drivers/usb/musb-new/musb_uboot.c

   1 #include <common.h>
   2 #include <console.h>
   3 #include <malloc.h>
   4 #include <watchdog.h>
   5 #include <linux/delay.h>
   6 #include <linux/err.h>
   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 #if !CONFIG_IS_ENABLED(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, bool nonblock)
 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
 197         if (host->host->ops->pre_root_reset_end)
 198                 host->host->ops->pre_root_reset_end(host->host);
 199
 200         power = musb_readb(mbase, MUSB_POWER);
 201         musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
 202
 203         if (host->host->ops->post_root_reset_end)
 204                 host->host->ops->post_root_reset_end(host->host);
 205
 206         host->host->isr(0, host->host);
 207         host->host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
 208                         USB_SPEED_HIGH :
 209                         (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
 210                         USB_SPEED_FULL : USB_SPEED_LOW;
 211         mdelay((host->host_speed == USB_SPEED_LOW) ? 200 : 50);
 212
 213         return 0;
 214 }
 215
 216 int musb_lowlevel_init(struct musb_host_data *host)
 217 {
 218         void *mbase;
 219         /* USB spec says it may take up to 1 second for a device to connect */
 220         unsigned long timeout = get_timer(0) + 1000;
 221         int ret;
 222
 223         if (!host->host) {
 224                 printf("MUSB host is not registered\n");
 225                 return -ENODEV;
 226         }
 227
 228         ret = musb_start(host->host);
 229         if (ret)
 230                 return ret;
 231
 232         mbase = host->host->mregs;
 233         do {
 234                 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
 235                         break;
 236         } while (get_timer(0) < timeout);
 237         if (get_timer(0) >= timeout) {
 238                 musb_stop(host->host);
 239                 return -ENODEV;
 240         }
 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 #if !CONFIG_IS_ENABLED(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, bool nonblock)
 275 {
 276         return _musb_submit_int_msg(&musb_host, dev, pipe, buffer, length,
 277                                     interval, nonblock);
 278 }
 279
 280 struct int_queue *create_int_queue(struct usb_device *dev,
 281                 unsigned long pipe, int queuesize, int elementsize,
 282                 void *buffer, int interval)
 283 {
 284         return _musb_create_int_queue(&musb_host, dev, pipe, queuesize, elementsize,
 285                                       buffer, interval);
 286 }
 287
 288 void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
 289 {
 290         return _musb_poll_int_queue(&musb_host, dev, queue);
 291 }
 292
 293 int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
 294 {
 295         return _musb_destroy_int_queue(&musb_host, dev, queue);
 296 }
 297
 298 int usb_reset_root_port(struct usb_device *dev)
 299 {
 300         return _musb_reset_root_port(&musb_host, dev);
 301 }
 302
 303 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 304 {
 305         return musb_lowlevel_init(&musb_host);
 306 }
 307 #endif /* !CONFIG_IS_ENABLED(DM_USB) */
 308
 309 #if CONFIG_IS_ENABLED(DM_USB)
 310 static int musb_submit_control_msg(struct udevice *dev, struct usb_device *udev,
 311                                    unsigned long pipe, void *buffer, int length,
 312                                    struct devrequest *setup)
 313 {
 314         struct musb_host_data *host = dev_get_priv(dev);
 315         return _musb_submit_control_msg(host, udev, pipe, buffer, length, setup);
 316 }
 317
 318 static int musb_submit_bulk_msg(struct udevice *dev, struct usb_device *udev,
 319                                 unsigned long pipe, void *buffer, int length)
 320 {
 321         struct musb_host_data *host = dev_get_priv(dev);
 322         return _musb_submit_bulk_msg(host, udev, pipe, buffer, length);
 323 }
 324
 325 static int musb_submit_int_msg(struct udevice *dev, struct usb_device *udev,
 326                                unsigned long pipe, void *buffer, int length,
 327                                int interval, bool nonblock)
 328 {
 329         struct musb_host_data *host = dev_get_priv(dev);
