[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/err.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include "common.h"
#include "rcar2.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
 */
static void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable)
{
	usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0);
}

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

	if (has_otg)
		usbhs_bset(priv, DVSTCTR, (EXTLP | PWEN), (EXTLP | PWEN));

	/*
	 * 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 | HSE | USBE;
	u16 val  = HSE | USBE;

	/*
	 * if enable
	 *
	 * - select Function mode
	 * - D+ Line Pull-up is disabled
	 *      When D+ Line Pull-up is enabled,
	 *      calling usbhs_sys_function_pullup(,1)
	 */
	usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
}

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

void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode)
{
	usbhs_write(priv, TESTMODE, mode);
}

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

/*
 *		usb request functions
 */
void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
{
	u16 val;

	val = usbhs_read(priv, USBREQ);
	req->bRequest		= (val >> 8) & 0xFF;
	req->bRequestType	= (val >> 0) & 0xFF;

	req->wValue	= usbhs_read(priv, USBVAL);
	req->wIndex	= usbhs_read(priv, USBINDX);
	req->wLength	= usbhs_read(priv, USBLENG);
}

void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
{
	usbhs_write(priv, USBREQ,  (req->bRequest << 8) | req->bRequestType);
	usbhs_write(priv, USBVAL,  req->wValue);
	usbhs_write(priv, USBINDX, req->wIndex);
	usbhs_write(priv, USBLENG, req->wLength);

	usbhs_bset(priv, DCPCTR, SUREQ, SUREQ);
}

/*
 *		bus/vbus functions
 */
void usbhs_bus_send_sof_enable(struct usbhs_priv *priv)
{
	u16 status = usbhs_read(priv, DVSTCTR) & (USBRST | UACT);

	if (status != USBRST) {
		struct device *dev = usbhs_priv_to_dev(priv);
		dev_err(dev, "usbhs should be reset\n");
	}

	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);
}

/*
 *		device configuration
 */
int usbhs_set_device_config(struct usbhs_priv *priv, int devnum,
			   u16 upphub, u16 hubport, u16 speed)
{
	struct device *dev = usbhs_priv_to_dev(priv);
	u16 usbspd = 0;
	u32 reg = DEVADD0 + (2 * devnum);

	if (devnum > 10) {
		dev_err(dev, "cannot set speed to unknown device %d\n", devnum);
		return -EIO;
	}

	if (upphub > 0xA) {
		dev_err(dev, "unsupported hub number %d\n", upphub);
		return -EIO;
	}

	switch (speed) {
	case USB_SPEED_LOW:
		usbspd = USBSPD_SPEED_LOW;
		break;
	case USB_SPEED_FULL:
		usbspd = USBSPD_SPEED_FULL;
		break;
	case USB_SPEED_HIGH:
		usbspd = USBSPD_SPEED_HIGH;
		break;
	default:
		dev_err(dev, "unsupported speed %d\n", speed);
		return -EIO;
	}

	usbhs_write(priv, reg,	UPPHUB(upphub)	|
				HUBPORT(hubport)|
				USBSPD(usbspd));

	return 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
 */

/* commonly used on old SH-Mobile SoCs */
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,
};

/* commonly used on newer SH-Mobile and R-Car SoCs */
static u32 usbhsc_new_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_BULK,
		USB_ENDPOINT_XFER_BULK,
		USB_ENDPOINT_XFER_BULK,
		USB_ENDPOINT_XFER_BULK,
		USB_ENDPOINT_XFER_BULK,
		USB_ENDPOINT_XFER_BULK,
		USB_ENDPOINT_XFER_BULK,
};

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

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

		/* enable platform power */
		usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);

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

		/* disable platform power */
		usbhs_platform_call(priv, power_ctrl, pdev, priv->base, 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);
}

static 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,
			      msecs_to_jiffies(delay));
	return 0;
}

/*
 *		platform functions
 */
static const struct of_device_id usbhs_of_match[] = {
	{
		.compatible = "renesas,usbhs-r8a7790",
		.data = (void *)USBHS_TYPE_R8A7790,
	},
	{
		.compatible = "renesas,usbhs-r8a7791",
		.data = (void *)USBHS_TYPE_R8A7791,
	},
	{ },
};
MODULE_DEVICE_TABLE(of, usbhs_of_match);

static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev)
{
	struct renesas_usbhs_platform_info *info;
	struct renesas_usbhs_driver_param *dparam;
	const struct of_device_id *of_id = of_match_device(usbhs_of_match, dev);
	u32 tmp;
	int gpio;

