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
  17 #ifdef CONFIG_MUSB_HOST
  18 struct int_queue {
  19         struct usb_host_endpoint hep;
  20         struct urb urb;
  21 };
  22
  23 static struct musb *host;
  24 static struct usb_hcd hcd;
  25 static enum usb_device_speed host_speed;
  26
  27 static void musb_host_complete_urb(struct urb *urb)
  28 {
  29         urb->dev->status &= ~USB_ST_NOT_PROC;
  30         urb->dev->act_len = urb->actual_length;
  31 }
  32
  33 static struct usb_host_endpoint hep;
  34 static struct urb urb;
  35
  36 static void construct_urb(struct urb *urb, struct usb_host_endpoint *hep,
  37                           struct usb_device *dev, int endpoint_type,
  38                           unsigned long pipe, void *buffer, int len,
  39                           struct devrequest *setup, int interval)
  40 {
  41         int epnum = usb_pipeendpoint(pipe);
  42         int is_in = usb_pipein(pipe);
  43
  44         memset(urb, 0, sizeof(struct urb));
  45         memset(hep, 0, sizeof(struct usb_host_endpoint));
  46         INIT_LIST_HEAD(&hep->urb_list);
  47         INIT_LIST_HEAD(&urb->urb_list);
  48         urb->ep = hep;
  49         urb->complete = musb_host_complete_urb;
  50         urb->status = -EINPROGRESS;
  51         urb->dev = dev;
  52         urb->pipe = pipe;
  53         urb->transfer_buffer = buffer;
  54         urb->transfer_dma = (unsigned long)buffer;
  55         urb->transfer_buffer_length = len;
  56         urb->setup_packet = (unsigned char *)setup;
  57
  58         urb->ep->desc.wMaxPacketSize =
  59                 __cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
  60                                 dev->epmaxpacketout[epnum]);
  61         urb->ep->desc.bmAttributes = endpoint_type;
  62         urb->ep->desc.bEndpointAddress =
  63                 (is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
  64         urb->ep->desc.bInterval = interval;
  65 }
  66
  67 static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
  68 {
  69         struct musb *host = hcd->hcd_priv;
  70         int ret;
  71         unsigned long timeout;
  72
  73         ret = musb_urb_enqueue(hcd, urb, 0);
  74         if (ret < 0) {
  75                 printf("Failed to enqueue URB to controller\n");
  76                 return ret;
  77         }
  78
  79         timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
  80         do {
  81                 if (ctrlc())
  82                         return -EIO;
  83                 host->isr(0, host);
  84         } while (urb->status == -EINPROGRESS &&
  85                  get_timer(0) < timeout);
  86
  87         if (urb->status == -EINPROGRESS)
  88                 musb_urb_dequeue(hcd, urb, -ETIME);
  89
  90         return urb->status;
  91 }
  92
  93 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
  94                         void *buffer, int len, struct devrequest *setup)
  95 {
  96         construct_urb(&urb, &hep, dev, USB_ENDPOINT_XFER_CONTROL, pipe,
  97                       buffer, len, setup, 0);
  98
  99         /* Fix speed for non hub-attached devices */
 100         if (!dev->parent)
 101                 dev->speed = host_speed;
 102
 103         return submit_urb(&hcd, &urb);
 104 }
 105
 106
 107 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
 108                                         void *buffer, int len)
 109 {
 110         construct_urb(&urb, &hep, dev, USB_ENDPOINT_XFER_BULK, pipe,
 111                       buffer, len, NULL, 0);
 112         return submit_urb(&hcd, &urb);
 113 }
 114
 115 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
 116                                 void *buffer, int len, int interval)
 117 {
 118         construct_urb(&urb, &hep, dev, USB_ENDPOINT_XFER_INT, pipe,
 119                       buffer, len, NULL, interval);
 120         return submit_urb(&hcd, &urb);
 121 }
 122
 123 struct int_queue *create_int_queue(struct usb_device *dev, unsigned long pipe,
 124         int queuesize, 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(&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 int destroy_int_queue(struct usb_device *dev, struct int_queue *queue)
 158 {
 159         int index = usb_pipein(queue->urb.pipe) * 16 +
 160                     usb_pipeendpoint(queue->urb.pipe);
 161
 162         if (queue->urb.status == -EINPROGRESS)
 163                 musb_urb_dequeue(&hcd, &queue->urb, -ETIME);
 164
 165         dev->int_pending &= ~(1 << index);
 166         free(queue);
 167         return 0;
 168 }
 169
 170 void *poll_int_queue(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->isr(0, 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 int usb_reset_root_port(struct usb_device *dev)
 184 {
 185         void *mbase = host->mregs;
 186         u8 power;
 187
 188         power = musb_readb(mbase, MUSB_POWER);
 189         power &= 0xf0;
 190         musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
 191         mdelay(50);
 192 #ifdef CONFIG_ARCH_SUNXI
 193         /*
 194          * sunxi phy has a bug and it will wrongly detect high speed squelch
 195          * when clearing reset on low-speed devices, temporary disable
 196          * squelch detection to work around this.
