diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/f_usbnet.c | 839 | ||||
| -rw-r--r-- | drivers/usb/gadget/gadget_chips.h | 11 | ||||
| -rw-r--r-- | drivers/usb/phy/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/usb/phy/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/phy/cpcap-usb.c | 211 |
5 files changed, 1066 insertions, 2 deletions
diff --git a/drivers/usb/gadget/f_usbnet.c b/drivers/usb/gadget/f_usbnet.c new file mode 100644 index 00000000000..5431406aa20 --- /dev/null +++ b/drivers/usb/gadget/f_usbnet.c @@ -0,0 +1,839 @@ +/* + * Gadget Driver for Motorola USBNet + * + * Copyright (C) 2009 Motorola Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/device.h> +#include <linux/fcntl.h> +#include <linux/spinlock.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/if.h> +#include <linux/inetdevice.h> +#include <linux/uaccess.h> +#include <linux/workqueue.h> + +#include <linux/usb/ch9.h> +#include "gadget_chips.h" + + +/* + * Macro Defines + */ + +#define EP0_BUFSIZE 256 + + +/* Vendor Request to config IP */ +#define USBNET_SET_IP_ADDRESS 0x05 +#define USBNET_SET_SUBNET_MASK 0x06 +#define USBNET_SET_HOST_IP 0x07 + +/* Linux Network Interface */ +#define USB_MTU 1536 +#define MAX_BULK_TX_REQ_NUM 8 +#define MAX_BULK_RX_REQ_NUM 8 +#define MAX_INTR_RX_REQ_NUM 8 +#define STRING_INTERFACE 0 + +struct usbnet_context { + spinlock_t lock; /* For RX/TX list */ + struct net_device *dev; + + struct usb_gadget *gadget; + + struct usb_ep *bulk_in; + struct usb_ep *bulk_out; + struct usb_ep *intr_out; + u16 config; /* current USB config w_value */ + + struct list_head rx_reqs; + struct list_head tx_reqs; + + struct net_device_stats stats; + struct work_struct usbnet_config_wq; + u32 ip_addr; + u32 subnet_mask; + u32 router_ip; + u32 iff_flag; +}; + + +struct usbnet_device { + struct usb_function function; + struct usb_composite_dev *cdev; + struct usbnet_context *net_ctxt; +}; + +/* static strings, in UTF-8 */ +static struct usb_string usbnet_string_defs[] = { + [STRING_INTERFACE].s = "Motorola Networking Interface", + { /* ZEROES END LIST */ }, +}; + +static struct usb_gadget_strings usbnet_string_table = { + .language = 0x0409, /* en-us */ + .strings = usbnet_string_defs, +}; + +static struct usb_gadget_strings *usbnet_strings[] = { + &usbnet_string_table, + NULL, +}; + + + +/* There is only one interface. */ + +static struct usb_interface_descriptor usbnet_intf_desc = { + .bLength = sizeof usbnet_intf_desc, + .bDescriptorType = USB_DT_INTERFACE, + + .bNumEndpoints = 3, + .bInterfaceClass = 0x02, + .bInterfaceSubClass = 0x0a, + .bInterfaceProtocol = 0x01, +}; + + +static struct usb_endpoint_descriptor usbnet_fs_bulk_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor usbnet_fs_bulk_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor fs_intr_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(64), + .bInterval = 1, +}; + +static struct usb_descriptor_header *fs_function[] = { + (struct usb_descriptor_header *) &usbnet_intf_desc, + (struct usb_descriptor_header *) &usbnet_fs_bulk_in_desc, + (struct usb_descriptor_header *) &usbnet_fs_bulk_out_desc, + (struct usb_descriptor_header *) &fs_intr_out_desc, + NULL, +}; + +static struct usb_endpoint_descriptor usbnet_hs_bulk_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), + .bInterval = 0, +}; + +static struct usb_endpoint_descriptor