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refactor(ufs): adds a function for fdeviceinit 

time taken for device init varies based on different devices,
instead of waiting for 200ms - we can poll on fdevice init
until it gets cleared, similar to what linux does

Change-Id: I571649231732fde0cd6d5be89b6f14fe905fcaff
Signed-off-by: anans <anans@google.com>
This commit is contained in:
anans 2022-03-21 09:43:11 +05:30 committed by Anand Saminathan
parent 863296898a
commit 50593e696e
2 changed files with 32 additions and 3 deletions
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33
drivers/ufs/ufs.c
View File

@ -734,16 +734,41 @@ size_t ufs_write_blocks(int lun, int lba, const uintptr_t buf, size_t size)
return size - resp->res_trans_cnt;
}
static int ufs_set_fdevice_init(void)
{
unsigned int result;
int timeout;
ufs_set_flag(FLAG_DEVICE_INIT);
timeout = FDEVICEINIT_TIMEOUT_MS;
do {
result = ufs_read_flag(FLAG_DEVICE_INIT);
if (!result) {
break;
}
mdelay(5);
timeout -= 5;
} while (timeout > 0);
if (result != 0U) {
return -ETIMEDOUT;
}
return 0;
}
static void ufs_enum(void)
{
unsigned int blk_num, blk_size;
int i;
int i, result;
ufs_verify_init();
ufs_verify_ready();
ufs_set_flag(FLAG_DEVICE_INIT);
mdelay(200);
result = ufs_set_fdevice_init();
assert(result == 0);
/* dump available LUNs */
for (i = 0; i < UFS_MAX_LUNS; i++) {
ufs_read_capacity(i, &blk_num, &blk_size);
@ -752,6 +777,8 @@ static void ufs_enum(void)
i, blk_num, blk_size);
}
}
(void)result;
}
static void ufs_get_device_info(struct ufs_dev_desc *card_data)

2
include/drivers/ufs.h
View File

@ -265,6 +265,8 @@
#define HCE_ENABLE_INNER_RETRIES 50
#define HCE_ENABLE_TIMEOUT_US 100
#define FDEVICEINIT_TIMEOUT_MS 1500
/**
* ufs_dev_desc - ufs device details from the device descriptor
* @wmanufacturerid: card details