ARM: OMAP: Make omap_device local to mach-omap2

Let's make omap_device local to mach-omap2 for
ARM common zImage support.

Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 0 insertions, 1278 deletions

diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
deleted file mode 100644
index 7a7d1f2a65e9..000000000000
--- a/arch/arm/plat-omap/omap_device.c
+++ /dev/null
@@ -1,1278 +0,0 @@
-/*
- * omap_device implementation
- *
- * Copyright (C) 2009-2010 Nokia Corporation
- * Paul Walmsley, Kevin Hilman
- *
- * Developed in collaboration with (alphabetical order): Benoit
- * Cousson, Thara Gopinath, Tony Lindgren, Rajendra Nayak, Vikram
- * Pandita, Sakari Poussa, Anand Sawant, Santosh Shilimkar, Richard
- * Woodruff
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This code provides a consistent interface for OMAP device drivers
- * to control power management and interconnect properties of their
- * devices.
- *
- * In the medium- to long-term, this code should either be
- * a) implemented via arch-specific pointers in platform_data
- * or
- * b) implemented as a proper omap_bus/omap_device in Linux, no more
- *    platform_data func pointers
- *
- *
- * Guidelines for usage by driver authors:
- *
- * 1. These functions are intended to be used by device drivers via
- * function pointers in struct platform_data.  As an example,
- * omap_device_enable() should be passed to the driver as
- *
- * struct foo_driver_platform_data {
- * ...
- *      int (*device_enable)(struct platform_device *pdev);
- * ...
- * }
- *
- * Note that the generic "device_enable" name is used, rather than
- * "omap_device_enable".  This is so other architectures can pass in their
- * own enable/disable functions here.
- *
- * This should be populated during device setup:
- *
- * ...
- * pdata->device_enable = omap_device_enable;
- * ...
- *
- * 2. Drivers should first check to ensure the function pointer is not null
- * before calling it, as in:
- *
- * if (pdata->device_enable)
- *     pdata->device_enable(pdev);
- *
- * This allows other architectures that don't use similar device_enable()/
- * device_shutdown() functions to execute normally.
- *
- * ...
- *
- * Suggested usage by device drivers:
- *
- * During device initialization:
- * device_enable()
- *
- * During device idle:
- * (save remaining device context if necessary)
- * device_idle();
- *
- * During device resume:
- * device_enable();
- * (restore context if necessary)
- *
- * During device shutdown:
- * device_shutdown()
- * (device must be reinitialized at this point to use it again)
- *
- */
-#undef DEBUG
-
-#include <linux/kernel.h>
-#include <linux/export.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/clk.h>
-#include <linux/clkdev.h>
-#include <linux/pm_runtime.h>
-#include <linux/of.h>
-#include <linux/notifier.h>
-
-#include <plat/omap_device.h>
-#include <plat/omap_hwmod.h>
-#include <plat/clock.h>
-
-/* These parameters are passed to _omap_device_{de,}activate() */
-#define USE_WAKEUP_LAT			0
-#define IGNORE_WAKEUP_LAT		1
-
-static int omap_early_device_register(struct platform_device *pdev);
-
-static struct omap_device_pm_latency omap_default_latency[] = {
-	{
-		.deactivate_func = omap_device_idle_hwmods,
-		.activate_func   = omap_device_enable_hwmods,
-		.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
-	}
-};
-
-/* Private functions */
-
-/**
- * _omap_device_activate - increase device readiness
- * @od: struct omap_device *
- * @ignore_lat: increase to latency target (0) or full readiness (1)?
- *
- * Increase readiness of omap_device @od (thus decreasing device
- * wakeup latency, but consuming more power).  If @ignore_lat is
- * IGNORE_WAKEUP_LAT, make the omap_device fully active.  Otherwise,
- * if @ignore_lat is USE_WAKEUP_LAT, and the device's maximum wakeup
- * latency is greater than the requested maximum wakeup latency, step
- * backwards in the omap_device_pm_latency table to ensure the
- * device's maximum wakeup latency is less than or equal to the
- * requested maximum wakeup latency.  Returns 0.
- */
-static int _omap_device_activate(struct omap_device *od, u8 ignore_lat)
-{
-	struct timespec a, b, c;
-
-	dev_dbg(&od->pdev->dev, "omap_device: activating\n");
-
-	while (od->pm_lat_level > 0) {
-		struct omap_device_pm_latency *odpl;
-		unsigned long long act_lat = 0;
-
-		od->pm_lat_level--;
-
-		odpl = od->pm_lats + od->pm_lat_level;
-
-		if (!ignore_lat &&
-		    (od->dev_wakeup_lat <= od->_dev_wakeup_lat_limit))
-			break;
-
-		read_persistent_clock(&a);
-
-		/* XXX check return code */
-		odpl->activate_func(od);
-
-		read_persistent_clock(&b);
-
-		c = timespec_sub(b, a);
-		act_lat = timespec_to_ns(&c);
-
-		dev_dbg(&od->pdev->dev,
-			"omap_device: pm_lat %d: activate: elapsed time %llu nsec\n",
-			od->pm_lat_level, act_lat);
-
-		if (act_lat > odpl->activate_lat) {
-			odpl->activate_lat_worst = act_lat;
-			if (odpl->flags & OMAP_DEVICE_LATENCY_AUTO_ADJUST) {
-				odpl->activate_lat = act_lat;
-				dev_dbg(&od->pdev->dev,
-					"new worst case activate latency %d: %llu\n",
-					od->pm_lat_level, act_lat);
-			} else
-				dev_warn(&od->pdev->dev,
-					 "activate latency %d higher than expected. (%llu > %d)\n",
-					 od->pm_lat_level, act_lat,
-					 odpl->activate_lat);
-		}
-
-		od->dev_wakeup_lat -= odpl->activate_lat;
-	}
-
-	return 0;
-}
-
-/**
- * _omap_device_deactivate - decrease device readiness
- * @od: struct omap_device *
- * @ignore_lat: decrease to latency target (0) or full inactivity (1)?
