[deliverable/linux.git] / drivers / usb / host / fsl-mph-dr-of.c

/*
 * Setup platform devices needed by the Freescale multi-port host
 * and/or dual-role USB controller modules based on the description
 * in flat device tree.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/of_platform.h>
#include <linux/clk.h>
#include <linux/module.h>

struct fsl_usb2_dev_data {
	char *dr_mode;		/* controller mode */
	char *drivers[3];	/* drivers to instantiate for this mode */
	enum fsl_usb2_operating_modes op_mode;	/* operating mode */
};

struct fsl_usb2_dev_data dr_mode_data[] __devinitdata = {
	{
		.dr_mode = "host",
		.drivers = { "fsl-ehci", NULL, NULL, },
		.op_mode = FSL_USB2_DR_HOST,
	},
	{
		.dr_mode = "otg",
		.drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", },
		.op_mode = FSL_USB2_DR_OTG,
	},
	{
		.dr_mode = "peripheral",
		.drivers = { "fsl-usb2-udc", NULL, NULL, },
		.op_mode = FSL_USB2_DR_DEVICE,
	},
};

struct fsl_usb2_dev_data * __devinit get_dr_mode_data(struct device_node *np)
{
	const unsigned char *prop;
	int i;

	prop = of_get_property(np, "dr_mode", NULL);
	if (prop) {
		for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) {
			if (!strcmp(prop, dr_mode_data[i].dr_mode))
				return &dr_mode_data[i];
		}
	}
	pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n",
		np->full_name);
	return &dr_mode_data[0]; /* mode not specified, use host */
}

static enum fsl_usb2_phy_modes __devinit determine_usb_phy(const char *phy_type)
{
	if (!phy_type)
		return FSL_USB2_PHY_NONE;
	if (!strcasecmp(phy_type, "ulpi"))
		return FSL_USB2_PHY_ULPI;
	if (!strcasecmp(phy_type, "utmi"))
		return FSL_USB2_PHY_UTMI;
	if (!strcasecmp(phy_type, "utmi_wide"))
		return FSL_USB2_PHY_UTMI_WIDE;
	if (!strcasecmp(phy_type, "serial"))
		return FSL_USB2_PHY_SERIAL;

	return FSL_USB2_PHY_NONE;
}

struct platform_device * __devinit fsl_usb2_device_register(
					struct platform_device *ofdev,
					struct fsl_usb2_platform_data *pdata,
					const char *name, int id)
{
	struct platform_device *pdev;
	const struct resource *res = ofdev->resource;
	unsigned int num = ofdev->num_resources;
	int retval;

	pdev = platform_device_alloc(name, id);
	if (!pdev) {
		retval = -ENOMEM;
		goto error;
	}

	pdev->dev.parent = &ofdev->dev;

	pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
	pdev->dev.dma_mask = &pdev->archdata.dma_mask;
	*pdev->dev.dma_mask = *ofdev->dev.dma_mask;

	retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
	if (retval)
		goto error;

	if (num) {
		retval = platform_device_add_resources(pdev, res, num);
		if (retval)
			goto error;
	}

	retval = platform_device_add(pdev);
	if (retval)
		goto error;

	return pdev;

error:
	platform_device_put(pdev);
	return ERR_PTR(retval);
}

static const struct of_device_id fsl_usb2_mph_dr_of_match[];

static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
{
	struct device_node *np = ofdev->dev.of_node;
	struct platform_device *usb_dev;
	struct fsl_usb2_platform_data data, *pdata;
	struct fsl_usb2_dev_data *dev_data;
	const struct of_device_id *match;
	const unsigned char *prop;
	static unsigned int idx;
	int i;

	if (!of_device_is_available(np))
		return -ENODEV;

	match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
	if (!match)
		return -ENODEV;

	pdata = &data;
	if (match->data)
		memcpy(pdata, match->data, sizeof(data));
	else
		memset(pdata, 0, sizeof(data));

	dev_data = get_dr_mode_data(np);

	if (of_device_is_compatible(np, "fsl-usb2-mph")) {
		if (of_get_property(np, "port0", NULL))
			pdata->port_enables |= FSL_USB2_PORT0_ENABLED;

		if (of_get_property(np, "port1", NULL))
			pdata->port_enables |= FSL_USB2_PORT1_ENABLED;

		pdata->operating_mode = FSL_USB2_MPH_HOST;
	} else {
		if (of_get_property(np, "fsl,invert-drvvbus", NULL))
			pdata->invert_drvvbus = 1;

		if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
			pdata->invert_pwr_fault = 1;

