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usb: gadget: push iSerialNumber into gadgets

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This patch pushes the iSerialNumber module argument from composite into
each gadget. Once the user uses the module paramter, the string is
overwritten with the final value.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sebastian Andrzej Siewior 2012-09-10 15:01:54 +02:00 committed by Felipe Balbi
parent 276e2e4f1f
commit 1cf0d26408
4 changed files with 41 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/usb/gadget/composite.c
View File

@ -40,10 +40,6 @@ static char *iProduct;
module_param(iProduct, charp, S_IRUGO);
MODULE_PARM_DESC(iProduct, "USB Product string");
static char *iSerialNumber;
module_param(iSerialNumber, charp, S_IRUGO);
MODULE_PARM_DESC(iSerialNumber, "SerialNumber string");
static char composite_manufacturer[50];
/*-------------------------------------------------------------------------*/
@ -925,7 +921,7 @@ static int get_string(struct usb_composite_dev *cdev,
else if (cdev->product_override == id)
str = iProduct ?: composite->iProduct;
else if (cdev->serial_override == id)
str = iSerialNumber ?: composite->iSerialNumber;
str = composite->iSerialNumber;
else
str = NULL;
if (str) {
@ -1411,6 +1407,7 @@ static void update_unchanged_dev_desc(struct usb_device_descriptor *new,
__le16 idVendor;
__le16 idProduct;
__le16 bcdDevice;
u8 iSerialNumber;
/*
* these variables may have been set in
@ -1419,6 +1416,7 @@ static void update_unchanged_dev_desc(struct usb_device_descriptor *new,
idVendor = new->idVendor;
idProduct = new->idProduct;
bcdDevice = new->bcdDevice;
iSerialNumber = new->iSerialNumber;
*new = *old;
if (idVendor)
@ -1427,6 +1425,8 @@ static void update_unchanged_dev_desc(struct usb_device_descriptor *new,
new->idProduct = idProduct;
if (bcdDevice)
new->bcdDevice = bcdDevice;
if (iSerialNumber)
new->iSerialNumber = iSerialNumber;
}
static struct usb_composite_driver *to_cdriver(struct usb_gadget_driver *gdrv)
@ -1505,8 +1505,7 @@ static int composite_bind(struct usb_gadget *gadget,
cdev->product_override =
override_id(cdev, &cdev->desc.iProduct);
if (iSerialNumber ||
(!cdev->desc.iSerialNumber && composite->iSerialNumber))
if (composite->iSerialNumber)
cdev->serial_override =
override_id(cdev, &cdev->desc.iSerialNumber);
@ -1691,6 +1690,8 @@ void usb_composite_overwrite_options(struct usb_composite_dev *cdev,
struct usb_composite_overwrite *covr)
{
struct usb_device_descriptor *desc = &cdev->desc;
struct usb_gadget_strings *gstr = cdev->driver->strings[0];
struct usb_string *dev_str = gstr->strings;
if (covr->idVendor)
desc->idVendor = cpu_to_le16(covr->idVendor);
@ -1700,4 +1701,9 @@ void usb_composite_overwrite_options(struct usb_composite_dev *cdev,
if (covr->bcdDevice)
desc->bcdDevice = cpu_to_le16(covr->bcdDevice);
if (covr->serial_number) {
desc->iSerialNumber = dev_str[USB_GADGET_SERIAL_IDX].id;
dev_str[USB_GADGET_SERIAL_IDX].s = covr->serial_number;
}
}

21
drivers/usb/gadget/mass_storage.c
View File

@ -83,6 +83,22 @@ static const struct usb_descriptor_header *otg_desc[] = {
NULL,
};
static struct usb_string strings_dev[] = {
[USB_GADGET_MANUFACTURER_IDX].s = "",
[USB_GADGET_PRODUCT_IDX].s = "",
[USB_GADGET_SERIAL_IDX].s = "",
{ } /* end of list */
};
static struct usb_gadget_strings stringtab_dev = {
.language = 0x0409, /* en-us */
.strings = strings_dev,
};
static struct usb_gadget_strings *dev_strings[] = {
&stringtab_dev,
NULL,
};
/****************************** Configurations ******************************/
@ -141,6 +157,10 @@ static int __init msg_bind(struct usb_composite_dev *cdev)
{
int status;
status = usb_string_ids_tab(cdev, strings_dev);
if (status < 0)
return status;
status = usb_add_config(cdev, &msg_config_driver, msg_do_config);
if (status < 0)
return status;
@ -160,6 +180,7 @@ static __refdata struct usb_composite_driver msg_driver = {
.iProduct = DRIVER_DESC,
.max_speed = USB_SPEED_SUPER,
.needs_serial = 1,
.strings = dev_strings,
.bind = msg_bind,
};

6
drivers/usb/gadget/printer.c
View File

@ -118,8 +118,7 @@ static struct printer_dev usb_printer_gadget;
* parameters are in UTF-8 (superset of ASCII's 7 bit characters).
*/
static char *iSerialNum;
module_param(iSerialNum, charp, S_IRUGO);
module_param_named(iSerialNum, coverwrite.serial_number, charp, S_IRUGO);
MODULE_PARM_DESC(iSerialNum, "1");
static char *iPNPstring;
@ -1170,9 +1169,6 @@ static int __init printer_bind_config(struct usb_configuration *c)
init_utsname()->sysname, init_utsname()->release,
gadget->name);
if (iSerialNum)
strlcpy(serial_num, iSerialNum, sizeof serial_num);
if (iPNPstring)
strlcpy(&pnp_string[2], iPNPstring, (sizeof pnp_string)-2);

7
include/linux/usb/composite.h
View File

@ -400,6 +400,7 @@ struct usb_composite_overwrite {
u16 idVendor;
u16 idProduct;
u16 bcdDevice;
char *serial_number;
};
#define USB_GADGET_COMPOSITE_OPTIONS() \
static struct usb_composite_overwrite coverwrite; \
@ -411,7 +412,11 @@ struct usb_composite_overwrite {
MODULE_PARM_DESC(idProduct, "USB Product ID"); \
\
module_param_named(bcdDevice, coverwrite.bcdDevice, ushort, S_IRUGO); \
MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)")
MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); \
\
module_param_named(iSerialNumber, coverwrite.serial_number, charp, \
S_IRUGO); \
MODULE_PARM_DESC(iSerialNumber, "SerialNumber string")
void usb_composite_overwrite_options(struct usb_composite_dev *cdev,
struct usb_composite_overwrite *covr);