Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/drivers/usb/renesas_usbhs/common.c

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

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