1 /*******************************************************************************
2 This contains the functions to handle the platform driver.
4 Copyright (C) 2007-2011 STMicroelectronics Ltd
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
22 Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
23 *******************************************************************************/
25 #include <linux/platform_device.h>
28 #include <linux/of_net.h>
32 static int __devinit stmmac_probe_config_dt(struct platform_device *pdev,
33 struct plat_stmmacenet_data *plat,
36 struct device_node *np = pdev->dev.of_node;
41 *mac = of_get_mac_address(np);
42 plat->interface = of_get_phy_mode(np);
43 plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
44 sizeof(struct stmmac_mdio_bus_data),
48 * Currently only the properties needed on SPEAr600
49 * are provided. All other properties should be added
50 * once needed on other platforms.
52 if (of_device_is_compatible(np, "st,spear600-gmac")) {
60 static int __devinit stmmac_probe_config_dt(struct platform_device *pdev,
61 struct plat_stmmacenet_data *plat,
66 #endif /* CONFIG_OF */
70 * @pdev: platform device pointer
71 * Description: platform_device probe function. It allocates
72 * the necessary resources and invokes the main to init
73 * the net device, register the mdio bus etc.
75 static int stmmac_pltfr_probe(struct platform_device *pdev)
79 void __iomem *addr = NULL;
80 struct stmmac_priv *priv = NULL;
81 struct plat_stmmacenet_data *plat_dat = NULL;
82 const char *mac = NULL;
84 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
88 if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
89 pr_err("%s: ERROR: memory allocation failed"
90 "cannot get the I/O addr 0x%x\n",
91 __func__, (unsigned int)res->start);
95 addr = ioremap(res->start, resource_size(res));
97 pr_err("%s: ERROR: memory mapping failed", __func__);
99 goto out_release_region;
102 if (pdev->dev.of_node) {
103 plat_dat = devm_kzalloc(&pdev->dev,
104 sizeof(struct plat_stmmacenet_data),
107 pr_err("%s: ERROR: no memory", __func__);
112 ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
114 pr_err("%s: main dt probe failed", __func__);
118 plat_dat = pdev->dev.platform_data;
121 /* Custom initialisation (if needed)*/
122 if (plat_dat->init) {
123 ret = plat_dat->init(pdev);
128 priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
130 pr_err("%s: main driver probe failed", __func__);
134 /* Get MAC address if available (DT) */
136 memcpy(priv->dev->dev_addr, mac, ETH_ALEN);
138 /* Get the MAC information */
139 priv->dev->irq = platform_get_irq_byname(pdev, "macirq");
140 if (priv->dev->irq == -ENXIO) {
141 pr_err("%s: ERROR: MAC IRQ configuration "
142 "information not found\n", __func__);
148 * On some platforms e.g. SPEAr the wake up irq differs from the mac irq
149 * The external wake up irq can be passed through the platform code
150 * named as "eth_wake_irq"
152 * In case the wake up interrupt is not passed from the platform
153 * so the driver will continue to use the mac irq (ndev->irq)
155 priv->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
156 if (priv->wol_irq == -ENXIO)
157 priv->wol_irq = priv->dev->irq;
159 platform_set_drvdata(pdev, priv->dev);
161 pr_debug("STMMAC platform driver registration completed");
167 platform_set_drvdata(pdev, NULL);
170 release_mem_region(res->start, resource_size(res));
176 * stmmac_pltfr_remove
177 * @pdev: platform device pointer
178 * Description: this function calls the main to free the net resources
179 * and calls the platforms hook and release the resources (e.g. mem).
181 static int stmmac_pltfr_remove(struct platform_device *pdev)
183 struct net_device *ndev = platform_get_drvdata(pdev);
184 struct stmmac_priv *priv = netdev_priv(ndev);
185 struct resource *res;
186 int ret = stmmac_dvr_remove(ndev);
188 if (priv->plat->exit)
189 priv->plat->exit(pdev);
191 platform_set_drvdata(pdev, NULL);
193 iounmap((void *)priv->ioaddr);
194 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
195 release_mem_region(res->start, resource_size(res));
201 static int stmmac_pltfr_suspend(struct device *dev)
203 struct net_device *ndev = dev_get_drvdata(dev);
205 return stmmac_suspend(ndev);
208 static int stmmac_pltfr_resume(struct device *dev)
210 struct net_device *ndev = dev_get_drvdata(dev);
212 return stmmac_resume(ndev);
215 int stmmac_pltfr_freeze(struct device *dev)
218 struct plat_stmmacenet_data *plat_dat = dev_get_platdata(dev);
219 struct net_device *ndev = dev_get_drvdata(dev);
220 struct platform_device *pdev = to_platform_device(dev);
222 ret = stmmac_freeze(ndev);
224 plat_dat->exit(pdev);
229 int stmmac_pltfr_restore(struct device *dev)
231 struct plat_stmmacenet_data *plat_dat = dev_get_platdata(dev);
232 struct net_device *ndev = dev_get_drvdata(dev);
233 struct platform_device *pdev = to_platform_device(dev);
236 plat_dat->init(pdev);
238 return stmmac_restore(ndev);
241 static const struct dev_pm_ops stmmac_pltfr_pm_ops = {
242 .suspend = stmmac_pltfr_suspend,
243 .resume = stmmac_pltfr_resume,
244 .freeze = stmmac_pltfr_freeze,
245 .thaw = stmmac_pltfr_restore,
246 .restore = stmmac_pltfr_restore,
249 static const struct dev_pm_ops stmmac_pltfr_pm_ops;
250 #endif /* CONFIG_PM */
252 static const struct of_device_id stmmac_dt_ids[] = {
253 { .compatible = "st,spear600-gmac", },
256 MODULE_DEVICE_TABLE(of, stmmac_dt_ids);
258 struct platform_driver stmmac_pltfr_driver = {
259 .probe = stmmac_pltfr_probe,
260 .remove = stmmac_pltfr_remove,
262 .name = STMMAC_RESOURCE_NAME,
263 .owner = THIS_MODULE,
264 .pm = &stmmac_pltfr_pm_ops,
265 .of_match_table = of_match_ptr(stmmac_dt_ids),
269 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
270 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
271 MODULE_LICENSE("GPL");