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 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") ||
53 of_device_is_compatible(np, "snps,dwmac-3.70a") ||
54 of_device_is_compatible(np, "snps,dwmac")) {
62 static int stmmac_probe_config_dt(struct platform_device *pdev,
63 struct plat_stmmacenet_data *plat,
68 #endif /* CONFIG_OF */
72 * @pdev: platform device pointer
73 * Description: platform_device probe function. It allocates
74 * the necessary resources and invokes the main to init
75 * the net device, register the mdio bus etc.
77 static int stmmac_pltfr_probe(struct platform_device *pdev)
81 struct device *dev = &pdev->dev;
82 void __iomem *addr = NULL;
83 struct stmmac_priv *priv = NULL;
84 struct plat_stmmacenet_data *plat_dat = NULL;
85 const char *mac = NULL;
87 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
91 addr = devm_request_and_ioremap(dev, res);
93 pr_err("%s: ERROR: memory mapping failed", __func__);
97 if (pdev->dev.of_node) {
98 plat_dat = devm_kzalloc(&pdev->dev,
99 sizeof(struct plat_stmmacenet_data),
102 pr_err("%s: ERROR: no memory", __func__);
106 ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
108 pr_err("%s: main dt probe failed", __func__);
112 plat_dat = pdev->dev.platform_data;
115 /* Custom initialisation (if needed)*/
116 if (plat_dat->init) {
117 ret = plat_dat->init(pdev);
122 priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
124 pr_err("%s: main driver probe failed", __func__);
128 /* Get MAC address if available (DT) */
130 memcpy(priv->dev->dev_addr, mac, ETH_ALEN);
132 /* Get the MAC information */
133 priv->dev->irq = platform_get_irq_byname(pdev, "macirq");
134 if (priv->dev->irq == -ENXIO) {
135 pr_err("%s: ERROR: MAC IRQ configuration "
136 "information not found\n", __func__);
141 * On some platforms e.g. SPEAr the wake up irq differs from the mac irq
142 * The external wake up irq can be passed through the platform code
143 * named as "eth_wake_irq"
145 * In case the wake up interrupt is not passed from the platform
146 * so the driver will continue to use the mac irq (ndev->irq)
148 priv->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
149 if (priv->wol_irq == -ENXIO)
150 priv->wol_irq = priv->dev->irq;
152 priv->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
154 platform_set_drvdata(pdev, priv->dev);
156 pr_debug("STMMAC platform driver registration completed");
162 * stmmac_pltfr_remove
163 * @pdev: platform device pointer
164 * Description: this function calls the main to free the net resources
165 * and calls the platforms hook and release the resources (e.g. mem).
167 static int stmmac_pltfr_remove(struct platform_device *pdev)
169 struct net_device *ndev = platform_get_drvdata(pdev);
170 struct stmmac_priv *priv = netdev_priv(ndev);
171 int ret = stmmac_dvr_remove(ndev);
173 if (priv->plat->exit)
174 priv->plat->exit(pdev);
176 platform_set_drvdata(pdev, NULL);
182 static int stmmac_pltfr_suspend(struct device *dev)
184 struct net_device *ndev = dev_get_drvdata(dev);
186 return stmmac_suspend(ndev);
189 static int stmmac_pltfr_resume(struct device *dev)
191 struct net_device *ndev = dev_get_drvdata(dev);
193 return stmmac_resume(ndev);
196 int stmmac_pltfr_freeze(struct device *dev)
199 struct plat_stmmacenet_data *plat_dat = dev_get_platdata(dev);
200 struct net_device *ndev = dev_get_drvdata(dev);
201 struct platform_device *pdev = to_platform_device(dev);
203 ret = stmmac_freeze(ndev);
205 plat_dat->exit(pdev);
210 int stmmac_pltfr_restore(struct device *dev)
212 struct plat_stmmacenet_data *plat_dat = dev_get_platdata(dev);
213 struct net_device *ndev = dev_get_drvdata(dev);
214 struct platform_device *pdev = to_platform_device(dev);
217 plat_dat->init(pdev);
219 return stmmac_restore(ndev);
222 static const struct dev_pm_ops stmmac_pltfr_pm_ops = {
223 .suspend = stmmac_pltfr_suspend,
224 .resume = stmmac_pltfr_resume,
225 .freeze = stmmac_pltfr_freeze,
226 .thaw = stmmac_pltfr_restore,
227 .restore = stmmac_pltfr_restore,
230 static const struct dev_pm_ops stmmac_pltfr_pm_ops;
231 #endif /* CONFIG_PM */
233 static const struct of_device_id stmmac_dt_ids[] = {
234 { .compatible = "st,spear600-gmac"},
235 { .compatible = "snps,dwmac-3.70a"},
236 { .compatible = "snps,dwmac"},
239 MODULE_DEVICE_TABLE(of, stmmac_dt_ids);
241 struct platform_driver stmmac_pltfr_driver = {
242 .probe = stmmac_pltfr_probe,
243 .remove = stmmac_pltfr_remove,
245 .name = STMMAC_RESOURCE_NAME,
246 .owner = THIS_MODULE,
247 .pm = &stmmac_pltfr_pm_ops,
248 .of_match_table = of_match_ptr(stmmac_dt_ids),
252 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
253 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
254 MODULE_LICENSE("GPL");