	info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
	if (!info)
		return NULL;

	dparam = &info->driver_param;
	dparam->type = of_id ? (u32)of_id->data : 0;
	if (!of_property_read_u32(dev->of_node, "renesas,buswait", &tmp))
		dparam->buswait_bwait = tmp;
	gpio = of_get_named_gpio_flags(dev->of_node, "renesas,enable-gpio", 0,
				       NULL);
	if (gpio > 0)
		dparam->enable_gpio = gpio;

	return info;
}

static int usbhs_probe(struct platform_device *pdev)
{
	struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev);
	struct renesas_usbhs_driver_callback *dfunc;
	struct usbhs_priv *priv;
	struct resource *res, *irq_res;
	int ret;

	/* check device node */
	if (pdev->dev.of_node)
		info = pdev->dev.platform_data = usbhs_parse_dt(&pdev->dev);

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

	/* platform data */
	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	if (!irq_res) {
		dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n");
		return -ENODEV;
	}

	/* usb private data */
	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	priv->base = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(priv->base))
		return PTR_ERR(priv->base);

	/*
	 * care platform info
	 */

	memcpy(&priv->dparam,
	       &info->driver_param,
	       sizeof(struct renesas_usbhs_driver_param));

	switch (priv->dparam.type) {
	case USBHS_TYPE_R8A7790:
	case USBHS_TYPE_R8A7791:
		priv->pfunc = usbhs_rcar2_ops;
		if (!priv->dparam.pipe_type) {
			priv->dparam.pipe_type = usbhsc_new_pipe_type;
			priv->dparam.pipe_size =
				ARRAY_SIZE(usbhsc_new_pipe_type);
		}
		break;
	default:
		if (!info->platform_callback.get_id) {
			dev_err(&pdev->dev, "no platform callbacks");
			return -EINVAL;
		}
		memcpy(&priv->pfunc,
		       &info->platform_callback,
		       sizeof(struct renesas_usbhs_platform_callback));
		break;
	}

	/* 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_res->start;
	if (irq_res->flags & IORESOURCE_IRQ_SHAREABLE)
		priv->irqflags = IRQF_SHARED;
	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)
		return ret;

	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 */
	platform_set_drvdata(pdev, priv);

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

	/* check GPIO determining if USB function should be enabled */
	if (priv->dparam.enable_gpio) {
		gpio_request_one(priv->dparam.enable_gpio, GPIOF_IN, NULL);
		ret = !gpio_get_value(priv->dparam.enable_gpio);
		gpio_free(priv->dparam.enable_gpio);
		if (ret) {
			dev_warn(&pdev->dev,
				 "USB function not selected (GPIO %d)\n",
				 priv->dparam.enable_gpio);
			ret = -ENOTSUPP;
			goto probe_end_mod_exit;
		}
	}

	/*
	 * 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);

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

	return ret;
}

static int usbhs_remove(struct platform_device *pdev)
{
	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
	struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev);
	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);

	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);

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

	usbhs_platform_call(priv, phy_reset, pdev);

	usbhsc_drvcllbck_notify_hotplug(pdev);

	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,
		.of_match_table = of_match_ptr(usbhs_of_match),
	},
	.probe		= usbhs_probe,
	.remove		= usbhs_remove,
};

module_platform_driver(renesas_usbhs_driver);

