[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / renesas_usbhs / common.c

/*
 * Renesas USB driver
 *
 * Copyright (C) 2011 Renesas Solutions Corp.
 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
 *
 * This program is distributed in the hope that 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
 *
 */
#include <linux/io.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include "./common.h"

/*
 *		image of renesas_usbhs
 *
 * ex) gadget case

 * mod.c
 * mod_gadget.c
 * mod_host.c		pipe.c		fifo.c
 *
 *			+-------+	+-----------+
 *			| pipe0 |------>| fifo pio  |
 * +------------+	+-------+	+-----------+
 * | mod_gadget |=====> | pipe1 |--+
 * +------------+	+-------+  |	+-----------+
 *			| pipe2 |  |  +-| fifo dma0 |
 * +------------+	+-------+  |  |	+-----------+
 * | mod_host   |	| pipe3 |<-|--+
 * +------------+	+-------+  |	+-----------+
 *			| ....  |  +--->| fifo dma1 |
 *			| ....  |	+-----------+
 */


#define USBHSF_RUNTIME_PWCTRL	(1 << 0)

/* status */
#define usbhsc_flags_init(p)   do {(p)->flags = 0; } while (0)
#define usbhsc_flags_set(p, b) ((p)->flags |=  (b))
#define usbhsc_flags_clr(p, b) ((p)->flags &= ~(b))
#define usbhsc_flags_has(p, b) ((p)->flags &   (b))

/*
 * platform call back
 *
 * renesas usb support platform callback function.
 * Below macro call it.
 * if platform doesn't have callback, it return 0 (no error)
 */
#define usbhs_platform_call(priv, func, args...)\
	(!(priv) ? -ENODEV :			\
	 !((priv)->pfunc->func) ? 0 :		\
	 (priv)->pfunc->func(args))

/*
 *		common functions
 */
u16 usbhs_read(struct usbhs_priv *priv, u32 reg)
{
	return ioread16(priv->base + reg);
}

void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data)
{
	iowrite16(data, priv->base + reg);
}

void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data)
{
	u16 val = usbhs_read(priv, reg);

	val &= ~mask;
	val |= data & mask;

	usbhs_write(priv, reg, val);
}

struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev)
{
	return dev_get_drvdata(&pdev->dev);
}

/*
 *		syscfg functions
 */
void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable)
{
	usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0);
}

void usbhs_sys_hispeed_ctrl(struct usbhs_priv *priv, int enable)
{
	usbhs_bset(priv, SYSCFG, HSE, enable ? HSE : 0);
}

void usbhs_sys_usb_ctrl(struct usbhs_priv *priv, int enable)
{
	usbhs_bset(priv, SYSCFG, USBE, enable ? USBE : 0);
}

void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable)
{
	u16 mask = DCFM | DRPD | DPRPU;
	u16 val  = DCFM | DRPD;

	/*
	 * if enable
	 *
	 * - select Host mode
	 * - D+ Line/D- Line Pull-down
	 */
	usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
}

void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable)
{
	u16 mask = DCFM | DRPD | DPRPU;
	u16 val  = DPRPU;

	/*
	 * if enable
	 *
	 * - select Function mode
	 * - D+ Line Pull-up
	 */
	usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
}

/*
 *		frame functions
 */
int usbhs_frame_get_num(struct usbhs_priv *priv)
{
	return usbhs_read(priv, FRMNUM) & FRNM_MASK;
}

/*
 *		local functions
 */
static void usbhsc_bus_ctrl(struct usbhs_priv *priv, int enable)
{
	int wait = usbhs_get_dparam(priv, buswait_bwait);
	u16 data = 0;

	if (enable) {
		/* set bus wait if platform have */
		if (wait)
			usbhs_bset(priv, BUSWAIT, 0x000F, wait);
	}
	usbhs_write(priv, DVSTCTR, data);
}

