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 rc
= clk_add_alias(clk_alias
, dev_name(&od
->pdev
->dev
), clk_name
, NULL
);
68 if (rc
== -ENODEV
|| rc
== -ENOMEM
)
69 dev_err(&od
->pdev
->dev
,
70 "clkdev_alloc for %s failed\n", clk_alias
);
72 dev_err(&od
->pdev
->dev
,
73 "clk_get for %s failed\n", clk_name
);
78 * _add_hwmod_clocks_clkdev - Add clkdev entry for hwmod optional clocks
80 * @od: struct omap_device *od
81 * @oh: struct omap_hwmod *oh
83 * For the main clock and every optional clock present per hwmod per
84 * omap_device, this function adds an entry in the clkdev table of the
85 * form <dev-id=dev_name, con-id=role> if it does not exist already.
87 * The function is called from inside omap_device_build_ss(), after
88 * omap_device_register.
90 * This allows drivers to get a pointer to its optional clocks based on its role
91 * by calling clk_get(<dev*>, <role>).
92 * In the case of the main clock, a "fck" alias is used.
96 static void _add_hwmod_clocks_clkdev(struct omap_device
*od
,
97 struct omap_hwmod
*oh
)
101 _add_clkdev(od
, "fck", oh
->main_clk
);
103 for (i
= 0; i
< oh
->opt_clks_cnt
; i
++)
104 _add_clkdev(od
, oh
->opt_clks
[i
].role
, oh
->opt_clks
[i
].clk
);
109 * omap_device_build_from_dt - build an omap_device with multiple hwmods
110 * @pdev_name: name of the platform_device driver to use
111 * @pdev_id: this platform_device's connection ID
112 * @oh: ptr to the single omap_hwmod that backs this omap_device
113 * @pdata: platform_data ptr to associate with the platform_device
114 * @pdata_len: amount of memory pointed to by @pdata
116 * Function for building an omap_device already registered from device-tree
118 * Returns 0 or PTR_ERR() on error.
120 static int omap_device_build_from_dt(struct platform_device
*pdev
)
122 struct omap_hwmod
**hwmods
;
123 struct omap_device
*od
;
124 struct omap_hwmod
*oh
;
125 struct device_node
*node
= pdev
->dev
.of_node
;
127 int oh_cnt
, i
, ret
= 0;
128 bool device_active
= false;
130 oh_cnt
= of_property_count_strings(node
, "ti,hwmods");
132 dev_dbg(&pdev
->dev
, "No 'hwmods' to build omap_device\n");
136 hwmods
= kzalloc(sizeof(struct omap_hwmod
*) * oh_cnt
, GFP_KERNEL
);
142 for (i
= 0; i
< oh_cnt
; i
++) {
143 of_property_read_string_index(node
, "ti,hwmods", i
, &oh_name
);
144 oh
= omap_hwmod_lookup(oh_name
);
146 dev_err(&pdev
->dev
, "Cannot lookup hwmod '%s'\n",
152 if (oh
->flags
& HWMOD_INIT_NO_IDLE
)
153 device_active
= true;
156 od
= omap_device_alloc(pdev
, hwmods
, oh_cnt
);
158 dev_err(&pdev
->dev
, "Cannot allocate omap_device for :%s\n",
164 /* Fix up missing resource names */
165 for (i
= 0; i
< pdev
->num_resources
; i
++) {
166 struct resource
*r
= &pdev
->resource
[i
];
169 r
->name
= dev_name(&pdev
->dev
);
172 dev_pm_domain_set(&pdev
->dev
, &omap_device_pm_domain
);
175 omap_device_enable(pdev
);
176 pm_runtime_set_active(&pdev
->dev
);
182 /* if data/we are at fault.. load up a fail handler */
184 dev_pm_domain_set(&pdev
->dev
, &omap_device_fail_pm_domain
);
189 static int _omap_device_notifier_call(struct notifier_block
*nb
,
190 unsigned long event
, void *dev
)
192 struct platform_device
*pdev
= to_platform_device(dev
);
193 struct omap_device
*od
;
196 case BUS_NOTIFY_DEL_DEVICE
:
197 if (pdev
->archdata
.od
)
198 omap_device_delete(pdev
->archdata
.od
);
200 case BUS_NOTIFY_ADD_DEVICE
:
201 if (pdev
->dev
.of_node
)
202 omap_device_build_from_dt(pdev
);
203 omap_auxdata_legacy_init(dev
);
206 od
= to_omap_device(pdev
);
208 od
->_driver_status
= event
;
215 * _omap_device_enable_hwmods - call omap_hwmod_enable() on all hwmods
216 * @od: struct omap_device *od
218 * Enable all underlying hwmods. Returns 0.
