diff options
author | Paul Zimmerman <Paul.Zimmerman@synopsys.com> | 2012-04-16 23:19:06 +0200 |
---|---|---|
committer | Felipe Balbi <balbi@ti.com> | 2012-05-04 14:53:08 +0200 |
commit | b4036ccdd2ce5ec0c4f29b91312dd3cf19fc9152 (patch) | |
tree | b48719669536a489f842b1a8d55fd73a69055066 /drivers | |
parent | usb: gadget: add a sparse endian notation (diff) | |
download | linux-b4036ccdd2ce5ec0c4f29b91312dd3cf19fc9152.tar.xz linux-b4036ccdd2ce5ec0c4f29b91312dd3cf19fc9152.zip |
usb: gadget: add isochronous support to gadget zero
Add two isochronous endpoints to the gadget zero source/sink
function. They are enabled by selecting alternate interface 1, so
by default they are not enabled. Module parameters for setting all
the isoc endpoint characteristics are also provided.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/usb/gadget/f_loopback.c | 4 | ||||
-rw-r--r-- | drivers/usb/gadget/f_sourcesink.c | 424 | ||||
-rw-r--r-- | drivers/usb/gadget/g_zero.h | 5 | ||||
-rw-r--r-- | drivers/usb/gadget/zero.c | 19 |
4 files changed, 387 insertions, 65 deletions
diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c index 2c0cd824c667..7275706caeb0 100644 --- a/drivers/usb/gadget/f_loopback.c +++ b/drivers/usb/gadget/f_loopback.c @@ -286,7 +286,7 @@ static void disable_loopback(struct f_loopback *loop) struct usb_composite_dev *cdev; cdev = loop->function.config->cdev; - disable_endpoints(cdev, loop->in_ep, loop->out_ep); + disable_endpoints(cdev, loop->in_ep, loop->out_ep, NULL, NULL); VDBG(cdev, "%s disabled\n", loop->function.name); } @@ -329,7 +329,7 @@ fail0: * than 'buflen' bytes each. */ for (i = 0; i < qlen && result == 0; i++) { - req = alloc_ep_req(ep); + req = alloc_ep_req(ep, 0); if (req) { req->complete = loopback_complete; result = usb_ep_queue(ep, req, GFP_ATOMIC); diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c index 7aa7ac82c02c..5c1b68b63c98 100644 --- a/drivers/usb/gadget/f_sourcesink.c +++ b/drivers/usb/gadget/f_sourcesink.c @@ -51,6 +51,9 @@ struct f_sourcesink { struct usb_ep *in_ep; struct usb_ep *out_ep; + struct usb_ep *iso_in_ep; + struct usb_ep *iso_out_ep; + int cur_alt; }; static inline struct f_sourcesink *func_to_ss(struct usb_function *f) @@ -59,18 +62,45 @@ static inline struct f_sourcesink *func_to_ss(struct usb_function *f) } static unsigned pattern; -module_param(pattern, uint, 0); -MODULE_PARM_DESC(pattern, "0 = all zeroes, 1 = mod63 "); +module_param(pattern, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(pattern, "0 = all zeroes, 1 = mod63, 2 = none"); + +static unsigned isoc_interval = 4; +module_param(isoc_interval, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_interval, "1 - 16"); + +static unsigned isoc_maxpacket = 1024; +module_param(isoc_maxpacket, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_maxpacket, "0 - 1023 (fs), 0 - 1024 (hs/ss)"); + +static unsigned isoc_mult; +module_param(isoc_mult, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_mult, "0 - 2 (hs/ss only)"); + +static unsigned isoc_maxburst; +module_param(isoc_maxburst, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_maxburst, "0 - 15 (ss only)"); /*-------------------------------------------------------------------------*/ -static struct usb_interface_descriptor source_sink_intf = { - .bLength = sizeof source_sink_intf, +static struct usb_interface_descriptor source_sink_intf_alt0 = { + .bLength = USB_DT_INTERFACE_SIZE, .bDescriptorType = USB_DT_INTERFACE, + .bAlternateSetting = 0, .bNumEndpoints = 2, .