drivers/usb/musb-new/musb_uboot.c

   1 #include <common.h>
   2 #include <watchdog.h>
   3 #include <asm/errno.h>
   4 #include <linux/usb/ch9.h>
   5 #include <linux/usb/gadget.h>
   6
   7 #include <usb.h>
   8 #include "linux-compat.h"
   9 #include "usb-compat.h"
  10 #include "musb_core.h"
  11 #include "musb_host.h"
  12 #include "musb_gadget.h"
  13
  14 #ifdef CONFIG_MUSB_HOST
  15 struct int_queue {
  16         struct usb_host_endpoint hep;
  17         struct urb urb;
  18 };
  19
  20 static struct musb *host;
  21 static struct usb_hcd hcd;
  22 static enum usb_device_speed host_speed;
  23
  24 static void musb_host_complete_urb(struct urb *urb)
  25 {
  26         urb->dev->status &= ~USB_ST_NOT_PROC;
  27         urb->dev->act_len = urb->actual_length;
  28 }
  29
  30 static struct usb_host_endpoint hep;
  31 static struct urb urb;
  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 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
  91                         void *buffer, int len, struct devrequest *setup)
  92 {
  93         construct_urb(&urb, &hep, dev, USB_ENDPOINT_XFER_CONTROL, pipe,
  94                       buffer, len, setup, 0);
  95
  96         /* Fix speed for non hub-attached devices */
  97         if (!dev->parent)
  98                 dev->speed = host_speed;
  99
 100         return submit_urb(&hcd, &urb);
 101 }
 102
 103
 104 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
 105                                         void *buffer, int len)
 106 {
 107         construct_urb(&urb, &hep, dev, USB_ENDPOINT_XFER_BULK, pipe,
 108                       buffer, len, NULL, 0);
 109         return submit_urb(&hcd, &urb);
 110 }
 111
 112 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
 113                                 void *buffer, int len, int interval)
 114 {
 115         construct_urb(&urb, &hep, dev, USB_ENDPOINT_XFER_INT, pipe,
 116                       buffer, len, NULL, interval);
 117         return submit_urb(&hcd, &urb);
 118 }
 119
 120 struct int_queue *create_int_queue(struct usb_device *dev, unsigned long pipe,
 121         int queuesize, int elementsize, void *buffer, int interval)
 122 {
 123         struct int_queue *queue;
 124         int ret, index = usb_pipein(pipe) * 16 + usb_pipeendpoint(pipe);
 125
 126         if (queuesize != 1) {
 127                 printf("ERROR musb int-queues only support queuesize 1\n");
 128                 return NULL;
 129         }
 130
 131         if (dev->int_pending & (1 << index)) {
 132                 printf("ERROR int-urb is already pending on pipe %lx\n", pipe);
 133                 return NULL;
 134         }
 135
 136         queue = malloc(sizeof(*queue));
 137         if (!queue)
 138                 return NULL;
 139
 140         construct_urb(&queue->urb, &queue->hep, dev, USB_ENDPOINT_XFER_INT,
 141                       pipe, buffer, elementsize, NULL, interval);
 142
 143         ret = musb_urb_enqueue(&hcd, &queue->urb, 0);
 144         if (ret < 0) {
 145                 printf("Failed to enqueue URB to controller\n");
 146                 free(queue);
 147                 return NULL;
 148         }
 149
 150         dev->int_pending |= 1 << index;
 151         return queue;
 152 }
 153
 154 int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
 155 {
 156         int index = usb_pipein(queue->urb.pipe) * 16 +
 157                     usb_pipeendpoint(queue->urb.pipe);
 158
 159         if (queue->urb.status == -EINPROGRESS)
 160                 musb_urb_dequeue(&hcd, &queue->urb, -ETIME);
 161
 162         dev->int_pending &= ~(1 << index);
 163         free(queue);
 164         return 0;
 165 }
 166
 167 void *poll_int_queue(struct usb_device *dev, struct int_queue *queue)
 168 {
 169         if (queue->urb.status != -EINPROGRESS)
 170                 return NULL; /* URB has already completed in a prev. poll */
 171
 172         host->isr(0, host);
 173
 174         if (queue->urb.status != -EINPROGRESS)
 175                 return queue->urb.transfer_buffer; /* Done */
 176
 177         return NULL; /* URB still pending */
 178 }
 179
