1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2009-2010 Nokia Corporation
13  * This code provides a consistent interface for OMAP device drivers
17  * In the medium- to long-term, this code should be implemented as a
59 	dev_dbg(&od->pdev->dev, "Creating %s -> %s\n", clk_alias, clk_name);  in _add_clkdev()
61 	r = clk_get_sys(dev_name(&od->pdev->dev), clk_alias);  in _add_clkdev()
63 		dev_dbg(&od->pdev->dev,  in _add_clkdev()
79 					 dev_name(&od->pdev->dev));  in _add_clkdev()
81 		rc = clk_add_alias(clk_alias, dev_name(&od->pdev->dev),  in _add_clkdev()
86 		if (rc == -ENODEV || rc == -ENOMEM)  in _add_clkdev()
87 			dev_err(&od->pdev->dev,  in _add_clkdev()
90 			dev_err(&od->pdev->dev,  in _add_clkdev()
96  * _add_hwmod_clocks_clkdev - Add clkdev entry for hwmod optional clocks
103  * form <dev-id=dev_name, con-id=role> if it does not exist already.
116 	_add_clkdev(od, "fck", oh->main_clk);  in _add_hwmod_clocks_clkdev()
118 	for (i = 0; i < oh->opt_clks_cnt; i++)  in _add_hwmod_clocks_clkdev()
119 		_add_clkdev(od, oh->opt_clks[i].role, oh->opt_clks[i].clk);  in _add_hwmod_clocks_clkdev()
124  * omap_device_build_from_dt - build an omap_device with multiple hwmods
127  * Function for building an omap_device already registered from device-tree
136 	struct device_node *node = pdev->dev.of_node;  in omap_device_build_from_dt()
144 		dev_dbg(&pdev->dev, "No 'hwmods' to build omap_device\n");  in omap_device_build_from_dt()
145 		return -ENODEV;  in omap_device_build_from_dt()
148 	/* SDMA still needs special handling for omap_device_build() */  in omap_device_build_from_dt()
154 	/* Use ti-sysc driver instead of omap_device? */  in omap_device_build_from_dt()
157 		return -ENODEV;  in omap_device_build_from_dt()
161 		ret = -ENOMEM;  in omap_device_build_from_dt()
169 			dev_err(&pdev->dev, "Cannot lookup hwmod '%s'\n",  in omap_device_build_from_dt()
171 			ret = -EINVAL;  in omap_device_build_from_dt()
175 		if (oh->flags & HWMOD_INIT_NO_IDLE)  in omap_device_build_from_dt()
181 		dev_err(&pdev->dev, "Cannot allocate omap_device for :%s\n",  in omap_device_build_from_dt()
188 	for (i = 0; i < pdev->num_resources; i++) {  in omap_device_build_from_dt()
189 		struct resource *r = &pdev->resource[i];  in omap_device_build_from_dt()
191 		if (r->name == NULL)  in omap_device_build_from_dt()
192 			r->name = dev_name(&pdev->dev);  in omap_device_build_from_dt()
196 		dev_pm_domain_set(&pdev->dev, &omap_device_pm_domain);  in omap_device_build_from_dt()
199 			pm_runtime_set_active(&pdev->dev);  in omap_device_build_from_dt()
208 		dev_pm_domain_set(&pdev->dev, &omap_device_fail_pm_domain);  in omap_device_build_from_dt()
222 		if (pdev->archdata.od)  in _omap_device_notifier_call()
223 			omap_device_delete(pdev->archdata.od);  in _omap_device_notifier_call()
227 		if (od && (od->_state == OMAP_DEVICE_STATE_ENABLED)) {  in _omap_device_notifier_call()
237 			od->_driver_status = BUS_NOTIFY_BIND_DRIVER;  in _omap_device_notifier_call()
238 			if (od->_state == OMAP_DEVICE_STATE_ENABLED &&  in _omap_device_notifier_call()
245 		if (pdev->dev.of_node)  in _omap_device_notifier_call()
251 			od->_driver_status = event;  in _omap_device_notifier_call()