usbnet_hs_bulk_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), + .bInterval = 0, +}; + +static struct usb_endpoint_descriptor hs_intr_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(64), + .bInterval = 1, +}; + +static struct usb_descriptor_header *hs_function[] = { + (struct usb_descriptor_header *) &usbnet_intf_desc, + (struct usb_descriptor_header *) &usbnet_hs_bulk_in_desc, + (struct usb_descriptor_header *) &usbnet_hs_bulk_out_desc, + (struct usb_descriptor_header *) &hs_intr_out_desc, + NULL, +}; +/* +static struct switch_dev usbnet_enable_device = { + .name = "usbnet_enable", +};*/ + +#define DO_NOT_STOP_QUEUE 0 +#define STOP_QUEUE 1 + +#define USBNETDBG(context, fmt, args...) \ + if (context && context->gadget) \ + dev_err(&(context->gadget->dev) , fmt , ## args) + +static const char *usb_description = "Motorola BLAN Interface"; + +static ssize_t usbnet_desc_show(struct device *dev, + struct device_attribute *attr, char *buff) +{ + ssize_t status = 0; + status = sprintf(buff, "%s\n", usb_description); + return status; +} + +static DEVICE_ATTR(description, S_IRUGO, usbnet_desc_show, NULL); + +static inline struct usbnet_device *usbnet_func_to_dev(struct usb_function *f) +{ + return container_of(f, struct usbnet_device, function); +} + + +static int ether_queue_out(struct usb_request *req , + struct usbnet_context *context) +{ + unsigned long flags; + struct sk_buff *skb; + int ret; + + skb = alloc_skb(USB_MTU + NET_IP_ALIGN, GFP_ATOMIC); + if (!skb) { + USBNETDBG(context, "%s: failed to alloc skb\n", __func__); + ret = -ENOMEM; + goto fail; + } + + /* + * RX: Do not move data by IP_ALIGN + * if the DMA Controller cannot handle it + */ + if (!gadget_dma32(context->gadget)) + skb_reserve(skb, NET_IP_ALIGN); + + req->buf = skb->data; + req->length = USB_MTU; + req->context = skb; + + ret = usb_ep_queue(context->bulk_out, req, GFP_KERNEL); + if (ret == 0) + return 0; + else + kfree_skb(skb); +fail: + spin_lock_irqsave(&context->lock, flags); + list_add_tail(&req->list, &context->rx_reqs); + spin_unlock_irqrestore(&context->lock, flags); + + return ret; +} + +struct usb_request *usb_get_recv_request(struct usbnet_context *context) +{ + unsigned long flags; + struct usb_request *req; + + spin_lock_irqsave(&context->lock, flags); + if (list_empty(&context->rx_reqs)) { + req = NULL; + } else { + req = list_first_entry(&context->rx_reqs, + struct usb_request, list); + list_del(&req->list); + } + spin_unlock_irqrestore(&context->lock, flags); + + return req; +} + +struct usb_request *usb_get_xmit_request(int stop_flag, struct net_device *dev) +{ + struct usbnet_context *context = netdev_priv(dev); + unsigned long flags; + struct usb_request *req; + + spin_lock_irqsave(&context->lock, flags); + if (list_empty(&context->tx_reqs)) { + req = NULL; + } else { + req = list_first_entry(&context->tx_reqs, + struct usb_request, list); + list_del(&req->list); + if (stop_flag == STOP_QUEUE && + list_empty(&context->tx_reqs)) + netif_stop_queue(dev); + } + spin_unlock_irqrestore(&context->lock, flags); + return req; +} + +static int usb_ether_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct usbnet_context *context = netdev_priv(dev); + struct usb_request *req; + unsigned long flags; + unsigned len; + int rc; + + req = usb_get_xmit_request(STOP_QUEUE, dev); + + if (!req) { + USBNETDBG(context, "%s: could not obtain tx request\n", + __func__); + return 1; + } + + /* Add 4 bytes CRC */ + skb->len += 4; + + /* ensure that we end with a short packet */ + len = skb->len; + if (!