mtd: extend plat_nand for (read|write)_buf

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Gitweb:     http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=d6fed9e9fc5eefae5be0ecf222bac7e7496e8e74
Commit:     d6fed9e9fc5eefae5be0ecf222bac7e7496e8e74
Parent:     a0645ce9ba2e40fb2e2d74e47c90063015ee4527
Author:     Alexander Clouter <alex at digriz.org.uk>
AuthorDate: Mon May 11 19:28:01 2009 +0100
Committer:  David Woodhouse <David.Woodhouse at intel.com>
CommitDate: Fri Jun 5 17:50:52 2009 +0100

    mtd: extend plat_nand for (read|write)_buf
    
    This patch adds (write|read)_buf callbacks to plat_nand.
    
    The NAND on the TS-7800 provisioned by the FPGA allows readw() and
    readl() to be used which gives a 2.5x speed up.  To be able to use this
    from the plat_nand driver a hook for read_buf (and also write_buf whilst
    we are in there) need to be made available.  This patch adds the hook.
    
    Signed-off-by: Alexander Clouter <alex at digriz.org.uk>
    Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy at nokia.com>
    Signed-off-by: David Woodhouse <David.Woodhouse at intel.com>
---
 drivers/mtd/nand/plat_nand.c |    2 ++
 include/linux/mtd/nand.h     |    6 ++++++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c
index 28ffd4e..47a2105 100644
--- a/drivers/mtd/nand/plat_nand.c
+++ b/drivers/mtd/nand/plat_nand.c
@@ -61,6 +61,8 @@ static int __devinit plat_nand_probe(struct platform_device *pdev)
 	data->chip.cmd_ctrl = pdata->ctrl.cmd_ctrl;
 	data->chip.dev_ready = pdata->ctrl.dev_ready;
 	data->chip.select_chip = pdata->ctrl.select_chip;
+	data->chip.write_buf = pdata->ctrl.write_buf;
+	data->chip.read_buf = pdata->ctrl.read_buf;
 	data->chip.chip_delay = pdata->chip.chip_delay;
 	data->chip.options |= pdata->chip.options;
 
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 7efb9be..0e35375 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -584,6 +584,8 @@ struct platform_nand_chip {
  * @select_chip:	platform specific chip select function
  * @cmd_ctrl:		platform specific function for controlling
  *			ALE/CLE/nCE. Also used to write command and address
+ * @write_buf:		platform specific function for write buffer
+ * @read_buf:		platform specific function for read buffer
  * @priv:		private data to transport driver specific settings
  *
  * All fields are optional and depend on the hardware driver requirements
@@ -594,6 +596,10 @@ struct platform_nand_ctrl {
 	void		(*select_chip)(struct mtd_info *mtd, int chip);
 	void		(*cmd_ctrl)(struct mtd_info *mtd, int dat,
 				    unsigned int ctrl);
+	void		(*write_buf)(struct mtd_info *mtd,
+				    const uint8_t *buf, int len);
+	void		(*read_buf)(struct mtd_info *mtd,
+				    uint8_t *buf, int len);
 	void		*priv;
 };