/*
 *		platform default param
 */
static u32 usbhsc_default_pipe_type[] = {
		USB_ENDPOINT_XFER_CONTROL,
		USB_ENDPOINT_XFER_ISOC,
		USB_ENDPOINT_XFER_ISOC,
		USB_ENDPOINT_XFER_BULK,
		USB_ENDPOINT_XFER_BULK,
		USB_ENDPOINT_XFER_BULK,
		USB_ENDPOINT_XFER_INT,
		USB_ENDPOINT_XFER_INT,
		USB_ENDPOINT_XFER_INT,
		USB_ENDPOINT_XFER_INT,
};

/*
 *		power control
 */
static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
{
	struct device *dev = usbhs_priv_to_dev(priv);

	if (enable) {
		/* enable PM */
		pm_runtime_get_sync(dev);

		/* USB on */
		usbhs_sys_clock_ctrl(priv, enable);
		usbhsc_bus_ctrl(priv, enable);
	} else {
		/* USB off */
		usbhsc_bus_ctrl(priv, enable);
		usbhs_sys_clock_ctrl(priv, enable);

		/* disable PM */
		pm_runtime_put_sync(dev);
	}
}

/*
 *		notify hotplug
 */
static void usbhsc_notify_hotplug(struct work_struct *work)
{
	struct usbhs_priv *priv = container_of(work,
					       struct usbhs_priv,
					       notify_hotplug_work.work);
	struct platform_device *pdev = usbhs_priv_to_pdev(priv);
	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
	int id;
	int enable;
	int ret;

	/*
	 * get vbus status from platform
	 */
	enable = usbhs_platform_call(priv, get_vbus, pdev);

	/*
	 * get id from platform
	 */
	id = usbhs_platform_call(priv, get_id, pdev);

	if (enable && !mod) {
		ret = usbhs_mod_change(priv, id);
		if (ret < 0)
			return;

		dev_dbg(&pdev->dev, "%s enable\n", __func__);

		/* power on */
		if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
			usbhsc_power_ctrl(priv, enable);

		/* module start */
		usbhs_mod_call(priv, start, priv);

	} else if (!enable && mod) {
		dev_dbg(&pdev->dev, "%s disable\n", __func__);

		/* module stop */
		usbhs_mod_call(priv, stop, priv);

		/* power off */
		if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
			usbhsc_power_ctrl(priv, enable);

		usbhs_mod_change(priv, -1);

		/* reset phy for next connection */
		usbhs_platform_call(priv, phy_reset, pdev);
	}
}

int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
{
	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
	int delay = usbhs_get_dparam(priv, detection_delay);

	/*
	 * This functions will be called in interrupt.
	 * To make sure safety context,
	 * use workqueue for usbhs_notify_hotplug
	 */
	schedule_delayed_work(&priv->notify_hotplug_work, delay);
	return 0;
}

/*
 *		platform functions
 */
static int __devinit usbhs_probe(struct platform_device *pdev)
{
	struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
	struct renesas_usbhs_driver_callback *dfunc;
	struct usbhs_priv *priv;
	struct resource *res;
	unsigned int irq;
	int ret;

	/* check platform information */
	if (!info ||
	    !info->platform_callback.get_id) {
		dev_err(&pdev->dev, "no platform information\n");
		return -EINVAL;
	}

	/* platform data */
	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	irq = platform_get_irq(pdev, 0);
	if (!res || (int)irq <= 0) {
		dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n");
		return -ENODEV;
	}

	/* usb private data */
	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv) {
		dev_err(&pdev->dev, "Could not allocate priv\n");
		return -ENOMEM;
	}

	priv->base = ioremap_nocache(res->start, resource_size(res));
	if (!priv->base) {
		dev_err(&pdev->dev, "ioremap error.\n");
		ret = -ENOMEM;
		goto probe_end_kfree;
	}

	/*
	 * care platform info
	 */
	priv->pfunc	= &info->platform_callback;
	priv->dparam	= &info->driver_param;

	/* set driver callback functions for platform */
	dfunc			= &info->driver_callback;
	dfunc->notify_hotplug	= usbhsc_drvcllbck_notify_hotplug;

