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-rw-r--r--drivers/usb/gadget/Kconfig2
-rw-r--r--drivers/usb/gadget/composite.c21
-rw-r--r--drivers/usb/gadget/config.c2
-rw-r--r--drivers/usb/gadget/configfs.c1
-rw-r--r--drivers/usb/gadget/function/f_fs.c222
-rw-r--r--drivers/usb/gadget/function/f_mass_storage.c22
-rw-r--r--drivers/usb/gadget/function/f_printer.c8
-rw-r--r--drivers/usb/gadget/function/f_tcm.c20
-rw-r--r--drivers/usb/gadget/function/f_uac2.c13
-rw-r--r--drivers/usb/gadget/function/storage_common.c4
-rw-r--r--drivers/usb/gadget/function/u_serial.c3
-rw-r--r--drivers/usb/gadget/function/uvc_queue.c2
-rw-r--r--drivers/usb/gadget/legacy/g_ffs.c15
-rw-r--r--drivers/usb/gadget/legacy/inode.c17
-rw-r--r--drivers/usb/gadget/udc/Kconfig4
-rw-r--r--drivers/usb/gadget/udc/Makefile5
-rw-r--r--drivers/usb/gadget/udc/amd5536udc.c9
-rw-r--r--drivers/usb/gadget/udc/atmel_usba_udc.c2
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_cmd.c3
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_ep.c6
-rw-r--r--drivers/usb/gadget/udc/core.c1523
-rw-r--r--drivers/usb/gadget/udc/dummy_hcd.c5
-rw-r--r--drivers/usb/gadget/udc/m66592-udc.c24
-rw-r--r--drivers/usb/gadget/udc/mv_u3d_core.c23
-rw-r--r--drivers/usb/gadget/udc/mv_udc_core.c9
-rw-r--r--drivers/usb/gadget/udc/net2272.c4
-rw-r--r--drivers/usb/gadget/udc/net2280.c51
-rw-r--r--drivers/usb/gadget/udc/net2280.h1
-rw-r--r--drivers/usb/gadget/udc/pch_udc.c36
-rw-r--r--drivers/usb/gadget/udc/pxa27x_udc.c9
-rw-r--r--drivers/usb/gadget/udc/r8a66597-udc.c24
-rw-r--r--drivers/usb/gadget/udc/trace.c18
-rw-r--r--drivers/usb/gadget/udc/trace.h298
-rw-r--r--drivers/usb/gadget/udc/udc-core.c796
-rw-r--r--drivers/usb/gadget/udc/udc-xilinx.c3
35 files changed, 2139 insertions, 1066 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 2057add439f0..3c3f31ceece7 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -114,7 +114,7 @@ config USB_GADGET_VBUS_DRAW
config USB_GADGET_STORAGE_NUM_BUFFERS
int "Number of storage pipeline buffers"
- range 2 32
+ range 2 256
default 2
help
Usually 2 buffers are enough to establish a good buffering
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index d67de0d22a2b..eb648485a58c 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1868,14 +1868,19 @@ unknown:
}
break;
}
- req->length = value;
- req->context = cdev;
- req->zero = value < w_length;
- value = composite_ep0_queue(cdev, req, GFP_ATOMIC);
- if (value < 0) {
- DBG(cdev, "ep_queue --> %d\n", value);
- req->status = 0;
- composite_setup_complete(gadget->ep0, req);
+
+ if (value >= 0) {
+ req->length = value;
+ req->context = cdev;
+ req->zero = value < w_length;
+ value = composite_ep0_queue(cdev, req,
+ GFP_ATOMIC);
+ if (value < 0) {
+ DBG(cdev, "ep_queue --> %d\n", value);
+ req->status = 0;
+ composite_setup_complete(gadget->ep0,
+ req);
+ }
}
return value;
}
diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c
index e6c0542a063b..17a6077b89a4 100644
--- a/drivers/usb/gadget/config.c
+++ b/drivers/usb/gadget/config.c
@@ -93,7 +93,7 @@ int usb_gadget_config_buf(
*cp = *config;
/* then interface/endpoint/class/vendor/... */
- len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8*)buf,
+ len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8 *)buf,
length - USB_DT_CONFIG_SIZE, desc);
if (len < 0)
return len;
diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index b6f60ca8a035..70cf3477f951 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -1401,6 +1401,7 @@ static const struct usb_gadget_driver configfs_driver_template = {
.owner = THIS_MODULE,
.name = "configfs-gadget",
},
+ .match_existing_only = 1,
};
static struct config_group *gadgets_make(
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 73515d54e1cc..5c8429f23a89 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -130,6 +130,12 @@ struct ffs_epfile {
struct dentry *dentry;
+ /*
+ * Buffer for holding data from partial reads which may happen since
+ * we’re rounding user read requests to a multiple of a max packet size.
+ */
+ struct ffs_buffer *read_buffer; /* P: epfile->mutex */
+
char name[5];
unsigned char in; /* P: ffs->eps_lock */
@@ -138,6 +144,12 @@ struct ffs_epfile {
unsigned char _pad;
};
+struct ffs_buffer {
+ size_t length;
+ char *data;
+ char storage[];
+};
+
/* ffs_io_data structure ***************************************************/
struct ffs_io_data {
@@ -640,6 +652,49 @@ static void ffs_epfile_io_complete(struct usb_ep *_ep, struct usb_request *req)
}
}
+static ssize_t ffs_copy_to_iter(void *data, int data_len, struct iov_iter *iter)
+{
+ ssize_t ret = copy_to_iter(data, data_len, iter);
+ if (likely(ret == data_len))
+ return ret;
+
+ if (unlikely(iov_iter_count(iter)))
+ return -EFAULT;
+
+ /*
+ * Dear user space developer!
+ *
+ * TL;DR: To stop getting below error message in your kernel log, change
+ * user space code using functionfs to align read buffers to a max
+ * packet size.
+ *
+ * Some UDCs (e.g. dwc3) require request sizes to be a multiple of a max
+ * packet size. When unaligned buffer is passed to functionfs, it
+ * internally uses a larger, aligned buffer so that such UDCs are happy.
+ *
+ * Unfortunately, this means that host may send more data than was
+ * requested in read(2) system call. f_fs doesn’t know what to do with
+ * that excess data so it simply drops it.
+ *
+ * Was the buffer aligned in the first place, no such problem would
+ * happen.
+ *
+ * Data may be dropped only in AIO reads. Synchronous reads are handled
+ * by splitting a request into multiple parts. This splitting may still
+ * be a problem though so it’s likely best to align the buffer
+ * regardless of it being AIO or not..
+ *
+ * This only affects OUT endpoints, i.e. reading data with a read(2),
+ * aio_read(2) etc. system calls. Writing data to an IN endpoint is not
+ * affected.
+ */
+ pr_err("functionfs read size %d > requested size %zd, dropping excess data. "
+ "Align read buffer size to max packet size to avoid the problem.\n",
+ data_len, ret);
+
+ return ret;
+}
+
static void ffs_user_copy_worker(struct work_struct *work)
{
struct ffs_io_data *io_data = container_of(work, struct ffs_io_data,
@@ -650,9 +705,7 @@ static void ffs_user_copy_worker(struct work_struct *work)
if (io_data->read && ret > 0) {
use_mm(io_data->mm);
- ret = copy_to_iter(io_data->buf, ret, &io_data->data);
- if (ret != io_data->req->actual && iov_iter_count(&io_data->data))
- ret = -EFAULT;
+ ret = ffs_copy_to_iter(io_data->buf, ret, &io_data->data);
unuse_mm(io_data->mm);
}
@@ -680,6 +733,58 @@ static void ffs_epfile_async_io_complete(struct usb_ep *_ep,
schedule_work(&io_data->work);
}
+/* Assumes epfile->mutex is held. */
+static ssize_t __ffs_epfile_read_buffered(struct ffs_epfile *epfile,
+ struct iov_iter *iter)
+{
+ struct ffs_buffer *buf = epfile->read_buffer;
+ ssize_t ret;
+ if (!buf)
+ return 0;
+
+ ret = copy_to_iter(buf->data, buf->length, iter);
+ if (buf->length == ret) {
+ kfree(buf);
+ epfile->read_buffer = NULL;
+ } else if (unlikely(iov_iter_count(iter))) {
+ ret = -EFAULT;
+ } else {
+ buf->length -= ret;
+ buf->data += ret;
+ }
+ return ret;
+}
+
+/* Assumes epfile->mutex is held. */
+static ssize_t __ffs_epfile_read_data(struct ffs_epfile *epfile,
+ void *data, int data_len,
+ struct iov_iter *iter)
+{
+ struct ffs_buffer *buf;
+
+ ssize_t ret = copy_to_iter(data, data_len, iter);
+ if (likely(data_len == ret))
+ return ret;
+
+ if (unlikely(iov_iter_count(iter)))
+ return -EFAULT;
+
+ /* See ffs_copy_to_iter for more context. */
+ pr_warn("functionfs read size %d > requested size %zd, splitting request into multiple reads.",
+ data_len, ret);
+
+ data_len -= ret;
+ buf = kmalloc(sizeof(*buf) + data_len, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ buf->length = data_len;
+ buf->data = buf->storage;
+ memcpy(buf->storage, data + ret, data_len);
+ epfile->read_buffer = buf;
+
+ return ret;
+}
+
static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
{
struct ffs_epfile *epfile = file->private_data;
@@ -709,21 +814,40 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
if (halt && epfile->isoc)
return -EINVAL;
+ /* We will be using request and read_buffer */
+ ret = ffs_mutex_lock(&epfile->mutex, file->f_flags & O_NONBLOCK);
+ if (unlikely(ret))
+ goto error;
+
/* Allocate & copy */
if (!halt) {
+ struct usb_gadget *gadget;
+
+ /*
+ * Do we have buffered data from previous partial read? Check
+ * that for synchronous case only because we do not have
+ * facility to ‘wake up’ a pending asynchronous read and push
+ * buffered data to it which we would need to make things behave
+ * consistently.
+ */
+ if (!io_data->aio && io_data->read) {
+ ret = __ffs_epfile_read_buffered(epfile, &io_data->data);
+ if (ret)
+ goto error_mutex;
+ }
+
/*
* if we _do_ wait above, the epfile->ffs->gadget might be NULL
* before the waiting completes, so do not assign to 'gadget'
* earlier
*/
- struct usb_gadget *gadget = epfile->ffs->gadget;
- size_t copied;
+ gadget = epfile->ffs->gadget;
spin_lock_irq(&epfile->ffs->eps_lock);
/* In the meantime, endpoint got disabled or changed. */
if (epfile->ep != ep) {
- spin_unlock_irq(&epfile->ffs->eps_lock);
- return -ESHUTDOWN;
+ ret = -ESHUTDOWN;
+ goto error_lock;
}
data_len = iov_iter_count(&io_data->data);
/*
@@ -735,22 +859,17 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
spin_unlock_irq(&epfile->ffs->eps_lock);
data = kmalloc(data_len, GFP_KERNEL);
- if (unlikely(!data))
- return -ENOMEM;
- if (!io_data->read) {
- copied = copy_from_iter(data, data_len, &io_data->data);
- if (copied != data_len) {
- ret = -EFAULT;
- goto error;
- }
+ if (unlikely(!data)) {
+ ret = -ENOMEM;
+ goto error_mutex;
+ }
+ if (!io_data->read &&
+ copy_from_iter(data, data_len, &io_data->data) != data_len) {
+ ret = -EFAULT;
+ goto error_mutex;
}
}
- /* We will be using request */
- ret = ffs_mutex_lock(&epfile->mutex, file->f_flags & O_NONBLOCK);
- if (unlikely(ret))
- goto error;
-
spin_lock_irq(&epfile->ffs->eps_lock);
if (epfile->ep != ep) {
@@ -803,18 +922,13 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
interrupted = ep->status < 0;
}
- /*
- * XXX We may end up silently droping data here. Since data_len
- * (i.e. req->length) may be bigger than len (after being
- * rounded up to maxpacketsize), we may end up with more data
- * then user space has space for.
- */
- ret = interrupted ? -EINTR : ep->status;
- if (io_data->read && ret > 0) {
- ret = copy_to_iter(data, ret, &io_data->data);
- if (!ret)
- ret = -EFAULT;
- }
+ if (interrupted)
+ ret = -EINTR;
+ else if (io_data->read && ep->status > 0)
+ ret = __ffs_epfile_read_data(epfile, data, ep->status,
+ &io_data->data);
+ else
+ ret = ep->status;
goto error_mutex;
} else if (!(req = usb_ep_alloc_request(ep->ep, GFP_KERNEL))) {
ret = -ENOMEM;
@@ -980,6 +1094,8 @@ ffs_epfile_release(struct inode *inode, struct file *file)
ENTER();
+ kfree(epfile->read_buffer);
+ epfile->read_buffer = NULL;
ffs_data_closed(epfile->ffs);
return 0;
@@ -1605,19 +1721,24 @@ static void ffs_func_eps_disable(struct ffs_function *func)
unsigned count = func->ffs->eps_count;
unsigned long flags;
- spin_lock_irqsave(&func->ffs->eps_lock, flags);
do {
+ if (epfile)
+ mutex_lock(&epfile->mutex);
+ spin_lock_irqsave(&func->ffs->eps_lock, flags);
/* pending requests get nuked */
if (likely(ep->ep))
usb_ep_disable(ep->ep);
++ep;
+ spin_unlock_irqrestore(&func->ffs->eps_lock, flags);
if (epfile) {
epfile->ep = NULL;
+ kfree(epfile->read_buffer);
+ epfile->read_buffer = NULL;
+ mutex_unlock(&epfile->mutex);
++epfile;
}
} while (--count);
- spin_unlock_irqrestore(&func->ffs->eps_lock, flags);
}
static int ffs_func_eps_enable(struct ffs_function *func)
@@ -2051,7 +2172,7 @@ static int __ffs_data_do_os_desc(enum ffs_os_desc_type type,
if (len < sizeof(*d) ||
d->bFirstInterfaceNumber >= ffs->interfaces_count ||
- d->Reserved1)
+ !d->Reserved1)
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(d->Reserved2); ++i)
if (d->Reserved2[i])
@@ -2227,8 +2348,8 @@ static int __ffs_data_got_strings(struct ffs_data *ffs,
{
u32 str_count, needed_count, lang_count;
struct usb_gadget_strings **stringtabs, *t;
- struct usb_string *strings, *s;
const char *data = _data;
+ struct usb_string *s;
ENTER();
@@ -2286,7 +2407,6 @@ static int __ffs_data_got_strings(struct ffs_data *ffs,
stringtabs = vla_ptr(vlabuf, d, stringtabs);
t = vla_ptr(vlabuf, d, stringtab);
s = vla_ptr(vlabuf, d, strings);
- strings = s;
}
/* For each language */
@@ -2729,6 +2849,7 @@ static int _ffs_func_bind(struct usb_configuration *c,
func->ffs->ss_descs_count;
int fs_len, hs_len, ss_len, ret, i;
+ struct ffs_ep *eps_ptr;
/* Make it a single chunk, less management later on */
vla_group(d);
@@ -2777,12 +2898,9 @@ static int _ffs_func_bind(struct usb_configuration *c,
ffs->raw_descs_length);
memset(vla_ptr(vlabuf, d, inums), 0xff, d_inums__sz);
- for (ret = ffs->eps_count; ret; --ret) {
- struct ffs_ep *ptr;
-
- ptr = vla_ptr(vlabuf, d, eps);
- ptr[ret].num = -1;
- }
+ eps_ptr = vla_ptr(vlabuf, d, eps);
+ for (i = 0; i < ffs->eps_count; i++)
+ eps_ptr[i].num = -1;
/* Save pointers
* d_eps == vlabuf, func->eps used to kfree vlabuf later
@@ -2851,7 +2969,7 @@ static int _ffs_func_bind(struct usb_configuration *c,
goto error;
func->function.os_desc_table = vla_ptr(vlabuf, d, os_desc_table);
- if (c->cdev->use_os_string)
+ if (c->cdev->use_os_string) {
for (i = 0; i < ffs->interfaces_count; ++i) {
struct usb_os_desc *desc;
@@ -2862,13 +2980,15 @@ static int _ffs_func_bind(struct usb_configuration *c,
vla_ptr(vlabuf, d, ext_compat) + i * 16;
INIT_LIST_HEAD(&desc->ext_prop);
}
- ret = ffs_do_os_descs(ffs->ms_os_descs_count,
- vla_ptr(vlabuf, d, raw_descs) +
- fs_len + hs_len + ss_len,
- d_raw_descs__sz - fs_len - hs_len - ss_len,
- __ffs_func_bind_do_os_desc, func);
- if (unlikely(ret < 0))
- goto error;
+ ret = ffs_do_os_descs(ffs->ms_os_descs_count,
+ vla_ptr(vlabuf, d, raw_descs) +
+ fs_len + hs_len + ss_len,
+ d_raw_descs__sz - fs_len - hs_len -
+ ss_len,
+ __ffs_func_bind_do_os_desc, func);
+ if (unlikely(ret < 0))
+ goto error;
+ }
func->function.os_desc_n =
c->cdev->use_os_string ? ffs->interfaces_count : 0;
diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
index 5c6d4d7ca605..2505117e88e8 100644
--- a/drivers/usb/gadget/function/f_mass_storage.c
+++ b/drivers/usb/gadget/function/f_mass_storage.c
@@ -2655,18 +2655,6 @@ void fsg_common_put(struct fsg_common *common)
}
EXPORT_SYMBOL_GPL(fsg_common_put);
-/* check if fsg_num_buffers is within a valid range */
-static inline int fsg_num_buffers_validate(unsigned int fsg_num_buffers)
-{
-#define FSG_MAX_NUM_BUFFERS 32
-
- if (fsg_num_buffers >= 2 && fsg_num_buffers <= FSG_MAX_NUM_BUFFERS)
- return 0;
- pr_err("fsg_num_buffers %u is out of range (%d to %d)\n",
- fsg_num_buffers, 2, FSG_MAX_NUM_BUFFERS);
- return -EINVAL;
-}
-
static struct fsg_common *fsg_common_setup(struct fsg_common *common)
{
if (!common) {
@@ -2709,11 +2697,7 @@ static void _fsg_common_free_buffers(struct fsg_buffhd *buffhds, unsigned n)
int fsg_common_set_num_buffers(struct fsg_common *common, unsigned int n)
{
struct fsg_buffhd *bh, *buffhds;
- int i, rc;
-
- rc = fsg_num_buffers_validate(n);
- if (rc != 0)
- return rc;
+ int i;
buffhds = kcalloc(n, sizeof(*buffhds), GFP_KERNEL);
if (!buffhds)
@@ -3401,10 +3385,6 @@ static ssize_t fsg_opts_num_buffers_store(struct config_item *item,
if (ret)
goto end;
- ret = fsg_num_buffers_validate(num);
- if (ret)
- goto end;
-
fsg_common_set_num_buffers(opts->common, num);
ret = len;
diff --git a/drivers/usb/gadget/function/f_printer.c b/drivers/usb/gadget/function/f_printer.c
index c45104e3a64b..64706a789580 100644
--- a/drivers/usb/gadget/function/f_printer.c
+++ b/drivers/usb/gadget/function/f_printer.c
@@ -161,14 +161,6 @@ static struct usb_endpoint_descriptor hs_ep_out_desc = {
.wMaxPacketSize = cpu_to_le16(512)
};
-static struct usb_qualifier_descriptor dev_qualifier = {
- .bLength = sizeof(dev_qualifier),
- .bDescriptorType = USB_DT_DEVICE_QUALIFIER,
- .bcdUSB = cpu_to_le16(0x0200),
- .bDeviceClass = USB_CLASS_PRINTER,
- .bNumConfigurations = 1
-};
-
static struct usb_descriptor_header *hs_printer_function[] = {
(struct usb_descriptor_header *) &intf_desc,
(struct usb_descriptor_header *) &hs_ep_in_desc,
diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c
index 35fe3c80cfc0..197f73386fac 100644
--- a/drivers/usb/gadget/function/f_tcm.c
+++ b/drivers/usb/gadget/function/f_tcm.c
@@ -1445,16 +1445,18 @@ static void usbg_drop_tpg(struct se_portal_group *se_tpg)
for (i = 0; i < TPG_INSTANCES; ++i)
if (tpg_instances[i].tpg == tpg)
break;
- if (i < TPG_INSTANCES)
+ if (i < TPG_INSTANCES) {
tpg_instances[i].tpg = NULL;
- opts = container_of(tpg_instances[i].func_inst,
- struct f_tcm_opts, func_inst);
- mutex_lock(&opts->dep_lock);
- if (opts->has_dep)
- module_put(opts->dependent);
- else
- configfs_undepend_item_unlocked(&opts->func_inst.group.cg_item);
- mutex_unlock(&opts->dep_lock);
+ opts = container_of(tpg_instances[i].func_inst,
+ struct f_tcm_opts, func_inst);
+ mutex_lock(&opts->dep_lock);
+ if (opts->has_dep)
+ module_put(opts->dependent);
+ else
+ configfs_undepend_item_unlocked(
+ &opts->func_inst.group.cg_item);
+ mutex_unlock(&opts->dep_lock);
+ }
mutex_unlock(&tpg_instances_lock);
kfree(tpg);
diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c
index 186d4b162524..cd214ec8a601 100644
--- a/drivers/usb/gadget/function/f_uac2.c
+++ b/drivers/usb/gadget/function/f_uac2.c
@@ -598,18 +598,6 @@ static struct usb_gadget_strings *fn_strings[] = {
NULL,
};
-static struct usb_qualifier_descriptor devqual_desc = {
- .bLength = sizeof devqual_desc,
- .bDescriptorType = USB_DT_DEVICE_QUALIFIER,
-
- .bcdUSB = cpu_to_le16(0x200),
- .bDeviceClass = USB_CLASS_MISC,
- .bDeviceSubClass = 0x02,
- .bDeviceProtocol = 0x01,
- .bNumConfigurations = 1,
- .bRESERVED = 0,
-};
-
static struct usb_interface_assoc_descriptor iad_desc = {
.bLength = sizeof iad_desc,
.bDescriptorType = USB_DT_INTERFACE_ASSOCIATION,
@@ -1292,6 +1280,7 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {
struct cntrl_cur_lay3 c;
+ memset(&c, 0, sizeof(struct cntrl_cur_lay3));
if (entity_id == USB_IN_CLK_ID)
c.dCUR = p_srate;
diff --git a/drivers/usb/gadget/function/storage_common.c b/drivers/usb/gadget/function/storage_common.c
index d62683017cf3..990df221c629 100644
--- a/drivers/usb/gadget/function/storage_common.c
+++ b/drivers/usb/gadget/function/storage_common.c
@@ -83,9 +83,7 @@ EXPORT_SYMBOL_GPL(fsg_fs_function);
* USB 2.0 devices need to expose both high speed and full speed
* descriptors, unless they only run at full speed.
