drivers/usb/musb-new/musb_uboot.c

   1 #include <common.h>
   2 #include <watchdog.h>
   3 #ifdef CONFIG_ARCH_SUNXI
   4 #include <asm/arch/usb_phy.h>
   5 #endif
   6 #include <asm/errno.h>
   7 #include <linux/usb/ch9.h>
   8 #include <linux/usb/gadget.h>
   9
  10 #include <usb.h>
  11 #include "linux-compat.h"
  12 #include "usb-compat.h"
  13 #include "musb_core.h"
  14 #include "musb_host.h"
  15 #include "musb_gadget.h"
  16 #include "musb_uboot.h"
  17
  18 #ifdef CONFIG_MUSB_HOST
  19 struct int_queue {
  20         struct usb_host_endpoint hep;
  21         struct urb urb;
  22 };
  23
  24 #ifndef CONFIG_DM_USB
  25 struct musb_host_data musb_host;
  26 #endif
  27
  28 static void musb_host_complete_urb(struct urb *urb)
  29 {
  30         urb->dev->status &= ~USB_ST_NOT_PROC;
  31         urb->dev->act_len = urb->actual_length;
  32 }
  33
  34 static void construct_urb(struct urb *urb, struct usb_host_endpoint *hep,
  35                           struct usb_device *dev, int endpoint_type,
  36                           unsigned long pipe, void *buffer, int len,
  37                           struct devrequest *setup, int interval)
  38 {
  39         int epnum = usb_pipeendpoint(pipe);
  40         int is_in = usb_pipein(pipe);
  41
  42         memset(urb, 0, sizeof(struct urb));
  43         memset(hep, 0, sizeof(struct usb_host_endpoint));
  44         INIT_LIST_HEAD(&hep->urb_list);
  45         INIT_LIST_HEAD(&urb->urb_list);
  46         urb->ep = hep;
  47         urb->complete = musb_host_complete_urb;
  48         urb->status = -EINPROGRESS;
  49         urb->dev = dev;
  50         urb->pipe = pipe;
  51         urb->transfer_buffer = buffer;
  52         urb->transfer_dma = (unsigned long)buffer;
  53         urb->transfer_buffer_length = len;
  54         urb->setup_packet = (unsigned char *)setup;
  55
  56         urb->ep->desc.wMaxPacketSize =
  57                 __cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
  58                                 dev->epmaxpacketout[epnum]);
  59         urb->ep->desc.bmAttributes = endpoint_type;
  60         urb->ep->desc.bEndpointAddress =
  61                 (is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
  62         urb->ep->desc.bInterval = interval;
  63 }
  64
  65 static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
  66 {
  67         struct musb *host = hcd->hcd_priv;
  68         int ret;
  69         unsigned long timeout;
  70
  71         ret = musb_urb_enqueue(hcd, urb, 0);
  72         if (ret < 0) {
  73                 printf("Failed to enqueue URB to controller\n");
  74                 return ret;
  75         }
  76
  77         timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
  78         do {
  79                 if (ctrlc())
  80                         return -EIO;
  81                 host->isr(0, host);
  82         } while (urb->status == -EINPROGRESS &&
  83                  get_timer(0) < timeout);
  84
  85         if (urb->status == -EINPROGRESS)
  86                 musb_urb_dequeue(hcd, urb, -ETIME);
  87
  88         return urb->status;
  89 }
  90
  91 static int _musb_submit_control_msg(struct musb_host_data *host,
  92         struct usb_device *dev, unsigned long pipe,
  93         void *buffer, int len, struct devrequest *setup)
  94 {
  95         construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_CONTROL,
  96                       pipe, buffer, len, setup, 0);
  97
  98         /* Fix speed for non hub-attached devices */
  99         if (!usb_dev_get_parent(dev))
 100                 dev->speed = host->host_speed;
 101
 102         return submit_urb(&host->hcd, &host->urb);
