Implementation of USB Download function supporting THOR protocol.
Signed-off-by: Lukasz Majewski l.majewski@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com Cc: Marek Vasut marex@denx.de --- drivers/usb/gadget/Makefile | 1 + drivers/usb/gadget/f_usbd_thor.c | 808 ++++++++++++++++++++++++++++++++++++++ include/linux/usb/f_usbd_thor.h | 62 +++ 3 files changed, 871 insertions(+), 0 deletions(-) create mode 100644 drivers/usb/gadget/f_usbd_thor.c create mode 100644 include/linux/usb/f_usbd_thor.h
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 2c067c8..0c48368 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -29,6 +29,7 @@ LIB := $(obj)libusb_gadget.o ifdef CONFIG_USB_GADGET COBJS-y += epautoconf.o config.o usbstring.o COBJS-$(CONFIG_USB_GADGET_S3C_UDC_OTG) += s3c_udc_otg.o +COBJS-$(CONFIG_USBDOWNLOAD_FUNCTION) += f_usbd_thor.o prot_thor.o COBJS-$(CONFIG_USBDOWNLOAD_GADGET) += g_dnl.o endif ifdef CONFIG_USB_ETHER diff --git a/drivers/usb/gadget/f_usbd_thor.c b/drivers/usb/gadget/f_usbd_thor.c new file mode 100644 index 0000000..e2394e3 --- /dev/null +++ b/drivers/usb/gadget/f_usbd_thor.c @@ -0,0 +1,808 @@ +/* + * f_usbd_thor.c -- USB THOR Downloader gadget function + * + * Copyright (C) 2011-2012 Samsung Electronics + * Lukasz Majewski l.majewski@samsung.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#undef DEBUG +#include <errno.h> +#include <common.h> +#include <malloc.h> +#include <linux/usb/ch9.h> +#include <usbdescriptors.h> +#include <linux/usb/gadget.h> +#include <linux/usb/composite.h> +#include <linux/usb/f_usbd_thor.h> +#include <linux/usb/cdc.h> + +#include <g_dnl.h> +#include <mmc.h> +#include <part.h> + +#include "usbd_thor.h" +#include "prot_thor.h" +#include "gadget_chips.h" + +#define DMA_BUFFER_SIZE (4096*4) + +static struct f_usbd *usbd_func; +static const unsigned buflen = 512; /* Standard request buffer length */ + +struct usbd_dev { + struct usb_gadget *gadget; + struct usb_request *req; /* for control responses */ + + /* IN/OUT EP's and correspoinding requests */ + struct usb_ep *in_ep, *out_ep, *int_ep; + struct usb_request *in_req, *out_req; + + /* Control flow variables*/ + int configuration_done; + int stop_done; + int rxdata; + int txdata; +}; + +struct f_usbd { + struct usb_function usb_function; + struct usbd_dev *dev; +}; + +static inline struct f_usbd *func_to_usbd(struct usb_function *f) +{ + return container_of(f, struct f_usbd, usb_function); +} + +/* maxpacket and other transfer characteristics vary by speed. */ +static inline struct usb_endpoint_descriptor * +ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, + struct usb_endpoint_descriptor *fs) +{ + if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) + return hs; + return fs; +} + +/* one interface in each configuration */ +static struct usb_interface_descriptor usb_downloader_intf_data = { + .bLength = sizeof usb_downloader_intf_data, + .bDescriptorType = USB_DT_INTERFACE, + + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_CDC_DATA, +}; + + +/* two full speed bulk endpoints; their use is config-dependent */ +static struct usb_endpoint_descriptor fs_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 fs_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +/* CDC configuration */ + +static struct usb_interface_descriptor usb_downloader_intf_int = { + .bLength = sizeof usb_downloader_intf_int, + .bDescriptorType = USB_DT_INTERFACE, + + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_COMM, + /* 