*
- * That means alternate endpoint descriptors (bigger packets)
- * and a "device qualifier" ... plus more construction options
- * for the configuration descriptor.
+ * That means alternate endpoint descriptors (bigger packets).
*/
struct usb_endpoint_descriptor fsg_hs_bulk_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c
index 3580f198df8b..6ded6345cd09 100644
--- a/drivers/usb/gadget/function/u_serial.c
+++ b/drivers/usb/gadget/function/u_serial.c
@@ -907,7 +907,6 @@ static int gs_write(struct tty_struct *tty, const unsigned char *buf, int count)
{
struct gs_port *port = tty->driver_data;
unsigned long flags;
- int status;
pr_vdebug("gs_write: ttyGS%d (%p) writing %d bytes\n",
port->port_num, tty, count);
@@ -917,7 +916,7 @@ static int gs_write(struct tty_struct *tty, const unsigned char *buf, int count)
count = gs_buf_put(&port->port_write_buf, buf, count);
/* treat count == 0 as flush_chars() */
if (port->port_usb)
- status = gs_start_tx(port);
+ gs_start_tx(port);
spin_unlock_irqrestore(&port->port_lock, flags);
return count;
diff --git a/drivers/usb/gadget/function/uvc_queue.c b/drivers/usb/gadget/function/uvc_queue.c
index 912694f3d54e..6377e9fee6e5 100644
--- a/drivers/usb/gadget/function/uvc_queue.c
+++ b/drivers/usb/gadget/function/uvc_queue.c
@@ -43,7 +43,7 @@
static int uvc_queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
- unsigned int sizes[], void *alloc_ctxs[])
+ unsigned int sizes[], struct device *alloc_devs[])
{
struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
struct uvc_video *video = container_of(queue, struct uvc_video, queue);
diff --git a/drivers/usb/gadget/legacy/g_ffs.c b/drivers/usb/gadget/legacy/g_ffs.c
index f85639ef8a8f..6da7316f8e87 100644
--- a/drivers/usb/gadget/legacy/g_ffs.c
+++ b/drivers/usb/gadget/legacy/g_ffs.c
@@ -265,7 +265,7 @@ static void *functionfs_acquire_dev(struct ffs_dev *dev)
{
if (!try_module_get(THIS_MODULE))
return ERR_PTR(-ENOENT);
-
+
return NULL;
}
@@ -275,7 +275,7 @@ static void functionfs_release_dev(struct ffs_dev *dev)
}
/*
- * The caller of this function takes ffs_lock
+ * The caller of this function takes ffs_lock
*/
static int functionfs_ready_callback(struct ffs_data *ffs)
{
@@ -294,12 +294,12 @@ static int functionfs_ready_callback(struct ffs_data *ffs)
++missing_funcs;
gfs_registered = false;
}
-
+
return ret;
}
/*
- * The caller of this function takes ffs_lock
+ * The caller of this function takes ffs_lock
*/
static void functionfs_closed_callback(struct ffs_data *ffs)
{
@@ -347,17 +347,14 @@ static int gfs_bind(struct usb_composite_dev *cdev)
#ifdef CONFIG_USB_FUNCTIONFS_RNDIS
{
- struct f_rndis_opts *rndis_opts;
-
fi_rndis = usb_get_function_instance("rndis");
if (IS_ERR(fi_rndis)) {
ret = PTR_ERR(fi_rndis);
goto error;
}
- rndis_opts = container_of(fi_rndis, struct f_rndis_opts,
- func_inst);
#ifndef CONFIG_USB_FUNCTIONFS_ETH
- net = rndis_opts->net;
+ net = container_of(fi_rndis, struct f_rndis_opts,
+ func_inst)->net;
#endif
}
#endif
diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index e64479f882a5..aa3707bdebb4 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -938,8 +938,11 @@ ep0_read (struct file *fd, char __user *buf, size_t len, loff_t *ptr)
struct usb_ep *ep = dev->gadget->ep0;
struct usb_request *req = dev->req;
- if ((retval = setup_req (ep, req, 0)) == 0)
- retval = usb_ep_queue (ep, req, GFP_ATOMIC);
+ if ((retval = setup_req (ep, req, 0)) == 0) {
+ spin_unlock_irq (&dev->lock);
+ retval = usb_ep_queue (ep, req, GFP_KERNEL);
+ spin_lock_irq (&dev->lock);
+ }
dev->state = STATE_DEV_CONNECTED;
/* assume that was SET_CONFIGURATION */
@@ -1457,8 +1460,11 @@ delegate:
w_length);
if (value < 0)
break;
+
+ spin_unlock (&dev->lock);
value = usb_ep_queue (gadget->ep0, dev->req,
- GFP_ATOMIC);
+ GFP_KERNEL);
+ spin_lock (&dev->lock);
if (value < 0) {
clean_req (gadget->ep0, dev->req);
break;
@@ -1481,11 +1487,14 @@ delegate:
if (value >= 0 && dev->state != STATE_DEV_SETUP) {
req->length = value;
req->zero = value < w_length;
- value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
+
+ spin_unlock (&dev->lock);
+ value = usb_ep_queue (gadget->ep0, req, GFP_KERNEL);
if (value < 0) {
DBG (dev, "ep_queue --> %d\n", value);
req->status = 0;
}
+ return value;
}
/* device stalls when value < 0 */
diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig
index 7c289416f87d..658b8da60915 100644
--- a/drivers/usb/gadget/udc/Kconfig
+++ b/drivers/usb/gadget/udc/Kconfig
@@ -312,7 +312,7 @@ config USB_NET2272_DMA
If unsure, say "N" here. The driver works fine in PIO mode.
config USB_NET2280
- tristate "NetChip 228x / PLX USB338x"
+ tristate "NetChip NET228x / PLX USB3x8x"
depends on PCI
help
NetChip 2280 / 2282 is a PCI based USB peripheral controller which
@@ -322,6 +322,8 @@ config USB_NET2280
(for control transfers) and several endpoints with dedicated
functions.
+ PLX 2380 is a PCIe version of the PLX 2380.
+
PLX 3380 / 3382 is a PCIe based USB peripheral controller which
supports full, high speed USB 2.0 and super speed USB 3.0
data transfers.
diff --git a/drivers/usb/gadget/udc/Makefile b/drivers/usb/gadget/udc/Makefile
index dfee53446319..98e74ed9f555 100644
--- a/drivers/usb/gadget/udc/Makefile
+++ b/drivers/usb/gadget/udc/Makefile
@@ -1,3 +1,8 @@
+# define_trace.h needs to know how to find our header
+CFLAGS_trace.o := -I$(src)
+
+udc-core-y := core.o trace.o
+
#
# USB peripheral controller drivers
#
diff --git a/drivers/usb/gadget/udc/amd5536udc.c b/drivers/usb/gadget/udc/amd5536udc.c
index 39d70b4a8958..ea03ca7ae29a 100644
--- a/drivers/usb/gadget/udc/amd5536udc.c
+++ b/drivers/usb/gadget/udc/amd5536udc.c
@@ -2340,7 +2340,6 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix)
struct udc_ep *ep;
struct udc_request *req;
struct udc_data_dma *td;
- unsigned dma_done;
unsigned len;
ep = &dev->ep[ep_ix];
@@ -2385,13 +2384,8 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix)
*/
if (use_dma_ppb_du) {
td = udc_get_last_dma_desc(req);
- if (td) {
- dma_done =
- AMD_GETBITS(td->status,
- UDC_DMA_IN_STS_BS);
- /* don't care DMA done */
+ if (td)
req->req.actual = req->req.length;
- }
} else {
/* assume all bytes transferred */
req->req.actual = req->req.length;
@@ -3417,4 +3411,3 @@ module_pci_driver(udc_pci_driver);
MODULE_DESCRIPTION(UDC_MOD_DESCRIPTION);
MODULE_AUTHOR("Thomas Dahlmann");
MODULE_LICENSE("GPL");
-
diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
index 18569de06b04..bb1f6c8f0f01 100644
--- a/drivers/usb/gadget/udc/atmel_usba_udc.c
+++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
@@ -1920,6 +1920,8 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev,
udc->errata = match->data;
udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9g45-pmc");
+ if (IS_ERR(udc->pmc))
+ udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9x5-pmc");
if (udc->errata && IS_ERR(udc->pmc))
return ERR_CAST(udc->pmc);
diff --git a/drivers/usb/gadget/udc/bdc/bdc_cmd.c b/drivers/usb/gadget/udc/bdc/bdc_cmd.c
index 6a4155c4bd86..4d5e9188beae 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_cmd.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_cmd.c
@@ -57,7 +57,6 @@ static int bdc_submit_cmd(struct bdc *bdc, u32 cmd_sc,
u32 param0, u32 param1, u32 param2)
{
u32 temp, cmd_status;
- int reset_bdc = 0;
int ret;
temp = bdc_readl(bdc->regs, BDC_CMDSC);
@@ -94,7 +93,6 @@ static int bdc_submit_cmd(struct bdc *bdc, u32 cmd_sc,
case BDC_CMDS_INTL:
dev_err(bdc->dev, "BDC Internal error\n");
- reset_bdc = 1;
ret = -ECONNRESET;
break;
@@ -102,7 +100,6 @@ static int bdc_submit_cmd(struct bdc *bdc, u32 cmd_sc,
dev_err(bdc->dev,
"command timedout waited for %dusec\n",
BDC_CMD_TIMEOUT);
- reset_bdc = 1;
ret = -ECONNRESET;
break;
default:
diff --git a/drivers/usb/gadget/udc/bdc/bdc_ep.c b/drivers/usb/gadget/udc/bdc/bdc_ep.c
index d6199507f861..ccaa74ab6c0e 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_ep.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_ep.c
@@ -81,7 +81,7 @@ static void ep_bd_list_free(struct bdc_ep *ep, u32 num_tabs)
continue;
}
if (!bd_table->start_bd) {
- dev_dbg(bdc->dev, "bd dma pool not allocted\n");
+ dev_dbg(bdc->dev, "bd dma pool not allocated\n");
continue;
}
@@ -702,11 +702,9 @@ static int ep0_queue(struct bdc_ep *ep, struct bdc_req *req)
/* Queue data stage */
static int ep0_queue_data_stage(struct bdc *bdc)
{
- struct usb_request *ep0_usb_req;
struct bdc_ep *ep;
dev_dbg(bdc->dev, "%s\n", __func__);
- ep0_usb_req = &bdc->ep0_req.usb_req;
ep = bdc->bdc_ep_array[1];
bdc->ep0_req.ep = ep;
bdc->ep0_req.usb_req.complete = NULL;
@@ -1393,10 +1391,8 @@ static int ep0_set_sel(struct bdc *bdc,
{
struct bdc_ep *ep;
u16 wLength;
- u16 wValue;
dev_dbg(bdc->dev, "%s\n", __func__);
- wValue = le16_to_cpu(setup_pkt->wValue);
wLength = le16_to_cpu(setup_pkt->wLength);
if (unlikely(wLength != 6)) {
dev_err(bdc->dev, "%s Wrong wLength:%d\n", __func__, wLength);
diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c
new file mode 100644
index 000000000000..ff8685ea7219
--- /dev/null
+++ b/drivers/usb/gadget/udc/core.c
@@ -0,0 +1,1523 @@
+/**
+ * udc.c - Core UDC Framework
+ *
+ * Copyright (C) 2010 Texas Instruments
+ * Author: Felipe Balbi <balbi@ti.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 of
+ * the License as published by the Free Software Foundation.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/err.h>
+#include <linux/dma-mapping.h>
+#include <linux/workqueue.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb.h>
+
+#include "trace.h"
+
+/**
+ * struct usb_udc - describes one usb device controller
+ * @driver - the gadget driver pointer. For use by the class code
+ * @dev - the child device to the actual controller
+ * @gadget - the gadget. For use by the class code
+ * @list - for use by the udc class driver
+ * @vbus - for udcs who care about vbus status, this value is real vbus status;
+ * for udcs who do not care about vbus status, this value is always true
+ *
+ * This represents the internal data structure which is used by the UDC-class
+ * to hold information about udc driver and gadget together.
+ */
+struct usb_udc {
+ struct usb_gadget_driver *driver;
+ struct usb_gadget *gadget;
+ struct device dev;
+ struct list_head list;
+ bool vbus;
+};
+
+static struct class *udc_class;
+static LIST_HEAD(udc_list);
+static LIST_HEAD(gadget_driver_pending_list);
+static DEFINE_MUTEX(udc_lock);
+
+static int udc_bind_to_driver(struct usb_udc *udc,
+ struct usb_gadget_driver *driver);
+
+/* ------------------------------------------------------------------------- */
+
+/**
+ * usb_ep_set_maxpacket_limit - set maximum packet size limit for endpoint
+ * @ep:the endpoint being configured
+ * @maxpacket_limit:value of maximum packet size limit
+ *
+ * This function should be used only in UDC drivers to initialize endpoint
+ * (usually in probe function).
