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");