drivers/usb/musb-new/musb_uboot.c

   1 #include <common.h>
   2 #include <console.h>
   3 #include <watchdog.h>
   4 #include <linux/err.h>
   5 #include <linux/errno.h>
   6 #include <linux/usb/ch9.h>
   7 #include <linux/usb/gadget.h>
   8
   9 #include <usb.h>
  10 #include "linux-compat.h"
  11 #include "usb-compat.h"
  12 #include "musb_core.h"
  13 #include "musb_host.h"
  14 #include "musb_gadget.h"
  15 #include "musb_uboot.h"
  16
  17 #ifdef CONFIG_USB_MUSB_HOST
  18 struct int_queue {
  19         struct usb_host_endpoint hep;
  20         struct urb urb;
  21 };
  22
  23 #if !CONFIG_IS_ENABLED(DM_USB)
  24 struct musb_host_data musb_host;
  25 #endif
  26
  27 static void musb_host_complete_urb(struct urb *urb)
  28 {
  29         urb->dev->status &= ~USB_ST_NOT_PROC;
  30         urb->dev->act_len = urb->actual_length;
  31 }
  32
  33 static void construct_urb(struct urb *urb, struct usb_host_endpoint *hep,
  34                           struct usb_device *dev, int endpoint_type,
  35                           unsigned long pipe, void *buffer, int len,
  36                           struct devrequest *setup, int interval)
  37 {
  38         int epnum = usb_pipeendpoint(pipe);
  39         int is_in = usb_pipein(pipe);
  40
  41         memset(urb, 0, sizeof(struct urb));
  42         memset(hep, 0, sizeof(struct usb_host_endpoint));
  43         INIT_LIST_HEAD(&hep->urb_list);
  44         INIT_LIST_HEAD(&urb->urb_list);
  45         urb->ep = hep;
  46         urb->complete = musb_host_complete_urb;
  47         urb->status = -EINPROGRESS;
  48         urb->dev = dev;
  49         urb->pipe = pipe;
  50         urb->transfer_buffer = buffer;
  51         urb->transfer_dma = (unsigned long)buffer;
  52         urb->transfer_buffer_length = len;
  53         urb->setup_packet = (unsigned char *)setup;
  54
  55         urb->ep->desc.wMaxPacketSize =
  56                 __cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
  57                                 dev->epmaxpacketout[epnum]);
  58         urb->ep->desc.bmAttributes = endpoint_type;
  59         urb->ep->desc.bEndpointAddress =
  60                 (is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
  61         urb->ep->desc.bInterval = interval;
  62 }
  63
  64 static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
  65 {
  66         struct musb *host = hcd->hcd_priv;
  67         int ret;
  68         unsigned long timeout;
  69
  70         ret = musb_urb_enqueue(hcd, urb, 0);
  71         if (ret < 0) {
  72                 printf("Failed to enqueue URB to controller\n");
  73                 return ret;
  74         }
  75
  76         timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
  77         do {
  78                 if (ctrlc())
  79                         return -EIO;
  80                 host->isr(0, host);
  81         } while (urb->status == -EINPROGRESS &&
  82                  get_timer(0) < timeout);
  83
  84         if (urb->status == -EINPROGRESS)
  85                 musb_urb_dequeue(hcd, urb, -ETIME);
  86
  87         return urb->status;
  88 }
  89
  90 static int _musb_submit_control_msg(struct musb_host_data *host,
  91         struct usb_device *dev, unsigned long pipe,
  92         void *buffer, int len, struct devrequest *setup)
  93 {
  94         construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_CONTROL,
  95                       pipe, buffer, len, setup, 0);
  96
  97         /* Fix speed for non hub-attached devices */
  98         if (!usb_dev_get_parent(dev))
  99                 dev->speed = host->host_speed;
 100
 101         return submit_urb(&host->hcd, &host->urb);
 102 }
 103
 104 static int _musb_submit_bulk_msg(struct musb_host_data *host,
 105         struct usb_device *dev, unsigned long pipe, void *buffer, int len)
 106 {
 107         construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_BULK,
 108                       pipe, buffer, len, NULL, 0);
 109         return submit_urb(&host->hcd, &host->urb);
 110 }
 111
 112 static int _musb_submit_int_msg(struct musb_host_data *host,