+ */
+void usb_ep_set_maxpacket_limit(struct usb_ep *ep,
+ unsigned maxpacket_limit)
+{
+ ep->maxpacket_limit = maxpacket_limit;
+ ep->maxpacket = maxpacket_limit;
+
+ trace_usb_ep_set_maxpacket_limit(ep, 0);
+}
+EXPORT_SYMBOL_GPL(usb_ep_set_maxpacket_limit);
+
+/**
+ * usb_ep_enable - configure endpoint, making it usable
+ * @ep:the endpoint being configured. may not be the endpoint named "ep0".
+ * drivers discover endpoints through the ep_list of a usb_gadget.
+ *
+ * When configurations are set, or when interface settings change, the driver
+ * will enable or disable the relevant endpoints. while it is enabled, an
+ * endpoint may be used for i/o until the driver receives a disconnect() from
+ * the host or until the endpoint is disabled.
+ *
+ * the ep0 implementation (which calls this routine) must ensure that the
+ * hardware capabilities of each endpoint match the descriptor provided
+ * for it. for example, an endpoint named "ep2in-bulk" would be usable
+ * for interrupt transfers as well as bulk, but it likely couldn't be used
+ * for iso transfers or for endpoint 14. some endpoints are fully
+ * configurable, with more generic names like "ep-a". (remember that for
+ * USB, "in" means "towards the USB master".)
+ *
+ * returns zero, or a negative error code.
+ */
+int usb_ep_enable(struct usb_ep *ep)
+{
+ int ret = 0;
+
+ if (ep->enabled)
+ goto out;
+
+ ret = ep->ops->enable(ep, ep->desc);
+ if (ret) {
+ ret = ret;
+ goto out;
+ }
+
+ ep->enabled = true;
+
+out:
+ trace_usb_ep_enable(ep, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_ep_enable);
+
+/**
+ * usb_ep_disable - endpoint is no longer usable
+ * @ep:the endpoint being unconfigured. may not be the endpoint named "ep0".
+ *
+ * no other task may be using this endpoint when this is called.
+ * any pending and uncompleted requests will complete with status
+ * indicating disconnect (-ESHUTDOWN) before this call returns.
+ * gadget drivers must call usb_ep_enable() again before queueing
+ * requests to the endpoint.
+ *
+ * returns zero, or a negative error code.
+ */
+int usb_ep_disable(struct usb_ep *ep)
+{
+ int ret = 0;
+
+ if (!ep->enabled)
+ goto out;
+
+ ret = ep->ops->disable(ep);
+ if (ret) {
+ ret = ret;
+ goto out;
+ }
+
+ ep->enabled = false;
+
+out:
+ trace_usb_ep_disable(ep, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_ep_disable);
+
+/**
+ * usb_ep_alloc_request - allocate a request object to use with this endpoint
+ * @ep:the endpoint to be used with with the request
+ * @gfp_flags:GFP_* flags to use
+ *
+ * Request objects must be allocated with this call, since they normally
+ * need controller-specific setup and may even need endpoint-specific
+ * resources such as allocation of DMA descriptors.
+ * Requests may be submitted with usb_ep_queue(), and receive a single
+ * completion callback. Free requests with usb_ep_free_request(), when
+ * they are no longer needed.
+ *
+ * Returns the request, or null if one could not be allocated.
+ */
+struct usb_request *usb_ep_alloc_request(struct usb_ep *ep,
+ gfp_t gfp_flags)
+{
+ struct usb_request *req = NULL;
+
+ req = ep->ops->alloc_request(ep, gfp_flags);
+
+ trace_usb_ep_alloc_request(ep, req, req ? 0 : -ENOMEM);
+
+ return req;
+}
+EXPORT_SYMBOL_GPL(usb_ep_alloc_request);
+
+/**
+ * usb_ep_free_request - frees a request object
+ * @ep:the endpoint associated with the request
+ * @req:the request being freed
+ *
+ * Reverses the effect of usb_ep_alloc_request().
+ * Caller guarantees the request is not queued, and that it will
+ * no longer be requeued (or otherwise used).
+ */
+void usb_ep_free_request(struct usb_ep *ep,
+ struct usb_request *req)
+{
+ ep->ops->free_request(ep, req);
+ trace_usb_ep_free_request(ep, req, 0);
+}
+EXPORT_SYMBOL_GPL(usb_ep_free_request);
+
+/**
+ * usb_ep_queue - queues (submits) an I/O request to an endpoint.
+ * @ep:the endpoint associated with the request
+ * @req:the request being submitted
+ * @gfp_flags: GFP_* flags to use in case the lower level driver couldn't
+ * pre-allocate all necessary memory with the request.
+ *
+ * This tells the device controller to perform the specified request through
+ * that endpoint (reading or writing a buffer). When the request completes,
+ * including being canceled by usb_ep_dequeue(), the request's completion
+ * routine is called to return the request to the driver. Any endpoint
+ * (except control endpoints like ep0) may have more than one transfer
+ * request queued; they complete in FIFO order. Once a gadget driver
+ * submits a request, that request may not be examined or modified until it
+ * is given back to that driver through the completion callback.
+ *
+ * Each request is turned into one or more packets. The controller driver
+ * never merges adjacent requests into the same packet. OUT transfers
+ * will sometimes use data that's already buffered in the hardware.
+ * Drivers can rely on the fact that the first byte of the request's buffer
+ * always corresponds to the first byte of some USB packet, for both
+ * IN and OUT transfers.
+ *
+ * Bulk endpoints can queue any amount of data; the transfer is packetized
+ * automatically. The last packet will be short if the request doesn't fill it
+ * out completely. Zero length packets (ZLPs) should be avoided in portable
+ * protocols since not all usb hardware can successfully handle zero length
+ * packets. (ZLPs may be explicitly written, and may be implicitly written if
+ * the request 'zero' flag is set.) Bulk endpoints may also be used
+ * for interrupt transfers; but the reverse is not true, and some endpoints
+ * won't support every interrupt transfer. (Such as 768 byte packets.)
+ *
+ * Interrupt-only endpoints are less functional than bulk endpoints, for
+ * example by not supporting queueing or not handling buffers that are
+ * larger than the endpoint's maxpacket size. They may also treat data
+ * toggle differently.
+ *
+ * Control endpoints ... after getting a setup() callback, the driver queues
+ * one response (even if it would be zero length). That enables the
+ * status ack, after transferring data as specified in the response. Setup
+ * functions may return negative error codes to generate protocol stalls.
+ * (Note that some USB device controllers disallow protocol stall responses
+ * in some cases.) When control responses are deferred (the response is
+ * written after the setup callback returns), then usb_ep_set_halt() may be
+ * used on ep0 to trigger protocol stalls. Depending on the controller,
+ * it may not be possible to trigger a status-stage protocol stall when the
+ * data stage is over, that is, from within the response's completion
+ * routine.
+ *
+ * For periodic endpoints, like interrupt or isochronous ones, the usb host
+ * arranges to poll once per interval, and the gadget driver usually will
+ * have queued some data to transfer at that time.
+ *
+ * Returns zero, or a negative error code. Endpoints that are not enabled
+ * report errors; errors will also be
+ * reported when the usb peripheral is disconnected.
+ */
+int usb_ep_queue(struct usb_ep *ep,
+ struct usb_request *req, gfp_t gfp_flags)
+{
+ int ret = 0;
+
+ if (WARN_ON_ONCE(!ep->enabled && ep->address)) {
+ ret = -ESHUTDOWN;
+ goto out;
+ }
+
+ ret = ep->ops->queue(ep, req, gfp_flags);
+
+out:
+ trace_usb_ep_queue(ep, req, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_ep_queue);
+
+/**
+ * usb_ep_dequeue - dequeues (cancels, unlinks) an I/O request from an endpoint
+ * @ep:the endpoint associated with the request
+ * @req:the request being canceled
+ *
+ * If the request is still active on the endpoint, it is dequeued and its
+ * completion routine is called (with status -ECONNRESET); else a negative
+ * error code is returned. This is guaranteed to happen before the call to
+ * usb_ep_dequeue() returns.
+ *
+ * Note that some hardware can't clear out write fifos (to unlink the request
+ * at the head of the queue) except as part of disconnecting from usb. Such
+ * restrictions prevent drivers from supporting configuration changes,
+ * even to configuration zero (a "chapter 9" requirement).
+ */
+int usb_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
+{
+ int ret;
+
+ ret = ep->ops->dequeue(ep, req);
+ trace_usb_ep_dequeue(ep, req, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_ep_dequeue);
+
+/**
+ * usb_ep_set_halt - sets the endpoint halt feature.
+ * @ep: the non-isochronous endpoint being stalled
+ *
+ * Use this to stall an endpoint, perhaps as an error report.
+ * Except for control endpoints,
+ * the endpoint stays halted (will not stream any data) until the host
+ * clears this feature; drivers may need to empty the endpoint's request
+ * queue first, to make sure no inappropriate transfers happen.
+ *
+ * Note that while an endpoint CLEAR_FEATURE will be invisible to the
+ * gadget driver, a SET_INTERFACE will not be. To reset endpoints for the
+ * current altsetting, see usb_ep_clear_halt(). When switching altsettings,
+ * it's simplest to use usb_ep_enable() or usb_ep_disable() for the endpoints.
+ *
+ * Returns zero, or a negative error code. On success, this call sets
+ * underlying hardware state that blocks data transfers.
+ * Attempts to halt IN endpoints will fail (returning -EAGAIN) if any
+ * transfer requests are still queued, or if the controller hardware
+ * (usually a FIFO) still holds bytes that the host hasn't collected.
+ */
+int usb_ep_set_halt(struct usb_ep *ep)
+{
+ int ret;
+
+ ret = ep->ops->set_halt(ep, 1);
+ trace_usb_ep_set_halt(ep, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_ep_set_halt);
+
+/**
+ * usb_ep_clear_halt - clears endpoint halt, and resets toggle
+ * @ep:the bulk or interrupt endpoint being reset
+ *
+ * Use this when responding to the standard usb "set interface" request,
+ * for endpoints that aren't reconfigured, after clearing any other state
+ * in the endpoint's i/o queue.
+ *
+ * Returns zero, or a negative error code. On success, this call clears
+ * the underlying hardware state reflecting endpoint halt and data toggle.
+ * Note that some hardware can't support this request (like pxa2xx_udc),
+ * and accordingly can't correctly implement interface altsettings.
+ */
+int usb_ep_clear_halt(struct usb_ep *ep)
+{
+ int ret;
+
+ ret = ep->ops->set_halt(ep, 0);
+ trace_usb_ep_clear_halt(ep, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_ep_clear_halt);
+
+/**
+ * usb_ep_set_wedge - sets the halt feature and ignores clear requests
+ * @ep: the endpoint being wedged
+ *
+ * Use this to stall an endpoint and ignore CLEAR_FEATURE(HALT_ENDPOINT)
+ * requests. If the gadget driver clears the halt status, it will
+ * automatically unwedge the endpoint.
+ *
+ * Returns zero on success, else negative errno.
+ */
+int usb_ep_set_wedge(struct usb_ep *ep)
+{
+ int ret;
+
+ if (ep->ops->set_wedge)
+ ret = ep->ops->set_wedge(ep);
+ else
+ ret = ep->ops->set_halt(ep, 1);
+
+ trace_usb_ep_set_wedge(ep, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_ep_set_wedge);
+
+/**
+ * usb_ep_fifo_status - returns number of bytes in fifo, or error
+ * @ep: the endpoint whose fifo status is being checked.
+ *
+ * FIFO endpoints may have "unclaimed data" in them in certain cases,
+ * such as after aborted transfers. Hosts may not have collected all
+ * the IN data written by the gadget driver (and reported by a request
+ * completion). The gadget driver may not have collected all the data
+ * written OUT to it by the host. Drivers that need precise handling for
+ * fault reporting or recovery may need to use this call.
+ *
+ * This returns the number of such bytes in the fifo, or a negative
+ * errno if the endpoint doesn't use a FIFO or doesn't support such
+ * precise handling.
+ */
+int usb_ep_fifo_status(struct usb_ep *ep)
+{
+ int ret;
+
+ if (ep->ops->fifo_status)
+ ret = ep->ops->fifo_status(ep);
+ else
+ ret = -EOPNOTSUPP;
+
+ trace_usb_ep_fifo_status(ep, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_ep_fifo_status);
+
+/**
+ * usb_ep_fifo_flush - flushes contents of a fifo
+ * @ep: the endpoint whose fifo is being flushed.
+ *
+ * This call may be used to flush the "unclaimed data" that may exist in
+ * an endpoint fifo after abnormal transaction terminations. The call
+ * must never be used except when endpoint is not being used for any
+ * protocol translation.
+ */
+void usb_ep_fifo_flush(struct usb_ep *ep)
+{
+ if (ep->ops->fifo_flush)
+ ep->ops->fifo_flush(ep);
+
+ trace_usb_ep_fifo_flush(ep, 0);
+}
+EXPORT_SYMBOL_GPL(usb_ep_fifo_flush);
+
+/* ------------------------------------------------------------------------- */
+
+/**
+ * usb_gadget_frame_number - returns the current frame number
+ * @gadget: controller that reports the frame number
+ *
+ * Returns the usb frame number, normally eleven bits from a SOF packet,
+ * or negative errno if this device doesn't support this capability.
+ */
+int usb_gadget_frame_number(struct usb_gadget *gadget)
+{
+ int ret;
+
+ ret = gadget->ops->get_frame(gadget);
+
+ trace_usb_gadget_frame_number(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_frame_number);
+
+/**
+ * usb_gadget_wakeup - tries to wake up the host connected to this gadget
+ * @gadget: controller used to wake up the host
+ *
+ * Returns zero on success, else negative error code if the hardware
+ * doesn't support such attempts, or its support has not been enabled
+ * by the usb host. Drivers must return device descriptors that report
+ * their ability to support this, or hosts won't enable it.
+ *
+ * This may also try to use SRP to wake the host and start enumeration,
+ * even if OTG isn't otherwise in use. OTG devices may also start
+ * remote wakeup even when hosts don't explicitly enable it.
+ */
+int usb_gadget_wakeup(struct usb_gadget *gadget)
+{
+ int ret = 0;
+
+ if (!gadget->ops->wakeup) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ ret = gadget->ops->wakeup(gadget);
+
+out:
+ trace_usb_gadget_wakeup(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_wakeup);
+
+/**
+ * usb_gadget_set_selfpowered - sets the device selfpowered feature.
+ * @gadget:the device being declared as self-powered
+ *
+ * this affects the device status reported by the hardware driver
+ * to reflect that it now has a local power supply.
+ *
+ * returns zero on success, else negative errno.
+ */
+int usb_gadget_set_selfpowered(struct usb_gadget *gadget)
+{
+ int ret = 0;
+
+ if (!gadget->ops->set_selfpowered) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ ret = gadget->ops->set_selfpowered(gadget, 1);
+
+out:
+ trace_usb_gadget_set_selfpowered(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_set_selfpowered);
+
+/**
+ * usb_gadget_clear_selfpowered - clear the device selfpowered feature.
+ * @gadget:the device being declared as bus-powered
+ *
+ * this affects the device status reported by the hardware driver.
+ * some hardware may not support bus-powered operation, in which
+ * case this feature's value can never change.
+ *
+ * returns zero on success, else negative errno.
+ */
+int usb_gadget_clear_selfpowered(struct usb_gadget *gadget)
+{
+ int ret = 0;
+
+ if (!gadget->ops->set_selfpowered) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ ret = gadget->ops->set_selfpowered(gadget, 0);
+
+out:
+ trace_usb_gadget_clear_selfpowered(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_clear_selfpowered);
+
+/**
+ * usb_gadget_vbus_connect - Notify controller that VBUS is powered
+ * @gadget:The device which now has VBUS power.
+ * Context: can sleep
+ *
+ * This call is used by a driver for an external transceiver (or GPIO)
+ * that detects a VBUS power session starting. Common responses include
+ * resuming the controller, activating the D+ (or D-) pullup to let the
+ * host detect that a USB device is attached, and starting to draw power
+ * (8mA or possibly more, especially after SET_CONFIGURATION).
+ *
+ * Returns zero on success, else negative errno.
+ */
+int usb_gadget_vbus_connect(struct usb_gadget *gadget)
+{
+ int ret = 0;
+
+ if (!gadget->ops->vbus_session) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ ret = gadget->ops->vbus_session(gadget, 1);
+
+out:
+ trace_usb_gadget_vbus_connect(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_vbus_connect);
+
+/**
+ * usb_gadget_vbus_draw - constrain controller's VBUS power usage
+ * @gadget:The device whose VBUS usage is being described
+ * @mA:How much current to draw, in milliAmperes. This should be twice
+ * the value listed in the configuration descriptor bMaxPower field.
+ *
+ * This call is used by gadget drivers during SET_CONFIGURATION calls,
+ * reporting how much power the device may consume. For example, this
+ * could affect how quickly batteries are recharged.
+ *
+ * Returns zero on success, else negative errno.
+ */
+int usb_gadget_vbus_draw(struct usb_gadget *gadget, unsigned mA)
+{
+ int ret = 0;
+
+ if (!gadget->ops->vbus_draw) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ ret = gadget->ops->vbus_draw(gadget, mA);
+ if (!ret)
+ gadget->mA = mA;
+
+out:
+ trace_usb_gadget_vbus_draw(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_vbus_draw);
+
+/**
+ * usb_gadget_vbus_disconnect - notify controller about VBUS session end
+ * @gadget:the device whose VBUS supply is being described
+ * Context: can sleep
+ *
+ * This call is used by a driver for an external transceiver (or GPIO)
+ * that detects a VBUS power session ending. Common responses include
+ * reversing everything done in usb_gadget_vbus_connect().
+ *
+ * Returns zero on success, else negative errno.