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - /* .iInterface = DYNAMIC */ + /* .iInterface = DYNAMIC */ +}; + +static struct usb_interface_descriptor source_sink_intf_alt1 = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + + .bAlternateSetting = 1, + .bNumEndpoints = 4, + .bInterfaceClass = USB_CLASS_VENDOR_SPEC, + /* .iInterface = DYNAMIC */ }; /* full speed support: */ @@ -91,10 +121,36 @@ static struct usb_endpoint_descriptor fs_sink_desc = { .bmAttributes = USB_ENDPOINT_XFER_BULK, }; +static struct usb_endpoint_descriptor fs_iso_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1023), + .bInterval = 4, +}; + +static struct usb_endpoint_descriptor fs_iso_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1023), + .bInterval = 4, +}; + static struct usb_descriptor_header *fs_source_sink_descs[] = { - (struct usb_descriptor_header *) &source_sink_intf, + (struct usb_descriptor_header *) &source_sink_intf_alt0, (struct usb_descriptor_header *) &fs_sink_desc, (struct usb_descriptor_header *) &fs_source_desc, + (struct usb_descriptor_header *) &source_sink_intf_alt1, +#define FS_ALT_IFC_1_OFFSET 3 + (struct usb_descriptor_header *) &fs_sink_desc, + (struct usb_descriptor_header *) &fs_source_desc, + (struct usb_descriptor_header *) &fs_iso_sink_desc, + (struct usb_descriptor_header *) &fs_iso_source_desc, NULL, }; @@ -116,10 +172,34 @@ static struct usb_endpoint_descriptor hs_sink_desc = { .wMaxPacketSize = cpu_to_le16(512), }; +static struct usb_endpoint_descriptor hs_iso_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1024), + .bInterval = 4, +}; + +static struct usb_endpoint_descriptor hs_iso_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1024), + .bInterval = 4, +}; + static struct usb_descriptor_header *hs_source_sink_descs[] = { - (struct usb_descriptor_header *) &source_sink_intf, + (struct usb_descriptor_header *) &source_sink_intf_alt0, (struct usb_descriptor_header *) &hs_source_desc, (struct usb_descriptor_header *) &hs_sink_desc, + (struct usb_descriptor_header *) &source_sink_intf_alt1, +#define HS_ALT_IFC_1_OFFSET 3 + (struct usb_descriptor_header *) &hs_source_desc, + (struct usb_descriptor_header *) &hs_sink_desc, + (struct usb_descriptor_header *) &hs_iso_source_desc, + (struct usb_descriptor_header *) &hs_iso_sink_desc, NULL, }; @@ -136,6 +216,7 @@ static struct usb_endpoint_descriptor ss_source_desc = { struct usb_ss_ep_comp_descriptor ss_source_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 0, .bmAttributes = 0, .wBytesPerInterval = 0, @@ -152,17 +233,64 @@ static struct usb_endpoint_descriptor ss_sink_desc = { struct usb_ss_ep_comp_descriptor ss_sink_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 0, .bmAttributes = 0, .wBytesPerInterval = 0, }; +static struct usb_endpoint_descriptor ss_iso_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1024), + .bInterval = 4, +}; + +struct usb_ss_ep_comp_descriptor ss_iso_source_comp_desc = { + .bLength = USB_DT_SS_EP_COMP_SIZE, + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + + .bMaxBurst = 0, + .bmAttributes = 0, + .wBytesPerInterval = cpu_to_le16(1024), +}; + +static struct usb_endpoint_descriptor ss_iso_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(1024), + .bInterval = 4, +}; + +struct usb_ss_ep_comp_descriptor ss_iso_sink_comp_desc = { + .bLength = USB_DT_SS_EP_COMP_SIZE, + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + + .bMaxBurst = 0, + .bmAttributes = 0, + .wBytesPerInterval = cpu_to_le16(1024), +}; + static struct usb_descriptor_header *ss_source_sink_descs[] = { - (struct usb_descriptor_header *) &source_sink_intf, + (struct usb_descriptor_header *) &source_sink_intf_alt0, (struct usb_descriptor_header *) &ss_source_desc, (struct usb_descriptor_header *) &ss_source_comp_desc, (struct usb_descriptor_header *) &ss_sink_desc, (struct usb_descriptor_header *) &ss_sink_comp_desc, + (struct usb_descriptor_header *) &source_sink_intf_alt1, +#define SS_ALT_IFC_1_OFFSET 5 + (struct usb_descriptor_header *) &ss_source_desc, + (struct usb_descriptor_header *) &ss_source_comp_desc, + (struct usb_descriptor_header *) &ss_sink_desc, + (struct usb_descriptor_header *) &ss_sink_comp_desc, + (struct usb_descriptor_header *) &ss_iso_source_desc, + (struct usb_descriptor_header *) &ss_iso_source_comp_desc, + (struct usb_descriptor_header *) &ss_iso_sink_desc, + (struct usb_descriptor_header *) &ss_iso_sink_comp_desc, NULL, }; @@ -196,9 +324,10 @@ sourcesink_bind(struct usb_configuration *c, struct usb_function *f) id = usb_interface_id(c, f); if (id < 0) return id; - source_sink_intf.bInterfaceNumber = id; + source_sink_intf_alt0.bInterfaceNumber = id; + source_sink_intf_alt1.bInterfaceNumber = id; - /* allocate endpoints */ + /* allocate bulk endpoints */ ss->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_source_desc); if (!ss->in_ep) { autoconf_fail: @@ -213,12 +342,74 @@ autoconf_fail: goto autoconf_fail; ss->out_ep->driver_data = cdev; /* claim */ + /* sanity check the isoc module parameters */ + if (isoc_interval < 1) + isoc_interval = 1; + if (isoc_interval > 16) + isoc_interval = 16; + if (isoc_mult > 2) + isoc_mult = 2; + if (isoc_maxburst > 15) + isoc_maxburst = 15; + + /* fill in the FS isoc descriptors from the module parameters */ + fs_iso_source_desc.wMaxPacketSize = isoc_maxpacket > 1023 ? + 1023 : isoc_maxpacket; + fs_iso_source_desc.bInterval = isoc_interval; + fs_iso_sink_desc.wMaxPacketSize = isoc_maxpacket > 1023 ? + 1023 : isoc_maxpacket; + fs_iso_sink_desc.bInterval = isoc_interval; + + /* allocate iso endpoints */ + ss->iso_in_ep = usb_ep_autoconfig(cdev->gadget, &fs_iso_source_desc); + if (!ss->iso_in_ep) + goto no_iso; + ss->iso_in_ep->driver_data = cdev; /* claim */ + + ss->iso_out_ep = usb_ep_autoconfig(cdev->gadget, &fs_iso_sink_desc); + if (ss->iso_out_ep) { + ss->iso_out_ep->driver_data = cdev; /* claim */ + } else { + ss->iso_in_ep->driver_data = NULL; + ss->iso_in_ep = NULL; +no_iso: + /* + * We still want to work even if the UDC doesn't have isoc + * endpoints, so null out the alt interface that contains + * them and continue. + */ + fs_source_sink_descs[FS_ALT_IFC_1_OFFSET] = NULL; + hs_source_sink_descs[HS_ALT_IFC_1_OFFSET] = NULL; + ss_source_sink_descs[SS_ALT_IFC_1_OFFSET] = NULL; + } + + if (isoc_maxpacket > 1024) + isoc_maxpacket = 1024; + /* support high speed hardware */ if (gadget_is_dualspeed(c->cdev->gadget)) { hs_source_desc.bEndpointAddress = fs_source_desc.bEndpointAddress; hs_sink_desc.bEndpointAddress = fs_sink_desc.bEndpointAddress; + + /* + * Fill in the HS isoc descriptors from the module parameters. + * We assume that the user knows what they are doing and won't + * give parameters that their UDC doesn't support. + */ + hs_iso_source_desc.wMaxPacketSize = isoc_maxpacket; + hs_iso_source_desc.wMaxPacketSize |= isoc_mult << 11; + hs_iso_source_desc.bInterval = isoc_interval; + hs_iso_source_desc.bEndpointAddress = + fs_iso_source_desc.bEndpointAddress; + + hs_iso_sink_desc.wMaxPacketSize = isoc_maxpacket; + hs_iso_sink_desc.wMaxPacketSize |= isoc_mult << 11; + hs_iso_sink_desc.bInterval = isoc_interval; + hs_iso_sink_desc.bEndpointAddress = + fs_iso_sink_desc.bEndpointAddress; + f->hs_descriptors = hs_source_sink_descs; } @@ -228,13 +419,39 @@ autoconf_fail: fs_source_desc.bEndpointAddress; ss_sink_desc.bEndpointAddress = fs_sink_desc.bEndpointAddress; + + /* + * Fill in the SS isoc descriptors from the module parameters. + * We assume that the user knows what they are doing and won't + * give parameters that their UDC doesn't support. + */ + ss_iso_source_desc.wMaxPacketSize = isoc_maxpacket; + ss_iso_source_desc.bInterval = isoc_interval; + ss_iso_source_comp_desc.bmAttributes = isoc_mult; + ss_iso_source_comp_desc.bMaxBurst = isoc_maxburst; + ss_iso_source_comp_desc.wBytesPerInterval = + isoc_maxpacket * (isoc_mult + 1) * (isoc_maxburst + 1); + ss_iso_source_desc.bEndpointAddress = + fs_iso_source_desc.bEndpointAddress; + + ss_iso_sink_desc.wMaxPacketSize = isoc_maxpacket; + ss_iso_sink_desc.bInterval = isoc_interval; + ss_iso_sink_comp_desc.bmAttributes = isoc_mult; + ss_iso_sink_comp_desc.bMaxBurst = isoc_maxburst; + ss_iso_sink_comp_desc.wBytesPerInterval = + isoc_maxpacket * (isoc_mult + 1) * (isoc_maxburst + 1); + ss_iso_sink_desc.bEndpointAddress = + fs_iso_sink_desc.bEndpointAddress; + f->ss_descriptors = ss_source_sink_descs; } - DBG(cdev, "%s speed %s: IN/%s, OUT/%s\n", + DBG(cdev, "%s speed %s: IN/%s, OUT/%s, ISO-IN/%s, ISO-OUT/%s\n", (gadget_is_superspeed(c->cdev->gadget) ? "super" : (gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full")), - f->name, ss->in_ep->name, ss->out_ep->name); + f->name, ss->in_ep->name, ss->out_ep->name, + ss->iso_in_ep ? ss->iso_in_ep->name : "<none>", + ss->iso_out_ep ? ss->iso_out_ep->name : "<none>"); return 0; } @@ -251,6 +468,9 @@ static int check_read_data(struct f_sourcesink *ss, struct usb_request *req) u8 *buf = req->buf; struct usb_composite_dev *cdev = ss->function.config->cdev; + if (pattern == 2) + return 0; + for (i = 0; i < req->actual; i++, buf++) { switch (pattern) { @@ -265,7 +485,7 @@ static int check_read_data(struct f_sourcesink *ss, struct usb_request *req) * each usb transfer request should be. Resync is done * with set_interface or set_config. (We *WANT* it to * get quickly out of sync if controllers or their drivers - * stutter for any reason, including buffer duplcation...) + * stutter for any reason, including buffer duplication...) */ case 1: if (*buf == (u8)(i % 63)) @@ -292,21 +512,30 @@ static void