drivers/usb/musb-new/musb_uboot.c

   1 #include <common.h>
   2 #include <console.h>
   3 #include <watchdog.h>
   4 #ifdef CONFIG_ARCH_SUNXI
   5 #include <asm/arch/usb_phy.h>
   6 #endif
   7 #include <linux/errno.h>
   8 #include <linux/usb/ch9.h>
   9 #include <linux/usb/gadget.h>
  10
  11 #include <usb.h>
  12 #include "linux-compat.h"
  13 #include "usb-compat.h"
  14 #include "musb_core.h"
  15 #include "musb_host.h"
  16 #include "musb_gadget.h"
  17 #include "musb_uboot.h"
  18
  19 #ifdef CONFIG_USB_MUSB_HOST
  20 struct int_queue {
  21         struct usb_host_endpoint hep;
  22         struct urb urb;
  23 };
  24
  25 #ifndef CONFIG_DM_USB
  26 struct musb_host_data musb_host;
  27 #endif
  28
  29 static void musb_host_complete_urb(struct urb *urb)
  30 {
  31         urb->dev->status &= ~USB_ST_NOT_PROC;
  32         urb->dev->act_len = urb->actual_length;
  33 }
  34
  35 static void construct_urb(struct urb *urb, struct usb_host_endpoint *hep,
  36                           struct usb_device *dev, int endpoint_type,
  37                           unsigned long pipe, void *buffer, int len,
  38                           struct devrequest *setup, int interval)
  39 {
  40         int epnum = usb_pipeendpoint(pipe);
  41         int is_in = usb_pipein(pipe);
  42
  43         memset(urb, 0, sizeof(struct urb));
  44         memset(hep, 0, sizeof(struct usb_host_endpoint));
  45         INIT_LIST_HEAD(&hep->urb_list);
  46         INIT_LIST_HEAD(&urb->urb_list);
  47         urb->ep = hep;
  48         urb->complete = musb_host_complete_urb;
  49         urb->status = -EINPROGRESS;
  50         urb->dev = dev;
  51         urb->pipe = pipe;
  52         urb->transfer_buffer = buffer;
  53         urb->transfer_dma = (unsigned long)buffer;
  54         urb->transfer_buffer_length = len;
  55         urb->setup_packet = (unsigned char *)setup;
  56
  57         urb->ep->desc.wMaxPacketSize =
  58                 __cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
  59                                 dev->epmaxpacketout[epnum]);
  60         urb->ep->desc.bmAttributes = endpoint_type;
  61         urb->ep->desc.bEndpointAddress =
  62                 (is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
  63         urb->ep->desc.bInterval = interval;
  64 }
  65
  66 static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
  67 {
  68         struct musb *host = hcd->hcd_priv;
  69         int ret;
  70         unsigned long timeout;
  71
  72         ret = musb_urb_enqueue(hcd, urb, 0);
  73         if (ret < 0) {
  74                 printf("Failed to enqueue URB to controller\n");
  75                 return ret;
  76         }
  77
  78         timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
  79         do {
  80                 if (ctrlc())
  81                         return -EIO;
  82                 host->isr(0, host);
  83         } while (urb->status == -EINPROGRESS &&
  84                  get_timer(0) < timeout);
  85
  86         if (urb->status == -EINPROGRESS)
  87                 musb_urb_dequeue(hcd, urb, -ETIME);
  88
  89         return urb->status;
  90 }
  91
  92 static int _musb_submit_control_msg(struct musb_host_data *host,
  93         struct usb_device *dev, unsigned long pipe,
  94         void *buffer, int len, struct devrequest *setup)
  95 {
  96         construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_CONTROL,
  97                       pipe, buffer, len, setup, 0);
  98
  99         /* Fix speed for non hub-attached devices */
 100         if (!usb_dev_get_parent(dev))
 101                 dev->speed = host->host_speed;
 102
 103         return submit_urb(&host->hcd, &host->urb);