+ */
+int usb_gadget_vbus_disconnect(struct usb_gadget *gadget)
+{
+ int ret = 0;
+
+ if (!gadget->ops->vbus_session) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ ret = gadget->ops->vbus_session(gadget, 0);
+
+out:
+ trace_usb_gadget_vbus_disconnect(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_vbus_disconnect);
+
+/**
+ * usb_gadget_connect - software-controlled connect to USB host
+ * @gadget:the peripheral being connected
+ *
+ * Enables the D+ (or potentially D-) pullup. The host will start
+ * enumerating this gadget when the pullup is active and a VBUS session
+ * is active (the link is powered). This pullup is always enabled unless
+ * usb_gadget_disconnect() has been used to disable it.
+ *
+ * Returns zero on success, else negative errno.
+ */
+int usb_gadget_connect(struct usb_gadget *gadget)
+{
+ int ret = 0;
+
+ if (!gadget->ops->pullup) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (gadget->deactivated) {
+ /*
+ * If gadget is deactivated we only save new state.
+ * Gadget will be connected automatically after activation.
+ */
+ gadget->connected = true;
+ goto out;
+ }
+
+ ret = gadget->ops->pullup(gadget, 1);
+ if (!ret)
+ gadget->connected = 1;
+
+out:
+ trace_usb_gadget_connect(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_connect);
+
+/**
+ * usb_gadget_disconnect - software-controlled disconnect from USB host
+ * @gadget:the peripheral being disconnected
+ *
+ * Disables the D+ (or potentially D-) pullup, which the host may see
+ * as a disconnect (when a VBUS session is active). Not all systems
+ * support software pullup controls.
+ *
+ * Returns zero on success, else negative errno.
+ */
+int usb_gadget_disconnect(struct usb_gadget *gadget)
+{
+ int ret = 0;
+
+ if (!gadget->ops->pullup) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (gadget->deactivated) {
+ /*
+ * If gadget is deactivated we only save new state.
+ * Gadget will stay disconnected after activation.
+ */
+ gadget->connected = false;
+ goto out;
+ }
+
+ ret = gadget->ops->pullup(gadget, 0);
+ if (!ret)
+ gadget->connected = 0;
+
+out:
+ trace_usb_gadget_disconnect(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_disconnect);
+
+/**
+ * usb_gadget_deactivate - deactivate function which is not ready to work
+ * @gadget: the peripheral being deactivated
+ *
+ * This routine may be used during the gadget driver bind() call to prevent
+ * the peripheral from ever being visible to the USB host, unless later
+ * usb_gadget_activate() is called. For example, user mode components may
+ * need to be activated before the system can talk to hosts.
+ *
+ * Returns zero on success, else negative errno.
+ */
+int usb_gadget_deactivate(struct usb_gadget *gadget)
+{
+ int ret = 0;
+
+ if (gadget->deactivated)
+ goto out;
+
+ if (gadget->connected) {
+ ret = usb_gadget_disconnect(gadget);
+ if (ret)
+ goto out;
+
+ /*
+ * If gadget was being connected before deactivation, we want
+ * to reconnect it in usb_gadget_activate().
+ */
+ gadget->connected = true;
+ }
+ gadget->deactivated = true;
+
+out:
+ trace_usb_gadget_deactivate(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_deactivate);
+
+/**
+ * usb_gadget_activate - activate function which is not ready to work
+ * @gadget: the peripheral being activated
+ *
+ * This routine activates gadget which was previously deactivated with
+ * usb_gadget_deactivate() call. It calls usb_gadget_connect() if needed.
+ *
+ * Returns zero on success, else negative errno.
+ */
+int usb_gadget_activate(struct usb_gadget *gadget)
+{
+ int ret = 0;
+
+ if (!gadget->deactivated)
+ goto out;
+
+ gadget->deactivated = false;
+
+ /*
+ * If gadget has been connected before deactivation, or became connected
+ * while it was being deactivated, we call usb_gadget_connect().
+ */
+ if (gadget->connected)
+ ret = usb_gadget_connect(gadget);
+
+out:
+ trace_usb_gadget_activate(gadget, ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_activate);
+
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_HAS_DMA
+
+int usb_gadget_map_request_by_dev(struct device *dev,
+ struct usb_request *req, int is_in)
+{
+ if (req->length == 0)
+ return 0;
+
+ if (req->num_sgs) {
+ int mapped;
+
+ mapped = dma_map_sg(dev, req->sg, req->num_sgs,
+ is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+ if (mapped == 0) {
+ dev_err(dev, "failed to map SGs\n");
+ return -EFAULT;
+ }
+
+ req->num_mapped_sgs = mapped;
+ } else {
+ req->dma = dma_map_single(dev, req->buf, req->length,
+ is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+
+ if (dma_mapping_error(dev, req->dma)) {
+ dev_err(dev, "failed to map buffer\n");
+ return -EFAULT;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_map_request_by_dev);
+
+int usb_gadget_map_request(struct usb_gadget *gadget,
+ struct usb_request *req, int is_in)
+{
+ return usb_gadget_map_request_by_dev(gadget->dev.parent, req, is_in);
+}
+EXPORT_SYMBOL_GPL(usb_gadget_map_request);
+
+void usb_gadget_unmap_request_by_dev(struct device *dev,
+ struct usb_request *req, int is_in)
+{
+ if (req->length == 0)
+ return;
+
+ if (req->num_mapped_sgs) {
+ dma_unmap_sg(dev, req->sg, req->num_mapped_sgs,
+ is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+
+ req->num_mapped_sgs = 0;
+ } else {
+ dma_unmap_single(dev, req->dma, req->length,
+ is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+ }
+}
+EXPORT_SYMBOL_GPL(usb_gadget_unmap_request_by_dev);
+
+void usb_gadget_unmap_request(struct usb_gadget *gadget,
+ struct usb_request *req, int is_in)
+{
+ usb_gadget_unmap_request_by_dev(gadget->dev.parent, req, is_in);
+}
+EXPORT_SYMBOL_GPL(usb_gadget_unmap_request);
+
+#endif /* CONFIG_HAS_DMA */
+
+/* ------------------------------------------------------------------------- */
+
+/**
+ * usb_gadget_giveback_request - give the request back to the gadget layer
+ * Context: in_interrupt()
+ *
+ * This is called by device controller drivers in order to return the
+ * completed request back to the gadget layer.
+ */
+void usb_gadget_giveback_request(struct usb_ep *ep,
+ struct usb_request *req)
+{
+ if (likely(req->status == 0))
+ usb_led_activity(USB_LED_EVENT_GADGET);
+
+ trace_usb_gadget_giveback_request(ep, req, 0);
+
+ req->complete(ep, req);
+}
+EXPORT_SYMBOL_GPL(usb_gadget_giveback_request);
+
+/* ------------------------------------------------------------------------- */
+
+/**
+ * gadget_find_ep_by_name - returns ep whose name is the same as sting passed
+ * in second parameter or NULL if searched endpoint not found
+ * @g: controller to check for quirk
+ * @name: name of searched endpoint
+ */
+struct usb_ep *gadget_find_ep_by_name(struct usb_gadget *g, const char *name)
+{
+ struct usb_ep *ep;
+
+ gadget_for_each_ep(ep, g) {
+ if (!strcmp(ep->name, name))
+ return ep;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(gadget_find_ep_by_name);
+
+/* ------------------------------------------------------------------------- */
+
+int usb_gadget_ep_match_desc(struct usb_gadget *gadget,
+ struct usb_ep *ep, struct usb_endpoint_descriptor *desc,
+ struct usb_ss_ep_comp_descriptor *ep_comp)
+{
+ u8 type;
+ u16 max;
+ int num_req_streams = 0;
+
+ /* endpoint already claimed? */
+ if (ep->claimed)
+ return 0;
+
+ type = usb_endpoint_type(desc);
+ max = 0x7ff & usb_endpoint_maxp(desc);
+
+ if (usb_endpoint_dir_in(desc) && !ep->caps.dir_in)
+ return 0;
+ if (usb_endpoint_dir_out(desc) && !ep->caps.dir_out)
+ return 0;
+
+ if (max > ep->maxpacket_limit)
+ return 0;
+
+ /* "high bandwidth" works only at high speed */
+ if (!gadget_is_dualspeed(gadget) && usb_endpoint_maxp(desc) & (3<<11))
+ return 0;
+
+ switch (type) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ /* only support ep0 for portable CONTROL traffic */
+ return 0;
+ case USB_ENDPOINT_XFER_ISOC:
+ if (!ep->caps.type_iso)
+ return 0;
+ /* ISO: limit 1023 bytes full speed, 1024 high/super speed */
+ if (!gadget_is_dualspeed(gadget) && max > 1023)
+ return 0;
+ break;
+ case USB_ENDPOINT_XFER_BULK:
+ if (!ep->caps.type_bulk)
+ return 0;
+ if (ep_comp && gadget_is_superspeed(gadget)) {
+ /* Get the number of required streams from the
+ * EP companion descriptor and see if the EP
+ * matches it
+ */
+ num_req_streams = ep_comp->bmAttributes & 0x1f;
+ if (num_req_streams > ep->max_streams)
+ return 0;
+ }
+ break;
+ case USB_ENDPOINT_XFER_INT:
+ /* Bulk endpoints handle interrupt transfers,
+ * except the toggle-quirky iso-synch kind
+ */
+ if (!ep->caps.type_int && !ep->caps.type_bulk)
+ return 0;
+ /* INT: limit 64 bytes full speed, 1024 high/super speed */
+ if (!gadget_is_dualspeed(gadget) && max > 64)
+ return 0;
+ break;
+ }
+
+ return 1;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_ep_match_desc);
+
+/* ------------------------------------------------------------------------- */
+
+static void usb_gadget_state_work(struct work_struct *work)
+{
+ struct usb_gadget *gadget = work_to_gadget(work);
+ struct usb_udc *udc = gadget->udc;
+
+ if (udc)
+ sysfs_notify(&udc->dev.kobj, NULL, "state");
+}
+
+void usb_gadget_set_state(struct usb_gadget *gadget,
+ enum usb_device_state state)
+{
+ gadget->state = state;
+ schedule_work(&gadget->work);
+}
+EXPORT_SYMBOL_GPL(usb_gadget_set_state);
+
+/* ------------------------------------------------------------------------- */
+
+static void usb_udc_connect_control(struct usb_udc *udc)
+{
+ if (udc->vbus)
+ usb_gadget_connect(udc->gadget);
+ else
+ usb_gadget_disconnect(udc->gadget);
+}
+
+/**
+ * usb_udc_vbus_handler - updates the udc core vbus status, and try to
+ * connect or disconnect gadget
+ * @gadget: The gadget which vbus change occurs
+ * @status: The vbus status
+ *
+ * The udc driver calls it when it wants to connect or disconnect gadget
+ * according to vbus status.
+ */
+void usb_udc_vbus_handler(struct usb_gadget *gadget, bool status)
+{
+ struct usb_udc *udc = gadget->udc;
+
+ if (udc) {
+ udc->vbus = status;
+ usb_udc_connect_control(udc);
+ }
+}
+EXPORT_SYMBOL_GPL(usb_udc_vbus_handler);
+
+/**
+ * usb_gadget_udc_reset - notifies the udc core that bus reset occurs
+ * @gadget: The gadget which bus reset occurs
+ * @driver: The gadget driver we want to notify
+ *
+ * If the udc driver has bus reset handler, it needs to call this when the bus
+ * reset occurs, it notifies the gadget driver that the bus reset occurs as
+ * well as updates gadget state.
+ */
+void usb_gadget_udc_reset(struct usb_gadget *gadget,
+ struct usb_gadget_driver *driver)
+{
+ driver->reset(gadget);
+ usb_gadget_set_state(gadget, USB_STATE_DEFAULT);
+}
+EXPORT_SYMBOL_GPL(usb_gadget_udc_reset);
+
+/**
+ * usb_gadget_udc_start - tells usb device controller to start up
+ * @udc: The UDC to be started
+ *
+ * This call is issued by the UDC Class driver when it's about
+ * to register a gadget driver to the device controller, before
+ * calling gadget driver's bind() method.
+ *
+ * It allows the controller to be powered off until strictly
+ * necessary to have it powered on.
+ *
+ * Returns zero on success, else negative errno.
+ */
+static inline int usb_gadget_udc_start(struct usb_udc *udc)
+{
+ return udc->gadget->ops->udc_start(udc->gadget, udc->driver);
+}
+
+/**
+ * usb_gadget_udc_stop - tells usb device controller we don't need it anymore
+ * @gadget: The device we want to stop activity
+ * @driver: The driver to unbind from @gadget
+ *
+ * This call is issued by the UDC Class driver after calling
+ * gadget driver's unbind() method.
+ *
+ * The details are implementation specific, but it can go as
+ * far as powering off UDC completely and disable its data
+ * line pullups.
+ */
+static inline void usb_gadget_udc_stop(struct usb_udc *udc)
+{
+ udc->gadget->ops->udc_stop(udc->gadget);
+}
+
+/**
+ * usb_udc_release - release the usb_udc struct
+ * @dev: the dev member within usb_udc
+ *
+ * This is called by driver's core in order to free memory once the last
+ * reference is released.
+ */
+static void usb_udc_release(struct device *dev)
+{
+ struct usb_udc *udc;
+
+ udc = container_of(dev, struct usb_udc, dev);
+ dev_dbg(dev, "releasing '%s'\n", dev_name(dev));
+ kfree(udc);
+}
+
+static const struct attribute_group *usb_udc_attr_groups[];
+
+static void usb_udc_nop_release(struct device *dev)
+{
+ dev_vdbg(dev, "%s\n", __func__);
+}
+
+/**
+ * usb_add_gadget_udc_release - adds a new gadget to the udc class driver list
+ * @parent: the parent device to this udc. Usually the controller driver's
+ * device.
+ * @gadget: the gadget to be added to the list.
+ * @release: a gadget release function.
+ *
+ * Returns zero on success, negative errno otherwise.
+ */
+int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget,
+ void (*release)(struct device *dev))
+{
+ struct usb_udc *udc;
+ struct usb_gadget_driver *driver;
+ int ret = -ENOMEM;
+
+ udc = kzalloc(sizeof(*udc), GFP_KERNEL);
+ if (!udc)
+ goto err1;
+
+ dev_set_name(&gadget->dev, "gadget");
+ INIT_WORK(&gadget->work, usb_gadget_state_work);
+ gadget->dev.parent = parent;
+
+ if (release)
+ gadget->dev.release = release;
+ else
+ gadget->dev.release = usb_udc_nop_release;
+
+ ret = device_register(&gadget->dev);
+ if (ret)
+ goto err2;
+
+ device_initialize(&udc->dev);
+ udc->dev.release = usb_udc_release;
+ udc->dev.class = udc_class;
+ udc->dev.groups = usb_udc_attr_groups;
+ udc->dev.parent = parent;
+ ret = dev_set_name(&udc->dev, "%s", kobject_name(&parent->kobj));
+ if (ret)
+ goto err3;
+
+ udc->gadget = gadget;
+ gadget->udc = udc;
+
+ mutex_lock(&udc_lock);
+ list_add_tail(&udc->list, &udc_list);
+
+ ret = device_add(&udc->dev);
+ if (ret)
+ goto err4;
+
+ usb_gadget_set_state(gadget, USB_STATE_NOTATTACHED);
+ udc->vbus = true;
+
+ /* pick up one of pending gadget drivers */
+ list_for_each_entry(driver, &gadget_driver_pending_list, pending) {
+ if (!driver->udc_name || strcmp(driver->udc_name,
+ dev_name(&udc->dev)) == 0) {
+ ret = udc_bind_to_driver(udc, driver);
+ if (ret != -EPROBE_DEFER)
+ list_del(&driver->pending);
+ if (ret)
+ goto err4;
+ break;
+ }
+ }
+
+ mutex_unlock(&udc_lock);
+
+ return 0;
+
+err4:
+ list_del(&udc->list);
+ mutex_unlock(&udc_lock);
+
+err3:
+ put_device(&udc->dev);
+ device_del(&gadget->dev);
+
+err2:
+ put_device(&gadget->dev);
+ kfree(udc);
+
+err1:
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_add_gadget_udc_release);
+
+/**
+ * usb_get_gadget_udc_name - get the name of the first UDC controller
+ * This functions returns the name of the first UDC controller in the system.
+ * Please note that this interface is usefull only for legacy drivers which
+ * assume that there is only one UDC controller in the system and they need to
+ * get its name before initialization. There is no guarantee that the UDC
+ * of the returned name will be still available, when gadget driver registers
+ * itself.
+ *
+ * Returns pointer to string with UDC controller name on success, NULL
+ * otherwise. Caller should kfree() returned string.
+ */
+char *usb_get_gadget_udc_name(void)
+{
+ struct usb_udc *udc;
+ char *name = NULL;
+
+ /* For now we take the first available UDC */
+ mutex_lock(&udc_lock);
+ list_for_each_entry(udc, &udc_list, list) {
+ if (!udc->driver) {
+ name = kstrdup(udc->gadget->name, GFP_KERNEL);
+ break;
+ }
+ }
+ mutex_unlock(&udc_lock);
+ return name;
+}
+EXPORT_SYMBOL_GPL(usb_get_gadget_udc_name);
+
+/**
+ * usb_add_gadget_udc - adds a new gadget to the udc class driver list
+ * @parent: the parent device to this udc. Usually the controller
+ * driver's device.
+ * @gadget: the gadget to be added to the list
+ *
+ * Returns zero on success, negative errno otherwise.
+ */
+int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget)
+{
+ return usb_add_gadget_udc_release(parent, gadget, NULL);
+}
+EXPORT_SYMBOL_GPL(usb_add_gadget_udc);
+
+static void usb_gadget_remove_driver(struct usb_udc *udc)
+{
+ dev_dbg(&udc->dev, "unregistering UDC driver [%s]\n",
+ udc->driver->function);
+
+ kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
+
+ usb_gadget_disconnect(udc->gadget);
+ udc->driver->disconnect(udc->gadget);
+ udc->driver->unbind(udc->gadget);
+ usb_gadget_udc_stop(udc);
+
+ udc->driver = NULL;
+ udc->dev.driver = NULL;
+ udc->gadget->dev.driver = NULL;
+}
+
+/**
+ * usb_del_gadget_udc - deletes @udc from udc_list
+ * @gadget: the gadget to be removed.
