Messages in this thread Patch in this message | | | From | Lee Jones <> | Subject | [PATCH 29/35] mtd: st_spi_fsm: Add the ability to read the FSM's status | Date | Tue, 18 Feb 2014 14:55:56 +0000 |
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Acked-by Angus Clark <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> --- drivers/mtd/devices/st_spi_fsm.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index a5e2c5a..5b2993d 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) return FLASH_STATUS_TIMEOUT; } +static int stfsm_read_status(struct stfsm *fsm, uint8_t cmd, + uint8_t *status) +{ + struct stfsm_seq *seq = &stfsm_seq_read_status_fifo; + uint32_t tmp; + + dev_dbg(fsm->dev, "reading STA[%s]\n", + (cmd == FLASH_CMD_RDSR) ? "1" : "2"); + + seq->seq_opc[0] = (SEQ_OPC_PADS_1 | + SEQ_OPC_CYCLES(8) | + SEQ_OPC_OPCODE(cmd)), + + stfsm_load_seq(fsm, seq); + + stfsm_read_fifo(fsm, &tmp, 4); + + *status = (uint8_t)(tmp >> 24); + + stfsm_wait_seq(fsm); + + return 0; +} + static int stfsm_wrvcr(struct stfsm *fsm, uint8_t data) { struct stfsm_seq *seq = &stfsm_seq_wrvcr; -- 1.8.3.2
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