[PATCH v3 1/4] omap3: nand: prefetch in irq mode support
From: tony@atomide.com (Tony Lindgren)
Date: 2010-08-02 13:03:07
Also in:
linux-omap
* Sukumar Ghorai [off-list ref] [100713 07:39]:
This patch enable prefetch-irq mode for NAND.
<snip>
quoted hunk ↗ jump to hunk
--- a/arch/arm/mach-omap2/board-flash.c +++ b/arch/arm/mach-omap2/board-flash.c@@ -133,6 +133,7 @@ static struct omap_nand_platform_data board_nand_data = { .nand_setup = NULL, .gpmc_t = &nand_timings, .dma_channel = -1, /* disable DMA in OMAP NAND driver */ + .gpmc_irq = GPMC_IRQ_NUMBER, .dev_ready = NULL, .devsize = 0, /* '0' for 8-bit, '1' for 16-bit device */ }; --- a/arch/arm/mach-omap2/include/mach/board-flash.h +++ b/arch/arm/mach-omap2/include/mach/board-flash.h@@ -19,6 +19,9 @@ #define PDC_ONENAND 3 #define DBG_MPDB 4 +/* Interrupt number to the MPU Subsystem for GPMC */ +#define GPMC_IRQ_NUMBER 20 +
This does not look right for the IRQ. Please add it to the irqs.h and 34xx, then set it dynamically during the init just like we handle the other interrupt numbers. This is because the irq numbers can change between omaps, like irqs-44xx.h already has #define OMAP44XX_IRQ_GPMC (20 + OMAP44XX_IRQ_GIC_START)
quoted hunk ↗ jump to hunk
@@ -130,6 +141,13 @@ struct omap_nand_info { unsigned long phys_base; struct completion comp; int dma_ch; + int gpmc_irq; + enum { + NAND_IO_READ = 0, /* read */ + NAND_IO_WRITE, /* write */ + } iomode; + u_char *buf; + int buf_len; };
These should probably be OMAP_NAND_IO_READ and OMAP_NAND_IO_WRITE? Regards, Tony