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dfu: add dfu_write_by_alt()

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This function is a variant of dfu_write_by_name() and takes a DFU alt
setting number for dfu configuration.

It will be utilised to implement UEFI capsule management protocol for
raw image in a later commit.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
AKASHI Takahiro 2020-10-29 13:47:52 +09:00 committed by Heinrich Schuchardt
parent 6beaa47d4f
commit f234566ef0
2 changed files with 72 additions and 1 deletions
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47
drivers/dfu/dfu_alt.c
View File

@ -76,3 +76,50 @@ done:
return ret;
}
/**
* dfu_write_by_alt() - write data to DFU medium
* @dfu_alt_num: DFU alt setting number
* @addr: Address of data buffer to write
* @len: Number of bytes
* @interface: Destination DFU medium (e.g. "mmc")
* @devstring: Instance number of destination DFU medium (e.g. "1")
*
* This function is storing data received on DFU supported medium which
* is specified by @dfu_alt_name.
*
* Return: 0 - on success, error code - otherwise
*/
int dfu_write_by_alt(int dfu_alt_num, void *addr, unsigned int len,
char *interface, char *devstring)
{
struct dfu_entity *dfu;
int ret;
debug("%s: alt: %d addr: 0x%p len: %d device: %s:%s\n", __func__,
dfu_alt_num, addr, len, interface, devstring);
ret = dfu_init_env_entities(interface, devstring);
if (ret)
goto done;
if (dfu_alt_num < 0) {
pr_err("Invalid alt number: %d", dfu_alt_num);
ret = -ENODEV;
goto done;
}
dfu = dfu_get_entity(dfu_alt_num);
if (!dfu) {
pr_err("DFU entity for alt: %d not found!", dfu_alt_num);
ret = -ENODEV;
goto done;
}
ret = dfu_write_from_mem_addr(dfu, (void *)(uintptr_t)addr, len);
done:
dfu_free_entities();
return ret;
}

26
include/dfu.h
View File

@ -496,6 +496,7 @@ static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr,
}
#endif
#if CONFIG_IS_ENABLED(DFU_WRITE_ALT)
/**
* dfu_write_by_name() - write data to DFU medium
* @dfu_entity_name: Name of DFU entity to write
@ -509,9 +510,24 @@ static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr,
*
* Return: 0 - on success, error code - otherwise
*/
#if CONFIG_IS_ENABLED(DFU_WRITE_ALT)
int dfu_write_by_name(char *dfu_entity_name, void *addr,
unsigned int len, char *interface, char *devstring);
/**
* dfu_write_by_alt() - write data to DFU medium
* @dfu_alt_num: DFU alt setting number
* @addr: Address of data buffer to write
* @len: Number of bytes
* @interface: Destination DFU medium (e.g. "mmc")
* @devstring: Instance number of destination DFU medium (e.g. "1")
*
* This function is storing data received on DFU supported medium which
* is specified by @dfu_alt_name.
*
* Return: 0 - on success, error code - otherwise
*/
int dfu_write_by_alt(int dfu_alt_num, void *addr, unsigned int len,
char *interface, char *devstring);
#else
static inline int dfu_write_by_name(char *dfu_entity_name, void *addr,
unsigned int len, char *interface,
@ -520,6 +536,14 @@ static inline int dfu_write_by_name(char *dfu_entity_name, void *addr,
puts("write support for DFU not available!\n");
return -ENOSYS;
}
static inline int dfu_write_by_alt(int dfu_alt_num, void *addr,
unsigned int len, char *interface,
char *devstring)
{
puts("write support for DFU not available!\n");
return -ENOSYS;
}
#endif
int dfu_add(struct usb_configuration *c);