omap3: nand: prefetch in irq mode support

This patch enable prefetch-irq mode for nand transfer(read, write)

Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

2 files changed, 5 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/board-flash.c b/arch/arm/mach-omap2/board-flash.c
index f6b72533c08..19645095d59 100644
--- a/arch/arm/mach-omap2/board-flash.c
+++ b/arch/arm/mach-omap2/board-flash.c
@@ -16,6 +16,7 @@
 #include <linux/platform_device.h>
 #include <linux/mtd/physmap.h>
 #include <linux/io.h>
+#include <plat/irqs.h>
 
 #include <plat/gpmc.h>
 #include <plat/nand.h>
@@ -147,6 +148,7 @@ __init board_nand_init(struct mtd_partition *nand_parts,
         board_nand_data.nr_parts        = nr_parts;
         board_nand_data.devsize         = nand_type;
 
+        board_nand_data.gpmc_irq = OMAP_GPMC_IRQ_BASE + cs;
         gpmc_nand_init(&board_nand_data);
 }
 #else
diff --git a/arch/arm/plat-omap/include/plat/nand.h b/arch/arm/plat-omap/include/plat/nand.h
index 78c0bdb98c1..ae5e0538303 100644
--- a/arch/arm/plat-omap/include/plat/nand.h
+++ b/arch/arm/plat-omap/include/plat/nand.h
@@ -13,7 +13,8 @@
 enum nand_io {
         NAND_OMAP_PREFETCH_POLLED = 0,  /* prefetch polled mode, default */
         NAND_OMAP_POLLED,               /* polled mode, without prefetch */
-        NAND_OMAP_PREFETCH_DMA          /* prefetch enabled sDMA mode */
+        NAND_OMAP_PREFETCH_DMA,         /* prefetch enabled sDMA mode */
+        NAND_OMAP_PREFETCH_IRQ          /* prefetch enabled irq mode */
 };
 
 struct omap_nand_platform_data {
@@ -26,6 +27,7 @@ struct omap_nand_platform_data {
         int                     (*nand_setup)(void);
         int                     (*dev_ready)(struct omap_nand_platform_data *);
         int                     dma_channel;
+        int                     gpmc_irq;
         enum nand_io            xfer_type;
         unsigned long           phys_base;
         int                     devsize;