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	*/
148e1134	17	#include <linux/err.h>
8ecef00f	18	#include <linux/gpio.h>
f1407d5c KM	19	#include <linux/io.h>
f1407d5c KM	20	#include <linux/module.h>
b854100e YS	21	#include <linux/of_device.h>
b854100e YS	22	#include <linux/of_gpio.h>
f1407d5c KM	23	#include <linux/pm_runtime.h>
	24	#include <linux/slab.h>
	25	#include <linux/sysfs.h>
cc502bb7	26	#include "common.h"
8ecef00f	27	#include "rcar2.h"
f1407d5c	28
233f519d KM	29	/*
	30	* image of renesas_usbhs
	31	*
	32	* ex) gadget case
	33
	34	* mod.c
	35	* mod_gadget.c
	36	* mod_host.c pipe.c fifo.c
	37	*
	38	* +-------+ +-----------+
	39	* \| pipe0 \|------>\| fifo pio \|
	40	* +------------+ +-------+ +-----------+
	41	* \| mod_gadget \|=====> \| pipe1 \|--+
	42	* +------------+ +-------+ \| +-----------+
	43	* \| pipe2 \| \| +-\| fifo dma0 \|
	44	* +------------+ +-------+ \| \| +-----------+
	45	* \| mod_host \| \| pipe3 \|<-\|--+
	46	* +------------+ +-------+ \| +-----------+
	47	* \| .... \| +--->\| fifo dma1 \|
	48	* \| .... \| +-----------+
	49	*/
	50
	51
b002ff6e KM	52	#define USBHSF_RUNTIME_PWCTRL (1 << 0)
	53
	54	/* status */
	55	#define usbhsc_flags_init(p) do {(p)->flags = 0; } while (0)
	56	#define usbhsc_flags_set(p, b) ((p)->flags \|= (b))
	57	#define usbhsc_flags_clr(p, b) ((p)->flags &= ~(b))
	58	#define usbhsc_flags_has(p, b) ((p)->flags & (b))
	59
f1407d5c KM	60	/*
	61	* platform call back
	62	*
	63	* renesas usb support platform callback function.
	64	* Below macro call it.
	65	* if platform doesn't have callback, it return 0 (no error)
	66	*/
	67	#define usbhs_platform_call(priv, func, args...)\
	68	(!(priv) ? -ENODEV : \
48298206 KM	69	!((priv)->pfunc.func) ? 0 : \
48298206 KM	70	(priv)->pfunc.func(args))
f1407d5c KM	71
	72	/*
	73	* common functions
	74	*/
	75	u16 usbhs_read(struct usbhs_priv *priv, u32 reg)
	76	{
	77	return ioread16(priv->base + reg);
	78	}
	79
	80	void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data)
	81	{
	82	iowrite16(data, priv->base + reg);
	83	}
	84
	85	void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data)
	86	{
	87	u16 val = usbhs_read(priv, reg);
	88
	89	val &= ~mask;
	90	val \|= data & mask;
	91
	92	usbhs_write(priv, reg, val);
	93	}
	94
206dcc2c KM	95	struct usbhs_priv usbhs_pdev_to_priv(struct platform_device pdev)
	96	{
	97	return dev_get_drvdata(&pdev->dev);
	98	}
	99
f1407d5c KM	100	/*
	101	* syscfg functions
	102	*/
76190152	103	static void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable)
f1407d5c KM	104	{
	105	usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0);
	106	}
	107
f1407d5c KM	108	void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable)
f1407d5c KM	109	{
3244a7b4 KM	110	u16 mask = DCFM \| DRPD \| DPRPU \| HSE \| USBE;
3244a7b4 KM	111	u16 val = DCFM \| DRPD \| HSE \| USBE;
f427eb64 KM	112	int has_otg = usbhs_get_dparam(priv, has_otg);
	113
	114	if (has_otg)
	115	usbhs_bset(priv, DVSTCTR, (EXTLP \| PWEN), (EXTLP \| PWEN));
f1407d5c KM	116
	117	/*
	118	* if enable
	119	*
	120	* - select Host mode
	121	* - D+ Line/D- Line Pull-down
	122	*/
	123	usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
	124	}
	125
	126	void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable)
	127	{
3244a7b4	128	u16 mask = DCFM \| DRPD \| DPRPU \| HSE \| USBE;
04a5def3	129	u16 val = HSE \| USBE;
f1407d5c KM	130
	131	/*
	132	* if enable
	133	*
	134	* - select Function mode
04a5def3 TK	135	* - D+ Line Pull-up is disabled
	136	* When D+ Line Pull-up is enabled,
	137	* calling usbhs_sys_function_pullup(,1)