 104 }
 105
 106 static int _musb_submit_bulk_msg(struct musb_host_data *host,
 107         struct usb_device *dev, unsigned long pipe, void *buffer, int len)
 108 {
 109         construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_BULK,
 110                       pipe, buffer, len, NULL, 0);
 111         return submit_urb(&host->hcd, &host->urb);
 112 }
 113
 114 static int _musb_submit_int_msg(struct musb_host_data *host,
 115         struct usb_device *dev, unsigned long pipe,
 116         void *buffer, int len, int interval)
 117 {
 118         construct_urb(&host->urb, &host->hep, dev, USB_ENDPOINT_XFER_INT, pipe,
 119                       buffer, len, NULL, interval);
 120         return submit_urb(&host->hcd, &host->urb);
 121 }
 122
 123 static struct int_queue *_musb_create_int_queue(struct musb_host_data *host,
 124         struct usb_device *dev, unsigned long pipe, int queuesize,
 125         int elementsize, void *buffer, int interval)
 126 {
 127         struct int_queue *queue;
 128         int ret, index = usb_pipein(pipe) * 16 + usb_pipeendpoint(pipe);
 129
 130         if (queuesize != 1) {
 131                 printf("ERROR musb int-queues only support queuesize 1\n");
 132                 return NULL;
 133         }
 134
 135         if (dev->int_pending & (1 << index)) {
 136                 printf("ERROR int-urb is already pending on pipe %lx\n", pipe);
 137                 return NULL;
 138         }
 139
 140         queue = malloc(sizeof(*queue));
 141         if (!queue)
 142                 return NULL;
 143
 144         construct_urb(&queue->urb, &queue->hep, dev, USB_ENDPOINT_XFER_INT,
 145                       pipe, buffer, elementsize, NULL, interval);
 146
 147         ret = musb_urb_enqueue(&host->hcd, &queue->urb, 0);
 148         if (ret < 0) {
 149                 printf("Failed to enqueue URB to controller\n");
 150                 free(queue);
 151                 return NULL;
 152         }
 153
 154         dev->int_pending |= 1 << index;
 155         return queue;
 156 }
 157
 158 static int _musb_destroy_int_queue(struct musb_host_data *host,
 159         struct usb_device *dev, struct int_queue *queue)
 160 {
 161         int index = usb_pipein(queue->urb.pipe) * 16 +
 162                     usb_pipeendpoint(queue->urb.pipe);
 163
 164         if (queue->urb.status == -EINPROGRESS)
 165                 musb_urb_dequeue(&host->hcd, &queue->urb, -ETIME);
 166
 167         dev->int_pending &= ~(1 << index);
 168         free(queue);
 169         return 0;
 170 }
 171
 172 static void *_musb_poll_int_queue(struct musb_host_data *host,
 173         struct usb_device *dev, struct int_queue *queue)
 174 {
 175         if (queue->urb.status != -EINPROGRESS)
 176                 return NULL; /* URB has already completed in a prev. poll */
 177
 178         host->host->isr(0, host->host);
 179
 180         if (queue->urb.status != -EINPROGRESS)
 181                 return queue->urb.transfer_buffer; /* Done */
 182
 183         return NULL; /* URB still pending */
 184 }
 185
 186 static int _musb_reset_root_port(struct musb_host_data *host,
 187         struct usb_device *dev)
 188 {
 189         void *mbase = host->host->mregs;
 190         u8 power;
 191
 192         power = musb_readb(mbase, MUSB_POWER);
 193         power &= 0xf0;
 194         musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
 195         mdelay(50);
 196 #ifdef CONFIG_ARCH_SUNXI
 197         /*
 198          * sunxi phy has a bug and it will wrongly detect high speed squelch
 199          * when clearing reset on low-speed devices, temporary disable
 200          * squelch detection to work around this.
