diff options
Diffstat (limited to 'chip/npcx')
| -rw-r--r-- | chip/npcx/lpc.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/chip/npcx/lpc.c b/chip/npcx/lpc.c index 5d5e13e185..c86872e927 100644 --- a/chip/npcx/lpc.c +++ b/chip/npcx/lpc.c @@ -548,10 +548,17 @@ DECLARE_IRQ(NPCX_IRQ_PM_CHAN_OBE, lpc_pmc_obe_interrupt, 2); void lpc_port80_interrupt(void) { - port_80_write(NPCX_DP80BUF); + /* Send port 80 data to UART continuously if FIFO is not empty */ + while (IS_BIT_SET(NPCX_DP80STS, 6)) + port_80_write(NPCX_DP80BUF); + + /* If FIFO is overflow */ + if (IS_BIT_SET(NPCX_DP80STS, 7)) { + SET_BIT(NPCX_DP80STS, 7); + CPRINTS("DP80 FIFO Overflow!"); + } - /* No matter what , just clear error status bit */ - SET_BIT(NPCX_DP80STS, 7); + /* Clear pending bit of host writing */ SET_BIT(NPCX_DP80STS, 5); } DECLARE_IRQ(NPCX_IRQ_PORT80, lpc_port80_interrupt, 2); |