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;
37 struct stmmac_dma_cfg *dma_cfg;
42 *mac = of_get_mac_address(np);
43 plat->interface = of_get_phy_mode(np);
45 plat->bus_id = of_alias_get_id(np, "ethernet");
49 of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr);
51 plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
52 sizeof(struct stmmac_mdio_bus_data),
56 * Currently only the properties needed on SPEAr600
57 * are provided. All other properties should be added
58 * once needed on other platforms.
60 if (of_device_is_compatible(np, "st,spear600-gmac") ||
61 of_device_is_compatible(np, "snps,dwmac-3.70a") ||
62 of_device_is_compatible(np, "snps,dwmac")) {
67 if (of_device_is_compatible(np, "snps,dwmac-3.610") ||
68 of_device_is_compatible(np, "snps,dwmac-3.710")) {
70 plat->bugged_jumbo = 1;
71 plat->force_sf_dma_mode = 1;
74 dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), GFP_KERNEL);
78 plat->dma_cfg = dma_cfg;
79 of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl);
80 dma_cfg->fixed_burst = of_property_read_bool(np, "snps,fixed-burst");
81 dma_cfg->mixed_burst = of_property_read_bool(np, "snps,mixed-burst");
86 static int stmmac_probe_config_dt(struct platform_device *pdev,
87 struct plat_stmmacenet_data *plat,
92 #endif /* CONFIG_OF */
96 * @pdev: platform device pointer
97 * Description: platform_device probe function. It allocates
98 * the necessary resources and invokes the main to init
99 * the net device, register the mdio bus etc.
101 static int stmmac_pltfr_probe(struct platform_device *pdev)
104 struct resource *res;
105 struct device *dev = &pdev->dev;
106 void __iomem *addr = NULL;
107 struct stmmac_priv *priv = NULL;
108 struct plat_stmmacenet_data *plat_dat = NULL;
109 const char *mac = NULL;
111 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
115 addr = devm_ioremap_resource(dev, res);
117 return PTR_ERR(addr);
119 plat_dat = pdev->dev.platform_data;
120 if (pdev->dev.of_node) {
122 plat_dat = devm_kzalloc(&pdev->dev,
123 sizeof(struct plat_stmmacenet_data),
126 pr_err("%s: ERROR: no memory", __func__);
130 ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
132 pr_err("%s: main dt probe failed", __func__);
137 /* Custom initialisation (if needed)*/
138 if (plat_dat->init) {
139 ret = plat_dat->init(pdev);
144 priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
146 pr_err("%s: main driver probe failed", __func__);
150 /* Get MAC address if available (DT) */
152 memcpy(priv->dev->dev_addr, mac, ETH_ALEN);
154 /* Get the MAC information */
155 priv->dev->irq = platform_get_irq_byname(pdev, "macirq");
156 if (priv->dev->irq == -ENXIO) {
157 pr_err("%s: ERROR: MAC IRQ configuration "
158 "information not found\n", __func__);
163 * On some platforms e.g. SPEAr the wake up irq differs from the mac irq
164 * The external wake up irq can be passed through the platform code
165 * named as "eth_wake_irq"
167 * In case the wake up interrupt is not passed from the platform
168 * so the driver will continue to use the mac irq (ndev->irq)
170 priv->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
171 if (priv->wol_irq == -ENXIO)
172 priv->wol_irq = priv->dev->irq;
174 priv->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
176 platform_set_drvdata(pdev, priv->dev);
178 pr_debug("STMMAC platform driver registration completed");
184 * stmmac_pltfr_remove
185 * @pdev: platform device pointer
186 * Description: this function calls the main to free the net resources
187 * and calls the platforms hook and release the resources (e.g. mem).
189 static int stmmac_pltfr_remove(struct platform_device *pdev)
191 struct net_device *ndev = platform_get_drvdata(pdev);
192 struct stmmac_priv *priv = netdev_priv(ndev);
193 int ret = stmmac_dvr_remove(ndev);
195 if (priv->plat->exit)
196 priv->plat->exit(pdev);
202 static int stmmac_pltfr_suspend(struct device *dev)
204 struct net_device *ndev = dev_get_drvdata(dev);
206 return stmmac_suspend(ndev);
209 static int stmmac_pltfr_resume(struct device *dev)
211 struct net_device *ndev = dev_get_drvdata(dev);
213 return stmmac_resume(ndev);
216 int stmmac_pltfr_freeze(struct device *dev)
219 struct plat_stmmacenet_data *plat_dat = dev_get_platdata(dev);
220 struct net_device *ndev = dev_get_drvdata(dev);
221 struct platform_device *pdev = to_platform_device(dev);
223 ret = stmmac_freeze(ndev);
225 plat_dat->exit(pdev);
230 int stmmac_pltfr_restore(struct device *dev)
232 struct plat_stmmacenet_data *plat_dat = dev_get_platdata(dev);
233 struct net_device *ndev = dev_get_drvdata(dev);
234 struct platform_device *pdev = to_platform_device(dev);
237 plat_dat->init(pdev);
239 return stmmac_restore(ndev);
242 static const struct dev_pm_ops stmmac_pltfr_pm_ops = {
243 .suspend = stmmac_pltfr_suspend,
244 .resume = stmmac_pltfr_resume,
245 .freeze = stmmac_pltfr_freeze,
246 .thaw = stmmac_pltfr_restore,
247 .restore = stmmac_pltfr_restore,
250 static const struct dev_pm_ops stmmac_pltfr_pm_ops;
251 #endif /* CONFIG_PM */
253 static const struct of_device_id stmmac_dt_ids[] = {
254 { .compatible = "st,spear600-gmac"},
255 { .compatible = "snps,dwmac-3.610"},
256 { .compatible = "snps,dwmac-3.70a"},
257 { .compatible = "snps,dwmac-3.710"},
258 { .compatible = "snps,dwmac"},
261 MODULE_DEVICE_TABLE(of, stmmac_dt_ids);
263 struct platform_driver stmmac_pltfr_driver = {
264 .probe = stmmac_pltfr_probe,
265 .remove = stmmac_pltfr_remove,
267 .name = STMMAC_RESOURCE_NAME,
268 .owner = THIS_MODULE,
269 .pm = &stmmac_pltfr_pm_ops,
270 .of_match_table = of_match_ptr(stmmac_dt_ids),
274 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
275 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
276 MODULE_LICENSE("GPL");