		/* setup mode selected in the device tree */
		pdata->operating_mode = dev_data->op_mode;
	}

	prop = of_get_property(np, "phy_type", NULL);
	pdata->phy_mode = determine_usb_phy(prop);

	for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
		if (!dev_data->drivers[i])
			continue;
		usb_dev = fsl_usb2_device_register(ofdev, pdata,
					dev_data->drivers[i], idx);
		if (IS_ERR(usb_dev)) {
			dev_err(&ofdev->dev, "Can't register usb device\n");
			return PTR_ERR(usb_dev);
		}
	}
	idx++;
	return 0;
}

static int __devexit __unregister_subdev(struct device *dev, void *d)
{
	platform_device_unregister(to_platform_device(dev));
	return 0;
}

static int __devexit fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
{
	device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
	return 0;
}

#ifdef CONFIG_PPC_MPC512x

#define USBGENCTRL		0x200		/* NOTE: big endian */
#define GC_WU_INT_CLR		(1 << 5)	/* Wakeup int clear */
#define GC_ULPI_SEL		(1 << 4)	/* ULPI i/f select (usb0 only)*/
#define GC_PPP			(1 << 3)	/* Inv. Port Power Polarity */
#define GC_PFP			(1 << 2)	/* Inv. Power Fault Polarity */
#define GC_WU_ULPI_EN		(1 << 1)	/* Wakeup on ULPI event */
#define GC_WU_IE		(1 << 1)	/* Wakeup interrupt enable */

#define ISIPHYCTRL		0x204		/* NOTE: big endian */
#define PHYCTRL_PHYE		(1 << 4)	/* On-chip UTMI PHY enable */
#define PHYCTRL_BSENH		(1 << 3)	/* Bit Stuff Enable High */
#define PHYCTRL_BSEN		(1 << 2)	/* Bit Stuff Enable */
#define PHYCTRL_LSFE		(1 << 1)	/* Line State Filter Enable */
#define PHYCTRL_PXE		(1 << 0)	/* PHY oscillator enable */

int fsl_usb2_mpc5121_init(struct platform_device *pdev)
{
	struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
	struct clk *clk;
	char clk_name[10];
	int base, clk_num;

	base = pdev->resource->start & 0xf000;
	if (base == 0x3000)
		clk_num = 1;
	else if (base == 0x4000)
		clk_num = 2;
	else
		return -ENODEV;

	snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num);
	clk = clk_get(&pdev->dev, clk_name);
	if (IS_ERR(clk)) {
		dev_err(&pdev->dev, "failed to get clk\n");
		return PTR_ERR(clk);
	}

	clk_enable(clk);
	pdata->clk = clk;

	if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
		u32 reg = 0;

		if (pdata->invert_drvvbus)
			reg |= GC_PPP;

		if (pdata->invert_pwr_fault)
			reg |= GC_PFP;

		out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
		out_be32(pdata->regs + USBGENCTRL, reg);
	}
	return 0;
}

static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
{
	struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;

	pdata->regs = NULL;

	if (pdata->clk) {
		clk_disable(pdata->clk);
		clk_put(pdata->clk);
	}
}

static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
	.big_endian_desc = 1,
	.big_endian_mmio = 1,
	.es = 1,
	.have_sysif_regs = 0,
	.le_setup_buf = 1,
	.init = fsl_usb2_mpc5121_init,
	.exit = fsl_usb2_mpc5121_exit,
};
#endif /* CONFIG_PPC_MPC512x */

static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
	.have_sysif_regs = 1,
};

static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
	{ .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
	{ .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
#ifdef CONFIG_PPC_MPC512x
	{ .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
#endif
	{},
};

static struct platform_driver fsl_usb2_mph_dr_driver = {
	.driver = {
		.name = "fsl-usb2-mph-dr",
		.owner = THIS_MODULE,
		.of_match_table = fsl_usb2_mph_dr_of_match,
	},
	.probe	= fsl_usb2_mph_dr_of_probe,
	.remove	= __devexit_p(fsl_usb2_mph_dr_of_remove),
};

module_platform_driver(fsl_usb2_mph_dr_driver);

MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
MODULE_LICENSE("GPL");
Commit	Line	Data
126512e3 AG	1	/*
	2	* Setup platform devices needed by the Freescale multi-port host
	3	* and/or dual-role USB controller modules based on the description
	4	* in flat device tree.
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2 of the License, or (at your
	9	* option) any later version.
	10	*/
	11
	12	#include <linux/kernel.h>
	13	#include <linux/platform_device.h>
	14	#include <linux/fsl_devices.h>
	15	#include <linux/err.h>
	16	#include <linux/io.h>
	17	#include <linux/of_platform.h>
230f7ede	18	#include <linux/clk.h>
6eb0de82	19	#include <linux/module.h>
126512e3 AG	20
	21	struct fsl_usb2_dev_data {
	22	char dr_mode; / controller mode */
	23	char drivers[3]; / drivers to instantiate for this mode */
	24	enum fsl_usb2_operating_modes op_mode; /* operating mode */
	25	};
	26
	27	struct fsl_usb2_dev_data dr_mode_data[] __devinitdata = {
	28	{
	29	.dr_mode = "host",
	30	.drivers = { "fsl-ehci", NULL, NULL, },
	31	.op_mode = FSL_USB2_DR_HOST,
	32	},
	33	{
	34	.dr_mode = "otg",
	35	.drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", },
	36	.op_mode = FSL_USB2_DR_OTG,
	37	},
	38	{
	39	.dr_mode = "peripheral",
	40	.drivers = { "fsl-usb2-udc", NULL, NULL, },
	41	.op_mode = FSL_USB2_DR_DEVICE,
	42	},
	43	};
	44
	45	struct fsl_usb2_dev_data * __devinit get_dr_mode_data(struct device_node *np)
	46	{
	47	const unsigned char *prop;
	48	int i;
	49
	50	prop = of_get_property(np, "dr_mode", NULL);
	51	if (prop) {
	52	for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) {
	53	if (!strcmp(prop, dr_mode_data[i].dr_mode))
	54	return &dr_mode_data[i];
	55	}
	56	}
	57	pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n",
	58	np->full_name);
	59	return &dr_mode_data[0]; /* mode not specified, use host */
	60	}
	61
	62	static enum fsl_usb2_phy_modes __devinit determine_usb_phy(const char *phy_type)
	63	{
	64	if (!phy_type)
	65	return FSL_USB2_PHY_NONE;
	66	if (!strcasecmp(phy_type, "ulpi"))
	67	return FSL_USB2_PHY_ULPI;
	68	if (!strcasecmp(phy_type, "utmi"))
	69	return FSL_USB2_PHY_UTMI;
	70	if (!strcasecmp(phy_type, "utmi_wide"))
	71	return FSL_USB2_PHY_UTMI_WIDE;
	72	if (!strcasecmp(phy_type, "serial"))
	73	return FSL_USB2_PHY_SERIAL;
	74
	75	return FSL_USB2_PHY_NONE;
	76	}
	77
	78	struct platform_device * __devinit fsl_usb2_device_register(
	79	struct platform_device *ofdev,
	80	struct fsl_usb2_platform_data *pdata,
	81	const char *name, int id)
	82	{
	83	struct platform_device *pdev;
84	const struct resource *res = ofdev->resource;
85	unsigned int num = ofdev->num_resources;
86	int retval;
87
88	pdev = platform_device_alloc(name, id);
89	if (!pdev) {
90	retval = -ENOMEM;
91	goto error;
92	}
93
94	pdev->dev.parent = &ofdev->dev;
95
96	pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
97	pdev->dev.dma_mask = &pdev->archdata.dma_mask;
98	pdev->dev.dma_mask = ofdev->dev.dma_mask;
99
100	retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
101	if (retval)
102	goto error;
103
104	if (num) {
105	retval = platform_device_add_resources(pdev, res, num);
106	if (retval)
107	goto error;
108	}
109
110	retval = platform_device_add(pdev);
111	if (retval)
112	goto error;
113
114	return pdev;
115
116	error:
117	platform_device_put(pdev);
118	return ERR_PTR(retval);
119	}
120
121	static const struct of_device_id fsl_usb2_mph_dr_of_match[];
122
123	static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
124	{
125	struct device_node *np = ofdev->dev.of_node;
126	struct platform_device *usb_dev;
127	struct fsl_usb2_platform_data data, *pdata;
128	struct fsl_usb2_dev_data *dev_data;
129	const struct of_device_id *match;
130	const unsigned char *prop;
131	static unsigned int idx;
132	int i;
133
134	if (!of_device_is_available(np))
135	return -ENODEV;
136
137	match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
138	if (!match)
139	return -ENODEV;
140
141	pdata = &data;
142	if (match->data)
143	memcpy(pdata, match->data, sizeof(data));
144	else
145	memset(pdata, 0, sizeof(data));
146
147	dev_data = get_dr_mode_data(np);
148
149	if (of_device_is_compatible(np, "fsl-usb2-mph")) {
150	if (of_get_property(np, "port0", NULL))
151	pdata->port_enables \|= FSL_USB2_PORT0_ENABLED;
152
153	if (of_get_property(np, "port1", NULL))
154	pdata->port_enables \|= FSL_USB2_PORT1_ENABLED;
155
156	pdata->operating_mode = FSL_USB2_MPH_HOST;
157	} else {
230f7ede AG	158	if (of_get_property(np, "fsl,invert-drvvbus", NULL))
	159	pdata->invert_drvvbus = 1;
	160
