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         return urb->status;
  81 }
  82
  83 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
  84                         void *buffer, int len, struct devrequest *setup)
  85 {
  86         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_CONTROL, pipe,
  87                                         buffer, len, setup, 0);
  88
  89         /* Fix speed for non hub-attached devices */
  90         if (!dev->parent)
  91                 dev->speed = host_speed;
  92
  93         return submit_urb(&hcd, urb);
  94 }
  95
  96
  97 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
  98                                         void *buffer, int len)
  99 {
 100         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_BULK, pipe,
 101                                         buffer, len, NULL, 0);
 102         return submit_urb(&hcd, urb);
 103 }
 104
 105 int submit_int_msg(struct usb_device *dev, unsigned long pipe,
 106                                 void *buffer, int len, int interval)
 107 {
 108         struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_INT, pipe,
 109                                         buffer, len, NULL, interval);
 110         return submit_urb(&hcd, urb);
 111 }
 112
 113 void usb_reset_root_port(void)
 114 {
 115         void *mbase = host->mregs;
 116         u8 power;
 117
 118         power = musb_readb(mbase, MUSB_POWER);
 119         power &= 0xf0;
 120         musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
 121         mdelay(50);
 122         power = musb_readb(mbase, MUSB_POWER);
 123         musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
 124         host->isr(0, host);
 125         host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
 126                         USB_SPEED_HIGH :
 127                         (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
 128                         USB_SPEED_FULL : USB_SPEED_LOW;
 129         mdelay((host_speed == USB_SPEED_LOW) ? 200 : 50);
 130 }
 131
 132 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 133 {
 134         void *mbase;
 135         /* USB spec says it may take up to 1 second for a device to connect */
 136         unsigned long timeout = get_timer(0) + 1000;
 137
 138         if (!host) {
 139                 printf("MUSB host is not registered\n");
 140                 return -ENODEV;
 141         }
 142
 143         musb_start(host);
 144         mbase = host->mregs;
 145         do {
 146                 if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
 147                         break;
 148         } while (get_timer(0) < timeout);
 149         if (get_timer(0) >= timeout)
 150                 return -ENODEV;
 151
 152         usb_reset_root_port();
 153         host->is_active = 1;
 154         hcd.hcd_priv = host;
 155
 156         return 0;
 157 }
 158
 159 int usb_lowlevel_stop(int index)
 160 {
 161         if (!host) {
 162                 printf("MUSB host is not registered\n");
 163                 return -ENODEV;
 164         }
 165
 166         musb_stop(host);
 167         return 0;
 168 }
 169 #endif /* CONFIG_MUSB_HOST */
 170
 171 #ifdef CONFIG_MUSB_GADGET
 172 static struct musb *gadget;
 173
 174 int usb_gadget_handle_interrupts(void)
 175 {
 176         WATCHDOG_RESET();
 177         if (!gadget || !gadget->isr)
 178                 return -EINVAL;
 179
 180         return gadget->isr(0, gadget);
 181 }
 182
 183 int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 184 {
 185         int ret;
 186
 187         if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
 188             !driver->setup) {
 189                 printf("bad parameter.\n");
 190                 return -EINVAL;
 191         }
 192
 193         if (!gadget) {
 194                 printf("Controller uninitialized\n");
 195                 return -ENXIO;
 196         }
 197
 198         ret = musb_gadget_start(&gadget->g, driver);
 199         if (ret < 0) {
 200                 printf("gadget_start failed with %d\n", ret);
 201                 return ret;
 202         }
 203
 204         ret = driver->bind(&gadget->g);
 205         if (ret < 0) {
 206                 printf("bind failed with %d\n", ret);
 207                 return ret;
 208         }
 209
 210         return 0;
 211 }
 212
 213 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 214 {
 215         if (driver->disconnect)
 216                 driver->disconnect(&gadget->g);
 217         if (driver->unbind)
 218                 driver->unbind(&gadget->g);
 219         return 0;
 220 }
 221 #endif /* CONFIG_MUSB_GADGET */
 222
 223 int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
 224                         void *ctl_regs)
 225 {
 226         struct musb **musbp;
 227
 228         switch (plat->mode) {
 229 #ifdef CONFIG_MUSB_HOST
 230         case MUSB_HOST:
 231                 musbp = &host;
 232                 break;
 233 #endif
 234 #ifdef CONFIG_MUSB_GADGET
 235         case MUSB_PERIPHERAL:
 236                 musbp = &gadget;
 237                 break;
 238 #endif
 239         default:
 240                 return -EINVAL;
 241         }
 242
 243         *musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
 244         if (!musbp) {
 245                 printf("Failed to init the controller\n");
 246                 return -EIO;
 247         }
 248
 249         return 0;
 250 }