From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932376AbaBRO5r (ORCPT ); Tue, 18 Feb 2014 09:57:47 -0500 Received: from mail-wi0-f169.google.com ([209.85.212.169]:57794 "EHLO mail-wi0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932342AbaBRO5o (ORCPT ); Tue, 18 Feb 2014 09:57:44 -0500 From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: lee.jones@linaro.org, DCG_UPD_stlinux_kernel@list.st.com, dwmw2@infradead.org, linux-mtd@lists.infradead.org, computersforpeace@gmail.com, Angus.Clark@st.com 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 Message-Id: <1392735362-1245-30-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1392735362-1245-1-git-send-email-lee.jones@linaro.org> References: <1392735362-1245-1-git-send-email-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Acked-by Angus Clark Signed-off-by: Lee Jones --- 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