f1407d5c KM	138	*/
	139	usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
	140	}
	141
4cd2f599	142	void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable)
	143	{
	144	usbhs_bset(priv, SYSCFG, DPRPU, enable ? DPRPU : 0);
	145	}
	146
dfbb7f4f KM	147	void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode)
	148	{
	149	usbhs_write(priv, TESTMODE, mode);
	150	}
	151
f1407d5c KM	152	/*
	153	* frame functions
	154	*/
	155	int usbhs_frame_get_num(struct usbhs_priv *priv)
	156	{
	157	return usbhs_read(priv, FRMNUM) & FRNM_MASK;
	158	}
	159
ef8bedb9 KM	160	/*
	161	* usb request functions
	162	*/
	163	void usbhs_usbreq_get_val(struct usbhs_priv priv, struct usb_ctrlrequest req)
	164	{
	165	u16 val;
	166
	167	val = usbhs_read(priv, USBREQ);
	168	req->bRequest = (val >> 8) & 0xFF;
	169	req->bRequestType = (val >> 0) & 0xFF;
	170
	171	req->wValue = usbhs_read(priv, USBVAL);
	172	req->wIndex = usbhs_read(priv, USBINDX);
	173	req->wLength = usbhs_read(priv, USBLENG);
	174	}
	175
	176	void usbhs_usbreq_set_val(struct usbhs_priv priv, struct usb_ctrlrequest req)
	177	{
	178	usbhs_write(priv, USBREQ, (req->bRequest << 8) \| req->bRequestType);
	179	usbhs_write(priv, USBVAL, req->wValue);
	180	usbhs_write(priv, USBINDX, req->wIndex);
	181	usbhs_write(priv, USBLENG, req->wLength);
	182
	183	usbhs_bset(priv, DCPCTR, SUREQ, SUREQ);
	184	}
	185
258485d9 KM	186	/*
	187	* bus/vbus functions
	188	*/
	189	void usbhs_bus_send_sof_enable(struct usbhs_priv *priv)
	190	{
a9be4a45 KM	191	u16 status = usbhs_read(priv, DVSTCTR) & (USBRST \| UACT);
	192
	193	if (status != USBRST) {
	194	struct device *dev = usbhs_priv_to_dev(priv);
	195	dev_err(dev, "usbhs should be reset\n");
	196	}
	197
258485d9 KM	198	usbhs_bset(priv, DVSTCTR, (USBRST \| UACT), UACT);
	199	}
	200
	201	void usbhs_bus_send_reset(struct usbhs_priv *priv)
	202	{
	203	usbhs_bset(priv, DVSTCTR, (USBRST \| UACT), USBRST);
	204	}
	205
75587f52 KM	206	int usbhs_bus_get_speed(struct usbhs_priv *priv)
	207	{
	208	u16 dvstctr = usbhs_read(priv, DVSTCTR);
	209
	210	switch (RHST & dvstctr) {
	211	case RHST_LOW_SPEED:
	212	return USB_SPEED_LOW;
	213	case RHST_FULL_SPEED:
	214	return USB_SPEED_FULL;
	215	case RHST_HIGH_SPEED:
	216	return USB_SPEED_HIGH;
	217	}
	218
	219	return USB_SPEED_UNKNOWN;
	220	}
	221
258485d9 KM	222	int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable)
	223	{
	224	struct platform_device *pdev = usbhs_priv_to_pdev(priv);
	225
	226	return usbhs_platform_call(priv, set_vbus, pdev, enable);
	227	}
	228
	229	static void usbhsc_bus_init(struct usbhs_priv *priv)
	230	{
	231	usbhs_write(priv, DVSTCTR, 0);
	232
	233	usbhs_vbus_ctrl(priv, 0);
	234	}
	235
eb05191f KM	236	/*
	237	* device configuration
	238	*/
3dd49268	239	int usbhs_set_device_config(struct usbhs_priv *priv, int devnum,
eb05191f KM	240	u16 upphub, u16 hubport, u16 speed)
	241	{
	242	struct device *dev = usbhs_priv_to_dev(priv);
	243	u16 usbspd = 0;
	244	u32 reg = DEVADD0 + (2 * devnum);
	245
	246	if (devnum > 10) {
	247	dev_err(dev, "cannot set speed to unknown device %d\n", devnum);
	248	return -EIO;
	249	}
	250
	251	if (upphub > 0xA) {
	252	dev_err(dev, "unsupported hub number %d\n", upphub);
	253	return -EIO;
	254	}
	255
	256	switch (speed) {
	257	case USB_SPEED_LOW:
	258	usbspd = USBSPD_SPEED_LOW;
	259	break;
	260	case USB_SPEED_FULL:
	261	usbspd = USBSPD_SPEED_FULL;
	262	break;
	263	case USB_SPEED_HIGH:
	264	usbspd = USBSPD_SPEED_HIGH;
	265	break;
	266	default:
	267	dev_err(dev, "unsupported speed %d\n", speed);
	268	return -EIO;
	269	}
	270
	271	usbhs_write(priv, reg, UPPHUB(upphub) \|
