diff options
| author | Lee Jones <lee.jones@linaro.org> | 2014-03-20 09:20:56 +0000 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-03-20 04:17:18 -0700 |
| commit | 4eb3f0d8f70b667f8a59cc4f74003884562ef17f (patch) | |
| tree | 393b4e6b7145169cc9191ab2fab8d8a12115676e /drivers/mtd | |
| parent | 218b870f906b609d37737ee176dc4fcba86163d4 (diff) | |
| download | linux-4eb3f0d8f70b667f8a59cc4f74003884562ef17f.tar.bz2 | |
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 <angus.clark@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/devices/st_spi_fsm.c | 36 |
1 files changed, 36 insertions, 0 deletions
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; |