220 static int _omap_device_enable_hwmods(struct omap_device
*od
)
225 for (i
= 0; i
< od
->hwmods_cnt
; i
++)
226 ret
|= omap_hwmod_enable(od
->hwmods
[i
]);
232 * _omap_device_idle_hwmods - call omap_hwmod_idle() on all hwmods
233 * @od: struct omap_device *od
235 * Idle all underlying hwmods. Returns 0.
237 static int _omap_device_idle_hwmods(struct omap_device
*od
)
242 for (i
= 0; i
< od
->hwmods_cnt
; i
++)
243 ret
|= omap_hwmod_idle(od
->hwmods
[i
]);
248 /* Public functions for use by core code */
251 * omap_device_get_context_loss_count - get lost context count
252 * @od: struct omap_device *
254 * Using the primary hwmod, query the context loss count for this
257 * Callers should consider context for this device lost any time this
258 * function returns a value different than the value the caller got
259 * the last time it called this function.
261 * If any hwmods exist for the omap_device assoiated with @pdev,
262 * return the context loss counter for that hwmod, otherwise return
265 int omap_device_get_context_loss_count(struct platform_device
*pdev
)
267 struct omap_device
*od
;
270 od
= to_omap_device(pdev
);
273 ret
= omap_hwmod_get_context_loss_count(od
->hwmods
[0]);
279 * omap_device_count_resources - count number of struct resource entries needed
280 * @od: struct omap_device *
281 * @flags: Type of resources to include when counting (IRQ/DMA/MEM)
283 * Count the number of struct resource entries needed for this
284 * omap_device @od. Used by omap_device_build_ss() to determine how
285 * much memory to allocate before calling
286 * omap_device_fill_resources(). Returns the count.
288 static int omap_device_count_resources(struct omap_device
*od
,
294 for (i
= 0; i
< od
->hwmods_cnt
; i
++)
295 c
+= omap_hwmod_count_resources(od
->hwmods
[i
], flags
);
297 pr_debug("omap_device: %s: counted %d total resources across %d hwmods\n",
298 od
->pdev
->name
, c
, od
->hwmods_cnt
);
304 * omap_device_fill_resources - fill in array of struct resource
305 * @od: struct omap_device *
306 * @res: pointer to an array of struct resource to be filled in
308 * Populate one or more empty struct resource pointed to by @res with
309 * the resource data for this omap_device @od. Used by
310 * omap_device_build_ss() after calling omap_device_count_resources().
311 * Ideally this function would not be needed at all. If omap_device
312 * replaces platform_device, then we can specify our own
313 * get_resource()/ get_irq()/etc functions that use the underlying
314 * omap_hwmod information. Or if platform_device is extended to use
315 * subarchitecture-specific function pointers, the various
316 * platform_device functions can simply call omap_device internal
317 * functions to get device resources. Hacking around the existing
318 * platform_device code wastes memory. Returns 0.
320 static int omap_device_fill_resources(struct omap_device
*od
,
321 struct resource
*res
)
325 for (i
= 0; i
< od
->hwmods_cnt
; i
++) {
326 r
= omap_hwmod_fill_resources(od
->hwmods
[i
], res
);
334 * _od_fill_dma_resources - fill in array of struct resource with dma resources
335 * @od: struct omap_device *
336 * @res: pointer to an array of struct resource to be filled in
338 * Populate one or more empty struct resource pointed to by @res with
339 * the dma resource data for this omap_device @od. Used by
340 * omap_device_alloc() after calling omap_device_count_resources().
342 * Ideally this function would not be needed at all. If we have
343 * mechanism to get dma resources from DT.
