lkml.org 
[lkml]   [2014]   [May]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 23/47] mtd: nand: stm_nand_bch: erase one block (BCH)
Date
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


\
 
 \ /
  Last update: 2014-05-01 12:21    [W:0.148 / U:1.172 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site