Messages in this thread Patch in this message | | | From | Lee Jones <> | Subject | [PATCH 23/47] mtd: nand: stm_nand_bch: erase one block (BCH) | Date | Thu, 1 May 2014 10:56:30 +0100 |
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Adding a function which simply erases a single flash block.
Signed-off-by: Lee Jones <lee.jones@linaro.org> --- drivers/mtd/nand/stm_nand_bch.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/drivers/mtd/nand/stm_nand_bch.c b/drivers/mtd/nand/stm_nand_bch.c index 40767b8..6d7ab79 100644 --- a/drivers/mtd/nand/stm_nand_bch.c +++ b/drivers/mtd/nand/stm_nand_bch.c @@ -458,6 +458,33 @@ static void bch_wait_seq(struct nandi_controller *nandi) dev_err(nandi->dev, "BCH Seq timeout\n"); } +static uint8_t bch_erase_block(struct nandi_controller *nandi, + loff_t offs) +{ + struct bch_prog *prog = &bch_prog_erase_block; + uint8_t status; + + dev_dbg(nandi->dev, "%s: offs = 0x%012llx\n", __func__, offs); + + prog->extra = (uint32_t)(offs >> nandi->page_shift); + + emiss_nandi_select(STM_NANDI_BCH); + + nandi_enable_interrupts(nandi, NANDBCH_INT_SEQNODESOVER); + reinit_completion(&nandi->seq_completed); + + bch_load_prog_cpu(nandi, prog); + + bch_wait_seq(nandi); + + nandi_disable_interrupts(nandi, NANDBCH_INT_SEQNODESOVER); + + status = (uint8_t)(readl(nandi->base + + NANDBCH_CHECK_STATUS_REG_A) & 0xff); + + return status; +} + /* * Initialisation */ -- 1.8.3.2
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