	272	HUBPORT(hubport)\|
	273	USBSPD(usbspd));
	274
	275	return 0;
	276	}
	277
f1407d5c KM	278	/*
	279	* local functions
	280	*/
11935de5	281	static void usbhsc_set_buswait(struct usbhs_priv *priv)
f1407d5c KM	282	{
f1407d5c KM	283	int wait = usbhs_get_dparam(priv, buswait_bwait);
f1407d5c	284
11935de5 KM	285	/* set bus wait if platform have */
	286	if (wait)
	287	usbhs_bset(priv, BUSWAIT, 0x000F, wait);
f1407d5c KM	288	}
	289
	290	/*
	291	* platform default param
	292	*/
8ecef00f UH	293
8ecef00f UH	294	/* commonly used on old SH-Mobile SoCs */
f1407d5c KM	295	static u32 usbhsc_default_pipe_type[] = {
	296	USB_ENDPOINT_XFER_CONTROL,
	297	USB_ENDPOINT_XFER_ISOC,
	298	USB_ENDPOINT_XFER_ISOC,
	299	USB_ENDPOINT_XFER_BULK,
	300	USB_ENDPOINT_XFER_BULK,
	301	USB_ENDPOINT_XFER_BULK,
	302	USB_ENDPOINT_XFER_INT,
	303	USB_ENDPOINT_XFER_INT,
	304	USB_ENDPOINT_XFER_INT,
	305	USB_ENDPOINT_XFER_INT,
	306	};
	307
8ecef00f UH	308	/* commonly used on newer SH-Mobile and R-Car SoCs */
	309	static u32 usbhsc_new_pipe_type[] = {
	310	USB_ENDPOINT_XFER_CONTROL,
	311	USB_ENDPOINT_XFER_ISOC,
	312	USB_ENDPOINT_XFER_ISOC,
	313	USB_ENDPOINT_XFER_BULK,
	314	USB_ENDPOINT_XFER_BULK,
	315	USB_ENDPOINT_XFER_BULK,
	316	USB_ENDPOINT_XFER_INT,
	317	USB_ENDPOINT_XFER_INT,
	318	USB_ENDPOINT_XFER_INT,
	319	USB_ENDPOINT_XFER_BULK,
	320	USB_ENDPOINT_XFER_BULK,
	321	USB_ENDPOINT_XFER_BULK,
	322	USB_ENDPOINT_XFER_BULK,
	323	USB_ENDPOINT_XFER_BULK,
	324	USB_ENDPOINT_XFER_BULK,
	325	USB_ENDPOINT_XFER_BULK,
	326	};
	327
f1407d5c	328	/*
6e267da8 KM	329	* power control
	330	*/
	331	static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
	332	{
f1ee56a0	333	struct platform_device *pdev = usbhs_priv_to_pdev(priv);
6e267da8 KM	334	struct device *dev = usbhs_priv_to_dev(priv);
	335
	336	if (enable) {
	337	/* enable PM */
	338	pm_runtime_get_sync(dev);
	339
f1ee56a0 KM	340	/* enable platform power */
	341	usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);
	342
6e267da8 KM	343	/* USB on */
6e267da8 KM	344	usbhs_sys_clock_ctrl(priv, enable);
6e267da8 KM	345	} else {
6e267da8 KM	346	/* USB off */
6e267da8 KM	347	usbhs_sys_clock_ctrl(priv, enable);
6e267da8 KM	348
f1ee56a0 KM	349	/* disable platform power */
	350	usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);
	351
6e267da8 KM	352	/* disable PM */
	353	pm_runtime_put_sync(dev);
	354	}
	355	}
	356
	357	/*
ca8a282a	358	* hotplug
f1407d5c	359	*/
ca8a282a	360	static void usbhsc_hotplug(struct usbhs_priv *priv)
f1407d5c	361	{
f1407d5c KM	362	struct platform_device *pdev = usbhs_priv_to_pdev(priv);
	363	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
	364	int id;
	365	int enable;
	366	int ret;
	367
	368	/*
	369	* get vbus status from platform
	370	*/
	371	enable = usbhs_platform_call(priv, get_vbus, pdev);
	372
	373	/*
	374	* get id from platform
	375	*/
	376	id = usbhs_platform_call(priv, get_id, pdev);
	377
	378	if (enable && !mod) {
	379	ret = usbhs_mod_change(priv, id);
	380	if (ret < 0)
	381	return;
	382
	383	dev_dbg(&pdev->dev, "%s enable\n", __func__);
	384
6e267da8	385	/* power on */
b002ff6e KM	386	if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
b002ff6e KM	387	usbhsc_power_ctrl(priv, enable);
f1407d5c	388
258485d9 KM	389	/* bus init */
	390	usbhsc_set_buswait(priv);
	391	usbhsc_bus_init(priv);
	392
f1407d5c KM	393	/* module start */
	394	usbhs_mod_call(priv, start, priv);
	395
	396	} else if (!enable && mod) {
	397	dev_dbg(&pdev->dev, "%s disable\n", __func__);
	398
	399	/* module stop */
	400	usbhs_mod_call(priv, stop, priv);
	401
258485d9 KM	402	/* bus init */
