GPIO: TPS65910: Move driver to drivers/gpio/

The GPIO driver should reside in drivers/gpio/ for better
organization.

Signed-off-by: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

3 files changed, 99 insertions, 0 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index b57ec09..d213646 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -424,4 +424,11 @@ config AB8500_GPIO
 	depends on AB8500_CORE && BROKEN
 	help
 	  Select this to enable the AB8500 IC GPIO driver
+
+config GPIO_TPS65910
+	bool "TPS65910 GPIO"
+	depends on MFD_TPS65910
+	help
+	  Select this option to enable GPIO driver for the TPS65910
+	  chip family.
 endif
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index d92ce3a..6a3387a 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -40,3 +40,4 @@ obj-$(CONFIG_GPIO_SX150X)	+= sx150x.o
 obj-$(CONFIG_GPIO_VX855)	+= vx855_gpio.o
 obj-$(CONFIG_GPIO_ML_IOH)	+= ml_ioh_gpio.o
 obj-$(CONFIG_AB8500_GPIO)       += ab8500-gpio.o
+obj-$(CONFIG_GPIO_TPS65910)	+= tps65910-gpio.o
diff --git a/drivers/gpio/tps65910-gpio.c b/drivers/gpio/tps65910-gpio.c
new file mode 100644
index 0000000..f3ae376
--- /dev/null
+++ b/drivers/gpio/tps65910-gpio.c
@@ -0,0 +1,91 @@
+/*
+ * tps65910-gpio.c  --  TI TPS6591x
+ *
+ * Copyright 2010 Texas Instruments Inc.
+ *
+ * Author: Graeme Gregory <gg@slimlogic.co.uk>
+ * Author: Jorge Eduardo Candelaria jedu@slimlogic.co.uk>
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under  the terms of the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/mfd/tps65910.h>
+
+static int tps65910_gpio_get(struct gpio_chip *gc, unsigned offset)
+{
+	struct tps65910 *tps65910 = container_of(gc, struct tps65910, gpio);
+	uint8_t val;
+
+	tps65910->read(tps65910, TPS65910_GPIO0, 1, &val);
+
+	if (val & GPIO0_GPIO_STS_MASK)
+		return 1;
+
+	return 0;
+}
+
+static void tps65910_gpio_set(struct gpio_chip *gc, unsigned offset,
+			      int value)
+{
+	struct tps65910 *tps65910 = container_of(gc, struct tps65910, gpio);
+
+	if (value)
+		tps65910_set_bits(tps65910, TPS65910_GPIO0,
+					GPIO0_GPIO_SET_MASK);
+	else
+		tps65910_clear_bits(tps65910, TPS65910_GPIO0,
+					GPIO0_GPIO_SET_MASK);
+}
+
+static int tps65910_gpio_output(struct gpio_chip *gc, unsigned offset,
+				int value)
+{
+	struct tps65910 *tps65910 = container_of(gc, struct tps65910, gpio);
+
+	/* Set the initial value */
+	tps65910_gpio_set(gc, 0, value);
+
+	return tps65910_set_bits(tps65910, TPS65910_GPIO0, GPIO0_GPIO_CFG_MASK);
+}
+
+static int tps65910_gpio_input(struct gpio_chip *gc, unsigned offset)
+{
+	struct tps65910 *tps65910 = container_of(gc, struct tps65910, gpio);
+
+	return tps65910_clear_bits(tps65910, TPS65910_GPIO0,
+					GPIO0_GPIO_CFG_MASK);
+}
+
+void tps65910_gpio_init(struct tps65910 *tps65910, int gpio_base)
+{
+	int ret;
+
+	if (!gpio_base)
+		return;
+
+	tps65910->gpio.owner		= THIS_MODULE;
+	tps65910->gpio.label		= tps65910->i2c_client->name;
+	tps65910->gpio.dev		= tps65910->dev;
+	tps65910->gpio.base		= gpio_base;
+	tps65910->gpio.ngpio		= 1;
+	tps65910->gpio.can_sleep	= 1;
+
+	tps65910->gpio.direction_input	= tps65910_gpio_input;
+	tps65910->gpio.direction_output	= tps65910_gpio_output;
+	tps65910->gpio.set		= tps65910_gpio_set;
+	tps65910->gpio.get		= tps65910_gpio_get;
+
+	ret = gpiochip_add(&tps65910->gpio);
+
+	if (ret)
+		dev_warn(tps65910->dev, "GPIO registration failed: %d\n", ret);
+}