[deliverable/linux.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;
}

/*
 *		bus/vbus functions
 */
void usbhs_bus_send_sof_enable(struct usbhs_priv *priv)
{
	usbhs_bset(priv, DVSTCTR, (USBRST | UACT), UACT);
}

void usbhs_bus_send_reset(struct usbhs_priv *priv)
{
	usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST);
}

int usbhs_bus_get_speed(struct usbhs_priv *priv)
{
	u16 dvstctr = usbhs_read(priv, DVSTCTR);

	switch (RHST & dvstctr) {
	case RHST_LOW_SPEED:
		return USB_SPEED_LOW;
	case RHST_FULL_SPEED:
		return USB_SPEED_FULL;
	case RHST_HIGH_SPEED:
		return USB_SPEED_HIGH;
	}

	return USB_SPEED_UNKNOWN;
}

int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable)
{
	struct platform_device *pdev = usbhs_priv_to_pdev(priv);

	return usbhs_platform_call(priv, set_vbus, pdev, enable);
}

static void usbhsc_bus_init(struct usbhs_priv *priv)
{
	usbhs_write(priv, DVSTCTR, 0);

	usbhs_vbus_ctrl(priv, 0);
}

/*
 *		local functions
 */
static void usbhsc_set_buswait(struct usbhs_priv *priv)
{
	int wait = usbhs_get_dparam(priv, buswait_bwait);

	/* set bus wait if platform have */
	if (wait)
		usbhs_bset(priv, BUSWAIT, 0x000F, wait);
}

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

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

/*
 *		hotplug
 */
static void usbhsc_hotplug(struct usbhs_priv *priv)
{
	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);

		/* bus init */
		usbhsc_set_buswait(priv);
		usbhsc_bus_init(priv);

		/* 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);

		/* bus init */
		usbhsc_bus_init(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);
	}
}

/*
 *		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);
	usbhsc_hotplug(priv);
}

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 int usbhsc_suspend(struct device *dev)
{
	struct usbhs_priv *priv = dev_get_drvdata(dev);
	struct usbhs_mod *mod = usbhs_mod_get_current(priv);

	if (mod) {
		usbhs_mod_call(priv, stop, priv);
		usbhs_mod_change(priv, -1);
	}

	if (mod || !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
		usbhsc_power_ctrl(priv, 0);

	return 0;
}

static int usbhsc_resume(struct device *dev)
{
	struct usbhs_priv *priv = dev_get_drvdata(dev);
	struct platform_device *pdev = usbhs_priv_to_pdev(priv);

	usbhs_platform_call(priv, phy_reset, pdev);

	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
		usbhsc_power_ctrl(priv, 1);

	usbhsc_hotplug(priv);

	return 0;
}

static int usbhsc_runtime_nop(struct device *dev)
{
	/* Runtime PM callback shared between ->runtime_suspend()
	 * and ->runtime_resume(). Simply returns success.
	 *
	 * This driver re-initializes all registers after
	 * pm_runtime_get_sync() anyway so there is no need
	 * to save and restore registers here.
	 */
	return 0;
}

static const struct dev_pm_ops usbhsc_pm_ops = {
	.suspend		= usbhsc_suspend,
	.resume			= usbhsc_resume,
	.runtime_suspend	= usbhsc_runtime_nop,
	.runtime_resume		= usbhsc_runtime_nop,
};

