2 * omap_device implementation
4 * Copyright (C) 2009-2010 Nokia Corporation
5 * Paul Walmsley, Kevin Hilman
7 * Developed in collaboration with (alphabetical order): Benoit
8 * Cousson, Thara Gopinath, Tony Lindgren, Rajendra Nayak, Vikram
9 * Pandita, Sakari Poussa, Anand Sawant, Santosh Shilimkar, Richard
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
16 * This code provides a consistent interface for OMAP device drivers
17 * to control power management and interconnect properties of their
20 * In the medium- to long-term, this code should be implemented as a
21 * proper omap_bus/omap_device in Linux, no more platform_data func
28 #include <linux/kernel.h>
29 #include <linux/platform_device.h>
30 #include <linux/slab.h>
31 #include <linux/err.h>
33 #include <linux/clk.h>
34 #include <linux/clkdev.h>
35 #include <linux/pm_domain.h>
36 #include <linux/pm_runtime.h>
38 #include <linux/notifier.h>
42 #include "omap_device.h"
43 #include "omap_hwmod.h"
45 /* Private functions */
47 static void _add_clkdev(struct omap_device *od, const char *clk_alias,
53 if (!clk_alias || !clk_name)
56 dev_dbg(&od->pdev->dev, "Creating %s -> %s\n", clk_alias, clk_name);
58 r = clk_get_sys(dev_name(&od->pdev->dev), clk_alias);
60 dev_dbg(&od->pdev->dev,
61 "alias %s already exists\n", clk_alias);
66 r = clk_get_sys(NULL, clk_name);
68 if (IS_ERR(r) && of_have_populated_dt()) {
69 struct of_phandle_args clkspec;
71 clkspec.np = of_find_node_by_name(NULL, clk_name);
73 r = of_clk_get_from_provider(&clkspec);
75 rc = clk_register_clkdev(r, clk_alias,
76 dev_name(&od->pdev->dev));
78 rc = clk_add_alias(clk_alias, dev_name(&od->pdev->dev),
83 if (rc == -ENODEV || rc == -ENOMEM)
84 dev_err(&od->pdev->dev,
85 "clkdev_alloc for %s failed\n", clk_alias);
87 dev_err(&od->pdev->dev,
88 "clk_get for %s failed\n", clk_name);
93 * _add_hwmod_clocks_clkdev - Add clkdev entry for hwmod optional clocks
95 * @od: struct omap_device *od
96 * @oh: struct omap_hwmod *oh
98 * For the main clock and every optional clock present per hwmod per
99 * omap_device, this function adds an entry in the clkdev table of the
100 * form <dev-id=dev_name, con-id=role> if it does not exist already.
102 * The function is called from inside omap_device_build_ss(), after
103 * omap_device_register.
105 * This allows drivers to get a pointer to its optional clocks based on its role
106 * by calling clk_get(<dev*>, <role>).
107 * In the case of the main clock, a "fck" alias is used.
111 static void _add_hwmod_clocks_clkdev(struct omap_device *od,
112 struct omap_hwmod *oh)
116 _add_clkdev(od, "fck", oh->main_clk);
118 for (i = 0; i < oh->opt_clks_cnt; i++)
119 _add_clkdev(od, oh->opt_clks[i].role, oh->opt_clks[i].clk);
124 * omap_device_build_from_dt - build an omap_device with multiple hwmods
125 * @pdev_name: name of the platform_device driver to use
126 * @pdev_id: this platform_device's connection ID
127 * @oh: ptr to the single omap_hwmod that backs this omap_device
128 * @pdata: platform_data ptr to associate with the platform_device
129 * @pdata_len: amount of memory pointed to by @pdata
131 * Function for building an omap_device already registered from device-tree
133 * Returns 0 or PTR_ERR() on error.
