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>
29 #include <linux/of_device.h>
32 static const struct of_device_id stmmac_dt_ids[] = {
33 /* SoC specific glue layers should come before generic bindings */
34 { .compatible = "st,spear600-gmac"},
35 { .compatible = "snps,dwmac-3.610"},
36 { .compatible = "snps,dwmac-3.70a"},
37 { .compatible = "snps,dwmac-3.710"},
38 { .compatible = "snps,dwmac"},
41 MODULE_DEVICE_TABLE(of, stmmac_dt_ids);
44 static int stmmac_probe_config_dt(struct platform_device *pdev,
45 struct plat_stmmacenet_data *plat,
48 struct device_node *np = pdev->dev.of_node;
49 struct stmmac_dma_cfg *dma_cfg;
50 const struct of_device_id *device;
55 device = of_match_device(stmmac_dt_ids, &pdev->dev);
60 const struct stmmac_of_data *data = device->data;
61 plat->has_gmac = data->has_gmac;
62 plat->enh_desc = data->enh_desc;
63 plat->tx_coe = data->tx_coe;
64 plat->rx_coe = data->rx_coe;
65 plat->bugged_jumbo = data->bugged_jumbo;
66 plat->pmt = data->pmt;
67 plat->riwt_off = data->riwt_off;
68 plat->fix_mac_speed = data->fix_mac_speed;
69 plat->bus_setup = data->bus_setup;
70 plat->setup = data->setup;
71 plat->free = data->free;
72 plat->init = data->init;
73 plat->exit = data->exit;
76 *mac = of_get_mac_address(np);
77 plat->interface = of_get_phy_mode(np);
79 /* Get max speed of operation from device tree */
80 if (of_property_read_u32(np, "max-speed", &plat->max_speed))
83 plat->bus_id = of_alias_get_id(np, "ethernet");
87 /* Default to phy auto-detection */
90 /* "snps,phy-addr" is not a standard property. Mark it as deprecated
91 * and warn of its use. Remove this when phy node support is added.
93 if (of_property_read_u32(np, "snps,phy-addr", &plat->phy_addr) == 0)
94 dev_warn(&pdev->dev, "snps,phy-addr property is deprecated\n");
96 plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
97 sizeof(struct stmmac_mdio_bus_data),
100 plat->force_sf_dma_mode = of_property_read_bool(np, "snps,force_sf_dma_mode");
103 * Currently only the properties needed on SPEAr600
104 * are provided. All other properties should be added
105 * once needed on other platforms.
107 if (of_device_is_compatible(np, "st,spear600-gmac") ||
108 of_device_is_compatible(np, "snps,dwmac-3.70a") ||
109 of_device_is_compatible(np, "snps,dwmac")) {
114 if (of_device_is_compatible(np, "snps,dwmac-3.610") ||
115 of_device_is_compatible(np, "snps,dwmac-3.710")) {
117 plat->bugged_jumbo = 1;
118 plat->force_sf_dma_mode = 1;
121 if (of_find_property(np, "snps,pbl", NULL)) {
122 dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg),
126 plat->dma_cfg = dma_cfg;
127 of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl);
128 dma_cfg->fixed_burst =
129 of_property_read_bool(np, "snps,fixed-burst");
130 dma_cfg->mixed_burst =
131 of_property_read_bool(np, "snps,mixed-burst");
133 plat->force_thresh_dma_mode = of_property_read_bool(np, "snps,force_thresh_dma_mode");
134 if (plat->force_thresh_dma_mode) {
135 plat->force_sf_dma_mode = 0;
136 pr_warn("force_sf_dma_mode is ignored if force_thresh_dma_mode is set.");
142 static int stmmac_probe_config_dt(struct platform_device *pdev,
143 struct plat_stmmacenet_data *plat,
148 #endif /* CONFIG_OF */
152 * @pdev: platform device pointer
153 * Description: platform_device probe function. It allocates
154 * the necessary resources and invokes the main to init
155 * the net device, register the mdio bus etc.
