[linux-2.6-block.git] / drivers / net / ethernet / stmicro / stmmac / stmmac_platform.c

/*******************************************************************************
  This contains the functions to handle the platform driver.

  Copyright (C) 2007-2011  STMicroelectronics Ltd

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
*******************************************************************************/

#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_net.h>
#include "stmmac.h"

#ifdef CONFIG_OF
static int __devinit stmmac_probe_config_dt(struct platform_device *pdev,
					    struct plat_stmmacenet_data *plat,
					    const char **mac)
{
	struct device_node *np = pdev->dev.of_node;

	if (!np)
		return -ENODEV;

	*mac = of_get_mac_address(np);
	plat->interface = of_get_phy_mode(np);
	plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
					   sizeof(struct stmmac_mdio_bus_data),
					   GFP_KERNEL);

	/*
	 * Currently only the properties needed on SPEAr600
	 * are provided. All other properties should be added
	 * once needed on other platforms.
	 */
	if (of_device_is_compatible(np, "st,spear600-gmac")) {
		plat->has_gmac = 1;
		plat->pmt = 1;
	}

	return 0;
}
#else
static int __devinit stmmac_probe_config_dt(struct platform_device *pdev,
					    struct plat_stmmacenet_data *plat,
					    const char **mac)
{
	return -ENOSYS;
}
#endif /* CONFIG_OF */

/**
 * stmmac_pltfr_probe
 * @pdev: platform device pointer
 * Description: platform_device probe function. It allocates
 * the necessary resources and invokes the main to init
 * the net device, register the mdio bus etc.
 */
static int stmmac_pltfr_probe(struct platform_device *pdev)
{
	int ret = 0;
	struct resource *res;
	void __iomem *addr = NULL;
	struct stmmac_priv *priv = NULL;
	struct plat_stmmacenet_data *plat_dat = NULL;
	const char *mac = NULL;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res)
		return -ENODEV;

	if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
		pr_err("%s: ERROR: memory allocation failed"
		       "cannot get the I/O addr 0x%x\n",
		       __func__, (unsigned int)res->start);
		return -EBUSY;
	}

	addr = ioremap(res->start, resource_size(res));
	if (!addr) {
		pr_err("%s: ERROR: memory mapping failed", __func__);
		ret = -ENOMEM;
		goto out_release_region;
	}

	if (pdev->dev.of_node) {
		plat_dat = devm_kzalloc(&pdev->dev,
					sizeof(struct plat_stmmacenet_data),
					GFP_KERNEL);
		if (!plat_dat) {
			pr_err("%s: ERROR: no memory", __func__);
			ret = -ENOMEM;
			goto out_unmap;
		}

		ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
		if (ret) {
			pr_err("%s: main dt probe failed", __func__);
			goto out_unmap;
		}
	} else {
		plat_dat = pdev->dev.platform_data;
	}

	/* Custom initialisation (if needed)*/
	if (plat_dat->init) {
		ret = plat_dat->init(pdev);
		if (unlikely(ret))
			goto out_unmap;
	}

	priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
	if (!priv) {
		pr_err("%s: main driver probe failed", __func__);
		goto out_unmap;
	}

	/* Get MAC address if available (DT) */
	if (mac)
		memcpy(priv->dev->dev_addr, mac, ETH_ALEN);

	/* Get the MAC information */
	priv->dev->irq = platform_get_irq_byname(pdev, "macirq");
	if (priv->dev->irq == -ENXIO) {
		pr_err("%s: ERROR: MAC IRQ configuration "
		       "information not found\n", __func__);
		ret = -ENXIO;
		goto out_unmap;
	}