 197          */
 198         sunxi_usb_phy_enable_squelch_detect(0, 0);
 199 #endif
 200         power = musb_readb(mbase, MUSB_POWER);
 201         musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
 202 #ifdef CONFIG_ARCH_SUNXI
 203         sunxi_usb_phy_enable_squelch_detect(0, 1);
 204 #endif
 205         host->isr(0, host);
 206         host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
 207                         USB_SPEED_HIGH :
 208                         (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
 209                         USB_SPEED_FULL : USB_SPEED_LOW;
 210         mdelay((host_speed == USB_SPEED_LOW) ? 200 : 50);
 211
 212         return 0;
 213 }
 214
 215 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 216 {
 217         void *mbase;
 218         /* USB spec says it may take up to 1 second for a device to connect */
 219         unsigned long timeout = get_timer(0) + 1000;
 220
 221         if (!host) {
 222                 printf("MUSB host is not registered\n");
 223                 return -ENODEV;
 224         }
 225
 226         musb_start(host);
 227         mbase = host->mregs;
 228         do {
 229                 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
 230                         break;
 231         } while (get_timer(0) < timeout);
 232         if (get_timer(0) >= timeout)
 233                 return -ENODEV;
 234
 235         usb_reset_root_port(NULL);
 236         host->is_active = 1;
 237         hcd.hcd_priv = host;
 238
 239         return 0;
 240 }
 241
 242 int usb_lowlevel_stop(int index)
 243 {
 244         if (!host) {
 245                 printf("MUSB host is not registered\n");
 246                 return -ENODEV;
 247         }
 248
 249         musb_stop(host);
 250         return 0;
 251 }
 252 #endif /* CONFIG_MUSB_HOST */
 253
 254 #ifdef CONFIG_MUSB_GADGET
 255 static struct musb *gadget;
 256
 257 int usb_gadget_handle_interrupts(int index)
 258 {
 259         WATCHDOG_RESET();
 260         if (!gadget || !gadget->isr)
 261                 return -EINVAL;
 262
 263         return gadget->isr(0, gadget);
 264 }
 265
 266 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 267 {
 268         int ret;
 269
 270         if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
 271             !driver->setup) {
 272                 printf("bad parameter.\n");
 273                 return -EINVAL;
 274         }
 275
 276         if (!gadget) {
 277                 printf("Controller uninitialized\n");
 278                 return -ENXIO;
 279         }
 280
 281         ret = musb_gadget_start(&gadget->g, driver);
 282         if (ret < 0) {
 283                 printf("gadget_start failed with %d\n", ret);
 284                 return ret;
 285         }
 286
 287         ret = driver->bind(&gadget->g);
 288         if (ret < 0) {
 289                 printf("bind failed with %d\n", ret);
 290                 return ret;
 291         }
 292
 293         return 0;
 294 }
 295
 296 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 297 {
 298         if (driver->disconnect)
 299                 driver->disconnect(&gadget->g);
 300         if (driver->unbind)
 301                 driver->unbind(&gadget->g);
 302         return 0;
 303 }
 304 #endif /* CONFIG_MUSB_GADGET */
 305
 306 int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
 307                         void *ctl_regs)
 308 {
 309         struct musb **musbp;
 310
 311         switch (plat->mode) {
 312 #ifdef CONFIG_MUSB_HOST
 313         case MUSB_HOST:
 314                 musbp = &host;
 315                 break;
 316 #endif
 317 #ifdef CONFIG_MUSB_GADGET
 318         case MUSB_PERIPHERAL:
 319                 musbp = &gadget;
 320                 break;
 321 #endif
 322         default:
 323                 return -EINVAL;
 324         }
 325
 326         *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
 327         if (!musbp) {
 328                 printf("Failed to init the controller\n");
 329                 return -EIO;
 330         }
 331
 332         return 0;
 333 }