(len & 63) || !(len & 511)) + len++; + + /* Align Data to 32 bit if the dma controller requires it */ + if (gadget_dma32(context->gadget)) { + unsigned long align = (unsigned long)skb->data & 3; + if (WARN_ON(skb_headroom(skb) < align)) { + goto drop; + } else if (align) { + u8 *data = skb->data; + size_t len = skb_headlen(skb); + skb->data -= align; + memmove(skb->data, data, len); + skb_set_tail_pointer(skb, len); + } + } + + req->context = skb; + req->buf = skb->data; + req->length = len; + + rc = usb_ep_queue(context->bulk_in, req, GFP_KERNEL); + if (rc != 0) { +drop: + spin_lock_irqsave(&context->lock, flags); + if (list_empty(&context->tx_reqs)) + netif_start_queue(context->dev); + list_add_tail(&req->list, &context->tx_reqs); + spin_unlock_irqrestore(&context->lock, flags); + + dev_kfree_skb_any(skb); + context->stats.tx_dropped++; + + USBNETDBG(context, + "%s: could not queue tx request\n", __func__); + } + + return 0; +} + +static int usb_ether_open(struct net_device *dev) +{ + struct usbnet_context *context = netdev_priv(dev); + USBNETDBG(context, "%s\n", __func__); + return 0; +} + +static int usb_ether_stop(struct net_device *dev) +{ + struct usbnet_context *context = netdev_priv(dev); + USBNETDBG(context, "%s\n", __func__); + return 0; +} + +static struct net_device_stats *usb_ether_get_stats(struct net_device *dev) +{ + struct usbnet_context *context = netdev_priv(dev); + USBNETDBG(context, "%s\n", __func__); + return &context->stats; +} + +static void usbnet_if_config(struct work_struct *work) +{ + struct ifreq ifr; + mm_segment_t saved_fs; + unsigned err; + struct sockaddr_in *sin; + struct usbnet_context *context = container_of(work, + struct usbnet_context, usbnet_config_wq); + + pr_info("%s : Configuring with config = %d, ip_addr = 0x%08x," + " subnet = 0x%08x, router_ip = 0x%08x, flags = 0x%08x\n", + __func__, context->config, context->ip_addr, + context->subnet_mask, context->router_ip, context->iff_flag); + memset(&ifr, 0, sizeof(ifr)); + sin = (void *) &(ifr.ifr_ifru.ifru_addr); + strncpy(ifr.ifr_ifrn.ifrn_name, context->dev->name, + sizeof(ifr.ifr_ifrn.ifrn_name)); + sin->sin_family = AF_INET; + + sin->sin_addr.s_addr = context->ip_addr; + saved_fs = get_fs(); + set_fs(get_ds()); + err = devinet_ioctl(dev_net(context->dev), SIOCSIFADDR, &ifr); + if (err) + USBNETDBG(context, "%s: Error in SIOCSIFADDR\n", __func__); + + sin->sin_addr.s_addr = context->subnet_mask; + err = devinet_ioctl(dev_net(context->dev), SIOCSIFNETMASK, &ifr); + if (err) + USBNETDBG(context, "%s: Error in SIOCSIFNETMASK\n", __func__); + + sin->sin_addr.s_addr = context->ip_addr | ~(context->subnet_mask); + err = devinet_ioctl(dev_net(context->dev), SIOCSIFBRDADDR, &ifr); + if (err) + USBNETDBG(context, "%s: Error in SIOCSIFBRDADDR\n", __func__); + + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_ifrn.ifrn_name, context->dev->name, + sizeof(ifr.ifr_ifrn.ifrn_name)); + ifr.ifr_flags = context->dev->flags & ~IFF_UP; + ifr.ifr_flags |= context->iff_flag; + err = devinet_ioctl(dev_net(context->dev), SIOCSIFFLAGS, &ifr); + if (err) + USBNETDBG(context, "%s: Error in SIOCSIFFLAGS\n", __func__); + + set_fs(saved_fs); + //switch_set_state(&usbnet_enable_device, context->config); +} + +static