5d78d34ba2
Add new library module for SoC drivers. This is needed to fully support the platform driver part of rt2800pci. Based on original patch from Felix. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
160 lines
3.7 KiB
C
160 lines
3.7 KiB
C
/*
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Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
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<http://rt2x00.serialmonkey.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the
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Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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 "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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}
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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 = (void __iomem *)KSEG1ADDR(res->start);
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if (!rt2x00dev->csr.base)
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goto exit;
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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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ERROR_PROBE("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,
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const unsigned short chipset,
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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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ERROR_PROBE("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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rt2x00_set_chip_rt(rt2x00dev, chipset);
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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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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, state);
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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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