- *
- * Decrease readiness of omap_device @od (thus increasing device
- * wakeup latency, but conserving power).  If @ignore_lat is
- * IGNORE_WAKEUP_LAT, make the omap_device fully inactive.  Otherwise,
- * if @ignore_lat is USE_WAKEUP_LAT, and the device's maximum wakeup
- * latency is less than the requested maximum wakeup latency, step
- * forwards in the omap_device_pm_latency table to ensure the device's
- * maximum wakeup latency is less than or equal to the requested
- * maximum wakeup latency.  Returns 0.
- */
-static int _omap_device_deactivate(struct omap_device *od, u8 ignore_lat)
-{
-	struct timespec a, b, c;
-
-	dev_dbg(&od->pdev->dev, "omap_device: deactivating\n");
-
-	while (od->pm_lat_level < od->pm_lats_cnt) {
-		struct omap_device_pm_latency *odpl;
-		unsigned long long deact_lat = 0;
-
-		odpl = od->pm_lats + od->pm_lat_level;
-
-		if (!ignore_lat &&
-		    ((od->dev_wakeup_lat + odpl->activate_lat) >
-		     od->_dev_wakeup_lat_limit))
-			break;
-
-		read_persistent_clock(&a);
-
-		/* XXX check return code */
-		odpl->deactivate_func(od);
-
-		read_persistent_clock(&b);
-
-		c = timespec_sub(b, a);
-		deact_lat = timespec_to_ns(&c);
-
-		dev_dbg(&od->pdev->dev,
-			"omap_device: pm_lat %d: deactivate: elapsed time %llu nsec\n",
-			od->pm_lat_level, deact_lat);
-
-		if (deact_lat > odpl->deactivate_lat) {
-			odpl->deactivate_lat_worst = deact_lat;
-			if (odpl->flags & OMAP_DEVICE_LATENCY_AUTO_ADJUST) {
-				odpl->deactivate_lat = deact_lat;
-				dev_dbg(&od->pdev->dev,
-					"new worst case deactivate latency %d: %llu\n",
-					od->pm_lat_level, deact_lat);
-			} else
-				dev_warn(&od->pdev->dev,
-					 "deactivate latency %d higher than expected. (%llu > %d)\n",
-					 od->pm_lat_level, deact_lat,
-					 odpl->deactivate_lat);
-		}
-
-		od->dev_wakeup_lat += odpl->activate_lat;
-
-		od->pm_lat_level++;
-	}
-
-	return 0;
-}
-
-static void _add_clkdev(struct omap_device *od, const char *clk_alias,
-		       const char *clk_name)
-{
-	struct clk *r;
-	struct clk_lookup *l;
-
-	if (!clk_alias || !clk_name)
-		return;
-
-	dev_dbg(&od->pdev->dev, "Creating %s -> %s\n", clk_alias, clk_name);
-
-	r = clk_get_sys(dev_name(&od->pdev->dev), clk_alias);
-	if (!IS_ERR(r)) {
-		dev_warn(&od->pdev->dev,
-			 "alias %s already exists\n", clk_alias);
-		clk_put(r);
-		return;
-	}
-
-	r = clk_get(NULL, clk_name);
-	if (IS_ERR(r)) {
-		dev_err(&od->pdev->dev,
-			"clk_get for %s failed\n", clk_name);
-		return;
-	}
-
-	l = clkdev_alloc(r, clk_alias, dev_name(&od->pdev->dev));
-	if (!l) {
-		dev_err(&od->pdev->dev,
-			"clkdev_alloc for %s failed\n", clk_alias);
-		return;
-	}
-
-	clkdev_add(l);
-}
-
-/**
- * _add_hwmod_clocks_clkdev - Add clkdev entry for hwmod optional clocks
- * and main clock
- * @od: struct omap_device *od
- * @oh: struct omap_hwmod *oh
- *
- * For the main clock and every optional clock present per hwmod per
- * omap_device, this function adds an entry in the clkdev table of the
- * form <dev-id=dev_name, con-id=role> if it does not exist already.
- *
- * The function is called from inside omap_device_build_ss(), after
- * omap_device_register.
- *
- * This allows drivers to get a pointer to its optional clocks based on its role
- * by calling clk_get(<dev*>, <role>).
- * In the case of the main clock, a "fck" alias is used.
- *
- * No return value.
- */
-static void _add_hwmod_clocks_clkdev(struct omap_device *od,
-				     struct omap_hwmod *oh)
-{
-	int i;
-
-	_add_clkdev(od, "fck", oh->main_clk);
-
-	for (i = 0; i < oh->opt_clks_cnt; i++)
-		_add_clkdev(od, oh->opt_clks[i].role, oh->opt_clks[i].clk);
-}
-
-
-/**
- * omap_device_build_from_dt - build an omap_device with multiple hwmods
- * @pdev_name: name of the platform_device driver to use
- * @pdev_id: this platform_device's connection ID
- * @oh: ptr to the single omap_hwmod that backs this omap_device
- * @pdata: platform_data ptr to associate with the platform_device
- * @pdata_len: amount of memory pointed to by @pdata
- * @pm_lats: pointer to a omap_device_pm_latency array for this device
- * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
- * @is_early_device: should the device be registered as an early device or not
- *
- * Function for building an omap_device already registered from device-tree
- *
- * Returns 0 or PTR_ERR() on error.