135 static int omap_device_build_from_dt(struct platform_device *pdev)
137 struct omap_hwmod **hwmods;
138 struct omap_device *od;
139 struct omap_hwmod *oh;
140 struct device_node *node = pdev->dev.of_node;
142 int oh_cnt, i, ret = 0;
143 bool device_active = false;
145 oh_cnt = of_property_count_strings(node, "ti,hwmods");
147 dev_dbg(&pdev->dev, "No 'hwmods' to build omap_device\n");
151 hwmods = kzalloc(sizeof(struct omap_hwmod *) * oh_cnt, GFP_KERNEL);
157 for (i = 0; i < oh_cnt; i++) {
158 of_property_read_string_index(node, "ti,hwmods", i, &oh_name);
159 oh = omap_hwmod_lookup(oh_name);
161 dev_err(&pdev->dev, "Cannot lookup hwmod '%s'\n",
167 if (oh->flags & HWMOD_INIT_NO_IDLE)
168 device_active = true;
171 od = omap_device_alloc(pdev, hwmods, oh_cnt);
173 dev_err(&pdev->dev, "Cannot allocate omap_device for :%s\n",
179 /* Fix up missing resource names */
180 for (i = 0; i < pdev->num_resources; i++) {
181 struct resource *r = &pdev->resource[i];
184 r->name = dev_name(&pdev->dev);
187 dev_pm_domain_set(&pdev->dev, &omap_device_pm_domain);
190 omap_device_enable(pdev);
191 pm_runtime_set_active(&pdev->dev);
197 /* if data/we are at fault.. load up a fail handler */
199 dev_pm_domain_set(&pdev->dev, &omap_device_fail_pm_domain);
204 static int _omap_device_notifier_call(struct notifier_block *nb,
205 unsigned long event, void *dev)
207 struct platform_device *pdev = to_platform_device(dev);
208 struct omap_device *od;
212 case BUS_NOTIFY_REMOVED_DEVICE:
213 if (pdev->archdata.od)
214 omap_device_delete(pdev->archdata.od);
216 case BUS_NOTIFY_UNBOUND_DRIVER:
217 od = to_omap_device(pdev);
218 if (od && (od->_state == OMAP_DEVICE_STATE_ENABLED)) {
219 dev_info(dev, "enabled after unload, idling\n");
220 err = omap_device_idle(pdev);
222 dev_err(dev, "failed to idle\n");
225 case BUS_NOTIFY_BIND_DRIVER:
226 od = to_omap_device(pdev);
228 od->_driver_status = BUS_NOTIFY_BIND_DRIVER;
229 if (od->_state == OMAP_DEVICE_STATE_ENABLED &&
230 pm_runtime_status_suspended(dev)) {
231 pm_runtime_set_active(dev);
235 case BUS_NOTIFY_ADD_DEVICE:
236 if (pdev->dev.of_node)
237 omap_device_build_from_dt(pdev);
238 omap_auxdata_legacy_init(dev);
241 od = to_omap_device(pdev);
243 od->_driver_status = event;
250 * _omap_device_enable_hwmods - call omap_hwmod_enable() on all hwmods
251 * @od: struct omap_device *od
253 * Enable all underlying hwmods. Returns 0.
255 static int _omap_device_enable_hwmods(struct omap_device *od)
260 for (i = 0; i < od->hwmods_cnt; i++)
261 ret |= omap_hwmod_enable(od->hwmods[i]);
267 * _omap_device_idle_hwmods - call omap_hwmod_idle() on all hwmods
268 * @od: struct omap_device *od
270 * Idle all underlying hwmods. Returns 0.
272 static int _omap_device_idle_hwmods(struct omap_device *od)
277 for (i = 0; i < od->hwmods_cnt; i++)
278 ret |= omap_hwmod_idle(od->hwmods[i]);
283 /* Public functions for use by core code */
286 * omap_device_get_context_loss_count - get lost context count
287 * @od: struct omap_device *
289 * Using the primary hwmod, query the context loss count for this
292 * Callers should consider context for this device lost any time this
293 * function returns a value different than the value the caller got
294 * the last time it called this function.
296 * If any hwmods exist for the omap_device associated with @pdev,
297 * return the context loss counter for that hwmod, otherwise return
300 int omap_device_get_context_loss_count(struct platform_device *pdev)
302 struct omap_device *od;
305 od = to_omap_device(pdev);
308 ret = omap_hwmod_get_context_loss_count(od->hwmods[0]);
314 * omap_device_count_resources - count number of struct resource entries needed
315 * @od: struct omap_device *
316 * @flags: Type of resources to include when counting (IRQ/DMA/MEM)
318 * Count the number of struct resource entries needed for this
319 * omap_device @od. Used by omap_device_build_ss() to determine how
320 * much memory to allocate before calling
321 * omap_device_fill_resources(). Returns the count.