reinit_write_data(struct usb_ep *ep, struct usb_request *req) for (i = 0; i < req->length; i++) *buf++ = (u8) (i % 63); break; + case 2: + break; } } static void source_sink_complete(struct usb_ep *ep, struct usb_request *req) { - struct f_sourcesink *ss = ep->driver_data; - struct usb_composite_dev *cdev = ss->function.config->cdev; - int status = req->status; + struct usb_composite_dev *cdev; + struct f_sourcesink *ss = ep->driver_data; + int status = req->status; + + /* driver_data will be null if ep has been disabled */ + if (!ss) + return; + + cdev = ss->function.config->cdev; switch (status) { case 0: /* normal completion? */ if (ep == ss->out_ep) { check_read_data(ss, req); - memset(req->buf, 0x55, req->length); + if (pattern != 2) + memset(req->buf, 0x55, req->length); } else reinit_write_data(ep, req); break; @@ -344,32 +573,57 @@ static void source_sink_complete(struct usb_ep *ep, struct usb_request *req) } } -static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in) +static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in, + bool is_iso, int speed) { struct usb_ep *ep; struct usb_request *req; - int status; + int i, size, status; + + for (i = 0; i < 8; i++) { + if (is_iso) { + switch (speed) { + case USB_SPEED_SUPER: + size = isoc_maxpacket * (isoc_mult + 1) * + (isoc_maxburst + 1); + break; + case USB_SPEED_HIGH: + size = isoc_maxpacket * (isoc_mult + 1); + break; + default: + size = isoc_maxpacket > 1023 ? + 1023 : isoc_maxpacket; + break; + } + ep = is_in ? ss->iso_in_ep : ss->iso_out_ep; + req = alloc_ep_req(ep, size); + } else { + ep = is_in ? ss->in_ep : ss->out_ep; + req = alloc_ep_req(ep, 0); + } - ep = is_in ? ss->in_ep : ss->out_ep; - req = alloc_ep_req(ep); - if (!req) - return -ENOMEM; + if (!req) + return -ENOMEM; - req->complete = source_sink_complete; - if (is_in) - reinit_write_data(ep, req); - else - memset(req->buf, 0x55, req->length); + req->complete = source_sink_complete; + if (is_in) + reinit_write_data(ep, req); + else if (pattern != 2) + memset(req->buf, 0x55, req->length); - status = usb_ep_queue(ep, req, GFP_ATOMIC); - if (status) { - struct usb_composite_dev *cdev; + status = usb_ep_queue(ep, req, GFP_ATOMIC); + if (status) { + struct usb_composite_dev *cdev; - cdev = ss->function.config->cdev; - ERROR(cdev, "start %s %s --> %d\n", - is_in ? "IN" : "OUT", - ep->name, status); - free_ep_req(ep, req); + cdev = ss->function.config->cdev; + ERROR(cdev, "start %s%s %s --> %d\n", + is_iso ? "ISO-" : "", is_in ? "IN" : "OUT", + ep->name, status); + free_ep_req(ep, req); + } + + if (!is_iso) + break; } return status; @@ -380,17 +634,20 @@ static void disable_source_sink(struct f_sourcesink *ss) struct usb_composite_dev *cdev; cdev = ss->function.config->cdev; - disable_endpoints(cdev, ss->in_ep, ss->out_ep); + disable_endpoints(cdev, ss->in_ep, ss->out_ep, ss->iso_in_ep, + ss->iso_out_ep); VDBG(cdev, "%s disabled\n", ss->function.name); } static int -enable_source_sink(struct usb_composite_dev *cdev, struct f_sourcesink *ss) +enable_source_sink(struct usb_composite_dev *cdev, struct f_sourcesink *ss, + int alt) { int result = 0; + int speed = cdev->gadget->speed; struct usb_ep *ep; - /* one endpoint writes (sources) zeroes IN (to the host) */ + /* one bulk