Messages in this thread Patch in this message | | | From | Lee Jones <> | Subject | [PATCH 24/35] mtd: st_spi_fsm: Prepare default sequences for read/write/erase | Date | Tue, 18 Feb 2014 14:55:51 +0000 |
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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 <angus.clark@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> --- 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
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