 113         struct usb_device *dev, unsigned long pipe,
 114         void *buffer, int len, int interval, bool nonblock)
 115 {
 116         construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_INT, pipe,
 117                       buffer, len, NULL, interval);
 118         return submit_urb(&host->hcd, &host->urb);
 119 }
 120
 121 static struct int_queue *_musb_create_int_queue(struct musb_host_data *host,
 122         struct usb_device *dev, unsigned long pipe, int queuesize,
 123         int elementsize, void *buffer, int interval)
 124 {
 125         struct int_queue *queue;
 126         int ret, index = usb_pipein(pipe) * 16 + usb_pipeendpoint(pipe);
 127
 128         if (queuesize != 1) {
 129                 printf("ERROR musb int-queues only support queuesize 1\n");
 130                 return NULL;
 131         }
 132
 133         if (dev->int_pending & (1 << index)) {
 134                 printf("ERROR int-urb is already pending on pipe %lx\n", pipe);
 135                 return NULL;
 136         }
 137
 138         queue = malloc(sizeof(*queue));
 139         if (!queue)
 140                 return NULL;
 141
 142         construct_urb(&queue->urb, &queue->hep, dev, USB_ENDPOINT_XFER_INT,
 143                       pipe, buffer, elementsize, NULL, interval);
 144
 145         ret = musb_urb_enqueue(&host->hcd, &queue->urb, 0);
 146         if (ret < 0) {
 147                 printf("Failed to enqueue URB to controller\n");
 148                 free(queue);
 149                 return NULL;
 150         }
 151
 152         dev->int_pending |= 1 << index;
 153         return queue;
 154 }
 155
 156 static int _musb_destroy_int_queue(struct musb_host_data *host,
 157         struct usb_device *dev, struct int_queue *queue)
 158 {
 159         int index = usb_pipein(queue->urb.pipe) * 16 +
 160                     usb_pipeendpoint(queue->urb.pipe);
 161
 162         if (queue->urb.status == -EINPROGRESS)
 163                 musb_urb_dequeue(&host->hcd, &queue->urb, -ETIME);
 164
 165         dev->int_pending &= ~(1 << index);
 166         free(queue);
 167         return 0;
 168 }
 169
 170 static void *_musb_poll_int_queue(struct musb_host_data *host,
 171         struct usb_device *dev, struct int_queue *queue)
 172 {
 173         if (queue->urb.status != -EINPROGRESS)
 174                 return NULL; /* URB has already completed in a prev. poll */
 175
 176         host->host->isr(0, host->host);
 177
 178         if (queue->urb.status != -EINPROGRESS)
 179                 return queue->urb.transfer_buffer; /* Done */
 180
 181         return NULL; /* URB still pending */
 182 }
 183
 184 static int _musb_reset_root_port(struct musb_host_data *host,
 185         struct usb_device *dev)
 186 {
 187         void *mbase = host->host->mregs;
 188         u8 power;
 189
 190         power = musb_readb(mbase, MUSB_POWER);
 191         power &= 0xf0;
 192         musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
 193         mdelay(50);
 194
 195         if (host->host->ops->pre_root_reset_end)
 196                 host->host->ops->pre_root_reset_end(host->host);
 197
 198         power = musb_readb(mbase, MUSB_POWER);
 199         musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
 200
 201         if (host->host->ops->post_root_reset_end)
 202                 host->host->ops->post_root_reset_end(host->host);
 203
 204         host->host->isr(0, host->host);
 205         host->host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
 206                         USB_SPEED_HIGH :
 207                         (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
 208                         USB_SPEED_FULL : USB_SPEED_LOW;
 209         mdelay((host->host_speed == USB_SPEED_LOW) ? 200 : 50);
 210
 211         return 0;
 212 }
 213
 214 int musb_lowlevel_init(struct musb_host_data *host)
 215 {
 216         void *mbase;
 217         /* USB spec says it may take up to 1 second for a device to connect */
 218         unsigned long timeout = get_timer(0) + 1000;
 219         int ret;
 220
 221         if (!host->host) {
