From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932151AbaBRPBk (ORCPT ); Tue, 18 Feb 2014 10:01:40 -0500 Received: from mail-wg0-f53.google.com ([74.125.82.53]:54981 "EHLO mail-wg0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932308AbaBRO5b (ORCPT ); Tue, 18 Feb 2014 09:57:31 -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 24/35] mtd: st_spi_fsm: Prepare default sequences for read/write/erase Date: Tue, 18 Feb 2014 14:55:51 +0000 Message-Id: <1392735362-1245-25-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 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. Acked-by Angus Clark 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 b8570e8..fe538bb 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -845,6 +845,38 @@ 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; @@ -1150,6 +1182,10 @@ 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