const struct net_device_ops usbnet_eth_netdev_ops = { + .ndo_open = usb_ether_open, + .ndo_stop = usb_ether_stop, + .ndo_start_xmit = usb_ether_xmit, + .ndo_get_stats = usb_ether_get_stats, +}; + +static void usb_ether_setup(struct net_device *dev) +{ + struct usbnet_context *context = netdev_priv(dev); + INIT_LIST_HEAD(&context->rx_reqs); + INIT_LIST_HEAD(&context->tx_reqs); + + spin_lock_init(&context->lock); + context->dev = dev; + + dev->netdev_ops = &usbnet_eth_netdev_ops; + dev->watchdog_timeo = 20; + + ether_setup(dev); + + random_ether_addr(dev->dev_addr); +} + +/*-------------------------------------------------------------------------*/ +static void usbnet_cleanup(struct usbnet_device *dev) +{ + struct usbnet_context *context = dev->net_ctxt; + if (context) { + device_remove_file(&(context->dev->dev), &dev_attr_description); + unregister_netdev(context->dev); + free_netdev(context->dev); + dev->net_ctxt = NULL; + } +} + +static void usbnet_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct usbnet_device *dev = usbnet_func_to_dev(f); + struct usb_composite_dev *cdev = c->cdev; + struct usbnet_context *context = dev->net_ctxt; + struct usb_request *req; + + dev->cdev = cdev; + + /* Free BULK OUT Requests */ + while ((req = usb_get_recv_request(context))) + usb_ep_free_request(context->bulk_out, req); + + /* Free BULK IN Requests */ + while ((req = usb_get_xmit_request(DO_NOT_STOP_QUEUE, + context->dev))) { + usb_ep_free_request(context->bulk_in, req); + } + + context->config = 0; +} + +static void ether_out_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct sk_buff *skb = req->context; + struct usbnet_context *context = ep->driver_data; + + if (req->status == 0) { + skb_put(skb, req->actual); + skb->protocol = eth_type_trans(skb, context->dev); + if (gadget_dma32(context->gadget) && NET_IP_ALIGN) { + u8 *data = skb->data; + size_t len = skb_headlen(skb); + skb_reserve(skb, NET_IP_ALIGN); + memmove(skb->data, data, len); + } + context->stats.rx_packets++; + context->stats.rx_bytes += req->actual; + netif_rx(skb); + } else { + dev_kfree_skb_any(skb); + context->stats.rx_errors++; + } + + /* don't bother requeuing if we just went offline */ + if ((req->status == -ENODEV) || (req->status == -ESHUTDOWN)) { + unsigned long flags; + spin_lock_irqsave(&context->lock, flags); + list_add_tail(&req->list, &context->rx_reqs); + spin_unlock_irqrestore(&context->lock, flags); + } else { + if (ether_queue_out(req, context)) + USBNETDBG(context, "ether_out: cannot requeue\n"); + } +} + +static void ether_in_complete(struct usb_ep *ep, struct usb_request *req) +{ + unsigned long flags; + struct sk_buff *skb = req->context; + struct usbnet_context *context = ep->driver_data; + + if (req->status == 0) { + context->stats.tx_packets++; + context->stats.tx_bytes += req->actual; + } else { + context->stats.tx_errors++; + } + + dev_kfree_skb_any(skb); + + spin_lock_irqsave(&context->lock, flags); + if (list_empty(&context->tx_reqs)) + netif_start_queue(context->dev); + + list_add_tail(&req->list, &context->tx_reqs); + spin_unlock_irqrestore(&context->lock, flags); +} + +static int usbnet_bind(struct usb_configuration *c, + struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct usbnet_device *dev = usbnet_func_to_dev(f); + struct usbnet_context *context = dev->net_ctxt; + int n, rc, id; + struct