347 static int _od_fill_dma_resources(struct omap_device
*od
,
348 struct resource
*res
)
352 for (i
= 0; i
< od
->hwmods_cnt
; i
++) {
353 r
= omap_hwmod_fill_dma_resources(od
->hwmods
[i
], res
);
361 * omap_device_alloc - allocate an omap_device
362 * @pdev: platform_device that will be included in this omap_device
363 * @oh: ptr to the single omap_hwmod that backs this omap_device
364 * @pdata: platform_data ptr to associate with the platform_device
365 * @pdata_len: amount of memory pointed to by @pdata
367 * Convenience function for allocating an omap_device structure and filling
368 * hwmods, and resources.
370 * Returns an struct omap_device pointer or ERR_PTR() on error;
372 struct omap_device
*omap_device_alloc(struct platform_device
*pdev
,
373 struct omap_hwmod
**ohs
, int oh_cnt
)
376 struct omap_device
*od
;
377 struct resource
*res
= NULL
;
379 struct omap_hwmod
**hwmods
;
381 od
= kzalloc(sizeof(struct omap_device
), GFP_KERNEL
);
386 od
->hwmods_cnt
= oh_cnt
;
388 hwmods
= kmemdup(ohs
, sizeof(struct omap_hwmod
*) * oh_cnt
, GFP_KERNEL
);
397 * Here, pdev->num_resources = 0, and we should get all the
398 * resources from hwmod.
401 * OF framework will construct the resource structure (currently
402 * does for MEM & IRQ resource) and we should respect/use these
403 * resources, killing hwmod dependency.
404 * If pdev->num_resources > 0, we assume that MEM & IRQ resources
405 * have been allocated by OF layer already (through DTB).
406 * As preparation for the future we examine the OF provided resources
407 * to see if we have DMA resources provided already. In this case
408 * there is no need to update the resources for the device, we use the
411 * TODO: Once DMA resource is available from OF layer, we should
412 * kill filling any resources from hwmod.
414 if (!pdev
->num_resources
) {
415 /* Count all resources for the device */
416 res_count
= omap_device_count_resources(od
, IORESOURCE_IRQ
|
420 /* Take a look if we already have DMA resource via DT */
421 for (i
= 0; i
< pdev
->num_resources
; i
++) {
422 struct resource
*r
= &pdev
->resource
[i
];
424 /* We have it, no need to touch the resources */
425 if (r
->flags
== IORESOURCE_DMA
)
426 goto have_everything
;
428 /* Count only DMA resources for the device */
429 res_count
= omap_device_count_resources(od
, IORESOURCE_DMA
);
430 /* The device has no DMA resource, no need for update */
432 goto have_everything
;
434 res_count
+= pdev
->num_resources
;
437 /* Allocate resources memory to account for new resources */
438 res
= kzalloc(sizeof(struct resource
) * res_count
, GFP_KERNEL
);
442 if (!pdev
->num_resources
) {
443 dev_dbg(&pdev
->dev
, "%s: using %d resources from hwmod\n",
444 __func__
, res_count
);
445 omap_device_fill_resources(od
, res
);
448 "%s: appending %d DMA resources from hwmod\n",
449 __func__
, res_count
- pdev
->num_resources
);
450 memcpy(res
, pdev
->resource
,
451 sizeof(struct resource
) * pdev
->num_resources
);
452 _od_fill_dma_resources(od
, &res
[pdev
->num_resources
]);
455 ret
= platform_device_add_resources(pdev
, res
, res_count
);
462 pdev
->archdata
.od
= od
;
464 for (i
= 0; i
< oh_cnt
; i
++) {
466 _add_hwmod_clocks_clkdev(od
, hwmods
[i
]);
476 dev_err(&pdev
->dev
, "omap_device: build failed (%d)\n", ret
);
481 void omap_device_delete(struct omap_device
*od
)
486 od
->pdev
->archdata
.od
= NULL
;
492 * omap_device_build - build and register an omap_device with one omap_hwmod
493 * @pdev_name: name of the platform_device driver to use
494 * @pdev_id: this platform_device's connection ID
495 * @oh: ptr to the single omap_hwmod that backs this omap_device
496 * @pdata: platform_data ptr to associate with the platform_device
497 * @pdata_len: amount of memory pointed to by @pdata
499 * Convenience function for building and registering a single
500 * omap_device record, which in turn builds and registers a
501 * platform_device record. See omap_device_build_ss() for more
502 * information. Returns ERR_PTR(-EINVAL) if @oh is NULL; otherwise,
503 * passes along the return value of omap_device_build_ss().
