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usb: implement macro for initializing USB strings

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This uses the new unicode string literal feature that is available
now to greatly simplify the initialization of these special string
types. This makes them much more readable at a quick glance.

Change-Id: Iad8b49aa763486608e3bb7e83fb8abfb48ce0a7b
This commit is contained in:
James Buren 2021-03-25 13:10:50 -05:00
parent 7652e6f8df
commit 018372bf39
4 changed files with 22 additions and 47 deletions
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7
firmware/export/usb_drv.h
View file

@ -80,4 +80,11 @@ bool usb_drv_connected(void);
int usb_drv_request_endpoint(int type, int dir);
void usb_drv_release_endpoint(int ep);
/* USB_STRING_INITIALIZER(u"Example String") */
#define USB_STRING_INITIALIZER(S) { \
sizeof(struct usb_string_descriptor) + sizeof(S) - sizeof(*S), \
USB_DT_STRING, \
S \
}
#endif /* _USB_DRV_H */

29
firmware/usbstack/usb_core.c
View file

@ -120,43 +120,22 @@ static const struct usb_qualifier_descriptor __attribute__((aligned(2)))
static const struct usb_string_descriptor __attribute__((aligned(2)))
usb_string_iManufacturer =
{
24,
USB_DT_STRING,
{'R', 'o', 'c', 'k', 'b', 'o', 'x', '.', 'o', 'r', 'g'}
};
USB_STRING_INITIALIZER(u"Rockbox.org");
static const struct usb_string_descriptor __attribute__((aligned(2)))
usb_string_iProduct =
{
42,
USB_DT_STRING,
{'R', 'o', 'c', 'k', 'b', 'o', 'x', ' ',
'm', 'e', 'd', 'i', 'a', ' ',
'p', 'l', 'a', 'y', 'e', 'r'}
};
USB_STRING_INITIALIZER(u"Rockbox media player");
static struct usb_string_descriptor __attribute__((aligned(2)))
usb_string_iSerial =
{
84,
USB_DT_STRING,
{'0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0',
'0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0',
'0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0',
'0', '0', '0', '0', '0', '0', '0', '0'}
};
USB_STRING_INITIALIZER(u"00000000000000000000000000000000000000000");
/* Generic for all targets */
/* this is stringid #0: languages supported */
static const struct usb_string_descriptor __attribute__((aligned(2)))
lang_descriptor =
{
4,
USB_DT_STRING,
{0x0409} /* LANGID US English */
};
USB_STRING_INITIALIZER(u"\x0409"); /* LANGID US English */
static const struct usb_string_descriptor* const usb_strings[] =
{

26
utils/hwstub/stub/main.c
View file

@ -95,35 +95,17 @@ static struct usb_interface_descriptor interface_descriptor =
};
static const struct usb_string_descriptor usb_string_iManufacturer =
{
24,
USB_DT_STRING,
{'R', 'o', 'c', 'k', 'b', 'o', 'x', '.', 'o', 'r', 'g'}
};
USB_STRING_INITIALIZER(u"Rockbox.org");
static const struct usb_string_descriptor usb_string_iProduct =
{
44,
USB_DT_STRING,
{'R', 'o', 'c', 'k', 'b', 'o', 'x', ' ',
'h', 'a', 'r', 'd', 'w', 'a', 'r', 'e', ' ',
's', 't', 'u', 'b'}
};
USB_STRING_INITIALIZER(u"Rockbox hardware stub");
static const struct usb_string_descriptor usb_string_iInterface =
{
14,
USB_DT_STRING,
{'H', 'W', 'S', 't', 'u', 'b'}
};
USB_STRING_INITIALIZER(u"HWStub");
/* this is stringid #0: languages supported */
static const struct usb_string_descriptor lang_descriptor =
{
4,
USB_DT_STRING,
{0x0409} /* LANGID US English */
};
USB_STRING_INITIALIZER(u"\x0409"); /* LANGID US English */
static struct hwstub_version_desc_t version_descriptor =
{

7
utils/hwstub/stub/usb_drv.h
View file

@ -43,5 +43,12 @@ void usb_drv_set_address(int address);
int usb_drv_port_speed(void);
void usb_drv_configure_endpoint(int ep_num, int type);
/* USB_STRING_INITIALIZER(u"Example String") */
#define USB_STRING_INITIALIZER(S) { \
sizeof(struct usb_string_descriptor) + sizeof(S) - sizeof(*S), \
USB_DT_STRING, \
S \
}
#endif /* _USB_DRV_H */