+ *
+ * This, will call usb_gadget_unregister_driver() if
+ * the @udc is still busy.
+ */
+void usb_del_gadget_udc(struct usb_gadget *gadget)
+{
+ struct usb_udc *udc = gadget->udc;
+
+ if (!udc)
+ return;
+
+ dev_vdbg(gadget->dev.parent, "unregistering gadget\n");
+
+ mutex_lock(&udc_lock);
+ list_del(&udc->list);
+
+ if (udc->driver) {
+ struct usb_gadget_driver *driver = udc->driver;
+
+ usb_gadget_remove_driver(udc);
+ list_add(&driver->pending, &gadget_driver_pending_list);
+ }
+ mutex_unlock(&udc_lock);
+
+ kobject_uevent(&udc->dev.kobj, KOBJ_REMOVE);
+ flush_work(&gadget->work);
+ device_unregister(&udc->dev);
+ device_unregister(&gadget->dev);
+}
+EXPORT_SYMBOL_GPL(usb_del_gadget_udc);
+
+/* ------------------------------------------------------------------------- */
+
+static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *driver)
+{
+ int ret;
+
+ dev_dbg(&udc->dev, "registering UDC driver [%s]\n",
+ driver->function);
+
+ udc->driver = driver;
+ udc->dev.driver = &driver->driver;
+ udc->gadget->dev.driver = &driver->driver;
+
+ ret = driver->bind(udc->gadget, driver);
+ if (ret)
+ goto err1;
+ ret = usb_gadget_udc_start(udc);
+ if (ret) {
+ driver->unbind(udc->gadget);
+ goto err1;
+ }
+ usb_udc_connect_control(udc);
+
+ kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
+ return 0;
+err1:
+ if (ret != -EISNAM)
+ dev_err(&udc->dev, "failed to start %s: %d\n",
+ udc->driver->function, ret);
+ udc->driver = NULL;
+ udc->dev.driver = NULL;
+ udc->gadget->dev.driver = NULL;
+ return ret;
+}
+
+int usb_gadget_probe_driver(struct usb_gadget_driver *driver)
+{
+ struct usb_udc *udc = NULL;
+ int ret = -ENODEV;
+
+ if (!driver || !driver->bind || !driver->setup)
+ return -EINVAL;
+
+ mutex_lock(&udc_lock);
+ if (driver->udc_name) {
+ list_for_each_entry(udc, &udc_list, list) {
+ ret = strcmp(driver->udc_name, dev_name(&udc->dev));
+ if (!ret)
+ break;
+ }
+ if (!ret && !udc->driver)
+ goto found;
+ } else {
+ list_for_each_entry(udc, &udc_list, list) {
+ /* For now we take the first one */
+ if (!udc->driver)
+ goto found;
+ }
+ }
+
+ if (!driver->match_existing_only) {
+ list_add_tail(&driver->pending, &gadget_driver_pending_list);
+ pr_info("udc-core: couldn't find an available UDC - added [%s] to list of pending drivers\n",
+ driver->function);
+ ret = 0;
+ }
+
+ mutex_unlock(&udc_lock);
+ return ret;
+found:
+ ret = udc_bind_to_driver(udc, driver);
+ mutex_unlock(&udc_lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_probe_driver);
+
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ struct usb_udc *udc = NULL;
+ int ret = -ENODEV;
+
+ if (!driver || !driver->unbind)
+ return -EINVAL;
+
+ mutex_lock(&udc_lock);
+ list_for_each_entry(udc, &udc_list, list)
+ if (udc->driver == driver) {
+ usb_gadget_remove_driver(udc);
+ usb_gadget_set_state(udc->gadget,
+ USB_STATE_NOTATTACHED);
+ ret = 0;
+ break;
+ }
+
+ if (ret) {
+ list_del(&driver->pending);
+ ret = 0;
+ }
+ mutex_unlock(&udc_lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_unregister_driver);
+
+/* ------------------------------------------------------------------------- */
+
+static ssize_t usb_udc_srp_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t n)
+{
+ struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
+
+ if (sysfs_streq(buf, "1"))
+ usb_gadget_wakeup(udc->gadget);
+
+ return n;
+}
+static DEVICE_ATTR(srp, S_IWUSR, NULL, usb_udc_srp_store);
+
+static ssize_t usb_udc_softconn_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t n)
+{
+ struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
+
+ if (!udc->driver) {
+ dev_err(dev, "soft-connect without a gadget driver\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (sysfs_streq(buf, "connect")) {
+ usb_gadget_udc_start(udc);
+ usb_gadget_connect(udc->gadget);
+ } else if (sysfs_streq(buf, "disconnect")) {
+ usb_gadget_disconnect(udc->gadget);
+ udc->driver->disconnect(udc->gadget);
+ usb_gadget_udc_stop(udc);
+ } else {
+ dev_err(dev, "unsupported command '%s'\n", buf);
+ return -EINVAL;
+ }
+
+ return n;
+}
+static DEVICE_ATTR(soft_connect, S_IWUSR, NULL, usb_udc_softconn_store);
+
+static ssize_t state_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
+ struct usb_gadget *gadget = udc->gadget;
+
+ return sprintf(buf, "%s\n", usb_state_string(gadget->state));
+}
+static DEVICE_ATTR_RO(state);
+
+#define USB_UDC_SPEED_ATTR(name, param) \
+ssize_t name##_show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ struct usb_udc *udc = container_of(dev, struct usb_udc, dev); \
+ return snprintf(buf, PAGE_SIZE, "%s\n", \
+ usb_speed_string(udc->gadget->param)); \
+} \
+static DEVICE_ATTR_RO(name)
+
+static USB_UDC_SPEED_ATTR(current_speed, speed);
+static USB_UDC_SPEED_ATTR(maximum_speed, max_speed);
+
+#define USB_UDC_ATTR(name) \
+ssize_t name##_show(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ struct usb_udc *udc = container_of(dev, struct usb_udc, dev); \
+ struct usb_gadget *gadget = udc->gadget; \
+ \
+ return snprintf(buf, PAGE_SIZE, "%d\n", gadget->name); \
+} \
+static DEVICE_ATTR_RO(name)
+
+static USB_UDC_ATTR(is_otg);
+static USB_UDC_ATTR(is_a_peripheral);
+static USB_UDC_ATTR(b_hnp_enable);
+static USB_UDC_ATTR(a_hnp_support);
+static USB_UDC_ATTR(a_alt_hnp_support);
+static USB_UDC_ATTR(is_selfpowered);
+
+static struct attribute *usb_udc_attrs[] = {
+ &dev_attr_srp.attr,
+ &dev_attr_soft_connect.attr,
+ &dev_attr_state.attr,
+ &dev_attr_current_speed.attr,
+ &dev_attr_maximum_speed.attr,
+
+ &dev_attr_is_otg.attr,
+ &dev_attr_is_a_peripheral.attr,
+ &dev_attr_b_hnp_enable.attr,
+ &dev_attr_a_hnp_support.attr,
+ &dev_attr_a_alt_hnp_support.attr,
+ &dev_attr_is_selfpowered.attr,
+ NULL,
+};
+
+static const struct attribute_group usb_udc_attr_group = {
+ .attrs = usb_udc_attrs,
+};
+
+static const struct attribute_group *usb_udc_attr_groups[] = {
+ &usb_udc_attr_group,
+ NULL,
+};
+
+static int usb_udc_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
+ int ret;
+
+ ret = add_uevent_var(env, "USB_UDC_NAME=%s", udc->gadget->name);
+ if (ret) {
+ dev_err(dev, "failed to add uevent USB_UDC_NAME\n");
+ return ret;
+ }
+
+ if (udc->driver) {
+ ret = add_uevent_var(env, "USB_UDC_DRIVER=%s",
+ udc->driver->function);
+ if (ret) {
+ dev_err(dev, "failed to add uevent USB_UDC_DRIVER\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int __init usb_udc_init(void)
+{
+ udc_class = class_create(THIS_MODULE, "udc");
+ if (IS_ERR(udc_class)) {
+ pr_err("failed to create udc class --> %ld\n",
+ PTR_ERR(udc_class));
+ return PTR_ERR(udc_class);
+ }
+
+ udc_class->dev_uevent = usb_udc_uevent;
+ return 0;
+}
+subsys_initcall(usb_udc_init);
+
+static void __exit usb_udc_exit(void)
+{
+ class_destroy(udc_class);
+}
+module_exit(usb_udc_exit);
+
+MODULE_DESCRIPTION("UDC Framework");
+MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
index dde44450dfa9..77d07904f932 100644
--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -647,12 +647,10 @@ static int dummy_disable(struct usb_ep *_ep)
static struct usb_request *dummy_alloc_request(struct usb_ep *_ep,
gfp_t mem_flags)
{
- struct dummy_ep *ep;
struct dummy_request *req;
if (!_ep)
return NULL;
- ep = usb_ep_to_dummy_ep(_ep);
req = kzalloc(sizeof(*req), mem_flags);
if (!req)
@@ -2444,9 +2442,6 @@ static int dummy_start(struct usb_hcd *hcd)
static void dummy_stop(struct usb_hcd *hcd)
{
- struct dummy *dum;
-
- dum = hcd_to_dummy_hcd(hcd)->dum;
device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs);
dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n");
}
diff --git a/drivers/usb/gadget/udc/m66592-udc.c b/drivers/usb/gadget/udc/m66592-udc.c
index b1cfa96cc88f..6e977dc22570 100644
--- a/drivers/usb/gadget/udc/m66592-udc.c
+++ b/drivers/usb/gadget/udc/m66592-udc.c
@@ -1199,8 +1199,6 @@ static irqreturn_t m66592_irq(int irq, void *_m66592)
struct m66592 *m66592 = _m66592;
u16 intsts0;
u16 intenb0;
- u16 brdysts, nrdysts, bempsts;
- u16 brdyenb, nrdyenb, bempenb;
u16 savepipe;
u16 mask0;
@@ -1224,12 +1222,10 @@ static irqreturn_t m66592_irq(int irq, void *_m66592)
mask0 = intsts0 & intenb0;
if (mask0) {
- brdysts = m66592_read(m66592, M66592_BRDYSTS);
- nrdysts = m66592_read(m66592, M66592_NRDYSTS);
- bempsts = m66592_read(m66592, M66592_BEMPSTS);
- brdyenb = m66592_read(m66592, M66592_BRDYENB);
- nrdyenb = m66592_read(m66592, M66592_NRDYENB);
- bempenb = m66592_read(m66592, M66592_BEMPENB);
+ u16 brdysts = m66592_read(m66592, M66592_BRDYSTS);
+ u16 bempsts = m66592_read(m66592, M66592_BEMPSTS);
+ u16 brdyenb = m66592_read(m66592, M66592_BRDYENB);
+ u16 bempenb = m66592_read(m66592, M66592_BEMPENB);
if (mask0 & M66592_VBINT) {
m66592_write(m66592, 0xffff & ~M66592_VBINT,
@@ -1408,28 +1404,20 @@ static int m66592_dequeue(struct usb_ep *_ep, struct usb_request *_req)
static int m66592_set_halt(struct usb_ep *_ep, int value)
{
- struct m66592_ep *ep;
- struct m66592_request *req;
+ struct m66592_ep *ep = container_of(_ep, struct m66592_ep, ep);
unsigned long flags;
int ret = 0;
- ep = container_of(_ep, struct m66592_ep, ep);
- req = list_entry(ep->queue.next, struct m66592_request, queue);
-
spin_lock_irqsave(&ep->m66592->lock, flags);
if (!list_empty(&ep->queue)) {
ret = -EAGAIN;
- goto out;
- }
- if (value) {
+ } else if (value) {
ep->busy = 1;
pipe_stall(ep->m66592, ep->pipenum);
} else {
ep->busy = 0;
pipe_stop(ep->m66592, ep->pipenum);
}
-
-out:
spin_unlock_irqrestore(&ep->m66592->lock, flags);
return ret;
}
diff --git a/drivers/usb/gadget/udc/mv_u3d_core.c b/drivers/usb/gadget/udc/mv_u3d_core.c
index dafe74eb9ade..b9e19a591322 100644
--- a/drivers/usb/gadget/udc/mv_u3d_core.c
+++ b/drivers/usb/gadget/udc/mv_u3d_core.c
@@ -119,18 +119,14 @@ static int mv_u3d_process_ep_req(struct mv_u3d *u3d, int index,
struct mv_u3d_req *curr_req)
{
struct mv_u3d_trb *curr_trb;
- dma_addr_t cur_deq_lo;
- struct mv_u3d_ep_context *curr_ep_context;
- int trb_complete, actual, remaining_length = 0;
+ int actual, remaining_length = 0;
int direction, ep_num;
int retval = 0;
u32 tmp, status, length;
- curr_ep_context = &u3d->ep_context[index];
direction = index % 2;
ep_num = index / 2;
- trb_complete = 0;
actual = curr_req->req.length;
while (!list_empty(&curr_req->trb_list)) {
@@ -143,15 +139,10 @@ static int mv_u3d_process_ep_req(struct mv_u3d *u3d, int index,
}
curr_trb->trb_hw->ctrl.own = 0;
- if (direction == MV_U3D_EP_DIR_OUT) {
+ if (direction == MV_U3D_EP_DIR_OUT)
tmp = ioread32(&u3d->vuc_regs->rxst[ep_num].statuslo);
- cur_deq_lo =
- ioread32(&u3d->vuc_regs->rxst[ep_num].curdeqlo);
- } else {
+ else
tmp = ioread32(&u3d->vuc_regs->txst[ep_num].statuslo);
- cur_deq_lo =
- ioread32(&u3d->vuc_regs->txst[ep_num].curdeqlo);
- }
status = tmp >> MV_U3D_XFERSTATUS_COMPLETE_SHIFT;
length = tmp & MV_U3D_XFERSTATUS_TRB_LENGTH_MASK;
@@ -527,7 +518,6 @@ static int mv_u3d_ep_enable(struct usb_ep *_ep,
{
struct mv_u3d *u3d;
struct mv_u3d_ep *ep;
- struct mv_u3d_ep_context *ep_context;
u16 max = 0;
unsigned maxburst = 0;
u32 epxcr, direction;
@@ -548,9 +538,6 @@ static int mv_u3d_ep_enable(struct usb_ep *_ep,
_ep->maxburst = 1;
maxburst = _ep->maxburst;
- /* Get the endpoint context address */
- ep_context = (struct mv_u3d_ep_context *)ep->ep_context;
-
/* Set the max burst size */
switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
case USB_ENDPOINT_XFER_BULK:
@@ -633,7 +620,6 @@ static int mv_u3d_ep_disable(struct usb_ep *_ep)
{
struct mv_u3d *u3d;
struct mv_u3d_ep *ep;
- struct mv_u3d_ep_context *ep_context;
u32 epxcr, direction;
unsigned long flags;
@@ -646,9 +632,6 @@ static int mv_u3d_ep_disable(struct usb_ep *_ep)
u3d = ep->u3d;
- /* Get the endpoint context address */
- ep_context = ep->ep_context;
-
direction = mv_u3d_ep_dir(ep);
/* nuke all pending requests (does flush) */
diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c
index 81b6229c7805..ce73b3552269 100644
--- a/drivers/usb/gadget/udc/mv_udc_core.c
+++ b/drivers/usb/gadget/udc/mv_udc_core.c
