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libpayload udc: add interface to add string descriptors

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They're ASCII only, with only one language at a time,
but they should be good enough to report device names and
serial numbers.

BUG=none
BRANCH=none
TEST=with depthcharge CL, check dmesg on the host device

Change-Id: If888e05b2f372f7f0f43fadb108ca7ef4ed3b7c1
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: f0bc4242057d3edc4f4796ebeed2d98d89d60a1d
Original-Change-Id: Ibe42f1b49f412e5482cebb7ebe20f6034352fd12
Original-Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/278300
Original-Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Original-Commit-Queue: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10626
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Patrick Georgi
2015-06-18 00:15:00 +02:00
parent 68f42be887
commit f4227c4b01
3 changed files with 90 additions and 0 deletions
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21
payloads/libpayload/include/udc/udc.h
View File

@ -102,6 +102,22 @@ struct usbdev_ctrl {
void (*add_gadget)(struct usbdev_ctrl *,
struct usbdev_configuration *config);
/**
* Add a set of strings to use for string descriptors.
*
* 's' must point to an array of strings of which the first
* element is unused, with at most 255 elements.
*
* 'm' is the size of 'strings' (ie. the index of the last entry).
*
* 'l' is the USB language code, of which some are defined below,
* eg. LANG_EN_US.
*
* For now, only one language is ever exposed: Calling add_strings overwrites
* older configuration.
*/
void (*add_strings)(unsigned short l, unsigned char m, const char **s);
/**
* Add packet to process by the controller.
* zlp: zero length packet, if such a termination is necessary
@ -136,8 +152,13 @@ struct usbdev_ctrl {
void (*free_data)(void *);
};
#define LANG_DE_DE 0x0407
#define LANG_EN_US 0x0409
void udc_add_gadget(struct usbdev_ctrl *this,
struct usbdev_configuration *config);
void udc_add_strings(unsigned short id, unsigned char count,
const char *strings[]);
void udc_handle_setup(struct usbdev_ctrl *this, int ep, dev_req_t *dr);
#endif