 201          */
 202         sunxi_usb_phy_enable_squelch_detect(0, 0);
 203 #endif
 204         power = musb_readb(mbase, MUSB_POWER);
 205         musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
 206 #ifdef CONFIG_ARCH_SUNXI
 207         sunxi_usb_phy_enable_squelch_detect(0, 1);
 208 #endif
 209         host->host->isr(0, host->host);
 210         host->host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
 211                         USB_SPEED_HIGH :
 212                         (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
 213                         USB_SPEED_FULL : USB_SPEED_LOW;
 214         mdelay((host->host_speed == USB_SPEED_LOW) ? 200 : 50);
 215
 216         return 0;
 217 }
 218
 219 int musb_lowlevel_init(struct musb_host_data *host)
 220 {
 221         void *mbase;
 222         /* USB spec says it may take up to 1 second for a device to connect */
 223         unsigned long timeout = get_timer(0) + 1000;
 224         int ret;
 225
 226         if (!host->host) {
 227                 printf("MUSB host is not registered\n");
 228                 return -ENODEV;
 229         }
 230
 231         ret = musb_start(host->host);
 232         if (ret)
 233                 return ret;
 234
 235         mbase = host->host->mregs;
 236         do {
 237                 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
 238                         break;
 239         } while (get_timer(0) < timeout);
 240         if (get_timer(0) >= timeout) {
 241                 musb_stop(host->host);
 242                 return -ENODEV;
 243         }
 244
 245         _musb_reset_root_port(host, NULL);
 246         host->host->is_active = 1;
 247         host->hcd.hcd_priv = host->host;
 248
 249         return 0;
 250 }
 251
 252 #ifndef CONFIG_DM_USB
 253 int usb_lowlevel_stop(int index)
 254 {
 255         if (!musb_host.host) {
 256                 printf("MUSB host is not registered\n");
 257                 return -ENODEV;
 258         }
 259
 260         musb_stop(musb_host.host);
 261         return 0;
 262 }
 263
 264 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
 265                             void *buffer, int length)
 266 {
 267         return _musb_submit_bulk_msg(&musb_host, dev, pipe, buffer, length);
 268 }
 269
 270 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
 271                        void *buffer, int length, struct devrequest *setup)
 272 {
 273         return _musb_submit_control_msg(&musb_host, dev, pipe, buffer, length, setup);
 274 }
 275
 276 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
 277                    void *buffer, int length, int interval)
 278 {
 279         return _musb_submit_int_msg(&musb_host, dev, pipe, buffer, length, interval);
 280 }
 281
 282 struct int_queue *create_int_queue(struct usb_device *dev,
 283                 unsigned long pipe, int queuesize, int elementsize,
 284                 void *buffer, int interval)
 285 {
 286         return _musb_create_int_queue(&musb_host, dev, pipe, queuesize, elementsize,
 287                                       buffer, interval);
 288 }
 289
 290 void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
 291 {
 292         return _musb_poll_int_queue(&musb_host, dev, queue);
 293 }
 294
 295 int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
 296 {
 297         return _musb_destroy_int_queue(&musb_host, dev, queue);
 298 }
 299
 300 int usb_reset_root_port(struct usb_device *dev)
 301 {
 302         return _musb_reset_root_port(&musb_host, dev);
 303 }
 304
 305 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 306 {
 307         return musb_lowlevel_init(&musb_host);
 308 }
 309 #endif /* !CONFIG_DM_USB */
 310
 311 #ifdef CONFIG_DM_USB
 312 static int musb_submit_control_msg(struct udevice *dev, struct usb_device *udev,
 313                                    unsigned long pipe, void *buffer, int length,
 314                                    struct devrequest *setup)
 315 {
 316         struct musb_host_data *host = dev_get_priv(dev);
 317         return _musb_submit_control_msg(host, udev, pipe, buffer, length, setup);
 318 }
 319
 320 static int musb_submit_bulk_msg(struct udevice *dev, struct usb_device *udev,
 321                                 unsigned long pipe, void *buffer, int length)
 322 {
 323         struct musb_host_data *host = dev_get_priv(dev);
 324         return _musb_submit_bulk_msg(host, udev, pipe, buffer, length);