- */
-static int omap_device_build_from_dt(struct platform_device *pdev)
-{
-	struct omap_hwmod **hwmods;
-	struct omap_device *od;
-	struct omap_hwmod *oh;
-	struct device_node *node = pdev->dev.of_node;
-	const char *oh_name;
-	int oh_cnt, i, ret = 0;
-
-	oh_cnt = of_property_count_strings(node, "ti,hwmods");
-	if (!oh_cnt || IS_ERR_VALUE(oh_cnt)) {
-		dev_dbg(&pdev->dev, "No 'hwmods' to build omap_device\n");
-		return -ENODEV;
-	}
-
-	hwmods = kzalloc(sizeof(struct omap_hwmod *) * oh_cnt, GFP_KERNEL);
-	if (!hwmods) {
-		ret = -ENOMEM;
-		goto odbfd_exit;
-	}
-
-	for (i = 0; i < oh_cnt; i++) {
-		of_property_read_string_index(node, "ti,hwmods", i, &oh_name);
-		oh = omap_hwmod_lookup(oh_name);
-		if (!oh) {
-			dev_err(&pdev->dev, "Cannot lookup hwmod '%s'\n",
-				oh_name);
-			ret = -EINVAL;
-			goto odbfd_exit1;
-		}
-		hwmods[i] = oh;
-	}
-
-	od = omap_device_alloc(pdev, hwmods, oh_cnt, NULL, 0);
-	if (!od) {
-		dev_err(&pdev->dev, "Cannot allocate omap_device for :%s\n",
-			oh_name);
-		ret = PTR_ERR(od);
-		goto odbfd_exit1;
-	}
-
-	/* Fix up missing resource names */
-	for (i = 0; i < pdev->num_resources; i++) {
-		struct resource *r = &pdev->resource[i];
-
-		if (r->name == NULL)
-			r->name = dev_name(&pdev->dev);
-	}
-
-	if (of_get_property(node, "ti,no_idle_on_suspend", NULL))
-		omap_device_disable_idle_on_suspend(pdev);
-
-	pdev->dev.pm_domain = &omap_device_pm_domain;
-
-odbfd_exit1:
-	kfree(hwmods);
-odbfd_exit:
-	return ret;
-}
-
-static int _omap_device_notifier_call(struct notifier_block *nb,
-				      unsigned long event, void *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct omap_device *od;
-
-	switch (event) {
-	case BUS_NOTIFY_DEL_DEVICE:
-		if (pdev->archdata.od)
-			omap_device_delete(pdev->archdata.od);
-		break;
-	case BUS_NOTIFY_ADD_DEVICE:
-		if (pdev->dev.of_node)
-			omap_device_build_from_dt(pdev);
-		/* fall through */
-	default:
-		od = to_omap_device(pdev);
-		if (od)
-			od->_driver_status = event;
-	}
-
-	return NOTIFY_DONE;
-}
-
-
-/* Public functions for use by core code */
-
-/**
- * omap_device_get_context_loss_count - get lost context count
- * @od: struct omap_device *
- *
- * Using the primary hwmod, query the context loss count for this
- * device.
- *
- * Callers should consider context for this device lost any time this
- * function returns a value different than the value the caller got
- * the last time it called this function.
- *
- * If any hwmods exist for the omap_device assoiated with @pdev,
- * return the context loss counter for that hwmod, otherwise return
- * zero.
- */
-int omap_device_get_context_loss_count(struct platform_device *pdev)
-{
-	struct omap_device *od;
-	u32 ret = 0;
-
-	od = to_omap_device(pdev);
-
-	if (od->hwmods_cnt)
-		ret = omap_hwmod_get_context_loss_count(od->hwmods[0]);
-
-	return ret;
-}
-
-/**
- * omap_device_count_resources - count number of struct resource entries needed
- * @od: struct omap_device *
- *
- * Count the number of struct resource entries needed for this
- * omap_device @od.  Used by omap_device_build_ss() to determine how
- * much memory to allocate before calling
- * omap_device_fill_resources().  Returns the count.
- */
-static int omap_device_count_resources(struct omap_device *od)
-{
-	int c = 0;
-	int i;
-
-	for (i = 0; i < od->hwmods_cnt; i++)
-		c += omap_hwmod_count_resources(od->hwmods[i]);
-
-	pr_debug("omap_device: %s: counted %d total resources across %d hwmods\n",
-		 od->pdev->name, c, od->hwmods_cnt);
-
-	return c;
-}
-
-/**
- * omap_device_fill_resources - fill in array of struct resource
- * @od: struct omap_device *
- * @res: pointer to an array of struct resource to be filled in
- *
- * Populate one or more empty struct resource pointed to by @res with
- * the resource data for this omap_device @od.  Used by
- * omap_device_build_ss() after calling omap_device_count_resources().
- * Ideally this function would not be needed at all.  If omap_device
- * replaces platform_device, then we can specify our own
- * get_resource()/ get_irq()/etc functions that use the underlying
- * omap_hwmod information.  Or if platform_device is extended to use
- * subarchitecture-specific function pointers, the various
- * platform_device functions can simply call omap_device internal
- * functions to get device resources.  Hacking around the existing
- * platform_device code wastes memory.  Returns 0.