usb_ep *ep; + struct usb_request *req; + unsigned long flags; + + dev->cdev = cdev; + + id = usb_interface_id(c, f); + if (id < 0) + return id; + usbnet_intf_desc.bInterfaceNumber = id; + context->gadget = cdev->gadget; + + /* Find all the endpoints we will use */ + ep = usb_ep_autoconfig(cdev->gadget, &usbnet_fs_bulk_in_desc); + if (!ep) { + USBNETDBG(context, "%s auto-configure hs_bulk_in_desc error\n", + __func__); + goto autoconf_fail; + } + ep->driver_data = context; + context->bulk_in = ep; + + ep = usb_ep_autoconfig(cdev->gadget, &usbnet_fs_bulk_out_desc); + if (!ep) { + USBNETDBG(context, "%s auto-configure hs_bulk_out_desc error\n", + __func__); + goto autoconf_fail; + } + ep->driver_data = context; + context->bulk_out = ep; + + + ep = usb_ep_autoconfig(cdev->gadget, &fs_intr_out_desc); + if (!ep) { + USBNETDBG(context, "%s auto-configure hs_intr_out_desc error\n", + __func__); + goto autoconf_fail; + } + ep->driver_data = context; + context->intr_out = ep; + + if (gadget_is_dualspeed(cdev->gadget)) { + + /* Assume endpoint addresses are the same for both speeds */ + usbnet_hs_bulk_in_desc.bEndpointAddress = + usbnet_fs_bulk_in_desc.bEndpointAddress; + usbnet_hs_bulk_out_desc.bEndpointAddress = + usbnet_fs_bulk_out_desc.bEndpointAddress; + hs_intr_out_desc.bEndpointAddress = + fs_intr_out_desc.bEndpointAddress; + } + + + rc = -ENOMEM; + + for (n = 0; n < MAX_BULK_RX_REQ_NUM; n++) { + req = usb_ep_alloc_request(context->bulk_out, + GFP_KERNEL); + if (!req) { + USBNETDBG(context, "%s: alloc request bulk_out fail\n", + __func__); + break; + } + req->complete = ether_out_complete; + spin_lock_irqsave(&context->lock, flags); + list_add_tail(&req->list, &context->rx_reqs); + spin_unlock_irqrestore(&context->lock, flags); + } + for (n = 0; n < MAX_BULK_TX_REQ_NUM; n++) { + req = usb_ep_alloc_request(context->bulk_in, + GFP_KERNEL); + if (!req) { + USBNETDBG(context, "%s: alloc request bulk_in fail\n", + __func__); + break; + } + req->complete = ether_in_complete; + spin_lock_irqsave(&context->lock, flags); + list_add_tail(&req->list, &context->tx_reqs); + spin_unlock_irqrestore(&context->lock, flags); + } + + return 0; + +autoconf_fail: + rc = -ENOTSUPP; + usbnet_unbind(c, f); + return rc; +} + + + + +static void do_set_config(struct usb_function *f, u16 new_config) +{ + struct usbnet_device *dev = usbnet_func_to_dev(f); + struct usbnet_context *context = dev->net_ctxt; + int result = 0; + struct usb_request *req; + int high_speed_flag = 0; + + if (context->config == new_config) /* Config did not change */ + return; + + context->config = new_config; + + if (new_config == 1) { /* Enable End points */ + if (gadget_is_dualspeed(context->gadget) + && context->gadget->speed == USB_SPEED_HIGH) + high_speed_flag = 1; + + if (high_speed_flag){ + context->bulk_in->desc = &usbnet_hs_bulk_in_desc; + result = usb_ep_enable(context->bulk_in); + } + else{ + context->bulk_in->desc = &usbnet_fs_bulk_in_desc; + result = usb_ep_enable(context->bulk_in); + } + + if (result != 0) { + USBNETDBG(context, + "%s: failed to enable BULK_IN EP ret=%d\n", + __func__, result); + } + + context->bulk_in->driver_data = context; + + if (high_speed_flag){ + context->bulk_out->desc = &usbnet_hs_bulk_out_desc; + result = usb_ep_enable(context->bulk_out); + } + else{ + context->bulk_out->desc = &usbnet_fs_bulk_out_desc; + result = usb_ep_enable(context->bulk_out); + } + + if (result != 0) { + USBNETDBG(context, + "%s: failed to enable BULK_OUT EP ret = %d\n", + __func__, result); + } + + context->bulk_out->driver_data = context; + + if (high_speed_flag){ + context->intr_out->desc = &hs_intr_out_desc; + result = usb_ep_enable(context->intr_out); + } + else{ + context->intr_out->desc = &fs_intr_out_desc; + result = usb_ep_enable(context->intr_out); + } + + if (result != 0) { + USBNETDBG(context, + "%s: failed to enable INTR_OUT EP ret = %d\n", + __func__, result); + } + + context->intr_out->driver_data = context; + + /* we're online -- get all rx requests queued */ + while ((req = usb_get_recv_request(context))) { + if (ether_queue_out(req, context)) { + USBNETDBG(context, + "%s: ether_queue_out failed\n", + __func__); + break; + } + } + + } else {/* Disable Endpoints */ + if (context->bulk_in) + usb_ep_disable(context->bulk_in); + if (context->bulk_out) + usb_ep_disable(context->bulk_out); + if (context->intr_out) + usb_ep_disable(context->intr_out); + context->ip_addr = 0; + context->subnet_mask = 0; + context->router_ip = 0; + context->iff_flag = 0; + schedule_work(&context->usbnet_config_wq); + } +} + + +static int usbnet_set_alt(struct usb_function *f, + unsigned intf, unsigned alt) +{ + struct usbnet_device *dev = usbnet_func_to_dev(f); + struct usbnet_context *context = dev->net_ctxt; + USBNETDBG(context, "usbnet_set_alt intf: %d alt: %d\n", intf, alt); + do_set_config(f, 1); + return 0; +} + +static int usbnet_ctrlrequest(struct usbnet_device *dev, + struct usb_composite_dev *cdev, + const struct usb_ctrlrequest *ctrl) +{ + struct usbnet_context *context = dev->net_ctxt; + int rc = -EOPNOTSUPP; + int wIndex = le16_to_cpu(ctrl->wIndex); + int wValue = le16_to_cpu(ctrl->wValue); + int wLength = le16_to_cpu(ctrl->wLength); + struct usb_request *req = cdev->req; + + if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_VENDOR) { + switch (ctrl->bRequest) { + case USBNET_SET_IP_ADDRESS: + context->ip_addr = (wValue << 16) | wIndex; + rc = 0; + break; + case USBNET_SET_SUBNET_MASK: + context->subnet_mask = (wValue << 16) | wIndex; + rc = 0; + break; + case USBNET_SET_HOST_IP: + context->router_ip = (wValue << 16) | wIndex; + rc = 0; + break; + default: + break; + } + + if (context->ip_addr && context->subnet_mask + && context->router_ip) { + context->iff_flag = IFF_UP; + /* schedule a work queue to do this because we + need to be able to sleep */ + schedule_work(&context->usbnet_config_wq); + } + } + + /* respond with data transfer or status phase? */ + if (rc >= 0) { + req->zero = rc < wLength; + req->length = rc; + rc = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + if (rc < 0) + USBNETDBG(context, "usbnet setup response error\n"); + } + + return rc; +} + +static void usbnet_disable(struct usb_function *f) +{ + struct usbnet_device *dev = usbnet_func_to_dev(f); + struct usbnet_context *context = dev->net_ctxt; + USBNETDBG(context, "%s\n", __func__); + do_set_config(f, 0); +} + +static void usbnet_suspend(struct usb_function *f) +{ + struct usbnet_device *dev = usbnet_func_to_dev(f); + struct usbnet_context *context = dev->net_ctxt; + USBNETDBG(context, "%s\n", __func__); +} + +static void usbnet_resume(struct usb_function *f) +{ + struct usbnet_device *dev = usbnet_func_to_dev(f); + struct usbnet_context *context = dev->net_ctxt; + USBNETDBG(context, "%s\n", __func__); +} + +int usbnet_bind_config(struct usbnet_device *dev, struct usb_configuration *c) +{ + int ret, status; + + pr_debug("usbnet_bind_config\n"); + + if (usbnet_string_defs[STRING_INTERFACE].id == 0) { + status = usb_string_id(c->cdev); + if (status >= 0) { + usbnet_string_defs[STRING_INTERFACE].id = status; + usbnet_intf_desc.iInterface = status; + } + } + + dev->cdev = c->cdev; + dev->function.name = "usbnet"; + dev->function.fs_descriptors = fs_function; + dev->function.hs_descriptors = hs_function; + dev->function.bind = usbnet_bind; + dev->function.unbind = usbnet_unbind; + dev->function.set_alt = usbnet_set_alt; + dev->function.disable = usbnet_disable; + dev->function.suspend = usbnet_suspend; + dev->function.resume = usbnet_resume; + dev->function.strings = usbnet_strings; + + ret = usb_add_function(c, &dev->function); + + return ret; +} diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h index bcd04bc66b9..9ee7a549651 100644 --- a/drivers/usb/gadget/gadget_chips.h +++ b/drivers/usb/gadget/gadget_chips.h @@ -51,5 +51,14 @@ static inline bool gadget_supports_altsettings(struct usb_gadget *gadget) /* Everything else is *presumably* fine ... */ return true; } - + /** + * gadget_dma32 - return true if we want buffer aligned on 32 bits (for dma) + * @gadget: the gadget in question + */ +static inline bool gadget_dma32(struct usb_gadget *gadget) +{ + if (gadget_is_musbhdrc(gadget)) + return true; + return false; +} #endif /* __GADGET_CHIPS_H */ diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 3312ad2bb67..6fcfa960fad 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -217,5 +217,9 @@ config USB_ULPI_VIEWPORT help Provides read/write operations to the ULPI phy register set for controllers with a viewport register (e.g. Chipidea/ARC controllers). - +config CPCAP_USB + bool "CPCAP USB Transceiver Driver" + help + Enable this to support the USB OTG transceiver on the + Motorola CPCAP PMIC endif # USB_PHY diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index a0a6cbad880..bef5f525ab8 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -32,3 +32,4 @@ obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o obj-$(CONFIG_USB_RCAR_PHY) += phy-rcar-usb.o obj-$(CONFIG_USB_ULPI) += phy-ulpi.o obj-$(CONFIG_USB_ULPI_VIEWPORT) += phy-ulpi-viewport.o +obj-$(CONFIG_CPCAP_USB) += cpcap-usb.o diff --git a/drivers/usb/phy/cpcap-usb.c b/drivers/usb/phy/cpcap-usb.c new file mode 100644 index 00000000000..6e7bc16b695 --- /dev/null +++ b/drivers/usb/phy/cpcap-usb.c @@ -0,0 +1,211 @@ +/* + * cpcap_usb - CPCAP USB transceiver, talking to OMAP OTG controller + * + * Copyright (C) 2004-2007 Texas Instruments + * Copyright (C) 2008 Nokia Corporation + * Copyright (C) 2009 Google, Inc. + * Contact: Erik Gilling <konkers@android.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Based on twl4030-usb.c + * + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/spinlock.h> +#include <linux/workqueue.