505 struct platform_device __init
*omap_device_build(const char *pdev_name
,
507 struct omap_hwmod
*oh
,
508 void *pdata
, int pdata_len
)
510 struct omap_hwmod
*ohs
[] = { oh
};
513 return ERR_PTR(-EINVAL
);
515 return omap_device_build_ss(pdev_name
, pdev_id
, ohs
, 1, pdata
,
520 * omap_device_build_ss - build and register an omap_device with multiple hwmods
521 * @pdev_name: name of the platform_device driver to use
522 * @pdev_id: this platform_device's connection ID
523 * @oh: ptr to the single omap_hwmod that backs this omap_device
524 * @pdata: platform_data ptr to associate with the platform_device
525 * @pdata_len: amount of memory pointed to by @pdata
527 * Convenience function for building and registering an omap_device
528 * subsystem record. Subsystem records consist of multiple
529 * omap_hwmods. This function in turn builds and registers a
530 * platform_device record. Returns an ERR_PTR() on error, or passes
531 * along the return value of omap_device_register().
533 struct platform_device __init
*omap_device_build_ss(const char *pdev_name
,
535 struct omap_hwmod
**ohs
,
536 int oh_cnt
, void *pdata
,
540 struct platform_device
*pdev
;
541 struct omap_device
*od
;
543 if (!ohs
|| oh_cnt
== 0 || !pdev_name
)
544 return ERR_PTR(-EINVAL
);
546 if (!pdata
&& pdata_len
> 0)
547 return ERR_PTR(-EINVAL
);
549 pdev
= platform_device_alloc(pdev_name
, pdev_id
);
555 /* Set the dev_name early to allow dev_xxx in omap_device_alloc */
557 dev_set_name(&pdev
->dev
, "%s.%d", pdev
->name
, pdev
->id
);
559 dev_set_name(&pdev
->dev
, "%s", pdev
->name
);
561 od
= omap_device_alloc(pdev
, ohs
, oh_cnt
);
565 ret
= platform_device_add_data(pdev
, pdata
, pdata_len
);
569 ret
= omap_device_register(pdev
);
576 omap_device_delete(od
);
578 platform_device_put(pdev
);
581 pr_err("omap_device: %s: build failed (%d)\n", pdev_name
, ret
);
587 static int _od_runtime_suspend(struct device
*dev
)
589 struct platform_device
*pdev
= to_platform_device(dev
);
592 ret
= pm_generic_runtime_suspend(dev
);
596 return omap_device_idle(pdev
);
599 static int _od_runtime_resume(struct device
*dev
)
601 struct platform_device
*pdev
= to_platform_device(dev
);
604 ret
= omap_device_enable(pdev
);
608 return pm_generic_runtime_resume(dev
);
611 static int _od_fail_runtime_suspend(struct device
*dev
)
613 dev_warn(dev
, "%s: FIXME: missing hwmod/omap_dev info\n", __func__
);
617 static int _od_fail_runtime_resume(struct device
*dev
)
619 dev_warn(dev
, "%s: FIXME: missing hwmod/omap_dev info\n", __func__
);
625 #ifdef CONFIG_SUSPEND
626 static int _od_suspend_noirq(struct device
*dev
)
628 struct platform_device
*pdev
= to_platform_device(dev
);
629 struct omap_device
*od
= to_omap_device(pdev
);
632 /* Don't attempt late suspend on a driver that is not bound */
633 if (od
->_driver_status
!= BUS_NOTIFY_BOUND_DRIVER
)
636 ret
= pm_generic_suspend_noirq(dev
);
638 if (!ret
&& !pm_runtime_status_suspended(dev
)) {
639 if (pm_generic_runtime_suspend(dev
) == 0) {
640 pm_runtime_set_suspended(dev
);
641 omap_device_idle(pdev
);
642 od
->flags
|= OMAP_DEVICE_SUSPENDED
;
649 static int _od_resume_noirq(struct device
*dev
)
651 struct platform_device
*pdev
= to_platform_device(dev
);
652 struct omap_device
*od
= to_omap_device(pdev
);
654 if (od
->flags
& OMAP_DEVICE_SUSPENDED
) {
655 od
->flags
&= ~OMAP_DEVICE_SUSPENDED
;
656 omap_device_enable(pdev
);
658 * XXX: we run before core runtime pm has resumed itself. At
659 * this point in time, we just restore the runtime pm state and