@@ -129,7 +129,7 @@ static int process_ep_req(struct mv_udc *udc, int index,
{
struct mv_dtd *curr_dtd;
struct mv_dqh *curr_dqh;
- int td_complete, actual, remaining_length;
+ int actual, remaining_length;
int i, direction;
int retval = 0;
u32 errors;
@@ -139,7 +139,6 @@ static int process_ep_req(struct mv_udc *udc, int index,
direction = index % 2;
curr_dtd = curr_req->head;
- td_complete = 0;
actual = curr_req->req.length;
for (i = 0; i < curr_req->dtd_count; i++) {
@@ -412,11 +411,8 @@ static int req_to_dtd(struct mv_req *req)
unsigned count;
int is_last, is_first = 1;
struct mv_dtd *dtd, *last_dtd = NULL;
- struct mv_udc *udc;
dma_addr_t dma;
- udc = req->ep->udc;
-
do {
dtd = build_dtd(req, &count, &dma, &is_last);
if (dtd == NULL)
@@ -567,7 +563,7 @@ static int mv_ep_disable(struct usb_ep *_ep)
struct mv_udc *udc;
struct mv_ep *ep;
struct mv_dqh *dqh;
- u32 bit_pos, epctrlx, direction;
+ u32 epctrlx, direction;
unsigned long flags;
ep = container_of(_ep, struct mv_ep, ep);
@@ -582,7 +578,6 @@ static int mv_ep_disable(struct usb_ep *_ep)
spin_lock_irqsave(&udc->lock, flags);
direction = ep_dir(ep);
- bit_pos = 1 << ((direction == EP_DIR_OUT ? 0 : 16) + ep->ep_num);
/* Reset the max packet length and the interrupt on Setup */
dqh->max_packet_length = 0;
diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c
index 18f5ebd447b8..7c6113432093 100644
--- a/drivers/usb/gadget/udc/net2272.c
+++ b/drivers/usb/gadget/udc/net2272.c
@@ -329,12 +329,10 @@ static int net2272_disable(struct usb_ep *_ep)
static struct usb_request *
net2272_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
{
- struct net2272_ep *ep;
struct net2272_request *req;
if (!_ep)
return NULL;
- ep = container_of(_ep, struct net2272_ep, ep);
req = kzalloc(sizeof(*req), gfp_flags);
if (!req)
@@ -348,10 +346,8 @@ net2272_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
static void
net2272_free_request(struct usb_ep *_ep, struct usb_request *_req)
{
- struct net2272_ep *ep;
struct net2272_request *req;
- ep = container_of(_ep, struct net2272_ep, ep);
if (!_ep || !_req)
return;
diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c
index c894b94b234b..614ab951a4ae 100644
--- a/drivers/usb/gadget/udc/net2280.c
+++ b/drivers/usb/gadget/udc/net2280.c
@@ -211,7 +211,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
goto print_err;
}
- if (dev->quirks & PLX_SUPERSPEED) {
+ if (dev->quirks & PLX_PCIE) {
if ((desc->bEndpointAddress & 0x0f) >= 0x0c) {
ret = -EDOM;
goto print_err;
@@ -245,7 +245,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
/* set type, direction, address; reset fifo counters */
writel(BIT(FIFO_FLUSH), &ep->regs->ep_stat);
- if ((dev->quirks & PLX_SUPERSPEED) && dev->enhanced_mode) {
+ if ((dev->quirks & PLX_PCIE) && dev->enhanced_mode) {
tmp = readl(&ep->cfg->ep_cfg);
/* If USB ep number doesn't match hardware ep number */
if ((tmp & 0xf) != usb_endpoint_num(desc)) {
@@ -316,7 +316,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
BIT(CLEAR_NAK_OUT_PACKETS_MODE), &ep->regs->ep_rsp);
}
- if (dev->quirks & PLX_SUPERSPEED)
+ if (dev->quirks & PLX_PCIE)
ep_clear_seqnum(ep);
writel(tmp, &ep->cfg->ep_cfg);
@@ -527,7 +527,7 @@ static int net2280_disable(struct usb_ep *_ep)
spin_lock_irqsave(&ep->dev->lock, flags);
nuke(ep);
- if (ep->dev->quirks & PLX_SUPERSPEED)
+ if (ep->dev->quirks & PLX_PCIE)
ep_reset_338x(ep->dev->regs, ep);
else
ep_reset_228x(ep->dev->regs, ep);
@@ -862,7 +862,7 @@ static void start_queue(struct net2280_ep *ep, u32 dmactl, u32 td_dma)
writel(readl(&dma->dmastat), &dma->dmastat);
writel(td_dma, &dma->dmadesc);
- if (ep->dev->quirks & PLX_SUPERSPEED)
+ if (ep->dev->quirks & PLX_PCIE)
dmactl |= BIT(DMA_REQUEST_OUTSTANDING);
writel(dmactl, &dma->dmactl);
@@ -1046,7 +1046,7 @@ net2280_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
/* kickstart this i/o queue? */
if (list_empty(&ep->queue) && !ep->stopped &&
- !((dev->quirks & PLX_SUPERSPEED) && ep->dma &&
+ !((dev->quirks & PLX_PCIE) && ep->dma &&
(readl(&ep->regs->ep_rsp) & BIT(CLEAR_ENDPOINT_HALT)))) {
/* use DMA if the endpoint supports it, else pio */
@@ -1169,7 +1169,7 @@ static void scan_dma_completions(struct net2280_ep *ep)
break;
} else if (!ep->is_in &&
(req->req.length % ep->ep.maxpacket) &&
- !(ep->dev->quirks & PLX_SUPERSPEED)) {
+ !(ep->dev->quirks & PLX_PCIE)) {
tmp = readl(&ep->regs->ep_stat);
/* AVOID TROUBLE HERE by not issuing short reads from
@@ -1367,7 +1367,7 @@ net2280_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
ep->wedged = 1;
} else {
clear_halt(ep);
- if (ep->dev->quirks & PLX_SUPERSPEED &&
+ if (ep->dev->quirks & PLX_PCIE &&
!list_empty(&ep->queue) && ep->td_dma)
restart_dma(ep);
ep->wedged = 0;
@@ -2394,7 +2394,7 @@ static int net2280_start(struct usb_gadget *_gadget,
*/
net2280_led_active(dev, 1);
- if ((dev->quirks & PLX_SUPERSPEED) && !dev->bug7734_patched)
+ if ((dev->quirks & PLX_PCIE) && !dev->bug7734_patched)
defect7374_enable_data_eps_zero(dev);
ep0_start(dev);
@@ -3063,7 +3063,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
}
ep->stopped = 0;
dev->protocol_stall = 0;
- if (!(dev->quirks & PLX_SUPERSPEED)) {
+ if (!(dev->quirks & PLX_PCIE)) {
if (ep->dev->quirks & PLX_2280)
tmp = BIT(FIFO_OVERFLOW) |
BIT(FIFO_UNDERFLOW);
@@ -3090,7 +3090,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
cpu_to_le32s(&u.raw[0]);
cpu_to_le32s(&u.raw[1]);
- if ((dev->quirks & PLX_SUPERSPEED) && !dev->bug7734_patched)
+ if ((dev->quirks & PLX_PCIE) && !dev->bug7734_patched)
defect7374_workaround(dev, u.r);
tmp = 0;
@@ -3173,7 +3173,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
} else {
ep_vdbg(dev, "%s clear halt\n", e->ep.name);
clear_halt(e);
- if ((ep->dev->quirks & PLX_SUPERSPEED) &&
+ if ((ep->dev->quirks & PLX_PCIE) &&
!list_empty(&e->queue) && e->td_dma)
restart_dma(e);
}
@@ -3195,7 +3195,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
if (e->ep.name == ep0name)
goto do_stall;
set_halt(e);
- if ((dev->quirks & PLX_SUPERSPEED) && e->dma)
+ if ((dev->quirks & PLX_PCIE) && e->dma)
abort_dma(e);
allow_status(ep);
ep_vdbg(dev, "%s set halt\n", ep->ep.name);
@@ -3234,7 +3234,7 @@ do_stall:
#undef w_length
next_endpoints:
- if ((dev->quirks & PLX_SUPERSPEED) && dev->enhanced_mode) {
+ if ((dev->quirks & PLX_PCIE) && dev->enhanced_mode) {
u32 mask = (BIT(ENDPOINT_0_INTERRUPT) |
USB3380_IRQSTAT0_EP_INTR_MASK_IN |
USB3380_IRQSTAT0_EP_INTR_MASK_OUT);
@@ -3399,7 +3399,7 @@ __acquires(dev->lock)
writel(tmp, &dma->dmastat);
/* dma sync*/
- if (dev->quirks & PLX_SUPERSPEED) {
+ if (dev->quirks & PLX_PCIE) {
u32 r_dmacount = readl(&dma->dmacount);
if (!ep->is_in && (r_dmacount & 0x00FFFFFF) &&
(tmp & BIT(DMA_TRANSACTION_DONE_INTERRUPT)))
@@ -3468,7 +3468,7 @@ static irqreturn_t net2280_irq(int irq, void *_dev)
/* control requests and PIO */
handle_stat0_irqs(dev, readl(&dev->regs->irqstat0));
- if (dev->quirks & PLX_SUPERSPEED) {
+ if (dev->quirks & PLX_PCIE) {
/* re-enable interrupt to trigger any possible new interrupt */
u32 pciirqenb1 = readl(&dev->regs->pciirqenb1);
writel(pciirqenb1 & 0x7FFFFFFF, &dev->regs->pciirqenb1);
@@ -3513,7 +3513,7 @@ static void net2280_remove(struct pci_dev *pdev)
}
if (dev->got_irq)
free_irq(pdev->irq, dev);
- if (dev->quirks & PLX_SUPERSPEED)
+ if (dev->quirks & PLX_PCIE)
pci_disable_msi(pdev);
if (dev->regs)
iounmap(dev->regs);
@@ -3593,7 +3593,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
dev->dep = (struct net2280_dep_regs __iomem *) (base + 0x0200);
dev->epregs = (struct net2280_ep_regs __iomem *) (base + 0x0300);
- if (dev->quirks & PLX_SUPERSPEED) {
+ if (dev->quirks & PLX_PCIE) {
u32 fsmvalue;
u32 usbstat;
dev->usb_ext = (struct usb338x_usb_ext_regs __iomem *)
@@ -3637,7 +3637,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto done;
}
- if (dev->quirks & PLX_SUPERSPEED)
+ if (dev->quirks & PLX_PCIE)
if (pci_enable_msi(pdev))
ep_err(dev, "Failed to enable MSI mode\n");
@@ -3755,10 +3755,19 @@ static const struct pci_device_id pci_ids[] = { {
.class = PCI_CLASS_SERIAL_USB_DEVICE,
.class_mask = ~0,
.vendor = PCI_VENDOR_ID_PLX,
+ .device = 0x2380,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = PLX_PCIE,
+ },
+ {
+ .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
+ .class_mask = ~0,
+ .vendor = PCI_VENDOR_ID_PLX,
.device = 0x3380,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
- .driver_data = PLX_SUPERSPEED,
+ .driver_data = PLX_PCIE | PLX_SUPERSPEED,
},
{
.class = PCI_CLASS_SERIAL_USB_DEVICE,
@@ -3767,7 +3776,7 @@ static const struct pci_device_id pci_ids[] = { {
.device = 0x3382,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
- .driver_data = PLX_SUPERSPEED,
+ .driver_data = PLX_PCIE | PLX_SUPERSPEED,
},
{ /* end: all zeroes */ }
};
diff --git a/drivers/usb/gadget/udc/net2280.h b/drivers/usb/gadget/udc/net2280.h
index 0d32052bf16f..2736a95751c3 100644
--- a/drivers/usb/gadget/udc/net2280.h
+++ b/drivers/usb/gadget/udc/net2280.h
@@ -47,6 +47,7 @@ set_idx_reg(struct net2280_regs __iomem *regs, u32 index, u32 value)
#define PLX_LEGACY BIT(0)
#define PLX_2280 BIT(1)
#define PLX_SUPERSPEED BIT(2)
+#define PLX_PCIE BIT(3)
#define REG_DIAG 0x0
#define RETRY_COUNTER 16
diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c
index ebc51ec5790a..a97da645c1b9 100644
--- a/drivers/usb/gadget/udc/pch_udc.c
+++ b/drivers/usb/gadget/udc/pch_udc.c
@@ -1477,11 +1477,11 @@ static void complete_req(struct pch_udc_ep *ep, struct pch_udc_request *req,
req->dma_mapped = 0;
}
ep->halted = 1;
- spin_lock(&dev->lock);
+ spin_unlock(&dev->lock);
if (!ep->in)
pch_udc_ep_clear_rrdy(ep);
usb_gadget_giveback_request(&ep->ep, &req->req);
- spin_unlock(&dev->lock);
+ spin_lock(&dev->lock);
ep->halted = halted;
}
@@ -1984,9 +1984,8 @@ static int pch_udc_pcd_set_halt(struct usb_ep *usbep, int halt)
if (ep->num == PCH_UDC_EP0)
ep->dev->stall = 1;
pch_udc_ep_set_stall(ep);
- pch_udc_enable_ep_interrupts(ep->dev,
- PCH_UDC_EPINT(ep->in,
- ep->num));
+ pch_udc_enable_ep_interrupts(
+ ep->dev, PCH_UDC_EPINT(ep->in, ep->num));
} else {
pch_udc_ep_clear_stall(ep);
}
@@ -2451,16 +2450,11 @@ static void pch_udc_svc_control_out(struct pch_udc_dev *dev)
*/
static void pch_udc_postsvc_epinters(struct pch_udc_dev *dev, int ep_num)
{
- struct pch_udc_ep *ep;
- struct pch_udc_request *req;
-
- ep = &dev->ep[UDC_EPIN_IDX(ep_num)];
- if (!list_empty(&ep->queue)) {
- req = list_entry(ep->queue.next, struct pch_udc_request, queue);
- pch_udc_enable_ep_interrupts(ep->dev,
- PCH_UDC_EPINT(ep->in, ep->num));
- pch_udc_ep_clear_nak(ep);
- }
+ struct pch_udc_ep *ep = &dev->ep[UDC_EPIN_IDX(ep_num)];
+ if (list_empty(&ep->queue))
+ return;
+ pch_udc_enable_ep_interrupts(ep->dev, PCH_UDC_EPINT(ep->in, ep->num));
+ pch_udc_ep_clear_nak(ep);
}
/**
@@ -2573,9 +2567,9 @@ static void pch_udc_svc_ur_interrupt(struct pch_udc_dev *dev)
empty_req_queue(ep);
}
if (dev->driver) {
- spin_lock(&dev->lock);
- usb_gadget_udc_reset(&dev->gadget, dev->driver);
spin_unlock(&dev->lock);
+ usb_gadget_udc_reset(&dev->gadget, dev->driver);
+ spin_lock(&dev->lock);
}
}
@@ -2654,9 +2648,9 @@ static void pch_udc_svc_intf_interrupt(struct pch_udc_dev *dev)
dev->ep[i].halted = 0;
}
dev->stall = 0;
- spin_lock(&dev->lock);
- dev->driver->setup(&dev->gadget, &dev->setup_data);
spin_unlock(&dev->lock);
+ dev->driver->setup(&dev->gadget, &dev->setup_data);
+ spin_lock(&dev->lock);
}
/**
@@ -2691,9 +2685,9 @@ static void pch_udc_svc_cfg_interrupt(struct pch_udc_dev *dev)
dev->stall = 0;
/* call gadget zero with setup data received */
- spin_lock(&dev->lock);
- dev->driver->setup(&dev->gadget, &dev->setup_data);
spin_unlock(&dev->lock);
+ dev->driver->setup(&dev->gadget, &dev->setup_data);
+ spin_lock(&dev->lock);
}
/**
diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c
index 001a3b74a993..ad140aa00132 100644
--- a/drivers/usb/gadget/udc/pxa27x_udc.c
+++ b/drivers/usb/gadget/udc/pxa27x_udc.c
@@ -1825,13 +1825,10 @@ fail:
* Disables all udc endpoints (even control endpoint), report disconnect to
* the gadget user.
