4 files changed, 136 insertions, 1 deletions

diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile
index 465b9ec9510..bfd902dc991 100644
--- a/arch/arm/mach-ux500/Makefile
+++ b/arch/arm/mach-ux500/Makefile
@@ -3,7 +3,7 @@
 #
 
 obj-y				:= clock.o cpu.o devices.o devices-common.o \
-				   id.o usb.o timer.o
+				   id.o pins.o usb.o timer.o
 obj-$(CONFIG_CACHE_L2X0)	+= cache-l2x0.o
 obj-$(CONFIG_UX500_SOC_DB5500)	+= cpu-db5500.o dma-db5500.o
 obj-$(CONFIG_UX500_SOC_DB8500)	+= cpu-db8500.o devices-db8500.o
diff --git a/arch/arm/mach-ux500/board-mop500-pins.c b/arch/arm/mach-ux500/board-mop500-pins.c
index f5413dca532..e2a2e501b69 100644
--- a/arch/arm/mach-ux500/board-mop500-pins.c
+++ b/arch/arm/mach-ux500/board-mop500-pins.c
@@ -14,6 +14,7 @@
 #include <mach/hardware.h>
 
 #include "pins-db8500.h"
+#include "pins.h"
 
 static pin_cfg_t mop500_pins_common[] = {
 	/* I2C */
diff --git a/arch/arm/mach-ux500/pins.c b/arch/arm/mach-ux500/pins.c
new file mode 100644
index 00000000000..38c1d47b29a
--- /dev/null
+++ b/arch/arm/mach-ux500/pins.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/err.h>
+#include <plat/pincfg.h>
+
+#include "pins.h"
+
+static LIST_HEAD(pin_lookups);
+static DEFINE_MUTEX(pin_lookups_mutex);
+static DEFINE_SPINLOCK(pins_lock);
+
+void __init ux500_pins_add(struct ux500_pin_lookup *pl, size_t num)
+{
+	mutex_lock(&pin_lookups_mutex);
+
+	while (num--) {
+		list_add_tail(&pl->node, &pin_lookups);
+		pl++;
+	}
+
+	mutex_unlock(&pin_lookups_mutex);
+}
+
+struct ux500_pins *ux500_pins_get(const char *name)
+{
+	struct ux500_pins *pins = NULL;
+	struct ux500_pin_lookup *pl;
+
+	mutex_lock(&pin_lookups_mutex);
+
+	list_for_each_entry(pl, &pin_lookups, node) {
+		if (!strcmp(pl->name, name)) {
+			pins = pl->pins;
+			goto out;
+		}
+	}
+
+out:
+	mutex_unlock(&pin_lookups_mutex);
+	return pins;
+}
+
+int ux500_pins_enable(struct ux500_pins *pins)
+{
+	unsigned long flags;
+	int ret = 0;
+
+	spin_lock_irqsave(&pins_lock, flags);
+
+	if (pins->usage++ == 0)
+		ret = nmk_config_pins(pins->cfg, pins->num);
+
+	spin_unlock_irqrestore(&pins_lock, flags);
+	return ret;
+}
+
+int ux500_pins_disable(struct ux500_pins *pins)
+{
+	unsigned long flags;
+	int ret = 0;
+
+	spin_lock_irqsave(&pins_lock, flags);
+
+	if (WARN_ON(pins->usage == 0))
+		goto out;
+
+	if (--pins->usage == 0)
+		ret = nmk_config_pins_sleep(pins->cfg, pins->num);
+
+out:
+	spin_unlock_irqrestore(&pins_lock, flags);
+	return ret;
+}
+
+void ux500_pins_put(struct ux500_pins *pins)
+{
+	WARN_ON(!pins);
+}
diff --git a/arch/arm/mach-ux500/pins.h b/arch/arm/mach-ux500/pins.h
new file mode 100644
index 00000000000..0d36af2e7d9
--- /dev/null
+++ b/arch/arm/mach-ux500/pins.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#ifndef __MACH_UX500_PINS_H
+#define __MACH_UX500_PINS_H
+
+#include <linux/list.h>
+#include <plat/pincfg.h>
+
+#define PIN_LOOKUP(_name, _pins)	\
+{					\
+	.name	= _name,		\
+	.pins	= _pins,		\
+}
+
+#define UX500_PINS(name, pins...)			\
+struct ux500_pins name = {				\
+	.cfg = (pin_cfg_t[]) {pins},			\
+	.num = ARRAY_SIZE(((pin_cfg_t[]) {pins})),	\
+}
+
+struct ux500_pins {
+	int usage;
+	int num;
+	pin_cfg_t *cfg;
+};
+
+struct ux500_pin_lookup {
+	struct list_head	node;
+	const char		*name;
+	struct ux500_pins	*pins;
+};
+
+void __init ux500_pins_add(struct ux500_pin_lookup *pl, size_t num);
+void __init ux500_offchip_gpio_init(struct ux500_pins *pins);
+struct ux500_pins *ux500_pins_get(const char *name);
+int ux500_pins_enable(struct ux500_pins *pins);
+int ux500_pins_disable(struct ux500_pins *pins);
+void ux500_pins_put(struct ux500_pins *pins);
+int pins_for_u9500(void);
+
+#endif