	/*
	 * On some platforms e.g. SPEAr the wake up irq differs from the mac irq
	 * The external wake up irq can be passed through the platform code
	 * named as "eth_wake_irq"
	 *
	 * In case the wake up interrupt is not passed from the platform
	 * so the driver will continue to use the mac irq (ndev->irq)
	 */
	priv->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
	if (priv->wol_irq == -ENXIO)
		priv->wol_irq = priv->dev->irq;

	priv->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");

	platform_set_drvdata(pdev, priv->dev);

	pr_debug("STMMAC platform driver registration completed");

	return 0;

out_unmap:
	iounmap(addr);
	platform_set_drvdata(pdev, NULL);

out_release_region:
	release_mem_region(res->start, resource_size(res));

	return ret;
}

/**
 * stmmac_pltfr_remove
 * @pdev: platform device pointer
 * Description: this function calls the main to free the net resources
 * and calls the platforms hook and release the resources (e.g. mem).
 */
static int stmmac_pltfr_remove(struct platform_device *pdev)
{
	struct net_device *ndev = platform_get_drvdata(pdev);
	struct stmmac_priv *priv = netdev_priv(ndev);
	struct resource *res;
	int ret = stmmac_dvr_remove(ndev);

	if (priv->plat->exit)
		priv->plat->exit(pdev);

	platform_set_drvdata(pdev, NULL);

	iounmap((void __force __iomem *)priv->ioaddr);
	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	release_mem_region(res->start, resource_size(res));

	return ret;
}

#ifdef CONFIG_PM
static int stmmac_pltfr_suspend(struct device *dev)
{
	struct net_device *ndev = dev_get_drvdata(dev);

	return stmmac_suspend(ndev);
}

static int stmmac_pltfr_resume(struct device *dev)
{
	struct net_device *ndev = dev_get_drvdata(dev);

	return stmmac_resume(ndev);
}

int stmmac_pltfr_freeze(struct device *dev)
{
	int ret;
	struct plat_stmmacenet_data *plat_dat = dev_get_platdata(dev);
	struct net_device *ndev = dev_get_drvdata(dev);
	struct platform_device *pdev = to_platform_device(dev);

	ret = stmmac_freeze(ndev);
	if (plat_dat->exit)
		plat_dat->exit(pdev);

	return ret;
}

int stmmac_pltfr_restore(struct device *dev)
{
	struct plat_stmmacenet_data *plat_dat = dev_get_platdata(dev);
	struct net_device *ndev = dev_get_drvdata(dev);
	struct platform_device *pdev = to_platform_device(dev);

	if (plat_dat->init)
		plat_dat->init(pdev);

	return stmmac_restore(ndev);
}

static const struct dev_pm_ops stmmac_pltfr_pm_ops = {
	.suspend = stmmac_pltfr_suspend,
	.resume = stmmac_pltfr_resume,
	.freeze = stmmac_pltfr_freeze,
	.thaw = stmmac_pltfr_restore,
	.restore = stmmac_pltfr_restore,
};
#else
static const struct dev_pm_ops stmmac_pltfr_pm_ops;
#endif /* CONFIG_PM */

static const struct of_device_id stmmac_dt_ids[] = {
	{ .compatible = "st,spear600-gmac", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, stmmac_dt_ids);

struct platform_driver stmmac_pltfr_driver = {
	.probe = stmmac_pltfr_probe,
	.remove = stmmac_pltfr_remove,
	.driver = {
		   .name = STMMAC_RESOURCE_NAME,
		   .owner = THIS_MODULE,
		   .pm = &stmmac_pltfr_pm_ops,
		   .of_match_table = of_match_ptr(stmmac_dt_ids),
		   },
};

MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
bfab27a1 GC	1	/*******************************************************************************
	2	This contains the functions to handle the platform driver.
	3
	4	Copyright (C) 2007-2011 STMicroelectronics Ltd
	5
	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.
	9
	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
	13	more details.
	14
	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.
	18
	19	The full GNU General Public License is included in this distribution in
	20	the file called "COPYING".
	21
	22	Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
	23	*******************************************************************************/
	24
	25	#include <linux/platform_device.h>
	26	#include <linux/io.h>
6a228452 SR	27	#include <linux/of.h>
6a228452 SR	28	#include <linux/of_net.h>
bfab27a1 GC	29	#include "stmmac.h"
bfab27a1 GC	30
6a228452 SR	31	#ifdef CONFIG_OF
	32	static int __devinit stmmac_probe_config_dt(struct platform_device *pdev,
	33	struct plat_stmmacenet_data *plat,
	34	const char **mac)
	35	{
	36	struct device_node *np = pdev->dev.of_node;
	37
	38	if (!np)
	39	return -ENODEV;
	40
	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),
	45	GFP_KERNEL);
	46
	47	/*
	48	* Currently only the properties needed on SPEAr600
	49	* are provided. All other properties should be added
	50	* once needed on other platforms.
	51	*/
	52	if (of_device_is_compatible(np, "st,spear600-gmac")) {
6a228452 SR	53	plat->has_gmac = 1;
	54	plat->pmt = 1;
	55	}
	56
	57	return 0;
	58	}
	59	#else
	60	static int __devinit stmmac_probe_config_dt(struct platform_device *pdev,
	61	struct plat_stmmacenet_data *plat,
	62	const char **mac)
	63	{
	64	return -ENOSYS;
	65	}
	66	#endif /* CONFIG_OF */
	67
bfab27a1 GC	68	/**
	69	* stmmac_pltfr_probe
	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.
	74	*/
	75	static int stmmac_pltfr_probe(struct platform_device *pdev)
	76	{
	77	int ret = 0;
	78	struct resource *res;
	79	void __iomem *addr = NULL;
	80	struct stmmac_priv *priv = NULL;
6a228452 SR	81	struct plat_stmmacenet_data *plat_dat = NULL;
6a228452 SR	82	const char *mac = NULL;
bfab27a1 GC	83
	84	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	85	if (!res)
	86	return -ENODEV;
	87
	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);
	92	return -EBUSY;
	93	}
	94
	95	addr = ioremap(res->start, resource_size(res));
	96	if (!addr) {
	97	pr_err("%s: ERROR: memory mapping failed", __func__);
	98	ret = -ENOMEM;
	99	goto out_release_region;
	100	}
6a228452 SR	101
	102	if (pdev->dev.of_node) {
	103	plat_dat = devm_kzalloc(&pdev->dev,
	104	sizeof(struct plat_stmmacenet_data),
	105	GFP_KERNEL);
	106	if (!plat_dat) {
	107	pr_err("%s: ERROR: no memory", __func__);
	108	ret = -ENOMEM;
	109	goto out_unmap;
	110	}
	111
	112	ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
	113	if (ret) {
	114	pr_err("%s: main dt probe failed", __func__);
	115	goto out_unmap;
	116	}
	117	} else {
	118	plat_dat = pdev->dev.platform_data;
	119	}
cf3f047b GC	120
	121	/* Custom initialisation (if needed)*/
	122	if (plat_dat->init) {
	123	ret = plat_dat->init(pdev);
	124	if (unlikely(ret))
	125	goto out_unmap;
	126	}
	127
	128	priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
bfab27a1	129	if (!priv) {
cf3f047b	130	pr_err("%s: main driver probe failed", __func__);
25cecd7e	131	goto out_unmap;
bfab27a1 GC	132	}
bfab27a1 GC	133
6a228452 SR	134	/* Get MAC address if available (DT) */
	135	if (mac)
	136	memcpy(priv->dev->dev_addr, mac, ETH_ALEN);
	137
bfab27a1 GC	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__);
	143	ret = -ENXIO;
	144	goto out_unmap;
	145	}
	146
	147	/*
