diff options
Diffstat (limited to 'drivers/usb/gadget/f_sdp.c')
-rw-r--r-- | drivers/usb/gadget/f_sdp.c | 123 |
1 files changed, 107 insertions, 16 deletions
diff --git a/drivers/usb/gadget/f_sdp.c b/drivers/usb/gadget/f_sdp.c index 9b7372815d..c5b35945c1 100644 --- a/drivers/usb/gadget/f_sdp.c +++ b/drivers/usb/gadget/f_sdp.c @@ -71,6 +71,8 @@ struct hid_report { #define SDP_COMMAND_LEN 16 +#define SDP_HID_PACKET_SIZE_EP1 1024 + #define SDP_EXIT 1 struct sdp_command { @@ -84,8 +86,10 @@ struct sdp_command { enum sdp_state { SDP_STATE_IDLE, + SDP_STATE_RX_CMD, SDP_STATE_RX_DCD_DATA, SDP_STATE_RX_FILE_DATA, + SDP_STATE_RX_FILE_DATA_BUSY, SDP_STATE_TX_SEC_CONF, SDP_STATE_TX_SEC_CONF_BUSY, SDP_STATE_TX_REGISTER, @@ -116,8 +120,12 @@ struct f_sdp { /* EP1 IN */ struct usb_ep *in_ep; struct usb_request *in_req; + /* EP1 OUT */ + struct usb_ep *out_ep; + struct usb_request *out_req; bool configuration_done; + bool ep_int_enable; }; static struct f_sdp *sdp_func; @@ -131,7 +139,7 @@ static struct usb_interface_descriptor sdp_intf_runtime = { .bLength = sizeof(sdp_intf_runtime), .bDescriptorType = USB_DT_INTERFACE, .bAlternateSetting = 0, - .bNumEndpoints = 1, + .bNumEndpoints = 2, .bInterfaceClass = USB_CLASS_HID, .bInterfaceSubClass = 0, .bInterfaceProtocol = 0, @@ -161,6 +169,16 @@ static struct usb_endpoint_descriptor in_desc = { .bInterval = 1, }; +static struct usb_endpoint_descriptor out_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, /*USB_DT_CS_ENDPOINT*/ + + .bEndpointAddress = 1 | USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = 64, + .bInterval = 1, +}; + static struct usb_endpoint_descriptor in_hs_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, /*USB_DT_CS_ENDPOINT*/ @@ -171,10 +189,21 @@ static struct usb_endpoint_descriptor in_hs_desc = { .bInterval = 1, }; +static struct usb_endpoint_descriptor out_hs_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, /*USB_DT_CS_ENDPOINT*/ + + .bEndpointAddress = 1 | USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = SDP_HID_PACKET_SIZE_EP1, + .bInterval = 1, +}; + static struct usb_descriptor_header *sdp_runtime_descs[] = { (struct usb_descriptor_header *)&sdp_intf_runtime, (struct usb_descriptor_header *)&sdp_hid_desc, (struct usb_descriptor_header *)&in_desc, + (struct usb_descriptor_header *)&out_desc, NULL, }; @@ -182,6 +211,7 @@ static struct usb_descriptor_header *sdp_runtime_hs_descs[] = { (struct usb_descriptor_header *)&sdp_intf_runtime, (struct usb_descriptor_header *)&sdp_hid_desc, (struct usb_descriptor_header *)&in_hs_desc, + (struct usb_descriptor_header *)&out_hs_desc, NULL, }; @@ -347,7 +377,7 @@ static void sdp_rx_data_complete(struct usb_ep *ep, struct usb_request *req) int status = req->status; u8 *data = req->buf; u8 report = data[0]; - int datalen = req->length - 1; + int datalen = req->actual - 1; if (status != 0) { pr_err("Status: %d\n", status); @@ -370,13 +400,15 @@ static void sdp_rx_data_complete(struct usb_ep *ep, struct usb_request *req) sdp->dnl_bytes_remaining -= datalen; } - if (sdp->state == SDP_STATE_RX_FILE_DATA) { + if (sdp->state == SDP_STATE_RX_FILE_DATA_BUSY) { memcpy(sdp_ptr(sdp->dnl_address), req->buf + 1, datalen); sdp->dnl_address += datalen; } - if (sdp->dnl_bytes_remaining) + if (sdp->dnl_bytes_remaining) { + sdp->state = SDP_STATE_RX_FILE_DATA; return; + } #ifndef CONFIG_SPL_BUILD env_set_hex("filesize", sdp->dnl_bytes); @@ -384,7 +416,7 @@ static void sdp_rx_data_complete(struct usb_ep *ep, struct usb_request *req) printf("done\n"); switch (sdp->state) { - case SDP_STATE_RX_FILE_DATA: + case SDP_STATE_RX_FILE_DATA_BUSY: sdp->state = SDP_STATE_TX_SEC_CONF; break; case SDP_STATE_RX_DCD_DATA: @@ -465,10 +497,12 @@ static int sdp_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) case 1: value = SDP_COMMAND_LEN + 1; req->complete = sdp_rx_command_complete; + sdp_func->ep_int_enable = false; break; case 2: value = len; req->complete = sdp_rx_data_complete; + sdp_func->state = SDP_STATE_RX_FILE_DATA_BUSY; break; } } @@ -499,11 +533,17 @@ static int sdp_bind(struct usb_configuration *c, struct usb_function *f) return id; sdp_intf_runtime.bInterfaceNumber = id; - struct usb_ep *ep; + struct usb_ep *ep_in, *ep_out; /* allocate instance-specific endpoints */ - ep = usb_ep_autoconfig(gadget, &in_desc); - if (!ep) { + ep_in = usb_ep_autoconfig(gadget, &in_desc); + if (!ep_in) { + rv = -ENODEV; + goto error; + } + + ep_out = usb_ep_autoconfig(gadget, &out_desc); + if (!ep_out) { rv = -ENODEV; goto error; } @@ -511,9 +551,11 @@ static int sdp_bind(struct usb_configuration *c, struct usb_function *f) if (gadget_is_dualspeed(gadget)) { /* Assume endpoint addresses are the same for both speeds */ in_hs_desc.bEndpointAddress = in_desc.bEndpointAddress; + out_hs_desc.bEndpointAddress = out_desc.bEndpointAddress; } - sdp->in_ep = ep; /* Store IN EP for enabling @ setup */ + sdp->in_ep = ep_in; /* Store IN EP for enabling @ setup */ + sdp->out_ep = ep_out; cdev->req->context = sdp; @@ -546,18 +588,29 @@ static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length) } -static struct usb_request *sdp_start_ep(struct usb_ep *ep) +static struct usb_request *sdp_start_ep(struct usb_ep *ep, bool in) { struct usb_request *req; - req = alloc_ep_req(ep, 65); + if (in) + req = alloc_ep_req(ep, 65); + else + req = alloc_ep_req(ep, 2048); +/* + * OUT endpoint request length should be an integral multiple of + * maxpacket size 1024, else we break on certain controllers like + * DWC3 that expect bulk OUT requests to be divisible by maxpacket size. + */ debug("%s: ep:%p req:%p\n", __func__, ep, req); if (!req) return NULL; memset(req->buf, 0, req->length); - req->complete = sdp_tx_complete; + if (in) + req->complete = sdp_tx_complete; + else + req->complete = sdp_rx_command_complete; return req; } @@ -570,19 +623,27 @@ static int sdp_set_alt(struct usb_function *f, unsigned intf, unsigned alt) debug("%s: intf: %d alt: %d\n", __func__, intf, alt); - if (gadget_is_dualspeed(gadget) && gadget->speed == USB_SPEED_HIGH) + if (gadget_is_dualspeed(gadget) && gadget->speed == USB_SPEED_HIGH) { result = usb_ep_enable(sdp->in_ep, &in_hs_desc); - else + result |= usb_ep_enable(sdp->out_ep, &out_hs_desc); + } else { result = usb_ep_enable(sdp->in_ep, &in_desc); + result |= usb_ep_enable(sdp->out_ep, &out_desc); + } if (result) return result; - sdp->in_req = sdp_start_ep(sdp->in_ep); + + sdp->in_req = sdp_start_ep(sdp->in_ep, true); sdp->in_req->context = sdp; + sdp->out_req = sdp_start_ep(sdp->out_ep, false); + sdp->out_req->context = sdp; sdp->in_ep->driver_data = cdev; /* claim */ + sdp->out_ep->driver_data = cdev; /* claim */ sdp->altsetting = alt; sdp->state = SDP_STATE_IDLE; + sdp->ep_int_enable = true; return 0; } @@ -599,11 +660,18 @@ static void sdp_disable(struct usb_function *f) struct f_sdp *sdp = func_to_sdp(f); usb_ep_disable(sdp->in_ep); + usb_ep_disable(sdp->out_ep); if (sdp->in_req) { - free(sdp->in_req); + free(sdp->in_req->buf); + usb_ep_free_request(sdp->in_ep, sdp->in_req); sdp->in_req = NULL; } + if (sdp->out_req) { + free(sdp->out_req->buf); + usb_ep_free_request(sdp->out_ep, sdp->out_req); + sdp->out_req = NULL; + } } static int sdp_bind_config(struct usb_configuration *c) @@ -818,6 +886,27 @@ static int sdp_handle_in_ep(struct spl_image_info *spl_image) return 0; } +static void sdp_handle_out_ep(void) +{ + int rc; + + if (sdp_func->state == SDP_STATE_IDLE) { + sdp_func->out_req->complete = sdp_rx_command_complete; + rc = usb_ep_queue(sdp_func->out_ep, sdp_func->out_req, 0); + if (rc) + printf("error in submission: %s\n", + sdp_func->out_ep->name); + sdp_func->state = SDP_STATE_RX_CMD; + } else if (sdp_func->state == SDP_STATE_RX_FILE_DATA) { + sdp_func->out_req->complete = sdp_rx_data_complete; + rc = usb_ep_queue(sdp_func->out_ep, sdp_func->out_req, 0); + if (rc) + printf("error in submission: %s\n", + sdp_func->out_ep->name); + sdp_func->state = SDP_STATE_RX_FILE_DATA_BUSY; + } +} + #ifndef CONFIG_SPL_BUILD int sdp_handle(int controller_index) #else @@ -843,6 +932,8 @@ int spl_sdp_handle(int controller_index, struct spl_image_info *spl_image) #else flag = sdp_handle_in_ep(NULL); #endif + if (sdp_func->ep_int_enable) + sdp_handle_out_ep(); } } |