[deliverable/linux.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->dma_cfg->pbl = 8;
		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;

	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);

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

	platform_set_drvdata(pdev, NULL);

	iounmap((void *)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)
{
	struct net_device *ndev = dev_get_drvdata(dev);

	return stmmac_freeze(ndev);
}

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

	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);

static struct platform_driver stmmac_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_platform_driver(stmmac_driver);

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")) {
36b77775	53	plat->dma_cfg->pbl = 8;
6a228452 SR	54	plat->has_gmac = 1;
	55	plat->pmt = 1;
	56	}
	57
	58	return 0;
	59	}
	60	#else
	61	static int __devinit stmmac_probe_config_dt(struct platform_device *pdev,
	62	struct plat_stmmacenet_data *plat,
	63	const char **mac)
	64	{
	65	return -ENOSYS;
	66	}
	67	#endif /* CONFIG_OF */
	68
bfab27a1 GC	69	/**
	70	* stmmac_pltfr_probe
	71	* @pdev: platform device pointer
	72	* Description: platform_device probe function. It allocates
	73	* the necessary resources and invokes the main to init
	74	* the net device, register the mdio bus etc.
	75	*/
	76	static int stmmac_pltfr_probe(struct platform_device *pdev)
	77	{
	78	int ret = 0;
	79	struct resource *res;
	80	void __iomem *addr = NULL;
	81	struct stmmac_priv *priv = NULL;
6a228452 SR	82	struct plat_stmmacenet_data *plat_dat = NULL;
6a228452 SR	83	const char *mac = NULL;
bfab27a1 GC	84
	85	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	86	if (!res)
	87	return -ENODEV;
	88
	89	if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
	90	pr_err("%s: ERROR: memory allocation failed"
	91	"cannot get the I/O addr 0x%x\n",
	92	__func__, (unsigned int)res->start);
	93	return -EBUSY;
	94	}
	95
	96	addr = ioremap(res->start, resource_size(res));
	97	if (!addr) {
	98	pr_err("%s: ERROR: memory mapping failed", __func__);
	99	ret = -ENOMEM;
	100	goto out_release_region;
	101	}
6a228452 SR	102
	103	if (pdev->dev.of_node) {
	104	plat_dat = devm_kzalloc(&pdev->dev,
	105	sizeof(struct plat_stmmacenet_data),
	106	GFP_KERNEL);
	107	if (!plat_dat) {
	108	pr_err("%s: ERROR: no memory", __func__);
	109	ret = -ENOMEM;
	110	goto out_unmap;
	111	}
	112
	113	ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
	114	if (ret) {
	115	pr_err("%s: main dt probe failed", __func__);
	116	goto out_unmap;
	117	}
	118	} else {
	119	plat_dat = pdev->dev.platform_data;
	120	}
cf3f047b GC	121
	122	/* Custom initialisation (if needed)*/
	123	if (plat_dat->init) {
	124	ret = plat_dat->init(pdev);
	125	if (unlikely(ret))
	126	goto out_unmap;
	127	}
	128
	129	priv = stmmac_dvr_probe(&(pdev->dev), plat_dat, addr);
bfab27a1	130	if (!priv) {
cf3f047b	131	pr_err("%s: main driver probe failed", __func__);
25cecd7e	132	goto out_unmap;
bfab27a1 GC	133	}
bfab27a1 GC	134
6a228452 SR	135	/* Get MAC address if available (DT) */
	136	if (mac)
	137	memcpy(priv->dev->dev_addr, mac, ETH_ALEN);
	138
bfab27a1 GC	139	/* Get the MAC information */
	140	priv->dev->irq = platform_get_irq_byname(pdev, "macirq");
	141	if (priv->dev->irq == -ENXIO) {
	142	pr_err("%s: ERROR: MAC IRQ configuration "
	143	"information not found\n", __func__);
	144	ret = -ENXIO;
	145	goto out_unmap;
	146	}
	147