 325 }
 326
 327 static int musb_submit_int_msg(struct udevice *dev, struct usb_device *udev,
 328                                unsigned long pipe, void *buffer, int length,
 329                                int interval)
 330 {
 331         struct musb_host_data *host = dev_get_priv(dev);
 332         return _musb_submit_int_msg(host, udev, pipe, buffer, length, interval);
 333 }
 334
 335 static struct int_queue *musb_create_int_queue(struct udevice *dev,
 336                 struct usb_device *udev, unsigned long pipe, int queuesize,
 337                 int elementsize, void *buffer, int interval)
 338 {
 339         struct musb_host_data *host = dev_get_priv(dev);
 340         return _musb_create_int_queue(host, udev, pipe, queuesize, elementsize,
 341                                       buffer, interval);
 342 }
 343
 344 static void *musb_poll_int_queue(struct udevice *dev, struct usb_device *udev,
 345                                  struct int_queue *queue)
 346 {
 347         struct musb_host_data *host = dev_get_priv(dev);
 348         return _musb_poll_int_queue(host, udev, queue);
 349 }
 350
 351 static int musb_destroy_int_queue(struct udevice *dev, struct usb_device *udev,
 352                                   struct int_queue *queue)
 353 {
 354         struct musb_host_data *host = dev_get_priv(dev);
 355         return _musb_destroy_int_queue(host, udev, queue);
 356 }
 357
 358 static int musb_reset_root_port(struct udevice *dev, struct usb_device *udev)
 359 {
 360         struct musb_host_data *host = dev_get_priv(dev);
 361         return _musb_reset_root_port(host, udev);
 362 }
 363
 364 struct dm_usb_ops musb_usb_ops = {
 365         .control = musb_submit_control_msg,
 366         .bulk = musb_submit_bulk_msg,
 367         .interrupt = musb_submit_int_msg,
 368         .create_int_queue = musb_create_int_queue,
 369         .poll_int_queue = musb_poll_int_queue,
 370         .destroy_int_queue = musb_destroy_int_queue,
 371         .reset_root_port = musb_reset_root_port,
 372 };
 373 #endif /* CONFIG_DM_USB */
 374 #endif /* CONFIG_USB_MUSB_HOST */
 375
 376 #ifdef CONFIG_USB_MUSB_GADGET
 377 static struct musb *gadget;
 378
 379 int usb_gadget_handle_interrupts(int index)
 380 {
 381         WATCHDOG_RESET();
 382         if (!gadget || !gadget->isr)
 383                 return -EINVAL;
 384
 385         return gadget->isr(0, gadget);
 386 }
 387
 388 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 389 {
 390         int ret;
 391
 392         if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
 393             !driver->setup) {
 394                 printf("bad parameter.\n");
 395                 return -EINVAL;
 396         }
 397
 398         if (!gadget) {
 399                 printf("Controller uninitialized\n");
 400                 return -ENXIO;
 401         }
 402
 403         ret = musb_gadget_start(&gadget->g, driver);
 404         if (ret < 0) {
 405                 printf("gadget_start failed with %d\n", ret);
 406                 return ret;
 407         }
 408
 409         ret = driver->bind(&gadget->g);
 410         if (ret < 0) {
 411                 printf("bind failed with %d\n", ret);
 412                 return ret;
 413         }
 414
 415         return 0;
 416 }
 417
 418 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 419 {
 420         if (driver->disconnect)
 421                 driver->disconnect(&gadget->g);
 422         if (driver->unbind)
 423                 driver->unbind(&gadget->g);
 424         return 0;
 425 }
 426 #endif /* CONFIG_USB_MUSB_GADGET */
 427
 428 int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
 429                         void *ctl_regs)
 430 {
 431         struct musb **musbp;
 432
 433         switch (plat->mode) {
 434 #if defined(CONFIG_USB_MUSB_HOST) && !defined(CONFIG_DM_USB)
 435         case MUSB_HOST:
 436                 musbp = &musb_host.host;
 437                 break;
 438 #endif
 439 #ifdef CONFIG_USB_MUSB_GADGET
 440         case MUSB_PERIPHERAL:
 441                 musbp = &gadget;
 442                 break;
 443 #endif
 444         default:
 445                 return -EINVAL;
 446         }
 447
 448         *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
 449         if (!musbp) {
 450                 printf("Failed to init the controller\n");
 451                 return -EIO;
 452         }
 453
 454         return 0;
 455 }