linux-kernel - [PATCH] pinctrl: rockchip: Implement .request() and .free() callbacks on the GPIO chips

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Message-ID: <1377613817.14731.1.camel@phoenix>
Date:	Tue, 27 Aug 2013 22:30:17 +0800
From:	Axel Lin <axel.lin@...ics.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Heiko Stübner <heiko@...ech.de>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] pinctrl: rockchip: Implement .request() and .free()
 callbacks on the GPIO chips

Implement .request() and .free() callbacks on the GPIO chips to inform pinctrl
when a GPIO is requested or freed.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/pinctrl/pinctrl-rockchip.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 64ad0c0..b1337eb 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -872,6 +872,16 @@ static int rockchip_pinctrl_register(struct platform_device *pdev,
  * GPIO handling
  */
 
+static int rockchip_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+	return pinctrl_request_gpio(chip->base + offset);
+}
+
+static void rockchip_gpio_free(struct gpio_chip *chip, unsigned offset)
+{
+	pinctrl_free_gpio(chip->base + offset);
+}
+
 static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
 {
 	struct rockchip_pin_bank *bank = gc_to_pin_bank(gc);
@@ -945,6 +955,8 @@ static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
 }
 
 static const struct gpio_chip rockchip_gpiolib_chip = {
+	.request = rockchip_gpio_request,
+	.free = rockchip_gpio_free,
 	.set = rockchip_gpio_set,
 	.get = rockchip_gpio_get,
 	.direction_input = rockchip_gpio_direction_input,
-- 
1.8.1.2



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