From 4eb3f0d8f70b667f8a59cc4f74003884562ef17f Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 20 Mar 2014 09:20:56 +0000 Subject: [PATCH] mtd: st_spi_fsm: Prepare default sequences for read/write/erase 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 Signed-off-by: Brian Norris --- 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 b4d2a188672e..b4afee0e0e33 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; @@ -1151,6 +1183,10 @@ 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; } fsm->mtd.dev.parent = &pdev->dev;