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-rw-r--r--arch/arm/mach-ux500/Makefile2
-rw-r--r--arch/arm/mach-ux500/board-mop500-pins.c1
-rw-r--r--arch/arm/mach-ux500/pins.c88
-rw-r--r--arch/arm/mach-ux500/pins.h46
4 files changed, 136 insertions, 1 deletions
diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile
index 465b9ec9510a..bfd902dc9911 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 f5413dca532c..e2a2e501b697 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 000000000000..38c1d47b29a1
--- /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 000000000000..0d36af2e7d92
--- /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