 103 }
 104
 105 static int _musb_submit_bulk_msg(struct musb_host_data *host,
 106         struct usb_device *dev, unsigned long pipe, void *buffer, int len)
 107 {
 108         construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_BULK,
 109                       pipe, buffer, len, NULL, 0);
 110         return submit_urb(&host->hcd, &host->urb);
 111 }
 112
 113 static int _musb_submit_int_msg(struct musb_host_data *host,
 114         struct usb_device *dev, unsigned long pipe,
 115         void *buffer, int len, int interval)
 116 {
 117         construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_INT, pipe,
 118                       buffer, len, NULL, interval);
 119         return submit_urb(&host->hcd, &host->urb);
 120 }
 121
 122 static struct int_queue *_musb_create_int_queue(struct musb_host_data *host,
 123         struct usb_device *dev, unsigned long pipe, int queuesize,
 124         int elementsize, void *buffer, int interval)
 125 {
 126         struct int_queue *queue;
 127         int ret, index = usb_pipein(pipe) * 16 + usb_pipeendpoint(pipe);
 128
 129         if (queuesize != 1) {
 130                 printf("ERROR musb int-queues only support queuesize 1\n");
 131                 return NULL;
 132         }
 133
 134         if (dev->int_pending & (1 << index)) {
 135                 printf("ERROR int-urb is already pending on pipe %lx\n", pipe);
 136                 return NULL;
 137         }
 138
 139         queue = malloc(sizeof(*queue));
 140         if (!queue)
 141                 return NULL;
 142
 143         construct_urb(&queue->urb, &queue->hep, dev, USB_ENDPOINT_XFER_INT,
 144                       pipe, buffer, elementsize, NULL, interval);
 145
 146         ret = musb_urb_enqueue(&host->hcd, &queue->urb, 0);
 147         if (ret < 0) {
 148                 printf("Failed to enqueue URB to controller\n");
 149                 free(queue);
 150                 return NULL;
 151         }
 152
 153         dev->int_pending |= 1 << index;
 154         return queue;
 155 }
 156
 157 static int _musb_destroy_int_queue(struct musb_host_data *host,
 158         struct usb_device *dev, struct int_queue *queue)
 159 {
 160         int index = usb_pipein(queue->urb.pipe) * 16 +
 161                     usb_pipeendpoint(queue->urb.pipe);
 162
 163         if (queue->urb.status == -EINPROGRESS)
 164                 musb_urb_dequeue(&host->hcd, &queue->urb, -ETIME);
 165
 166         dev->int_pending &= ~(1 << index);
 167         free(queue);
 168         return 0;
 169 }
 170
 171 static void *_musb_poll_int_queue(struct musb_host_data *host,
 172         struct usb_device *dev, struct int_queue *queue)
 173 {
 174         if (queue->urb.status != -EINPROGRESS)
 175                 return NULL; /* URB has already completed in a prev. poll */
 176
 177         host->host->isr(0, host->host);
 178
 179         if (queue->urb.status != -EINPROGRESS)
 180                 return queue->urb.transfer_buffer; /* Done */
 181
 182         return NULL; /* URB still pending */
 183 }
 184
 185 static int _musb_reset_root_port(struct musb_host_data *host,
 186         struct usb_device *dev)
 187 {
 188         void *mbase = host->host->mregs;
 189         u8 power;
 190
 191         power = musb_readb(mbase, MUSB_POWER);
 192         power &= 0xf0;
 193         musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
 194         mdelay(50);
 195 #ifdef CONFIG_ARCH_SUNXI
 196         /*
 197          * sunxi phy has a bug and it will wrongly detect high speed squelch
 198          * when clearing reset on low-speed devices, temporary disable
 199          * squelch detection to work around this.