- */
-static int omap_device_fill_resources(struct omap_device *od,
-				      struct resource *res)
-{
-	int i, r;
-
-	for (i = 0; i < od->hwmods_cnt; i++) {
-		r = omap_hwmod_fill_resources(od->hwmods[i], res);
-		res += r;
-	}
-
-	return 0;
-}
-
-/**
- * _od_fill_dma_resources - fill in array of struct resource with dma resources
- * @od: struct omap_device *
- * @res: pointer to an array of struct resource to be filled in
- *
- * Populate one or more empty struct resource pointed to by @res with
- * the dma resource data for this omap_device @od.  Used by
- * omap_device_alloc() after calling omap_device_count_resources().
- *
- * Ideally this function would not be needed at all.  If we have
- * mechanism to get dma resources from DT.
- *
- * Returns 0.
- */
-static int _od_fill_dma_resources(struct omap_device *od,
-				      struct resource *res)
-{
-	int i, r;
-
-	for (i = 0; i < od->hwmods_cnt; i++) {
-		r = omap_hwmod_fill_dma_resources(od->hwmods[i], res);
-		res += r;
-	}
-
-	return 0;
-}
-
-/**
- * omap_device_alloc - allocate an omap_device
- * @pdev: platform_device that will be included in this omap_device
- * @oh: ptr to the single omap_hwmod that backs this omap_device
- * @pdata: platform_data ptr to associate with the platform_device
- * @pdata_len: amount of memory pointed to by @pdata
- * @pm_lats: pointer to a omap_device_pm_latency array for this device
- * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
- *
- * Convenience function for allocating an omap_device structure and filling
- * hwmods, resources and pm_latency attributes.
- *
- * Returns an struct omap_device pointer or ERR_PTR() on error;
- */
-struct omap_device *omap_device_alloc(struct platform_device *pdev,
-					struct omap_hwmod **ohs, int oh_cnt,
-					struct omap_device_pm_latency *pm_lats,
-					int pm_lats_cnt)
-{
-	int ret = -ENOMEM;
-	struct omap_device *od;
-	struct resource *res = NULL;
-	int i, res_count;
-	struct omap_hwmod **hwmods;
-
-	od = kzalloc(sizeof(struct omap_device), GFP_KERNEL);
-	if (!od) {
-		ret = -ENOMEM;
-		goto oda_exit1;
-	}
-	od->hwmods_cnt = oh_cnt;
-
-	hwmods = kmemdup(ohs, sizeof(struct omap_hwmod *) * oh_cnt, GFP_KERNEL);
-	if (!hwmods)
-		goto oda_exit2;
-
-	od->hwmods = hwmods;
-	od->pdev = pdev;
-
-	res_count = omap_device_count_resources(od);
-	/*
-	 * DT Boot:
-	 *   OF framework will construct the resource structure (currently
-	 *   does for MEM & IRQ resource) and we should respect/use these
-	 *   resources, killing hwmod dependency.
-	 *   If pdev->num_resources > 0, we assume that MEM & IRQ resources
-	 *   have been allocated by OF layer already (through DTB).
-	 *
-	 * Non-DT Boot:
-	 *   Here, pdev->num_resources = 0, and we should get all the
-	 *   resources from hwmod.
-	 *
-	 * TODO: Once DMA resource is available from OF layer, we should
-	 *   kill filling any resources from hwmod.
-	 */
-	if (res_count > pdev->num_resources) {
-		/* Allocate resources memory to account for new resources */
-		res = kzalloc(sizeof(struct resource) * res_count, GFP_KERNEL);
-		if (!res)
-			goto oda_exit3;
-
-		/*
-		 * If pdev->num_resources > 0, then assume that,
-		 * MEM and IRQ resources will only come from DT and only
-		 * fill DMA resource from hwmod layer.
-		 */
-		if (pdev->num_resources && pdev->resource) {
-			dev_dbg(&pdev->dev, "%s(): resources already allocated %d\n",
-				__func__, res_count);
-			memcpy(res, pdev->resource,
-			       sizeof(struct resource) * pdev->num_resources);
-			_od_fill_dma_resources(od, &res[pdev->num_resources]);
-		} else {
-			dev_dbg(&pdev->dev, "%s(): using resources from hwmod %d\n",
-				__func__, res_count);
-			omap_device_fill_resources(od, res);
-		}
-
-		ret = platform_device_add_resources(pdev, res, res_count);
-		kfree(res);
-
-		if (ret)
-			goto oda_exit3;
-	}
-
-	if (!pm_lats) {
-		pm_lats = omap_default_latency;
-		pm_lats_cnt = ARRAY_SIZE(omap_default_latency);
-	}
-
-	od->pm_lats_cnt = pm_lats_cnt;
-	od->pm_lats = kmemdup(pm_lats,
-			sizeof(struct omap_device_pm_latency) * pm_lats_cnt,
-			GFP_KERNEL);
-	if (!od->pm_lats)
-		goto oda_exit3;
-
-	pdev->archdata.od = od;
-
-	for (i = 0; i < oh_cnt; i++) {
-		hwmods[i]->od = od;
-		_add_hwmod_clocks_clkdev(od, hwmods[i]);
-	}
-
-	return od;
-
-oda_exit3:
-	kfree(hwmods);
-oda_exit2:
-	kfree(od);
-oda_exit1:
-	dev_err(&pdev->dev, "omap_device: build failed (%d)\n", ret);
-
-	return ERR_PTR(ret);
-}
-
-void omap_device_delete(struct omap_device *od)
-{
-	if (!od)
-		return;
-
-	od->pdev->archdata.od = NULL;
-	kfree(od->pm_lats);
-	kfree(od->hwmods);
-	kfree(od);
-}
-
-/**
- * omap_device_build - build and register an omap_device with one omap_hwmod
- * @pdev_name: name of the platform_device driver to use
- * @pdev_id: this platform_device's connection ID
- * @oh: ptr to the single omap_hwmod that backs this omap_device
- * @pdata: platform_data ptr to associate with the platform_device
- * @pdata_len: amount of memory pointed to by @pdata
- * @pm_lats: pointer to a omap_device_pm_latency array for this device
- * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
- * @is_early_device: should the device be registered as an early device or not
- *
- * Convenience function for building and registering a single
- * omap_device record, which in turn builds and registers a
- * platform_device record.  See omap_device_build_ss() for more
- * information.  Returns ERR_PTR(-EINVAL) if @oh is NULL; otherwise,
- * passes along the return value of omap_device_build_ss().