323 static int omap_device_count_resources(struct omap_device *od,
329 for (i = 0; i < od->hwmods_cnt; i++)
330 c += omap_hwmod_count_resources(od->hwmods[i], flags);
332 pr_debug("omap_device: %s: counted %d total resources across %d hwmods\n",
333 od->pdev->name, c, od->hwmods_cnt);
339 * omap_device_fill_resources - fill in array of struct resource
340 * @od: struct omap_device *
341 * @res: pointer to an array of struct resource to be filled in
343 * Populate one or more empty struct resource pointed to by @res with
344 * the resource data for this omap_device @od. Used by
345 * omap_device_build_ss() after calling omap_device_count_resources().
346 * Ideally this function would not be needed at all. If omap_device
347 * replaces platform_device, then we can specify our own
348 * get_resource()/ get_irq()/etc functions that use the underlying
349 * omap_hwmod information. Or if platform_device is extended to use
350 * subarchitecture-specific function pointers, the various
351 * platform_device functions can simply call omap_device internal
352 * functions to get device resources. Hacking around the existing
353 * platform_device code wastes memory. Returns 0.
355 static int omap_device_fill_resources(struct omap_device *od,
356 struct resource *res)
360 for (i = 0; i < od->hwmods_cnt; i++) {
361 r = omap_hwmod_fill_resources(od->hwmods[i], res);
369 * _od_fill_dma_resources - fill in array of struct resource with dma resources
370 * @od: struct omap_device *
371 * @res: pointer to an array of struct resource to be filled in
373 * Populate one or more empty struct resource pointed to by @res with
374 * the dma resource data for this omap_device @od. Used by
375 * omap_device_alloc() after calling omap_device_count_resources().
377 * Ideally this function would not be needed at all. If we have
378 * mechanism to get dma resources from DT.
382 static int _od_fill_dma_resources(struct omap_device *od,
383 struct resource *res)
387 for (i = 0; i < od->hwmods_cnt; i++) {
388 r = omap_hwmod_fill_dma_resources(od->hwmods[i], res);
396 * omap_device_alloc - allocate an omap_device
397 * @pdev: platform_device that will be included in this omap_device
398 * @oh: ptr to the single omap_hwmod that backs this omap_device
399 * @pdata: platform_data ptr to associate with the platform_device
400 * @pdata_len: amount of memory pointed to by @pdata
402 * Convenience function for allocating an omap_device structure and filling
403 * hwmods, and resources.
405 * Returns an struct omap_device pointer or ERR_PTR() on error;
407 struct omap_device *omap_device_alloc(struct platform_device *pdev,
408 struct omap_hwmod **ohs, int oh_cnt)
411 struct omap_device *od;
412 struct resource *res = NULL;
414 struct omap_hwmod **hwmods;
416 od = kzalloc(sizeof(struct omap_device), GFP_KERNEL);
421 od->hwmods_cnt = oh_cnt;
423 hwmods = kmemdup(ohs, sizeof(struct omap_hwmod *) * oh_cnt, GFP_KERNEL);
432 * Here, pdev->num_resources = 0, and we should get all the
433 * resources from hwmod.
436 * OF framework will construct the resource structure (currently
437 * does for MEM & IRQ resource) and we should respect/use these
438 * resources, killing hwmod dependency.
439 * If pdev->num_resources > 0, we assume that MEM & IRQ resources
440 * have been allocated by OF layer already (through DTB).
441 * As preparation for the future we examine the OF provided resources
442 * to see if we have DMA resources provided already. In this case
443 * there is no need to update the resources for the device, we use the
446 * TODO: Once DMA resource is available from OF layer, we should
447 * kill filling any resources from hwmod.
