[PATCH 1/3] [MTD/NAND] Blackfin NFC driver: Add Blackfin BF52x on-chip NAND Flash controller driver support in bf5xx_nand driver

From: Bryan Wu
Date: Wed Jan 30 2008 - 04:19:35 EST


From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>

Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Signed-off-by: Bryan Wu <bryan.wu@xxxxxxxxxx>
---
drivers/mtd/nand/Kconfig | 2 +-
drivers/mtd/nand/bf5xx_nand.c | 20 ++++++++++++++++++--
2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 246d451..bf0e9b0 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -93,7 +93,7 @@ config MTD_NAND_AU1550

config MTD_NAND_BF5XX
tristate "Blackfin on-chip NAND Flash Controller driver"
- depends on BF54x && MTD_NAND
+ depends on (BF54x || BF52x) && MTD_NAND
help
This enables the Blackfin on-chip NAND flash controller

diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c
index 1657ecd..542850c 100644
--- a/drivers/mtd/nand/bf5xx_nand.c
+++ b/drivers/mtd/nand/bf5xx_nand.c
@@ -74,7 +74,22 @@ static int hardware_ecc = 1;
static int hardware_ecc;
#endif

-static unsigned short bfin_nfc_pin_req[] = {P_NAND_CE, P_NAND_RB, 0};
+static unsigned short bfin_nfc_pin_req[] =
+ {P_NAND_CE,
+ P_NAND_RB,
+ P_NAND_D0,
+ P_NAND_D1,
+ P_NAND_D2,
+ P_NAND_D3,
+ P_NAND_D4,
+ P_NAND_D5,
+ P_NAND_D6,
+ P_NAND_D7,
+ P_NAND_WE,
+ P_NAND_RE,
+ P_NAND_CLE,
+ P_NAND_ALE,
+ 0};

/*
* Data structures for bf5xx nand flash controller driver
@@ -507,12 +522,13 @@ static int bf5xx_nand_dma_init(struct bf5xx_nand_info *info)

init_completion(&info->dma_completion);

+#ifdef CONFIG_BF54x
/* Setup DMAC1 channel mux for NFC which shared with SDH */
val = bfin_read_DMAC1_PERIMUX();
val &= 0xFFFE;
bfin_write_DMAC1_PERIMUX(val);
SSYNC();
-
+#endif
/* Request NFC DMA channel */
ret = request_dma(CH_NFC, "BF5XX NFC driver");
if (ret < 0) {
--
1.5.3.4
--
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