- */
-struct platform_device __init *omap_device_build(const char *pdev_name, int pdev_id,
-				      struct omap_hwmod *oh, void *pdata,
-				      int pdata_len,
-				      struct omap_device_pm_latency *pm_lats,
-				      int pm_lats_cnt, int is_early_device)
-{
-	struct omap_hwmod *ohs[] = { oh };
-
-	if (!oh)
-		return ERR_PTR(-EINVAL);
-
-	return omap_device_build_ss(pdev_name, pdev_id, ohs, 1, pdata,
-				    pdata_len, pm_lats, pm_lats_cnt,
-				    is_early_device);
-}
-
-/**
- * omap_device_build_ss - build and register an omap_device with multiple hwmods
- * @pdev_name: name of the platform_device driver to use
- * @pdev_id: this platform_device's connection ID
- * @oh: ptr to the single omap_hwmod that backs this omap_device
- * @pdata: platform_data ptr to associate with the platform_device
- * @pdata_len: amount of memory pointed to by @pdata
- * @pm_lats: pointer to a omap_device_pm_latency array for this device
- * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
- * @is_early_device: should the device be registered as an early device or not
- *
- * Convenience function for building and registering an omap_device
- * subsystem record.  Subsystem records consist of multiple
- * omap_hwmods.  This function in turn builds and registers a
- * platform_device record.  Returns an ERR_PTR() on error, or passes
- * along the return value of omap_device_register().
- */
-struct platform_device __init *omap_device_build_ss(const char *pdev_name, int pdev_id,
-					 struct omap_hwmod **ohs, int oh_cnt,
-					 void *pdata, int pdata_len,
-					 struct omap_device_pm_latency *pm_lats,
-					 int pm_lats_cnt, int is_early_device)
-{
-	int ret = -ENOMEM;
-	struct platform_device *pdev;
-	struct omap_device *od;
-
-	if (!ohs || oh_cnt == 0 || !pdev_name)
-		return ERR_PTR(-EINVAL);
-
-	if (!pdata && pdata_len > 0)
-		return ERR_PTR(-EINVAL);
-
-	pdev = platform_device_alloc(pdev_name, pdev_id);
-	if (!pdev) {
-		ret = -ENOMEM;
-		goto odbs_exit;
-	}
-
-	/* Set the dev_name early to allow dev_xxx in omap_device_alloc */
-	if (pdev->id != -1)
-		dev_set_name(&pdev->dev, "%s.%d", pdev->name,  pdev->id);
-	else
-		dev_set_name(&pdev->dev, "%s", pdev->name);
-
-	od = omap_device_alloc(pdev, ohs, oh_cnt, pm_lats, pm_lats_cnt);
-	if (IS_ERR(od))
-		goto odbs_exit1;
-
-	ret = platform_device_add_data(pdev, pdata, pdata_len);
-	if (ret)
-		goto odbs_exit2;
-
-	if (is_early_device)
-		ret = omap_early_device_register(pdev);
-	else
-		ret = omap_device_register(pdev);
-	if (ret)
-		goto odbs_exit2;
-
-	return pdev;
-
-odbs_exit2:
-	omap_device_delete(od);
-odbs_exit1:
-	platform_device_put(pdev);
-odbs_exit:
-
-	pr_err("omap_device: %s: build failed (%d)\n", pdev_name, ret);
-
-	return ERR_PTR(ret);
-}
-
-/**
- * omap_early_device_register - register an omap_device as an early platform
- * device.
- * @od: struct omap_device * to register
- *
- * Register the omap_device structure.  This currently just calls
- * platform_early_add_device() on the underlying platform_device.
- * Returns 0 by default.