 222                 printf("MUSB host is not registered\n");
 223                 return -ENODEV;
 224         }
 225
 226         ret = musb_start(host->host);
 227         if (ret)
 228                 return ret;
 229
 230         mbase = host->host->mregs;
 231         do {
 232                 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
 233                         break;
 234         } while (get_timer(0) < timeout);
 235         if (get_timer(0) >= timeout) {
 236                 musb_stop(host->host);
 237                 return -ENODEV;
 238         }
 239
 240         _musb_reset_root_port(host, NULL);
 241         host->host->is_active = 1;
 242         host->hcd.hcd_priv = host->host;
 243
 244         return 0;
 245 }
 246
 247 #if !CONFIG_IS_ENABLED(DM_USB)
 248 int usb_lowlevel_stop(int index)
 249 {
 250         if (!musb_host.host) {
 251                 printf("MUSB host is not registered\n");
 252                 return -ENODEV;
 253         }
 254
 255         musb_stop(musb_host.host);
 256         return 0;
 257 }
 258
 259 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
 260                             void *buffer, int length)
 261 {
 262         return _musb_submit_bulk_msg(&musb_host, dev, pipe, buffer, length);
 263 }
 264
 265 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
 266                        void *buffer, int length, struct devrequest *setup)
 267 {
 268         return _musb_submit_control_msg(&musb_host, dev, pipe, buffer, length, setup);
 269 }
 270
 271 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
 272                    void *buffer, int length, int interval, bool nonblock)
 273 {
 274         return _musb_submit_int_msg(&musb_host, dev, pipe, buffer, length,
 275                                     interval, nonblock);
 276 }
 277
 278 struct int_queue *create_int_queue(struct usb_device *dev,
 279                 unsigned long pipe, int queuesize, int elementsize,
 280                 void *buffer, int interval)
 281 {
 282         return _musb_create_int_queue(&musb_host, dev, pipe, queuesize, elementsize,
 283                                       buffer, interval);
 284 }
 285
 286 void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
 287 {
 288         return _musb_poll_int_queue(&musb_host, dev, queue);
 289 }
 290
 291 int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
 292 {
 293         return _musb_destroy_int_queue(&musb_host, dev, queue);
 294 }
 295
 296 int usb_reset_root_port(struct usb_device *dev)
 297 {
 298         return _musb_reset_root_port(&musb_host, dev);
 299 }
 300
 301 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 302 {
 303         return musb_lowlevel_init(&musb_host);
 304 }
 305 #endif /* !CONFIG_IS_ENABLED(DM_USB) */
 306
 307 #if CONFIG_IS_ENABLED(DM_USB)
 308 static int musb_submit_control_msg(struct udevice *dev, struct usb_device *udev,
 309                                    unsigned long pipe, void *buffer, int length,
 310                                    struct devrequest *setup)
 311 {
 312         struct musb_host_data *host = dev_get_priv(dev);
 313         return _musb_submit_control_msg(host, udev, pipe, buffer, length, setup);
 314 }
 315
 316 static int musb_submit_bulk_msg(struct udevice *dev, struct usb_device *udev,
 317                                 unsigned long pipe, void *buffer, int length)
 318 {
 319         struct musb_host_data *host = dev_get_priv(dev);
 320         return _musb_submit_bulk_msg(host, udev, pipe, buffer, length);
 321 }
 322
 323 static int musb_submit_int_msg(struct udevice *dev, struct usb_device *udev,
 324                                unsigned long pipe, void *buffer, int length,
 325                                int interval, bool nonblock)
 326 {
 327         struct musb_host_data *host = dev_get_priv(dev);
 328         return _musb_submit_int_msg(host, udev, pipe, buffer, length, interval,
 329                                     nonblock);
 330 }
 331
 332 static struct int_queue *musb_create_int_queue(struct udevice *dev,
