drivers/usb/musb-new/musb_uboot.c

   1 #include <common.h>
   2 #include <asm/errno.h>
   3 #include <linux/usb/ch9.h>
   4 #include <linux/usb/gadget.h>
   5
   6 #define __UBOOT__
   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 #define MUSB_HOST_TIMEOUT       0x3ffffff
  61
  62 static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
  63 {
  64         struct musb *host = hcd->hcd_priv;
  65         int ret;
  66         int timeout;
  67
  68         ret = musb_urb_enqueue(hcd, urb, 0);
  69         if (ret < 0) {
  70                 printf("Failed to enqueue URB to controller\n");
  71                 return ret;
  72         }
  73
  74         timeout = MUSB_HOST_TIMEOUT;
  75         do {
  76                 if (ctrlc())
  77                         return -EIO;
  78                 host->isr(0, host);
  79         } while ((urb->dev->status & USB_ST_NOT_PROC) && --timeout);
  80
  81         return urb->status;
  82 }
  83
  84 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
  85                         void *buffer, int len, struct devrequest *setup)
  86 {
  87         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_CONTROL, pipe,
  88                                         buffer, len, setup, 0);
  89
  90         /* Fix speed for non hub-attached devices */
  91         if (!dev->parent)
  92                 dev->speed = host_speed;
  93
  94         return submit_urb(&hcd, urb);
  95 }
  96
  97
  98 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
  99                                         void *buffer, int len)
 100 {
 101         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_BULK, pipe,
 102                                         buffer, len, NULL, 0);
 103         return submit_urb(&hcd, urb);
 104 }
 105
 106 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
 107                                 void *buffer, int len, int interval)
 108 {
 109         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_INT, pipe,
 110                                         buffer, len, NULL, interval);
 111         return submit_urb(&hcd, urb);
 112 }
 113
 114 int usb_lowlevel_init(int index, void **controller)
 115 {
 116         u8 power;
 117         void *mbase;
 118         int timeout = MUSB_HOST_TIMEOUT;
 119
 120         if (!host) {
 121                 printf("MUSB host is not registered\n");
 122                 return -ENODEV;
 123         }
 124
 125         musb_start(host);
 126         mbase = host->mregs;
 127         do {
 128                 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
 129                         break;
 130         } while (--timeout);
 131         if (!timeout)
 132                 return -ENODEV;
 133
 134         power = musb_readb(mbase, MUSB_POWER);
 135         musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
 136         udelay(30000);
 137         power = musb_readb(mbase, MUSB_POWER);
 138         musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
 139         host->isr(0, host);
 140         host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
 141                         USB_SPEED_HIGH :
 142                         (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
 143                         USB_SPEED_FULL : USB_SPEED_LOW;
 144         host->is_active = 1;
 145         hcd.hcd_priv = host;
 146
 147         return 0;
 148 }
 149
 150 int usb_lowlevel_stop(int index)
 151 {
 152         if (!host) {
 153                 printf("MUSB host is not registered\n");
 154                 return -ENODEV;
 155         }
 156
 157         musb_stop(host);
 158         return 0;
 159 }
 160 #endif /* CONFIG_MUSB_HOST */
 161
 162 #ifdef CONFIG_MUSB_GADGET
 163 static struct musb *gadget;
 164
 165 int usb_gadget_handle_interrupts(void)
 166 {
 167         if (!gadget || !gadget->isr)
 168                 return -EINVAL;
 169
 170         return gadget->isr(0, gadget);
 171 }
 172
 173 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 174 {
 175         int ret;
 176
 177         if (!driver || driver->speed < USB_SPEED_HIGH || !driver->bind ||
 178             !driver->setup) {
 179                 printf("bad parameter.\n");
 180                 return -EINVAL;
 181         }
 182
 183         if (!gadget) {
 184                 printf("Controller uninitialized\n");
 185                 return -ENXIO;
 186         }
 187
 188         ret = musb_gadget_start(&gadget->g, driver);
 189         if (ret < 0) {
 190                 printf("gadget_start failed with %d\n", ret);
 191                 return ret;
 192         }
 193
 194         ret = driver->bind(&gadget->g);
 195         if (ret < 0) {
 196                 printf("bind failed with %d\n", ret);
 197                 return ret;
 198         }
 199
 200         return 0;
 201 }
 202
 203 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 204 {
 205         /* TODO: implement me */
 206         return 0;
 207 }
 208 #endif /* CONFIG_MUSB_GADGET */
 209
 210 int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
 211                         void *ctl_regs)
 212 {
 213         struct musb **musbp;
 214
 215         switch (plat->mode) {
 216 #ifdef CONFIG_MUSB_HOST
 217         case MUSB_HOST:
 218                 musbp = &host;
 219                 break;
 220 #endif
 221 #ifdef CONFIG_MUSB_GADGET
 222         case MUSB_PERIPHERAL:
 223                 musbp = &gadget;
 224                 break;
 225 #endif
 226         default:
 227                 return -EINVAL;
 228         }
 229
 230         *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
 231         if (!musbp) {
 232                 printf("Failed to init the controller\n");
 233                 return -EIO;
 234         }
 235
 236         return 0;
 237 }