- */
-static int __init omap_early_device_register(struct platform_device *pdev)
-{
-	struct platform_device *devices[1];
-
-	devices[0] = pdev;
-	early_platform_add_devices(devices, 1);
-	return 0;
-}
-
-#ifdef CONFIG_PM_RUNTIME
-static int _od_runtime_suspend(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	int ret;
-
-	ret = pm_generic_runtime_suspend(dev);
-
-	if (!ret)
-		omap_device_idle(pdev);
-
-	return ret;
-}
-
-static int _od_runtime_idle(struct device *dev)
-{
-	return pm_generic_runtime_idle(dev);
-}
-
-static int _od_runtime_resume(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-
-	omap_device_enable(pdev);
-
-	return pm_generic_runtime_resume(dev);
-}
-#endif
-
-#ifdef CONFIG_SUSPEND
-static int _od_suspend_noirq(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct omap_device *od = to_omap_device(pdev);
-	int ret;
-
-	/* Don't attempt late suspend on a driver that is not bound */
-	if (od->_driver_status != BUS_NOTIFY_BOUND_DRIVER)
-		return 0;
-
-	ret = pm_generic_suspend_noirq(dev);
-
-	if (!ret && !pm_runtime_status_suspended(dev)) {
-		if (pm_generic_runtime_suspend(dev) == 0) {
-			if (!(od->flags & OMAP_DEVICE_NO_IDLE_ON_SUSPEND))
-				omap_device_idle(pdev);
-			od->flags |= OMAP_DEVICE_SUSPENDED;
-		}
-	}
-
-	return ret;
-}
-
-static int _od_resume_noirq(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct omap_device *od = to_omap_device(pdev);
-
-	if ((od->flags & OMAP_DEVICE_SUSPENDED) &&
-	    !pm_runtime_status_suspended(dev)) {
-		od->flags &= ~OMAP_DEVICE_SUSPENDED;
-		if (!(od->flags & OMAP_DEVICE_NO_IDLE_ON_SUSPEND))
-			omap_device_enable(pdev);
-		pm_generic_runtime_resume(dev);
-	}
-
-	return pm_generic_resume_noirq(dev);
-}
-#else
-#define _od_suspend_noirq NULL
-#define _od_resume_noirq NULL
-#endif
-
-struct dev_pm_domain omap_device_pm_domain = {
-	.ops = {
-		SET_RUNTIME_PM_OPS(_od_runtime_suspend, _od_runtime_resume,
-				   _od_runtime_idle)
-		USE_PLATFORM_PM_SLEEP_OPS
-		.suspend_noirq = _od_suspend_noirq,
-		.resume_noirq = _od_resume_noirq,
-	}
-};
-
-/**
- * omap_device_register - register an omap_device with one omap_hwmod
- * @od: struct omap_device * to register
- *
- * Register the omap_device structure.  This currently just calls
- * platform_device_register() on the underlying platform_device.
- * Returns the return value of platform_device_register().
- */
-int omap_device_register(struct platform_device *pdev)
-{
-	pr_debug("omap_device: %s: registering\n", pdev->name);
-
-	pdev->dev.pm_domain = &omap_device_pm_domain;
-	return platform_device_add(pdev);
-}
-
-
-/* Public functions for use by device drivers through struct platform_data */
-
-/**
- * omap_device_enable - fully activate an omap_device
- * @od: struct omap_device * to activate
- *
- * Do whatever is necessary for the hwmods underlying omap_device @od
- * to be accessible and ready to operate.  This generally involves
- * enabling clocks, setting SYSCONFIG registers; and in the future may
- * involve remuxing pins.  Device drivers should call this function
- * (through platform_data function pointers) where they would normally
- * enable clocks, etc.  Returns -EINVAL if called when the omap_device
- * is already enabled, or passes along the return value of
- * _omap_device_activate().
- */
-int omap_device_enable(struct platform_device *pdev)
-{
-	int ret;
-	struct omap_device *od;
-
-	od = to_omap_device(pdev);
-
-	if (od->_state == OMAP_DEVICE_STATE_ENABLED) {
-		dev_warn(&pdev->dev,
-			 "omap_device: %s() called from invalid state %d\n",
-			 __func__, od->_state);
-		return -EINVAL;
-	}
-
-	/* Enable everything if we're enabling this device from scratch */
-	if (od->_state == OMAP_DEVICE_STATE_UNKNOWN)
-		od->pm_lat_level = od->pm_lats_cnt;
-
-	ret = _omap_device_activate(od, IGNORE_WAKEUP_LAT);
-
-	od->dev_wakeup_lat = 0;
-	od->_dev_wakeup_lat_limit = UINT_MAX;
-	od->_state = OMAP_DEVICE_STATE_ENABLED;
-
-	return ret;
-}
-
-/**
- * omap_device_idle - idle an omap_device
- * @od: struct omap_device * to idle
- *
- * Idle omap_device @od by calling as many .deactivate_func() entries
- * in the omap_device's pm_lats table as is possible without exceeding
- * the device's maximum wakeup latency limit, pm_lat_limit.  Device
- * drivers should call this function (through platform_data function
- * pointers) where they would normally disable clocks after operations
- * complete, etc..  Returns -EINVAL if the omap_device is not
- * currently enabled, or passes along the return value of
- * _omap_device_deactivate().
- */
-int omap_device_idle(struct platform_device *pdev)
-{
-	int ret;
-	struct omap_device *od;
-
-	od = to_omap_device(pdev);
-
-	if (od->_state != OMAP_DEVICE_STATE_ENABLED) {
-		dev_warn(&pdev->dev,
-			 "omap_device: %s() called from invalid state %d\n",
-			 __func__, od->_state);
-		return -EINVAL;
-	}
-
-	ret = _omap_device_deactivate(od, USE_WAKEUP_LAT);
-
-	od->_state = OMAP_DEVICE_STATE_IDLE;
-
-	return ret;
-}
-
-/**
- * omap_device_shutdown - shut down an omap_device
- * @od: struct omap_device * to shut down
- *
- * Shut down omap_device @od by calling all .deactivate_func() entries
- * in the omap_device's pm_lats table and then shutting down all of
- * the underlying omap_hwmods.  Used when a device is being "removed"
- * or a device driver is being unloaded.  Returns -EINVAL if the
- * omap_device is not currently enabled or idle, or passes along the
- * return value of _omap_device_deactivate().