660 * considering symmetric operations in resume, we donot expect
661 * to fail. If we failed, something changed in core runtime_pm
662 * framework OR some device driver messed things up, hence, WARN
664 WARN(pm_runtime_set_active(dev
),
665 "Could not set %s runtime state active\n", dev_name(dev
));
666 pm_generic_runtime_resume(dev
);
669 return pm_generic_resume_noirq(dev
);
672 #define _od_suspend_noirq NULL
673 #define _od_resume_noirq NULL
676 struct dev_pm_domain omap_device_fail_pm_domain
= {
678 SET_RUNTIME_PM_OPS(_od_fail_runtime_suspend
,
679 _od_fail_runtime_resume
, NULL
)
683 struct dev_pm_domain omap_device_pm_domain
= {
685 SET_RUNTIME_PM_OPS(_od_runtime_suspend
, _od_runtime_resume
,
687 USE_PLATFORM_PM_SLEEP_OPS
688 SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(_od_suspend_noirq
,
694 * omap_device_register - register an omap_device with one omap_hwmod
695 * @od: struct omap_device * to register
697 * Register the omap_device structure. This currently just calls
698 * platform_device_register() on the underlying platform_device.
699 * Returns the return value of platform_device_register().
701 int omap_device_register(struct platform_device
*pdev
)
703 pr_debug("omap_device: %s: registering\n", pdev
->name
);
705 dev_pm_domain_set(&pdev
->dev
, &omap_device_pm_domain
);
706 return platform_device_add(pdev
);
710 /* Public functions for use by device drivers through struct platform_data */
713 * omap_device_enable - fully activate an omap_device
714 * @od: struct omap_device * to activate
716 * Do whatever is necessary for the hwmods underlying omap_device @od
717 * to be accessible and ready to operate. This generally involves
718 * enabling clocks, setting SYSCONFIG registers; and in the future may
719 * involve remuxing pins. Device drivers should call this function
720 * indirectly via pm_runtime_get*(). Returns -EINVAL if called when
721 * the omap_device is already enabled, or passes along the return
722 * value of _omap_device_enable_hwmods().
724 int omap_device_enable(struct platform_device
*pdev
)
727 struct omap_device
*od
;
729 od
= to_omap_device(pdev
);
731 if (od
->_state
== OMAP_DEVICE_STATE_ENABLED
) {
733 "omap_device: %s() called from invalid state %d\n",
734 __func__
, od
->_state
);
738 ret
= _omap_device_enable_hwmods(od
);
741 od
->_state
= OMAP_DEVICE_STATE_ENABLED
;
747 * omap_device_idle - idle an omap_device
748 * @od: struct omap_device * to idle
750 * Idle omap_device @od. Device drivers call this function indirectly
751 * via pm_runtime_put*(). Returns -EINVAL if the omap_device is not
752 * currently enabled, or passes along the return value of
753 * _omap_device_idle_hwmods().
755 int omap_device_idle(struct platform_device
*pdev
)
758 struct omap_device
*od
;
760 od
= to_omap_device(pdev
);
762 if (od
->_state
!= OMAP_DEVICE_STATE_ENABLED
) {
764 "omap_device: %s() called from invalid state %d\n",
765 __func__
, od
->_state
);
769 ret
= _omap_device_idle_hwmods(od
);
772 od
->_state
= OMAP_DEVICE_STATE_IDLE
;
778 * omap_device_assert_hardreset - set a device's hardreset line
779 * @pdev: struct platform_device * to reset
780 * @name: const char * name of the reset line
782 * Set the hardreset line identified by @name on the IP blocks
783 * associated with the hwmods backing the platform_device @pdev. All
784 * of the hwmods associated with @pdev must have the same hardreset
785 * line linked to them for this to work. Passes along the return value
786 * of omap_hwmod_assert_hardreset() in the event of any failure, or
787 * returns 0 upon success.