*/
-static void stop_activity(struct pxa_udc *udc, struct usb_gadget_driver *driver)
+static void stop_activity(struct pxa_udc *udc)
{
int i;
- /* don't disconnect drivers more than once */
- if (udc->gadget.speed == USB_SPEED_UNKNOWN)
- driver = NULL;
udc->gadget.speed = USB_SPEED_UNKNOWN;
for (i = 0; i < NR_USB_ENDPOINTS; i++)
@@ -1848,7 +1845,7 @@ static int pxa27x_udc_stop(struct usb_gadget *g)
{
struct pxa_udc *udc = to_pxa(g);
- stop_activity(udc, NULL);
+ stop_activity(udc);
udc_disable(udc);
udc->driver = NULL;
@@ -2296,7 +2293,7 @@ static void irq_udc_reset(struct pxa_udc *udc)
if ((udccr & UDCCR_UDA) == 0) {
dev_dbg(udc->dev, "USB reset start\n");
- stop_activity(udc, udc->driver);
+ stop_activity(udc);
}
udc->gadget.speed = USB_SPEED_FULL;
memset(&udc->stats, 0, sizeof udc->stats);
diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c
index 8b300e6da7fc..f2c8862093a2 100644
--- a/drivers/usb/gadget/udc/r8a66597-udc.c
+++ b/drivers/usb/gadget/udc/r8a66597-udc.c
@@ -1464,8 +1464,6 @@ static irqreturn_t r8a66597_irq(int irq, void *_r8a66597)
struct r8a66597 *r8a66597 = _r8a66597;
u16 intsts0;
u16 intenb0;
- u16 brdysts, nrdysts, bempsts;
- u16 brdyenb, nrdyenb, bempenb;
u16 savepipe;
u16 mask0;
@@ -1481,12 +1479,10 @@ static irqreturn_t r8a66597_irq(int irq, void *_r8a66597)
mask0 = intsts0 & intenb0;
if (mask0) {
- brdysts = r8a66597_read(r8a66597, BRDYSTS);
- nrdysts = r8a66597_read(r8a66597, NRDYSTS);
- bempsts = r8a66597_read(r8a66597, BEMPSTS);
- brdyenb = r8a66597_read(r8a66597, BRDYENB);
- nrdyenb = r8a66597_read(r8a66597, NRDYENB);
- bempenb = r8a66597_read(r8a66597, BEMPENB);
+ u16 brdysts = r8a66597_read(r8a66597, BRDYSTS);
+ u16 bempsts = r8a66597_read(r8a66597, BEMPSTS);
+ u16 brdyenb = r8a66597_read(r8a66597, BRDYENB);
+ u16 bempenb = r8a66597_read(r8a66597, BEMPENB);
if (mask0 & VBINT) {
r8a66597_write(r8a66597, 0xffff & ~VBINT,
@@ -1658,20 +1654,14 @@ static int r8a66597_dequeue(struct usb_ep *_ep, struct usb_request *_req)
static int r8a66597_set_halt(struct usb_ep *_ep, int value)
{
- struct r8a66597_ep *ep;
- struct r8a66597_request *req;
+ struct r8a66597_ep *ep = container_of(_ep, struct r8a66597_ep, ep);
unsigned long flags;
int ret = 0;
- ep = container_of(_ep, struct r8a66597_ep, ep);
- req = get_request_from_ep(ep);
-
spin_lock_irqsave(&ep->r8a66597->lock, flags);
if (!list_empty(&ep->queue)) {
ret = -EAGAIN;
- goto out;
- }
- if (value) {
+ } else if (value) {
ep->busy = 1;
pipe_stall(ep->r8a66597, ep->pipenum);
} else {
@@ -1679,8 +1669,6 @@ static int r8a66597_set_halt(struct usb_ep *_ep, int value)
ep->wedge = 0;
pipe_stop(ep->r8a66597, ep->pipenum);
}
-
-out:
spin_unlock_irqrestore(&ep->r8a66597->lock, flags);
return ret;
}
diff --git a/drivers/usb/gadget/udc/trace.c b/drivers/usb/gadget/udc/trace.c
new file mode 100644
index 000000000000..8c551ab91ad8
--- /dev/null
+++ b/drivers/usb/gadget/udc/trace.c
@@ -0,0 +1,18 @@
+/**
+ * trace.c - USB Gadget Framework Trace Support
+ *
+ * Copyright (C) 2016 Intel Corporation
+ * Author: Felipe Balbi <felipe.balbi@linux.intel.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 of
+ * the License as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#define CREATE_TRACE_POINTS
+#include "trace.h"
diff --git a/drivers/usb/gadget/udc/trace.h b/drivers/usb/gadget/udc/trace.h
new file mode 100644
index 000000000000..da29874b5366
--- /dev/null
+++ b/drivers/usb/gadget/udc/trace.h
@@ -0,0 +1,298 @@
+/**
+ * udc.c - Core UDC Framework
+ *
+ * Copyright (C) 2016 Intel Corporation
+ * Author: Felipe Balbi <felipe.balbi@linux.intel.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 of
+ * the License as published by the Free Software Foundation.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM gadget
+
+#if !defined(__UDC_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define __UDC_TRACE_H
+
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+#include <asm/byteorder.h>
+#include <linux/usb/gadget.h>
+
+DECLARE_EVENT_CLASS(udc_log_gadget,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret),
+ TP_STRUCT__entry(
+ __field(enum usb_device_speed, speed)
+ __field(enum usb_device_speed, max_speed)
+ __field(enum usb_device_state, state)
+ __field(unsigned, mA)
+ __field(unsigned, sg_supported)
+ __field(unsigned, is_otg)
+ __field(unsigned, is_a_peripheral)
+ __field(unsigned, b_hnp_enable)
+ __field(unsigned, a_hnp_support)
+ __field(unsigned, hnp_polling_support)
+ __field(unsigned, host_request_flag)
+ __field(unsigned, quirk_ep_out_aligned_size)
+ __field(unsigned, quirk_altset_not_supp)
+ __field(unsigned, quirk_stall_not_supp)
+ __field(unsigned, quirk_zlp_not_supp)
+ __field(unsigned, is_selfpowered)
+ __field(unsigned, deactivated)
+ __field(unsigned, connected)
+ __field(int, ret)
+ ),
+ TP_fast_assign(
+ __entry->speed = g->speed;
+ __entry->max_speed = g->max_speed;
+ __entry->state = g->state;
+ __entry->mA = g->mA;
+ __entry->sg_supported = g->sg_supported;
+ __entry->is_otg = g->is_otg;
+ __entry->is_a_peripheral = g->is_a_peripheral;
+ __entry->b_hnp_enable = g->b_hnp_enable;
+ __entry->a_hnp_support = g->a_hnp_support;
+ __entry->hnp_polling_support = g->hnp_polling_support;
+ __entry->host_request_flag = g->host_request_flag;
+ __entry->quirk_ep_out_aligned_size = g->quirk_ep_out_aligned_size;
+ __entry->quirk_altset_not_supp = g->quirk_altset_not_supp;
+ __entry->quirk_stall_not_supp = g->quirk_stall_not_supp;
+ __entry->quirk_zlp_not_supp = g->quirk_zlp_not_supp;
+ __entry->is_selfpowered = g->is_selfpowered;
+ __entry->deactivated = g->deactivated;
+ __entry->connected = g->connected;
+ __entry->ret = ret;
+ ),
+ TP_printk("speed %d/%d state %d %dmA [%s%s%s%s%s%s%s%s%s%s%s%s%s%s] --> %d",
+ __entry->speed, __entry->max_speed, __entry->state, __entry->mA,
+ __entry->sg_supported ? "sg:" : "",
+ __entry->is_otg ? "OTG:" : "",
+ __entry->is_a_peripheral ? "a_peripheral:" : "",
+ __entry->b_hnp_enable ? "b_hnp:" : "",
+ __entry->a_hnp_support ? "a_hnp:" : "",
+ __entry->hnp_polling_support ? "hnp_poll:" : "",
+ __entry->host_request_flag ? "hostreq:" : "",
+ __entry->quirk_ep_out_aligned_size ? "out_aligned:" : "",
+ __entry->quirk_altset_not_supp ? "no_altset:" : "",
+ __entry->quirk_stall_not_supp ? "no_stall:" : "",
+ __entry->quirk_zlp_not_supp ? "no_zlp" : "",
+ __entry->is_selfpowered ? "self-powered:" : "bus-powered:",
+ __entry->deactivated ? "deactivated:" : "activated:",
+ __entry->connected ? "connected" : "disconnected",
+ __entry->ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_frame_number,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_wakeup,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_set_selfpowered,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_clear_selfpowered,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_vbus_connect,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_vbus_draw,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_vbus_disconnect,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_connect,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_disconnect,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_deactivate,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DEFINE_EVENT(udc_log_gadget, usb_gadget_activate,
+ TP_PROTO(struct usb_gadget *g, int ret),
+ TP_ARGS(g, ret)
+);
+
+DECLARE_EVENT_CLASS(udc_log_ep,
+ TP_PROTO(struct usb_ep *ep, int ret),
+ TP_ARGS(ep, ret),
+ TP_STRUCT__entry(
+ __dynamic_array(char, name, UDC_TRACE_STR_MAX)
+ __field(unsigned, maxpacket)
+ __field(unsigned, maxpacket_limit)
+ __field(unsigned, max_streams)
+ __field(unsigned, mult)
+ __field(unsigned, maxburst)
+ __field(u8, address)
+ __field(bool, claimed)
+ __field(bool, enabled)
+ __field(int, ret)
+ ),
+ TP_fast_assign(
+ snprintf(__get_str(name), UDC_TRACE_STR_MAX, "%s", ep->name);
+ __entry->maxpacket = ep->maxpacket;
+ __entry->maxpacket_limit = ep->maxpacket_limit;
+ __entry->max_streams = ep->max_streams;
+ __entry->mult = ep->mult;
+ __entry->maxburst = ep->maxburst;
+ __entry->address = ep->address,
+ __entry->claimed = ep->claimed;
+ __entry->enabled = ep->enabled;
+ __entry->ret = ret;
+ ),
+ TP_printk("%s: mps %d/%d streams %d mult %d burst %d addr %02x %s%s --> %d",
+ __get_str(name), __entry->maxpacket, __entry->maxpacket_limit,
+ __entry->max_streams, __entry->mult, __entry->maxburst,
+ __entry->address, __entry->claimed ? "claimed:" : "released:",
+ __entry->enabled ? "enabled" : "disabled", ret)
+);
+
+DEFINE_EVENT(udc_log_ep, usb_ep_set_maxpacket_limit,
+ TP_PROTO(struct usb_ep *ep, int ret),
+ TP_ARGS(ep, ret)
+);
+
+DEFINE_EVENT(udc_log_ep, usb_ep_enable,
+ TP_PROTO(struct usb_ep *ep, int ret),
+ TP_ARGS(ep, ret)
+);
+
+DEFINE_EVENT(udc_log_ep, usb_ep_disable,
+ TP_PROTO(struct usb_ep *ep, int ret),
+ TP_ARGS(ep, ret)
+);
+
+DEFINE_EVENT(udc_log_ep, usb_ep_set_halt,
+ TP_PROTO(struct usb_ep *ep, int ret),
+ TP_ARGS(ep, ret)
+);
+
+DEFINE_EVENT(udc_log_ep, usb_ep_clear_halt,
+ TP_PROTO(struct usb_ep *ep, int ret),
+ TP_ARGS(ep, ret)
+);
+
+DEFINE_EVENT(udc_log_ep, usb_ep_set_wedge,
+ TP_PROTO(struct usb_ep *ep, int ret),
+ TP_ARGS(ep, ret)
+);
+
+DEFINE_EVENT(udc_log_ep, usb_ep_fifo_status,
+ TP_PROTO(struct usb_ep *ep, int ret),
+ TP_ARGS(ep, ret)
+);
+
+DEFINE_EVENT(udc_log_ep, usb_ep_fifo_flush,
+ TP_PROTO(struct usb_ep *ep, int ret),
+ TP_ARGS(ep, ret)
+);
+
+DECLARE_EVENT_CLASS(udc_log_req,
+ TP_PROTO(struct usb_ep *ep, struct usb_request *req, int ret),
+ TP_ARGS(ep, req, ret),
+ TP_STRUCT__entry(
+ __dynamic_array(char, name, UDC_TRACE_STR_MAX)
+ __field(unsigned, length)
+ __field(unsigned, actual)
+ __field(unsigned, num_sgs)
+ __field(unsigned, num_mapped_sgs)
+ __field(unsigned, stream_id)
+ __field(unsigned, no_interrupt)
+ __field(unsigned, zero)
+ __field(unsigned, short_not_ok)
+ __field(int, status)
+ __field(int, ret)
+ ),
+ TP_fast_assign(
+ snprintf(__get_str(name), UDC_TRACE_STR_MAX, "%s", ep->name);
+ __entry->length = req->length;
+ __entry->actual = req->actual;
+ __entry->num_sgs = req->num_sgs;
+ __entry->num_mapped_sgs = req->num_mapped_sgs;
+ __entry->stream_id = req->stream_id;
+ __entry->no_interrupt = req->no_interrupt;
+ __entry->zero = req->zero;
+ __entry->short_not_ok = req->short_not_ok;
+ __entry->status = req->status;
+ __entry->ret = ret;
+ ),
+ TP_printk("%s: length %d/%d sgs %d/%d stream %d %s%s%s status %d --> %d",
+ __get_str(name), __entry->actual, __entry->length,
+ __entry->num_mapped_sgs, __entry->num_sgs, __entry->stream_id,
+ __entry->zero ? "Z" : "z",
+ __entry->short_not_ok ? "S" : "s",
+ __entry->no_interrupt ? "i" : "I",
+ __entry->status, __entry->ret
+ )
+);
+
+DEFINE_EVENT(udc_log_req, usb_ep_alloc_request,
+ TP_PROTO(struct usb_ep *ep, struct usb_request *req, int ret),
+ TP_ARGS(ep, req, ret)
+);
+
+DEFINE_EVENT(udc_log_req, usb_ep_free_request,
+ TP_PROTO(struct usb_ep *ep, struct usb_request *req, int ret),
+ TP_ARGS(ep, req, ret)
+);
+
+DEFINE_EVENT(udc_log_req, usb_ep_queue,
+ TP_PROTO(struct usb_ep *ep, struct usb_request *req, int ret),
+ TP_ARGS(ep, req, ret)
+);
+
+DEFINE_EVENT(udc_log_req, usb_ep_dequeue,
+ TP_PROTO(struct usb_ep *ep, struct usb_request *req, int ret),
+ TP_ARGS(ep, req, ret)
+);
+
+DEFINE_EVENT(udc_log_req, usb_gadget_giveback_request,
+ TP_PROTO(struct usb_ep *ep, struct usb_request *req, int ret),
+ TP_ARGS(ep, req, ret)
+);
+
+#endif /* __UDC_TRACE_H */
+
+/* this part has to be here */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE trace
+
+#include <trace/define_trace.h>
diff --git a/drivers/usb/gadget/udc/udc-core.c b/drivers/usb/gadget/udc/udc-core.c
deleted file mode 100644
index 6e8300d6a737..000000000000
--- a/drivers/usb/gadget/udc/udc-core.c
+++ /dev/null
@@ -1,796 +0,0 @@
-/**
- * udc.c - Core UDC Framework
- *
- * Copyright (C) 2010 Texas Instruments
- * Author: Felipe Balbi <balbi@ti.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 of
- * the License as published by the Free Software Foundation.
- *
- * 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, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/list.h>
-#include <linux/err.h>
-#include <linux/dma-mapping.h>
-#include <linux/workqueue.h>
-
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-#include <linux/usb.h>
-
-/**
- * struct usb_udc - describes one usb device controller
- * @driver - the gadget driver pointer. For use by the class code
- * @dev - the child device to the actual controller
- * @gadget - the gadget. For use by the class code
- * @list - for use by the udc class driver
- * @vbus - for udcs who care about vbus status, this value is real vbus status;
- * for udcs who do not care about vbus status, this value is always true
- *
- * This represents the internal data structure which is used by the UDC-class
- * to hold information about udc driver and gadget together.
- */
-struct usb_udc {
- struct usb_gadget_driver *driver;
- struct usb_gadget *gadget;
- struct device dev;
- struct list_head list;
- bool vbus;
-};
-
-static struct class *udc_class;
-static LIST_HEAD(udc_list);
-static LIST_HEAD(gadget_driver_pending_list);
-static DEFINE_MUTEX(udc_lock);
-
-static int udc_bind_to_driver(struct usb_udc *udc,
- struct usb_gadget_driver *driver);
-
-/* ------------------------------------------------------------------------- */
-
-#ifdef CONFIG_HAS_DMA
-
-int usb_gadget_map_request_by_dev(struct device *dev,
- struct usb_request *req, int is_in)
-{
- if (req->length == 0)
- return 0;
-
- if (req->num_sgs) {
- int mapped;
-
- mapped = dma_map_sg(dev, req->sg, req->num_sgs,
- is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
- if (mapped == 0) {
- dev_err(dev, "failed to map SGs\n");
- return -EFAULT;
- }
-
- req->num_mapped_sgs = mapped;
- } else {
- req->dma = dma_map_single(dev, req->buf, req->length,
- is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-
- if (dma_mapping_error(dev, req->dma)) {
- dev_err(dev, "failed to map buffer\n");
- return -EFAULT;
- }
- }
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(usb_gadget_map_request_by_dev);
-
-int usb_gadget_map_request(struct usb_gadget *gadget,
- struct usb_request *req, int is_in)
-{
- return usb_gadget_map_request_by_dev(gadget->dev.parent, req, is_in);
-}
-EXPORT_SYMBOL_GPL(usb_gadget_map_request);
-
-void usb_gadget_unmap_request_by_dev(struct device *dev,
- struct usb_request *req, int is_in)
-{
- if (req->length == 0)
- return;
-
- if (req->num_mapped_sgs) {
- dma_unmap_sg(dev, req->sg, req->num_mapped_sgs,
- is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-
- req->num_mapped_sgs = 0;
- } else {
- dma_unmap_single(dev, req->dma, req->length,
- is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
- }
-}
-EXPORT_SYMBOL_GPL(usb_gadget_unmap_request_by_dev);
-
-void usb_gadget_unmap_request(struct usb_gadget *gadget,
- struct usb_request *req, int is_in)
-{
- usb_gadget_unmap_request_by_dev(gadget->dev.parent, req, is_in);
-}
-EXPORT_SYMBOL_GPL(usb_gadget_unmap_request);
-
-#endif /* CONFIG_HAS_DMA */
-
-/* ------------------------------------------------------------------------- */
-
-/**
- * usb_gadget_giveback_request - give the request back to the gadget layer
- * Context: in_interrupt()
- *
- * This is called by device controller drivers in order to return the
- * completed request back to the gadget layer.
- */
-void usb_gadget_giveback_request(struct usb_ep *ep,
- struct usb_request *req)
-{
- if (likely(req->status == 0))
- usb_led_activity(USB_LED_EVENT_GADGET);
-
- req->complete(ep, req);
-}
-EXPORT_SYMBOL_GPL(usb_gadget_giveback_request);
-
-/* ------------------------------------------------------------------------- */
-
-/**
- * gadget_find_ep_by_name - returns ep whose name is the same as sting passed
- * in second parameter or NULL if searched endpoint not found
- * @g: controller to check for quirk
- * @name: name of searched endpoint
- */
-struct usb_ep *gadget_find_ep_by_name(struct usb_gadget *g, const char *name)
-{
- struct usb_ep *ep;
-
- gadget_for_each_ep(ep, g) {
- if (!strcmp(ep->name, name))
- return ep;
- }
-
- return NULL;
-}
-EXPORT_SYMBOL_GPL(gadget_find_ep_by_name);
-
-/* ------------------------------------------------------------------------- */
-
-int usb_gadget_ep_match_desc(struct usb_gadget *gadget,
- struct usb_ep *ep, struct usb_endpoint_descriptor *desc,
- struct usb_ss_ep_comp_descriptor *ep_comp)
-{
- u8 type;
- u16 max;
- int num_req_streams = 0;
-
- /* endpoint already claimed? */
- if (ep->claimed)
- return 0;
-
- type = usb_endpoint_type(desc);
- max = 0x7ff & usb_endpoint_maxp(desc);
-
- if (usb_endpoint_dir_in(desc) && !ep->caps.dir_in)
- return 0;
- if (usb_endpoint_dir_out(desc) && !ep->caps.dir_out)
- return 0;
-
- if (max > ep->maxpacket_limit)
- return 0;
-
- /* "high bandwidth" works only at high speed */
- if (!gadget_is_dualspeed(gadget) && usb_endpoint_maxp(desc) & (3<<11))
- return 0;
-
- switch (type) {
- case USB_ENDPOINT_XFER_CONTROL:
- /* only support ep0 for portable CONTROL traffic */
- return 0;
- case USB_ENDPOINT_XFER_ISOC:
- if (!ep->caps.type_iso)
- return 0;
- /* ISO: limit 1023 bytes full speed, 1024 high/super speed */
- if (!gadget_is_dualspeed(gadget) && max > 1023)
- return 0;
- break;
- case USB_ENDPOINT_XFER_BULK:
- if (!ep->caps.type_bulk)
- return 0;
- if (ep_comp && gadget_is_superspeed(gadget)) {
- /* Get the number of required streams from the
- * EP companion descriptor and see if the EP
- * matches it
- */
- num_req_streams = ep_comp->bmAttributes & 0x1f;
- if (num_req_streams > ep->max_streams)
- return 0;
- }
- break;
- case USB_ENDPOINT_XFER_INT:
- /* Bulk endpoints handle interrupt transfers,
- * except the toggle-quirky iso-synch kind
- */
- if (!ep->caps.type_int && !ep->caps.type_bulk)
- return 0;
- /* INT: limit 64 bytes full speed, 1024 high/super speed */
- if (!gadget_is_dualspeed(gadget) && max > 64)
- return 0;
- break;
- }
-
- return 1;
-}
-EXPORT_SYMBOL_GPL(usb_gadget_ep_match_desc);
-
-/* ------------------------------------------------------------------------- */
-
-static void usb_gadget_state_work(struct work_struct *work)
-{
- struct usb_gadget *gadget = work_to_gadget(work);
- struct usb_udc *udc = gadget->udc;
-
- if (udc)
- sysfs_notify(&udc->dev.kobj, NULL, "state");
-}
-
-void usb_gadget_set_state(struct usb_gadget *gadget,
- enum usb_device_state state)
-{
- gadget->state = state;
- schedule_work(&gadget->work);
-}
-EXPORT_SYMBOL_GPL(usb_gadget_set_state);
-
-/* ------------------------------------------------------------------------- */
-
-static void usb_udc_connect_control(struct usb_udc *udc)
-{
- if (udc->vbus)
- usb_gadget_connect(udc->gadget);
- else
- usb_gadget_disconnect(udc->gadget);
-}
-
-/**
- * usb_udc_vbus_handler - updates the udc core vbus status, and try to
- * connect or disconnect gadget
- * @gadget: The gadget which vbus change occurs
- * @status: The vbus status
- *
- * The udc driver calls it when it wants to connect or disconnect gadget
- * according to vbus status.