	/* set default param if platform doesn't have */
	if (!priv->dparam->pipe_type) {
		priv->dparam->pipe_type = usbhsc_default_pipe_type;
		priv->dparam->pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type);
	}
	if (!priv->dparam->pio_dma_border)
		priv->dparam->pio_dma_border = 64; /* 64byte */

	/* FIXME */
	/* runtime power control ? */
	if (priv->pfunc->get_vbus)
		usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL);

	/*
	 * priv settings
	 */
	priv->irq	= irq;
	priv->pdev	= pdev;
	INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
	spin_lock_init(usbhs_priv_to_lock(priv));

	/* call pipe and module init */
	ret = usbhs_pipe_probe(priv);
	if (ret < 0)
		goto probe_end_iounmap;

	ret = usbhs_fifo_probe(priv);
	if (ret < 0)
		goto probe_end_pipe_exit;

	ret = usbhs_mod_probe(priv);
	if (ret < 0)
		goto probe_end_fifo_exit;

	/* dev_set_drvdata should be called after usbhs_mod_init */
	dev_set_drvdata(&pdev->dev, priv);

	/*
	 * deviece reset here because
	 * USB device might be used in boot loader.
	 */
	usbhs_sys_clock_ctrl(priv, 0);

	/*
	 * platform call
	 *
	 * USB phy setup might depend on CPU/Board.
	 * If platform has its callback functions,
	 * call it here.
	 */
	ret = usbhs_platform_call(priv, hardware_init, pdev);
	if (ret < 0) {
		dev_err(&pdev->dev, "platform prove failed.\n");
		goto probe_end_mod_exit;
	}

	/* reset phy for connection */
	usbhs_platform_call(priv, phy_reset, pdev);

	/* power control */
	pm_runtime_enable(&pdev->dev);
	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
		usbhsc_power_ctrl(priv, 1);
		usbhs_mod_autonomy_mode(priv);
	}

	/*
	 * manual call notify_hotplug for cold plug
	 */
	ret = usbhsc_drvcllbck_notify_hotplug(pdev);
	if (ret < 0)
		goto probe_end_call_remove;

	dev_info(&pdev->dev, "probed\n");

	return ret;

probe_end_call_remove:
	usbhs_platform_call(priv, hardware_exit, pdev);
probe_end_mod_exit:
	usbhs_mod_remove(priv);
probe_end_fifo_exit:
	usbhs_fifo_remove(priv);
probe_end_pipe_exit:
	usbhs_pipe_remove(priv);
probe_end_iounmap:
	iounmap(priv->base);
probe_end_kfree:
	kfree(priv);

	dev_info(&pdev->dev, "probe failed\n");

	return ret;
}

static int __devexit usbhs_remove(struct platform_device *pdev)
{
	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
	struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
	struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback;

	dev_dbg(&pdev->dev, "usb remove\n");

	dfunc->notify_hotplug = NULL;

	/* power off */
	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
		usbhsc_power_ctrl(priv, 0);

	pm_runtime_disable(&pdev->dev);

	usbhs_platform_call(priv, hardware_exit, pdev);
	usbhs_mod_remove(priv);
	usbhs_fifo_remove(priv);
	usbhs_pipe_remove(priv);
	iounmap(priv->base);
	kfree(priv);

	return 0;
}

static struct platform_driver renesas_usbhs_driver = {
	.driver		= {
		.name	= "renesas_usbhs",
	},
	.probe		= usbhs_probe,
	.remove		= __devexit_p(usbhs_remove),
};

static int __init usbhs_init(void)
{
	return platform_driver_register(&renesas_usbhs_driver);
}

static void __exit usbhs_exit(void)
{
	platform_driver_unregister(&renesas_usbhs_driver);
}

