diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c new file mode 100644 index 000000000000..1ac83243649a --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -0,0 +1,198 @@ +/******************************************************************************* + This contains the functions to handle the platform driver. + + Copyright (C) 2007-2011 STMicroelectronics Ltd + + This program is free software; you can redistribute it and/or modify it + under the terms and conditions of the GNU General Public License, + version 2, as published by the Free Software Foundation. + + This program is distributed in the hope it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + more details. + + You should have received a copy of the GNU General Public License along with + this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + + The full GNU General Public License is included in this distribution in + the file called "COPYING". + + Author: Giuseppe Cavallaro <peppe.cavallaro@st.com> +*******************************************************************************/ + +#include <linux/platform_device.h> +#include <linux/io.h> +#include "stmmac.h" + +/** + * stmmac_pltfr_probe + * @pdev: platform device pointer + * Description: platform_device probe function. It allocates + * the necessary resources and invokes the main to init + * the net device, register the mdio bus etc. + */ +static int stmmac_pltfr_probe(struct platform_device *pdev) +{ + int ret = 0; + struct resource *res; + void __iomem *addr = NULL; + struct stmmac_priv *priv = NULL; + struct plat_stmmacenet_data *plat_dat; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENODEV; + + if (!request_mem_region(res->start, resource_size(res), pdev->name)) { + pr_err("%s: ERROR: memory allocation failed" + "cannot get the I/O addr 0x%x\n", + __func__, (unsigned int)res->start); + return -EBUSY; + } + + addr = ioremap(res->start, resource_size(res)); + if (!addr) { + pr_err("%s: ERROR: memory mapping failed", __func__); + ret = -ENOMEM; + goto out_release_region; + } + plat_dat = pdev->dev.platform_data; + priv = stmmac_dvr_probe(&(pdev->dev), plat_dat); + if (!priv) { + pr_err("%s: main drivr probe failed", __func__); + goto out_unmap; + } + + priv->ioaddr = addr; + /* Set the I/O base addr */ + priv->dev->base_addr = (unsigned long)addr; + + /* Get the MAC information */ + priv->dev->irq = platform_get_irq_byname(pdev, "macirq"); + if (priv->dev->irq == -ENXIO) { + pr_err("%s: ERROR: MAC IRQ configuration " + "information not found\n", __func__); + ret = -ENXIO; + goto out_unmap; + } + + /* + * On some platforms e.g. SPEAr the wake up irq differs from the mac irq + * The external wake up irq can be passed through the platform code + * named as "eth_wake_irq" + * + * In case the wake up interrupt is not passed from the platform + * so the driver will continue to use the mac irq (ndev->irq) + */ + priv->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq"); + if (priv->wol_irq == -ENXIO) + priv->wol_irq = priv->dev->irq; + + platform_set_drvdata(pdev, priv->dev); + + /* Custom initialisation */ + if (priv->plat->init) { + ret = priv->plat->init(pdev); + if (unlikely(ret)) + goto out_unmap; + } + + pr_debug("STMMAC platform driver registration completed"); + + return 0; + +out_unmap: + iounmap(addr); + platform_set_drvdata(pdev, NULL); + +out_release_region: + release_mem_region(res->start, resource_size(res)); + + return ret; +} + +/** + * stmmac_pltfr_remove + * @pdev: platform device pointer + * Description: this function calls the main to free the net resources + * and calls the platforms hook and release the resources (e.g. mem). + */ +static int stmmac_pltfr_remove(struct platform_device *pdev) +{ + struct net_device *ndev = platform_get_drvdata(pdev); + struct stmmac_priv *priv = netdev_priv(ndev); + struct resource *res; + int ret = stmmac_dvr_remove(ndev); + + if (priv->plat->exit) + priv->plat->exit(pdev); + + if (priv->plat->exit) + priv->plat->exit(pdev); + + platform_set_drvdata(pdev, NULL); + + iounmap((void *)priv->ioaddr); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + release_mem_region(res->start, resource_size(res)); + + return ret; +} + +#ifdef CONFIG_PM +static int stmmac_pltfr_suspend(struct device *dev) +{ + struct net_device *ndev = dev_get_drvdata(dev); + + return stmmac_suspend(ndev); +} + +static int stmmac_pltfr_resume(struct device *dev) +{ + struct net_device *ndev = dev_get_drvdata(dev); + + return stmmac_resume(ndev); +} + +int stmmac_pltfr_freeze(struct device *dev) +{ + struct net_device *ndev = dev_get_drvdata(dev); + + return stmmac_freeze(ndev); +} + +int stmmac_pltfr_restore(struct device *dev) +{ + struct net_device *ndev = dev_get_drvdata(dev); + + return stmmac_restore(ndev); +} + +static const struct dev_pm_ops stmmac_pltfr_pm_ops = { + .suspend = stmmac_pltfr_suspend, + .resume = stmmac_pltfr_resume, + .freeze = stmmac_pltfr_freeze, + .thaw = stmmac_pltfr_restore, + .restore = stmmac_pltfr_restore, +}; +#else +static const struct dev_pm_ops stmmac_pltfr_pm_ops; +#endif /* CONFIG_PM */ + +static struct platform_driver stmmac_driver = { + .probe = stmmac_pltfr_probe, + .remove = stmmac_pltfr_remove, + .driver = { + .name = STMMAC_RESOURCE_NAME, + .owner = THIS_MODULE, + .pm = &stmmac_pltfr_pm_ops, + }, +}; + +module_platform_driver(stmmac_driver); + +MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver"); +MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); +MODULE_LICENSE("GPL"); |