 333                 struct usb_device *udev, unsigned long pipe, int queuesize,
 334                 int elementsize, void *buffer, int interval)
 335 {
 336         struct musb_host_data *host = dev_get_priv(dev);
 337         return _musb_create_int_queue(host, udev, pipe, queuesize, elementsize,
 338                                       buffer, interval);
 339 }
 340
 341 static void *musb_poll_int_queue(struct udevice *dev, struct usb_device *udev,
 342                                  struct int_queue *queue)
 343 {
 344         struct musb_host_data *host = dev_get_priv(dev);
 345         return _musb_poll_int_queue(host, udev, queue);
 346 }
 347
 348 static int musb_destroy_int_queue(struct udevice *dev, struct usb_device *udev,
 349                                   struct int_queue *queue)
 350 {
 351         struct musb_host_data *host = dev_get_priv(dev);
 352         return _musb_destroy_int_queue(host, udev, queue);
 353 }
 354
 355 static int musb_reset_root_port(struct udevice *dev, struct usb_device *udev)
 356 {
 357         struct musb_host_data *host = dev_get_priv(dev);
 358         return _musb_reset_root_port(host, udev);
 359 }
 360
 361 struct dm_usb_ops musb_usb_ops = {
 362         .control = musb_submit_control_msg,
 363         .bulk = musb_submit_bulk_msg,
 364         .interrupt = musb_submit_int_msg,
 365         .create_int_queue = musb_create_int_queue,
 366         .poll_int_queue = musb_poll_int_queue,
 367         .destroy_int_queue = musb_destroy_int_queue,
 368         .reset_root_port = musb_reset_root_port,
 369 };
 370 #endif /* CONFIG_IS_ENABLED(DM_USB) */
 371 #endif /* CONFIG_USB_MUSB_HOST */
 372
 373 #if defined(CONFIG_USB_MUSB_GADGET) && !CONFIG_IS_ENABLED(DM_USB_GADGET)
 374 static struct musb *gadget;
 375
 376 int usb_gadget_handle_interrupts(int index)
 377 {
 378         WATCHDOG_RESET();
 379         if (!gadget || !gadget->isr)
 380                 return -EINVAL;
 381
 382         return gadget->isr(0, gadget);
 383 }
 384
 385 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 386 {
 387         int ret;
 388
 389         if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
 390             !driver->setup) {
 391                 printf("bad parameter.\n");
 392                 return -EINVAL;
 393         }
 394
 395         if (!gadget) {
 396                 printf("Controller uninitialized\n");
 397                 return -ENXIO;
 398         }
 399
 400         ret = musb_gadget_start(&gadget->g, driver);
 401         if (ret < 0) {
 402                 printf("gadget_start failed with %d\n", ret);
 403                 return ret;
 404         }
 405
 406         ret = driver->bind(&gadget->g);
 407         if (ret < 0) {
 408                 printf("bind failed with %d\n", ret);
 409                 return ret;
 410         }
 411
 412         return 0;
 413 }
 414
 415 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 416 {
 417         if (driver->disconnect)
 418                 driver->disconnect(&gadget->g);
 419         if (driver->unbind)
 420                 driver->unbind(&gadget->g);
 421         return 0;
 422 }
 423 #endif /* CONFIG_USB_MUSB_GADGET */
 424
 425 struct musb *musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
 426                            void *ctl_regs)
 427 {
 428         struct musb **musbp;
 429
 430         switch (plat->mode) {
 431 #if defined(CONFIG_USB_MUSB_HOST) && !CONFIG_IS_ENABLED(DM_USB)
 432         case MUSB_HOST:
 433                 musbp = &musb_host.host;
 434                 break;
 435 #endif
 436 #if defined(CONFIG_USB_MUSB_GADGET) && !CONFIG_IS_ENABLED(DM_USB_GADGET)
 437         case MUSB_PERIPHERAL:
 438                 musbp = &gadget;
 439                 break;
 440 #endif
 441         default:
 442                 return ERR_PTR(-EINVAL);
 443         }
 444
 445         *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
 446         if (IS_ERR(*musbp)) {
 447                 printf("Failed to init the controller\n");
 448                 return ERR_CAST(*musbp);
 449         }
 450
 451         return *musbp;
 452 }