module_init(usbhs_init);
module_exit(usbhs_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Renesas USB driver");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
Commit	Line	Data
f1407d5c KM	1	/*
	2	* Renesas USB driver
	3	*
	4	* Copyright (C) 2011 Renesas Solutions Corp.
	5	* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
	6	*
	7	* This program is distributed in the hope that it will be useful,
	8	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	9	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	10	* GNU General Public License for more details.
	11	*
	12	* You should have received a copy of the GNU General Public License
	13	* along with this program; if not, write to the Free Software
	14	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	15	*
	16	*/
	17	#include <linux/io.h>
	18	#include <linux/module.h>
	19	#include <linux/pm_runtime.h>
	20	#include <linux/slab.h>
	21	#include <linux/sysfs.h>
	22	#include "./common.h"
	23
233f519d KM	24	/*
	25	* image of renesas_usbhs
	26	*
	27	* ex) gadget case
	28
	29	* mod.c
	30	* mod_gadget.c
	31	* mod_host.c pipe.c fifo.c
	32	*
	33	* +-------+ +-----------+
	34	* \| pipe0 \|------>\| fifo pio \|
	35	* +------------+ +-------+ +-----------+
	36	* \| mod_gadget \|=====> \| pipe1 \|--+
	37	* +------------+ +-------+ \| +-----------+
	38	* \| pipe2 \| \| +-\| fifo dma0 \|
	39	* +------------+ +-------+ \| \| +-----------+
	40	* \| mod_host \| \| pipe3 \|<-\|--+
	41	* +------------+ +-------+ \| +-----------+
	42	* \| .... \| +--->\| fifo dma1 \|
	43	* \| .... \| +-----------+
	44	*/
	45
	46
b002ff6e KM	47	#define USBHSF_RUNTIME_PWCTRL (1 << 0)
	48
	49	/* status */
	50	#define usbhsc_flags_init(p) do {(p)->flags = 0; } while (0)
	51	#define usbhsc_flags_set(p, b) ((p)->flags \|= (b))
	52	#define usbhsc_flags_clr(p, b) ((p)->flags &= ~(b))
	53	#define usbhsc_flags_has(p, b) ((p)->flags & (b))
	54
f1407d5c KM	55	/*
	56	* platform call back
	57	*
	58	* renesas usb support platform callback function.
	59	* Below macro call it.
	60	* if platform doesn't have callback, it return 0 (no error)
	61	*/
	62	#define usbhs_platform_call(priv, func, args...)\
	63	(!(priv) ? -ENODEV : \
	64	!((priv)->pfunc->func) ? 0 : \
	65	(priv)->pfunc->func(args))
	66
	67	/*
	68	* common functions
	69	*/
	70	u16 usbhs_read(struct usbhs_priv *priv, u32 reg)
	71	{
	72	return ioread16(priv->base + reg);
	73	}
	74
	75	void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data)
	76	{
	77	iowrite16(data, priv->base + reg);
	78	}
	79
	80	void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data)
	81	{
	82	u16 val = usbhs_read(priv, reg);
	83
	84	val &= ~mask;
	85	val \|= data & mask;
	86
	87	usbhs_write(priv, reg, val);
	88	}
	89
206dcc2c KM	90	struct usbhs_priv usbhs_pdev_to_priv(struct platform_device pdev)
	91	{
	92	return dev_get_drvdata(&pdev->dev);
	93	}
	94
f1407d5c KM	95	/*
	96	* syscfg functions
	97	*/
	98	void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable)
	99	{
	100	usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0);
	101	}
	102
	103	void usbhs_sys_hispeed_ctrl(struct usbhs_priv *priv, int enable)
	104	{
	105	usbhs_bset(priv, SYSCFG, HSE, enable ? HSE : 0);
	106	}
	107
	108	void usbhs_sys_usb_ctrl(struct usbhs_priv *priv, int enable)
	109	{
	110	usbhs_bset(priv, SYSCFG, USBE, enable ? USBE : 0);
