linux-kernel - [PATCH RFC 15/15 v5] gpio-ucb1400: Add block GPIO API

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Date:	Wed, 17 Oct 2012 14:31:47 +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 15/15 v5] gpio-ucb1400: Add block GPIO API

This patch adds block GPIO API support to the gpio-ucb1400 driver.

Signed-off-by: Roland Stigge <stigge@...com.de>
---
 drivers/gpio/gpio-ucb1400.c |   23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

--- linux-2.6.orig/drivers/gpio/gpio-ucb1400.c
+++ linux-2.6/drivers/gpio/gpio-ucb1400.c
@@ -45,6 +45,27 @@ static void ucb1400_gpio_set(struct gpio
 	ucb1400_gpio_set_value(gpio->ac97, off, val);
 }
 
+static unsigned long ucb1400_gpio_get_block(struct gpio_chip *gc,
+					    unsigned long mask)
+{
+	struct ucb1400_gpio *gpio;
+	gpio = container_of(gc, struct ucb1400_gpio, gc);
+	return ucb1400_reg_read(gpio->ac97, UCB_IO_DATA) & mask;
+}
+
+static void ucb1400_gpio_set_block(struct gpio_chip *gc, unsigned long mask,
+				   unsigned long values)
+{
+	struct ucb1400_gpio *gpio;
+	u16 tmp;
+	gpio = container_of(gc, struct ucb1400_gpio, gc);
+
+	tmp = ucb1400_reg_read(gpio->ac97, UCB_IO_DATA) & ~mask;
+	tmp |= values & mask;
+
+	ucb1400_reg_write(gpio->ac97, UCB_IO_DATA, tmp);
+}
+
 static int ucb1400_gpio_probe(struct platform_device *dev)
 {
 	struct ucb1400_gpio *ucb = dev->dev.platform_data;
@@ -66,6 +87,8 @@ static int ucb1400_gpio_probe(struct pla
 	ucb->gc.direction_output = ucb1400_gpio_dir_out;
 	ucb->gc.get = ucb1400_gpio_get;
 	ucb->gc.set = ucb1400_gpio_set;
+	ucb->gc.get_block = ucb1400_gpio_get_block;
+	ucb->gc.set_block = ucb1400_gpio_set_block;
 	ucb->gc.can_sleep = 1;
 
 	err = gpiochip_add(&ucb->gc);
--
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