	403	usbhsc_bus_init(priv);
	404
6e267da8	405	/* power off */
b002ff6e KM	406	if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
b002ff6e KM	407	usbhsc_power_ctrl(priv, enable);
f1407d5c KM	408
	409	usbhs_mod_change(priv, -1);
	410
	411	/* reset phy for next connection */
	412	usbhs_platform_call(priv, phy_reset, pdev);
	413	}
	414	}
	415
ca8a282a KM	416	/*
	417	* notify hotplug
	418	*/
	419	static void usbhsc_notify_hotplug(struct work_struct *work)
	420	{
	421	struct usbhs_priv *priv = container_of(work,
	422	struct usbhs_priv,
	423	notify_hotplug_work.work);
	424	usbhsc_hotplug(priv);
	425	}
	426
b4fcea2a	427	static int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
f1407d5c	428	{
206dcc2c	429	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
bc57381e	430	int delay = usbhs_get_dparam(priv, detection_delay);
f1407d5c KM	431
	432	/*
	433	* This functions will be called in interrupt.
	434	* To make sure safety context,
	435	* use workqueue for usbhs_notify_hotplug
	436	*/
a49a88f1 KM	437	schedule_delayed_work(&priv->notify_hotplug_work,
a49a88f1 KM	438	msecs_to_jiffies(delay));
f1407d5c KM	439	return 0;
	440	}
	441
	442	/*
	443	* platform functions
	444	*/
b854100e YS	445	static const struct of_device_id usbhs_of_match[] = {
	446	{
	447	.compatible = "renesas,usbhs-r8a7790",
	448	.data = (void *)USBHS_TYPE_R8A7790,
	449	},
	450	{
	451	.compatible = "renesas,usbhs-r8a7791",
	452	.data = (void *)USBHS_TYPE_R8A7791,
	453	},
	454	{ },
	455	};
	456	MODULE_DEVICE_TABLE(of, usbhs_of_match);
	457
	458	static struct renesas_usbhs_platform_info usbhs_parse_dt(struct device dev)
	459	{
	460	struct renesas_usbhs_platform_info *info;
	461	struct renesas_usbhs_driver_param *dparam;
	462	const struct of_device_id *of_id = of_match_device(usbhs_of_match, dev);
	463	u32 tmp;
	464	int gpio;
	465
	466	info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
	467	if (!info)
	468	return NULL;
	469
	470	dparam = &info->driver_param;
	471	dparam->type = of_id ? (u32)of_id->data : 0;
	472	if (!of_property_read_u32(dev->of_node, "renesas,buswait", &tmp))
	473	dparam->buswait_bwait = tmp;
	474	gpio = of_get_named_gpio_flags(dev->of_node, "renesas,enable-gpio", 0,
	475	NULL);
	476	if (gpio > 0)
	477	dparam->enable_gpio = gpio;
	478
	479	return info;
	480	}
	481
b7a8d17d	482	static int usbhs_probe(struct platform_device *pdev)
f1407d5c	483	{
ace0a5f9	484	struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev);
f1407d5c KM	485	struct renesas_usbhs_driver_callback *dfunc;
f1407d5c KM	486	struct usbhs_priv *priv;
53069af3	487	struct resource res, irq_res;
f1407d5c KM	488	int ret;
f1407d5c KM	489
b854100e YS	490	/* check device node */
	491	if (pdev->dev.of_node)
	492	info = pdev->dev.platform_data = usbhs_parse_dt(&pdev->dev);
	493
f1407d5c	494	/* check platform information */
8ecef00f	495	if (!info) {
f1407d5c KM	496	dev_err(&pdev->dev, "no platform information\n");
	497	return -EINVAL;
	498	}
	499
	500	/* platform data */
53069af3	501	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
687f16b8	502	if (!irq_res) {
f1407d5c KM	503	dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n");
	504	return -ENODEV;
	505	}
	506
	507	/* usb private data */
58efc77c	508	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
b1cb07cd	509	if (!priv)
f1407d5c	510	return -ENOMEM;
f1407d5c	511
687f16b8	512	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
148e1134 TR	513	priv->base = devm_ioremap_resource(&pdev->dev, res);
	514	if (IS_ERR(priv->base))
	515	return PTR_ERR(priv->base);
f1407d5c KM	516
	517	/*
