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 #define __UBOOT__
   8 #include <usb.h>
   9 #include "linux-compat.h"
  10 #include "usb-compat.h"
  11 #include "musb_core.h"
  12 #include "musb_host.h"
  13 #include "musb_gadget.h"
  14
  15 #ifdef CONFIG_MUSB_HOST
  16 static struct musb *host;
  17 static struct usb_hcd hcd;
  18 static enum usb_device_speed host_speed;
  19
  20 static void musb_host_complete_urb(struct urb *urb)
  21 {
  22         urb->dev->status &= ~USB_ST_NOT_PROC;
  23         urb->dev->act_len = urb->actual_length;
  24 }
  25
  26 static struct usb_host_endpoint hep;
  27 static struct urb urb;
  28
  29 static struct urb *construct_urb(struct usb_device *dev, int endpoint_type,
  30                                 unsigned long pipe, void *buffer, int len,
  31                                 struct devrequest *setup, int interval)
  32 {
  33         int epnum = usb_pipeendpoint(pipe);
  34         int is_in = usb_pipein(pipe);
  35
  36         memset(&urb, 0, sizeof(struct urb));
  37         memset(&hep, 0, sizeof(struct usb_host_endpoint));
  38         INIT_LIST_HEAD(&hep.urb_list);
  39         INIT_LIST_HEAD(&urb.urb_list);
  40         urb.ep = &hep;
  41         urb.complete = musb_host_complete_urb;
  42         urb.status = -EINPROGRESS;
  43         urb.dev = dev;
  44         urb.pipe = pipe;
  45         urb.transfer_buffer = buffer;
  46         urb.transfer_dma = (unsigned long)buffer;
  47         urb.transfer_buffer_length = len;
  48         urb.setup_packet = (unsigned char *)setup;
  49
  50         urb.ep->desc.wMaxPacketSize =
  51                 __cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
  52                                 dev->epmaxpacketout[epnum]);
  53         urb.ep->desc.bmAttributes = endpoint_type;
  54         urb.ep->desc.bEndpointAddress =
  55                 (is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
  56         urb.ep->desc.bInterval = interval;
  57
  58         return &urb;
  59 }
  60
  61 #define MUSB_HOST_TIMEOUT       0x3ffffff
  62
  63 static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
  64 {
  65         struct musb *host = hcd->hcd_priv;
  66         int ret;
  67         int timeout;
  68
  69         ret = musb_urb_enqueue(hcd, urb, 0);
  70         if (ret < 0) {
  71                 printf("Failed to enqueue URB to controller\n");
  72                 return ret;
  73         }
  74
  75         timeout = MUSB_HOST_TIMEOUT;
  76         do {
  77                 if (ctrlc())
  78                         return -EIO;
  79                 host->isr(0, host);
  80         } while ((urb->dev->status & USB_ST_NOT_PROC) && --timeout);
  81
  82         return urb->status;
  83 }
  84
  85 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
  86                         void *buffer, int len, struct devrequest *setup)
  87 {
  88         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_CONTROL, pipe,
  89                                         buffer, len, setup, 0);
  90
  91         /* Fix speed for non hub-attached devices */
  92         if (!dev->parent)
  93                 dev->speed = host_speed;
  94
  95         return submit_urb(&hcd, urb);
  96 }
  97
  98
  99 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
 100                                         void *buffer, int len)
 101 {
 102         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_BULK, pipe,
 103                                         buffer, len, NULL, 0);
 104         return submit_urb(&hcd, urb);
 105 }
 106
 107 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
 108                                 void *buffer, int len, int interval)
 109 {
 110         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_INT, pipe,
 111                                         buffer, len, NULL, interval);
 112         return submit_urb(&hcd, urb);
 113 }
 114
 115 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 116 {
 117         u8 power;
 118         void *mbase;
 119         int timeout = MUSB_HOST_TIMEOUT;
 120
 121         if (!host) {
 122                 printf("MUSB host is not registered\n");
 123                 return -ENODEV;
 124         }
 125
 126         musb_start(host);
 127         mbase = host->mregs;
 128         do {
 129                 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
 130                         break;
 131         } while (--timeout);
 132         if (!timeout)
 133                 return -ENODEV;
 134
 135         power = musb_readb(mbase, MUSB_POWER);
 136         musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
 137         udelay(30000);
 138         power = musb_readb(mbase, MUSB_POWER);
 139         musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
 140         host->isr(0, host);
 141         host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
 142                         USB_SPEED_HIGH :
 143                         (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
 144                         USB_SPEED_FULL : USB_SPEED_LOW;
 145         host->is_active = 1;
 146         hcd.hcd_priv = host;
 147
 148         return 0;
 149 }
 150
 151 int usb_lowlevel_stop(int index)
 152 {
 153         if (!host) {
 154                 printf("MUSB host is not registered\n");
 155                 return -ENODEV;
 156         }
 157
 158         musb_stop(host);
 159         return 0;
 160 }
 161 #endif /* CONFIG_MUSB_HOST */
 162
 163 #ifdef CONFIG_MUSB_GADGET
 164 static struct musb *gadget;
 165
 166 int usb_gadget_handle_interrupts(void)
 167 {
 168         WATCHDOG_RESET();
 169         if (!gadget || !gadget->isr)
 170                 return -EINVAL;
 171
 172         return gadget->isr(0, gadget);
 173 }
 174
 175 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 176 {
 177         int ret;
 178
 179         if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
 180             !driver->setup) {
 181                 printf("bad parameter.\n");
 182                 return -EINVAL;
 183         }
 184
 185         if (!gadget) {
 186                 printf("Controller uninitialized\n");
 187                 return -ENXIO;
 188         }
 189
 190         ret = musb_gadget_start(&gadget->g, driver);
 191         if (ret < 0) {
 192                 printf("gadget_start failed with %d\n", ret);
 193                 return ret;
 194         }
 195
 196         ret = driver->bind(&gadget->g);
 197         if (ret < 0) {
 198                 printf("bind failed with %d\n", ret);
 199                 return ret;
 200         }
 201
 202         return 0;
 203 }
 204
 205 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 206 {
 207         /* TODO: implement me */
 208         return 0;
 209 }
 210 #endif /* CONFIG_MUSB_GADGET */
 211
 212 int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
 213                         void *ctl_regs)
 214 {
 215         struct musb **musbp;
 216
 217         switch (plat->mode) {
 218 #ifdef CONFIG_MUSB_HOST
 219         case MUSB_HOST:
 220                 musbp = &host;
 221                 break;
 222 #endif
 223 #ifdef CONFIG_MUSB_GADGET
 224         case MUSB_PERIPHERAL:
 225                 musbp = &gadget;
 226                 break;
 227 #endif
 228         default:
 229                 return -EINVAL;
 230         }
 231
 232         *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
 233         if (!musbp) {
 234                 printf("Failed to init the controller\n");
 235                 return -EIO;
 236         }
 237
 238         return 0;
 239 }