 200          */
 201         sunxi_usb_phy_enable_squelch_detect(0, 0);
 202 #endif
 203         power = musb_readb(mbase, MUSB_POWER);
 204         musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
 205 #ifdef CONFIG_ARCH_SUNXI
 206         sunxi_usb_phy_enable_squelch_detect(0, 1);
 207 #endif
 208         host->host->isr(0, host->host);
 209         host->host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
 210                         USB_SPEED_HIGH :
 211                         (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
 212                         USB_SPEED_FULL : USB_SPEED_LOW;
 213         mdelay((host->host_speed == USB_SPEED_LOW) ? 200 : 50);
 214
 215         return 0;
 216 }
 217
 218 int musb_lowlevel_init(struct musb_host_data *host)
 219 {
 220         void *mbase;
 221         /* USB spec says it may take up to 1 second for a device to connect */
 222         unsigned long timeout = get_timer(0) + 1000;
 223         int ret;
 224
 225         if (!host->host) {
 226                 printf("MUSB host is not registered\n");
 227                 return -ENODEV;
 228         }
 229
 230         ret = musb_start(host->host);
 231         if (ret)
 232                 return ret;
 233
 234         mbase = host->host->mregs;
 235         do {
 236                 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
 237                         break;
 238         } while (get_timer(0) < timeout);
 239         if (get_timer(0) >= timeout)
 240                 return -ENODEV;
 241
 242         _musb_reset_root_port(host, NULL);
 243         host->host->is_active = 1;
 244         host->hcd.hcd_priv = host->host;
 245
 246         return 0;
 247 }
 248
 249 #ifndef CONFIG_DM_USB
 250 int usb_lowlevel_stop(int index)
 251 {
 252         if (!musb_host.host) {
 253                 printf("MUSB host is not registered\n");
 254                 return -ENODEV;
 255         }
 256
 257         musb_stop(musb_host.host);
 258         return 0;
 259 }
 260
 261 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
 262                             void *buffer, int length)
 263 {
 264         return _musb_submit_bulk_msg(&musb_host, dev, pipe, buffer, length);
 265 }
 266
 267 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
 268                        void *buffer, int length, struct devrequest *setup)
 269 {
 270         return _musb_submit_control_msg(&musb_host, dev, pipe, buffer, length, setup);
 271 }
 272
 273 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
 274                    void *buffer, int length, int interval)
 275 {
 276         return _musb_submit_int_msg(&musb_host, dev, pipe, buffer, length, interval);
 277 }
 278
 279 struct int_queue *create_int_queue(struct usb_device *dev,
 280                 unsigned long pipe, int queuesize, int elementsize,
 281                 void *buffer, int interval)
 282 {
 283         return _musb_create_int_queue(&musb_host, dev, pipe, queuesize, elementsize,
 284                                       buffer, interval);
 285 }
 286
 287 void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
 288 {
 289         return _musb_poll_int_queue(&musb_host, dev, queue);
 290 }
 291
 292 int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
 293 {
 294         return _musb_destroy_int_queue(&musb_host, dev, queue);
 295 }
 296
 297 int usb_reset_root_port(struct usb_device *dev)
 298 {
 299         return _musb_reset_root_port(&musb_host, dev);
 300 }
 301
 302 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 303 {
 304         return musb_lowlevel_init(&musb_host);
 305 }
 306 #endif /* !CONFIG_DM_USB */
 307
 308 #ifdef CONFIG_DM_USB
 309 static int musb_submit_control_msg(struct udevice *dev, struct usb_device *udev,
 310                                    unsigned long pipe, void *buffer, int length,
 311                                    struct devrequest *setup)
 312 {
 313         struct musb_host_data *host = dev_get_priv(dev);
 314         return _musb_submit_control_msg(host, udev, pipe, buffer, length, setup);
 315 }
 316
 317 static int musb_submit_bulk_msg(struct udevice *dev, struct usb_device *udev,
 318                                 unsigned long pipe, void *buffer, int length)
 319 {
 320         struct musb_host_data *host = dev_get_priv(dev);
 321         return _musb_submit_bulk_msg(host, udev, pipe, buffer, length);
 322 }
 323
 324 static int musb_submit_int_msg(struct udevice *dev, struct usb_device *udev,
 325                                unsigned long pipe, void *buffer, int length,
 326                                int interval)
 327 {
 328         struct musb_host_data *host = dev_get_priv(dev);
 329         return _musb_submit_int_msg(host, udev, pipe, buffer, length, interval);
 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_DM_USB */
 371 #endif /* CONFIG_MUSB_HOST */
 372
 373 #ifdef CONFIG_MUSB_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_MUSB_GADGET */
 424
 425 int 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_MUSB_HOST) && !defined(CONFIG_DM_USB)
 432         case MUSB_HOST:
 433                 musbp = &musb_host.host;
 434                 break;
 435 #endif
 436 #ifdef CONFIG_MUSB_GADGET
 437         case MUSB_PERIPHERAL:
 438                 musbp = &gadget;
 439                 break;
 440 #endif
 441         default:
 442                 return -EINVAL;
 443         }
 444
 445         *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
 446         if (!musbp) {
 447                 printf("Failed to init the controller\n");
 448                 return -EIO;
 449         }
 450
 451         return 0;
 452 }