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>
31 * @pdev: platform device pointer
32 * Description: platform_device probe function. It allocates
33 * the necessary resources and invokes the main to init
34 * the net device, register the mdio bus etc.
36 static int stmmac_pltfr_probe(struct platform_device
*pdev
)
40 void __iomem
*addr
= NULL
;
41 struct stmmac_priv
*priv
= NULL
;
42 struct plat_stmmacenet_data
*plat_dat
;
44 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
48 if (!request_mem_region(res
->start
, resource_size(res
), pdev
->name
)) {
49 pr_err("%s: ERROR: memory allocation failed"
50 "cannot get the I/O addr 0x%x\n",
51 __func__
, (unsigned int)res
->start
);
55 addr
= ioremap(res
->start
, resource_size(res
));
57 pr_err("%s: ERROR: memory mapping failed", __func__
);
59 goto out_release_region
;
61 plat_dat
= pdev
->dev
.platform_data
;
62 priv
= stmmac_dvr_probe(&(pdev
->dev
), plat_dat
);
64 pr_err("%s: main drivr probe failed", __func__
);
69 /* Set the I/O base addr */
70 priv
->dev
->base_addr
= (unsigned long)addr
;
72 /* Get the MAC information */
73 priv
->dev
->irq
= platform_get_irq_byname(pdev
, "macirq");
74 if (priv
->dev
->irq
== -ENXIO
) {
75 pr_err("%s: ERROR: MAC IRQ configuration "
76 "information not found\n", __func__
);
82 * On some platforms e.g. SPEAr the wake up irq differs from the mac irq
83 * The external wake up irq can be passed through the platform code
84 * named as "eth_wake_irq"
86 * In case the wake up interrupt is not passed from the platform
87 * so the driver will continue to use the mac irq (ndev->irq)
89 priv
->wol_irq
= platform_get_irq_byname(pdev
, "eth_wake_irq");
90 if (priv
->wol_irq
== -ENXIO
)
91 priv
->wol_irq
= priv
->dev
->irq
;
93 platform_set_drvdata(pdev
, priv
->dev
);
95 /* Custom initialisation */
96 if (priv
->plat
->init
) {
97 ret
= priv
->plat
->init(pdev
);
102 pr_debug("STMMAC platform driver registration completed");
108 platform_set_drvdata(pdev
, NULL
);
111 release_mem_region(res
->start
, resource_size(res
));
117 * stmmac_pltfr_remove
118 * @pdev: platform device pointer
119 * Description: this function calls the main to free the net resources
120 * and calls the platforms hook and release the resources (e.g. mem).
122 static int stmmac_pltfr_remove(struct platform_device
*pdev
)
124 struct net_device
*ndev
= platform_get_drvdata(pdev
);
125 struct stmmac_priv
*priv
= netdev_priv(ndev
);
126 struct resource
*res
;
127 int ret
= stmmac_dvr_remove(ndev
);
129 if (priv
->plat
->exit
)
130 priv
->plat
->exit(pdev
);
132 if (priv
->plat
->exit
)
133 priv
->plat
->exit(pdev
);
135 platform_set_drvdata(pdev
, NULL
);
137 iounmap((void *)priv
->ioaddr
);
138 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
139 release_mem_region(res
->start
, resource_size(res
));
145 static int stmmac_pltfr_suspend(struct device
*dev
)
147 struct net_device
*ndev
= dev_get_drvdata(dev
);
149 return stmmac_suspend(ndev
);
152 static int stmmac_pltfr_resume(struct device
*dev
)
154 struct net_device
*ndev
= dev_get_drvdata(dev
);
156 return stmmac_resume(ndev
);
159 int stmmac_pltfr_freeze(struct device
*dev
)
161 struct net_device
*ndev
= dev_get_drvdata(dev
);
163 return stmmac_freeze(ndev
);
166 int stmmac_pltfr_restore(struct device
*dev
)
168 struct net_device
*ndev
= dev_get_drvdata(dev
);
170 return stmmac_restore(ndev
);
173 static const struct dev_pm_ops stmmac_pltfr_pm_ops
= {
174 .suspend
= stmmac_pltfr_suspend
,
175 .resume
= stmmac_pltfr_resume
,
176 .freeze
= stmmac_pltfr_freeze
,
177 .thaw
= stmmac_pltfr_restore
,
178 .restore
= stmmac_pltfr_restore
,
181 static const struct dev_pm_ops stmmac_pltfr_pm_ops
;
182 #endif /* CONFIG_PM */
184 static struct platform_driver stmmac_driver
= {
185 .probe
= stmmac_pltfr_probe
,
186 .remove
= stmmac_pltfr_remove
,
188 .name
= STMMAC_RESOURCE_NAME
,
189 .owner
= THIS_MODULE
,
190 .pm
= &stmmac_pltfr_pm_ops
,
194 module_platform_driver(stmmac_driver
);
196 MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
197 MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
198 MODULE_LICENSE("GPL");