static struct platform_driver renesas_usbhs_driver = {
	.driver		= {
		.name	= "renesas_usbhs",
		.pm	= &usbhsc_pm_ops,
	},
	.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
258485d9 KM	149	/*
	150	* bus/vbus functions
	151	*/
	152	void usbhs_bus_send_sof_enable(struct usbhs_priv *priv)
	153	{
	154	usbhs_bset(priv, DVSTCTR, (USBRST \| UACT), UACT);
	155	}
	156
	157	void usbhs_bus_send_reset(struct usbhs_priv *priv)
	158	{
	159	usbhs_bset(priv, DVSTCTR, (USBRST \| UACT), USBRST);
	160	}
	161
75587f52 KM	162	int usbhs_bus_get_speed(struct usbhs_priv *priv)
	163	{
	164	u16 dvstctr = usbhs_read(priv, DVSTCTR);
	165
	166	switch (RHST & dvstctr) {
	167	case RHST_LOW_SPEED:
	168	return USB_SPEED_LOW;
	169	case RHST_FULL_SPEED:
	170	return USB_SPEED_FULL;
	171	case RHST_HIGH_SPEED:
	172	return USB_SPEED_HIGH;
	173	}
	174
	175	return USB_SPEED_UNKNOWN;
	176	}
	177
258485d9 KM	178	int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable)
	179	{
	180	struct platform_device *pdev = usbhs_priv_to_pdev(priv);
	181
	182	return usbhs_platform_call(priv, set_vbus, pdev, enable);
	183	}
	184
	185	static void usbhsc_bus_init(struct usbhs_priv *priv)
	186	{
	187	usbhs_write(priv, DVSTCTR, 0);
	188
	189	usbhs_vbus_ctrl(priv, 0);
	190	}
	191
f1407d5c KM	192	/*
	193	* local functions
	194	*/
11935de5	195	static void usbhsc_set_buswait(struct usbhs_priv *priv)
f1407d5c KM	196	{
f1407d5c KM	197	int wait = usbhs_get_dparam(priv, buswait_bwait);
f1407d5c	198
11935de5 KM	199	/* set bus wait if platform have */
	200	if (wait)
	201	usbhs_bset(priv, BUSWAIT, 0x000F, wait);
f1407d5c KM	202	}
	203
	204	/*
	205	* platform default param
	206	*/
	207	static u32 usbhsc_default_pipe_type[] = {
	208	USB_ENDPOINT_XFER_CONTROL,
	209	USB_ENDPOINT_XFER_ISOC,
	210	USB_ENDPOINT_XFER_ISOC,
	211	USB_ENDPOINT_XFER_BULK,
	212	USB_ENDPOINT_XFER_BULK,
	213	USB_ENDPOINT_XFER_BULK,
	214	USB_ENDPOINT_XFER_INT,
	215	USB_ENDPOINT_XFER_INT,
	216	USB_ENDPOINT_XFER_INT,
	217	USB_ENDPOINT_XFER_INT,
	218	};
	219
	220	/*
6e267da8 KM	221	* power control
	222	*/
	223	static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
	224	{
	225	struct device *dev = usbhs_priv_to_dev(priv);
	226
	227	if (enable) {
	228	/* enable PM */
	229	pm_runtime_get_sync(dev);
	230
	231	/* USB on */
	232	usbhs_sys_clock_ctrl(priv, enable);
6e267da8 KM	233	} else {
6e267da8 KM	234	/* USB off */
6e267da8 KM	235	usbhs_sys_clock_ctrl(priv, enable);
	236
	237	/* disable PM */
	238	pm_runtime_put_sync(dev);
	239	}
	240	}
	241
	242	/*
ca8a282a	243	* hotplug
f1407d5c	244	*/
ca8a282a	245	static void usbhsc_hotplug(struct usbhs_priv *priv)
f1407d5c	246	{
f1407d5c KM	247	struct platform_device *pdev = usbhs_priv_to_pdev(priv);
	248	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
	249	int id;
	250	int enable;
	251	int ret;
	252
	253	/*
	254	* get vbus status from platform
	255	*/
	256	enable = usbhs_platform_call(priv, get_vbus, pdev);
	257
	258	/*
	259	* get id from platform
	260	*/
	261	id = usbhs_platform_call(priv, get_id, pdev);
	262
	263	if (enable && !mod) {
	264	ret = usbhs_mod_change(priv, id);
	265	if (ret < 0)
	266	return;
	267
	268	dev_dbg(&pdev->dev, "%s enable\n", __func__);
	269
6e267da8	270	/* power on */
b002ff6e KM	271	if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
b002ff6e KM	272	usbhsc_power_ctrl(priv, enable);
f1407d5c	273
258485d9 KM	274	/* bus init */
	275	usbhsc_set_buswait(priv);
	276	usbhsc_bus_init(priv);
	277
f1407d5c KM	278	/* module start */
	279	usbhs_mod_call(priv, start, priv);
	280
	281	} else if (!enable && mod) {
	282	dev_dbg(&pdev->dev, "%s disable\n", __func__);
	283
	284	/* module stop */
	285	usbhs_mod_call(priv, stop, priv);
	286
258485d9 KM	287	/* bus init */
	288	usbhsc_bus_init(priv);
	289
6e267da8	290	/* power off */
b002ff6e KM	291	if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
b002ff6e KM	292	usbhsc_power_ctrl(priv, enable);
f1407d5c KM	293
	294	usbhs_mod_change(priv, -1);
	295
	296	/* reset phy for next connection */
	297	usbhs_platform_call(priv, phy_reset, pdev);
