linux-kernel - [PATCH RFC 10/15 v5] gpio-pl061: Add block GPIO API

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Date:	Wed, 17 Oct 2012 14:31:42 +0200
From:	Roland Stigge <stigge@...com.de>
To:	gregkh@...uxfoundation.org, grant.likely@...retlab.ca,
	linus.walleij@...aro.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, w.sang@...gutronix.de,
	jbe@...gutronix.de, plagnioj@...osoft.com, highguy@...il.com,
	broonie@...nsource.wolfsonmicro.com, daniel-gl@....net,
	rmallon@...il.com
Cc:	Roland Stigge <stigge@...com.de>
Subject: [PATCH RFC 10/15 v5] gpio-pl061: Add block GPIO API

This patch adds block GPIO API support to the gpio-pl061 driver.

Signed-off-by: Roland Stigge <stigge@...com.de>
---
 drivers/gpio/gpio-pl061.c |   17 +++++++++++++++++
 1 file changed, 17 insertions(+)

--- linux-2.6.orig/drivers/gpio/gpio-pl061.c
+++ linux-2.6/drivers/gpio/gpio-pl061.c
@@ -123,6 +123,21 @@ static void pl061_set_value(struct gpio_
 	writeb(!!value << offset, chip->base + (1 << (offset + 2)));
 }
 
+static unsigned long pl061_get_block(struct gpio_chip *gc, unsigned long mask)
+{
+	struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
+
+	return !!readb(chip->base + (mask << 2));
+}
+
+static void pl061_set_block(struct gpio_chip *gc, unsigned long mask,
+			    unsigned long values)
+{
+	struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
+
+	writeb(values & mask, chip->base + (mask << 2));
+}
+
 static int pl061_to_irq(struct gpio_chip *gc, unsigned offset)
 {
 	struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
@@ -256,6 +271,8 @@ static int pl061_probe(struct amba_devic
 	chip->gc.direction_output = pl061_direction_output;
 	chip->gc.get = pl061_get_value;
 	chip->gc.set = pl061_set_value;
+	chip->gc.get_block = pl061_get_block;
+	chip->gc.set_block = pl061_set_block;
 	chip->gc.to_irq = pl061_to_irq;
 	chip->gc.ngpio = PL061_GPIO_NR;
 	chip->gc.label = dev_name(&dev->dev);
--
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