- */
-void usb_udc_vbus_handler(struct usb_gadget *gadget, bool status)
-{
- struct usb_udc *udc = gadget->udc;
-
- if (udc) {
- udc->vbus = status;
- usb_udc_connect_control(udc);
- }
-}
-EXPORT_SYMBOL_GPL(usb_udc_vbus_handler);
-
-/**
- * usb_gadget_udc_reset - notifies the udc core that bus reset occurs
- * @gadget: The gadget which bus reset occurs
- * @driver: The gadget driver we want to notify
- *
- * If the udc driver has bus reset handler, it needs to call this when the bus
- * reset occurs, it notifies the gadget driver that the bus reset occurs as
- * well as updates gadget state.
- */
-void usb_gadget_udc_reset(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
-{
- driver->reset(gadget);
- usb_gadget_set_state(gadget, USB_STATE_DEFAULT);
-}
-EXPORT_SYMBOL_GPL(usb_gadget_udc_reset);
-
-/**
- * usb_gadget_udc_start - tells usb device controller to start up
- * @udc: The UDC to be started
- *
- * This call is issued by the UDC Class driver when it's about
- * to register a gadget driver to the device controller, before
- * calling gadget driver's bind() method.
- *
- * It allows the controller to be powered off until strictly
- * necessary to have it powered on.
- *
- * Returns zero on success, else negative errno.
- */
-static inline int usb_gadget_udc_start(struct usb_udc *udc)
-{
- return udc->gadget->ops->udc_start(udc->gadget, udc->driver);
-}
-
-/**
- * usb_gadget_udc_stop - tells usb device controller we don't need it anymore
- * @gadget: The device we want to stop activity
- * @driver: The driver to unbind from @gadget
- *
- * This call is issued by the UDC Class driver after calling
- * gadget driver's unbind() method.
- *
- * The details are implementation specific, but it can go as
- * far as powering off UDC completely and disable its data
- * line pullups.
- */
-static inline void usb_gadget_udc_stop(struct usb_udc *udc)
-{
- udc->gadget->ops->udc_stop(udc->gadget);
-}
-
-/**
- * usb_udc_release - release the usb_udc struct
- * @dev: the dev member within usb_udc
- *
- * This is called by driver's core in order to free memory once the last
- * reference is released.
- */
-static void usb_udc_release(struct device *dev)
-{
- struct usb_udc *udc;
-
- udc = container_of(dev, struct usb_udc, dev);
- dev_dbg(dev, "releasing '%s'\n", dev_name(dev));
- kfree(udc);
-}
-
-static const struct attribute_group *usb_udc_attr_groups[];
-
-static void usb_udc_nop_release(struct device *dev)
-{
- dev_vdbg(dev, "%s\n", __func__);
-}
-
-/**
- * usb_add_gadget_udc_release - adds a new gadget to the udc class driver list
- * @parent: the parent device to this udc. Usually the controller driver's
- * device.
- * @gadget: the gadget to be added to the list.
- * @release: a gadget release function.
- *
- * Returns zero on success, negative errno otherwise.
- */
-int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget,
- void (*release)(struct device *dev))
-{
- struct usb_udc *udc;
- struct usb_gadget_driver *driver;
- int ret = -ENOMEM;
-
- udc = kzalloc(sizeof(*udc), GFP_KERNEL);
- if (!udc)
- goto err1;
-
- dev_set_name(&gadget->dev, "gadget");
- INIT_WORK(&gadget->work, usb_gadget_state_work);
- gadget->dev.parent = parent;
-
- if (release)
- gadget->dev.release = release;
- else
- gadget->dev.release = usb_udc_nop_release;
-
- ret = device_register(&gadget->dev);
- if (ret)
- goto err2;
-
- device_initialize(&udc->dev);
- udc->dev.release = usb_udc_release;
- udc->dev.class = udc_class;
- udc->dev.groups = usb_udc_attr_groups;
- udc->dev.parent = parent;
- ret = dev_set_name(&udc->dev, "%s", kobject_name(&parent->kobj));
- if (ret)
- goto err3;
-
- udc->gadget = gadget;
- gadget->udc = udc;
-
- mutex_lock(&udc_lock);
- list_add_tail(&udc->list, &udc_list);
-
- ret = device_add(&udc->dev);
- if (ret)
- goto err4;
-
- usb_gadget_set_state(gadget, USB_STATE_NOTATTACHED);
- udc->vbus = true;
-
- /* pick up one of pending gadget drivers */
- list_for_each_entry(driver, &gadget_driver_pending_list, pending) {
- if (!driver->udc_name || strcmp(driver->udc_name,
- dev_name(&udc->dev)) == 0) {
- ret = udc_bind_to_driver(udc, driver);
- if (ret != -EPROBE_DEFER)
- list_del(&driver->pending);
- if (ret)
- goto err4;
- break;
- }
- }
-
- mutex_unlock(&udc_lock);
-
- return 0;
-
-err4:
- list_del(&udc->list);
- mutex_unlock(&udc_lock);
-
-err3:
- put_device(&udc->dev);
- device_del(&gadget->dev);
-
-err2:
- put_device(&gadget->dev);
- kfree(udc);
-
-err1:
- return ret;
-}
-EXPORT_SYMBOL_GPL(usb_add_gadget_udc_release);
-
-/**
- * usb_get_gadget_udc_name - get the name of the first UDC controller
- * This functions returns the name of the first UDC controller in the system.
- * Please note that this interface is usefull only for legacy drivers which
- * assume that there is only one UDC controller in the system and they need to
- * get its name before initialization. There is no guarantee that the UDC
- * of the returned name will be still available, when gadget driver registers
- * itself.
- *
- * Returns pointer to string with UDC controller name on success, NULL
- * otherwise. Caller should kfree() returned string.
- */
-char *usb_get_gadget_udc_name(void)
-{
- struct usb_udc *udc;
- char *name = NULL;
-
- /* For now we take the first available UDC */
- mutex_lock(&udc_lock);
- list_for_each_entry(udc, &udc_list, list) {
- if (!udc->driver) {
- name = kstrdup(udc->gadget->name, GFP_KERNEL);
- break;
- }
- }
- mutex_unlock(&udc_lock);
- return name;
-}
-EXPORT_SYMBOL_GPL(usb_get_gadget_udc_name);
-
-/**
- * usb_add_gadget_udc - adds a new gadget to the udc class driver list
- * @parent: the parent device to this udc. Usually the controller
- * driver's device.
- * @gadget: the gadget to be added to the list
- *
- * Returns zero on success, negative errno otherwise.
- */
-int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget)
-{
- return usb_add_gadget_udc_release(parent, gadget, NULL);
-}
-EXPORT_SYMBOL_GPL(usb_add_gadget_udc);
-
-static void usb_gadget_remove_driver(struct usb_udc *udc)
-{
- dev_dbg(&udc->dev, "unregistering UDC driver [%s]\n",
- udc->driver->function);
-
- kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
-
- usb_gadget_disconnect(udc->gadget);
- udc->driver->disconnect(udc->gadget);
- udc->driver->unbind(udc->gadget);
- usb_gadget_udc_stop(udc);
-
- udc->driver = NULL;
- udc->dev.driver = NULL;
- udc->gadget->dev.driver = NULL;
-}
-
-/**
- * usb_del_gadget_udc - deletes @udc from udc_list
- * @gadget: the gadget to be removed.
- *
- * This, will call usb_gadget_unregister_driver() if
- * the @udc is still busy.
- */
-void usb_del_gadget_udc(struct usb_gadget *gadget)
-{
- struct usb_udc *udc = gadget->udc;
-
- if (!udc)
- return;
-
- dev_vdbg(gadget->dev.parent, "unregistering gadget\n");
-
- mutex_lock(&udc_lock);
- list_del(&udc->list);
-
- if (udc->driver) {
- struct usb_gadget_driver *driver = udc->driver;
-
- usb_gadget_remove_driver(udc);
- list_add(&driver->pending, &gadget_driver_pending_list);
- }
- mutex_unlock(&udc_lock);
-
- kobject_uevent(&udc->dev.kobj, KOBJ_REMOVE);
- flush_work(&gadget->work);
- device_unregister(&udc->dev);
- device_unregister(&gadget->dev);
-}
-EXPORT_SYMBOL_GPL(usb_del_gadget_udc);
-
-/* ------------------------------------------------------------------------- */
-
-static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *driver)
-{
- int ret;
-
- dev_dbg(&udc->dev, "registering UDC driver [%s]\n",
- driver->function);
-
- udc->driver = driver;
- udc->dev.driver = &driver->driver;
- udc->gadget->dev.driver = &driver->driver;
-
- ret = driver->bind(udc->gadget, driver);
- if (ret)
- goto err1;
- ret = usb_gadget_udc_start(udc);
- if (ret) {
- driver->unbind(udc->gadget);
- goto err1;
- }
- usb_udc_connect_control(udc);
-
- kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
- return 0;
-err1:
- if (ret != -EISNAM)
- dev_err(&udc->dev, "failed to start %s: %d\n",
- udc->driver->function, ret);
- udc->driver = NULL;
- udc->dev.driver = NULL;
- udc->gadget->dev.driver = NULL;
- return ret;
-}
-
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver)
-{
- struct usb_udc *udc = NULL;
- int ret = -ENODEV;
-
- if (!driver || !driver->bind || !driver->setup)
- return -EINVAL;
-
- mutex_lock(&udc_lock);
- if (driver->udc_name) {
- list_for_each_entry(udc, &udc_list, list) {
- ret = strcmp(driver->udc_name, dev_name(&udc->dev));
- if (!ret)
- break;
- }
- if (!ret && !udc->driver)
- goto found;
- } else {
- list_for_each_entry(udc, &udc_list, list) {
- /* For now we take the first one */
- if (!udc->driver)
- goto found;
- }
- }
-
- list_add_tail(&driver->pending, &gadget_driver_pending_list);
- pr_info("udc-core: couldn't find an available UDC - added [%s] to list of pending drivers\n",
- driver->function);
- mutex_unlock(&udc_lock);
- return 0;
-found:
- ret = udc_bind_to_driver(udc, driver);
- mutex_unlock(&udc_lock);
- return ret;
-}
-EXPORT_SYMBOL_GPL(usb_gadget_probe_driver);
-
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
-{
- struct usb_udc *udc = NULL;
- int ret = -ENODEV;
-
- if (!driver || !driver->unbind)
- return -EINVAL;
-
- mutex_lock(&udc_lock);
- list_for_each_entry(udc, &udc_list, list)
- if (udc->driver == driver) {
- usb_gadget_remove_driver(udc);
- usb_gadget_set_state(udc->gadget,
- USB_STATE_NOTATTACHED);
- ret = 0;
- break;
- }
-
- if (ret) {
- list_del(&driver->pending);
- ret = 0;
- }
- mutex_unlock(&udc_lock);
- return ret;
-}
-EXPORT_SYMBOL_GPL(usb_gadget_unregister_driver);
-
-/* ------------------------------------------------------------------------- */
-
-static ssize_t usb_udc_srp_store(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t n)
-{
- struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
-
- if (sysfs_streq(buf, "1"))
- usb_gadget_wakeup(udc->gadget);
-
- return n;
-}
-static DEVICE_ATTR(srp, S_IWUSR, NULL, usb_udc_srp_store);
-
-static ssize_t usb_udc_softconn_store(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t n)
-{
- struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
-
- if (!udc->driver) {
- dev_err(dev, "soft-connect without a gadget driver\n");
- return -EOPNOTSUPP;
- }
-
- if (sysfs_streq(buf, "connect")) {
- usb_gadget_udc_start(udc);
- usb_gadget_connect(udc->gadget);
- } else if (sysfs_streq(buf, "disconnect")) {
- usb_gadget_disconnect(udc->gadget);
- udc->driver->disconnect(udc->gadget);
- usb_gadget_udc_stop(udc);
- } else {
- dev_err(dev, "unsupported command '%s'\n", buf);
- return -EINVAL;
- }
-
- return n;
-}
-static DEVICE_ATTR(soft_connect, S_IWUSR, NULL, usb_udc_softconn_store);
-
-static ssize_t state_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
- struct usb_gadget *gadget = udc->gadget;
-
- return sprintf(buf, "%s\n", usb_state_string(gadget->state));
-}
-static DEVICE_ATTR_RO(state);
-
-#define USB_UDC_SPEED_ATTR(name, param) \
-ssize_t name##_show(struct device *dev, \
- struct device_attribute *attr, char *buf) \
-{ \
- struct usb_udc *udc = container_of(dev, struct usb_udc, dev); \
- return snprintf(buf, PAGE_SIZE, "%s\n", \
- usb_speed_string(udc->gadget->param)); \
-} \
-static DEVICE_ATTR_RO(name)
-
-static USB_UDC_SPEED_ATTR(current_speed, speed);
-static USB_UDC_SPEED_ATTR(maximum_speed, max_speed);
-
-#define USB_UDC_ATTR(name) \
-ssize_t name##_show(struct device *dev, \
- struct device_attribute *attr, char *buf) \
-{ \
- struct usb_udc *udc = container_of(dev, struct usb_udc, dev); \
- struct usb_gadget *gadget = udc->gadget; \
- \
- return snprintf(buf, PAGE_SIZE, "%d\n", gadget->name); \
-} \
-static DEVICE_ATTR_RO(name)
-
-static USB_UDC_ATTR(is_otg);
-static USB_UDC_ATTR(is_a_peripheral);
-static USB_UDC_ATTR(b_hnp_enable);
-static USB_UDC_ATTR(a_hnp_support);
-static USB_UDC_ATTR(a_alt_hnp_support);
-static USB_UDC_ATTR(is_selfpowered);
-
-static struct attribute *usb_udc_attrs[] = {
- &dev_attr_srp.attr,
- &dev_attr_soft_connect.attr,
- &dev_attr_state.attr,
- &dev_attr_current_speed.attr,
- &dev_attr_maximum_speed.attr,
-
- &dev_attr_is_otg.attr,
- &dev_attr_is_a_peripheral.attr,
- &dev_attr_b_hnp_enable.attr,
- &dev_attr_a_hnp_support.attr,
- &dev_attr_a_alt_hnp_support.attr,
- &dev_attr_is_selfpowered.attr,
- NULL,
-};
-
-static const struct attribute_group usb_udc_attr_group = {
- .attrs = usb_udc_attrs,
-};
-
-static const struct attribute_group *usb_udc_attr_groups[] = {
- &usb_udc_attr_group,
- NULL,
-};
-
-static int usb_udc_uevent(struct device *dev, struct kobj_uevent_env *env)
-{
- struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
- int ret;
-
- ret = add_uevent_var(env, "USB_UDC_NAME=%s", udc->gadget->name);
- if (ret) {
- dev_err(dev, "failed to add uevent USB_UDC_NAME\n");
- return ret;
- }
-
- if (udc->driver) {
- ret = add_uevent_var(env, "USB_UDC_DRIVER=%s",
- udc->driver->function);
- if (ret) {
- dev_err(dev, "failed to add uevent USB_UDC_DRIVER\n");
- return ret;
- }
- }
-
- return 0;
-}
-
-static int __init usb_udc_init(void)
-{
- udc_class = class_create(THIS_MODULE, "udc");
- if (IS_ERR(udc_class)) {
- pr_err("failed to create udc class --> %ld\n",
- PTR_ERR(udc_class));
- return PTR_ERR(udc_class);
- }
-
- udc_class->dev_uevent = usb_udc_uevent;
- return 0;
-}
-subsys_initcall(usb_udc_init);
-
-static void __exit usb_udc_exit(void)
-{
- class_destroy(udc_class);
-}
-module_exit(usb_udc_exit);
-
-MODULE_DESCRIPTION("UDC Framework");
-MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/usb/gadget/udc/udc-xilinx.c b/drivers/usb/gadget/udc/udc-xilinx.c
index 1cbb0ac6b182..f8bf290f1894 100644
--- a/drivers/usb/gadget/udc/udc-xilinx.c
+++ b/drivers/usb/gadget/udc/udc-xilinx.c
@@ -2055,7 +2055,6 @@ static int xudc_probe(struct platform_device *pdev)
struct device_node *np = pdev->dev.of_node;
struct resource *res;
struct xusb_udc *udc;
- struct xusb_ep *ep0;
int irq;
int ret;
u32 ier;
@@ -2119,8 +2118,6 @@ static int xudc_probe(struct platform_device *pdev)
xudc_eps_init(udc);
- ep0 = &udc->ep[0];
-
/* Set device address to 0.*/
udc->write_fn(udc->addr, XUSB_ADDRESS_OFFSET, 0);