endpoint writes (sources) zeroes IN (to the host) */ ep = ss->in_ep; result = config_ep_by_speed(cdev->gadget, &(ss->function), ep); if (result) @@ -400,7 +657,7 @@ enable_source_sink(struct usb_composite_dev *cdev, struct f_sourcesink *ss) return result; ep->driver_data = ss; - result = source_sink_start_ep(ss, true); + result = source_sink_start_ep(ss, true, false, speed); if (result < 0) { fail: ep = ss->in_ep; @@ -409,7 +666,7 @@ fail: return result; } - /* one endpoint reads (sinks) anything OUT (from the host) */ + /* one bulk endpoint reads (sinks) anything OUT (from the host) */ ep = ss->out_ep; result = config_ep_by_speed(cdev->gadget, &(ss->function), ep); if (result) @@ -419,27 +676,82 @@ fail: goto fail; ep->driver_data = ss; - result = source_sink_start_ep(ss, false); + result = source_sink_start_ep(ss, false, false, speed); if (result < 0) { +fail2: + ep = ss->out_ep; usb_ep_disable(ep); ep->driver_data = NULL; goto fail; } - DBG(cdev, "%s enabled\n", ss->function.name); + if (alt == 0) + goto out; + + /* one iso endpoint writes (sources) zeroes IN (to the host) */ + ep = ss->iso_in_ep; + if (ep) { + result = config_ep_by_speed(cdev->gadget, &(ss->function), ep); + if (result) + goto fail2; + result = usb_ep_enable(ep); + if (result < 0) + goto fail2; + ep->driver_data = ss; + + result = source_sink_start_ep(ss, true, true, speed); + if (result < 0) { +fail3: + ep = ss->iso_in_ep; + if (ep) { + usb_ep_disable(ep); + ep->driver_data = NULL; + } + goto fail2; + } + } + + /* one iso endpoint reads (sinks) anything OUT (from the host) */ + ep = ss->iso_out_ep; + if (ep) { + result = config_ep_by_speed(cdev->gadget, &(ss->function), ep); + if (result) + goto fail3; + result = usb_ep_enable(ep); + if (result < 0) + goto fail3; + ep->driver_data = ss; + + result = source_sink_start_ep(ss, false, true, speed); + if (result < 0) { + usb_ep_disable(ep); + ep->driver_data = NULL; + goto fail3; + } + } +out: + ss->cur_alt = alt; + + DBG(cdev, "%s enabled, alt intf %d\n", ss->function.name, alt); return result; } static int sourcesink_set_alt(struct usb_function *f, unsigned intf, unsigned alt) { - struct f_sourcesink *ss = func_to_ss(f); - struct usb_composite_dev *cdev = f->config->cdev; + struct f_sourcesink *ss = func_to_ss(f); + struct usb_composite_dev *cdev = f->config->cdev; - /* we know alt is zero */ if (ss->in_ep->driver_data) disable_source_sink(ss); - return enable_source_sink(cdev, ss); + return enable_source_sink(cdev, ss, alt); +} + +static int sourcesink_get_alt(struct usb_function *f, unsigned intf) +{ + struct f_sourcesink *ss = func_to_ss(f); + + return ss->cur_alt; } static void sourcesink_disable(struct usb_function *f) @@ -465,6 +777,7 @@ static int __init sourcesink_bind_config(struct usb_configuration *c) ss->function.bind = sourcesink_bind; ss->function.unbind = sourcesink_unbind; ss->function.set_alt = sourcesink_set_alt; + ss->function.get_alt = sourcesink_get_alt; ss->function.disable = sourcesink_disable; status = usb_add_function(c, &ss->function); @@ -536,7 +849,7 @@ unknown: req->length = value; value = usb_ep_queue(c->cdev->gadget->ep0, req, GFP_ATOMIC); if (value < 0) - ERROR(c->cdev, "source/sinkc response, err %d\n", + ERROR(c->cdev, "source/sink response, err %d\n", value); } @@ -545,12 +858,12 @@ unknown: } static struct usb_configuration sourcesink_driver = { - .label = "source/sink", - .strings = sourcesink_strings, - .setup = sourcesink_setup, - .bConfigurationValue = 3, - .bmAttributes = USB_CONFIG_ATT_SELFPOWER, - /* .iConfiguration = DYNAMIC */ + .label = "source/sink", + .strings = sourcesink_strings, + .setup = sourcesink_setup, + .bConfigurationValue = 3, + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + /* .iConfiguration = DYNAMIC */ }; /** @@ -567,7 +880,8 @@ int __init sourcesink_add(struct usb_composite_dev *cdev, bool autoresume) return id; strings_sourcesink[0].id = id; - source_sink_intf.iInterface = id; + source_sink_intf_alt0.iInterface = id; + source_sink_intf_alt1.iInterface = id; sourcesink_driver.iConfiguration = id; /* support autoresume for remote wakeup testing */ diff --git a/drivers/usb/gadget/g_zero.h b/drivers/usb/gadget/g_zero.h index e84b3c47ed3c..71ca193358b8 100644 --- a/drivers/usb/gadget/g_zero.h +++ b/drivers/usb/gadget/g_zero.h @@ -13,10 +13,11 @@ extern unsigned buflen; extern const struct usb_descriptor_header *otg_desc[]; /* common utilities */ -struct usb_request *alloc_ep_req(struct usb_ep *ep); +struct usb_request *alloc_ep_req(struct usb_ep *ep, int len); void free_ep_req(struct usb_ep *ep, struct usb_request *req); void disable_endpoints(struct usb_composite_dev *cdev, - struct usb_ep *in, struct usb_ep *out); + struct usb_ep *in, struct usb_ep *out, + struct usb_ep *iso_in, struct usb_ep *iso_out); /* configuration-specific linkup */ int sourcesink_add(struct usb_composite_dev *cdev, bool autoresume); diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index 31d34832907e..12ad516ada77 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -72,7 +72,7 @@ static const char longname[] = "Gadget Zero"; -unsigned buflen = 4096; +unsigned buflen = 4096; /* only used for bulk endpoints */ module_param(buflen, uint, 0); /* @@ -170,14 +170,17 @@ static struct usb_gadget_strings *dev_strings[] = { /*-------------------------------------------------------------------------*/ -struct usb_request *alloc_ep_req(struct usb_ep *ep) +struct usb_request *alloc_ep_req(struct usb_ep *ep, int len) { struct usb_request *req; req = usb_ep_alloc_request(ep, GFP_ATOMIC); if (req) { - req->length = buflen; - req->buf = kmalloc(buflen, GFP_ATOMIC); + if (len) + req->length = len; + else + req->length = buflen; + req->buf = kmalloc(req->length, GFP_ATOMIC); if (!req->buf) { usb_ep_free_request(ep, req); req = NULL; @@ -206,10 +209,15 @@ static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep) } void disable_endpoints(struct usb_composite_dev *cdev, - struct usb_ep *in, struct usb_ep *out) + struct usb_ep *in, struct usb_ep *out, + struct usb_ep *iso_in, struct usb_ep *iso_out) { disable_ep(cdev, in); disable_ep(cdev, out); + if (iso_in) + disable_ep(cdev, iso_in); + if (iso_out) + disable_ep(cdev, iso_out); } /*-------------------------------------------------------------------------*/ @@ -311,7 +319,6 @@ static int __init zero_bind(struct usb_composite_dev *cdev) device_desc.bcdDevice = cpu_to_le16(0x9999); } - INFO(cdev, "%s, version: " DRIVER_VERSION "\n", longname); snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", |