new file mode 100644
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+/*
+ * OMAP2+ specific gpio initialization
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author:
+ * Charulatha V <charu@ti.com>
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/gpio.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+
+#include <plat/omap_hwmod.h>
+#include <plat/omap_device.h>
+
+static struct omap_device_pm_latency omap_gpio_latency[] = {
+ [0] = {
+ .deactivate_func = omap_device_idle_hwmods,
+ .activate_func = omap_device_enable_hwmods,
+ .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
+ },
+};
+
+static int omap2_gpio_dev_init(struct omap_hwmod *oh, void *unused)
+{
+ struct omap_device *od;
+ struct omap_gpio_platform_data *pdata;
+ struct omap_gpio_dev_attr *dev_attr;
+ char *name = "omap_gpio";
+ int id;
+
+ /*
+ * extract the device id from name field available in the
+ * hwmod database and use the same for constructing ids for
+ * gpio devices.
+ * CAUTION: Make sure the name in the hwmod database does
+ * not change. If changed, make corresponding change here
+ * or make use of static variable mechanism to handle this.
+ */
+ sscanf(oh->name, "gpio%d", &id);
+
+ pdata = kzalloc(sizeof(struct omap_gpio_platform_data), GFP_KERNEL);
+ if (!pdata) {
+ pr_err("gpio%d: Memory allocation failed\n", id);
+ return -ENOMEM;
+ }
+
+ dev_attr = (struct omap_gpio_dev_attr *)oh->dev_attr;
+ pdata->bank_width = dev_attr->bank_width;
+ pdata->dbck_flag = dev_attr->dbck_flag;
+ pdata->virtual_irq_start = IH_GPIO_BASE + 32 * (id - 1);
+
+ switch (oh->class->rev) {
+ case 0:
+ case 1:
+ pdata->bank_type = METHOD_GPIO_24XX;
+ break;
+ case 2:
+ pdata->bank_type = METHOD_GPIO_44XX;
+ break;
+ default:
+ WARN(1, "Invalid gpio bank_type\n");
+ kfree(pdata);
+ return -EINVAL;
+ }
+
+ od = omap_device_build(name, id - 1, oh, pdata,
+ sizeof(*pdata), omap_gpio_latency,
+ ARRAY_SIZE(omap_gpio_latency),
+ false);
+ kfree(pdata);
+
+ if (IS_ERR(od)) {
+ WARN(1, "Cant build omap_device for %s:%s.\n",
+ name, oh->name);
+ return PTR_ERR(od);
+ }
+
+ gpio_bank_count++;
+ return 0;
+}
+
+/*
+ * gpio_init needs to be done before
+ * machine_init functions access gpio APIs.
+ * Hence gpio_init is a postcore_initcall.
+ */
+static int __init omap2_gpio_init(void)
+{
+ return omap_hwmod_for_each_by_class("gpio", omap2_gpio_dev_init,
+ NULL);
+}
+postcore_initcall(omap2_gpio_init);