	111	}
	112
	113	void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable)
	114	{
	115	u16 mask = DCFM \| DRPD \| DPRPU;
	116	u16 val = DCFM \| DRPD;
	117
	118	/*
	119	* if enable
	120	*
	121	* - select Host mode
	122	* - D+ Line/D- Line Pull-down
	123	*/
	124	usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
	125	}
	126
	127	void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable)
	128	{
	129	u16 mask = DCFM \| DRPD \| DPRPU;
	130	u16 val = DPRPU;
	131
	132	/*
	133	* if enable
	134	*
	135	* - select Function mode
	136	* - D+ Line Pull-up
	137	*/
	138	usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
	139	}
	140
	141	/*
	142	* frame functions
	143	*/
	144	int usbhs_frame_get_num(struct usbhs_priv *priv)
	145	{
	146	return usbhs_read(priv, FRMNUM) & FRNM_MASK;
	147	}
	148
	149	/*
	150	* local functions
	151	*/
f1407d5c KM	152	static void usbhsc_bus_ctrl(struct usbhs_priv *priv, int enable)
	153	{
	154	int wait = usbhs_get_dparam(priv, buswait_bwait);
	155	u16 data = 0;
	156
	157	if (enable) {
	158	/* set bus wait if platform have */
	159	if (wait)
	160	usbhs_bset(priv, BUSWAIT, 0x000F, wait);
	161	}
	162	usbhs_write(priv, DVSTCTR, data);
	163	}
	164
	165	/*
	166	* platform default param
	167	*/
	168	static u32 usbhsc_default_pipe_type[] = {
	169	USB_ENDPOINT_XFER_CONTROL,
	170	USB_ENDPOINT_XFER_ISOC,
	171	USB_ENDPOINT_XFER_ISOC,
	172	USB_ENDPOINT_XFER_BULK,
	173	USB_ENDPOINT_XFER_BULK,
	174	USB_ENDPOINT_XFER_BULK,
	175	USB_ENDPOINT_XFER_INT,
	176	USB_ENDPOINT_XFER_INT,
	177	USB_ENDPOINT_XFER_INT,
	178	USB_ENDPOINT_XFER_INT,
	179	};
	180
	181	/*
6e267da8 KM	182	* power control
	183	*/
	184	static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
	185	{
	186	struct device *dev = usbhs_priv_to_dev(priv);
	187
	188	if (enable) {
	189	/* enable PM */
	190	pm_runtime_get_sync(dev);
	191
	192	/* USB on */
	193	usbhs_sys_clock_ctrl(priv, enable);
	194	usbhsc_bus_ctrl(priv, enable);
	195	} else {
	196	/* USB off */
	197	usbhsc_bus_ctrl(priv, enable);
	198	usbhs_sys_clock_ctrl(priv, enable);
	199
	200	/* disable PM */
	201	pm_runtime_put_sync(dev);
	202	}
	203	}
	204
	205	/*
	206	* notify hotplug
f1407d5c KM	207	*/
	208	static void usbhsc_notify_hotplug(struct work_struct *work)
	209	{
	210	struct usbhs_priv *priv = container_of(work,
	211	struct usbhs_priv,
bc57381e	212	notify_hotplug_work.work);
f1407d5c KM	213	struct platform_device *pdev = usbhs_priv_to_pdev(priv);
	214	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
	215	int id;
	216	int enable;
	217	int ret;
	218
	219	/*
	220	* get vbus status from platform
	221	*/
	222	enable = usbhs_platform_call(priv, get_vbus, pdev);
	223
	224	/*
	225	* get id from platform
	226	*/
	227	id = usbhs_platform_call(priv, get_id, pdev);
	228
	229	if (enable && !mod) {
	230	ret = usbhs_mod_change(priv, id);
	231	if (ret < 0)
	232	return;
	233
	234	dev_dbg(&pdev->dev, "%s enable\n", __func__);
	235
6e267da8	236	/* power on */
b002ff6e KM	237	if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
b002ff6e KM	238	usbhsc_power_ctrl(priv, enable);
f1407d5c KM	239
	240	/* module start */
	241	usbhs_mod_call(priv, start, priv);
	242
	243	} else if (!enable && mod) {
	244	dev_dbg(&pdev->dev, "%s disable\n", __func__);
	245
	246	/* module stop */
	247	usbhs_mod_call(priv, stop, priv);