- */
-int omap_device_shutdown(struct platform_device *pdev)
-{
-	int ret, i;
-	struct omap_device *od;
-
-	od = to_omap_device(pdev);
-
-	if (od->_state != OMAP_DEVICE_STATE_ENABLED &&
-	    od->_state != OMAP_DEVICE_STATE_IDLE) {
-		dev_warn(&pdev->dev,
-			 "omap_device: %s() called from invalid state %d\n",
-			 __func__, od->_state);
-		return -EINVAL;
-	}
-
-	ret = _omap_device_deactivate(od, IGNORE_WAKEUP_LAT);
-
-	for (i = 0; i < od->hwmods_cnt; i++)
-		omap_hwmod_shutdown(od->hwmods[i]);
-
-	od->_state = OMAP_DEVICE_STATE_SHUTDOWN;
-
-	return ret;
-}
-
-/**
- * omap_device_assert_hardreset - set a device's hardreset line
- * @pdev: struct platform_device * to reset
- * @name: const char * name of the reset line
- *
- * Set the hardreset line identified by @name on the IP blocks
- * associated with the hwmods backing the platform_device @pdev.  All
- * of the hwmods associated with @pdev must have the same hardreset
- * line linked to them for this to work.  Passes along the return value
- * of omap_hwmod_assert_hardreset() in the event of any failure, or
- * returns 0 upon success.
- */
-int omap_device_assert_hardreset(struct platform_device *pdev, const char *name)
-{
-	struct omap_device *od = to_omap_device(pdev);
-	int ret = 0;
-	int i;
-
-	for (i = 0; i < od->hwmods_cnt; i++) {
-		ret = omap_hwmod_assert_hardreset(od->hwmods[i], name);
-		if (ret)
-			break;
-	}
-
-	return ret;
-}
-
-/**
- * omap_device_deassert_hardreset - release a device's hardreset line
- * @pdev: struct platform_device * to reset
- * @name: const char * name of the reset line
- *
- * Release the hardreset line identified by @name on the IP blocks
- * associated with the hwmods backing the platform_device @pdev.  All
- * of the hwmods associated with @pdev must have the same hardreset
- * line linked to them for this to work.  Passes along the return
- * value of omap_hwmod_deassert_hardreset() in the event of any
- * failure, or returns 0 upon success.
- */
-int omap_device_deassert_hardreset(struct platform_device *pdev,
-				   const char *name)
-{
-	struct omap_device *od = to_omap_device(pdev);
-	int ret = 0;
-	int i;
-
-	for (i = 0; i < od->hwmods_cnt; i++) {
-		ret = omap_hwmod_deassert_hardreset(od->hwmods[i], name);
-		if (ret)
-			break;
-	}
-
-	return ret;
-}
-
-/**
- * omap_device_align_pm_lat - activate/deactivate device to match wakeup lat lim
- * @od: struct omap_device *
- *
- * When a device's maximum wakeup latency limit changes, call some of
- * the .activate_func or .deactivate_func function pointers in the
- * omap_device's pm_lats array to ensure that the device's maximum
- * wakeup latency is less than or equal to the new latency limit.
- * Intended to be called by OMAP PM code whenever a device's maximum
- * wakeup latency limit changes (e.g., via
- * omap_pm_set_dev_wakeup_lat()).  Returns 0 if nothing needs to be
- * done (e.g., if the omap_device is not currently idle, or if the
- * wakeup latency is already current with the new limit) or passes
- * along the return value of _omap_device_deactivate() or
- * _omap_device_activate().
- */
-int omap_device_align_pm_lat(struct platform_device *pdev,
-			     u32 new_wakeup_lat_limit)
-{
-	int ret = -EINVAL;
-	struct omap_device *od;
-
-	od = to_omap_device(pdev);
-
-	if (new_wakeup_lat_limit == od->dev_wakeup_lat)
-		return 0;
-
-	od->_dev_wakeup_lat_limit = new_wakeup_lat_limit;
-
-	if (od->_state != OMAP_DEVICE_STATE_IDLE)
-		return 0;
-	else if (new_wakeup_lat_limit > od->dev_wakeup_lat)
-		ret = _omap_device_deactivate(od, USE_WAKEUP_LAT);
-	else if (new_wakeup_lat_limit < od->dev_wakeup_lat)
-		ret = _omap_device_activate(od, USE_WAKEUP_LAT);
-
-	return ret;
-}
-
-/**
- * omap_device_get_pwrdm - return the powerdomain * associated with @od
- * @od: struct omap_device *
- *
- * Return the powerdomain associated with the first underlying
- * omap_hwmod for this omap_device.  Intended for use by core OMAP PM
- * code.  Returns NULL on error or a struct powerdomain * upon
- * success.
- */
-struct powerdomain *omap_device_get_pwrdm(struct omap_device *od)
-{
-	/*
-	 * XXX Assumes that all omap_hwmod powerdomains are identical.
-	 * This may not necessarily be true.  There should be a sanity
-	 * check in here to WARN() if any difference appears.
-	 */
-	if (!od->hwmods_cnt)
-		return NULL;
-
-	return omap_hwmod_get_pwrdm(od->hwmods[0]);
-}
-
-/**
- * omap_device_get_mpu_rt_va - return the MPU's virtual addr for the hwmod base
- * @od: struct omap_device *
- *
- * Return the MPU's virtual address for the base of the hwmod, from
- * the ioremap() that the hwmod code does.  Only valid if there is one
- * hwmod associated with this device.  Returns NULL if there are zero
- * or more than one hwmods associated with this omap_device;
- * otherwise, passes along the return value from
- * omap_hwmod_get_mpu_rt_va().