789 int omap_device_assert_hardreset(struct platform_device
*pdev
, const char *name
)
791 struct omap_device
*od
= to_omap_device(pdev
);
795 for (i
= 0; i
< od
->hwmods_cnt
; i
++) {
796 ret
= omap_hwmod_assert_hardreset(od
->hwmods
[i
], name
);
805 * omap_device_deassert_hardreset - release a device's hardreset line
806 * @pdev: struct platform_device * to reset
807 * @name: const char * name of the reset line
809 * Release the hardreset line identified by @name on the IP blocks
810 * associated with the hwmods backing the platform_device @pdev. All
811 * of the hwmods associated with @pdev must have the same hardreset
812 * line linked to them for this to work. Passes along the return
813 * value of omap_hwmod_deassert_hardreset() in the event of any
814 * failure, or returns 0 upon success.
816 int omap_device_deassert_hardreset(struct platform_device
*pdev
,
819 struct omap_device
*od
= to_omap_device(pdev
);
823 for (i
= 0; i
< od
->hwmods_cnt
; i
++) {
824 ret
= omap_hwmod_deassert_hardreset(od
->hwmods
[i
], name
);
833 * omap_device_get_by_hwmod_name() - convert a hwmod name to
835 * @oh_name: name of the hwmod device
837 * Returns back a struct device * pointer associated with a hwmod
838 * device represented by a hwmod_name
840 struct device
*omap_device_get_by_hwmod_name(const char *oh_name
)
842 struct omap_hwmod
*oh
;
845 WARN(1, "%s: no hwmod name!\n", __func__
);
846 return ERR_PTR(-EINVAL
);
849 oh
= omap_hwmod_lookup(oh_name
);
851 WARN(1, "%s: no hwmod for %s\n", __func__
,
853 return ERR_PTR(-ENODEV
);
856 WARN(1, "%s: no omap_device for %s\n", __func__
,
858 return ERR_PTR(-ENODEV
);
861 return &oh
->od
->pdev
->dev
;
864 static struct notifier_block platform_nb
= {
865 .notifier_call
= _omap_device_notifier_call
,
868 static int __init
omap_device_init(void)
870 bus_register_notifier(&platform_bus_type
, &platform_nb
);
873 omap_postcore_initcall(omap_device_init
);
876 * omap_device_late_idle - idle devices without drivers
877 * @dev: struct device * associated with omap_device
880 * Check the driver bound status of this device, and idle it
881 * if there is no driver attached.
883 static int __init
omap_device_late_idle(struct device
*dev
, void *data
)
885 struct platform_device
*pdev
= to_platform_device(dev
);
886 struct omap_device
*od
= to_omap_device(pdev
);
893 * If omap_device state is enabled, but has no driver bound,
898 * Some devices (like memory controllers) are always kept
899 * enabled, and should not be idled even with no drivers.
901 for (i
= 0; i
< od
->hwmods_cnt
; i
++)
902 if (od
->hwmods
[i
]->flags
& HWMOD_INIT_NO_IDLE
)
905 if (od
->_driver_status
!= BUS_NOTIFY_BOUND_DRIVER
&&
906 od
->_driver_status
!= BUS_NOTIFY_BIND_DRIVER
) {
907 if (od
->_state
== OMAP_DEVICE_STATE_ENABLED
) {
908 dev_warn(dev
, "%s: enabled but no driver. Idling\n",
910 omap_device_idle(pdev
);
917 static int __init
omap_device_late_init(void)
919 bus_for_each_dev(&platform_bus_type
, NULL
, NULL
, omap_device_late_idle
);
921 WARN(!of_have_populated_dt(),
922 "legacy booting deprecated, please update to boot with .dts\n");
926 omap_late_initcall_sync(omap_device_late_init
);