	248
6e267da8	249	/* power off */
b002ff6e KM	250	if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
b002ff6e KM	251	usbhsc_power_ctrl(priv, enable);
f1407d5c KM	252
	253	usbhs_mod_change(priv, -1);
	254
	255	/* reset phy for next connection */
	256	usbhs_platform_call(priv, phy_reset, pdev);
	257	}
	258	}
	259
bc57381e	260	int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
f1407d5c	261	{
206dcc2c	262	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
bc57381e	263	int delay = usbhs_get_dparam(priv, detection_delay);
f1407d5c KM	264
	265	/*
	266	* This functions will be called in interrupt.
	267	* To make sure safety context,
	268	* use workqueue for usbhs_notify_hotplug
	269	*/
bc57381e	270	schedule_delayed_work(&priv->notify_hotplug_work, delay);
f1407d5c KM	271	return 0;
	272	}
	273
	274	/*
	275	* platform functions
	276	*/
	277	static int __devinit usbhs_probe(struct platform_device *pdev)
	278	{
	279	struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
	280	struct renesas_usbhs_driver_callback *dfunc;
	281	struct usbhs_priv *priv;
	282	struct resource *res;
	283	unsigned int irq;
	284	int ret;
	285
	286	/* check platform information */
	287	if (!info \|\|
b002ff6e	288	!info->platform_callback.get_id) {
f1407d5c KM	289	dev_err(&pdev->dev, "no platform information\n");
	290	return -EINVAL;
	291	}
	292
	293	/* platform data */
	294	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	295	irq = platform_get_irq(pdev, 0);
	296	if (!res \|\| (int)irq <= 0) {
	297	dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n");
	298	return -ENODEV;
	299	}
	300
	301	/* usb private data */
	302	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	303	if (!priv) {
	304	dev_err(&pdev->dev, "Could not allocate priv\n");
	305	return -ENOMEM;
	306	}
	307
	308	priv->base = ioremap_nocache(res->start, resource_size(res));
	309	if (!priv->base) {
	310	dev_err(&pdev->dev, "ioremap error.\n");
	311	ret = -ENOMEM;
	312	goto probe_end_kfree;
	313	}
	314
	315	/*
	316	* care platform info
	317	*/
	318	priv->pfunc = &info->platform_callback;
	319	priv->dparam = &info->driver_param;
	320
	321	/* set driver callback functions for platform */
	322	dfunc = &info->driver_callback;
	323	dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug;
	324
	325	/* set default param if platform doesn't have */
	326	if (!priv->dparam->pipe_type) {
	327	priv->dparam->pipe_type = usbhsc_default_pipe_type;
	328	priv->dparam->pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type);
	329	}
e73a9891 KM	330	if (!priv->dparam->pio_dma_border)
e73a9891 KM	331	priv->dparam->pio_dma_border = 64; /* 64byte */
f1407d5c	332
b002ff6e KM	333	/* FIXME */
	334	/* runtime power control ? */
	335	if (priv->pfunc->get_vbus)
	336	usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL);
	337
f1407d5c KM	338	/*
	339	* priv settings
	340	*/
	341	priv->irq = irq;
	342	priv->pdev = pdev;
bc57381e	343	INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
f1407d5c KM	344	spin_lock_init(usbhs_priv_to_lock(priv));
	345
	346	/* call pipe and module init */
	347	ret = usbhs_pipe_probe(priv);
	348	if (ret < 0)
97f93227	349	goto probe_end_iounmap;
f1407d5c	350
d3af90a5	351	ret = usbhs_fifo_probe(priv);
f1407d5c	352	if (ret < 0)
97f93227	353	goto probe_end_pipe_exit;