157 static int stmmac_pltfr_probe(struct platform_device *pdev)
160 struct resource *res;
161 struct device *dev = &pdev->dev;
162 void __iomem *addr = NULL;
163 struct stmmac_priv *priv = NULL;
164 struct plat_stmmacenet_data *plat_dat = NULL;
165 const char *mac = NULL;
167 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
168 addr = devm_ioremap_resource(dev, res);
170 return PTR_ERR(addr);
172 plat_dat = dev_get_platdata(&pdev->dev);
173 if (pdev->dev.of_node) {
175 plat_dat = devm_kzalloc(&pdev->dev,
176 sizeof(struct plat_stmmacenet_data),
179 pr_err("%s: ERROR: no memory", __func__);
183 ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
185 pr_err("%s: main dt probe failed", __func__);
190 /* Custom setup (if needed) */
191 if (plat_dat->setup) {
192 plat_dat->bsp_priv = plat_dat->setup(pdev);
193 if (IS_ERR(plat_dat->bsp_priv))
194 return PTR_ERR(plat_dat->bsp_priv);
197 /* Custom initialisation (if needed)*/
198 if (plat_dat->init) {
199 ret = plat_dat->init(pdev, plat_dat->bsp_priv);
204 priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
206 pr_err("%s: main driver probe failed", __func__);
207 return PTR_ERR(priv);
210 /* Get MAC address if available (DT) */
212 memcpy(priv->dev->dev_addr, mac, ETH_ALEN);
214 /* Get the MAC information */
215 priv->dev->irq = platform_get_irq_byname(pdev, "macirq");
216 if (priv->dev->irq == -ENXIO) {
217 pr_err("%s: ERROR: MAC IRQ configuration "
218 "information not found\n", __func__);
223 * On some platforms e.g. SPEAr the wake up irq differs from the mac irq
224 * The external wake up irq can be passed through the platform code
225 * named as "eth_wake_irq"
227 * In case the wake up interrupt is not passed from the platform
228 * so the driver will continue to use the mac irq (ndev->irq)
230 priv->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
231 if (priv->wol_irq == -ENXIO)
232 priv->wol_irq = priv->dev->irq;
234 priv->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
236 platform_set_drvdata(pdev, priv->dev);
238 pr_debug("STMMAC platform driver registration completed");
244 * stmmac_pltfr_remove
245 * @pdev: platform device pointer
246 * Description: this function calls the main to free the net resources
247 * and calls the platforms hook and release the resources (e.g. mem).
249 static int stmmac_pltfr_remove(struct platform_device *pdev)
251 struct net_device *ndev = platform_get_drvdata(pdev);
252 struct stmmac_priv *priv = netdev_priv(ndev);
253 int ret = stmmac_dvr_remove(ndev);
255 if (priv->plat->exit)
256 priv->plat->exit(pdev, priv->plat->bsp_priv);
258 if (priv->plat->free)
259 priv->plat->free(pdev, priv->plat->bsp_priv);
265 static int stmmac_pltfr_suspend(struct device *dev)
268 struct net_device *ndev = dev_get_drvdata(dev);
269 struct stmmac_priv *priv = netdev_priv(ndev);
270 struct platform_device *pdev = to_platform_device(dev);
272 ret = stmmac_suspend(ndev);
273 if (priv->plat->exit)
274 priv->plat->exit(pdev, priv->plat->bsp_priv);
279 static int stmmac_pltfr_resume(struct device *dev)
281 struct net_device *ndev = dev_get_drvdata(dev);
282 struct stmmac_priv *priv = netdev_priv(ndev);
283 struct platform_device *pdev = to_platform_device(dev);
285 if (priv->plat->init)
286 priv->plat->init(pdev, priv->plat->bsp_priv);
288 return stmmac_resume(ndev);
291 #endif /* CONFIG_PM */
293 static SIMPLE_DEV_PM_OPS(stmmac_pltfr_pm_ops,
294 stmmac_pltfr_suspend, stmmac_pltfr_resume);
296 struct platform_driver stmmac_pltfr_driver = {
297 .probe = stmmac_pltfr_probe,
298 .remove = stmmac_pltfr_remove,
300 .name = STMMAC_RESOURCE_NAME,
301 .owner = THIS_MODULE,
302 .pm = &stmmac_pltfr_pm_ops,
303 .of_match_table = of_match_ptr(stmmac_dt_ids),
307 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
308 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
309 MODULE_LICENSE("GPL");