 180 void usb_reset_root_port(void)
 181 {
 182         void *mbase = host->mregs;
 183         u8 power;
 184
 185         power = musb_readb(mbase, MUSB_POWER);
 186         power &= 0xf0;
 187         musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
 188         mdelay(50);
 189         power = musb_readb(mbase, MUSB_POWER);
 190         musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
 191         host->isr(0, host);
 192         host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
 193                         USB_SPEED_HIGH :
 194                         (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
 195                         USB_SPEED_FULL : USB_SPEED_LOW;
 196         mdelay((host_speed == USB_SPEED_LOW) ? 200 : 50);
 197 }
 198
 199 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 200 {
 201         void *mbase;
 202         /* USB spec says it may take up to 1 second for a device to connect */
 203         unsigned long timeout = get_timer(0) + 1000;
 204
 205         if (!host) {
 206                 printf("MUSB host is not registered\n");
 207                 return -ENODEV;
 208         }
 209
 210         musb_start(host);
 211         mbase = host->mregs;
 212         do {
 213                 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
 214                         break;
 215         } while (get_timer(0) < timeout);
 216         if (get_timer(0) >= timeout)
 217                 return -ENODEV;
 218
 219         usb_reset_root_port();
 220         host->is_active = 1;
 221         hcd.hcd_priv = host;
 222
 223         return 0;
 224 }
 225
 226 int usb_lowlevel_stop(int index)
 227 {
 228         if (!host) {
 229                 printf("MUSB host is not registered\n");
 230                 return -ENODEV;
 231         }
 232
 233         musb_stop(host);
 234         return 0;
 235 }
 236 #endif /* CONFIG_MUSB_HOST */
 237
 238 #ifdef CONFIG_MUSB_GADGET
 239 static struct musb *gadget;
 240
 241 int usb_gadget_handle_interrupts(void)
 242 {
 243         WATCHDOG_RESET();
 244         if (!gadget || !gadget->isr)
 245                 return -EINVAL;
 246
 247         return gadget->isr(0, gadget);
 248 }
 249
 250 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 251 {
 252         int ret;
 253
 254         if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
 255             !driver->setup) {
 256                 printf("bad parameter.\n");
 257                 return -EINVAL;
 258         }
 259
 260         if (!gadget) {
 261                 printf("Controller uninitialized\n");
 262                 return -ENXIO;
 263         }
 264
 265         ret = musb_gadget_start(&gadget->g, driver);
 266         if (ret < 0) {
 267                 printf("gadget_start failed with %d\n", ret);
 268                 return ret;
 269         }
 270
 271         ret = driver->bind(&gadget->g);
 272         if (ret < 0) {
 273                 printf("bind failed with %d\n", ret);
 274                 return ret;
 275         }
 276
 277         return 0;
 278 }
 279
 280 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 281 {
 282         if (driver->disconnect)
 283                 driver->disconnect(&gadget->g);
 284         if (driver->unbind)
 285                 driver->unbind(&gadget->g);
 286         return 0;
 287 }
 288 #endif /* CONFIG_MUSB_GADGET */
 289
 290 int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
 291                         void *ctl_regs)
 292 {
 293         struct musb **musbp;
 294
 295         switch (plat->mode) {
 296 #ifdef CONFIG_MUSB_HOST
 297         case MUSB_HOST:
 298                 musbp = &host;
 299                 break;
 300 #endif
 301 #ifdef CONFIG_MUSB_GADGET
 302         case MUSB_PERIPHERAL:
 303                 musbp = &gadget;
 304                 break;
 305 #endif
 306         default:
 307                 return -EINVAL;
 308         }
 309
 310         *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
 311         if (!musbp) {
 312                 printf("Failed to init the controller\n");
 313                 return -EIO;
 314         }
 315
 316         return 0;
 317 }