From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yh0-f53.google.com ([209.85.213.53]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VmN3t-0003A2-CV for linux-mtd@lists.infradead.org; Fri, 29 Nov 2013 12:20:45 +0000 Received: by mail-yh0-f53.google.com with SMTP id b20so6561840yha.26 for ; Fri, 29 Nov 2013 04:20:23 -0800 (PST) From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dwmw2@infradead.org Subject: [PATCH v3 25/36] mtd: st_spi_fsm: Prepare default sequences for read/write/erase Date: Fri, 29 Nov 2013 12:19:14 +0000 Message-Id: <1385727565-25794-26-git-send-email-lee.jones@linaro.org> In-Reply-To: <1385727565-25794-1-git-send-email-lee.jones@linaro.org> References: <1385727565-25794-1-git-send-email-lee.jones@linaro.org> Cc: angus.clark@st.com, linus.walleij@linaro.org, Lee Jones , linux-mtd@lists.infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Most chips require a predefined set of FSM message sequences for read, write and erase operations. This patch provides a way to set them up, which it will do so if a chip specific initialisation routine isn't been provided. Signed-off-by: Lee Jones --- drivers/mtd/devices/st_spi_fsm.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index 2369da1..ad277f1 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -441,6 +441,38 @@ static int stfsm_search_prepare_rw_seq(struct stfsm *fsm, return 0; } +/* Prepare a READ/WRITE/ERASE 'default' sequences */ +static int stfsm_prepare_rwe_seqs_default(struct stfsm *fsm) +{ + uint32_t flags = fsm->info->flags; + int ret; + + /* Configure 'READ' sequence */ + ret = stfsm_search_prepare_rw_seq(fsm, &stfsm_seq_read, + default_read_configs); + if (ret) { + dev_err(fsm->dev, + "failed to prep READ sequence with flags [0x%08x]\n", + flags); + return ret; + } + + /* Configure 'WRITE' sequence */ + ret = stfsm_search_prepare_rw_seq(fsm, &stfsm_seq_write, + default_write_configs); + if (ret) { + dev_err(fsm->dev, + "failed to prep WRITE sequence with flags [0x%08x]\n", + flags); + return ret; + } + + /* Configure 'ERASE_SECTOR' sequence */ + stfsm_prepare_erasesec_seq(fsm, &stfsm_seq_erase_sector); + + return 0; +} + static int stfsm_n25q_config(struct stfsm *fsm) { uint32_t flags = fsm->info->flags; @@ -756,6 +788,10 @@ static int stfsm_probe(struct platform_device *pdev) ret = info->config(fsm); if (ret) return ret; + } else { + ret = stfsm_prepare_rwe_seqs_default(fsm); + if (ret) + return ret; } platform_set_drvdata(pdev, fsm); -- 1.8.3.2