f1407d5c	354
d3af90a5 KM	355	ret = usbhs_mod_probe(priv);
	356	if (ret < 0)
	357	goto probe_end_fifo_exit;
	358
f1407d5c KM	359	/* dev_set_drvdata should be called after usbhs_mod_init */
	360	dev_set_drvdata(&pdev->dev, priv);
	361
	362	/*
	363	* deviece reset here because
	364	* USB device might be used in boot loader.
	365	*/
	366	usbhs_sys_clock_ctrl(priv, 0);
	367
	368	/*
	369	* platform call
	370	*
	371	* USB phy setup might depend on CPU/Board.
	372	* If platform has its callback functions,
	373	* call it here.
	374	*/
	375	ret = usbhs_platform_call(priv, hardware_init, pdev);
	376	if (ret < 0) {
	377	dev_err(&pdev->dev, "platform prove failed.\n");
97f93227	378	goto probe_end_mod_exit;
f1407d5c KM	379	}
	380
	381	/* reset phy for connection */
	382	usbhs_platform_call(priv, phy_reset, pdev);
	383
b002ff6e KM	384	/* power control */
	385	pm_runtime_enable(&pdev->dev);
	386	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
	387	usbhsc_power_ctrl(priv, 1);
	388	usbhs_mod_autonomy_mode(priv);
	389	}
	390
f1407d5c KM	391	/*
	392	* manual call notify_hotplug for cold plug
	393	*/
f1407d5c KM	394	ret = usbhsc_drvcllbck_notify_hotplug(pdev);
	395	if (ret < 0)
	396	goto probe_end_call_remove;
	397
	398	dev_info(&pdev->dev, "probed\n");
	399
	400	return ret;
	401
	402	probe_end_call_remove:
	403	usbhs_platform_call(priv, hardware_exit, pdev);
f1407d5c KM	404	probe_end_mod_exit:
f1407d5c KM	405	usbhs_mod_remove(priv);
d3af90a5 KM	406	probe_end_fifo_exit:
d3af90a5 KM	407	usbhs_fifo_remove(priv);
97f93227 KM	408	probe_end_pipe_exit:
97f93227 KM	409	usbhs_pipe_remove(priv);
f1407d5c KM	410	probe_end_iounmap:
	411	iounmap(priv->base);
	412	probe_end_kfree:
	413	kfree(priv);
	414
	415	dev_info(&pdev->dev, "probe failed\n");
	416
	417	return ret;
	418	}
	419
	420	static int __devexit usbhs_remove(struct platform_device *pdev)
	421	{
206dcc2c	422	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
af32fe51 KM	423	struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
af32fe51 KM	424	struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback;
f1407d5c KM	425
	426	dev_dbg(&pdev->dev, "usb remove\n");
	427
af32fe51 KM	428	dfunc->notify_hotplug = NULL;
af32fe51 KM	429
b002ff6e KM	430	/* power off */
	431	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
	432	usbhsc_power_ctrl(priv, 0);
f1407d5c	433
b002ff6e	434	pm_runtime_disable(&pdev->dev);
f1407d5c KM	435
f1407d5c KM	436	usbhs_platform_call(priv, hardware_exit, pdev);
f1407d5c	437	usbhs_mod_remove(priv);
d3af90a5	438	usbhs_fifo_remove(priv);
97f93227	439	usbhs_pipe_remove(priv);
f1407d5c KM	440	iounmap(priv->base);
	441	kfree(priv);
	442
	443	return 0;
	444	}
	445
	446	static struct platform_driver renesas_usbhs_driver = {
	447	.driver = {
	448	.name = "renesas_usbhs",
	449	},
	450	.probe = usbhs_probe,
	451	.remove = __devexit_p(usbhs_remove),
	452	};
	453
	454	static int __init usbhs_init(void)
	455	{
	456	return platform_driver_register(&renesas_usbhs_driver);
	457	}
	458
	459	static void __exit usbhs_exit(void)
	460	{
	461	platform_driver_unregister(&renesas_usbhs_driver);
	462	}
	463
	464	module_init(usbhs_init);
	465	module_exit(usbhs_exit);
	466
	467	MODULE_LICENSE("GPL");
	468	MODULE_DESCRIPTION("Renesas USB driver");
	469	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");