	148	/*
	149	* On some platforms e.g. SPEAr the wake up irq differs from the mac irq
	150	* The external wake up irq can be passed through the platform code
	151	* named as "eth_wake_irq"
	152	*
	153	* In case the wake up interrupt is not passed from the platform
	154	* so the driver will continue to use the mac irq (ndev->irq)
	155	*/
	156	priv->wol_irq = platform_get_irq_byname(pdev, "eth_wake_irq");
	157	if (priv->wol_irq == -ENXIO)
	158	priv->wol_irq = priv->dev->irq;
	159
	160	platform_set_drvdata(pdev, priv->dev);
	161
bfab27a1 GC	162	pr_debug("STMMAC platform driver registration completed");
	163
	164	return 0;
	165
	166	out_unmap:
	167	iounmap(addr);
	168	platform_set_drvdata(pdev, NULL);
	169
	170	out_release_region:
	171	release_mem_region(res->start, resource_size(res));
	172
	173	return ret;
	174	}
	175
	176	/**
	177	* stmmac_pltfr_remove
	178	* @pdev: platform device pointer
	179	* Description: this function calls the main to free the net resources
	180	* and calls the platforms hook and release the resources (e.g. mem).
	181	*/
	182	static int stmmac_pltfr_remove(struct platform_device *pdev)
	183	{
	184	struct net_device *ndev = platform_get_drvdata(pdev);
	185	struct stmmac_priv *priv = netdev_priv(ndev);
	186	struct resource *res;
	187	int ret = stmmac_dvr_remove(ndev);
	188
	189	if (priv->plat->exit)
	190	priv->plat->exit(pdev);
	191
	192	if (priv->plat->exit)
	193	priv->plat->exit(pdev);
	194
	195	platform_set_drvdata(pdev, NULL);
	196
	197	iounmap((void *)priv->ioaddr);
	198	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	199	release_mem_region(res->start, resource_size(res));
	200
	201	return ret;
	202	}
	203
	204	#ifdef CONFIG_PM
	205	static int stmmac_pltfr_suspend(struct device *dev)
	206	{
	207	struct net_device *ndev = dev_get_drvdata(dev);
	208
	209	return stmmac_suspend(ndev);
	210	}
	211
	212	static int stmmac_pltfr_resume(struct device *dev)
	213	{
	214	struct net_device *ndev = dev_get_drvdata(dev);
	215
	216	return stmmac_resume(ndev);
	217	}
	218
	219	int stmmac_pltfr_freeze(struct device *dev)
	220	{
	221	struct net_device *ndev = dev_get_drvdata(dev);
	222
	223	return stmmac_freeze(ndev);
	224	}
	225
226	int stmmac_pltfr_restore(struct device *dev)
227	{
228	struct net_device *ndev = dev_get_drvdata(dev);
229
230	return stmmac_restore(ndev);
231	}
232
233	static const struct dev_pm_ops stmmac_pltfr_pm_ops = {
234	.suspend = stmmac_pltfr_suspend,
235	.resume = stmmac_pltfr_resume,
236	.freeze = stmmac_pltfr_freeze,
237	.thaw = stmmac_pltfr_restore,
238	.restore = stmmac_pltfr_restore,
239	};
240	#else
241	static const struct dev_pm_ops stmmac_pltfr_pm_ops;
242	#endif /* CONFIG_PM */
243
6a228452 SR	244	static const struct of_device_id stmmac_dt_ids[] = {
	245	{ .compatible = "st,spear600-gmac", },
	246	{ /* sentinel */ }
	247	};
	248	MODULE_DEVICE_TABLE(of, stmmac_dt_ids);
	249
bfab27a1 GC	250	static struct platform_driver stmmac_driver = {
	251	.probe = stmmac_pltfr_probe,
	252	.remove = stmmac_pltfr_remove,
	253	.driver = {
	254	.name = STMMAC_RESOURCE_NAME,
	255	.owner = THIS_MODULE,
	256	.pm = &stmmac_pltfr_pm_ops,
6a228452	257	.of_match_table = of_match_ptr(stmmac_dt_ids),
bfab27a1 GC	258	},
	259	};
	260
	261	module_platform_driver(stmmac_driver);
	262
	263	MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet PLATFORM driver");
	264	MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
	265	MODULE_LICENSE("GPL");