kernel: update stmmac ethernet driver from latest linux-sh4-2.6.32.y - _stm24_0217
This commit is contained in:
Jaroslav Kysela
234
kernel/drivers/net/stmmac/stmmac_platform.c
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234
kernel/drivers/net/stmmac/stmmac_platform.c
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/*******************************************************************************
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This contains the functions to handle the platform driver.
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Copyright (C) 2007-2011 STMicroelectronics Ltd
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
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*******************************************************************************/
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include "stmmac.h"
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/**
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* stmmac_pltfr_probe
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* @pdev: platform device pointer
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* Description: platform_device probe function. It allocates
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* the necessary resources and invokes the main to init
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* the net device, register the mdio bus etc.
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*/
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static int stmmac_pltfr_probe(struct platform_device *pdev)
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{
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int ret = 0;
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struct resource *res;
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void __iomem *addr = NULL;
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struct stmmac_priv *priv = NULL;
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struct plat_stmmacenet_data *plat_dat;
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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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if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
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pr_err("%s: ERROR: memory allocation failed"
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"cannot get the I/O addr 0x%x\n",
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__func__, (unsigned int)res->start);
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return -EBUSY;
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}
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addr = ioremap(res->start, resource_size(res));
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if (!addr) {
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pr_err("%s: ERROR: memory mapping failed", __func__);
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ret = -ENOMEM;
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goto out_release_region;
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}
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plat_dat = pdev->dev.platform_data;
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/* Custom initialisation (if needed)*/
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if (plat_dat->init) {
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ret = plat_dat->init(pdev);
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if (unlikely(ret))
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goto out_unmap;
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}
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priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
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if (!priv) {
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pr_err("%s: main driver probe failed", __func__);
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goto out_unmap;
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}
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/* Get the MAC information */
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priv->dev->irq = platform_get_irq_byname(pdev, "macirq");
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if (priv->dev->irq == -ENXIO) {
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pr_err("%s: ERROR: MAC IRQ configuration "
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"information not found\n", __func__);
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ret = -ENXIO;
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goto out_unmap;
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}
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/*
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* On some platforms e.g. SPEAr the wake up irq differs from the mac irq
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* The external wake up irq can be passed through the platform code
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* named as "eth_wake_irq"
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*
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* In case the wake up interrupt is not passed from the platform
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* so the driver will continue to use the mac irq (ndev->irq)
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*/
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priv->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
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if (priv->wol_irq == -ENXIO)
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priv->wol_irq = priv->dev->irq;
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priv->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
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platform_set_drvdata(pdev, priv->dev);
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pm_runtime_set_active(&pdev->dev);
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pm_suspend_ignore_children(&pdev->dev, 1);
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pm_runtime_put_noidle(&pdev->dev);
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pm_runtime_enable(&pdev->dev);
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pr_debug("STMMAC platform driver registration completed");
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return 0;
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out_unmap:
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iounmap(addr);
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platform_set_drvdata(pdev, NULL);
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out_release_region:
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release_mem_region(res->start, resource_size(res));
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return ret;
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}
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/**
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* stmmac_pltfr_remove
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* @pdev: platform device pointer
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* Description: this function calls the main to free the net resources
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* and calls the platforms hook and release the resources (e.g. mem).
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*/
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static int stmmac_pltfr_remove(struct platform_device *pdev)
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{
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struct net_device *ndev = platform_get_drvdata(pdev);
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struct stmmac_priv *priv = netdev_priv(ndev);
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struct resource *res;
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int ret = stmmac_dvr_remove(ndev);
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pm_runtime_get_noresume(&pdev->dev);
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pm_runtime_put(&pdev->dev);
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pm_runtime_disable(&pdev->dev);
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if (priv->plat->exit)
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priv->plat->exit(pdev);
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if (priv->plat->exit)
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priv->plat->exit(pdev);
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platform_set_drvdata(pdev, NULL);
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iounmap((void *)priv->ioaddr);
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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release_mem_region(res->start, resource_size(res));
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return ret;
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}
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#ifdef CONFIG_PM
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static int stmmac_pltfr_suspend(struct device *dev)
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{
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struct net_device *ndev = dev_get_drvdata(dev);
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return stmmac_suspend(ndev);
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}
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static int stmmac_pltfr_resume(struct device *dev)
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{
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struct net_device *ndev = dev_get_drvdata(dev);
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return stmmac_resume(ndev);
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}
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int stmmac_pltfr_freeze(struct device *dev)
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{
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struct net_device *ndev = dev_get_drvdata(dev);
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return stmmac_freeze(ndev);
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}
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int stmmac_pltfr_restore(struct device *dev)
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{
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struct net_device *ndev = dev_get_drvdata(dev);
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return stmmac_restore(ndev);
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}
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#if 0
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int stmmac_pltfr_idle(struct device *dev)
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{
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struct net_device *ndev = dev_get_drvdata(dev);
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struct stmmac_priv *priv = netdev_priv(ndev);
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struct phy_device *phydev = priv->phydev;
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#ifdef CONFIG_PM_RUNTIME
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if (!phydev->link)
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pm_schedule_suspend(dev, MSEC_PER_SEC * 5);
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#endif
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return -EBUSY;
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}
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#endif
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SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops, stmmac_pltfr_suspend, stmmac_pltfr_resume);
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#else
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static const struct dev_pm_ops stmmac_pltfr_pm_ops;
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#endif /* CONFIG_PM */
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static struct platform_driver stmmac_driver = {
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.probe = stmmac_pltfr_probe,
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.remove = stmmac_pltfr_remove,
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.driver = {
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.name = STMMAC_RESOURCE_NAME,
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.owner = THIS_MODULE,
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.pm = &stmmac_pltfr_pm_ops,
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},
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};
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/**
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* stmmac_init_module - Entry point for the driver
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* Description: This function is the entry point for the driver.
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*/
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static int __init stmmac_init_module(void)
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{
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return platform_driver_register(&stmmac_driver);
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}
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/**
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* stmmac_cleanup_module - Cleanup routine for the driver
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* Description: This function is the cleanup routine for the driver.
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*/
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static void __exit stmmac_cleanup_module(void)
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{
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platform_driver_unregister(&stmmac_driver);
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}
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module_init(stmmac_init_module);
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module_exit(stmmac_cleanup_module);
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MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
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MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
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MODULE_LICENSE("GPL");
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