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bdk: bm92t36: add sanity checks

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If bm92t i2c comms are broken, it can hang hekate. So sanitize buffer and max profile print supported.
This commit is contained in:
CTCaer 2023-02-11 22:40:47 +02:00
parent f9e99212fc
commit ee3fc499cd
1 changed files with 5 additions and 0 deletions
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5
bdk/power/bm92t36.c
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@ -73,18 +73,23 @@ void bm92t36_get_sink_info(bool *inserted, usb_pd_objects_t *usb_pd)
if (inserted) if (inserted)
{ {
memset(buf, 0, sizeof(buf));
_bm92t36_read_reg(buf, 2, STATUS1_REG); _bm92t36_read_reg(buf, 2, STATUS1_REG);
*inserted = buf[0] & STATUS1_INSERT ? true : false; *inserted = buf[0] & STATUS1_INSERT ? true : false;
} }
if (usb_pd) if (usb_pd)
{ {
memset(buf, 0, sizeof(buf));
_bm92t36_read_reg(buf, 29, READ_PDOS_SRC_REG); _bm92t36_read_reg(buf, 29, READ_PDOS_SRC_REG);
memcpy(pdos, &buf[1], 28); memcpy(pdos, &buf[1], 28);
memset(usb_pd, 0, sizeof(usb_pd_objects_t)); memset(usb_pd, 0, sizeof(usb_pd_objects_t));
usb_pd->pdo_no = buf[0] / sizeof(pd_object_t); usb_pd->pdo_no = buf[0] / sizeof(pd_object_t);
if (usb_pd->pdo_no > 7)
usb_pd->pdo_no = 7;
for (u32 i = 0; i < usb_pd->pdo_no; i++) for (u32 i = 0; i < usb_pd->pdo_no; i++)
{ {
usb_pd->pdos[i].amperage = pdos[i].amp * 10; usb_pd->pdos[i].amperage = pdos[i].amp * 10;