	518	* care platform info
	519	*/
8ecef00f	520
48298206 KM	521	memcpy(&priv->dparam,
	522	&info->driver_param,
	523	sizeof(struct renesas_usbhs_driver_param));
f1407d5c	524
8ecef00f UH	525	switch (priv->dparam.type) {
	526	case USBHS_TYPE_R8A7790:
	527	case USBHS_TYPE_R8A7791:
	528	priv->pfunc = usbhs_rcar2_ops;
	529	if (!priv->dparam.pipe_type) {
	530	priv->dparam.pipe_type = usbhsc_new_pipe_type;
	531	priv->dparam.pipe_size =
	532	ARRAY_SIZE(usbhsc_new_pipe_type);
	533	}
	534	break;
	535	default:
	536	if (!info->platform_callback.get_id) {
	537	dev_err(&pdev->dev, "no platform callbacks");
	538	return -EINVAL;
	539	}
	540	memcpy(&priv->pfunc,
	541	&info->platform_callback,
	542	sizeof(struct renesas_usbhs_platform_callback));
	543	break;
	544	}
	545
f1407d5c KM	546	/* set driver callback functions for platform */
	547	dfunc = &info->driver_callback;
	548	dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug;
	549
	550	/* set default param if platform doesn't have */
48298206 KM	551	if (!priv->dparam.pipe_type) {
	552	priv->dparam.pipe_type = usbhsc_default_pipe_type;
	553	priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe_type);
f1407d5c	554	}
48298206 KM	555	if (!priv->dparam.pio_dma_border)
48298206 KM	556	priv->dparam.pio_dma_border = 64; /* 64byte */
f1407d5c	557
b002ff6e KM	558	/* FIXME */
b002ff6e KM	559	/* runtime power control ? */
48298206	560	if (priv->pfunc.get_vbus)
b002ff6e KM	561	usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL);
b002ff6e KM	562
f1407d5c KM	563	/*
	564	* priv settings
	565	*/
53069af3 SY	566	priv->irq = irq_res->start;
	567	if (irq_res->flags & IORESOURCE_IRQ_SHAREABLE)
	568	priv->irqflags = IRQF_SHARED;
f1407d5c	569	priv->pdev = pdev;
bc57381e	570	INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
f1407d5c KM	571	spin_lock_init(usbhs_priv_to_lock(priv));
	572
	573	/* call pipe and module init */
	574	ret = usbhs_pipe_probe(priv);
	575	if (ret < 0)
58efc77c	576	return ret;
f1407d5c	577
d3af90a5	578	ret = usbhs_fifo_probe(priv);
f1407d5c	579	if (ret < 0)
97f93227	580	goto probe_end_pipe_exit;
f1407d5c	581
d3af90a5 KM	582	ret = usbhs_mod_probe(priv);
	583	if (ret < 0)
	584	goto probe_end_fifo_exit;
	585
f1407d5c	586	/* dev_set_drvdata should be called after usbhs_mod_init */
c9a0552e	587	platform_set_drvdata(pdev, priv);
f1407d5c KM	588
	589	/*
	590	* deviece reset here because
	591	* USB device might be used in boot loader.
	592	*/
	593	usbhs_sys_clock_ctrl(priv, 0);
	594
8ecef00f UH	595	/* check GPIO determining if USB function should be enabled */
	596	if (priv->dparam.enable_gpio) {
	597	gpio_request_one(priv->dparam.enable_gpio, GPIOF_IN, NULL);
	598	ret = !gpio_get_value(priv->dparam.enable_gpio);
	599	gpio_free(priv->dparam.enable_gpio);
	600	if (ret) {
	601	dev_warn(&pdev->dev,
	602	"USB function not selected (GPIO %d)\n",
	603	priv->dparam.enable_gpio);
	604	ret = -ENOTSUPP;
	605	goto probe_end_mod_exit;
	606	}
	607	}
	608
f1407d5c KM	609	/*
	610	* platform call
	611	*
	612	* USB phy setup might depend on CPU/Board.
	613	* If platform has its callback functions,
	614	* call it here.
	615	*/
	616	ret = usbhs_platform_call(priv, hardware_init, pdev);
	617	if (ret < 0) {
	618	dev_err(&pdev->dev, "platform prove failed.\n");
97f93227	619	goto probe_end_mod_exit;
f1407d5c KM	620	}
	621
	622	/* reset phy for connection */
	623	usbhs_platform_call(priv, phy_reset, pdev);
	624
b002ff6e KM	625	/* power control */
	626	pm_runtime_enable(&pdev->dev);
	627	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
	628	usbhsc_power_ctrl(priv, 1);
