diff options
-rw-r--r-- | drivers/mtd/devices/st_spi_fsm.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index 34aac3f49ba9..5e315e31a839 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c | |||
@@ -793,6 +793,30 @@ static uint8_t stfsm_wait_busy(struct stfsm *fsm) | |||
793 | return FLASH_STATUS_TIMEOUT; | 793 | return FLASH_STATUS_TIMEOUT; |
794 | } | 794 | } |
795 | 795 | ||
796 | static int stfsm_read_status(struct stfsm *fsm, uint8_t cmd, | ||
797 | uint8_t *status) | ||
798 | { | ||
799 | struct stfsm_seq *seq = &stfsm_seq_read_status_fifo; | ||
800 | uint32_t tmp; | ||
801 | |||
802 | dev_dbg(fsm->dev, "reading STA[%s]\n", | ||
803 | (cmd == FLASH_CMD_RDSR) ? "1" : "2"); | ||
804 | |||
805 | seq->seq_opc[0] = (SEQ_OPC_PADS_1 | | ||
806 | SEQ_OPC_CYCLES(8) | | ||
807 | SEQ_OPC_OPCODE(cmd)), | ||
808 | |||
809 | stfsm_load_seq(fsm, seq); | ||
810 | |||
811 | stfsm_read_fifo(fsm, &tmp, 4); | ||
812 | |||
813 | *status = (uint8_t)(tmp >> 24); | ||
814 | |||
815 | stfsm_wait_seq(fsm); | ||
816 | |||
817 | return 0; | ||
818 | } | ||
819 | |||
796 | static int stfsm_wrvcr(struct stfsm *fsm, uint8_t data) | 820 | static int stfsm_wrvcr(struct stfsm *fsm, uint8_t data) |
797 | { | 821 | { |
798 | struct stfsm_seq *seq = &stfsm_seq_wrvcr; | 822 | struct stfsm_seq *seq = &stfsm_seq_wrvcr; |