235 lines
6.2 KiB
C
235 lines
6.2 KiB
C
|
/*******************************************************************************
|
||
|
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;
|
||
|
|
||
|
/* Custom initialisation (if needed)*/
|
||
|
if (plat_dat->init) {
|
||
|
ret = plat_dat->init(pdev);
|
||
|
if (unlikely(ret))
|
||
|
goto out_unmap;
|
||
|
}
|
||
|
|
||
|
priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
|
||
|
if (!priv) {
|
||
|
pr_err("%s: main driver probe failed", __func__);
|
||
|
goto out_unmap;
|
||
|
}
|
||
|
|
||
|
/* 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;
|
||
|
|
||
|
priv->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
|
||
|
|
||
|
platform_set_drvdata(pdev, priv->dev);
|
||
|
|
||
|
pm_runtime_set_active(&pdev->dev);
|
||
|
pm_suspend_ignore_children(&pdev->dev, 1);
|
||
|
pm_runtime_put_noidle(&pdev->dev);
|
||
|
pm_runtime_enable(&pdev->dev);
|
||
|
|
||
|
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);
|
||
|
|
||
|
pm_runtime_get_noresume(&pdev->dev);
|
||
|
pm_runtime_put(&pdev->dev);
|
||
|
pm_runtime_disable(&pdev->dev);
|
||
|
|
||
|
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);
|
||
|
}
|
||
|
|
||
|
#if 0
|
||
|
int stmmac_pltfr_idle(struct device *dev)
|
||
|
{
|
||
|
struct net_device *ndev = dev_get_drvdata(dev);
|
||
|
struct stmmac_priv *priv = netdev_priv(ndev);
|
||
|
struct phy_device *phydev = priv->phydev;
|
||
|
|
||
|
#ifdef CONFIG_PM_RUNTIME
|
||
|
if (!phydev->link)
|
||
|
pm_schedule_suspend(dev, MSEC_PER_SEC * 5);
|
||
|
#endif
|
||
|
return -EBUSY;
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops, stmmac_pltfr_suspend, stmmac_pltfr_resume);
|
||
|
#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,
|
||
|
},
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* stmmac_init_module - Entry point for the driver
|
||
|
* Description: This function is the entry point for the driver.
|
||
|
*/
|
||
|
static int __init stmmac_init_module(void)
|
||
|
{
|
||
|
return platform_driver_register(&stmmac_driver);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* stmmac_cleanup_module - Cleanup routine for the driver
|
||
|
* Description: This function is the cleanup routine for the driver.
|
||
|
*/
|
||
|
static void __exit stmmac_cleanup_module(void)
|
||
|
{
|
||
|
platform_driver_unregister(&stmmac_driver);
|
||
|
}
|
||
|
|
||
|
module_init(stmmac_init_module);
|
||
|
module_exit(stmmac_cleanup_module);
|
||
|
|
||
|
MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
|
||
|
MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
|
||
|
MODULE_LICENSE("GPL");
|