	629	usbhs_mod_autonomy_mode(priv);
	630	}
	631
f1407d5c KM	632	/*
	633	* manual call notify_hotplug for cold plug
	634	*/
f1407d5c KM	635	ret = usbhsc_drvcllbck_notify_hotplug(pdev);
	636	if (ret < 0)
	637	goto probe_end_call_remove;
	638
	639	dev_info(&pdev->dev, "probed\n");
	640
	641	return ret;
	642
	643	probe_end_call_remove:
	644	usbhs_platform_call(priv, hardware_exit, pdev);
f1407d5c KM	645	probe_end_mod_exit:
f1407d5c KM	646	usbhs_mod_remove(priv);
d3af90a5 KM	647	probe_end_fifo_exit:
d3af90a5 KM	648	usbhs_fifo_remove(priv);
97f93227 KM	649	probe_end_pipe_exit:
97f93227 KM	650	usbhs_pipe_remove(priv);
f1407d5c KM	651
	652	dev_info(&pdev->dev, "probe failed\n");
	653
	654	return ret;
	655	}
	656
fb4e98ab	657	static int usbhs_remove(struct platform_device *pdev)
f1407d5c	658	{
206dcc2c	659	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
ace0a5f9	660	struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev);
af32fe51	661	struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback;
f1407d5c KM	662
	663	dev_dbg(&pdev->dev, "usb remove\n");
	664
af32fe51 KM	665	dfunc->notify_hotplug = NULL;
af32fe51 KM	666
b002ff6e KM	667	/* power off */
	668	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
	669	usbhsc_power_ctrl(priv, 0);
f1407d5c	670
b002ff6e	671	pm_runtime_disable(&pdev->dev);
f1407d5c KM	672
f1407d5c KM	673	usbhs_platform_call(priv, hardware_exit, pdev);
f1407d5c	674	usbhs_mod_remove(priv);
d3af90a5	675	usbhs_fifo_remove(priv);
97f93227	676	usbhs_pipe_remove(priv);
f1407d5c KM	677
	678	return 0;
	679	}
	680
ca8a282a KM	681	static int usbhsc_suspend(struct device *dev)
	682	{
	683	struct usbhs_priv *priv = dev_get_drvdata(dev);
	684	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
	685
	686	if (mod) {
	687	usbhs_mod_call(priv, stop, priv);
	688	usbhs_mod_change(priv, -1);
	689	}
	690
	691	if (mod \|\| !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
	692	usbhsc_power_ctrl(priv, 0);
	693
	694	return 0;
	695	}
	696
	697	static int usbhsc_resume(struct device *dev)
	698	{
	699	struct usbhs_priv *priv = dev_get_drvdata(dev);
	700	struct platform_device *pdev = usbhs_priv_to_pdev(priv);
	701
ca8a282a KM	702	if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
	703	usbhsc_power_ctrl(priv, 1);
	704
5b50d3b5 KM	705	usbhs_platform_call(priv, phy_reset, pdev);
	706
	707	usbhsc_drvcllbck_notify_hotplug(pdev);
ca8a282a KM	708
	709	return 0;
	710	}
	711
	712	static int usbhsc_runtime_nop(struct device *dev)
	713	{
	714	/* Runtime PM callback shared between ->runtime_suspend()
	715	* and ->runtime_resume(). Simply returns success.
	716	*
	717	* This driver re-initializes all registers after
	718	* pm_runtime_get_sync() anyway so there is no need
	719	* to save and restore registers here.
	720	*/
	721	return 0;
	722	}
	723
	724	static const struct dev_pm_ops usbhsc_pm_ops = {
	725	.suspend = usbhsc_suspend,
	726	.resume = usbhsc_resume,
	727	.runtime_suspend = usbhsc_runtime_nop,
	728	.runtime_resume = usbhsc_runtime_nop,
	729	};
	730
f1407d5c KM	731	static struct platform_driver renesas_usbhs_driver = {
	732	.driver = {
	733	.name = "renesas_usbhs",
ca8a282a	734	.pm = &usbhsc_pm_ops,
b854100e	735	.of_match_table = of_match_ptr(usbhs_of_match),
f1407d5c KM	736	},
f1407d5c KM	737	.probe = usbhs_probe,
7690417d	738	.remove = usbhs_remove,
f1407d5c KM	739	};
f1407d5c KM	740
cc27c96c	741	module_platform_driver(renesas_usbhs_driver);
f1407d5c KM	742
	743	MODULE_LICENSE("GPL");
	744	MODULE_DESCRIPTION("Renesas USB driver");
	745	MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");