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_FULL || !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 } 238