--- /dev/null
+/*
+ * 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;
+}
+
+/*
+ * interrupt functions
+ */
+void usbhs_xxxsts_clear(struct usbhs_priv *priv, u16 sts_reg, u16 bit)
+{
+ u16 pipe_mask = (u16)GENMASK(usbhs_get_dparam(priv, pipe_size), 0);
+
+ usbhs_write(priv, sts_reg, ~(1 << bit) & pipe_mask);
+}
+
+/*
+ * 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 cable;
+ 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) {
+ if (priv->edev) {
+ cable = extcon_get_cable_state(priv->edev, "USB-HOST");
+ if ((cable > 0 && id != USBHS_HOST) ||
+ (!cable && id != USBHS_GADGET)) {
+ dev_info(&pdev->dev,
+ "USB cable plugged in doesn't match the selected role!\n");
+ return;
+ }
+ }
+
+ 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;
+
+ switch (dparam->type) {
+ case USBHS_TYPE_R8A7790:
+ case USBHS_TYPE_R8A7791:
+ dparam->has_usb_dmac = 1;
+ break;
+ default:
+ break;
+ }
+
+ 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);
+
+ if (of_property_read_bool(pdev->dev.of_node, "extcon")) {
+ priv->edev = extcon_get_edev_by_phandle(&pdev->dev, 0);
+ if (IS_ERR(priv->edev))
+ return PTR_ERR(priv->edev);
+ }
+
+ /*
+ * 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 init 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
+ */
+ usbhsc_drvcllbck_notify_hotplug(pdev);
+
+ dev_info(&pdev->dev, "probed\n");
+
+ return ret;
+
+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>");
Code Review / kvmfornfv.git / blobdiff