154 lines
3.3 KiB
C
154 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
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Copyright (C) 2004 - 2009 Felix Fietkau <nbd@openwrt.org>
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<http://rt2x00.serialmonkey.com>
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*/
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/*
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Module: rt2x00soc
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Abstract: rt2x00 generic soc device routines.
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*/
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#include <linux/bug.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include "rt2x00.h"
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#include "rt2x00soc.h"
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static void rt2x00soc_free_reg(struct rt2x00_dev *rt2x00dev)
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{
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kfree(rt2x00dev->rf);
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rt2x00dev->rf = NULL;
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kfree(rt2x00dev->eeprom);
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rt2x00dev->eeprom = NULL;
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iounmap(rt2x00dev->csr.base);
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}
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static int rt2x00soc_alloc_reg(struct rt2x00_dev *rt2x00dev)
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{
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struct platform_device *pdev = to_platform_device(rt2x00dev->dev);
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struct resource *res;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res)
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return -ENODEV;
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rt2x00dev->csr.base = ioremap(res->start, resource_size(res));
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if (!rt2x00dev->csr.base)
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return -ENOMEM;
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rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
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if (!rt2x00dev->eeprom)
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goto exit;
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rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
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if (!rt2x00dev->rf)
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goto exit;
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return 0;
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exit:
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rt2x00_probe_err("Failed to allocate registers\n");
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rt2x00soc_free_reg(rt2x00dev);
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return -ENOMEM;
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}
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int rt2x00soc_probe(struct platform_device *pdev, const struct rt2x00_ops *ops)
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{
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struct ieee80211_hw *hw;
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struct rt2x00_dev *rt2x00dev;
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int retval;
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hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
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if (!hw) {
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rt2x00_probe_err("Failed to allocate hardware\n");
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return -ENOMEM;
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}
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platform_set_drvdata(pdev, hw);
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rt2x00dev = hw->priv;
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rt2x00dev->dev = &pdev->dev;
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rt2x00dev->ops = ops;
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rt2x00dev->hw = hw;
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rt2x00dev->irq = platform_get_irq(pdev, 0);
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rt2x00dev->name = pdev->dev.driver->name;
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rt2x00dev->clk = clk_get(&pdev->dev, NULL);
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if (IS_ERR(rt2x00dev->clk))
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rt2x00dev->clk = NULL;
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rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
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retval = rt2x00soc_alloc_reg(rt2x00dev);
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if (retval)
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goto exit_free_device;
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retval = rt2x00lib_probe_dev(rt2x00dev);
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if (retval)
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goto exit_free_reg;
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return 0;
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exit_free_reg:
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rt2x00soc_free_reg(rt2x00dev);
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exit_free_device:
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ieee80211_free_hw(hw);
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return retval;
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}
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EXPORT_SYMBOL_GPL(rt2x00soc_probe);
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int rt2x00soc_remove(struct platform_device *pdev)
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{
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struct ieee80211_hw *hw = platform_get_drvdata(pdev);
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struct rt2x00_dev *rt2x00dev = hw->priv;
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/*
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* Free all allocated data.
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*/
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rt2x00lib_remove_dev(rt2x00dev);
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rt2x00soc_free_reg(rt2x00dev);
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ieee80211_free_hw(hw);
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return 0;
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}
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EXPORT_SYMBOL_GPL(rt2x00soc_remove);
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#ifdef CONFIG_PM
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int rt2x00soc_suspend(struct platform_device *pdev, pm_message_t state)
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{
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struct ieee80211_hw *hw = platform_get_drvdata(pdev);
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struct rt2x00_dev *rt2x00dev = hw->priv;
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return rt2x00lib_suspend(rt2x00dev);
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}
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EXPORT_SYMBOL_GPL(rt2x00soc_suspend);
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int rt2x00soc_resume(struct platform_device *pdev)
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{
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struct ieee80211_hw *hw = platform_get_drvdata(pdev);
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struct rt2x00_dev *rt2x00dev = hw->priv;
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return rt2x00lib_resume(rt2x00dev);
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}
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EXPORT_SYMBOL_GPL(rt2x00soc_resume);
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#endif /* CONFIG_PM */
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/*
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* rt2x00soc module information.
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*/
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MODULE_AUTHOR(DRV_PROJECT);
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MODULE_VERSION(DRV_VERSION);
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MODULE_DESCRIPTION("rt2x00 soc library");
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MODULE_LICENSE("GPL");
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