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 static struct musb *host;
  16 static struct usb_hcd hcd;
  17 static enum usb_device_speed host_speed;
  18
  19 static void musb_host_complete_urb(struct urb *urb)
  20 {
  21         urb->dev->status &= ~USB_ST_NOT_PROC;
  22         urb->dev->act_len = urb->actual_length;
  23 }
  24
  25 static struct usb_host_endpoint hep;
  26 static struct urb urb;
  27
  28 static struct urb *construct_urb(struct usb_device *dev, int endpoint_type,
  29                                 unsigned long pipe, void *buffer, int len,
  30                                 struct devrequest *setup, int interval)
  31 {
  32         int epnum = usb_pipeendpoint(pipe);
  33         int is_in = usb_pipein(pipe);
  34
  35         memset(&urb, 0, sizeof(struct urb));
  36         memset(&hep, 0, sizeof(struct usb_host_endpoint));
  37         INIT_LIST_HEAD(&hep.urb_list);
  38         INIT_LIST_HEAD(&urb.urb_list);
  39         urb.ep = &hep;
  40         urb.complete = musb_host_complete_urb;
  41         urb.status = -EINPROGRESS;
  42         urb.dev = dev;
  43         urb.pipe = pipe;
  44         urb.transfer_buffer = buffer;
  45         urb.transfer_dma = (unsigned long)buffer;
  46         urb.transfer_buffer_length = len;
  47         urb.setup_packet = (unsigned char *)setup;
  48
  49         urb.ep->desc.wMaxPacketSize =
  50                 __cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
  51                                 dev->epmaxpacketout[epnum]);
  52         urb.ep->desc.bmAttributes = endpoint_type;
  53         urb.ep->desc.bEndpointAddress =
  54                 (is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
  55         urb.ep->desc.bInterval = interval;
  56
  57         return &urb;
  58 }
  59
  60 static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
  61 {
  62         struct musb *host = hcd->hcd_priv;
  63         int ret;
  64         unsigned long timeout;
  65
  66         ret = musb_urb_enqueue(hcd, urb, 0);
  67         if (ret < 0) {
  68                 printf("Failed to enqueue URB to controller\n");
  69                 return ret;
  70         }
  71
  72         timeout = get_timer(0) + USB_TIMEOUT_MS(urb->pipe);
  73         do {
  74                 if (ctrlc())
  75                         return -EIO;
  76                 host->isr(0, host);
  77         } while (urb->status == -EINPROGRESS &&
  78                  get_timer(0) < timeout);
  79
  80         if (urb->status == -EINPROGRESS)
  81                 musb_urb_dequeue(hcd, urb, -ETIME);
  82
  83         return urb->status;
  84 }
  85
  86 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
  87                         void *buffer, int len, struct devrequest *setup)
  88 {
  89         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_CONTROL, pipe,
  90                                         buffer, len, setup, 0);
  91
  92         /* Fix speed for non hub-attached devices */
  93         if (!dev->parent)
  94                 dev->speed = host_speed;
  95
  96         return submit_urb(&hcd, urb);
  97 }
  98
  99
 100 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
 101                                         void *buffer, int len)
 102 {
 103         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_BULK, pipe,
 104                                         buffer, len, NULL, 0);
 105         return submit_urb(&hcd, urb);
 106 }
 107
 108 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
 109                                 void *buffer, int len, int interval)
 110 {
 111         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_INT, pipe,
 112                                         buffer, len, NULL, interval);
 113         return submit_urb(&hcd, urb);
 114 }
 115
 116 void usb_reset_root_port(void)
 117 {
 118         void *mbase = host->mregs;
 119         u8 power;
 120
 121         power = musb_readb(mbase, MUSB_POWER);
 122         power &= 0xf0;
 123         musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
 124         mdelay(50);
 125         power = musb_readb(mbase, MUSB_POWER);
 126         musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
 127         host->isr(0, host);
 128         host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
 129                         USB_SPEED_HIGH :
 130                         (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
 131                         USB_SPEED_FULL : USB_SPEED_LOW;
 132         mdelay((host_speed == USB_SPEED_LOW) ? 200 : 50);
 133 }
 134
 135 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 136 {
 137         void *mbase;
 138         /* USB spec says it may take up to 1 second for a device to connect */
 139         unsigned long timeout = get_timer(0) + 1000;
 140
 141         if (!host) {
 142                 printf("MUSB host is not registered\n");
 143                 return -ENODEV;
 144         }
 145
 146         musb_start(host);
 147         mbase = host->mregs;
 148         do {
 149                 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
 150                         break;
 151         } while (get_timer(0) < timeout);
 152         if (get_timer(0) >= timeout)
 153                 return -ENODEV;
 154
 155         usb_reset_root_port();
 156         host->is_active = 1;
 157         hcd.hcd_priv = host;
 158
 159         return 0;
 160 }
 161
 162 int usb_lowlevel_stop(int index)
 163 {
 164         if (!host) {
 165                 printf("MUSB host is not registered\n");
 166                 return -ENODEV;
 167         }
 168
 169         musb_stop(host);
 170         return 0;
 171 }
 172 #endif /* CONFIG_MUSB_HOST */
 173
 174 #ifdef CONFIG_MUSB_GADGET
 175 static struct musb *gadget;
 176
 177 int usb_gadget_handle_interrupts(void)
 178 {
 179         WATCHDOG_RESET();
 180         if (!gadget || !gadget->isr)
 181                 return -EINVAL;
 182
 183         return gadget->isr(0, gadget);
 184 }
 185
 186 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 187 {
 188         int ret;
 189
 190         if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
 191             !driver->setup) {
 192                 printf("bad parameter.\n");
 193                 return -EINVAL;
 194         }
 195
 196         if (!gadget) {
 197                 printf("Controller uninitialized\n");
 198                 return -ENXIO;
 199         }
 200
 201         ret = musb_gadget_start(&gadget->g, driver);
 202         if (ret < 0) {
 203                 printf("gadget_start failed with %d\n", ret);
 204                 return ret;
 205         }
 206
 207         ret = driver->bind(&gadget->g);
 208         if (ret < 0) {
 209                 printf("bind failed with %d\n", ret);
 210                 return ret;
 211         }
 212
 213         return 0;
 214 }
 215
 216 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 217 {
 218         if (driver->disconnect)
 219                 driver->disconnect(&gadget->g);
 220         if (driver->unbind)
 221                 driver->unbind(&gadget->g);
 222         return 0;
 223 }
 224 #endif /* CONFIG_MUSB_GADGET */
 225
 226 int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
 227                         void *ctl_regs)
 228 {
 229         struct musb **musbp;
 230
 231         switch (plat->mode) {
 232 #ifdef CONFIG_MUSB_HOST
 233         case MUSB_HOST:
 234                 musbp = &host;
 235                 break;
 236 #endif
 237 #ifdef CONFIG_MUSB_GADGET
 238         case MUSB_PERIPHERAL:
 239                 musbp = &gadget;
 240                 break;
 241 #endif
 242         default:
 243                 return -EINVAL;
 244         }
 245
 246         *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
 247         if (!musbp) {
 248                 printf("Failed to init the controller\n");
 249                 return -EIO;
 250         }
 251
 252         return 0;
 253 }