- */
-void __iomem *omap_device_get_rt_va(struct omap_device *od)
-{
-	if (od->hwmods_cnt != 1)
-		return NULL;
-
-	return omap_hwmod_get_mpu_rt_va(od->hwmods[0]);
-}
-
-/**
- * omap_device_get_by_hwmod_name() - convert a hwmod name to
- * device pointer.
- * @oh_name: name of the hwmod device
- *
- * Returns back a struct device * pointer associated with a hwmod
- * device represented by a hwmod_name
- */
-struct device *omap_device_get_by_hwmod_name(const char *oh_name)
-{
-	struct omap_hwmod *oh;
-
-	if (!oh_name) {
-		WARN(1, "%s: no hwmod name!\n", __func__);
-		return ERR_PTR(-EINVAL);
-	}
-
-	oh = omap_hwmod_lookup(oh_name);
-	if (IS_ERR_OR_NULL(oh)) {
-		WARN(1, "%s: no hwmod for %s\n", __func__,
-			oh_name);
-		return ERR_PTR(oh ? PTR_ERR(oh) : -ENODEV);
-	}
-	if (IS_ERR_OR_NULL(oh->od)) {
-		WARN(1, "%s: no omap_device for %s\n", __func__,
-			oh_name);
-		return ERR_PTR(oh->od ? PTR_ERR(oh->od) : -ENODEV);
-	}
-
-	if (IS_ERR_OR_NULL(oh->od->pdev))
-		return ERR_PTR(oh->od->pdev ? PTR_ERR(oh->od->pdev) : -ENODEV);
-
-	return &oh->od->pdev->dev;
-}
-EXPORT_SYMBOL(omap_device_get_by_hwmod_name);
-
-/*
- * Public functions intended for use in omap_device_pm_latency
- * .activate_func and .deactivate_func function pointers
- */
-
-/**
- * omap_device_enable_hwmods - call omap_hwmod_enable() on all hwmods
- * @od: struct omap_device *od
- *
- * Enable all underlying hwmods.  Returns 0.
- */
-int omap_device_enable_hwmods(struct omap_device *od)
-{
-	int i;
-
-	for (i = 0; i < od->hwmods_cnt; i++)
-		omap_hwmod_enable(od->hwmods[i]);
-
-	/* XXX pass along return value here? */
-	return 0;
-}
-
-/**
- * omap_device_idle_hwmods - call omap_hwmod_idle() on all hwmods
- * @od: struct omap_device *od
- *
- * Idle all underlying hwmods.  Returns 0.
- */
-int omap_device_idle_hwmods(struct omap_device *od)
-{
-	int i;
-
-	for (i = 0; i < od->hwmods_cnt; i++)
-		omap_hwmod_idle(od->hwmods[i]);
-
-	/* XXX pass along return value here? */
-	return 0;
-}
-
-/**
- * omap_device_disable_clocks - disable all main and interface clocks
- * @od: struct omap_device *od
- *
- * Disable the main functional clock and interface clock for all of the
- * omap_hwmods associated with the omap_device.  Returns 0.
- */
-int omap_device_disable_clocks(struct omap_device *od)
-{
-	int i;
-
-	for (i = 0; i < od->hwmods_cnt; i++)
-		omap_hwmod_disable_clocks(od->hwmods[i]);
-
-	/* XXX pass along return value here? */
-	return 0;
-}
-
-/**
- * omap_device_enable_clocks - enable all main and interface clocks
- * @od: struct omap_device *od
- *
- * Enable the main functional clock and interface clock for all of the
- * omap_hwmods associated with the omap_device.  Returns 0.
- */
-int omap_device_enable_clocks(struct omap_device *od)
-{
-	int i;
-
-	for (i = 0; i < od->hwmods_cnt; i++)
-		omap_hwmod_enable_clocks(od->hwmods[i]);
-
-	/* XXX pass along return value here? */
-	return 0;
-}
-
-static struct notifier_block platform_nb = {
-	.notifier_call = _omap_device_notifier_call,
-};
-
-static int __init omap_device_init(void)
-{
-	bus_register_notifier(&platform_bus_type, &platform_nb);
-	return 0;
-}
-core_initcall(omap_device_init);
-
-/**
- * omap_device_late_idle - idle devices without drivers
- * @dev: struct device * associated with omap_device
- * @data: unused
- *
- * Check the driver bound status of this device, and idle it
- * if there is no driver attached.
- */
-static int __init omap_device_late_idle(struct device *dev, void *data)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct omap_device *od = to_omap_device(pdev);
-
-	if (!od)
-		return 0;
-
-	/*
-	 * If omap_device state is enabled, but has no driver bound,
-	 * idle it.
-	 */
-	if (od->_driver_status != BUS_NOTIFY_BOUND_DRIVER) {
-		if (od->_state == OMAP_DEVICE_STATE_ENABLED) {
-			dev_warn(dev, "%s: enabled but no driver.  Idling\n",
-				 __func__);
-			omap_device_idle(pdev);
-		}
-	}
-
-	return 0;
-}
-
-static int __init omap_device_late_init(void)
-{
-	bus_for_each_dev(&platform_bus_type, NULL, NULL, omap_device_late_idle);
-	return 0;
-}
-late_initcall(omap_device_late_init);