449 if (!pdev->num_resources) {
450 /* Count all resources for the device */
451 res_count = omap_device_count_resources(od, IORESOURCE_IRQ |
455 /* Take a look if we already have DMA resource via DT */
456 for (i = 0; i < pdev->num_resources; i++) {
457 struct resource *r = &pdev->resource[i];
459 /* We have it, no need to touch the resources */
460 if (r->flags == IORESOURCE_DMA)
461 goto have_everything;
463 /* Count only DMA resources for the device */
464 res_count = omap_device_count_resources(od, IORESOURCE_DMA);
465 /* The device has no DMA resource, no need for update */
467 goto have_everything;
469 res_count += pdev->num_resources;
472 /* Allocate resources memory to account for new resources */
473 res = kzalloc(sizeof(struct resource) * res_count, GFP_KERNEL);
477 if (!pdev->num_resources) {
478 dev_dbg(&pdev->dev, "%s: using %d resources from hwmod\n",
479 __func__, res_count);
480 omap_device_fill_resources(od, res);
483 "%s: appending %d DMA resources from hwmod\n",
484 __func__, res_count - pdev->num_resources);
485 memcpy(res, pdev->resource,
486 sizeof(struct resource) * pdev->num_resources);
487 _od_fill_dma_resources(od, &res[pdev->num_resources]);
490 ret = platform_device_add_resources(pdev, res, res_count);
497 pdev->archdata.od = od;
499 for (i = 0; i < oh_cnt; i++) {
501 _add_hwmod_clocks_clkdev(od, hwmods[i]);
511 dev_err(&pdev->dev, "omap_device: build failed (%d)\n", ret);
516 void omap_device_delete(struct omap_device *od)
521 od->pdev->archdata.od = NULL;
527 * omap_device_build - build and register an omap_device with one omap_hwmod
528 * @pdev_name: name of the platform_device driver to use
529 * @pdev_id: this platform_device's connection ID
530 * @oh: ptr to the single omap_hwmod that backs this omap_device
531 * @pdata: platform_data ptr to associate with the platform_device
532 * @pdata_len: amount of memory pointed to by @pdata
534 * Convenience function for building and registering a single
535 * omap_device record, which in turn builds and registers a
536 * platform_device record. See omap_device_build_ss() for more
537 * information. Returns ERR_PTR(-EINVAL) if @oh is NULL; otherwise,
538 * passes along the return value of omap_device_build_ss().
540 struct platform_device __init *omap_device_build(const char *pdev_name,
542 struct omap_hwmod *oh,
543 void *pdata, int pdata_len)
545 struct omap_hwmod *ohs[] = { oh };
548 return ERR_PTR(-EINVAL);
550 return omap_device_build_ss(pdev_name, pdev_id, ohs, 1, pdata,
555 * omap_device_build_ss - build and register an omap_device with multiple hwmods
556 * @pdev_name: name of the platform_device driver to use
557 * @pdev_id: this platform_device's connection ID
558 * @oh: ptr to the single omap_hwmod that backs this omap_device
559 * @pdata: platform_data ptr to associate with the platform_device
560 * @pdata_len: amount of memory pointed to by @pdata
562 * Convenience function for building and registering an omap_device
563 * subsystem record. Subsystem records consist of multiple
564 * omap_hwmods. This function in turn builds and registers a
565 * platform_device record. Returns an ERR_PTR() on error, or passes
566 * along the return value of omap_device_register().
568 struct platform_device __init *omap_device_build_ss(const char *pdev_name,
570 struct omap_hwmod **ohs,
571 int oh_cnt, void *pdata,
575 struct platform_device *pdev;
576 struct omap_device *od;
578 if (!ohs || oh_cnt == 0 || !pdev_name)
579 return ERR_PTR(-EINVAL);
581 if (!pdata && pdata_len > 0)
582 return ERR_PTR(-EINVAL);
584 pdev = platform_device_alloc(pdev_name, pdev_id);
590 /* Set the dev_name early to allow dev_xxx in omap_device_alloc */
592 dev_set_name(&pdev->dev, "%s.%d", pdev->name, pdev->id);
594 dev_set_name(&pdev->dev, "%s", pdev->name);
596 od = omap_device_alloc(pdev, ohs, oh_cnt);
600 ret = platform_device_add_data(pdev, pdata, pdata_len);
604 ret = omap_device_register(pdev);
611 omap_device_delete(od);
613 platform_device_put(pdev);
616 pr_err("omap_device: %s: build failed (%d)\n", pdev_name, ret);
622 static int _od_runtime_suspend(struct device *dev)
624 struct platform_device *pdev = to_platform_device(dev);
627 ret = pm_generic_runtime_suspend(dev);