0x02 Abstract Line Control Model */ + .bInterfaceSubClass = COMMUNICATIONS_INTERFACE_CLASS_CONTROL, + /* 0x01 Common AT commands */ + .bInterfaceProtocol = COMMUNICATIONS_V25TER_PROTOCOL, +}; + +static struct usb_class_header_function_descriptor usb_downloader_cdc_header = { + .bFunctionLength = sizeof usb_downloader_cdc_header, + .bDescriptorType = CS_INTERFACE, /* 0x24 */ + .bDescriptorSubtype = 0x00, /* 0x00 */ + .bcdCDC = 0x0110, +}; + + +static struct usb_class_call_management_descriptor usb_downloader_cdc_call = { + .bFunctionLength = sizeof usb_downloader_cdc_call, + .bDescriptorType = CS_INTERFACE, /* 0x24 */ + .bDescriptorSubtype = 0x01, /* 0x01 */ + .bmCapabilities = 0x00, + .bDataInterface = 0x01, +}; + +struct usb_class_abstract_control_descriptor usb_downloader_cdc_abstract = { + .bFunctionLength = sizeof usb_downloader_cdc_abstract, + .bDescriptorType = CS_INTERFACE, + .bDescriptorSubtype = 0x02, /* 0x02 */ + .bmCapabilities = 0x00, +}; + +struct usb_class_union_function_descriptor usb_downloader_cdc_union = { + .bFunctionLength = sizeof usb_downloader_cdc_union, + .bDescriptorType = CS_INTERFACE, + .bDescriptorSubtype = 0x06, /* 0x06 */ +}; + + +static struct usb_endpoint_descriptor fs_int_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = 3 | USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(16), + + .bInterval = 0x9, +}; + +static struct usb_interface_assoc_descriptor +usbd_iad_descriptor = { + .bLength = sizeof usbd_iad_descriptor, + .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, + + .bFirstInterface = 0, + .bInterfaceCount = 2, /* control + data */ + .bFunctionClass = USB_CLASS_COMM, + .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, + .bFunctionProtocol = USB_CDC_PROTO_NONE, + /* .iFunction = DYNAMIC */ +}; + + +/* + * usb 2.0 devices need to expose both high speed and full speed + * descriptors, unless they only run at full speed. + * + */ + +static struct usb_endpoint_descriptor hs_in_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor hs_out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor hs_int_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(16), + + .bInterval = 0x9, +}; + +static struct usb_qualifier_descriptor dev_qualifier = { + .bLength = sizeof dev_qualifier, + .bDescriptorType = USB_DT_DEVICE_QUALIFIER, + + .bcdUSB = __constant_cpu_to_le16(0x0200), + .bDeviceClass = USB_CLASS_VENDOR_SPEC, + + .bNumConfigurations = 2, +}; + +static const struct usb_descriptor_header *hs_usb_downloader_function[] = { + /* (struct usb_descriptor_header *) &otg_descriptor, */ + (struct usb_descriptor_header *) &usbd_iad_descriptor, + + (struct usb_descriptor_header *) &usb_downloader_intf_int, + (struct usb_descriptor_header *) &usb_downloader_cdc_header, + (struct usb_descriptor_header *) &usb_downloader_cdc_call, + (struct usb_descriptor_header *) &usb_downloader_cdc_abstract, + (struct usb_descriptor_header *) &usb_downloader_cdc_union, + (struct usb_descriptor_header *) &hs_int_desc, + + (struct usb_descriptor_header *) &usb_downloader_intf_data, + (struct usb_descriptor_header *) &hs_in_desc, + (struct usb_descriptor_header *) &hs_out_desc, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + + +static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length) +{ + struct usb_request *req; + + req = usb_ep_alloc_request(ep, GFP_ATOMIC); + if (req) { + req->length = length; + req->buf = malloc(length); + if (!req->buf) { + usb_ep_free_request(ep, req); + req = NULL; + } + } + return req; +} + +unsigned int usbd_rx_data(void) +{ + int status; + struct usbd_dev *dev = usbd_func->dev; + + static int data_to_rx = 0, tmp; + + data_to_rx = dev->out_req->length; + tmp = data_to_rx; + + do { + + if (data_to_rx > DMA_BUFFER_SIZE) + dev->out_req->length = DMA_BUFFER_SIZE; + else + dev->out_req->length = data_to_rx; + + debug("dev->out_req->length:%d dev->rxdata:%d\n", + dev->out_req->length, dev->rxdata); + + status = usb_ep_queue(dev->out_ep, dev->out_req, GFP_ATOMIC); + if (status) { + printf("kill %s: resubmit %d bytes --> %d\n", + dev->out_ep->name, dev->out_req->length, status); + usb_ep_set_halt(dev->out_ep); + /* FIXME recover later ... somehow */ + return -1; + } + + while (!dev->rxdata) + usb_gadget_handle_interrupts(); + + dev->rxdata = 0; + + if (data_to_rx > DMA_BUFFER_SIZE) + dev->out_req->buf += DMA_BUFFER_SIZE; + + data_to_rx -= dev->out_req->actual; + + } while (data_to_rx); + + return tmp; +} + +void usbd_tx_data(char *data, int len) +{ + int status; + struct usbd_dev *dev = usbd_func->dev; + + unsigned char *ptr = dev->in_req->buf; + + memset(ptr, '\0', len); + memcpy(ptr, data, len); + + dev->in_req->length = len; + + debug("%s: dev->in_req->length:%d to_cpy:%d\n", __func__, + dev->in_req->length, sizeof(data)); + + status = usb_ep_queue(dev->in_ep, dev->in_req, GFP_ATOMIC); + if (status) { + printf("kill %s: resubmit %d bytes --> %d\n", + dev->in_ep->name, dev->in_req->length, status); + usb_ep_set_halt(dev->in_ep); + /* FIXME recover later ... somehow */ + } + + /* Wait until tx interrupt received */ + while (!dev->txdata) + usb_gadget_handle_interrupts(); + + dev->txdata = 0; +} + +static void usbd_rx_tx_complete(struct usb_ep *ep, struct usb_request *req) +{ + int status = req->status; + struct usbd_dev *dev = usbd_func->dev; + + debug("%s: ep_ptr:%p, req_ptr:%p\n", __func__, ep, req); + switch (status) { + + case 0: /* normal completion? */ + if (ep == dev->out_ep) + dev->rxdata = 1; + else + dev->txdata = 1; + + break; + + /* this endpoint is normally active while we're configured */ + case -ECONNABORTED: /* hardware forced ep reset */ + case -ECONNRESET: /* request dequeued */ + case -ESHUTDOWN: /* disconnect from host */ + /* Exeptional situation - print error message */ + + case -EOVERFLOW: + printf("%s: ERROR:%d\n", __func__, status); + default: + debug("%s complete --> %d, %d/%d\n", ep->name, + status, req->actual, req->length); + case -EREMOTEIO: /* short read */ + break; + } +} + +static struct usb_request *usbd_start_ep(struct usb_ep *ep) +{ + struct usb_request *req; + + req = alloc_ep_req(ep, buflen); + debug("%s: ep:%p req:%p\n", __func__, ep, req); + + if (!req) + return NULL; + + memset(req->buf, 0, req->length); + req->complete = usbd_rx_tx_complete; + + memset(req->buf, 0x55, req->length); + + return req; +} + +static void usbd_setup_complete(struct usb_ep *ep, struct usb_request *req) +{ + if (req->status || req->actual != req->length) + debug("setup complete --> %d, %d/%d\n", + req->status, req->actual, req->length); +} + +static int +usbd_func_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) +{ + int value = 0; + struct usbd_dev *dev = usbd_func->dev; + struct usb_request *req = dev->req; + struct usb_gadget *gadget = dev->gadget; + + u16 len = le16_to_cpu(ctrl->wLength); + u16 wValue = le16_to_cpu(ctrl->wValue); + + debug("Req_Type: 