigned mask = 1 << offset;
+	u32 osr;
+
+	osr = readl_relaxed(pio + PIO_OSR);
+	return !(osr & mask);
+}
+
 static int at91_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
 	struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
@@ -1543,6 +1554,7 @@ static int at91_gpio_of_irq_setup(struct device_node *node,
 static struct gpio_chip at91_gpio_template = {
 	.request		= at91_gpio_request,
 	.free			= at91_gpio_free,
+	.get_direction		= at91_gpio_get_direction,
 	.direction_input	= at91_gpio_direction_input,
 	.get			= at91_gpio_get,
 	.direction_output	= at91_gpio_direction_output,
-- 
1.8.5

  parent reply	other threads:[~2014-02-17 16:58 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-17 16:57 [PATCH v3 0/7] tty/serial: Add helpers to use GPIOs to control modem lines and implement atmel_serial.c Richard Genoud
2014-02-17 16:57 ` Richard Genoud
2014-02-17 16:57 ` [PATCH v3 1/7] tty/serial: Add GPIOLIB helpers for controlling modem lines Richard Genoud
2014-02-17 16:57   ` Richard Genoud
2014-02-17 18:37   ` Alexander Shiyan
2014-02-17 18:37     ` Alexander Shiyan
2014-02-18  9:59     ` Richard Genoud
2014-02-18  9:59       ` Richard Genoud
2014-02-18 15:26       ` Alexander Shiyan
2014-02-18 15:26         ` Alexander Shiyan
2014-02-20 11:20         ` Richard Genoud
2014-02-20 11:20           ` Richard Genoud
2014-02-17 16:57 ` [PATCH v3 2/7] tty/serial: at91: use dev_err instead of printk Richard Genoud
2014-02-17 16:57   ` Richard Genoud
2014-02-17 16:57 ` [PATCH v3 3/7] tty/serial: at91: remove unused open/close hooks Richard Genoud
2014-02-17 16:57   ` Richard Genoud
2014-02-17 16:57 ` [PATCH v3 4/7] tty/serial: at91: use mctrl_gpio helpers Richard Genoud
2014-02-17 16:57   ` Richard Genoud
2014-02-18 15:04   ` Alexander Shiyan
2014-02-18 15:04     ` Alexander Shiyan
2014-02-18 15:09     ` Richard Genoud
2014-02-18 15:09       ` Richard Genoud
2014-02-17 16:57 ` [PATCH v3 5/7] ARM: at91: gpio: implement get_direction Richard Genoud
2014-02-17 16:57   ` Richard Genoud
2014-02-24 14:42   ` Linus Walleij
2014-02-24 14:42     ` Linus Walleij
2014-02-17 16:57 ` Richard Genoud [this message]
2014-02-17 16:57   ` [PATCH v3 6/7] pinctrl: at91: " Richard Genoud
2014-02-24 14:44   ` Linus Walleij
2014-02-24 14:44     ` Linus Walleij
2014-02-24 14:56     ` Richard Genoud
2014-02-24 14:56       ` Richard Genoud
2014-02-25  9:34       ` Linus Walleij
2014-02-25  9:34         ` Linus Walleij
2014-02-17 16:57 ` [PATCH v3 7/7] tty/serial: at91: add interrupts for modem control lines Richard Genoud
2014-02-17 16:57   ` Richard Genoud
2014-02-17 17:53 ` [PATCH v3 0/7] tty/serial: Add helpers to use GPIOs to control modem lines and implement atmel_serial.c Alexander Shiyan
2014-02-17 17:53   ` Alexander Shiyan
2014-02-18  9:59   ` Richard Genoud
2014-02-18  9:59     ` Richard Genoud

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