631 return omap_device_idle(pdev);
634 static int _od_runtime_resume(struct device *dev)
636 struct platform_device *pdev = to_platform_device(dev);
639 ret = omap_device_enable(pdev);
641 dev_err(dev, "use pm_runtime_put_sync_suspend() in driver?\n");
645 return pm_generic_runtime_resume(dev);
648 static int _od_fail_runtime_suspend(struct device *dev)
650 dev_warn(dev, "%s: FIXME: missing hwmod/omap_dev info\n", __func__);
654 static int _od_fail_runtime_resume(struct device *dev)
656 dev_warn(dev, "%s: FIXME: missing hwmod/omap_dev info\n", __func__);
662 #ifdef CONFIG_SUSPEND
663 static int _od_suspend_noirq(struct device *dev)
665 struct platform_device *pdev = to_platform_device(dev);
666 struct omap_device *od = to_omap_device(pdev);
669 /* Don't attempt late suspend on a driver that is not bound */
670 if (od->_driver_status != BUS_NOTIFY_BOUND_DRIVER)
673 ret = pm_generic_suspend_noirq(dev);
675 if (!ret && !pm_runtime_status_suspended(dev)) {
676 if (pm_generic_runtime_suspend(dev) == 0) {
677 pm_runtime_set_suspended(dev);
678 omap_device_idle(pdev);
679 od->flags |= OMAP_DEVICE_SUSPENDED;
686 static int _od_resume_noirq(struct device *dev)
688 struct platform_device *pdev = to_platform_device(dev);
689 struct omap_device *od = to_omap_device(pdev);
691 if (od->flags & OMAP_DEVICE_SUSPENDED) {
692 od->flags &= ~OMAP_DEVICE_SUSPENDED;
693 omap_device_enable(pdev);
695 * XXX: we run before core runtime pm has resumed itself. At
696 * this point in time, we just restore the runtime pm state and
697 * considering symmetric operations in resume, we donot expect
698 * to fail. If we failed, something changed in core runtime_pm
699 * framework OR some device driver messed things up, hence, WARN
701 WARN(pm_runtime_set_active(dev),
702 "Could not set %s runtime state active\n", dev_name(dev));
703 pm_generic_runtime_resume(dev);
706 return pm_generic_resume_noirq(dev);
709 #define _od_suspend_noirq NULL
710 #define _od_resume_noirq NULL
713 struct dev_pm_domain omap_device_fail_pm_domain = {
715 SET_RUNTIME_PM_OPS(_od_fail_runtime_suspend,
716 _od_fail_runtime_resume, NULL)
720 struct dev_pm_domain omap_device_pm_domain = {
722 SET_RUNTIME_PM_OPS(_od_runtime_suspend, _od_runtime_resume,
724 USE_PLATFORM_PM_SLEEP_OPS
725 SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(_od_suspend_noirq,
731 * omap_device_register - register an omap_device with one omap_hwmod
732 * @od: struct omap_device * to register
734 * Register the omap_device structure. This currently just calls
735 * platform_device_register() on the underlying platform_device.
736 * Returns the return value of platform_device_register().
738 int omap_device_register(struct platform_device *pdev)
740 pr_debug("omap_device: %s: registering\n", pdev->name);
742 dev_pm_domain_set(&pdev->dev, &omap_device_pm_domain);
743 return platform_device_add(pdev);
747 /* Public functions for use by device drivers through struct platform_data */
750 * omap_device_enable - fully activate an omap_device
751 * @od: struct omap_device * to activate
753 * Do whatever is necessary for the hwmods underlying omap_device @od
754 * to be accessible and ready to operate. This generally involves
755 * enabling clocks, setting SYSCONFIG registers; and in the future may
756 * involve remuxing pins. Device drivers should call this function
757 * indirectly via pm_runtime_get*(). Returns -EINVAL if called when
758 * the omap_device is already enabled, or passes along the return
759 * value of _omap_device_enable_hwmods().
761 int omap_device_enable(struct platform_device *pdev)
764 struct omap_device *od;
766 od = to_omap_device(pdev);
768 if (od->_state == OMAP_DEVICE_STATE_ENABLED) {
770 "omap_device: %s() called from invalid state %d\n",
771 __func__, od->_state);
775 ret = _omap_device_enable_hwmods(od);
778 od->_state = OMAP_DEVICE_STATE_ENABLED;
784 * omap_device_idle - idle an omap_device
785 * @od: struct omap_device * to idle
787 * Idle omap_device @od. Device drivers call this function indirectly
788 * via pm_runtime_put*(). Returns -EINVAL if the omap_device is not
789 * currently enabled, or passes along the return value of
790 * _omap_device_idle_hwmods().