	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"
	151	*
	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)
	154	*/
	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;
	158
d765955d GC	159	priv->lpi_irq = platform_get_irq_byname(pdev, "eth_lpi");
d765955d GC	160
bfab27a1 GC	161	platform_set_drvdata(pdev, priv->dev);
bfab27a1 GC	162
bfab27a1 GC	163	pr_debug("STMMAC platform driver registration completed");
	164
	165	return 0;
	166
	167	out_unmap:
	168	iounmap(addr);
	169	platform_set_drvdata(pdev, NULL);
	170
	171	out_release_region:
	172	release_mem_region(res->start, resource_size(res));
	173
	174	return ret;
	175	}
	176
	177	/**
	178	* stmmac_pltfr_remove
	179	* @pdev: platform device pointer
	180	* Description: this function calls the main to free the net resources
	181	* and calls the platforms hook and release the resources (e.g. mem).
	182	*/
	183	static int stmmac_pltfr_remove(struct platform_device *pdev)
	184	{
	185	struct net_device *ndev = platform_get_drvdata(pdev);
	186	struct stmmac_priv *priv = netdev_priv(ndev);
	187	struct resource *res;
	188	int ret = stmmac_dvr_remove(ndev);
	189
bfab27a1 GC	190	if (priv->plat->exit)
	191	priv->plat->exit(pdev);
	192
	193	platform_set_drvdata(pdev, NULL);
	194
64699336	195	iounmap((void __force __iomem *)priv->ioaddr);
bfab27a1 GC	196	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	197	release_mem_region(res->start, resource_size(res));
	198
	199	return ret;
	200	}
	201
	202	#ifdef CONFIG_PM
	203	static int stmmac_pltfr_suspend(struct device *dev)
	204	{
	205	struct net_device *ndev = dev_get_drvdata(dev);
	206
	207	return stmmac_suspend(ndev);
	208	}
	209
	210	static int stmmac_pltfr_resume(struct device *dev)
	211	{
	212	struct net_device *ndev = dev_get_drvdata(dev);
	213
	214	return stmmac_resume(ndev);
	215	}
	216
	217	int stmmac_pltfr_freeze(struct device *dev)
	218	{
3256251f FV	219	int ret;
3256251f FV	220	struct plat_stmmacenet_data *plat_dat = dev_get_platdata(dev);
bfab27a1	221	struct net_device *ndev = dev_get_drvdata(dev);
3256251f	222	struct platform_device *pdev = to_platform_device(dev);
bfab27a1	223
3256251f FV	224	ret = stmmac_freeze(ndev);
	225	if (plat_dat->exit)
	226	plat_dat->exit(pdev);
	227
	228	return ret;
bfab27a1 GC	229	}
	230
	231	int stmmac_pltfr_restore(struct device *dev)
	232	{
3256251f	233	struct plat_stmmacenet_data *plat_dat = dev_get_platdata(dev);
bfab27a1	234	struct net_device *ndev = dev_get_drvdata(dev);
3256251f FV	235	struct platform_device *pdev = to_platform_device(dev);
	236
	237	if (plat_dat->init)
	238	plat_dat->init(pdev);
bfab27a1 GC	239
	240	return stmmac_restore(ndev);
	241	}
	242
	243	static const struct dev_pm_ops stmmac_pltfr_pm_ops = {
	244	.suspend = stmmac_pltfr_suspend,
	245	.resume = stmmac_pltfr_resume,
	246	.freeze = stmmac_pltfr_freeze,
	247	.thaw = stmmac_pltfr_restore,
	248	.restore = stmmac_pltfr_restore,
	249	};
	250	#else
	251	static const struct dev_pm_ops stmmac_pltfr_pm_ops;
	252	#endif /* CONFIG_PM */
	253
6a228452 SR	254	static const struct of_device_id stmmac_dt_ids[] = {
	255	{ .compatible = "st,spear600-gmac", },
	256	{ /* sentinel */ }
	257	};
	258	MODULE_DEVICE_TABLE(of, stmmac_dt_ids);
	259
ba27ec66	260	struct platform_driver stmmac_pltfr_driver = {
bfab27a1 GC	261	.probe = stmmac_pltfr_probe,
	262	.remove = stmmac_pltfr_remove,
	263	.driver = {
	264	.name = STMMAC_RESOURCE_NAME,
	265	.owner = THIS_MODULE,
	266	.pm = &stmmac_pltfr_pm_ops,
6a228452	267	.of_match_table = of_match_ptr(stmmac_dt_ids),
bfab27a1 GC	268	},
	269	};
	270
bfab27a1 GC	271	MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
	272	MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
	273	MODULE_LICENSE("GPL");