	298	}
	299	}
	300
ca8a282a KM	301	/*
	302	* notify hotplug
	303	*/
	304	static void usbhsc_notify_hotplug(struct work_struct *work)
	305	{
	306	struct usbhs_priv *priv = container_of(work,
	307	struct usbhs_priv,
	308	notify_hotplug_work.work);
	309	usbhsc_hotplug(priv);
	310	}
	311
bc57381e	312	int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
f1407d5c	313	{
206dcc2c	314	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
bc57381e	315	int delay = usbhs_get_dparam(priv, detection_delay);
f1407d5c KM	316
	317	/*
	318	* This functions will be called in interrupt.
	319	* To make sure safety context,
	320	* use workqueue for usbhs_notify_hotplug
	321	*/
bc57381e	322	schedule_delayed_work(&priv->notify_hotplug_work, delay);
f1407d5c KM	323	return 0;
	324	}
	325
	326	/*
	327	* platform functions
	328	*/
	329	static int __devinit usbhs_probe(struct platform_device *pdev)
	330	{
	331	struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
	332	struct renesas_usbhs_driver_callback *dfunc;
	333	struct usbhs_priv *priv;
	334	struct resource *res;
	335	unsigned int irq;
	336	int ret;
	337
	338	/* check platform information */
	339	if (!info \|\|
b002ff6e	340	!info->platform_callback.get_id) {
f1407d5c KM	341	dev_err(&pdev->dev, "no platform information\n");
	342	return -EINVAL;
	343	}
	344
	345	/* platform data */
	346	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	347	irq = platform_get_irq(pdev, 0);
	348	if (!res \|\| (int)irq <= 0) {
	349	dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n");
	350	return -ENODEV;
	351	}
	352
	353	/* usb private data */
	354	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	355	if (!priv) {
	356	dev_err(&pdev->dev, "Could not allocate priv\n");
	357	return -ENOMEM;
	358	}
	359
	360	priv->base = ioremap_nocache(res->start, resource_size(res));
	361	if (!priv->base) {
	362	dev_err(&pdev->dev, "ioremap error.\n");
	363	ret = -ENOMEM;
	364	goto probe_end_kfree;
	365	}
	366
	367	/*
	368	* care platform info
	369	*/
	370	priv->pfunc = &info->platform_callback;
	371	priv->dparam = &info->driver_param;
	372
	373	/* set driver callback functions for platform */
	374	dfunc = &info->driver_callback;
	375	dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug;
	376
	377	/* set default param if platform doesn't have */
	378	if (!priv->dparam->pipe_type) {
	379	priv->dparam->pipe_type = usbhsc_default_pipe_type;
	380	priv->dparam->pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type);
	381	}
e73a9891 KM	382	if (!priv->dparam->pio_dma_border)
e73a9891 KM	383	priv->dparam->pio_dma_border = 64; /* 64byte */
f1407d5c	384
b002ff6e KM	385	/* FIXME */
	386	/* runtime power control ? */
	387	if (priv->pfunc->get_vbus)
	388	usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL);
	389
f1407d5c KM	390	/*
	391	* priv settings
	392	*/
	393	priv->irq = irq;
	394	priv->pdev = pdev;
bc57381e	395	INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
f1407d5c KM	396	spin_lock_init(usbhs_priv_to_lock(priv));
	397
	398	/* call pipe and module init */
	399	ret = usbhs_pipe_probe(priv);
	400	if (ret < 0)
97f93227	401	goto probe_end_iounmap;
f1407d5c	402
d3af90a5	403	ret = usbhs_fifo_probe(priv);
f1407d5c	404	if (ret < 0)
97f93227	405	goto probe_end_pipe_exit;
f1407d5c	406
d3af90a5 KM	407	ret = usbhs_mod_probe(priv);
	408	if (ret < 0)
	409	goto probe_end_fifo_exit;
	410
f1407d5c KM	411	/* dev_set_drvdata should be called after usbhs_mod_init */
	412	dev_set_drvdata(&pdev->dev, priv);
	413
	414	/*
	415	* deviece reset here because
	416	* USB device might be used in boot loader.
	417	*/
	418	usbhs_sys_clock_ctrl(priv, 0);
	419
	420	/*
	421	* platform call
	422	*
	423	* USB phy setup might depend on CPU/Board.
	424	* If platform has its callback functions,
	425	* call it here.
	426	*/
	427	ret = usbhs_platform_call(priv, hardware_init, pdev);
	428	if (ret < 0) {
	429	dev_err(&pdev->dev, "platform prove failed.\n");
97f93227	430	goto probe_end_mod_exit;
f1407d5c KM	431	}
	432
	433	/* reset phy for connection */