792 int omap_device_idle(struct platform_device *pdev)
795 struct omap_device *od;
797 od = to_omap_device(pdev);
799 if (od->_state != OMAP_DEVICE_STATE_ENABLED) {
801 "omap_device: %s() called from invalid state %d\n",
802 __func__, od->_state);
806 ret = _omap_device_idle_hwmods(od);
809 od->_state = OMAP_DEVICE_STATE_IDLE;
815 * omap_device_assert_hardreset - set a device's hardreset line
816 * @pdev: struct platform_device * to reset
817 * @name: const char * name of the reset line
819 * Set the hardreset line identified by @name on the IP blocks
820 * associated with the hwmods backing the platform_device @pdev. All
821 * of the hwmods associated with @pdev must have the same hardreset
822 * line linked to them for this to work. Passes along the return value
823 * of omap_hwmod_assert_hardreset() in the event of any failure, or
824 * returns 0 upon success.
826 int omap_device_assert_hardreset(struct platform_device *pdev, const char *name)
828 struct omap_device *od = to_omap_device(pdev);
832 for (i = 0; i < od->hwmods_cnt; i++) {
833 ret = omap_hwmod_assert_hardreset(od->hwmods[i], name);
842 * omap_device_deassert_hardreset - release a device's hardreset line
843 * @pdev: struct platform_device * to reset
844 * @name: const char * name of the reset line
846 * Release the hardreset line identified by @name on the IP blocks
847 * associated with the hwmods backing the platform_device @pdev. All
848 * of the hwmods associated with @pdev must have the same hardreset
849 * line linked to them for this to work. Passes along the return
850 * value of omap_hwmod_deassert_hardreset() in the event of any
851 * failure, or returns 0 upon success.
853 int omap_device_deassert_hardreset(struct platform_device *pdev,
856 struct omap_device *od = to_omap_device(pdev);
860 for (i = 0; i < od->hwmods_cnt; i++) {
861 ret = omap_hwmod_deassert_hardreset(od->hwmods[i], name);
870 * omap_device_get_by_hwmod_name() - convert a hwmod name to
872 * @oh_name: name of the hwmod device
874 * Returns back a struct device * pointer associated with a hwmod
875 * device represented by a hwmod_name
877 struct device *omap_device_get_by_hwmod_name(const char *oh_name)
879 struct omap_hwmod *oh;
882 WARN(1, "%s: no hwmod name!\n", __func__);
883 return ERR_PTR(-EINVAL);
886 oh = omap_hwmod_lookup(oh_name);
888 WARN(1, "%s: no hwmod for %s\n", __func__,
890 return ERR_PTR(-ENODEV);
893 WARN(1, "%s: no omap_device for %s\n", __func__,
895 return ERR_PTR(-ENODEV);
898 return &oh->od->pdev->dev;
901 static struct notifier_block platform_nb = {
902 .notifier_call = _omap_device_notifier_call,
905 static int __init omap_device_init(void)
907 bus_register_notifier(&platform_bus_type, &platform_nb);
910 omap_postcore_initcall(omap_device_init);
913 * omap_device_late_idle - idle devices without drivers
914 * @dev: struct device * associated with omap_device
917 * Check the driver bound status of this device, and idle it
918 * if there is no driver attached.
920 static int __init omap_device_late_idle(struct device *dev, void *data)
922 struct platform_device *pdev = to_platform_device(dev);
923 struct omap_device *od = to_omap_device(pdev);
930 * If omap_device state is enabled, but has no driver bound,
935 * Some devices (like memory controllers) are always kept
936 * enabled, and should not be idled even with no drivers.
938 for (i = 0; i < od->hwmods_cnt; i++)
939 if (od->hwmods[i]->flags & HWMOD_INIT_NO_IDLE)
942 if (od->_driver_status != BUS_NOTIFY_BOUND_DRIVER &&
943 od->_driver_status != BUS_NOTIFY_BIND_DRIVER) {
944 if (od->_state == OMAP_DEVICE_STATE_ENABLED) {
945 dev_warn(dev, "%s: enabled but no driver. Idling\n",
947 omap_device_idle(pdev);
954 static int __init omap_device_late_init(void)
956 bus_for_each_dev(&platform_bus_type, NULL, NULL, omap_device_late_idle);
958 WARN(!of_have_populated_dt(),
959 "legacy booting deprecated, please update to boot with .dts\n");
963 omap_late_initcall_sync(omap_device_late_init);