258  * _omap_device_enable_hwmods - call omap_hwmod_enable() on all hwmods
268 	for (i = 0; i < od->hwmods_cnt; i++)  in _omap_device_enable_hwmods()
269 		ret |= omap_hwmod_enable(od->hwmods[i]);  in _omap_device_enable_hwmods()
275  * _omap_device_idle_hwmods - call omap_hwmod_idle() on all hwmods
285 	for (i = 0; i < od->hwmods_cnt; i++)  in _omap_device_idle_hwmods()
286 		ret |= omap_hwmod_idle(od->hwmods[i]);  in _omap_device_idle_hwmods()
294  * omap_device_alloc - allocate an omap_device
307 	int ret = -ENOMEM;  in omap_device_alloc()
316 	od->hwmods_cnt = oh_cnt;  in omap_device_alloc()
322 	od->hwmods = hwmods;  in omap_device_alloc()
323 	od->pdev = pdev;  in omap_device_alloc()
324 	pdev->archdata.od = od;  in omap_device_alloc()
327 		hwmods[i]->od = od;  in omap_device_alloc()
336 	dev_err(&pdev->dev, "omap_device: build failed (%d)\n", ret);  in omap_device_alloc()
346 	od->pdev->archdata.od = NULL;  in omap_device_delete()
347 	kfree(od->hwmods);  in omap_device_delete()
381 	return -ENODEV;  in _od_fail_runtime_suspend()
387 	return -ENODEV;  in _od_fail_runtime_resume()
400 	if (od->_driver_status != BUS_NOTIFY_BOUND_DRIVER)  in _od_suspend_noirq()
408 			od->flags |= OMAP_DEVICE_SUSPENDED;  in _od_suspend_noirq()
420 	if (od->flags & OMAP_DEVICE_SUSPENDED) {  in _od_resume_noirq()
421 		od->flags &= ~OMAP_DEVICE_SUSPENDED;  in _od_resume_noirq()
453  * omap_device_enable - fully activate an omap_device
460  * indirectly via pm_runtime_get*().  Returns -EINVAL if called when
471 	if (od->_state == OMAP_DEVICE_STATE_ENABLED) {  in omap_device_enable()
472 		dev_warn(&pdev->dev,  in omap_device_enable()
474 			 __func__, od->_state);  in omap_device_enable()
475 		return -EINVAL;  in omap_device_enable()
481 		od->_state = OMAP_DEVICE_STATE_ENABLED;  in omap_device_enable()
487  * omap_device_idle - idle an omap_device
491  * via pm_runtime_put*().  Returns -EINVAL if the omap_device is not
502 	if (od->_state != OMAP_DEVICE_STATE_ENABLED) {  in omap_device_idle()
503 		dev_warn(&pdev->dev,  in omap_device_idle()
505 			 __func__, od->_state);  in omap_device_idle()
506 		return -EINVAL;  in omap_device_idle()
512 		od->_state = OMAP_DEVICE_STATE_IDLE;  in omap_device_idle()
518  * omap_device_assert_hardreset - set a device's hardreset line
535 	for (i = 0; i < od->hwmods_cnt; i++) {  in omap_device_assert_hardreset()
536 		ret = omap_hwmod_assert_hardreset(od->hwmods[i], name);  in omap_device_assert_hardreset()
545  * omap_device_deassert_hardreset - release a device's hardreset line
563 	for (i = 0; i < od->hwmods_cnt; i++) {  in omap_device_deassert_hardreset()
564 		ret = omap_hwmod_deassert_hardreset(od->hwmods[i], name);  in omap_device_deassert_hardreset()
584  * omap_device_late_idle - idle devices without drivers
609 	for (i = 0; i < od->hwmods_cnt; i++)  in omap_device_late_idle()
610 		if (od->hwmods[i]->flags & HWMOD_INIT_NO_IDLE)  in omap_device_late_idle()
613 	if (od->_driver_status != BUS_NOTIFY_BOUND_DRIVER &&  in omap_device_late_idle()
614 	    od->_driver_status != BUS_NOTIFY_BIND_DRIVER) {  in omap_device_late_idle()
615 		if (od->_state == OMAP_DEVICE_STATE_ENABLED) {  in omap_device_late_idle()