	161	if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
	162	pdata->invert_pwr_fault = 1;
	163
126512e3 AG	164	/* setup mode selected in the device tree */
	165	pdata->operating_mode = dev_data->op_mode;
	166	}
	167
	168	prop = of_get_property(np, "phy_type", NULL);
	169	pdata->phy_mode = determine_usb_phy(prop);
	170
	171	for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
	172	if (!dev_data->drivers[i])
	173	continue;
	174	usb_dev = fsl_usb2_device_register(ofdev, pdata,
	175	dev_data->drivers[i], idx);
	176	if (IS_ERR(usb_dev)) {
	177	dev_err(&ofdev->dev, "Can't register usb device\n");
	178	return PTR_ERR(usb_dev);
	179	}
	180	}
	181	idx++;
	182	return 0;
	183	}
	184
	185	static int __devexit __unregister_subdev(struct device dev, void d)
	186	{
	187	platform_device_unregister(to_platform_device(dev));
	188	return 0;
	189	}
	190
	191	static int __devexit fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
	192	{
	193	device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
	194	return 0;
	195	}
	196
230f7ede AG	197	#ifdef CONFIG_PPC_MPC512x
	198
	199	#define USBGENCTRL 0x200 /* NOTE: big endian */
	200	#define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */
	201	#define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/
	202	#define GC_PPP (1 << 3) /* Inv. Port Power Polarity */
	203	#define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */
	204	#define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */
	205	#define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */
	206
	207	#define ISIPHYCTRL 0x204 /* NOTE: big endian */
	208	#define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */
	209	#define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */
	210	#define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */
	211	#define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */
	212	#define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */
	213
	214	int fsl_usb2_mpc5121_init(struct platform_device *pdev)
	215	{
	216	struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
	217	struct clk *clk;
	218	char clk_name[10];
	219	int base, clk_num;
	220
	221	base = pdev->resource->start & 0xf000;
	222	if (base == 0x3000)
	223	clk_num = 1;
	224	else if (base == 0x4000)
	225	clk_num = 2;
	226	else
	227	return -ENODEV;
	228
	229	snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num);
	230	clk = clk_get(&pdev->dev, clk_name);
	231	if (IS_ERR(clk)) {
	232	dev_err(&pdev->dev, "failed to get clk\n");
	233	return PTR_ERR(clk);
	234	}
	235
	236	clk_enable(clk);
	237	pdata->clk = clk;
	238
	239	if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
	240	u32 reg = 0;
	241
	242	if (pdata->invert_drvvbus)
	243	reg \|= GC_PPP;
	244
	245	if (pdata->invert_pwr_fault)
	246	reg \|= GC_PFP;
	247
	248	out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE \| PHYCTRL_PXE);
	249	out_be32(pdata->regs + USBGENCTRL, reg);
	250	}
	251	return 0;
	252	}
	253
	254	static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
	255	{
	256	struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
	257
	258	pdata->regs = NULL;
	259
	260	if (pdata->clk) {
261	clk_disable(pdata->clk);
262	clk_put(pdata->clk);
263	}
264	}
265
cc604ddd	266	static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
230f7ede AG	267	.big_endian_desc = 1,
	268	.big_endian_mmio = 1,
	269	.es = 1,
cc604ddd	270	.have_sysif_regs = 0,
230f7ede AG	271	.le_setup_buf = 1,
	272	.init = fsl_usb2_mpc5121_init,
	273	.exit = fsl_usb2_mpc5121_exit,
	274	};
	275	#endif /* CONFIG_PPC_MPC512x */
	276
cc604ddd PT	277	static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
	278	.have_sysif_regs = 1,
	279	};
	280
126512e3	281	static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
cc604ddd PT	282	{ .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
cc604ddd PT	283	{ .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
230f7ede AG	284	#ifdef CONFIG_PPC_MPC512x
	285	{ .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
	286	#endif
126512e3 AG	287	{},
	288	};
	289
	290	static struct platform_driver fsl_usb2_mph_dr_driver = {
	291	.driver = {
	292	.name = "fsl-usb2-mph-dr",
	293	.owner = THIS_MODULE,
	294	.of_match_table = fsl_usb2_mph_dr_of_match,
	295	},
	296	.probe = fsl_usb2_mph_dr_of_probe,
	297	.remove = __devexit_p(fsl_usb2_mph_dr_of_remove),
	298	};
	299
cc27c96c	300	module_platform_driver(fsl_usb2_mph_dr_driver);
126512e3 AG	301
	302	MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
	303	MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
	304	MODULE_LICENSE("GPL");