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/usb/otg.h> +#include <linux/spi/cpcap.h> +#include <linux/spi/cpcap-regbits.h> + +enum linkstat { + USB_LINK_UNKNOWN = 0, + USB_LINK_NONE, + USB_LINK_VBUS, + USB_LINK_ID, +}; + +struct cpcap_usb { + //struct otg_transceiver otg; + struct usb_phy phy; + struct device *dev; + + struct cpcap_device *cpcap; + + /* for vbus reporting with irqs disabled */ + spinlock_t lock; + + int irq; + u8 linkstat; + u8 asleep; + bool irq_enabled; +}; + +static int cpcap_set_suspend(struct usb_phy *x, int suspend) +{ + return 0; +} + + +static int cpcap_set_peripheral(struct usb_otg *otg, + struct usb_gadget *gadget) +{ + struct usb_phy *phy = otg->phy; + + otg->gadget = gadget; + if (!gadget) + phy->state = OTG_STATE_UNDEFINED; + + return 0; +} + +static int cpcap_set_host(struct usb_otg *otg, struct usb_bus *host) +{ + struct usb_phy *phy = otg->phy; + + otg->host = host; + if (!host) + phy->state = OTG_STATE_UNDEFINED; + + return 0; +} + + +static int cpcap_usb_setup(struct cpcap_usb *cpcap) +{ + unsigned short mask; + unsigned short value; + int r; + + r = cpcap_regacc_read(cpcap->cpcap, CPCAP_REG_INTS2, &value); + + if (value & CPCAP_BIT_SE1_S) + mask = CPCAP_BIT_VBUSEN_SPI | CPCAP_BIT_VBUSPU_SPI | + CPCAP_BIT_SUSPEND_SPI | CPCAP_BIT_ULPI_SPI_SEL; + else + mask = CPCAP_BIT_VBUSEN_SPI | CPCAP_BIT_VBUSPU_SPI | + CPCAP_BIT_DMPD_SPI | CPCAP_BIT_DPPD_SPI | + CPCAP_BIT_SUSPEND_SPI | CPCAP_BIT_PU_SPI | + CPCAP_BIT_ULPI_SPI_SEL; + + r = cpcap_regacc_write(cpcap->cpcap, CPCAP_REG_USBC3, 0x0, mask); + if (r < 0) { + dev_err(cpcap->dev, + "Can't disable SPI control of CPCAP transceiver\n"); + return r; + } + return 0; +} +static int cpcap_usb_set_vbus(struct usb_otg *otg, bool enabled) +{ + return 0; +} +static int cpcap_usb_start_srp(struct usb_otg *otg) +{ + return 0; +} +static int cpcap_usb_probe(struct platform_device *pdev) +{ + + struct cpcap_usb *cpcap; + struct usb_otg *otg; + int err; + cpcap = devm_kzalloc(&pdev->dev, sizeof(*cpcap), GFP_KERNEL); + if (!cpcap) { + dev_err(&pdev->dev, "unable to allocate memory for cpcap PHY\n"); + return -ENOMEM; + } + + otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL); + if (!otg) { + dev_err(&pdev->dev, "unable to allocate memory for USB OTG\n"); + return -ENOMEM; + } + + cpcap->dev = &pdev->dev; + cpcap->phy.dev = cpcap->dev; + cpcap->phy.label = "cpcap"; + cpcap->phy.set_suspend = cpcap_set_suspend; + cpcap->phy.otg = otg; + cpcap->phy.type = USB_PHY_TYPE_USB2; + cpcap->asleep = 1; + cpcap->cpcap = pdev->dev.platform_data; + + + otg->set_host = cpcap_set_host; + otg->set_peripheral = cpcap_set_peripheral; + otg->set_vbus = cpcap_usb_set_vbus; + otg->start_srp = cpcap_usb_start_srp; + otg->phy = &cpcap->phy; + + spin_lock_init(&cpcap->lock); + usb_add_phy_dev(&cpcap->phy); + + platform_set_drvdata(pdev, cpcap); + + + err = cpcap_usb_setup(cpcap); + if (err < 0) + goto err0; + return 0; + +err0: + usb_remove_phy(&cpcap->phy); + devm_kfree(&pdev->dev,cpcap); + devm_kfree(&pdev->dev,otg); + return err; +} + +static int cpcap_usb_remove(struct platform_device *pdev) +{ + struct cpcap_usb *cpcap = platform_get_drvdata(pdev); + devm_kfree(&pdev->dev,cpcap); + + return 0; +} + +static struct platform_driver cpcap_usb_driver = { + .probe = cpcap_usb_probe, + .remove = (cpcap_usb_remove), + .driver = { + .name = "cpcap_usb", + .owner = THIS_MODULE, + }, +}; + +static int __init cpcap_usb_init(void) +{ + return cpcap_driver_register(&cpcap_usb_driver); +} +subsys_initcall(cpcap_usb_init); + +static void __exit cpcap_usb_exit(void) +{ + platform_driver_unregister(&cpcap_usb_driver); +} +module_exit(cpcap_usb_exit); + + + + +MODULE_ALIAS("platform:cpcap_usb"); +MODULE_DESCRIPTION("CPCAP USB transceiver driver"); +MODULE_LICENSE("GPL"); |