	434	usbhs_platform_call(priv, phy_reset, pdev);
	435
b002ff6e KM	436	/* power control */
	437	pm_runtime_enable(&pdev->dev);
	438	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
	439	usbhsc_power_ctrl(priv, 1);
	440	usbhs_mod_autonomy_mode(priv);
	441	}
	442
f1407d5c KM	443	/*
	444	* manual call notify_hotplug for cold plug
	445	*/
f1407d5c KM	446	ret = usbhsc_drvcllbck_notify_hotplug(pdev);
	447	if (ret < 0)
	448	goto probe_end_call_remove;
	449
	450	dev_info(&pdev->dev, "probed\n");
	451
	452	return ret;
	453
	454	probe_end_call_remove:
	455	usbhs_platform_call(priv, hardware_exit, pdev);
f1407d5c KM	456	probe_end_mod_exit:
f1407d5c KM	457	usbhs_mod_remove(priv);
d3af90a5 KM	458	probe_end_fifo_exit:
d3af90a5 KM	459	usbhs_fifo_remove(priv);
97f93227 KM	460	probe_end_pipe_exit:
97f93227 KM	461	usbhs_pipe_remove(priv);
f1407d5c KM	462	probe_end_iounmap:
	463	iounmap(priv->base);
	464	probe_end_kfree:
	465	kfree(priv);
	466
	467	dev_info(&pdev->dev, "probe failed\n");
	468
	469	return ret;
	470	}
	471
	472	static int __devexit usbhs_remove(struct platform_device *pdev)
	473	{
206dcc2c	474	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
af32fe51 KM	475	struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
af32fe51 KM	476	struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback;
f1407d5c KM	477
	478	dev_dbg(&pdev->dev, "usb remove\n");
	479
af32fe51 KM	480	dfunc->notify_hotplug = NULL;
af32fe51 KM	481
b002ff6e KM	482	/* power off */
	483	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
	484	usbhsc_power_ctrl(priv, 0);
f1407d5c	485
b002ff6e	486	pm_runtime_disable(&pdev->dev);
f1407d5c KM	487
f1407d5c KM	488	usbhs_platform_call(priv, hardware_exit, pdev);
f1407d5c	489	usbhs_mod_remove(priv);
d3af90a5	490	usbhs_fifo_remove(priv);
97f93227	491	usbhs_pipe_remove(priv);
f1407d5c KM	492	iounmap(priv->base);
	493	kfree(priv);
	494
	495	return 0;
	496	}
	497
ca8a282a KM	498	static int usbhsc_suspend(struct device *dev)
	499	{
	500	struct usbhs_priv *priv = dev_get_drvdata(dev);
	501	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
	502
	503	if (mod) {
	504	usbhs_mod_call(priv, stop, priv);
	505	usbhs_mod_change(priv, -1);
	506	}
	507
	508	if (mod \|\| !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
	509	usbhsc_power_ctrl(priv, 0);
	510
	511	return 0;
	512	}
	513
	514	static int usbhsc_resume(struct device *dev)
	515	{
	516	struct usbhs_priv *priv = dev_get_drvdata(dev);
	517	struct platform_device *pdev = usbhs_priv_to_pdev(priv);
	518
	519	usbhs_platform_call(priv, phy_reset, pdev);
	520
	521	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
	522	usbhsc_power_ctrl(priv, 1);
	523
	524	usbhsc_hotplug(priv);
	525
	526	return 0;
	527	}
	528
	529	static int usbhsc_runtime_nop(struct device *dev)
	530	{
	531	/* Runtime PM callback shared between ->runtime_suspend()
	532	* and ->runtime_resume(). Simply returns success.
	533	*
	534	* This driver re-initializes all registers after
	535	* pm_runtime_get_sync() anyway so there is no need
	536	* to save and restore registers here.
	537	*/
	538	return 0;
	539	}
	540
	541	static const struct dev_pm_ops usbhsc_pm_ops = {
	542	.suspend = usbhsc_suspend,
	543	.resume = usbhsc_resume,
	544	.runtime_suspend = usbhsc_runtime_nop,
	545	.runtime_resume = usbhsc_runtime_nop,
	546	};
	547
f1407d5c KM	548	static struct platform_driver renesas_usbhs_driver = {
	549	.driver = {
	550	.name = "renesas_usbhs",
ca8a282a	551	.pm = &usbhsc_pm_ops,
f1407d5c KM	552	},
	553	.probe = usbhs_probe,
	554	.remove = __devexit_p(usbhs_remove),
	555	};
	556
	557	static int __init usbhs_init(void)
	558	{
	559	return platform_driver_register(&renesas_usbhs_driver);
	560	}
	561
	562	static void __exit usbhs_exit(void)
	563	{
	564	platform_driver_unregister(&renesas_usbhs_driver);
	565	}
	566
	567	module_init(usbhs_init);
	568	module_exit(usbhs_exit);
	569
	570	MODULE_LICENSE("GPL");
	571	MODULE_DESCRIPTION("Renesas USB driver");
	572	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");