 330         return _musb_submit_int_msg(host, udev, pipe, buffer, length, interval,
 331                                     nonblock);
 332 }
 333
 334 static struct int_queue *musb_create_int_queue(struct udevice *dev,
 335                 struct usb_device *udev, unsigned long pipe, int queuesize,
 336                 int elementsize, void *buffer, int interval)
 337 {
 338         struct musb_host_data *host = dev_get_priv(dev);
 339         return _musb_create_int_queue(host, udev, pipe, queuesize, elementsize,
 340                                       buffer, interval);
 341 }
 342
 343 static void *musb_poll_int_queue(struct udevice *dev, struct usb_device *udev,
 344                                  struct int_queue *queue)
 345 {
 346         struct musb_host_data *host = dev_get_priv(dev);
 347         return _musb_poll_int_queue(host, udev, queue);
 348 }
 349
 350 static int musb_destroy_int_queue(struct udevice *dev, struct usb_device *udev,
 351                                   struct int_queue *queue)
 352 {
 353         struct musb_host_data *host = dev_get_priv(dev);
 354         return _musb_destroy_int_queue(host, udev, queue);
 355 }
 356
 357 static int musb_reset_root_port(struct udevice *dev, struct usb_device *udev)
 358 {
 359         struct musb_host_data *host = dev_get_priv(dev);
 360         return _musb_reset_root_port(host, udev);
 361 }
 362
 363 struct dm_usb_ops musb_usb_ops = {
 364         .control = musb_submit_control_msg,
 365         .bulk = musb_submit_bulk_msg,
 366         .interrupt = musb_submit_int_msg,
 367         .create_int_queue = musb_create_int_queue,
 368         .poll_int_queue = musb_poll_int_queue,
 369         .destroy_int_queue = musb_destroy_int_queue,
 370         .reset_root_port = musb_reset_root_port,
 371 };
 372 #endif /* CONFIG_IS_ENABLED(DM_USB) */
 373 #endif /* CONFIG_USB_MUSB_HOST */
 374
 375 #if defined(CONFIG_USB_MUSB_GADGET) && !CONFIG_IS_ENABLED(DM_USB_GADGET)
 376 static struct musb *gadget;
 377
 378 int usb_gadget_handle_interrupts(int index)
 379 {
 380         WATCHDOG_RESET();
 381         if (!gadget || !gadget->isr)
 382                 return -EINVAL;
 383
 384         return gadget->isr(0, gadget);
 385 }
 386
 387 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 388 {
 389         int ret;
 390
 391         if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
 392             !driver->setup) {
 393                 printf("bad parameter.\n");
 394                 return -EINVAL;
 395         }
 396
 397         if (!gadget) {
 398                 printf("Controller uninitialized\n");
 399                 return -ENXIO;
 400         }
 401
 402         ret = musb_gadget_start(&gadget->g, driver);
 403         if (ret < 0) {
 404                 printf("gadget_start failed with %d\n", ret);
 405                 return ret;
 406         }
 407
 408         ret = driver->bind(&gadget->g);
 409         if (ret < 0) {
 410                 printf("bind failed with %d\n", ret);
 411                 return ret;
 412         }
 413
 414         return 0;
 415 }
 416
 417 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 418 {
 419         if (driver->disconnect)
 420                 driver->disconnect(&gadget->g);
 421         if (driver->unbind)
 422                 driver->unbind(&gadget->g);
 423         return 0;
 424 }
 425 #endif /* CONFIG_USB_MUSB_GADGET */
 426
 427 struct musb *musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
 428                            void *ctl_regs)
 429 {
 430         struct musb **musbp;
 431
 432         switch (plat->mode) {
 433 #if defined(CONFIG_USB_MUSB_HOST) && !CONFIG_IS_ENABLED(DM_USB)
 434         case MUSB_HOST:
 435                 musbp = &musb_host.host;
 436                 break;
 437 #endif
 438 #if defined(CONFIG_USB_MUSB_GADGET) && !CONFIG_IS_ENABLED(DM_USB_GADGET)
 439         case MUSB_PERIPHERAL:
 440                 musbp = &gadget;
 441                 break;
 442 #endif
 443         default:
 444                 return ERR_PTR(-EINVAL);
 445         }
 446
 447         *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
 448         if (IS_ERR(*musbp)) {
 449                 printf("Failed to init the controller\n");
 450                 return ERR_CAST(*musbp);
 451         }
 452
 453         return *musbp;
 454 }