drivers/usb/musb-new/musb_uboot.c

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