1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright (C) 2010-2015 Texas Instruments Incorporated - http://www.ti.com
8  *          Hari Kanigeri <h-kanigeri2@ti.com>
9  *          Ohad Ben-Cohen <ohad@wizery.com>
39 	void __iomem *lock_addr = lock->priv;  in omap_hwspinlock_trylock()
47 	void __iomem *lock_addr = lock->priv;  in omap_hwspinlock_unlock()
60  * The number below is taken from an hardware specs example,
76 	struct device_node *node = pdev->dev.of_node;  in omap_hwspinlock_probe()
77 	struct hwspinlock_device *bank;  in omap_hwspinlock_probe()  local
86 		return -ENODEV;  in omap_hwspinlock_probe()
90 		return -ENODEV;  in omap_hwspinlock_probe()
92 	io_base = ioremap(res->start, resource_size(res));  in omap_hwspinlock_probe()
94 		return -ENOMEM;  in omap_hwspinlock_probe()
100 	pm_runtime_enable(&pdev->dev);  in omap_hwspinlock_probe()
101 	ret = pm_runtime_get_sync(&pdev->dev);  in omap_hwspinlock_probe()
103 		pm_runtime_put_noidle(&pdev->dev);  in omap_hwspinlock_probe()
107 	/* Determine number of locks */  in omap_hwspinlock_probe()
115 	ret = pm_runtime_put(&pdev->dev);  in omap_hwspinlock_probe()
121 		ret = -EINVAL;  in omap_hwspinlock_probe()
125 	num_locks = i * 32; /* actual number of locks in this device */  in omap_hwspinlock_probe()
127 	bank = kzalloc(struct_size(bank, lock, num_locks), GFP_KERNEL);  in omap_hwspinlock_probe()
128 	if (!bank) {  in omap_hwspinlock_probe()
129 		ret = -ENOMEM;  in omap_hwspinlock_probe()
133 	platform_set_drvdata(pdev, bank);  in omap_hwspinlock_probe()
135 	for (i = 0, hwlock = &bank->lock[0]; i < num_locks; i++, hwlock++)  in omap_hwspinlock_probe()
136 		hwlock->priv = io_base + LOCK_BASE_OFFSET + sizeof(u32) * i;  in omap_hwspinlock_probe()
138 	ret = hwspin_lock_register(bank, &pdev->dev, &omap_hwspinlock_ops,  in omap_hwspinlock_probe()
146 	kfree(bank);  in omap_hwspinlock_probe()
148 	pm_runtime_disable(&pdev->dev);  in omap_hwspinlock_probe()
155 	struct hwspinlock_device *bank = platform_get_drvdata(pdev);  in omap_hwspinlock_remove()  local
156 	void __iomem *io_base = bank->lock[0].priv - LOCK_BASE_OFFSET;  in omap_hwspinlock_remove()
159 	ret = hwspin_lock_unregister(bank);  in omap_hwspinlock_remove()
161 		dev_err(&pdev->dev, "%s failed: %d\n", __func__, ret);  in omap_hwspinlock_remove()
165 	pm_runtime_disable(&pdev->dev);  in omap_hwspinlock_remove()
167 	kfree(bank);  in omap_hwspinlock_remove()
173 	{ .compatible = "ti,omap4-hwspinlock", },
203 MODULE_AUTHOR("Hari Kanigeri <h-kanigeri2@ti.com>");
204 MODULE_AUTHOR("Ohad Ben-Cohen <ohad@wizery.com>");