0x%x Req: 0x%x wValue: 0x%x wIndex: 0x%x wLen: 0x%x\n", + ctrl->bRequestType, ctrl->bRequest, ctrl->wValue, ctrl->wIndex, + ctrl->wLength); + + switch (ctrl->bRequest) { + case SET_CONTROL_LINE_STATE: + value = 0; + + switch (wValue) { + case DEACTIVATE_CARRIER: + /* Before reset wait for all ACM requests to be done */ + dev->stop_done = 1; + break; + case ACTIVATE_CARRIER: + break; + default: + printf("usbd_setup:SetControlLine-unknown wValue: %d\n", + wValue); + } + break; + case SET_LINE_CODING: + value = len; + + /* Line Coding set done = configuration done */ + usbd_func->dev->configuration_done = 1; + break; + + default: + printf("usbd_setup: unknown request: %d\n", ctrl->bRequest); + } + + if (value >= 0) { + req->length = value; + req->zero = value < len; + value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC); + if (value < 0) { + debug("ep_queue --> %d\n", value); + req->status = 0; + } + } + + return value; +} + +/* Specific to the USBD_THOR protocol */ +void usbd_set_dma(char *addr, int len) +{ + struct usbd_dev *dev = usbd_func->dev; + + debug("in_req:%p, out_req:%p\n", dev->in_req, dev->out_req); + debug("addr:%p, len:%d\n", addr, len); + + dev->out_req->buf = addr; + dev->out_req->length = len; + +} + +static void usbd_cancel(int mode) +{ + + switch (mode) { + case END_BOOT: + run_command("run bootcmd", 0); + break; + default: + break; + } +} + +__attribute__ ((__aligned__ (__alignof__ (long long)))) +static char usbd_tx_buf[TX_DATA_LEN]; +__attribute__ ((__aligned__ (__alignof__ (long long)))) +static char usbd_rx_buf[RX_DATA_LEN]; + +char *usbd_tx_data_buf = usbd_tx_buf; +char *usbd_rx_data_buf = usbd_rx_buf; + +static const char *recv_key = "THOR"; +static const char *tx_key = "ROHT"; + +static int usbd_init(struct g_dnl *dnl) +{ + int ret; + struct usbd_dev *dev = usbd_func->dev; + + /* Wait for a device enumeration and configuration settings */ + debug("USBD enumeration/configuration setting....\n"); + while (!dev->configuration_done) + usb_gadget_handle_interrupts(); + + usbd_set_dma(usbd_rx_data_buf, strlen(recv_key)); + /* detect the download request from Host PC */ + ret = usbd_rx_data(); + + if (strncmp(usbd_rx_data_buf, recv_key, strlen(recv_key)) == 0) { + printf("Download request from the Host PC\n"); + msleep(30); + + strncpy(usbd_tx_data_buf, tx_key, strlen(tx_key)); + usbd_tx_data(usbd_tx_data_buf, strlen(tx_key)); + } else { + puts("Wrong reply information\n"); + return -1; + } + + return 0; +} + +static int usbd_handle(struct g_dnl *dnl) +{ + int ret; + + debug("USBD Handle start....\n"); + + /* receive the data from Host PC */ + while (1) { + usbd_set_dma(usbd_rx_data_buf, sizeof(rqt_box)); + ret = usbd_rx_data(); + + if (ret > 0) { + ret = process_data(dnl); + + if (ret < 0) + return -1; + else if (ret == 0) + return 0; + } else { + puts("No data received!\n"); + usbd_cancel(END_BOOT); + } + } + + return 0; +} + + +/* USB Downloader's specific definitions - required for this framework */ + +void usbd_fill_dnl(struct g_dnl *dnl) +{ + dnl->prot = THOR; + dnl->init = &usbd_init; + dnl->dl = &usbd_handle; + dnl->cmd = &usbd_handle; + + /* If the following pointers are set to NULL -> error */ + dnl->rx_buf = (unsigned int *) CONFIG_SYS_DOWN_ADDR; + dnl->tx_buf = NULL; +} + +static int usbd_func_bind(struct usb_configuration *c, struct usb_function *f) +{ + int status; + struct usb_ep *ep; + struct usbd_dev *dev; + struct f_usbd *f_usbd = func_to_usbd(f); + struct usb_gadget *gadget = c->cdev->gadget; + struct g_dnl *dnl = get_udc_gadget_private_data(gadget); + + usbd_func = f_usbd; + dev = calloc(sizeof(*dev), 1); + if (!dev) + return -ENOMEM; + + dev->gadget = gadget; + + f_usbd->dev = dev; + f_usbd->dev->configuration_done = 0; + f_usbd->dev->rxdata = 0; + f_usbd->dev->txdata = 0; + + debug("%s: usb_configuration: 0x%p usb_function: 0x%p\n", + __func__, c, f); + debug("f_usbd: 0x%p usbd: 0x%p\n", f_usbd, dev); + + /* EP0 */ + /* preallocate control response and buffer */ + dev->req = usb_ep_alloc_request(gadget->ep0, 0); + if (!dev->req) { + status = -ENOMEM; + goto fail; + } + dev->req->buf = malloc(buflen); + if (!dev->req->buf) { + status = -ENOMEM; + goto fail; + } + + dev->req->complete = usbd_setup_complete; + + /* DYNAMIC interface numbers assignments */ + status = usb_interface_id(c, f); + + if (status < 0) + goto fail; + + usb_downloader_intf_int.bInterfaceNumber = status; + usb_downloader_cdc_union.bMasterInterface = status; + + status = usb_interface_id(c, f); + + if (status < 0) + goto fail; + + usb_downloader_intf_data.bInterfaceNumber = status; + usb_downloader_cdc_union.bSlaveInterface0 = status; + + + /* allocate instance-specific endpoints */ + ep = usb_ep_autoconfig(gadget, &fs_in_desc); + if (!ep) { + status = -ENODEV; + goto fail; + } + + if (gadget_is_dualspeed(gadget)) { + hs_in_desc.bEndpointAddress = + fs_in_desc.bEndpointAddress; + } + + dev->in_ep = ep; /* Store IN EP for enabling @ setup */ + + + + ep = usb_ep_autoconfig(gadget, &fs_out_desc); + if (!ep) { + status = -ENODEV; + goto fail; + } + + if (gadget_is_dualspeed(gadget)) { + hs_out_desc.bEndpointAddress = + fs_out_desc.bEndpointAddress; + } + + dev->out_ep = ep; /* Store OUT EP for enabling @ setup */ + + /* note: a status/notification endpoint is, strictly speaking, + * optional. We don't treat it that way though! It's simpler, + * and some newer profiles don't treat it as optional. + */ + ep = usb_ep_autoconfig(gadget, &fs_int_desc); + if (!ep) { + status = -ENODEV; + goto fail; + } + + dev->int_ep = ep; + + if (gadget_is_dualspeed(gadget)) { + hs_int_desc.bEndpointAddress = + fs_int_desc.bEndpointAddress; + + /* copy descriptors, and track endpoint copies */ + f->hs_descriptors = (struct usb_descriptor_header **) + &hs_usb_downloader_function; + + if (!f->hs_descriptors) + goto fail; + } + + debug("%s: out_ep:%p out_req:%p\n", + __func__, dev->out_ep, dev->out_req); + printf("%s: dnl: 0x%p\n", __func__, dnl); + usbd_fill_dnl(dnl); + + return 0; + + fail: + free(dev); + return status; +} + +static void free_ep_req(struct usb_ep *ep, struct usb_request *req) +{ + free(req->buf); + usb_ep_free_request(ep, req); +} + +static void usbd_func_disable(struct usb_function *f) +{ + struct f_usbd *f_usbd = func_to_usbd(f); + struct usbd_dev *dev = f_usbd->dev; + + debug("%s:\n", __func__); + + /* Avoid freeing memory when ep is still claimed */ + if (dev->in_ep->driver_data) { + free_ep_req(dev->in_ep, dev->in_req); + usb_ep_disable(dev->in_ep); + dev->in_ep->driver_data = NULL; + } + + if (dev->out_ep->driver_data) { + free_ep_req(dev->out_ep, dev->out_req); + usb_ep_disable(dev->out_ep); + dev->out_ep->driver_data = NULL; + } + + if (dev->int_ep->driver_data) { + usb_ep_disable(dev->int_ep); + dev->int_ep->driver_data = NULL; + } +} + +static int usbd_eps_setup(struct usb_function *f) +{ + int result; + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_ep *ep; + struct usb_request *req; + struct usb_gadget *gadget = cdev->gadget; + struct usbd_dev *dev = usbd_func->dev; + + struct usb_endpoint_descriptor *d; + + ep = dev->in_ep; + d = ep_desc(gadget, &hs_in_desc, &fs_in_desc); + debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress); + + result = usb_ep_enable(ep, d); + + if (result == 0) { + ep->driver_data = cdev; /* claim */ + req = usbd_start_ep(ep); + if (req != NULL) { + dev->in_req = req; + } else { + usb_ep_disable(ep); + result = -EIO; + } + } else + goto exit; + + ep = dev->out_ep; + d = ep_desc(gadget, &hs_out_desc, &fs_out_desc); + debug("(d)bEndpointAddress: 0x%x\n", d->bEndpointAddress); + + result = usb_ep_enable(ep, d); + + if (result == 0) { + ep->driver_data = cdev; /* claim */ + req = usbd_start_ep(ep); + if (req != NULL) { + dev->out_req = req; + } else { + usb_ep_disable(ep); + result = -EIO; + } + } else + goto exit; + + /* ACM control EP */ + ep = dev->int_ep; + ep->driver_data = cdev; /* claim */ + + exit: + return result; +} + +static int usbd_func_set_alt(struct usb_function *f, + unsigned intf, unsigned alt) +{ + int result; + debug("%s: func: %s intf: %d alt: %d\n", + __func__, f->name, intf, alt); + + switch (intf) { + case 0: + debug("ACM INTR interface\n"); + break; + case 1: + debug("Communication Data interface\n"); + + result = usbd_eps_setup(f); + if (result) + printf("%s: EPs setup failed!\n", __func__); + break; + } + + return 0; +} + +static int usbd_func_init(struct usb_configuration *c) +{ + int status; + struct f_usbd *f_usbd; + + debug("%s: cdev: 0x%p\n", __func__, c->cdev); + + f_usbd = calloc(sizeof(*f_usbd), 1); + if (!f_usbd) + return -ENOMEM; + + f_usbd->usb_function.name = "f_usbd"; + f_usbd->usb_function.bind = usbd_func_bind; + f_usbd->usb_function.setup = usbd_func_setup; + f_usbd->usb_function.set_alt = usbd_func_set_alt; + f_usbd->usb_function.disable = usbd_func_disable; + + status = usb_add_function(c, &f_usbd->usb_function); + if (status) + free(f_usbd); + + return status; +} + +int f_usbd_add(struct usb_configuration *c) +{ + debug("%s:\n", __func__); + + return usbd_func_init(c); +} diff --git a/include/linux/usb/f_usbd_thor.h b/include/linux/usb/f_usbd_thor.h new file mode 100644 index 0000000..8002791 --- /dev/null +++ b/include/linux/usb/f_usbd_thor.h @@ -0,0 +1,62 @@ +/* + * USB THOR Downloader + * + * Copyright (C) 2012 Samsung Electronics + * Lukasz Majewski l.majewski@samsung.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef _USB_THOR_H_ +#define _USB_THOR_H_ + +#include <linux/usb/composite.h> + +/* ACM -> THOR GADGET download */ +#define DEACTIVATE_CARRIER 0x0000 +#define ACTIVATE_CARRIER 0x0003 + +#define SET_LINE_CODING 0x0020 +#define SET_CONTROL_LINE_STATE 0x0022 + +/* THOR Composite Gadget */ + +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 +#define STRING_SERIAL_IDX 2 + +/* Samsung's IDs */ +#define DRIVER_VENDOR_NUM 0x04E8 +#define DRIVER_PRODUCT_NUM 0x6601 + +#define STRING_MANUFACTURER 25 +#define STRING_PRODUCT 2 +#define STRING_USBDOWN 2 +#define CONFIG_USBDOWNLOADER 2 + +int f_usbd_add(struct usb_configuration *c); + +/* Interface to THOR protocol */ +#define TX_DATA_LEN 64 +#define RX_DATA_LEN 1024 + +extern char *usbd_tx_data_buf; +extern char *usbd_rx_data_buf; + +extern void usbd_set_dma(char *addr, int len); +extern unsigned int usbd_rx_data(void); +extern void usbd_tx_data(char *data, int len); + +#endif /* _USB_THOR_H_ */